Team:Aberdeen Scotland

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<ul class="sidebar">
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<li class="curr"><a class="curr" href="https://2014.igem.org/Team:Aberdeen_Scotland">Overview</a></li>
<li class="curr"><a class="curr" href="https://2014.igem.org/Team:Aberdeen_Scotland">Overview</a></li>
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<h1>Aberdeen iGEM Team 2014</h1>
<h1>Aberdeen iGEM Team 2014</h1>
<h3>Wake up to the Sleeping Sickness</h3>
<h3>Wake up to the Sleeping Sickness</h3>
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<br>
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<img src="https://static.igem.org/mediawiki/2014/a/ae/Igem_logo_exp.png">
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<div class="main_content">
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<h3>Human African Trypanosomiasis – a Neglected Tropical Disease</h3>
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<h4>The team was awarded a Gold medal and two special prizes:</h4>
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<ul>
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<ul>
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<li><b>Best Health & Medicine Project</b> - Winner of Health & Medicine Track</li>
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<li><b>Best Innovation in Measurement</b> - Special Prize for unique assay design</li>
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</ul>
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</ul>
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<img src="https://static.igem.org/mediawiki/2014/d/d0/Awards_1.jpg">
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<h4>*Ana and Konstantin receiving our two special prizes</h4>
<h3>Human African Trypanosomiasis – a Neglected Tropical Disease</h3>
<h3>Human African Trypanosomiasis – a Neglected Tropical Disease</h3>
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<p>Trypanosoma brucei gambiense, the causative agent of Human African Trypanosomiasis (HAT) (commonly known as African Sleeping Sickness), infects 30,000 people worldwide, with 60 million at disease risk. Unrecognised, this disease is fatal, but accurate diagnosis, relying on detection of patient serum antibodies against two different trypanosomal antigens, Variable Surface Glycoprotein LiTat 1.3 and Variable Surface Glycoprotein LiTat 1.5, allows successful treatment.</p>
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<p>Trypanosoma brucei gambiense, the causative agent of Human African Trypanosomiasis (HAT) (commonly known as African Sleeping Sickness), infects 30,000 people
 +
worldwide, with 60 million at disease risk. Unrecognised, this disease is fatal, but accurate diagnosis, relying on detection of patient serum antibodies against two
 +
different trypanosomal antigens, Variable Surface Glycoprotein LiTat 1.3 and Variable Surface Glycoprotein LiTat 1.5, allows successful treatment.</p>
<img src="https://static.igem.org/mediawiki/2014/f/f0/Parasite.png">
<img src="https://static.igem.org/mediawiki/2014/f/f0/Parasite.png">
<h3>Our project and achievements</h3>
<h3>Our project and achievements</h3>
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<p>We engineered autotransporters Antigen43 (Ag43) and Ice-Nucleation protein (INP) to successfully express surface epitopes in E.coli, that mimic the two different trypanosomal antigens. Therefore, we created standardised and user-friendly Ag43 and INP BioBricks ready for peptides of choice to be cloned in. Two E.coli strains were generated, each expressing a distinct surface epitope and either a quorum sensing sender or receiver module respectively. We delivered a proof-of-principle demonstration of our project, by showing that the quorum-based system is capable of detecting cell surface Ag43-FLAG ‘Receiver’ E.coli in an anti-FLAG bead pull-down. These ‘Receivers’ co-cultured with AHL-synthesising ‘Senders’ produced a strong –FLAG-tag dependent, AHL-inducible GFP response. This system if applied in a real-life scenario could effectively diagnose a neglected tropical disease such as Trypanosomiasis, using patient serum-derived antibodies, with minimal facilities.</p>
+
<p>We engineered autotransporters Antigen43 (Ag43) and Ice-Nucleation protein (INP) to successfully express surface epitopes in <i>E.coli</i>, that mimic the two different
 +
trypanosomal antigens. Therefore, we created standardised and user-friendly Ag43 and INP BioBricks ready for peptides of choice to be cloned in. Two <i>E.coli</i> strains
 +
were generated, each expressing a distinct surface epitope and either a quorum sensing sender or receiver module respectively. We delivered a proof-of-principle
