|
|
Line 1: |
Line 1: |
| <html> | | <html> |
| | | |
- | <div class="post-621 post type-post status-publish format-standard hentry category-2011 category-europe-regionals category-igem">
| + | <div class="post-656 post type-post status-publish format-standard hentry category-igem category-liveblog tag-cloning tag-expresion tag-warsaw"> |
- | <h1>Opening Ceremony</h1>
| + | <span class="postlabel"><a href="http://igemwatch.net/?p=656"><span>01</span>Oct</a></span> |
- | <div class="entry"><p>Here is our coverage from the opening session of the Europen iGEM regionals 2011:</p>
| + | |
| + | <h2 class="post-title"><a href="http://igemwatch.net/?p=656">Warsaw – Synthetic cloning and expression control</a></h2> |
| + | <p class="info"> |
| + | <span class="catinfo">Filed in <a href="http://igemwatch.net/?cat=7" title="View all posts in iGEM" rel="category">iGEM</a> | <a href="http://igemwatch.net/?cat=75" title="View all posts in Liveblog" rel="category">Liveblog</a></span> |
| + | <span class="cmtinfo"><a href="http://igemwatch.net/?p=656#respond" title="Comment on Warsaw – Synthetic cloning and expression control">Leave a comment</a> | <a class="post-edit-link" href="http://igemwatch.net/wp-admin/post.php?post=656&action=edit" title="Edit Post"> Edit</a></span> |
| + | |
| + | </p> |
| + | <div class="entry"><p>Five students from Warsaw come up with a double-project. First, they want to bring regulation in expression levels via expression adapters: This will allow better control on how much gene product is product in time. Second, they present a novel method to get your BioBrick DNA ready for cloning in just two hours (well, … virtually – but still faster!).</p> |
| + | <p>The first part of the project deals with expression adapters. They created 5 expression adapters leading to different expression levels and committed their BioBricks. Use of RBS calculator to check your perfect expression adapters. Their created model worked fine.</p> |
| + | <p> </p> |
| + | <p>algorithm data line for expression adapter modelling:</p> |
| + | <p>Starting population</p> |
| + | <p>RBS calc</p> |
| + | |
| + | <p>best seque -> pop data -> order seq</p> |
| + | <p>beset survive</p> |
| + | <p>Mutate recombine</p> |
| + | <p>new populations</p> |
| + | <p> </p> |
| + | <p>The second part deals with problems with cloning. Often the gene of interest might be toxic to your host cells. The solution they provide is a synthetic cloning step with the phi 29 polymerase (Rolling circle amplification). Hence you do not deal with GMOs unless the last step of cloning => the transformation. This might increase Biosafety.</p> |
| + | |
| + | <p>Human practices</p> |
| + | <p>Synthetic cloning can be seen as a new safety standard, because of the lack of bacteria escaping out of the laboratory.. They co-operated with the BioCen team-up, which provides innovative bioscience education in Warsaw. They keep contact with their friends via their facebook homepage.</p> |
| + | <p>Q&A</p> |
| + | <p>Cells still involved in cloning at the end, but process can be used for cell-free expression. phi29 is able to work with high fidelty, hence there will not be any failures introduced by the polymerase. Further the system is very cheap, you have to calculate one euro per cloning pcr.They faced problems regarding public awareness in Poland. there is a no GMO to students opinion. Hence they choose to do the synthetic cloning.</p> |
| + | </div> |
| + | |
| + | |
| + | <div class="post-673 post type-post status-publish format-standard hentry category-2011 category-europe-regionals category-igem"> |
| + | <span class="postlabel"><a href="http://igemwatch.net/?p=673"><span>01</span>Oct</a></span> |
| + | <h2 class="post-title"><a href="http://igemwatch.net/?p=673">EPF-Lausanna: Transcription Factor Development Pipeline</a></h2> |
| + | <p class="info"> |
| + | <span class="catinfo">Filed in <a href="http://igemwatch.net/?cat=15" title="View all posts in 2011" rel="category">2011</a> | <a href="http://igemwatch.net/?cat=72" title="View all posts in Europe Regionals" rel="category">Europe Regionals</a> | <a href="http://igemwatch.net/?cat=7" title="View all posts in iGEM" rel="category">iGEM</a></span> |
| + | |
| + | <span class="cmtinfo"><a href="http://igemwatch.net/?p=673#respond" title="Comment on EPF-Lausanna: Transcription Factor Development Pipeline">Leave a comment</a> | <a class="post-edit-link" href="http://igemwatch.net/wp-admin/post.php?post=673&action=edit" title="Edit Post"> Edit</a></span> |
| + | </p> |
