Difference between revisions of "Team:Freiburg/Results"
m (vorschläge fine feeling (luisa)) |
|||
| Line 234: | Line 234: | ||
The measuring device we used in collaboration with the AG Roth (ZBSA) to detect antibody binding events is a really expensive machine, but the physics which it is based on is rather simple. To enable future iGEM teams to profit from this label-free detection method as we did, a cost-efficient and easy to rebuild variant of the device was developed (figure 2A). Figure 2B shows the binding of anti-GFP to GFP as it was established before, measured with our own device. | The measuring device we used in collaboration with the AG Roth (ZBSA) to detect antibody binding events is a really expensive machine, but the physics which it is based on is rather simple. To enable future iGEM teams to profit from this label-free detection method as we did, a cost-efficient and easy to rebuild variant of the device was developed (figure 2A). Figure 2B shows the binding of anti-GFP to GFP as it was established before, measured with our own device. | ||
<br> | <br> | ||
| − | Look here, to see how you can <a href="https://2015.igem.org/Team:Freiburg/Results/Own_Device">build your own device</a> for label-free detection of antibody binding on a protein microarray needing two lenses, a camera and a little bit of fine feeling (??). | + | Look here, to see how you can <a href="https://2015.igem.org/Team:Freiburg/Results/Own_Device">build your own device</a> for label-free detection of antibody binding on a protein microarray needing two lenses, a camera and a little bit of fine feeling (??) sensitivety/sensitiveness/finesse/sure instincts. |
</p> | </p> | ||
</div> | </div> | ||
Revision as of 10:17, 12 September 2015
Nicole: Hab ich es richtig verstanden, dass hier nur eure Highlights and Ergebnissen dargestellt werden sollen (mit verlinkung zu den anderen Ergebnissen)? Was haltet ihr von einer kurzen Einleitung... In the last months we (aimed to) developed a diagnostic tool which enables [...] We succeded to detect anti-tetanus antibodies in human serum, develop/generate our own cell-free mix...
mehr Formulierungen wie: we demonstrated..., we (successfully) tested, we achieved...
Detection of anti-Tetanus antibodies in human blood serum
We tested our DiaCHIP with blood serum to determine the tetanus vaccination (proof of tetanus antibodies)...
In den text eine bessere Reihenfolge rein bringen. Es wird vom blut gesprochen, dann Expression in E.coli und dann wieder Blut.
To test the DiaCHIP under real-life conditions, we wanted to analyze the blood serum of a vaccinated person for the presence of anti-Tetanus antibodies. Blood from the same person was taken before vaccination and served as negative control. The corresponding antigen was expressed in E. coli, purified by His tag based affinity purification and spotted on a specific Ni-NTA surface.
Applying the sample taken three weeks after vaccination to the DiaCHIP resulted in a significant signal at the antigen spot, whereas no signal was obtained with the sample assumed to be negative. But convince yourself of how great the DiaCHIP performed. The video on the right shows these measurements right next to each other in real-time.
Besides tetanus, some other antigens of immunological relevance were taken into account. See all the results we obtained in terms of diagnostics, including an approach for quantification of the measurements.
Detection of anti-GFP antibodies in rabbit serum using cell-free expressed GFP
To show that cell-free expressed proteins can be immobilized on the protein surface while maintaining their antibody binding properties, the expression mix was spotted on a specific Ni-NTA surface after GFP expression.
Serum of a rabbit immunized with GFP was applied to the DiaCHIP, which resulted in a strong signal at the referring spot evoked by antibody binding events (figure 1). Thus, His-tagged GFP was successfully expressed and immobilized on the surface, still enabling anti-GFP antibodies in a serum sample to bind.
Find out more about the preparation of the DiaCHIP by producing a protein microarray from a DNA template using cell-free expression.
Building our very own, low-cost DiaCHIP measuring device.
The measuring device we used in collaboration with the AG Roth (ZBSA) to detect antibody binding events is a really expensive machine, but the physics which it is based on is rather simple. To enable future iGEM teams to profit from this label-free detection method as we did, a cost-efficient and easy to rebuild variant of the device was developed (figure 2A). Figure 2B shows the binding of anti-GFP to GFP as it was established before, measured with our own device.
Look here, to see how you can build your own device for label-free detection of antibody binding on a protein microarray needing two lenses, a camera and a little bit of fine feeling (??) sensitivety/sensitiveness/finesse/sure instincts.
Click on one of the images to get further insight how we build up our DiaCHIP
