Trask loss enhances tumorigenic growth by liberating integrin signaling and growth factor receptor cross-talk in unanchored cells.

ABSTRACT: The cell surface glycoprotein Trask/CDCP1 is phosphorylated during anchorage loss in epithelial cells in which it inhibits integrin clustering, outside-in signaling, and cell adhesion. Its role in cancer has been difficult to understand, because of the lack of a discernible pattern in its various alterations in cancer cells. To address this issue, we generated mice lacking Trask function. Mammary tumors driven by the PyMT oncogene and skin tumors driven by the SmoM2 oncogene arose with accelerated kinetics in Trask-deficient mice, establishing a tumor suppressing function for this gene. Mechanistic investigations in mammary tumor cell lines derived from wild-type or Trask-deficient mice revealed a derepression of integrin signaling and an enhancement of integrin-growth factor receptor cros

SUBMITTER: Spassov DS 

PROVIDER: S-EPMC3563920 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature