Abstract
Poor prognoses for colorectal cancer patients with metastatic lesions have driven demand for the development of novel targeted therapies. Here, we demonstrate that expression of bone morphogenetic protein 4 (BMP-4) is universally upregulated in human colorectal cancer cells and tissues, resulting in activated BMP signaling. Inhibition of endogenous BMP signaling by the BMP type I receptor inhibitor LDN-193189 elevated expression of the phosphatase DUSP5 in colorectal cancer cells, inducing apoptosis via dephosphorylation of Erk MAPK. Administering LDN-193189 to mice diminished tumor formation of colorectal cancer cells. Our findings suggest inhibition of autocrine BMP-4 as a candidate treatment strategy for colorectal cancer. Cancer Res; 77(15); 4026-38. ©2017 AACR.
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