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The Wnt/beta-catenin pathway plays an important role in initiation in most, if not all, colon cancers. Prior work has provided important insights into the regulation of beta-catenin stability in the cytoplasm; however, relatively little is known about the mechanism by which beta-catenin activates gene transcription in the nucleus. Using genetic approaches, studies in human colon cancers and Drosophila have identified CDK8 as a colon cancer oncogene that regulates beta-catenin transcriptional activity. These convergent observations provide new insights into the regulation of nuclear beta-catenin activity and identify a novel therapeutic target for beta-catenin-driven malignancies.
Firestein et al. (Wed,) studied this question.
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