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<div class="col-sm-12"> | <div class="col-sm-12"> | ||
<div class="banner_title" > | <div class="banner_title" > | ||
− | <h1>Protocol 12</h1> | + | <h1 id="back_to_the_top">Protocol 12</h1> |
</div> | </div> | ||
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<div class="blog_top"> | <div class="blog_top"> | ||
− | <p>< | + | <p><i> 3 replicates for each toluene concentration were realized in order to improve the results statistics </i></p> |
+ | <p><b> Every toluene manipulations were performed under a chemical hood and following the safety protocol available <a href="https://2016.igem.org/Team:Ionis_Paris/Labsafety" ><font color="DeepPink"> here </font></a>. Bacterial culture containing toluene were only openned under the chemical hood. Spectrometer tank as well as 96 wells plate were covered with parafilm before proceeded to OD or luciferase activity measurement.</b></p> | ||
+ | |||
<h4 class="blog" style="margin-top:20px"> | <h4 class="blog" style="margin-top:20px"> | ||
Toluene preparation: stock solutions</h4> | Toluene preparation: stock solutions</h4> | ||
− | <p><b><u> | + | |
+ | |||
+ | <p><b><u>1g/L:</u></b> Dilution of absolute liquid toluene (Cm= 867g/L) to obtain a final toluene concentration at 1g/L: Add 11,53µL of toluene into 10mL ethanol (calculations done from toluene's molecular weight)<br/> | ||
+ | <b><u>100µg/L:</u></b> Dilute 1µL of the first stock solution into 10mL of Ethanol</p> | ||
<h4 class="blog" style="margin-top:20px"> | <h4 class="blog" style="margin-top:20px"> | ||
Inoculation</h4> | Inoculation</h4> | ||
+ | |||
<p>From 1 UFC:<br./> | <p>From 1 UFC:<br./> | ||
− | Resuspend colony in | + | Resuspend a colony in 20mL of LB medium containing chloramphenicol at 25µg/mL but free of toluene and grow over night.<br/> |
− | When turbidity is high, inoculate the appropriate volume of bacteria culture to liquid LB medium | + | When turbidity is high, inoculate the appropriate volume of bacteria culture to liquid LB medium (100mL) containing chloramphenicol. Mix and separate the bacterial culture into several falcon tubes (10mL in each tube) and add toluene to reach the desired toluene concentration. </p> |
− | + | ||
<table> | <table> | ||
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<td> C1 </td> | <td> C1 </td> | ||
<td> C2 </td> | <td> C2 </td> | ||
− | |||
− | |||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td> Bacterial culture (mL) </td> |
<td> 10 </td> | <td> 10 </td> | ||
<td> 10 </td> | <td> 10 </td> | ||
<td> 10 </td> | <td> 10 </td> | ||
− | |||
− | |||
− | |||
</tr> | </tr> | ||
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<td> 0,5 </td> | <td> 0,5 </td> | ||
<td> 50 </td> | <td> 50 </td> | ||
− | |||
− | |||
</tr> | </tr> | ||
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<td> 5 </td> | <td> 5 </td> | ||
<td> 500 </td> | <td> 500 </td> | ||
− | |||
− | |||
− | |||
</tr> | </tr> | ||
</table> | </table> | ||
+ | <table> | ||
+ | <tr> | ||
+ | <td> </td> | ||
+ | <td> C3 </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td> Bacterial culture (mL) </td> | ||
+ | <td> 10 </td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td> Toluene from stock solution 1g/L (µL) </td> | ||
+ | <td> 50 </td> | ||
+ | </tr> | ||
+ | |||
+ | <tr> | ||
+ | <td> Obtain concentration (mg/L) </td> | ||
+ | <td> 5 </td> | ||
+ | </tr> | ||
+ | </table> | ||
− | |||
− | |||
− | |||
<p>Incubate culture at 37°C and 250 rpm. | <p>Incubate culture at 37°C and 250 rpm. | ||
Regularly measure the OD with a spectrophotometer </p> | Regularly measure the OD with a spectrophotometer </p> | ||
− | <h4 class="blog" style="margin-top:20px">OD measurement over time | + | <h4 class="blog" style="margin-top:20px">OD measurement over time </h4> |
− | + | ||
− | < | + | <p> OD measurment were realize every hours until 8 hours after toluene addition <br/> |
+ | <i>NB: The blank must be the clean liquid LB medium</i><br/> | ||
+ | <i>NB : Samples must be diluted if OD is too high (>1) </i> <br/> </p> | ||
+ | |||
+ | <p> | ||
<u>For each culture:</u><br/> | <u>For each culture:</u><br/> | ||
<li> | <li> | ||
− | <p>Pipette | + | <p>Pipette 500µL of culture and dilute in 500µL LB medium used for the culture (dilution 1/10)</p> |
</li> | </li> | ||
<li> | <li> | ||