| + | <div class="entry"><p>Raphael, Donatello Leonardo and Michelangelo. They are all here. Yeah, dressed as ninja turtles. This brings back memories….I miss the nineties.</p> |
| + | <p>Some problems with the MacBook and projector. 1/5 of the presentation is not visible, but now they have to start anyway.</p> |
| + | <p>Idea: A tool box with a lot of transcription factors (TFs). For this, a TF development pipeline consiting of a selecetion and characterization system is needed.</p> |
| + | |
| + | <p>A negative selection system based on lysis is presented. Also, they were able to recover plasmid DNA coding for the functional variant.</p> |
| + | <p><em>In vitro</em> and<em> in vivo</em> characterization systems were set up successfully. So this part of the project also worked and they were able to characterize differnt TFs with a changed specificity.</p> |
| + | <p>Vivid presentation.</p> |
| + | <p>Strange. Neither the DTU Denmark nor the EPF Lausanne presented PR work.</p> |
| + | </div> |
| + | |
| + | |
| + | <div class="post-679 post type-post status-publish format-standard hentry category-2011 category-europe-regionals category-igem tag-auxin tag-desertification tag-icl tag-imperial-college-london"> |
| + | <span class="postlabel"><a href="http://igemwatch.net/?p=679"><span>01</span>Oct</a></span> |
| + | <h2 class="post-title"><a href="http://igemwatch.net/?p=679">Imperial College London: When Auxin met Root</a></h2> |
| + | <p class="info"> |
| + | <span class="catinfo">Filed in <a href="http://igemwatch.net/?cat=15" title="View all posts in 2011" rel="category">2011</a> | <a href="http://igemwatch.net/?cat=72" title="View all posts in Europe Regionals" rel="category">Europe Regionals</a> | <a href="http://igemwatch.net/?cat=7" title="View all posts in iGEM" rel="category">iGEM</a></span> |
| + | |
| + | <span class="cmtinfo"><a href="http://igemwatch.net/?p=679#respond" title="Comment on Imperial College London: When Auxin met Root">Leave a comment</a> | <a class="post-edit-link" href="http://igemwatch.net/wp-admin/post.php?post=679&action=edit" title="Edit Post"> Edit</a></span> |
| + | </p> |
| + | <div class="entry"><p>Liveblog from the ICL presentation:</p> |
| + | <script type="text/javascript"> |
| + | /*<![CDATA[ */ |
| + | setTimeout(live_blogging_poll, 15000, "679") |
| + | /*]]>*/ |
| + | </script><div id="liveblog-679"><div id="liveblog-entry-696"><p><strong>10.27</strong></p><p><strong>Q & A:</strong></p> |
| + | |
| + | <p>Q: How does the auxin get out of the cell?</p> |
| + | <p>A: There is no active transport needed, auxin diffuses out of the cell.</p> |
| + | <p> </p> |
| + | <p>Q: Will your modified plants have an advantage over the naturally occuring plants?</p> |
| + | <p>A: The plants would have an edge over the normal vegetation, since the longer roots would allow them to absorb water more easily.</p> |
| + | <p> </p> |
| + | <p>Q: How long do the plants retain E.Coli in their roots?</p> |
| + | <p>A: Arabidopsis retain bacteria for ~10days in their roots.</p> |
| + | <div style="width:100%; height:1px; background-color:#6f6f6f; margin-bottom:3px;"></div></div><div id="liveblog-entry-685"><p><strong>10.22</strong></p><p>Nickie and Chris are going to present the project AuxIn, starting out with a video showcasing their most important results – Really good idea!</p> |
| + | |
| + | <p>Nicky is giving an introduction to their project, explaining what they want to do with their project: fighting desertification. They want to engineer plant roots to keep the soil layers together and thereby fertile. The team engineered bacteria instead of plants, since it would be a more modular and versatile approach.</p> |
| + | <p>The first module of the project is making the bacteria migrate (chemotaxis) toward the plant roots. It’s called Phyto-Route.</p> |
| + | <p>The second module of the project encompasses the bacteria secreting the plant growth hormone auxin in plant roots, Auxin Xpress.</p> |
| + | <p>The third part of the project is called GeneGuard, which is acontainment device instead of the usually used kill swicth mechanisms. This is supposed to improve the safety of the project and make GMO release in the environment less dangerous.</p> |
| + | <p>Chris is now going into detail with the project’s modules:</p> |
| + | <p><strong>Phyto-Route</strong></p> |
| + | <p>First up, the chemotaxis. For this the team introduced a malate receptor into the bacterial chemotaxis pathway, so that malate acts as a chemoattractant.When they compared the velocity of the chemotaxis modified bacteria and their controls in a medium saturated with malate, it showed that the malatesensing bacteria traveled at higher velocities, which indicates the stimulation of the chemotaxis pathway.</p> |
