Team:UANL Mty-Mexico/Wet lab/Light experiments
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WetLab: Light Experiments | WetLab: Light Experiments | ||
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- | <div class="br2"></div><div class="br2"></div><div class="br2"></div> | + | <a name="Overview"></a>Overview |
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+ | Light experiments were planed to demonstrate the function of HuBac community, controlling expression of five different products through a simple light-based code. | ||
+ | |||
+ | This experiments mainly consisted as follows: | ||
+ | <ol> | ||
+ | <li>Testing the function of our light inducing device (<a href="https://2011.igem.org/Team:UANL_Mty-Mexico/Contributions/Light_Machine" title="Light Machine">Light Machine</a>) by using original Dr. Jeff Tabor's plasmids.</li> | ||
+ | <li>2.- Trials of the HuBac community function using "the simplest version of the circuit" which was designed to demonstrate that biphasic switch works as expected.</li> | ||
+ | </ol> | ||
+ | Also, another experiments were planed to test our new <a href="https://2011.igem.org/Team:UANL_Mty-Mexico/Contributions/Parts">parts</a>. Each of them are detailed in the next paragraphs. | ||
+ | </p> | ||
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+ | <div class="br2"></div> | ||
+ | <div class="br2"></div> | ||
+ | <div class="br2"></div> | ||
+ | <a name="LightMachine"></a>Light Machine Tests | ||
+ | <div class="br2"></div> | ||
+ | <div class="br2"></div> | ||
+ | <div class="br2"></div> | ||
+ | </div> | ||
+ | <div class="br"></div> | ||
+ | <div class="br"></div> | ||
+ | <span class="subtitle"> | ||
+ | Preparing light-inducible <i>E. coli</i> JT2 cells. | ||
+ | </span> | ||
+ | |||
+ | <p> | ||
+ | For testing that Light Machine worked as expected, light-inducible JT2 cells were transformed with different plasmids as specified in the next table: | ||
+ | </p> | ||
+ | <center> | ||
+ | <table width="680px"> | ||
+ | <tr class="yellow"> | ||
+ | <td class="width" align="center">Cell</td> | ||
+ | <td class="adjacent">Description</td> | ||
+ | <td class="adjacent">Plasmids</td> | ||
+ | <td class="adjacent">Constructed</td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td class="bold" align="center">Green Cell</td> | ||
+ | <td class="adjacent">Responds to green-light producing LacZ</td> | ||
+ | <td class="adjacent">pJT122, pPLPCB(S)</td> | ||
+ | <td class="adjacent">Done</td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td class="bold" align="center">Green Cell (-)</td> | ||
+ | <td class="adjacent">Does not respond to green light due to absence of chromophore. Used as negative control for Green Cell.</td> | ||
+ | <td class="adjacent">pJT122</td> | ||
+ | <td class="adjacent">Done</td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td class="bold" align="center">Red Cell</td> | ||
+ | <td class="adjacent">Responds to red-light producing LacZ</td> | ||
+ | <td class="adjacent">pCph8, pJT106, pPLPCB(S)</td> | ||
+ | <td class="adjacent">Done</td> | ||
+ | </tr> | ||
+ | |||
+ | <td class="bold" align="center">Red Cell (-)</td> | ||
+ | <td class="adjacent">Does not respond to green light due to absence of chromophore. Used as negative control for Red Cell.</td> | ||
+ | <td class="adjacent">pCph8, pJT106</td> | ||
+ | <td class="adjacent">Done</td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td class="bold" align="center">RedGreen Cell</td> | ||
+ | <td class="adjacent">Responds to red OR green light producing LacZ.</td> | ||
+ | <td class="adjacent">pJT122, pCph8, pPLPCB(S)</td> | ||
+ | <td class="adjacent">------</td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td class="bold" align="center">RedGreen Cell (-)</td> | ||
+ | <td class="adjacent">Does not respond to green light due to absence of chromophore. Used as negative control for RedGreen Cell.</td> | ||
+ | <td class="adjacent">pJT122, pCph8</td> | ||
+ | <td class="adjacent">Done</td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </center> | ||
+ | <div class="br"></div> | ||
+ | <div class="br"></div> | ||
+ | <div class="br"></div> | ||
+ | <div class="br"></div> | ||
+ | |||
+ | |||
+ | |||
+ | <center> | ||
+ | <div class = "img-holder" style="width:620px"> | ||
+ | <a href="https://static.igem.org/mediawiki/2011/1/1d/Bitacora-toWiki.056.png" rel="lightbox" title="Characterization of multiple plasmids transformed into <i>E. coli</i> JT2 strain"> | ||
+ | <img src="https://static.igem.org/mediawiki/2011/1/1d/Bitacora-toWiki.056.png" width="596" height="443" alt="pTKRED into JT2" align="center"> | ||
+ | </a> | ||
+ | <span class="img-holder-text"><b>Characterization of multiple plasmids transformed into <i>E. coli</i> JT2 strain</b></span> | ||
+ | </div> | ||
+ | </center> | ||
+ | |||
+ | |||
+ | <span class="subtitle"> | ||
+ | Testing Light Machine | ||
+ | </span> | ||
+ | <p> | ||
+ | Green Cells were plated on LB agar media and incubated overnight in absence of light. After that, plates were exposed to green light (532 nm) during 6 hours. Individual colonies were picked up, resuspended on 5 uL of H20 by vortex. After this,10 uL of X-gal were added (20 mg/mL), and there was an incubation period of 30 minutes at 37ºC, finally samples were centrifuged for precipitating cells. | ||
+ | </p> | ||
+ | <p> | ||