 +
demonstration of our project, by showing that the quorum-based system is capable of detecting cell surface Ag43-FLAG ‘Receiver’ <i>E.coli</i> in an anti-FLAG bead pull-
 +
down. These ‘Receivers’ co-cultured with AHL-synthesising ‘Senders’ produced a strong –FLAG-tag dependent, AHL-inducible GFP response. This system if applied in a
 +
real life scenario could effectively diagnose a neglected tropical disease such as Trypanosomiasis, using patient serum-derived antibodies, with minimal facilities.
 +
</p>
 +
<img src="https://static.igem.org/mediawiki/2014/e/e2/Diag.png"><br><br>
<h3>The user-friendly, portable, inexpensive GFP detection device</h3>
<h3>The user-friendly, portable, inexpensive GFP detection device</h3>
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<p>We constructed a cheap, Raspberry Pi computer-controlled fluorimeter suitable for developing countries, showing it could detect QS fluorescence output. The detection device costs around $100 and could replace heavy and expensive microscopes, to make the detection system affordable to remote populations in Africa.</p>
+
<p>We constructed a cheap, Raspberry Pi computer-controlled fluorimeter suitable for developing countries, showing it could detect QS fluorescence output. The
 +
detection device costs around $100 and could replace heavy and expensive microscopes, to make the detection system affordable to remote populations in Africa.</p><br>
 +
<img src="https://static.igem.org/mediawiki/2014/7/71/GFP_detector.png"><br><br>
<h3>Novel applications</h3>
<h3>Novel applications</h3>
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<p>This novel application to diagnose patient exposure to tropical pathogens integrates antigen display and quorum sensing to implement AND logic sensing. It facilitates cheap, simple diagnosis of neglected tropical diseases such as HAT. Future diagnosis kits can be constructed and modularized using the cheap and self-replenishing E. coli based detection system we created as a platform for displaying two different mimotopes. Mimotopes are shortened versions of real epitopes identified for a panel of diseases, all of which are currently stored in a universal database, available to everyone and known as MimoDB [http://immunet.cn/mimodb]. Moreover, it was recently shown that upon heat-treatment of Ag43 autotransporter-foreign peptide complex at 60°C, a chimeric form of the expressed foreign protein can be isolated and remain fully active. The chimeric protein was then used to induce an immune response and to develop a novel vaccine for cancer therapy ((Huang et al., 2014)). Therefore, we suggest that further research can be done on Ag43-trypanosomal mimotope/ other mimotope complexes for a potential first vaccine for HAT/ other diseases.</p>
+
<p>This novel application to diagnose patient exposure to tropical pathogens integrates antigen display and quorum sensing to implement AND logic sensing. It
-
<p><b>Reference:</b> Huang, F., Li, L., Liu, Q., Li, Y., Bai, R., Huang, Y., Zhao, H., Guo, J., Zhou, S., Wang, H. and others, (2014). Bacterial surface display of endoglin by antigen 43 induces antitumor effectiveness via bypassing immunotolerance and inhibition of angiogenesis. International Journal of Cancer, 134(8), pp.1981--1990.</p>
+
facilitates cheap, simple diagnosis of neglected tropical diseases such as HAT. Future diagnosis kits can be constructed and modularized using the cheap and self-
 +
replenishing <i>E. coli</i> based detection system we created as a platform for displaying two different mimotopes. Mimotopes are shortened versions of real epitopes
 +
identified for a panel of diseases, all of which are currently stored in a universal database, available to everyone and known as MimoDB [http://immunet.cn/mimodb].
 +
Moreover, it was recently shown that upon heat-treatment of Ag43 autotransporter-foreign peptide complex at 60°C, a chimeric form of the expressed foreign protein
 +
can be isolated and remain fully active. The chimeric protein was then used to induce an immune response and to develop a novel vaccine for cancer therapy (Huang et
 +
al., 2014). Therefore, we suggest that further research can be done on Ag43-trypanosomal mimotope/ other mimotope complexes for a potential first vaccine for HAT/
 +
other diseases.</p>
 +
<p><b>Reference:</b> Huang, F., Li, L., Liu, Q., Li, Y., Bai, R., Huang, Y., Zhao, H., Guo, J., Zhou, S., Wang, H. and others, (2014). Bacterial surface display of
 +
endoglin by antigen 43 induces antitumor effectiveness via bypassing immunotolerance and inhibition of angiogenesis. International Journal of Cancer, 134(8),
 +
pp.1981--1990.</p>
</div>
</div>

