CADM1 Antibody #30994

CADM1 (cell adhesion molecule 1, TSLC1, Necl-2, IgSF4, SynCAM1) is a member of the immunoglobulin (Ig) cell adhesion superfamily (1). It is a transmembrane protein that is primarily involved in mediating cell–cell adhesion (2,3). CADM1 is comprised of three extracellular Ig-like loops, a transmembrane domain, and a cytoplasmic tail that contains a 4.1 binding motif and a PDZ binding motif. The Ig-like loops contribute to cell-cell junction formation, whereas the cytoplasmic motifs provide structural linkage to the actin cytoskeleton and related adaptor proteins, including actin binding protein 4.1B and membrane-associated guanylate kinases (MAGUKs) (3-5). As an adhesion protein, CADM1 is involved in various biological processes in diverse cells and tissues (6). CADMI functions include structural maintenance and remodeling of epithelium, assembly of neuronal synapses, nerve-mast cell interaction, mast cell behavior, and T cell activation (3,7-9). In many solid tumors, CADM1 has been shown to function as a tumor suppressor by inhibiting malignant proliferation, invasion, and metastasis, while promoting tumor cell apoptosis. In some cases, however, CADM1 has been reported to promote tumor progression (6,10).