Team:PKU Beijing/Team/Previous Years

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[[Team:PKU_Beijing/Team|Team]] > [[Team:PKU_Beijing/Team/Previous_Years|Previous Years]]
==='''Peking Univ. 2008 Team'''===
==='''Peking Univ. 2008 Team'''===
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==='''Peking Univ. 2007 Team'''===
==='''Peking Univ. 2007 Team'''===
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Our projects concern with the ability for bacterial cells to differentiate out of homogeneous conditions into populations with the division of labor. We aim at devices conferring host cells with the ability to form cooperating groups spontaneously and to take consecutive steps sequentially even when the genetic background and environmental inputs are identical. To break the mirror in such homogeneous condition, we need two devices respectively responsible for temporal and spatial differentiation. The implementation and application of such devices will lead to bioengineering where complex programs consisted of sequential steps (structure oriented programs) and cooperating agencies (forked instances of a single class, object and event oriented) can be embedded in a single genome. Although this "differentiation" process resemble the development of multicellular organism, we tend to use a more bioengineering style analogy: assembly line. Or maybe after some years from now, this will not be just an analogy.  
Our projects concern with the ability for bacterial cells to differentiate out of homogeneous conditions into populations with the division of labor. We aim at devices conferring host cells with the ability to form cooperating groups spontaneously and to take consecutive steps sequentially even when the genetic background and environmental inputs are identical. To break the mirror in such homogeneous condition, we need two devices respectively responsible for temporal and spatial differentiation. The implementation and application of such devices will lead to bioengineering where complex programs consisted of sequential steps (structure oriented programs) and cooperating agencies (forked instances of a single class, object and event oriented) can be embedded in a single genome. Although this "differentiation" process resemble the development of multicellular organism, we tend to use a more bioengineering style analogy: assembly line. Or maybe after some years from now, this will not be just an analogy.  
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[http://parts.mit.edu/igem07/index.php/Peking Learn More]
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[https://2007.igem.org/Peking Learn More]
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Latest revision as of 10:40, 9 October 2009
 
Team > Previous Years

Peking Univ. 2008 Team

A Genetic Circuit for Directed Evolution in vivo

Directed evolution is a powerful tool for answering scientific questions or constructing novel biological systems. Here we present a simple genetic circuit for in vivo directed evolution which comprises minimal elements for random mutation and artificial selection. We engineer yeast to generate the DNA mutator hAID, an essential protein in adaptive immunity, and target it specifically to a gene of interest. The target gene will be mutated and consequently promptly evolves. By linking the expression of hAID repressor LacI and favorite gene functionality, the mutation rate inversely correlates between the functionality of the desired gene and hAID. This circuit may be adopted for in vivo evolution in eukaryotic system on genetically encoded targets. It has a variety of potential applications in academic and industrial contexts, theoretically most inter-molecular interaction that involves proteins and RNAs.

Learn More

Peking Univ. 2007 Team

Towards Self-differentiated Bacterial Assembly Line

Our projects concern with the ability for bacterial cells to differentiate out of homogeneous conditions into populations with the division of labor. We aim at devices conferring host cells with the ability to form cooperating groups spontaneously and to take consecutive steps sequentially even when the genetic background and environmental inputs are identical. To break the mirror in such homogeneous condition, we need two devices respectively responsible for temporal and spatial differentiation. The implementation and application of such devices will lead to bioengineering where complex programs consisted of sequential steps (structure oriented programs) and cooperating agencies (forked instances of a single class, object and event oriented) can be embedded in a single genome. Although this "differentiation" process resemble the development of multicellular organism, we tend to use a more bioengineering style analogy: assembly line. Or maybe after some years from now, this will not be just an analogy.

Learn More

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