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This CellML file was generated on 9/02/2010 at 11:26:55 at a.m. using:

COR (0.9.31.1333)
Copyright 2002-2010 Dr Alan Garny
http://cor.physiol.ox.ac.uk/ - cor@physiol.ox.ac.uk

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http://www.cellml.org/
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				<title>Evolutionary dynamics of mutator phenotypes in cancer: implications for chemotherapy</title>
				<author>  
					<firstname>Catherine</firstname>
					<surname>Lloyd</surname>
					<affiliation>
						<shortaffil>Auckland Bioengineering Institute, The University of Auckland</shortaffil>
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				<para>ABSTRACT: Genetic instability is a central characteristic of cancers. However, the selective forces responsible for the emergence of genetic instability are not clear. We use mathematical models to determine the conditions under which selection favors instability, and when stable cells are advantageous. We take into account the processes of DNA damage, repair, cell cycle arrest, mutation, and death. We find that the rate of DNA damage can play a major role in this context. In particular, an increase in the rate of DNA damage can reverse the relative fitness of stable and unstable cells. In terms of cancer progression, we find the following results. If cells have intact apoptotic responses, stable cells prevail if the DNA hit rate is low. A high DNA hit rate can result in the selection of genetically unstable cells. This has implications for the induction of tumors by carcinogens. On the other hand, if cells are characterized by impaired apoptosis, we observe the opposite. Genetic instability is selected for if the DNA hit rate is low. A high DNA hit rate can select against instability and result in the persistence of stable cells. We propose that chemotherapy can be used to reverse the relative fitness of stable and unstable cells, such that unstable cells are the inferior competitors. This could result in the competitive exclusion of progressing cancer cells.
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				<para>
The original paper reference is cited below:
</para>
				<para>
Evolutionary dynamics of mutator phenotypes in cancer: implications for chemotherapy, Natalia L. Komarova and Dominik Wodarz, 2003,<emphasis>Cancer Research</emphasis>, 63, 6635-6642. <ulink url="http://www.ncbi.nlm.nih.gov/pubmed/14583456">PubMed ID: 14583456</ulink>
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					<caption>Schematic diagram of the model, showing the processes of cell reproduction, DNA damage, repair, cell cycle arrest, mutation and death.</caption>
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            Evolutionary Dynamics of Mutator Phenotypes in Cancer: Implications for Chemotherapy
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                  <ci>phi</ci>
                  <ci>M_5</ci>
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            </apply>
         </apply>
      </math>
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      <variable name="M_5" units="dimensionless" public_interface="in"/>
      <variable name="M_6" units="dimensionless" initial_value="0" public_interface="out"/>
      <variable name="R_5" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_6" units="first_order_rate_constant" public_interface="in"/>
      <variable name="epsilon_m" units="first_order_rate_constant" public_interface="in"/>
      <variable name="alpha" units="dimensionless" public_interface="in"/>
      <variable name="u_m" units="first_order_rate_constant" public_interface="in"/>
      <variable name="u" units="first_order_rate_constant" public_interface="in"/>
      <variable name="phi" units="first_order_rate_constant" public_interface="in"/>
      <variable name="time" units="hour" public_interface="in"/>
      <math xmlns="http://www.w3.org/1998/Math/MathML">
         <apply>
            <eq/>
            <apply>
               <diff/>
               <bvar>
                  <ci>time</ci>
               </bvar>
               <ci>M_6</ci>
            </apply>
            <apply>
               <minus/>
               <apply>
                  <plus/>
                  <apply>
                     <times/>
                     <apply>
                        <divide/>
                        <apply>
                           <times/>
                           <ci>alpha</ci>
                           <ci>u</ci>
                           <ci>R_5</ci>
                           <ci>M_5</ci>
                        </apply>
                        <cn cellml:units="per_time2">1</cn>
                     </apply>
                     <apply>
                        <minus/>
                        <cn cellml:units="first_order_rate_constant">1</cn>
                        <ci>epsilon_m</ci>
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                  </apply>
                  <apply>
                     <times/>
                     <apply>
                        <divide/>
                        <apply>
                           <times/>
                           <ci>R_6</ci>
                           <ci>M_6</ci>
                        </apply>
                        <cn cellml:units="first_order_rate_constant">1</cn>
                     </apply>
                     <apply>
                        <minus/>
                        <cn cellml:units="first_order_rate_constant">1</cn>
                        <ci>u_m</ci>
                     </apply>
                  </apply>
               </apply>
               <apply>
                  <times/>
                  <ci>phi</ci>
                  <ci>M_6</ci>
               </apply>
            </apply>
         </apply>
      </math>
   </component>
