Peroxisome proliferator-activated receptor-delta attenuates colon carcinogenesis.

Harman, Fred S; Nicol, Christopher J; Marin, Holly E; Ward, Jerrold M; Gonzalez, Frank J; Peters, Jeffrey M · Nat Med · 2004

basic_science · Level V

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Abstract

Peroxisome proliferator-activated receptor-delta (PPAR-delta; also known as PPAR-beta) is expressed at high levels in colon tumors, but its contribution to colon cancer is unclear. We examined the role of PPAR-delta in colon carcinogenesis using PPAR-delta-deficient (Ppard(-/-)) mice. In both the Min mutant and chemically induced mouse models, colon polyp formation was significantly greater in mice nullizygous for PPAR-delta. In contrast to previous reports suggesting that activation of PPAR-delta potentiates colon polyp formation, here we show that PPAR-delta attenuates colon carcinogenesis.

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