DPP4 inhibition drug screening kit
生物背景
DPP4 protein encoded by the DPP4 gene is an antigenic enzyme expressed on the surface of most cell types and is associated with immune regulation, signal transduction and apoptosis. It is an intrinsic membrane glycoprotein and a serine exopeptidase that cleaves X-proline dipeptides from the N-terminus of polypeptides.It is a rather indiscriminate enzyme for which a diverse range of substrates are known.The substrates of CD26/DPPIV are proline(or alanine)-containing peptides and include growth factors, chemokines, neuropeptides, and vasoactive peptides.
DPP4 is related to attractin, FAP, DPP8 and DPP9.DPP4 plays a major role in glucose metabolism. It is responsible for the degradation of incretins such as GLP-1.Furthermore, it appears to work as a suppressor in the development of cancer and tumours.CD26/DPPIV plays an important role in tumor biology, and is useful as a marker for various cancers, with its levels either on the cell surface or in the serum increased in some neoplasms and decreased in others.DPP-4 also binds the enzyme adenosine deaminase specifically and with high affinity. The significance of this interaction has yet to be established.