   <component xmlns="http://www.cellml.org/cellml/1.0#" name="M_7">
      <variable name="M_6" units="dimensionless" public_interface="in"/>
      <variable name="M_7" units="dimensionless" initial_value="0" public_interface="out"/>
      <variable name="R_6" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_7" units="first_order_rate_constant" public_interface="in"/>
      <variable name="epsilon_m" units="first_order_rate_constant" public_interface="in"/>
      <variable name="alpha" units="dimensionless" public_interface="in"/>
      <variable name="u_m" units="first_order_rate_constant" public_interface="in"/>
      <variable name="u" units="first_order_rate_constant" public_interface="in"/>
      <variable name="phi" units="first_order_rate_constant" public_interface="in"/>
      <variable name="time" units="hour" public_interface="in"/>
      <math xmlns="http://www.w3.org/1998/Math/MathML">
         <apply>
            <eq/>
            <apply>
               <diff/>
               <bvar>
                  <ci>time</ci>
               </bvar>
               <ci>M_7</ci>
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            <apply>
               <minus/>
               <apply>
                  <plus/>
                  <apply>
                     <times/>
                     <apply>
                        <divide/>
                        <apply>
                           <times/>
                           <ci>alpha</ci>
                           <ci>u</ci>
                           <ci>R_6</ci>
                           <ci>M_6</ci>
                        </apply>
                        <cn cellml:units="per_time2">1</cn>
                     </apply>
                     <apply>
                        <minus/>
                        <cn cellml:units="first_order_rate_constant">1</cn>
                        <ci>epsilon_m</ci>
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                  </apply>
                  <apply>
                     <times/>
                     <apply>
                        <divide/>
                        <apply>
                           <times/>
                           <ci>R_7</ci>
                           <ci>M_7</ci>
                        </apply>
                        <cn cellml:units="first_order_rate_constant">1</cn>
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                     <apply>
                        <minus/>
                        <cn cellml:units="first_order_rate_constant">1</cn>
                        <ci>u_m</ci>
                     </apply>
                  </apply>
               </apply>
               <apply>
                  <times/>
                  <ci>phi</ci>
                  <ci>M_7</ci>
               </apply>
            </apply>
         </apply>
      </math>
   </component>
   <component xmlns="http://www.cellml.org/cellml/1.0#" name="M_8">
      <variable name="M_7" units="dimensionless" public_interface="in"/>
      <variable name="M_8" units="dimensionless" initial_value="0" public_interface="out"/>
      <variable name="R_7" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_8" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_8" units="dimensionless" public_interface="in"/>
      <variable name="epsilon_m" units="first_order_rate_constant" public_interface="in"/>
      <variable name="alpha" units="dimensionless" public_interface="in"/>
      <variable name="u_m" units="first_order_rate_constant" public_interface="in"/>
      <variable name="u" units="first_order_rate_constant" public_interface="in"/>
      <variable name="phi" units="first_order_rate_constant" public_interface="in"/>
      <variable name="time" units="hour" public_interface="in"/>
      <math xmlns="http://www.w3.org/1998/Math/MathML">
         <apply>
            <eq/>
            <apply>
               <diff/>
               <bvar>
                  <ci>time</ci>
               </bvar>
               <ci>M_8</ci>
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            <apply>
               <minus/>
               <apply>
                  <plus/>
                  <apply>
                     <times/>
                     <apply>
                        <divide/>
                        <apply>
                           <times/>
                           <ci>alpha</ci>
                           <ci>u</ci>
                           <ci>R_7</ci>
                           <ci>M_7</ci>
                        </apply>
                        <cn cellml:units="per_time2">1</cn>
                     </apply>
                     <apply>
                        <minus/>
                        <cn cellml:units="first_order_rate_constant">1</cn>
                        <ci>epsilon_m</ci>
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                  </apply>
                  <apply>
                     <times/>
                     <apply>
                        <divide/>
                        <apply>
                           <times/>
                           <ci>R_8</ci>
                           <ci>M_8</ci>
                        </apply>
                        <cn cellml:units="first_order_rate_constant">1</cn>
                     </apply>
                     <apply>
                        <plus/>
                        <apply>
                           <minus/>
                           <cn cellml:units="first_order_rate_constant">1</cn>
                           <ci>u_m</ci>
                        </apply>
                        <apply>
                           <times/>
                           <apply>
                              <divide/>
                              <apply>
                                 <times/>
                                 <ci>alpha</ci>
                                 <ci>u</ci>
                              </apply>
