79 citations
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October 2003 in “PubMed” In this study, PKCepsilon transgenic mice showed increased TNFalpha shedding during skin tumor promotion, which may contribute to the development of metastatic squamous cell carcinoma.
4 citations
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January 2001 in “Archives of Biochemistry and Biophysics” This study found that TPA induces apoptosis in pig renal epithelial cells by affecting cell cycle proteins, and activated ras can prevent this process.
In this study, the combined treatment of ursolic acid and resveratrol was evaluated for its effects on skin tumor promotion in female FVB mice. The combination was applied topically before TPA treatment and was found to significantly inhibit TPA-induced epidermal hyperproliferation, signaling pathways, and skin inflammation more effectively than either compound alone. Key signaling pathways affected included EGFR, STAT3, and NF-κB, among others. The combination also increased tumor suppressor levels and reduced proinflammatory cytokine expression. Overall, the combined treatment resulted in a greater reduction in tumor multiplicity and size, highlighting its potential as a more effective strategy for inhibiting skin tumor promotion compared to individual treatments.
In this study, the combined treatment of ursolic acid and resveratrol was evaluated for its inhibitory effects on skin tumor promotion in female FVB mice. The combination was applied topically before TPA treatment and was found to significantly inhibit TPA-induced epidermal hyperproliferation, signaling pathways, and skin inflammation more effectively than either compound alone. Key signaling pathways affected included EGFR, STAT3, and NF-κB, among others. The combination also increased tumor suppressor levels and reduced proinflammatory cytokine expression. Overall, the combined treatment resulted in a greater reduction in tumor multiplicity and size, highlighting its potential as a more effective strategy for preventing skin tumor promotion compared to individual treatments.
77 citations
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January 1980 in “Carcinogenesis” This study found that TPA was significantly more effective than mezerein in inducing dark basal keratinocytes in mouse skin, which may be important in early tumor promotion stages.
