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| - | <a href="project.html" target="_parent">Project Venusian</a> · | + | <a |
| - | <a href="m1.html" target="_parent">Modeling</a> · | + | href="https://2012.igem.org/Team:NYMU-Taipei/ymiproject.html" target="_parent">Project Venusian</a> · |
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| - | <p>Welcome to our Campus !</p> | + | <p>Our Ultimate Goal !</p> |
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| - | <a href="#"><img src="images/slideshow/01.jpg" alt="01" title="The Front Gate that you guys just entered." /></a>
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| | <p> </p> | | <p> </p> |
| - | <p>Founded in 1974, National Yang-Ming University, formerly known as National Yang-Ming College of Medicine, has been adhering to the school motto of "benevolent mind and art, putting knowledge into practice" while training excellent humane doctors to provide service by solving medical problems in remote and rural areas. </p> | + | |
| - | <p> Our success is no coincidence but an attribute of excellent allocation of limited resources and the devoted efforts of both the faculty and students, all of which were needed to achieve "brilliant results in teaching and research" within such a short period of time. Due to our research atmosphere, academic accomplishments, innovative knowledge and cultivation of talent, we have well demonstrated our standing as a top university. <br />
| + | <p> |
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| | + | Due to rapid population growth, the environmental problems are worsened and even threatening to ruin our lovely Earth. Yet somehow, human being will be able to come up with the solution to such problem, just like the famous quote from Jurassic Park: “Life finds way”. In the 16th century, when every street in Europe is overfilled with people, a remarkable era called Great Navigations started, in which people migrated and colonized to the new world. And now, our project aims to do something familiar. |
| | + | We offer a novel approach to solve the environmental crisis. Our project can not only reduce pollutants but also adapt human being to the contaminated environment. That is, endue mankind with special ability by artificial endosymbiosis. The simple conceptual principle is, an unicellular cyanobacteria with novel sulfur and nitrogen metabolizing bio-bricks could automatically invade into human by a invasin system similar to Listeria. As the cell was equipped with engineered cyanobacteria, we not only reconstruct the primal processes of endosymbiosis but also pioneer a new way to engineer organisms. Eventually, a new human species will be created. |
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| | <div class="section_box" align="justify"> | | <div class="section_box" align="justify"> |
| - | <div class="subtitle"><strong>One Team One Goal</strong></div> | + | <div class="subtitle"><strong>Welcome to our Campus</strong></div> |
| - | After devoting ourselves to amazing ideas for half of the summer vacation, it is high time for us to share the inspiration, excitement and initial results. On August 15th, let's huddle, dear iGEMers. Let dreams from synthetic biology tie all of us together. <br />
| + | Founded in 1974, National Yang-Ming University, formerly known as National Yang-Ming College of Medicine, has been adhering to the school motto of "benevolent mind and art, putting knowledge into practice" while training excellent humane doctors to provide service by solving medical problems in remote and rural areas.<br /> |
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| - | {|align="justify"
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| - | == <font color=red>Our iGEM Project:</font> ==
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| - | [[File:Nymu_igem_logo_2012.png|187px]]
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| - | '''* <font color=blue>Nitrogen Metabolism</font>'''
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| - | * With an eye to combat the environmental issues related to nitrogen oxides, we have designed circuits that can produce nitrogen oxides reductases and transcriptional regulators into our organisms so that harmful nitrogen oxides can be reduced to nitrogen. Combined with the sulfur metabolism pathway and Calvin cycle that are inherent in cyanobacteria, we provide an eco-friendly, multi-function solution to the air pollution problem.
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| - | * This is a promising project with huge commercialized potential since the mass production of bioreactors full of our organisms is foreseeable. What is more interesting, with the help of division inhibitor, gene for invasion, we can install our designation into human cells as artificial organelles and grant human being the ability to survive in extreme environments such as Venus without wearing bulky space suits.
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| - | '''* <font color=blue>Sulfide Metabolism</font>'''
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| - | * We all know that sulfide dioxides are one of the pollutants in urban area globally. In addition, sulfide compounds also exist on Venus. Therefore, we first think about how to reduce the sulfide dioxides in the atmosphere on earth; then we can move our project further on Venus.
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| - | * Our plan is to develop a system which can reduce the SO2 into H2S using the genes in microorganisms like sulfate reducing bacteria, such as Desulfovibrio desulfuricans. After we acquire H2S, we may use bacteria such as Oscillatoria limnetica, Rhodobacter capsulatus, and Cyanobacteria PCC7002 which contain Sulfide-quinone reductase(SQR).By using SQR, we can then use H2S as the reducing energy and can get carbohydrates such as glucose, and can provide them as the energy for creatures to survive.