                              <cn cellml:units="first_order_rate_constant">1</cn>
                           </apply>
                           <apply>
                              <minus/>
                              <cn cellml:units="first_order_rate_constant">1</cn>
                              <ci>epsilon_m</ci>
                           </apply>
                        </apply>
                     </apply>
                  </apply>
               </apply>
               <apply>
                  <times/>
                  <ci>phi</ci>
                  <ci>S_8</ci>
               </apply>
            </apply>
         </apply>
      </math>
   </component>
   <component xmlns="http://www.cellml.org/cellml/1.0#" name="R">
      <variable name="R_0" units="first_order_rate_constant" public_interface="out"/>
      <variable name="R_1" units="first_order_rate_constant" public_interface="out"/>
      <variable name="R_2" units="first_order_rate_constant" public_interface="out"/>
      <variable name="R_3" units="first_order_rate_constant" public_interface="out"/>
      <variable name="R_4" units="first_order_rate_constant" public_interface="out"/>
      <variable name="R_5" units="first_order_rate_constant" public_interface="out"/>
      <variable name="R_6" units="first_order_rate_constant" public_interface="out"/>
      <variable name="R_7" units="first_order_rate_constant" public_interface="out"/>
      <variable name="R_8" units="first_order_rate_constant" public_interface="out"/>
      <variable name="r_0" units="first_order_rate_constant" initial_value="0.5"/>
      <variable name="r_1" units="first_order_rate_constant" initial_value="0.6"/>
      <variable name="r_2" units="first_order_rate_constant" initial_value="0.7"/>
      <variable name="r_3" units="first_order_rate_constant" initial_value="0.8"/>
      <variable name="r_4" units="first_order_rate_constant" initial_value="0.9"/>
      <variable name="r_5" units="first_order_rate_constant" initial_value="1"/>
      <variable name="r_6" units="first_order_rate_constant" initial_value="1.1"/>
      <variable name="r_7" units="first_order_rate_constant" initial_value="1.2"/>
      <variable name="r_8" units="first_order_rate_constant" initial_value="1.3"/>
      <variable name="alpha" units="dimensionless" public_interface="in"/>
      <variable name="a" units="dimensionless" public_interface="in"/>
      <math xmlns="http://www.w3.org/1998/Math/MathML">
         <apply>
            <eq/>
            <ci>R_0</ci>
            <ci>r_0</ci>
         </apply>
         <apply>
            <eq/>
            <ci>R_1</ci>
            <apply>
               <times/>
               <ci>r_1</ci>
               <apply>
                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
                  <ci>a</ci>
               </apply>
            </apply>
         </apply>
         <apply>
            <eq/>
            <ci>R_2</ci>
            <apply>
               <times/>
               <ci>r_2</ci>
               <apply>
                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
                  <ci>a</ci>
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         </apply>
         <apply>
            <eq/>
            <ci>R_3</ci>
            <apply>
               <times/>
               <ci>r_3</ci>
               <apply>
                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
                  <ci>a</ci>
               </apply>
            </apply>
         </apply>
         <apply>
            <eq/>
            <ci>R_4</ci>
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               <times/>
               <ci>r_4</ci>
               <apply>
                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
                  <ci>a</ci>
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            </apply>
         </apply>
         <apply>
            <eq/>
            <ci>R_5</ci>
            <apply>
               <times/>
               <ci>r_5</ci>
               <apply>
                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
                  <ci>a</ci>
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         </apply>
         <apply>
            <eq/>
            <ci>R_6</ci>
            <apply>
               <times/>
               <ci>r_6</ci>
               <apply>
                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
                  <ci>a</ci>
               </apply>
            </apply>
         </apply>
         <apply>
            <eq/>
            <ci>R_7</ci>
            <apply>
               <times/>
               <ci>r_7</ci>
               <apply>
                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
                  <ci>a</ci>
               </apply>
            </apply>
         </apply>
         <apply>
            <eq/>
            <ci>R_8</ci>
            <apply>
               <times/>
               <ci>r_8</ci>
               <apply>
                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
                  <ci>a</ci>
               </apply>
            </apply>
         </apply>
      </math>
   </component>
   <component xmlns="http://www.cellml.org/cellml/1.0#" name="phi">
      <variable name="phi" units="first_order_rate_constant" public_interface="out"/>
      <variable name="u_s" units="first_order_rate_constant" public_interface="in"/>
      <variable name="u_m" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_0" units="dimensionless" public_interface="in"/>
      <variable name="S_1" units="dimensionless" public_interface="in"/>
      <variable name="S_2" units="dimensionless" public_interface="in"/>
      <variable name="S_3" units="dimensionless" public_interface="in"/>
      <variable name="S_4" units="dimensionless" public_interface="in"/>
      <variable name="S_5" units="dimensionless" public_interface="in"/>
