Description: The monoclonal antibody H194-112 recognizes mouse CD26, a thymocyte-activating molecule （THAM）. CD26 is a surface expressed and soluble ectoenzyme （dipeptidyl peptidase IV） that cleaves dipeptides from the amino terminus of proteins. In particular CD26 has been shown to cleave CXCL12, CCL22, neuropeptide Y and glucagon. CD26 is involved in adhesion, apoptosis, disease regulation, and engraftment. Expression is regulated during thymic development at the messenger RNA level. Additionally, CD26 protein is found on thymocytes, a percentage of resting B cells, stimulated B cells, NK cells and a percentage of resting and activated T cells and other epithelial cell types. On human cells more CD26 protein is found on Th2 cells. Functional CD26 is expressed on Sca-1+c-Kit+lin- cells. This expression has been shown to correlate with mobilization of progenitor cells. Inhibition of CD26 activity through a variety of compounds enhances allogenic stem cell homing and engraftment.

This antibody is reported to have activating function.