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| - | '''* <font color=blue>Symbiosis</font>'''
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| - | * Every year, iGEMers create plenty of bioparts. They code for peptides, proteins or composite parts for all kinds of functions. However, they are just DNA sequences. But what if we create parts at the scale of organelles? With this approach, we can implant any cells into the host depending on what kinds of functions we hope to see in it.
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| - | * Comparing with transforming cells using merely simple DNA sequence, implanting new organelles can bring more complicated functions and more precise controlling systems. We can dream about making eukaryote to fix nitrogen, reduced sulfite, or even making animals to photosynthesize! Or we can create organisms that can live in other planets!
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| - | <!--- The Mission, Experiments --->
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| - | <!--- {| style="color:#1b2c8a;background-color:#0c6;" cellpadding="3" cellspacing="1" border="1" bordercolor="#fff" width="62%" align="center"
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| - | !align="center"|[[Team:NYMU-Taipei|Home]]
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| - | !align="center"|[[Team:NYMU-Taipei/Team|Team]]
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| - | !align="center"|[https://igem.org/Team.cgi?year=2012&team_name=NYMU-Taipei Official Team Profile]
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| - | !align="center"|[[Team:NYMU-Taipei/Project|Project]]
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| - | !align="center"|[[Team:NYMU-Taipei/Parts|Parts Submitted to the Registry]]
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| - | !align="center"|[[Team:NYMU-Taipei/Modeling|Modeling]]
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| - | !align="center"|[[Team:NYMU-Taipei/Notebook|Notebook]]
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| - | !align="center"|[[Team:NYMU-Taipei/Safety|Safety]]
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| - | !align="center"|[[Team:NYMU-Taipei/Attributions|Attributions]]
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| - | |}--->
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| - | == <font color=red>Responses to Safety Questions</font> ==
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| - | ====1. Would any of your project ideas raise safety issues in terms of:====
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| - | * researcher safety,
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| - | * public safety, or
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| - | * environmental safety
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| - | * <font color=blue>Our Response:</font>
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| - | ** Our projects are mainly associated with pollutent reduction and endosymbiosis. For discussing the safety issues connected with our project, this assessment will start by listing the organisms and biobricks we used and developed in compliance with the guideline of iGEM Safety page correspondingly.
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| - | *** The following organisms are species which we derived our biobricks from or practiced transformation and cloning. This list includes ''Desulfovibrio desulfuricans'', ''Pseudomonas aeruginosa'' PAO1, ''Dictyostelium discoideum'', ''Escherichia coli'', ''Synechococcus elongatus'' PCC7942, ''Synechocystis'' sp. PCC6803 and ''Synechococcus'' sp. PCC7002. None of the listed organisms is a pathogen. As for the biobricks we used, most of them are bioparts from previous iGEM teams. These parts from iGEM kits are considered safe.
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| - | ** Since our project is related to contaminant water, exhaust air and heavy metal in environments, we need to thoroughly examine every process of the experiments we conduct. Under the strict guidance of our faculty instructors, all transmissions and operations of biological materials meet the relevant laws and regulations. As a result of the heartily suggestion and assistance of our laboratory fellows, we developed a series of experiments to demonstrate our project without violating any national regulations or university guideline requirements. The details of our experiments are available on the Experiment page.
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| - | ====2. Do any of the new BioBrick parts (or devices) that you made this year raise safety issues? If yes, ====
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| - | * Did you document these issues in the Registry?
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| - | * How did you manage to handle the safety issue?
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| - | * How could other teams learn from your experience?
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| - | * <font color=blue>Our Response:</font>
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| - | ** There are not any new BioBricks we made raise safety issue. They are mainly reductases from organisms mentioned above. Nitrate, nitrite, nitrous oxides reductase and derived from ''Pseudomonas aeruginosa'' PAO1. Thanks to Prof. Hwan-You Chang from National Tsing Hua University, we operated the transferring and cloning on purified genomic DNA provided from his lab. Therefore, we did not need to cultivate ''P. aeruginosa'' PAO1. The biobricks related to nitrogen reductase are ultimately transfected onto the genome of ''Synechococcus'' sp. PCC7942, and all of the according procedures followed the strict regulations of BSL 1 (Basic Biosafety Level 1). The same operation standard (BSL 1) is also applied to our experiments of the sulfate reducing enzymes derived from ''P. aeruginosa'' PAO1 as well. In addition, the sqr (sulfide quinone reductase) from ''Synechococcus'' sp. 7002, and like other biobricks mentioned above, is expressed in ''Synechococcus'' PCC7942 following the same safety requirements too.