      <variable name="S_6" units="dimensionless" public_interface="in"/>
      <variable name="S_7" units="dimensionless" public_interface="in"/>
      <variable name="S_8" units="dimensionless" public_interface="in"/>
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      <variable name="M_2" units="dimensionless" public_interface="in"/>
      <variable name="M_3" units="dimensionless" public_interface="in"/>
      <variable name="M_4" units="dimensionless" public_interface="in"/>
      <variable name="M_5" units="dimensionless" public_interface="in"/>
      <variable name="M_6" units="dimensionless" public_interface="in"/>
      <variable name="M_7" units="dimensionless" public_interface="in"/>
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      <variable name="R_0" units="first_order_rate_constant" public_interface="in"/>
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      <variable name="R_2" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_3" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_4" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_5" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_6" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_7" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_8" units="first_order_rate_constant" public_interface="in"/>
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            <eq/>
            <ci>phi</ci>
            <apply>
               <plus/>
               <apply>
                  <times/>
                  <apply>
                     <divide/>
                     <apply>
                        <minus/>
                        <cn cellml:units="first_order_rate_constant">1</cn>
                        <ci>u_s</ci>
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                     <cn cellml:units="first_order_rate_constant">1</cn>
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                  <apply>
                     <plus/>
                     <apply>
                        <times/>
                        <ci>R_0</ci>
                        <ci>S_0</ci>
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                     <apply>
                        <times/>
                        <ci>R_1</ci>
                        <ci>S_1</ci>
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                     <apply>
                        <times/>
                        <ci>R_2</ci>
                        <ci>S_2</ci>
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                     <apply>
                        <times/>
                        <ci>R_3</ci>
                        <ci>S_3</ci>
                     </apply>
                     <apply>
                        <times/>
                        <ci>R_4</ci>
                        <ci>S_4</ci>
                     </apply>
                  </apply>
               </apply>
               <apply>
                  <times/>
                  <apply>
                     <divide/>
                     <apply>
                        <minus/>
                        <cn cellml:units="first_order_rate_constant">1</cn>
                        <ci>u_m</ci>
                     </apply>
                     <cn cellml:units="first_order_rate_constant">1</cn>
                  </apply>
                  <apply>
                     <plus/>
                     <apply>
                        <times/>
                        <ci>R_1</ci>
                        <ci>M_1</ci>
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                     <apply>
                        <times/>
                        <ci>R_2</ci>
                        <ci>M_2</ci>
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                     <apply>
                        <times/>
                        <ci>R_3</ci>
                        <ci>M_3</ci>
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                     <apply>
                        <times/>
                        <ci>R_4</ci>
                        <ci>M_4</ci>
                     </apply>
                  </apply>
               </apply>
            </apply>
         </apply>
      </math>
   </component>
   <component xmlns="http://www.cellml.org/cellml/1.0#" name="w">
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      <variable name="w" units="dimensionless" initial_value="0"/>
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      <variable name="epsilon_s" units="first_order_rate_constant" public_interface="in"/>
      <variable name="R_0" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_0" units="dimensionless" public_interface="in"/>
      <variable name="R_1" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_1" units="dimensionless" public_interface="in"/>
      <variable name="R_2" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_2" units="dimensionless" public_interface="in"/>
      <variable name="R_3" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_3" units="dimensionless" public_interface="in"/>
      <variable name="R_4" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_4" units="dimensionless" public_interface="in"/>
      <variable name="R_5" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_5" units="dimensionless" public_interface="in"/>
      <variable name="R_6" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_6" units="dimensionless" public_interface="in"/>
      <variable name="R_7" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_7" units="dimensionless" public_interface="in"/>
      <variable name="R_8" units="first_order_rate_constant" public_interface="in"/>
      <variable name="S_8" units="dimensionless" public_interface="in"/>
      <variable name="epsilon_m" units="first_order_rate_constant" public_interface="in"/>
