Sang Hoon Rhee, PhD

Adjunct Associate Professor, Division of Digestive Diseases, David Geffen School of Medicine at UCLA
Photo of Sang Hoon Rhee, PhD

Biographical Info

Dr. Rhee’s research focuses on studying roles of host-microbial interaction in the gastrointestinal tract. Specifically, the lab has been investigating the function of Toll-like receptors (TLRs) which is a family of pattern recognition receptor recognizing microbial products to elicit inflammatory and innate immune responses. Recently, Dr. Rhee demonstrated that TLR5 is associated with the development and progress of inflammatory bowel diseases. Moreover, Dr. Rhee’s studies also showed that TLR5 plays an important role to elicit innate immunity to regulate anti-tumor activity. Studies to be presented will include a role of TLR5 in regulating colon cancer and a potential mechanism to modulate anti-tumor activity against colonic tumor. This research program has a record of continuous support from the NIH/NIDDK, Crohn’s and Colitis Foundation of America, Flight Attendant Medical Research Institute at both UCLA and Harvard Medical School.

Relevant Recent Publications

  1. Choi YJ., Im E., Pothoulakis C., and Rhee SH. TRIF modulates TLR5-dependent responses by inducing proteolytic degradation of TLR5. (2010) The Journal of Biological Chemistry 285: 21382-21390. PMCID: PMC2898416.
  2. Choi YJ., Im E., Chung HK., Pothoulakis C., and Rhee SH. TRIF mediates Toll-like receptor 5-induced signaling in intestinal epithelial cells (2010) The Journal of Biological Chemistry 285:37570-37578. PMCID: PMC2988362.
  3. Im E., Riegler FM., Pothoulakis C., and Rhee SH. Elevated lipopolysaccharide in the colon evokes intestinal inflammation, aggravated in immune modulator-impaired mice. (2012) The American Journal of Physiology – Gastrointestinal and Liver Physiology 303(4):G490-7. PMCID: PMC3423140. (Selected as an “Editor’s Pick” from the journal).
  4. Im E., Jung J., and Rhee SH.., Toll-like receptor 5 engagement induces IL-17C expression in intestinal epithelial cells. (2012) Journal of Interferon & Cytokine Research 32:583-591. PMCID: PMC3514012.
  5. Choi YJ., Jung J., Chung HK., Im E., and Rhee SH., PTEN regulates TLR5-induced intestinal inflammation by controlling Mal/TIRAP recruitment. (2013) The FASEB Journal 27:243-254. PMCID: PMC3528317
  6. Im E., Jung J, Pothoulakis C., and Rhee SH. Disruption of Pten speeds onset and increases severity of spontaneous colitis in Il10–/– mice. (2014) Gastroenterology 147:667-679. PMCID: PMC4143453.
Categories: Associate Member, Faculty, Gastrointestinal Disorders

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