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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

CLIC4, an intracellular chloride channel protein, is a novel molecular target for cancer therapy.

Chloride intracellular channel (CLIC)4 is a p53- and tumor necrosis factor alpha (TNFalpha)-regulated chloride channel protein that is localized to the mitochondria and cytoplasm of mouse and human keratinocytes. CLIC4 protein increases in differentiating keratinocytes and in keratinocytes exposed to DNA-damaging agents and metabolic inhibitors. Increasing CLIC4 levels by transduction of recombinant CLIC4 causes apoptosis. CLIC4 translocates to the nucleus under a variety of conditions of cell stress, and nuclear CLIC4 is associated with cell cycle arrest and accelerated apoptosis. Reduction of CLIC4 and several other CLIC family members by expressing a doxycycline- regulated CLIC4 antisense also causes apoptosis in squamous cancer cell lines. Expressing antisense CLIC4 in tumors derived from transplanting these cells into nude mice inhibits tumor growth, increases tumor apoptosis, and reduces tumor cell proliferation. Co-administration of TNFalpha intraperitoneally enhances the tumor-inhibitory influence of CLIC4 antisense expression. Together, these results suggest that CLIC4 is important for keratinocyte viability and may be a novel target for anti-cancer therapy.[1]


  1. CLIC4, an intracellular chloride channel protein, is a novel molecular target for cancer therapy. Suh, K.S., Mutoh, M., Gerdes, M., Yuspa, S.H. J. Investig. Dermatol. Symp. Proc. (2005) [Pubmed]
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