IKK promotes intestinal tumorigenesis

Depending on the tumor type IB kinase (IKK) can act as tumor promoter or tumor suppressor in various malignancies. Here we demonstrate a key function of IKK in the suppression of a tumoricidal microenvironment during intestinal carcinogenesis. Mice deficient in IKK kinase activity are largely protected from intestinal tumor development that is dependent on the enhanced recruitment of IFN expressing M1-like myeloid cells. In IKK mutant mice M1-like polarization is not controlled in a cell autonomous manner but depends rather on the interplay of both IKK mutant tumor epithelia and immune cells.

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Göktuna SI, Canli O, Bollrath J, Fingerle AA, Horst D, Diamanti MA, Pallangyo C, Bennecke M, Nebelsiek T, Mankan AK, Lang R, Artis D, Hu Y, Patzelt T, Ruland J, Kirchner T, Taketo MM, Chariot A, Arkan MC, Greten FR