| + | <p><strong>Auxin expression</strong></p> |
| + | |
| + | <p>This module started out with modeling to find out how much production of auxin by the bacteria was need to achieve enhanced plant growth. The construct for this consists of the PVeg2 promoter, the IaaM gene and the IaaH gene which are involved in the biosynthesis of Auxin. The results they achieved: The bacteria succesfully produce auxin and enhance the growth of arabidopsis compared to normal arabidopsis (without bacteria).</p> |
| + | <p><strong>GeneGuard</strong></p> |
| + | <p>This module introduces holin (a toxin) and anti-holin (the anti-toxin), to contain the growth of their bacteria. If this actually works the team has not had a chance to test yet, since they have only created the anti-holin construct so far, while the holin construct is still being constructed.<strong></strong></p> |
| + | <p>The way the described system would work in the future would be to create a bacterial seedcoat for the plant seeds.</p> |
| + | <p>On top of this the team also did various outreach projects, like a radioplay and the radio iGEM show.</p> |
| + | <p>ICL’s achievements list is so long that I can not list it here. The most important part is probably that they submitted 6 novel biobricks and fulfilled almost all their goals they set out to achieve.</p> |
| + | <p> </p> |
| + | <div style="width:100%; height:1px; background-color:#6f6f6f; margin-bottom:3px;"></div></div></div> |
| + | </div> |
| + | |
| + | |
| + | <div class="post-663 post type-post status-publish format-standard hentry category-2011 category-europe-regionals category-igem tag-copenhagen tag-cyperman tag-fungi tag-fungicide tag-oxime-bombs"> |
| + | <span class="postlabel"><a href="http://igemwatch.net/?p=663"><span>01</span>Oct</a></span> |
| + | |
| + | <h2 class="post-title"><a href="http://igemwatch.net/?p=663">Copenhagen</a></h2> |
| + | <p class="info"> |
| + | <span class="catinfo">Filed in <a href="http://igemwatch.net/?cat=15" title="View all posts in 2011" rel="category">2011</a> | <a href="http://igemwatch.net/?cat=72" title="View all posts in Europe Regionals" rel="category">Europe Regionals</a> | <a href="http://igemwatch.net/?cat=7" title="View all posts in iGEM" rel="category">iGEM</a></span> |
| + | <span class="cmtinfo"><a href="http://igemwatch.net/?p=663#respond" title="Comment on Copenhagen">Leave a comment</a> | <a class="post-edit-link" href="http://igemwatch.net/wp-admin/post.php?post=663&action=edit" title="Edit Post"> Edit</a></span> |
| + | |
| + | </p> |
| + | <div class="entry"><p>Copenhagen is a rookie team, composed of 7 students, from 3 different lines of study. They’ve been collaborating with DTU-2 over the summer. Their project is called Cyperman.</p> |
| + | <p>Through the use of aromatic aminoacids, the cyperman creates oxime bombs, that are toxic to fungi. Applications for the cyperman include woodprotection and plant protection. Usually fungicides for wood protection is produced by chemical synthesis. The cyperman should produce oxime bombs cheaper and cleaner. Alternatively the cyperman could be sprayed directly on to the woodwork. Plants could produce oxime bombs in response to a specific signal from a inviading fungus, maybe in a tissue specific way, increasing expression in leafs.</p> |
| + | <p>The cytochrome P450, CYP79, is the key part for this team, when seperated from the normal metabolome it will produce oximes from aromatic aminoacids. Oximes kill fungi by inducing mitochondrial dysfunction leading to cell death.</p> |
| + | <p>The team ran into troubles using the standard assembly model, by using the new “Plug’n'play” standard proposed by DTU-Denmark-2 this year they we’re able to finish their construct.</p> |
| + | |
| + | <p>To characterise their construct the team used Thin layer chromatography, from the results of this analysis they believe they’ve had succes in coaxing their Coli’s to produce Oximes.</p> |
| + | <p>In conclusion, the team managed to create a construct for producing oximes and cloning the construct into E. Coli.</p> |
| + | <p> </p> |
| + | <p>Q: Please elaborate on problems with the standard assembly.</p> |
| + | <p>A: Basically problems in all areas, the DTU method was much easier and had no need to reduce illegal restriction sites.</p> |
| + | <p> </p> |
| + | <p>Q: Regarding the ethical forum, could you distill some points from there</p> |