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| - | ** The other new biobricks we made includes zinTp, the promoter whose activity is induced by cadmium ion; and mnt protein, the ion transporter that pumps cadmium ions inside bacteria. These genes have no harm to either human being or the environment.
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| - | ** Since there is little safety concern according to the properties of our new biobricks, we deduced that the new biobricks we submitted are safe and harmless.
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| - | ====3. Is there a local biosafety group, committee, or review board at your institution? ====
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| - | * If yes, what does your local biosafety group think about your project?
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| - | * If no, which specific biosafety rules or guidelines do you have to consider in your country?
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| - | * <font color=blue>Our Response:</font>
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| - | ** The Center of Environmental Protection and Safety and Health on our campus is in charge of promoting and managing the safety and health issue in National Yang-Ming University. The following links will direct you to the website which contains regulation guidelines of biological safety issues. [http://ces-e.web.ym.edu.tw/front/bin/ptlist.phtml?Category=5 The Center of Environmental Protection and Safety and Health - Biological Safety]. All the experiments we do or conduct in our projects are following the rules listed in there.
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| - | ** Though most of our projects are considerably safe, one part of our projects involves in the manipulation of cadmium ions, which is restricted under the local regulations. With the help and advice of the Center of Environmental Protection and Safety and Health, we conducted our cadmium related experiments in accordance with the associated guidelines.
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| - | ====4. Do you have any other ideas how to deal with safety issues that could be useful for future iGEM competitions? How could parts, devices and systems be made even safer through biosafety engineering? ====
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| - | * <font color=blue>Our Response:</font>
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| - | ** One of our projects specifically deals with biosafety issues related to the environment. Our Soil Cleaner project is mainly about collecting Cadmium from the environment, containing several interesting designs to avoid gene flow and limit the leakage of artificial organisms into the environment. We took advantage of using previous biobricks to make sure the engineered ''E. coli'' can only live inside of ''Dictyostelium discoideum'', which avoids unwanted gene exchange between our engineered ''E. coli'' and other wild type bacteria.
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| - | ** By cloning LLO and invasin genes into the ''E. coli'' cells, the bacteria can get into the amoeba and live inside there. Invasin helps the bacterial cells to be endocytosed by the amoeba host. Then Listeriolysin O makes the bacterial cells escaped from phagosomes in the cytoplasm of the amoeba host.
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| - | ** In case that the ''E. coli'' cells get rid of amoeba, we designed a mechanism by using endolysin and holin to cause the death of bacterial cells. Endolysin is an enzyme that degrades the bacterial peptidoglycan cell wall, resulting in the lysis of the bacterial cells. Holins are small membrane proteins that let endolysin get to where it works. Anti-holin acts as anti-toxin by binding to holin, inhibiting it activity. We also used the regulation of a LuxR promoter, a promoter which will only express downstream genes when the protein LuxR and signal molecule AHL produced by protein LuxI, are both exist inside the bacteria, in this design. Engineering continual expression endolysin, holin and LuxR; and LuxR promoter as the promoter for anti-holin gene in ''E. coli'', the bacteria will not survive without AHL. We clone the LuxI gene to the plasmid in ''Dictyostelium discoideum'', making the amoeba to produce AHL. By this way, when ''E. coli'' stay in the amoeba, the AHL will be sensed by LuxR, maintaining the transcription of anti-holin gene, preventing the ''E. coli'' from lysis. But when the ''E. coli'' cells leave the amoeba, there will be no AHL so no anti-holin will be produced and then the ''E. coli'' will be killed by endolysin.
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| - | ** As for constraining the Soil Cleaner in the contaminated area, a death switch is designed to restrict amoeba from migrating into nature. This kill-switch has two man-made operons. The first one includes zinTp promoter. This promoter activity is induce by cadmium ion; and its constructive gene is lacI. The other one includes BBa_R0010 promoter. This promoter whose activity is inhibited by the protein lacI; and the constructive genes are aifA and HlyA. AifA is a protein that causes the apoptosis of ''Dictyostelium discoideum'' cells. HlyA is a tag that sticks after the target protein. With this tag, ''E. coli'' will secrete the target protein. When cadmium ions exist, zinTp works and lacI is generated, so the expression of both aifA and HlyA is repressed. If there is no cadmium ions, BBa_R0010 will activate the expression of aifA and HlyA, so the protein aifA will be secreted right into the cytoplasm of amoeba, causing amoeba apoptosis.
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| - | ** Moreover, instead of using traditional endogenous plasmids to transform cyanobacteria, we cloned our biobricks into vectors that will stably recombine with homologous genomic DNA alternatively. Thus, horizontal gene transfer is avoided and the security and safety of our project is greatly improved.
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