Team:CIDEB-UANL Mexico/WetLab-Results

From 2013hs.igem.org

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<p align="justify"><b>May, 23th, 2013</b><br>
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<p align="justify">Here there is a construction map of the circuit:</p>
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Today we started officially the work in the lab.  We resuspended all the biobricks we were going to use and transformed them. We also transformed a positive control at 1ng/µL that was not a biobrick. </p>
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<p align="justify"><b>May, 24th, 2013</b><br>
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<img src="https://static.igem.org/mediawiki/2013hs/0/0d/Imagen_circuito.png" width="500px" height="350px" /></p>
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Today we checked the Petri dishes and the positive control worked but the biobricks did not grow.
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We quantified the DNA with the nanodrop but the results obtained were not reliable. </p>
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<p align="justify">We had a lot of problems with the part "PCC1" because there were problems when it was synthesized. When we cut it it only cut in one size couldn't cut it as we expected but we used it in the ligation anyways because all the other parts cut very well except this one. The part "PUC-57" worked very well while cutting with the restriction enzymes and at the ligation. For the Friday 21th, 2013, we got colonies of both ligations. We think the "PCC1" is not a good ligation because it did not released the fragment. But we are going to characterize the part with the "PUC-57" the next week. We cannot be sured right now because it doesn't have a reporter.</p>
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<p align="justify"><b>May, 29th, 2013</b><br>
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Today we made competent cells and we transformed 4 DNAs that are not biobricks and 2 biobricks that are not in our construction plan. </p>
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<p align="justify">We also uploaded to the Parts Registry the design of our new part.<a href="http://parts.igem.org/partsdb/edit_seq.cgi?part=BBa_K987000";><font color="blue"> http://parts.igem.org/partsdb/edit_seq.cgi?part=BBa_K987000</font></a></p>
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<p align="justify"><b>May, 30th, 2013</b><br>
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<p align="justify"> Here is the composite part<a href="http://parts.igem.org/cgi/partsdb/part_info.cgi?part_id=28522";><font color="blue"> http://parts.igem.org/cgi/partsdb/part_info.cgi?part_id=28522</font></a></p>
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The competent cells worked very well, the 4 DNAs grew with an efficiency of 1.27x10^6 of the cells. The other 2 biobricks did not grow again. We tried again transforming the biobricks with the new cells. </p>
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<p align="justify"><b>May, 31th, 2013</b><br>
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Today we got cells of the GFP, YFP and CFP with degradation tag. We observed the cells in the microscope, the GFP with tag degradation seemed to be better than the YFP and the RFP. Also, today we transformed the plasmids pSB1T3, pSB1C3 and pSB1K3 that were sent to us accompanied by the biobricks. We picked up the colonies of the reporters and we placed them in a test tube with LB medium. </p>
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<p align="justify"><b>June, 1st, 2013</b><br>
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<p align="justify"><b><font color="red" size="25px">Conclusion:</font></b><br><br>
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We only got the plasmids pSB1K3 and pSB1C3. We picked up the colonies of both plasmids and we placed them in a test tube with LB medium. </p>
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The team focused strongly on the lab work to reach the goal of the project, which is the creation of a bacterium capable of producing a bio-insecticide that helps the potato crop against the plagues of worms. The idea include two central systems working together to produce the insecticide in the best conditions. The lab work focused on the creation of these two parts of the system and for that reason it was necessary the synthetize of two gens which were the Vip3ca3 and the Riboswitch, parts that weren’t found in the parts registry. The lab work started until these two parts were mailed to us from United States. </p>
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<p align="justify"><b>June 3rd, 2013</b><br>
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We did MiniPreparation of Plasmidic DNA of the 3 reporters GFP, YFP, CFP and the 2 plasmids pSB1K3 and pSB1C3. We ran the electrophoresis gel with the 5 DNAs.
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<p align="justify">When the parts finally arrived, the work in the lab wasn’t capable of obtain the gen of the Vip3Ca3 in good conditions, only the PUC-57 was growing and its DNA was showed correctly on the gels. Even this we continue with the cuts and ligations to see if we can obtain any special results. After two weeks trying the ligations weren’t growing in the Petri Dishes, so the whole process continue on the last week. </p>
