Team:HIT-Harbin/Project

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!align="center"|[[Team:HIT-Harbin|Home]]
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!align="center"|[[Team:HIT-Harbin/Team|Team]]
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!align="center"|[https://igem.org/Team.cgi?year=2013&team_name=HIT-Harbin Official Team Profile]
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!align="center"|[[Team:HIT-Harbin/Project|Project]]
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!align="center"|[[Team:HIT-Harbin/Modeling|Modeling]]
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                    <div class="site-description"><h4><span class="colored">Project</span></h4></div>
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                <h5 class="hashed"><span>B-POM: Biological proportional operational Mu-circuit</span></h5>
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== '''Overall project''' ==
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                    <p>In 1990s, Eric Mjolsness and several researchers developed the concept of genetic circuit from electronic circuits, to facilitate research in modeling gene expression and regulation (Mjolsness, Sharp et al. 1991, McAdams and Shapiro 1995, Reinitz and Sharp 1996, Sharp and Reinitz 1998). Upon the inspiration, Ron Weiss, a computer engineer of MIT, constructed an AND-gate genetic circuit in 2001 (Weiss, Knight et al. 2001). Based on Weiss’ pioneering result, the team of Jeff Hasty took IPTG (isopropyl β-D-1-Thiogalactopyranoside) and aTc (anhydrotetracycline) as the inputs and GFP (green fluorescent protein) as the output; demonstrating the AND-gate circuit in a more lucid and applicable way (Hasty, McMillen et al. 2002). In 2005, to investigate the prospect of genetic circuit, Oliver Rackham proved that other kinds of logic circuits are feasible by orthogonal topological structures (Rackham and Chin 2005). In 2013 iGEM, we inherit the idea of resembling electronic circuits. By incorporating AND/OR gate and operational amplifier into one circuit, we create our device-Biological Proportional Operational Mu-circuit (B-POM).
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In comparison with Weiss’ invention, B-POM has only one homogeneous or heterogeneous input and output. Besides, multiple magnitudes of input are distinguishable by the new circuit, and a given input corresponds to a certain output. Moreover, whereas general genetic circuits are vulnerable to the noise of cellular background, B-POM seems more interference-free, implicating the prominent stability of our device.
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</p><p>In applications, we plan to enhance Bio-electric Interface, the device designed by 2012 Edinburg iGEM team. If the input is biochemical signal molecules and the output become electrons, B-POM can be coupled with Bio-electric Interface, that ephemeral processes in cells will be precisely measurable by simple electronic methods and analyzable by computer. B-POM is also helpful in yoghurt producing, where the control of pH is inaccurate. When B-POM is transplanted into yoghurt-producing bacteria, let hydrogen ions be the input and lacR be the output, and select the proper B-POM parameters, then the pH will be steady around 5.5. In short, our inspired and reliable device is promising in various fields.
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Tell us more about your project.  Give us background.  Use this is the abstract of your project.  Be descriptive but concise (1-2 paragraphs)
 
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Boolean logic gates are widely used in electronic circuits to build digital devices. As the fast growing of synthetic biology, a large number of genes which function as Boolean logic gates are used to cascade and integrate multiple environmental and cellular signals [1] . Baojun Wang et al, demonstrate an orthogonal AND gate in Escherichia coli using a novel hetero-regulation module from Pseudomonas syringae[2]. The device comprises two co-activating genes hrpS and hrpR, and a σ54-dependent hrpL promoter. The hrpL promoter is activated only when both hrpS and hrpR genes are expressed.
 
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In our project, based on the hrp system, we developed a proportional amplifier. The device we invented has a input promoter induced by a certain signal or several signals and a output protein which can be what we want to express.
 
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== Project Details==
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                    <a href="https://2013.igem.org/Team:HIT-Harbin/Modeling" class="custom-button">Learn More</a>
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                    <p>Click here and get more details about our project.</p>
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=== Part 2 ===
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=== The Experiments ===
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=== Part 3 ===
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== Results ==
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Latest revision as of 20:37, 24 September 2013

HIT-Harbin

HIT-Harbin

Project

B-POM: Biological proportional operational Mu-circuit

In 1990s, Eric Mjolsness and several researchers developed the concept of genetic circuit from electronic circuits, to facilitate research in modeling gene expression and regulation (Mjolsness, Sharp et al. 1991, McAdams and Shapiro 1995, Reinitz and Sharp 1996, Sharp and Reinitz 1998). Upon the inspiration, Ron Weiss, a computer engineer of MIT, constructed an AND-gate genetic circuit in 2001 (Weiss, Knight et al. 2001). Based on Weiss’ pioneering result, the team of Jeff Hasty took IPTG (isopropyl β-D-1-Thiogalactopyranoside) and aTc (anhydrotetracycline) as the inputs and GFP (green fluorescent protein) as the output; demonstrating the AND-gate circuit in a more lucid and applicable way (Hasty, McMillen et al. 2002). In 2005, to investigate the prospect of genetic circuit, Oliver Rackham proved that other kinds of logic circuits are feasible by orthogonal topological structures (Rackham and Chin 2005). In 2013 iGEM, we inherit the idea of resembling electronic circuits. By incorporating AND/OR gate and operational amplifier into one circuit, we create our device-Biological Proportional Operational Mu-circuit (B-POM).

In comparison with Weiss’ invention, B-POM has only one homogeneous or heterogeneous input and output. Besides, multiple magnitudes of input are distinguishable by the new circuit, and a given input corresponds to a certain output. Moreover, whereas general genetic circuits are vulnerable to the noise of cellular background, B-POM seems more interference-free, implicating the prominent stability of our device.

In applications, we plan to enhance Bio-electric Interface, the device designed by 2012 Edinburg iGEM team. If the input is biochemical signal molecules and the output become electrons, B-POM can be coupled with Bio-electric Interface, that ephemeral processes in cells will be precisely measurable by simple electronic methods and analyzable by computer. B-POM is also helpful in yoghurt producing, where the control of pH is inaccurate. When B-POM is transplanted into yoghurt-producing bacteria, let hydrogen ions be the input and lacR be the output, and select the proper B-POM parameters, then the pH will be steady around 5.5. In short, our inspired and reliable device is promising in various fields.

Learn More

Click here and get more details about our project.