cbc scholars bios
Gregory Tietjen
CBC Scholar: Class of 2012
PhD Candidate, Program in Biophysical Sciences, UChicago;
Joint Advisors: Ka Yee Lee (Department of Chemistry) and Erin Adams (Department of Biochemistry and Molecular Biology)
Email:
LEE LAB WEBPAGE
ADAMS LAB WEBPAGE
RESEARCH INTERESTS:
The immune system recognizes a vast array of chemical signatures as antigens although historically most research has focused more exclusively on protein/ protein recognition. More recently it has been appreciated that lipids can also be a potent stimulus for an immune response, both in the context of lipid- presenting molecules (CD1), and as a component of the cell’s plasma membrane (phosphatidylserine receptors). I am studying the molecular mechanisms by which a family of 3 unique phosphatidylserine receptors (Tim family) can directly recognize “out of context” components of the lipid membrane and how this recognition process then stimulates an appropriate immune response. To elucidate the molecular specifics of how the Tims recognize immunogenic cellular membranes, I am utilizing a novel combination of X-ray Reflectometry and Molecular Dynamic Simulations. In addition to basic structural information, I am also endeavoring to determine both the strength and specificity of these interactions for each individual Tim family member with the goal of illuminating their individual roles in the immune response to phosphatidylserine exposure.
PUBLICATIONS:
Tietjen GT, Kong Y, Parthasarathy R. An efficient method for the creation of tunable optical line traps via control of gradient and scattering forces. Opt Express. 2008 Jul 7;16(14):10341-8. (PubMed)
AWARDS:
- Judge, Chicago Public Schools Student Science Fair, March 2012
- Chicago Biomedical Consortium Scholarship, 2012
- 2009 and 2010 NSF Graduate Research Fellowship Honorable Mention
ACTIVITIES:
- Program in Biophysical Sciences Peer Mentor
- Summer 2011 - Summerlink Research Program Mentor
- Summer 2010 - Incremental Mentoring Program Dreyfus Foundation Chemistry Outreach Grant: Program developer and mentor
- Winter 2009 - Summer 2010 LMSA/MRSEC Research Program Mentor
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