| + | <p>A: A lot of science-students feel that life and machines are more alike than students from other areas of research.</p> |
| + | <p> </p> |
| + | |
| + | <p>Q: Could you say more about how considerations for human practice affected your project</p> |
| + | <p>A: At first we considered spraying our bacteria all over farms, but after finding out we might harm beneficial fungi we decided to put our construct under inducible promotion and introduced considerations for tissue-specific expression.</p> |
| + | </div> |
| + | |
| + | |
| + | <div class="post-650 post type-post status-publish format-standard hentry category-2011 category-europe-regionals category-igem tag-denmark tag-dtu tag-gene-silencing"> |
| + | <span class="postlabel"><a href="http://igemwatch.net/?p=650"><span>01</span>Oct</a></span> |
| + | <h2 class="post-title"><a href="http://igemwatch.net/?p=650">DTU Denmark: The Universal Tool For Gene Silencing</a></h2> |
| + | <p class="info"> |
| + | <span class="catinfo">Filed in <a href="http://igemwatch.net/?cat=15" title="View all posts in 2011" rel="category">2011</a> | <a href="http://igemwatch.net/?cat=72" title="View all posts in Europe Regionals" rel="category">Europe Regionals</a> | <a href="http://igemwatch.net/?cat=7" title="View all posts in iGEM" rel="category">iGEM</a></span> |
| + | |
| + | <span class="cmtinfo"><a href="http://igemwatch.net/?p=650#respond" title="Comment on DTU Denmark: The Universal Tool For Gene Silencing">Leave a comment</a> | <a class="post-edit-link" href="http://igemwatch.net/wp-admin/post.php?post=650&action=edit" title="Edit Post"> Edit</a></span> |
| + | </p> |
| + | <div class="entry"><p>Liveblogging from the DTU Denmark presentation</p> |
| + | <p> </p> |
| + | <p>DTU kicked off the Foundational Advance track. Starting of giving a introduction on the study and design of regulation as well as the limitations of the often used direct gene editing.</p> |
| + | <p>Basis of their project is the use of sRNA for post-transcriptional regulation. For this they choose a system inspired by chitobiose regulation in <em>E. coli</em>.</p> |
| + | |
| + | <p>The team is working on a system to target and repress any gene of interest (GOI). They were able to show that the system in general works fine, but unfortunately time was not enough to perform the experiments needed for the repression of GOIs.</p> |
| + | <p>Instead, a comprehensive and sophisticated model was presented. Also, I love heat maps. ;)</p> |
| + | <p>Also a rationally designed arabinose promoters library was created and characterized.</p> |
| + | <p>All in all, a quite interesting project even though there was not enough time for achieving all aims set. Probably most teams know this problem.</p> |
| + | <p>Now, for Q&A</p> |
| + | <p>The DTU is prepared. They have a additional slides prepared. One of these already answers the first question. Clever.</p> |
| + | <div id="liveblog-650"></div> |
| + | </div> |
| + | |
| + | |
| + | <div class="post-621 post type-post status-publish format-standard hentry category-2011 category-europe-regionals category-igem"> |
| + | <h1>Opening Ceremony</h1> |
| + | <div class="entry"><p>Here is our coverage from the opening session of the Europen iGEM regionals 2011:</p> |
| <p> </p> | | <p> </p> |
| <script type="text/javascript"> | | <script type="text/javascript"> |
- | /*<![CDATA[ */
| + | /*<![CDATA[ */ |
- | setTimeout(live_blogging_poll, 15000, "621")
| + | setTimeout(live_blogging_poll, 15000, "621") |
- | /*]]>*/
| + | /*]]>*/ |
- | </script><div id="liveblog-621"><div id="liveblog-entry-647"><p><strong>09.17</strong></p><p>If any of you want to come work at iGEM headquarters, pay attention, we’ll be putting out announcements for job opportunities at the iGEM foundation!</p>
| + | </script><div id="liveblog-621"><div id="liveblog-entry-647"><p><strong>09.17</strong></p><p>If any of you want to come work at iGEM headquarters, pay attention, we’ll be putting out announcements for job opportunities at the iGEM foundation!</p> |
| <div style="width:100%; height:1px; background-color:#6f6f6f; margin-bottom:3px;"></div></div><div id="liveblog-entry-645"><p><strong>09.16</strong></p><p>New branches: Entrepenurial divisiom, high school division, maybe a software tool division.</p> | | <div style="width:100%; height:1px; background-color:#6f6f6f; margin-bottom:3px;"></div></div><div id="liveblog-entry-645"><p><strong>09.16</strong></p><p>New branches: Entrepenurial divisiom, high school division, maybe a software tool division.</p> |
| | | |