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Also, we transformed the synthetic DNAs that just arrived today that are in the PCCI and PUC-57 plasmids. Also this day, we pick up some colonies from the samples of the 5-14O, 5-4E and 5-14I dishes; which were the same reporters that the ones used in the MiniPrep, but these samples were from previous samples then were from the past iGem team. These were stored in the incubator. </p>
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<p align="justify"><b>June 4th, 2013</b><br>
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<p align="justify">The last morning, the Petri’s Dishes showed some colonies which should represent the cuts that were done one weeks before, which means the cuts may be succesful and deeper studies will be done to the sample to characterize if the ligations were actually done. The strongest evidence to support this affirmation is the color of the colonies which relate to the description of the gens. </p>
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We got a lot of colonies of PCCI and very few of the PUC-57. As the colonies with the cI biobrick did not grow, we transformed it again and a little more of the PUC-57. We also cloned cells to make competent cells.This day we noticed that the colonies of reporters that we picked up the day before didn’t grow. Again this day the colonies of GFP, CFP and YFP and also the PCC1 and PUC-57 were picked up and inserted in other tubes with other LB medium, and again were stored in the incubator. </p>
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<p align="justify"><b>Further applications</b><br>
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<p align="justify"><b>June 5th, 2013</b><br>
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The project was thought to be done in a bacterium, but the further plan is to made a transgenic plant that do the same function that the bacteria, to develop its own bio-insecticide, and then to be used in the city crops so the plague can be fight and the potatoes are not affected. Also the idea of the gellan gums can be used in order to maintain a suitable environment for the bacteria. These ideas may be applied or tested in a deeper way in a further work.</p>
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We are not able to make competent cells because the cells did not grow. No one of the colonies grew. We cloned again from the Petri dishes of the PCCI, PUC-57 and we tried again with the cI repressor biobrick, into the test tubes with LB medium.With the MiniPrep DNA’s done two days ago, a characterization was done in order to finally obtain the pieces and so we can be able to bind the genes. The reporters were cut, but when electrophoresed in agarose gel doesn’t show a good result. </p>
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<p align="justify"><b>June 6th, 2013</b><br>
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We got bacteria in the test tubes so we made miniPreparation of plasmidic DNA. We also cloned from tube to tube in order to have more cells as a backup. This day, the characterization was done again, now with more specifications with the enzymes. This time, the cuts went well with the 5-14I and 5-14G samples, because the image of the agarose gel showed the correct size. Also this day, MiniPrep was realized to the samples of the PCCI, PUC and 5-4E. The result of the electrophoresis showed a very degraded DNA, but still it showed a good result. </p>
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<p align="justify"><b>June 7th, 2013</b><br>
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We did miniPreparation of DNA again.This day, the electrophoresis of yesterday MiniPreps was done again and it showed, as expected, more degradation of the DNA. Anyway, it was decided to do the cuts of the parts, each part with the respective enzymes:
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- GFP was cut with EcoI and SpeI
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- 5-4E was cut with XbaI and Pst
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- PUCI was cut with EcoI and SpeI
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After the electrophoresis, the results doesn’t showed a good cut and also showed the DNA very degraded. </p>
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<p align="justify"><b>June 10th, 2013</b><br>
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We prepared a digestion with the restriction enzymes with all the parts that we were going to need. This day it was done a replanting of the reporters GFP, CFP and YFP, and the plasmids 1-5A and 1-3A into LB medium and they were stored in the incubator. Also an electrophoresis was done with Friday’s cuts again, showing the same results. </p>
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<p align="justify"><b>June 11th, 2013</b><br>
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On this day, the colonies that were replanted yesterday doesn’t grow up, but even this we tried a MiniPrep in each sample. The results of the electrophoresis showed that only 3 DNA’s went well, while the other ones showed a faint DNA. Anyway, we decided to do the cuts with the enzymes of the 3 DNA’s that went well. Also this day, another replanting was done with the same samples of yesterday, to see if they grow correctly tomorrow. </p>
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<p align="justify"><b>June 12th, 2013</b><br>
 
