neoplasm
• treatment of mice in 7,12-dimethylbenz(a)antracene (DMBA) followed by 12-O-tetradecanoylphorbol-13 acetate (TPA) results in tumor formation with 7-11 week latency in all mutants whereas only 50% of wild-type mice develop papillomas after 11-16 weeks
• induced homozygotes develop 7-fold more, significantly larger papillomas than control littermates
• tumors in mutants and controls have a hyperplastic squamous epithelium with no sign of malignancy
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cellular
• exposure of keratinocytes to small interfering RNA specific for Bcl-3 abrogates TPA-induced proliferation
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• tumors exhibit large numbers of proliferating cells above the basal layer, which is not seen in tumors from wild-type mice; however apoptosis in tumors is similar to tumors in wild-type mice
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• TPA treatment induces proliferation in isolated Cyld-null keratinocytes
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integument
• exposure of keratinocytes to small interfering RNA specific for Bcl-3 abrogates TPA-induced proliferation
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• TPA treatment induces proliferation in isolated Cyld-null keratinocytes
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• a single dose of TPA induces epidermal hyperplasia and increases keratinocyte proliferation in back skin of mutants, but even after 20 weeks of treatment no tumor formation is observed
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• treatment of mice in 7,12-dimethylbenz(a)antracene (DMBA) followed by 12-O-tetradecanoylphorbol-13 acetate (TPA) results in tumor formation with 7-11 week latency in all mutants whereas only 50% of wild-type mice develop papillomas after 11-16 weeks
• induced homozygotes develop 7-fold more, significantly larger papillomas than control littermates
• tumors in mutants and controls have a hyperplastic squamous epithelium with no sign of malignancy
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