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Function

Downstream regulator in the Wnt/Frizzled-signaling pathway. Associated with cell survival. Attenuates p53-mediated apoptosis in response to DNA damage through activation of AKT kinase. Up-regulates the anti-apoptotic Bcl-X(L) protein. Adheres to skin and melanoma fibroblasts. In vitro binding to skin fibroblasts occurs through the proteoglycans, decorin and biglycan.

Sequence similarities

Belongs to the CCN family.

Tissue specificity

Expressed in heart, kidney, lung, pancreas, placenta, ovary, small intestine and spleen. Isoform 2 is expressed predominantly in scirrhous gastric carcinoma and, weakly in placenta. Overexpression is associated with several cancers including breast cancer and colon tumors. Isoform 2 is overexpressed in scirrhous gastric carcinoma.

Cellular localization

  • Secreted

Alternative names

WISP1, CCN4, CCN family member 4, WNT1-inducible-signaling pathway protein 1, Wnt-1-induced secreted protein, WISP-1

Target type

Proteins

Primary research area

Oncology

Molecular weight

40331Da