      <variable name="M_0" units="dimensionless" public_interface="in"/>
      <variable name="M_1" units="dimensionless" public_interface="in"/>
      <variable name="M_2" units="dimensionless" public_interface="in"/>
      <variable name="M_3" units="dimensionless" public_interface="in"/>
      <variable name="M_4" units="dimensionless" public_interface="in"/>
      <variable name="M_5" units="dimensionless" public_interface="in"/>
      <variable name="M_6" units="dimensionless" public_interface="in"/>
      <variable name="M_7" units="dimensionless" public_interface="in"/>
      <variable name="M_8" units="dimensionless" public_interface="in"/>
      <variable name="phi" units="first_order_rate_constant" public_interface="in"/>
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         <apply>
            <eq/>
            <apply>
               <diff/>
               <bvar>
                  <ci>time</ci>
               </bvar>
               <ci>w</ci>
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            <apply>
               <minus/>
               <apply>
                  <times/>
                  <apply>
                     <divide/>
                     <apply>
                        <times/>
                        <apply>
                           <minus/>
                           <cn cellml:units="dimensionless">1</cn>
                           <ci>alpha</ci>
                        </apply>
                        <ci>u</ci>
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                     <cn cellml:units="per_time2">1</cn>
                  </apply>
                  <apply>
                     <plus/>
                     <apply>
                        <times/>
                        <apply>
                           <minus/>
                           <cn cellml:units="first_order_rate_constant">1</cn>
                           <ci>epsilon_s</ci>
                        </apply>
                        <apply>
                           <plus/>
                           <apply>
                              <times/>
                              <ci>R_0</ci>
                              <ci>S_0</ci>
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                           <apply>
                              <times/>
                              <ci>R_1</ci>
                              <ci>S_1</ci>
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                           <apply>
                              <times/>
                              <ci>R_2</ci>
                              <ci>S_2</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_3</ci>
                              <ci>S_3</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_4</ci>
                              <ci>S_4</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_5</ci>
                              <ci>S_5</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_6</ci>
                              <ci>S_6</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_7</ci>
                              <ci>S_7</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_8</ci>
                              <ci>S_8</ci>
                           </apply>
                        </apply>
                     </apply>
                     <apply>
                        <times/>
                        <apply>
                           <minus/>
                           <cn cellml:units="first_order_rate_constant">1</cn>
                           <ci>epsilon_m</ci>
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                        <apply>
                           <plus/>
                           <apply>
                              <times/>
                              <ci>R_0</ci>
                              <ci>M_0</ci>
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                           <apply>
                              <times/>
                              <ci>R_1</ci>
                              <ci>M_1</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_2</ci>
                              <ci>M_2</ci>
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                           <apply>
                              <times/>
                              <ci>R_3</ci>
                              <ci>M_3</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_4</ci>
                              <ci>M_4</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_5</ci>
                              <ci>M_5</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_6</ci>
                              <ci>M_6</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_7</ci>
                              <ci>M_7</ci>
                           </apply>
                           <apply>
                              <times/>
                              <ci>R_8</ci>
                              <ci>M_8</ci>
                           </apply>
                        </apply>
                     </apply>
                  </apply>
               </apply>
               <apply>
                  <times/>
                  <ci>phi</ci>
                  <ci>w</ci>
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            </apply>
         </apply>
      </math>
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   <component xmlns="http://www.cellml.org/cellml/1.0#" name="total_cells">
      <variable name="total_cells" units="dimensionless"/>
      <variable name="stable_total" units="dimensionless"/>
      <variable name="mutant_total" units="dimensionless"/>
      <variable name="S_0" units="dimensionless" public_interface="in"/>
      <variable name="S_1" units="dimensionless" public_interface="in"/>
      <variable name="S_2" units="dimensionless" public_interface="in"/>
      <variable name="S_3" units="dimensionless" public_interface="in"/>