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The cuts that were done yesterday, were subject of an electrophoresis in agarose gel, the cuts showed the expected results except for the PCC1. It was decided to start all the MiniPreps again, to have a backup in case ligation would not function. This means a MiniPrep of all the reporter samples, GFP, YFP and CFP; the plasmids 1-3A and 1-5A; and the PUC, PCCI and 5-4E samples. After this, the results in the agarose gel show a very faint result with the DNA of the samples.
 
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Today also we ligated the cuts:<br>
 
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Ligation1: <br>
 
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Backbone 1-5A <br>
 
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Insert1 PUC-57<br>
 
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Insert2 5-4E<br>
 
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Buffer 4uL<br>
 
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Ligase 1uL<br>
 
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H2O mQ 0<br>
 
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<br>
 
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<br>
 
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Ligation2: <br>
 
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Backbone 1-3A <br>
 
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Insert1 5-14G<br>
 
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Insert2 PCC1<br>
 
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Buffer 4uL<br>
 
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Ligase 1uL<br>
 
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H2O mQ 0</p>
 
</td>
</td>
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</tr>

Latest revision as of 03:32, 22 June 2013

Wet-Lab
Results

Here there is a construction map of the circuit:

We had a lot of problems with the part "PCC1" because there were problems when it was synthesized. When we cut it it only cut in one size couldn't cut it as we expected but we used it in the ligation anyways because all the other parts cut very well except this one. The part "PUC-57" worked very well while cutting with the restriction enzymes and at the ligation. For the Friday 21th, 2013, we got colonies of both ligations. We think the "PCC1" is not a good ligation because it did not released the fragment. But we are going to characterize the part with the "PUC-57" the next week. We cannot be sured right now because it doesn't have a reporter.

We also uploaded to the Parts Registry the design of our new part. http://parts.igem.org/partsdb/edit_seq.cgi?part=BBa_K987000

Here is the composite part http://parts.igem.org/cgi/partsdb/part_info.cgi?part_id=28522

Conclusion:

The team focused strongly on the lab work to reach the goal of the project, which is the creation of a bacterium capable of producing a bio-insecticide that helps the potato crop against the plagues of worms. The idea include two central systems working together to produce the insecticide in the best conditions. The lab work focused on the creation of these two parts of the system and for that reason it was necessary the synthetize of two gens which were the Vip3ca3 and the Riboswitch, parts that weren’t found in the parts registry. The lab work started until these two parts were mailed to us from United States.

When the parts finally arrived, the work in the lab wasn’t capable of obtain the gen of the Vip3Ca3 in good conditions, only the PUC-57 was growing and its DNA was showed correctly on the gels. Even this we continue with the cuts and ligations to see if we can obtain any special results. After two weeks trying the ligations weren’t growing in the Petri Dishes, so the whole process continue on the last week.

The last morning, the Petri’s Dishes showed some colonies which should represent the cuts that were done one weeks before, which means the cuts may be succesful and deeper studies will be done to the sample to characterize if the ligations were actually done. The strongest evidence to support this affirmation is the color of the colonies which relate to the description of the gens.

Further applications
The project was thought to be done in a bacterium, but the further plan is to made a transgenic plant that do the same function that the bacteria, to develop its own bio-insecticide, and then to be used in the city crops so the plague can be fight and the potatoes are not affected. Also the idea of the gellan gums can be used in order to maintain a suitable environment for the bacteria. These ideas may be applied or tested in a deeper way in a further work.

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