Team:Imperial College London/M2/FreezeDrying

From 2009.igem.org

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(Module 2 : Encapsulation)
(Freeze Drying)
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[[Image:IceBac2.png|left|250px]]
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Cells can be stored for extended periods of time by dehydration. However, under such conditions the integrety of both a cell's membrane and intracellular polypeptides can be compromised.
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An important consideration when designing the E.ncapsulator was the ability to store the cells for extended periods of time. While biological material can be stored for extended periods of time by dehydration, under such conditions the integrety of both a cell's membrane and intracellular polypeptides can be compromised.
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Trehalose is a disaccharide formed from two glucose molecules that provides resistance to dessication. While trehalose is naturally produced in <i>E.coli</i>, we hope that by upregulating its production, we can confer additional resistance to freeze drying. This would allow easy transport and storage of the final product.
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OtsA and OtsB are the two genes required for trehalose production. We hope that by introducing additional copies of these genes on a plasmid we can boost trehalose production.  
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In order to preserve the integrity of our protein of interest during storage of the E.ncapsulator, we decided to incorporate a device for trehalose production within our system. Trehalose is a disaccharide formed from two glucose molecules. Throughout nature, trehalose is associated with resistance to dessication and cold shock, and is naturally produced in E.coli. We hope that by upregulating the trehalose production pathways in E.coli we can increase trehalose concentrations within our cell, thereby conferring some resistance to protein degredation in our system.
<html><a href="https://2009.igem.org/Team:Imperial_College_London/M2/Trehalose"><img width=50px src="http://i691.photobucket.com/albums/vv271/dk806/II09_Learnmore.png" align="left"></a></html>&nbsp; <b><i>About the protective effects of trehalose.</i></b>
<html><a href="https://2009.igem.org/Team:Imperial_College_London/M2/Trehalose"><img width=50px src="http://i691.photobucket.com/albums/vv271/dk806/II09_Learnmore.png" align="left"></a></html>&nbsp; <b><i>About the protective effects of trehalose.</i></b>

Revision as of 13:40, 17 October 2009

II09 Thumb m2.pngModule 2 - Encapsulsation Overview

II09 TimelineM2.png

Freeze Drying

IceBac2.png

An important consideration when designing the E.ncapsulator was the ability to store the cells for extended periods of time. While biological material can be stored for extended periods of time by dehydration, under such conditions the integrety of both a cell's membrane and intracellular polypeptides can be compromised.

In order to preserve the integrity of our protein of interest during storage of the E.ncapsulator, we decided to incorporate a device for trehalose production within our system. Trehalose is a disaccharide formed from two glucose molecules. Throughout nature, trehalose is associated with resistance to dessication and cold shock, and is naturally produced in E.coli. We hope that by upregulating the trehalose production pathways in E.coli we can increase trehalose concentrations within our cell, thereby conferring some resistance to protein degredation in our system.

  About the protective effects of trehalose.



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