Journal
CANCER RESEARCH
Volume 64, Issue 17, Pages 6266-6270Publisher
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/0008-5472.CAN-04-1367
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- NCI NIH HHS [CA092090] Funding Source: Medline
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Chemotherapeutic agents induce p53-dependent apoptosis in the hair follicle (HF) resulting in hair loss, a common side effect of cancer therapy. Here, we show that Fas as a p53 target plays important role in the HF response to cyclophosphamide. Specifically, we demonstrate that Fas is up-regulated in HF keratinocytes after cyclophosphamide treatment, Fas ligand-neutralizing antibody partially inhibits HF response to cyclophosphamide in wild-type mice, and Fas knockout mice show significant retardation of cyclophosphamide-induced HIT involution associated with reduced Fas-associated death domain and caspase-8 expression. These data raise a possibility to explore blockade of Fas signaling as a part of complex local therapy for inhibiting keratinocyte apoptosis and hair loss induced by chemotherapy.
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