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MissionResearch in the MCKINNEY LAB is focused on the mechanistic basis of Mycobacterium tuberculosis persistence in the context of host immunity and antimicrobial therapy. Our research covers four areas: COUNTER-IMMUNITY. Host immunity is usually sufficient to contain M. tuberculosis infection, but not to eradicate infection. We seek to identify the mechanisms that M. tuberculosis uses to evade or counter the impact of the host immune response. IN VIVO METABOLISM. In recent years, central metabolism has emerged as an attractive target for antimicrobial drug discovery. We seek to identify the catabolic and anaplerotic pathways that are required for M. tuberculosis growth and persistence during infection of the mammalian host. ANTIBIOTIC TOLERANCE. Tuberculosis is notoriously refractory to antimicrobial therapy. We seek to understand the mechanistic basis of M. tuberculosis persistence in the antibiotic-treated host, and the epigenetic control of cell-to-cell variation in antibiotic sensitivity. CELL CYCLE DYNAMICS. M. tuberculosis is also notorious for its unusually slow intrinsic growth rate in vitro and in vivo (the minimum population doubling time is about 20 hours in either environment). We seek to understand why M. tuberculosis grows so slowly and to identify the physiologic adaptations that are required for slow growth. Our experimental approaches include molecular genetics, tissue culture and animal infection models, computational modeling, mass spectrometry, microfluidics, and time-lapse fluorescence microscopy.
BiographyProfessor John McKinney received his Ph.D. from The Rockefeller University (New York, NY) in 1994 for studies on cell cycle regulation in Saccharomyces cerevisiae in the laboratory of Fred Cross. From 1995 to 1998, he was a postdoctoral fellow in the laboratory of William Jacobs at the Albert Einstein College of Medicine (Bronx, NY), where he studied mechanisms of persistence in Mycobacterium tuberculosis. In 1999, he returned to Rockefeller University to establish his own laboratory as an Assistant (1999-2004) and then Associate (2004-2007) Professor. In July 2007, the lab relocated to the Global Health Institute in the School of Life Sciences at the École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland, where McKinney is Professor and Head of the Laboratory of Microbiology and Microsystems (LMIC). Our research focuses on understanding the mechanistic basis of bacterial persistence in the context of host immunity and antimicrobial therapy, using M. tuberculosis as a "model" system.
FUNDINGThe McKinney lab gratefully acknowledges core support from the EPFL and research grants from the Swiss National Science Foundation, the European Commission Seventh Framework Program, the Innovative Medicines Initiative, and SystemsX.ch.
The Rockefeller University
Enseignement & Phd
Life Sciences Engineering