ADAM10 is a sheddase, and has a broad specificity for peptide hydrolysis reactions. ADAM10 cleaves ephrin, within the ephrin/eph complex, formed between two cell surfaces. When ephrin is freed from the opposing cell, the entire ephrin/eph complex is endocytosed. In neurons, ADAM10 is the most important enzyme, with α-secretase activity for proteolytic processing of the amyloid precursor protein. ADAM10, along with ADAM17, cleaves the ectodomain of the triggering receptor expressed on myeloid cells 2 (TREM2), to produce soluble TREM2 (sTREM2), which has been proposed as a CSF and sera biomarker of neurodegeneration. ADAM10 being a major determinant of HER2 shedding, the inhibition of which, may provide a novel therapeutic approach for treating breast cancer and a variety of other cancers with active HER2 signaling.
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