Tokyo/Model

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(Balanced Redifferentiation of E. coli !)
 
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==[[Tokyo_Tech|Abstruct]]  [[Tokyo/Model|Concept & Model]]  [[Tokyo/Requirements |Requirements]]  [[Tokyo/Genetic circuit|Genetic_circuit]]  [[Tokyo/Works|Works]]  [[Tokyo/about our team|About_our_team]]==
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__NOTOC__
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==[[Tokyo_Tech|Abstract]]   [[Tokyo/Model|Concept & Model]]   [[Tokyo/Requirements |Requirements]]   [[Tokyo/Genetic circuit|Genetic_circuit]]   [[Tokyo/Works|Works]]   [[Tokyo/About our team|About_our_team]]==
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''' To follow Pareto’s principle like [[Tokyo/Concepts|Ant society]], our model system must follow the three cases in Fig 1 to 3. In our model, all nodes (individual cells) have the same genetic circuits but take two states, A (worker) and B (idler), depending on the surrounding circumstances.'''
 
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<br>
 
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'''Condition 1. Bistable state'''
 
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[[Image:model1.jpg]]
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==Balanced Redifferentiation of E. coli ! ==
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<br>Fig. 1 The system is stable containing nodes A and B at certain ratio.
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''' To follow [[Tokyo/Concepts|Pareto’s principle found in an ant society]], our model system must satisfy the three conditions shown in Fig. 1 to 4. In our model, all individual cells have the same genetic circuits but take either of stable state A (worker) or B (idler) depending on the surrounding circumstances as if they DIFFERENTIATE. They also change their states as if they DEDIFFERENTIATE and REDIFFERENTIATE so that the ratio of the two cell states is well balanced.
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<!--''' ([http://en.wikipedia.org/wiki/Pareto_principle What is Pareto's principle? (Wikipedia)])-->
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'''Condition 2. Unstable state with node A removed'''
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<br>'''As shown in Fig. 1, 2, 3, and 4, the conditions of the system changes as follows:'''<br><br>
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'''Bistable state ⇒ The removal of A (worker) ⇒ Dedifferentiation of B(idlers)⇒ Balanced Redifferentiation into A and of B'''
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<br><br>
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[[Image:1state.JPG|thumb|210px|'''Fig. 1 Bistable state at balanced ratio of differentiated A and B''' <br>The system is stable when it contains both A (worker) and B (idler) "balanced" at certain ratio.|left]]
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[[Image:model2.jpg]]
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[[Image:2state.JPG|thumb|190px|'''Fig. 2 Removal of A''' <br>Now that A (worker) is removed, there is only B (idler) left.|center|left]]
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<br>Fig. 2 By removal of node A, the system containing only node B becomes unstable. <!--Node B detects the removal of node A from the system and knows that there is only node B left.-->
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[[Image:3state.JPG|thumb|190px|'''Fig. 3 Dedifferentiation of B''' <br>While after the removal of A (worker), B (idler) becomes unstable and ''dedifferentiates''.|center|left]]
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<!--Node B detects the removal of node A from the system and knows that there is only node B left.-->  
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'''Condition 3. From unstable to stable state'''
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[[Image:4state.JPG|thumb|210px|'''Fig. 4 Balanced Redifferentiation''' <br>Some Dedifferentiated cells ''redifferentiate'' into A (worker) while the others go back to B (idler). Then the system becomes stable again with the balanced ratio of A and B.|center|left]]
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[[Image:model3.jpg]]
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<br>Fig. 3 In the unstable state, some node B become A while the others remain B. The system then becomes stable again.
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[[Image:concepts.jpg]]
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<!--[[Image:concepts.jpg]]-->

Latest revision as of 03:46, 27 October 2007

Abstract   Concept & Model   Requirements   Genetic_circuit   Works   About_our_team

Balanced Redifferentiation of E. coli !

To follow Pareto’s principle found in an ant society, our model system must satisfy the three conditions shown in Fig. 1 to 4. In our model, all individual cells have the same genetic circuits but take either of stable state A (worker) or B (idler) depending on the surrounding circumstances as if they DIFFERENTIATE. They also change their states as if they DEDIFFERENTIATE and REDIFFERENTIATE so that the ratio of the two cell states is well balanced.



As shown in Fig. 1, 2, 3, and 4, the conditions of the system changes as follows:

Bistable state ⇒ The removal of A (worker) ⇒ Dedifferentiation of B(idlers)⇒ Balanced Redifferentiation into A and of B

Fig. 1 Bistable state at balanced ratio of differentiated A and B
The system is stable when it contains both A (worker) and B (idler) "balanced" at certain ratio.
Fig. 2 Removal of A
Now that A (worker) is removed, there is only B (idler) left.
Fig. 3 Dedifferentiation of B
While after the removal of A (worker), B (idler) becomes unstable and dedifferentiates.
Fig. 4 Balanced Redifferentiation
Some Dedifferentiated cells redifferentiate into A (worker) while the others go back to B (idler). Then the system becomes stable again with the balanced ratio of A and B.