Abdelhadi Rebbaa, PhD
Research Assistant Professor of Pathology

Dr. Rebbaa is a member of the Division of Pediatric Pathology.
Office Location:
Department of Pathology, B260
Children's Hospital of UPMC
One Children's Hospital Drive
4401 Penn Avenue
Pittsburgh, PA 15224
Contact Information:
Office Telephone: 412-692-7043
Fax: 412-692-6550
Email: abr25@pitt.edu


  • BS - Claude Bernard University, Lyon, France, 1986
  • MS - Claude Bernard University, Lyon, France, 1987
  • PhD - Claude Bernard University, Lyon, France, 1993

Research Expertise

Dr. Rebbaa's research interest relates to understanding the biology of premalignant tumors and the molecular mechanism(s) responsible for their transition into full tumors. In particular, the roles of oncogenes and stress-induced epithelial mesenchymal transition (EMT) and senescence are being investigated in tumorigenesis, metastasis and innate resistance to therapy. Novel small molecules regulators of key signaling intermediates of EMT are under also investigation for anticancer activity.


  • American Association for Cancer Research

Selected Publications

View Dr. Rebbaa's publications on PubMed

Chu, F., Chou, PM., Mirkin, BL., Mousa, SA., and Rebbaa A.: Cellular conditioning with Trichostatin A enhances the anti-stress response through up-regulation of HDAC4 and down-regulation of the IGF/Akt pathway. Aging Cell 2008 7, 515-527.

Zheng, X, Chu, F, Mirkin BL, Sudha, T., Mousa SA, and Rebbaa, A. Role of the proteolytic hierarchy between cathepsin L, cathepsin D and caspase-3 in regulation of cellular susceptibility to apoptosis and autophagy. Biochim Biophys Acta. 2008 1783(12):2294-300.

Zheng, X, Chu, F, Mirkin, BL, Mousa SA, and Rebbaa, A. Targeting cathepsin L to suppress drug resistance in vitro and in vivo: mechanism of action. Am. J. Physiol. Cell Physiol. 2008 296 C65-74.

Shaker A. Mousa, Christine Gallati, Tessa Simone, Emmy Dier, Murat Yalcin, Evgeny Dyskin, Sudha Thangirala, Christine Hanko, and Rebbaa, A. Dual targeting of Sirt1 and TXNIP as potential anti-aging approach. Aging 2009 1:412-24.

Rebbaa, A., Dier E., Gallati, C., Sudha T., Dyskin, E., Hanko., and Mousa SA. The anti-angiogenic activity of Napsul-IL-Trp-CHO, a specific cathepsin L inhibitor. Anticancer Res. 2009 29, 4473-81.

Sudha T., Dier E., Gallati, C., Simone , T., Dyskin, E., Hanko., and Mousa SA., and Rebbaa, A. Stress-resistant human embryonic stem cells as a source for discovery of novel markers of cancer stem cells. Cancer Letters 2010 289 :208-16.

Basu, D., Gallati C., Delgado, C., Reyes-M˙gica, M., and Rebbaa, A. Epithelial to mesenchymal transition is an earlier cellular response to stress than cellular senescence: Implication in the formation of premalignant tumors. (Submitted).