      <variable name="S_4" units="dimensionless" public_interface="in"/>
      <variable name="S_5" units="dimensionless" public_interface="in"/>
      <variable name="S_6" units="dimensionless" public_interface="in"/>
      <variable name="S_7" units="dimensionless" public_interface="in"/>
      <variable name="S_8" units="dimensionless" public_interface="in"/>
      <variable name="M_0" units="dimensionless" public_interface="in"/>
      <variable name="M_1" units="dimensionless" public_interface="in"/>
      <variable name="M_2" units="dimensionless" public_interface="in"/>
      <variable name="M_3" units="dimensionless" public_interface="in"/>
      <variable name="M_4" units="dimensionless" public_interface="in"/>
      <variable name="M_5" units="dimensionless" public_interface="in"/>
      <variable name="M_6" units="dimensionless" public_interface="in"/>
      <variable name="M_7" units="dimensionless" public_interface="in"/>
      <variable name="M_8" units="dimensionless" public_interface="in"/>
      <math xmlns="http://www.w3.org/1998/Math/MathML">
         <apply>
            <eq/>
            <ci>total_cells</ci>
            <apply>
               <plus/>
               <ci>S_0</ci>
               <ci>S_1</ci>
               <ci>S_2</ci>
               <ci>S_3</ci>
               <ci>S_4</ci>
               <ci>S_5</ci>
               <ci>S_6</ci>
               <ci>S_7</ci>
               <ci>S_8</ci>
               <ci>M_0</ci>
               <ci>M_2</ci>
               <ci>M_3</ci>
               <ci>M_4</ci>
               <ci>M_5</ci>
               <ci>M_6</ci>
               <ci>M_7</ci>
               <ci>M_8</ci>
            </apply>
         </apply>
         <apply>
            <eq/>
            <ci>stable_total</ci>
            <apply>
               <plus/>
               <ci>S_0</ci>
               <ci>S_1</ci>
               <ci>S_2</ci>
               <ci>S_3</ci>
               <ci>S_4</ci>
               <ci>S_5</ci>
               <ci>S_6</ci>
               <ci>S_7</ci>
               <ci>S_8</ci>
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         </apply>
         <apply>
            <eq/>
            <ci>mutant_total</ci>
            <apply>
               <plus/>
               <ci>M_0</ci>
               <ci>M_2</ci>
               <ci>M_3</ci>
               <ci>M_4</ci>
               <ci>M_5</ci>
               <ci>M_6</ci>
               <ci>M_7</ci>
               <ci>M_8</ci>
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      <variable name="beta" units="dimensionless" initial_value="0.2" public_interface="out"/>
      <variable name="a" units="dimensionless" initial_value="0.5" public_interface="out"/>
      <variable name="u" units="first_order_rate_constant" initial_value="0.07" public_interface="out"/>
      <variable name="u_s" units="first_order_rate_constant" public_interface="out"/>
      <variable name="u_m" units="first_order_rate_constant" public_interface="out"/>
      <variable name="epsilon_m" units="first_order_rate_constant" initial_value="0.1" public_interface="out"/>
      <variable name="epsilon_s" units="first_order_rate_constant" initial_value="0.99" public_interface="out"/>
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            <ci>u_s</ci>
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               <times/>
               <ci>u</ci>
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                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
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                     <divide/>
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                        <times/>
                        <ci>beta</ci>
                        <ci>epsilon_s</ci>
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                     <cn cellml:units="first_order_rate_constant">1</cn>
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            <ci>u_m</ci>
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               <ci>u</ci>
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                  <minus/>
                  <cn cellml:units="dimensionless">1</cn>
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                     <divide/>
                     <apply>
                        <times/>
                        <ci>beta</ci>
                        <ci>epsilon_m</ci>
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                     <cn cellml:units="first_order_rate_constant">1</cn>
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      <map_components component_1="S_7" component_2="environment"/>
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   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_6" component_2="w"/>
      <map_variables variable_1="S_6" variable_2="S_6"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_7" component_2="w"/>
      <map_variables variable_1="S_7" variable_2="S_7"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_8" component_2="w"/>
      <map_variables variable_1="S_8" variable_2="S_8"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_0" component_2="w"/>
      <map_variables variable_1="M_0" variable_2="M_0"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_1" component_2="w"/>
      <map_variables variable_1="M_1" variable_2="M_1"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_2" component_2="w"/>
      <map_variables variable_1="M_2" variable_2="M_2"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_3" component_2="w"/>
      <map_variables variable_1="M_3" variable_2="M_3"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_4" component_2="w"/>
      <map_variables variable_1="M_4" variable_2="M_4"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_5" component_2="w"/>
      <map_variables variable_1="M_5" variable_2="M_5"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_6" component_2="w"/>