+ | Negative control used in this case was a duplicate culture of Green Cells that was all-time covered for avoiding light induction. | ||
+ | </p> | ||
+ | <p> | ||
+ | It may be observed a qualitative difference between sample and negative control. | ||
+ | </p> | ||
+ | |||
+ | <center> | ||
+ | <div class = "img-holder" style="width:448px"> | ||
+ | <a href="https://static.igem.org/mediawiki/2011/d/d4/Bitacora-toWiki.023.png" rel="lightbox" title="Characterization of multiple plasmids transformed into <i>E. coli</i> JT2 strain"> | ||
+ | <img src="https://static.igem.org/mediawiki/2011/d/d4/Bitacora-toWiki.023.png" width="448" height="236" alt="pTKRED into JT2" align="center"> | ||
+ | </a> | ||
<div class="br"></div> | <div class="br"></div> | ||
- | < | + | <span class="img-holder-text"><b>First test of Light Machine.</b> <i>A)</i> Sample exposed to green light, <i>B)</i> Negative control</span> |
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+ | <a name="Summary"></a>Summary | ||
+ | <div class="br2"></div> | ||
+ | <div class="br2"></div> | ||
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+ | </div> | ||
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+ | <p> | ||
+ | <center> | ||
+ | <table width="450px"> | ||
+ | <tr> | ||
+ | <th colspan="3">Integration procedure</th> | ||
+ | </tr> | ||
+ | <tr class="yellow"> | ||
+ | <td align="center">Steps</td> | ||
+ | <td class="adjacent">Status</td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td class="bold" align="left">Transforming with helper plasmid pTKRED</td> | ||
+ | <td class="adjacent">Done</td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td class="bold" align="left">Integration of Landing Pad</td> | ||
+ | <td class="adjacent">Done</td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td class="bold" align="left">Transforming with pTKIP plasmid.</td> | ||
+ | <td class="adjacent">Done</td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td class="bold" align="left">Recombination of pTKIP plasmid with Landind Pad.</td> | ||
+ | <td class="adjacent">In progress</td> | ||
+ | </tr> | ||
+ | |||
+ | </table> | ||
+ | </center> | ||
+ | </p> | ||
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+ | <a name="References"></a>References | ||
+ | <div class="br2"></div> | ||
+ | <div class="br2"></div> | ||
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+ | </div> | ||
+ | |||
+ | <ol> | ||
+ | <li>Kuhlman TE, Cox EC (2010) Site-specific chromosomal integration of large synthetic constructs <i>Nucleic Acids Res</i> <b>38</b>:e92.</li> | ||
+ | </ol> | ||
+ | |||
+ | |||
+ | </div> | ||
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- | + | <div class="lateral-button"><a href="#Overview">Overview</a></div> | |
- | + | <div class="lateral-button"><a href="#Procedure">Procedure</a></div> | |
- | + | <div class="lateral-button"><a href="#Summary">Summary</a></div> | |
+ | <div class="lateral-button"><a href="#References">References</a></div> | ||
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Revision as of 00:29, 29 September 2011
Light experiments were planed to demonstrate the function of HuBac community, controlling expression of five different products through a simple light-based code. This experiments mainly consisted as follows:
- Testing the function of our light inducing device (Light Machine) by using original Dr. Jeff Tabor's plasmids.
- 2.- Trials of the HuBac community function using "the simplest version of the circuit" which was designed to demonstrate that biphasic switch works as expected.
For testing that Light Machine worked as expected, light-inducible JT2 cells were transformed with different plasmids as specified in the next table:
Cell | Description | Plasmids | Constructed |
Green Cell | Responds to green-light producing LacZ | pJT122, pPLPCB(S) | Done |
Green Cell (-) | Does not respond to green light due to absence of chromophore. Used as negative control for Green Cell. | pJT122 | Done |
Red Cell | Responds to red-light producing LacZ | pCph8, pJT106, pPLPCB(S) | Done | Red Cell (-) | Does not respond to green light due to absence of chromophore. Used as negative control for Red Cell. | pCph8, pJT106 | Done |
RedGreen Cell | Responds to red OR green light producing LacZ. | pJT122, pCph8, pPLPCB(S) | ------ |
RedGreen Cell (-) | Does not respond to green light due to absence of chromophore. Used as negative control for RedGreen Cell. | pJT122, pCph8 | Done |
Green Cells were plated on LB agar media and incubated overnight in absence of light. After that, plates were exposed to green light (532 nm) during 6 hours. Individual colonies were picked up, resuspended on 5 uL of H20 by vortex. After this,10 uL of X-gal were added (20 mg/mL), and there was an incubation period of 30 minutes at 37ºC, finally samples were centrifuged for precipitating cells.
Negative control used in this case was a duplicate culture of Green Cells that was all-time covered for avoiding light induction.
It may be observed a qualitative difference between sample and negative control.
Integration procedure | ||
---|---|---|
Steps | Status | |
Transforming with helper plasmid pTKRED | Done | |
Integration of Landing Pad | Done | |
Transforming with pTKIP plasmid. | Done | |
Recombination of pTKIP plasmid with Landind Pad. | In progress |
- Kuhlman TE, Cox EC (2010) Site-specific chromosomal integration of large synthetic constructs Nucleic Acids Res 38:e92.