Portolio of David Elkan-Gonzalez
On my first day at BAMM Labs I met my lab partner and was handed a paper by my boss. The paper was on the capture of cells on a glass slide. The two of us were told to develop a novel procedure to selectively capture and release blood cells on a thermoresponsive surface. BAMM Labs focuses on micro-fluidic devices, and the idea of this project was to create a small, cheap, and portable device that could be used to easily diagnose various bloodborne ailments in limited resource settings. I had recieved an internship here as part of my gap-year experience between high school and college, and my partner and I set about our task with great enthusiam. While we would spend much of the next 6 months working very closely with each other, my partner and I only met with our manager about once a week.
We didn't have a wealth of lab experience and lacked much of the background knowledge needed, so we immediately began researching similar procedures. I had a lot of fun learning how to use the laser cutter, and quickly became the most most silled person in the lab at operating the korean software. We recieved very little guidance and for the most part developed this process through our own research and through repeated experiments.
Despite many challenges after 6 long months we succeeded in developing the procedure. Using a thermoresponsive coating we trapped anitbodies in laser cut mircofluidic channels. By flowing blood through the channel target cells are captured by the antibodies. Once the cells have been captured we flow through marker antibodies which latch onto any captured cells. These anitbodies are modified to be more easily detected

This diagram gives a summary of the heat-assisted capture release process.

This procedure uses a thermo-responsive surface to capture and release antibodies.
Position: Research Intern
When: December 2010 - June 2011
Key Skills: Biology, Microscopes, Matlab, Research
BAMM Harvard Research Labs
by microscopes. By controlling the temperature of the thermo-responsive surface, we can trigger the release of the trapped antibodies and flush them into a collection vessel. The collected fluid can be analyzed for the marker antibodies. This process can be used for detecting and counting the presence of just about any bloodbourne cells that an antibody is available for. Our hard work resulted in a paper publication that can be found here. While our paper targetted cd4 cells (aka white blood cells), we postulate that is procedure should be easily adapted most bloodbourne cells for which an appropriate antibody is available.