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</li> | </li> | ||
<li> | <li> | ||
− | <p>Multiply OD of samples with dilution factor ( | + | <p>Multiply OD of samples with dilution factor (2 times here)</p> |
</li> | </li> | ||
</p> | </p> | ||
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<li> | <li> | ||
<a href="Protocol 12"> | <a href="Protocol 12"> | ||
− | <span>Protocol 12 : | + | <span> Protocol 12: Cell Survival assay</span> |
</a> | </a> | ||
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</ul> | </ul> | ||
+ | </aside> | ||
</div> | </div> | ||
<h4 class="sidebar_Hd">Sources</h4> | <h4 class="sidebar_Hd">Sources</h4> | ||
− | <p><li><a href="https://www.qiagen.com/fr/resources/technologies/plasmid-resource-center/growth%20of%20bacterial%20cultures/#Measuring%20cell%20density">Qiagen protocol for measuring cell density</a></li></p> | + | <p><li><a href="https://www.qiagen.com/fr/resources/technologies/plasmid-resource-center/growth%20of%20bacterial%20cultures/#Measuring%20cell%20density"><font color="DeepPink">Qiagen protocol for measuring cell density</font></a></li></p> |
− | + | ||
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− | <h4> | + | <h4>iGEM IONIS</h4> |
− | <p> | + | <p> We're a group of six different schools from the IONIS Education Group. For this |
− | + | competition we wanted to take advantages of the multiple schools and activity field | |
− | + | given by the IONIS education group to create a solid project.</p> | |
+ | <a href="https://2016.igem.org/Team:Ionis_Paris/Team">Read More</a> | ||
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− | <span>Location: | + | <span>Location: 66 Rue Guy Môquet, 94800 Villejuif, France</span> |
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− | <li><a href=" | + | <li><a href="https://2016.igem.org/Team:Ionis_Paris">Home</a></li> |
− | <li><a href=" | + | <li><a href="https://2016.igem.org/Team:Ionis_Paris/Working_at_La_Paillasse">in the Lab</a></li> |
− | <li><a href=" | + | <li><a href="https://2016.igem.org/Team:Ionis_Paris/Measurement"> Side Projects</a></li> |
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− | <li><a href=" | + | Practice</a></li> |
+ | <li><a href="https://2016.igem.org/Team:Ionis_Paris/Team">Team</a></li> | ||
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− | <p> | + | <p>©IONIS_IGEM_2016</a>.</p> |
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Latest revision as of 19:54, 19 October 2016
3 replicates for each toluene concentration were realized in order to improve the results statistics Every toluene manipulations were performed under a chemical hood and following the safety protocol available here . Bacterial culture containing toluene were only openned under the chemical hood. Spectrometer tank as well as 96 wells plate were covered with parafilm before proceeded to OD or luciferase activity measurement. 1g/L: Dilution of absolute liquid toluene (Cm= 867g/L) to obtain a final toluene concentration at 1g/L: Add 11,53µL of toluene into 10mL ethanol (calculations done from toluene's molecular weight) From 1 UFC: Incubate culture at 37°C and 250 rpm.
Regularly measure the OD with a spectrophotometer OD measurment were realize every hours until 8 hours after toluene addition
For each culture: Pipette 500µL of culture and dilute in 500µL LB medium used for the culture (dilution 1/10) Make the blank Measure OD Multiply OD of samples with dilution factor (2 times here)
Protocol 12: Cell Survival assay
Aim: Assess the impact of toluene on a bacteria population
Toluene preparation: stock solutions
100µg/L: Dilute 1µL of the first stock solution into 10mL of Ethanol
Inoculation
When turbidity is high, inoculate the appropriate volume of bacteria culture to liquid LB medium (100mL) containing chloramphenicol. Mix and separate the bacterial culture into several falcon tubes (10mL in each tube) and add toluene to reach the desired toluene concentration.
C0 Control
C1
C2
Bacterial culture (mL)
10
10
10
Toluene from stock solution 100µg/L (µL)
0
0,5
50
Obtain concentration (ng/L)
0
5
500
C3
Bacterial culture (mL)
10
Toluene from stock solution 1g/L (µL)
50
Obtain concentration (mg/L)
5
OD measurement over time
NB: The blank must be the clean liquid LB medium
NB : Samples must be diluted if OD is too high (>1)