Latest revision as of 14:27, 21 January 2015

Team:Aberdeen Scotland - 2014.ogem.org



Aberdeen iGEM Team 2014

Wake up to the Sleeping Sickness




Human African Trypanosomiasis – a Neglected Tropical Disease

The team was awarded a Gold medal and two special prizes:

    • Best Health & Medicine Project - Winner of Health & Medicine Track
    • Best Innovation in Measurement - Special Prize for unique assay design

*Ana and Konstantin receiving our two special prizes

Human African Trypanosomiasis – a Neglected Tropical Disease

Trypanosoma brucei gambiense, the causative agent of Human African Trypanosomiasis (HAT) (commonly known as African Sleeping Sickness), infects 30,000 people worldwide, with 60 million at disease risk. Unrecognised, this disease is fatal, but accurate diagnosis, relying on detection of patient serum antibodies against two different trypanosomal antigens, Variable Surface Glycoprotein LiTat 1.3 and Variable Surface Glycoprotein LiTat 1.5, allows successful treatment.

Our project and achievements

We engineered autotransporters Antigen43 (Ag43) and Ice-Nucleation protein (INP) to successfully express surface epitopes in E.coli, that mimic the two different trypanosomal antigens. Therefore, we created standardised and user-friendly Ag43 and INP BioBricks ready for peptides of choice to be cloned in. Two E.coli strains were generated, each expressing a distinct surface epitope and either a quorum sensing sender or receiver module respectively. We delivered a proof-of-principle demonstration of our project, by showing that the quorum-based system is capable of detecting cell surface Ag43-FLAG ‘Receiver’ E.coli in an anti-FLAG bead pull- down. These ‘Receivers’ co-cultured with AHL-synthesising ‘Senders’ produced a strong –FLAG-tag dependent, AHL-inducible GFP response. This system if applied in a real life scenario could effectively diagnose a neglected tropical disease such as Trypanosomiasis, using patient serum-derived antibodies, with minimal facilities.



The user-friendly, portable, inexpensive GFP detection device

We constructed a cheap, Raspberry Pi computer-controlled fluorimeter suitable for developing countries, showing it could detect QS fluorescence output. The detection device costs around $100 and could replace heavy and expensive microscopes, to make the detection system affordable to remote populations in Africa.




Novel applications

This novel application to diagnose patient exposure to tropical pathogens integrates antigen display and quorum sensing to implement AND logic sensing. It facilitates cheap, simple diagnosis of neglected tropical diseases such as HAT. Future diagnosis kits can be constructed and modularized using the cheap and self- replenishing E. coli based detection system we created as a platform for displaying two different mimotopes. Mimotopes are shortened versions of real epitopes identified for a panel of diseases, all of which are currently stored in a universal database, available to everyone and known as MimoDB [http://immunet.cn/mimodb]. Moreover, it was recently shown that upon heat-treatment of Ag43 autotransporter-foreign peptide complex at 60°C, a chimeric form of the expressed foreign protein can be isolated and remain fully active. The chimeric protein was then used to induce an immune response and to develop a novel vaccine for cancer therapy (Huang et al., 2014). Therefore, we suggest that further research can be done on Ag43-trypanosomal mimotope/ other mimotope complexes for a potential first vaccine for HAT/ other diseases.

Reference: Huang, F., Li, L., Liu, Q., Li, Y., Bai, R., Huang, Y., Zhao, H., Guo, J., Zhou, S., Wang, H. and others, (2014). Bacterial surface display of endoglin by antigen 43 induces antitumor effectiveness via bypassing immunotolerance and inhibition of angiogenesis. International Journal of Cancer, 134(8), pp.1981--1990.

You can find our official iGEM Registry Page here.