      <map_variables variable_1="M_6" variable_2="M_6"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_7" component_2="w"/>
      <map_variables variable_1="M_7" variable_2="M_7"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_8" component_2="w"/>
      <map_variables variable_1="M_8" variable_2="M_8"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="phi" component_2="w"/>
      <map_variables variable_1="phi" variable_2="phi"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_8" component_2="M_8"/>
      <map_variables variable_1="S_8" variable_2="S_8"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_0" component_2="total_cells"/>
      <map_variables variable_1="S_0" variable_2="S_0"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_1" component_2="total_cells"/>
      <map_variables variable_1="S_1" variable_2="S_1"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_2" component_2="total_cells"/>
      <map_variables variable_1="S_2" variable_2="S_2"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_3" component_2="total_cells"/>
      <map_variables variable_1="S_3" variable_2="S_3"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_4" component_2="total_cells"/>
      <map_variables variable_1="S_4" variable_2="S_4"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_5" component_2="total_cells"/>
      <map_variables variable_1="S_5" variable_2="S_5"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_6" component_2="total_cells"/>
      <map_variables variable_1="S_6" variable_2="S_6"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_7" component_2="total_cells"/>
      <map_variables variable_1="S_7" variable_2="S_7"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_8" component_2="total_cells"/>
      <map_variables variable_1="S_8" variable_2="S_8"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_0" component_2="total_cells"/>
      <map_variables variable_1="M_0" variable_2="M_0"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_1" component_2="total_cells"/>
      <map_variables variable_1="M_1" variable_2="M_1"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_2" component_2="total_cells"/>
      <map_variables variable_1="M_2" variable_2="M_2"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_3" component_2="total_cells"/>
      <map_variables variable_1="M_3" variable_2="M_3"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_4" component_2="total_cells"/>
      <map_variables variable_1="M_4" variable_2="M_4"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_5" component_2="total_cells"/>
      <map_variables variable_1="M_5" variable_2="M_5"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_6" component_2="total_cells"/>
      <map_variables variable_1="M_6" variable_2="M_6"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_7" component_2="total_cells"/>
      <map_variables variable_1="M_7" variable_2="M_7"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_8" component_2="total_cells"/>
      <map_variables variable_1="M_8" variable_2="M_8"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_0" component_2="kinetic_parameters"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_1" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
      <map_variables variable_1="epsilon_s" variable_2="epsilon_s"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_2" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
      <map_variables variable_1="epsilon_s" variable_2="epsilon_s"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_3" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
      <map_variables variable_1="epsilon_s" variable_2="epsilon_s"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_4" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
      <map_variables variable_1="epsilon_s" variable_2="epsilon_s"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_5" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
      <map_variables variable_1="epsilon_s" variable_2="epsilon_s"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_6" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
      <map_variables variable_1="epsilon_s" variable_2="epsilon_s"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_7" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
      <map_variables variable_1="epsilon_s" variable_2="epsilon_s"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="S_8" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
      <map_variables variable_1="epsilon_s" variable_2="epsilon_s"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_0" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_1" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_2" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_3" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_4" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_5" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_6" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_7" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="M_8" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="R" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="a" variable_2="a"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="phi" component_2="kinetic_parameters"/>
      <map_variables variable_1="u_s" variable_2="u_s"/>
      <map_variables variable_1="u_m" variable_2="u_m"/>
   </connection>
   <connection xmlns="http://www.cellml.org/cellml/1.0#">
      <map_components component_1="w" component_2="kinetic_parameters"/>
      <map_variables variable_1="alpha" variable_2="alpha"/>
      <map_variables variable_1="u" variable_2="u"/>
      <map_variables variable_1="epsilon_s" variable_2="epsilon_s"/>
      <map_variables variable_1="epsilon_m" variable_2="epsilon_m"/>
   </connection>
</model>