Team:Tsinghua/Experiment

From 2009.igem.org

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Revision as of 15:39, 9 October 2009

Background	Brainstorming	Design	Experiment	Results	Notebook

Based on our basic idea and decoupling principle of synthetic biology, we subdivided our project into three interconnected modules: 1) Synthesis of the GenSniper viroin which involves the synthesis of the GenSniper genome and the production of the viroin; 2) Constructing the Therapeutic DNA which can be paskaged into the GenSniper viroin; 3) Construction and characterization of the targeted biobrick that is responsible for targeted gene delivery. The following wetlab work will demonstrate the synthesis of the Gensniper via the three modules respectively as well as how they work together.

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-We compared and contrasted the structure of viron between adenovirus and bacteriophage lambda, and found the following facts: 1) the shapes of the viron of both adenovirus and bacteriophage lambda is a regular icosohedron, while the adenovirus protein (Fiber) that determines its specificity is positioned on the vertices of the icosohedral viron, which can specifically bind with a receptor called CAR; 2) CAR is widely distributed on the plasma membrane of various types of cells, which partially contributes to its poor specificity to the target cells as well as its potential cytotoxicity; 3) the proliferation of bacteriophage lambda is solely on the basis of its host E.coli, while the production of adenovirus gene therapy vector normally depends on eukaryotic cell lines which are more cost-inefficient and time-consuming; 4) the vertices of adenovirus viron are composed of pentamer of protein III attached to trimer of protein fiber, while the vertices of bacteriophage lambda viron are composed of protein C encoded by lambda phage genome.
+Based on our basic idea and decoupling principle of synthetic biology, we subdivided our project into three interconnected modules: 1) Synthesis of the GenSniper viroin which involves the synthesis of the GenSniper genome and the production of the viroin; 2) Constructing the Therapeutic DNA which can be paskaged into the GenSniper viroin; 3) Construction and characterization of the targeted biobrick that is responsible for targeted gene delivery. The following wetlab work will demonstrate the synthesis of the Gensniper via the three modules respectively as well as how they work together.
-Thus, if we can manage to synthesize a bacteriophage-lambda-based gene therapy vector in simulation to the adenovirus vector but modified at the vertices position of its viron, then the production of the synthetic gene therapy vector can be simplified and much easier to manipulate. In addition, considering the low immunogenicity of lambda phage proteins, the safety of the gene therapy can be improved compared with conventional adenovirus vector.
-We subdivided our project into three interconnected modules as listed.