Xiaohui Zha profile picture

Contact Information

Xiaohui Zha, Ph.D.
613-737-8899 x73268
Xzha@ohri.ca

Fax: 613-737-8803

ORCID logo https://orcid.org/0000-0003-2873-3073

Xiaohui Zha

Senior Scientist, Chronic Disease Program
Ottawa Hospital Research Institute
Professor, Department of Medicine & Department of Biochemistry, Microbiology and Immunology
University of Ottawa

Research Interests

• Cholesterol regulation and transport in mammalian cells
• Plasma membrane: nanodomains and phospholipid asymmetry between leaflets
• Cholesterol regulation of metabolic processes
• Cholesterol regulation of histone modifications and epigenome
• Cholesterol regulation of Macrophage inflammation

Brief Biography

Dr. Zha obtained her Ph.D. in Chemistry from Cornell University (Ithaca, NY) with Dr. George Morrison, studying secondary ion mass spectrometry (SIMS). She then pursued postdoctoral research in cell biology with Dr. Fred Maxfield at Columbia University in New York City, where she used advanced fluorescent microscopy to study cellular membrane dynamics. It is during this period that she developed interests in cholesterol and, particularly, how cholesterol dis-regulation impacts on human diseases.

Selected Publications

1. Salloum Z, Dauner K, Verma N, Zhang D, Nakka K, Valdivieso-González D, Almendro-Vedia V, McDonald J, Sorisky A, López-Montero I, Dilworth FJ, Zha X, “Statin-mediated reduction in mitochondrial cholesterol primes an anti-inflammatory response in macrophages by upregulating JMJD3”. bioRxiv, 2023, 10.1101/2023.01.09.523264 (under revision)

2. Nakka K, Hachmer S, Mokhtari Z, Kovac R, Bandukwala H, Bernard C, Li Y, Xie G, Liu C, Fallahi M, Megeney LA, Gondin J, Chazaud B, Brand M, Zha X, Ge K, Dilworth FJ. “JMJD3 activated hyaluronan synthesis drives muscle regeneration in an inflammatory environment”. Science. 2022 Aug 5;377(6606):666-669.

3. Singh RK, Haka AS, Bhardwaj P, Zha X and Maxfield FR, “Dynamic Actin Reorganization and Vav/Cdc42-dependent Actin Polymerization Promote Macrophage Aggregated LDL Uptake and Catabolism” Arteriosclerosis, Thrombosis, and Vascular Biology (ATVB), 2019, Feb; 39(2): 137-149.

4. Courtney KC, Fung KYY, Maxfield FR, Fairn GD, Zha X, “Comment on “Orthogonal lipid sensors identify transbilayer asymmetry of plasma membrane cholesterol.”” eLife, 2018, Nov. 13; 7-10.

5. Courtney KC, Pezeshkian W, Raghupathy R, Zhang C, Darbyson A, Ipsen JH, Ford DA, Khandelia H, Presley JF, Zha X, “C24 Sphingolipids Govern the Transbilayer Asymmetry of Cholesterol and Lateral Organization of Model and Live-Cell Plasma Membranes.” Cell Reports, 2018 Jul 24;24(4):1037-1049.

6. Eid W, Dauner K, Courtney, Gagnon A, Parks R, Sorisky A, Zha X, “mTORC1 Activates SREBP-2 by Suppressing Cholesterol Trafficking to Lysosomes in Mammalian Cells”, Proc. Natl. Acad. Sci. 2017, Jul 25;114(30):7999-8004.

7. Dauner K, Eid W, Raghupathy R, Presley JF, Zha X, “mTOR complex 1 activity is required to maintain the canonical endocytic recycling pathway against lysosomal delivery”. J. Biol. Chem., 2017, April 7;292(14):5737-5747.

Diseases, conditions and populations of interest





Research and clinical approaches