Medical Board Certifications
Infectious Disease, American Board of Internal Medicine, 2018
Internal Medicine, American Board of Internal Medicine, 2015
UCLA STAR Program, 2019
UCLA School of Medicine, 2018
UCLA School of Medicine, 2014
UCLA School of Medicine, 2013
UCLA Molecular, Cellular and Developmental Biology, PhD, 2019
UC San Diego School of Medicine, MD, 2012
As an infectious diseases physician-scientist, my research is motivated by the mysteries I encounter in my medical practice. One such conundrum is how the same infection can cause highly variable outcomes in different patients. One of the factors that determines infection severity is the "context" in which the immune system is operating. This context can include age, sex, chronic diseases, and importantly, also the recent exposure history of an immune cell. When innate immune cells such as macrophages are exposed to cytokines and pathogen-associated molecules their signaling networks and epigenetic states get re-wired. This reprogramming affects their response to a subsequent infection and may also lead to post-infectious immune dysfunction. My research examines the molecular mechanisms of macrophage reprogramming and how this relates to the variable outcomes of human infections.
- Sequential conditioning-stimulation reveals distinct gene- and stimulus-specific effects of Type I and II IFN on human macrophage functions. Q Cheng, F Behzadi, S Sen, S Ohta, R Spreafico, R Teles, R Modlin, A Hoffmann. Scientific Reports, 2019 Mar 27. PMC6437173.
- Type I and type II interferon modulate NFκB signaling via distinct mechanisms. EL Mercado, S Mitchell, J Ho, K Fortmann, A Adelaja, QJ Cheng, G Ghosh, A Hoffmann. Frontiers in Immunology, 2019 Jun 25. PMC6604663.
- High dose IFN-?? activates GAF to enhance expression of ISGF3 target genes in MLE12 epithelial cells. K Kishimoto, CL Wilder, J Buchanan, M Nguyen, C Okeke, A Hoffmann, QJ Cheng. 2020. Frontiers in Immunology 12:651254, DOI: 10.3389/fimmu.2021.651254
- NFκB dynamics determine the stimulus-specificity of epigenomic reprogramming in macrophages. QJ Cheng, S Ohta, KS Sheu, R Spreafico, A Adelaja, B Taylor, A Hoffmann. 2020. Science, in press. Pre-print at DOI: 10.1101/2020.02.18.954602
Link to Dr. Cheng's publcations >