Team:HKU HongKong/Project/Background.html

From 2012.igem.org

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<font color="#232323">&nbsp;&nbsp;Human Practise&nbsp;&nbsp;</font></a></li>
<font color="#232323">&nbsp;&nbsp;Human Practise&nbsp;&nbsp;</font></a></li>
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<h2 style="font-variant: normal; vertical-align: baseline; clear: left; color: #232323; font-family: Gentium Basic; letter-spacing: normal; line-height: 19.5px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; border: 0px none; margin: 0.7em 0px; padding: 0px">
 
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<font face="Trebuchet MS" size="6">Abstract</font></span></h2>
 
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<p style="text-align: left; font-style: normal; font-variant: normal; font-weight: normal; font-size: 13px; vertical-align: baseline; color: #232323; font-family: Lato, Tahoma, Arial, sans-serif; letter-spacing: normal; line-height: 19.5px; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; border: 0px none; margin-left: 0px; margin-right: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px">
 
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HKU’s iGEM team aims to introduce
 
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an acyl homoerine lactone (AHL)-degrading genetic system into the non-biolfilm-forming
 
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and non-virulent BL21 Escherichia coli strain. PvdQ, an enzyme naturally
 
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produced by Pseudomonas aeruginosa, is an acylase that functions to
 
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degrade long chain AHLs that bacteria like Pseudomonas putida or
 
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aeruginosa itself utilize for biofilm formation. Biofilms are population
 
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density-dependent structures formed by quorum sensing bacteria that
 
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produce and secrete auto-inducers, which signal selective gene
 
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transcription. These signaling molecules, namely the AHLs, are
 
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responsible for most bacterial pathogenicity including the opportunistic
 
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respiratory infections caused by P.aeuroginosa in immunocompromised
 
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patients. </p>
 
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As a step towards combating these infections, E.coli can be effectively
 
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used as a protein factory to maximize pvdQ yield in vitro or ex vivo.
 
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Our most preliminary biobrick is a constitutive promoter that drives
 
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baseline, exponential expression of pvdQ. This genetic pathway is
 
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advantageous because the pvdQ gene is constitutively transcribed
 
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regardless of environmental and endogenous factors.&nbsp; </p>
 
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Revision as of 17:09, 21 September 2012