Bortezomib (GMP) (PS-341 (GMP)) is Bortezomib (HY-10227) produced by using GMP guidelines. GMP small molecules works appropriately as an auxiliary reagent for cell therapy manufacture. Bortezomib (PS-341) is a reversible and selective proteasome inhibitor, and potently inhibits 20S proteasome (Ki=0.6 nM) by targeting a threonine residue. Bortezomib disrupts the cell cycle, induces apoptosis, and inhibits NF-kappaB. Bortezomib is the first proteasome inhibitor anticancer agent. Bortezomib can be used for the study of multiple myeloma (MM)[1][2]. Bortezomib effectively inhibits TREM2 expression in tumor-associated macrophages (TAMs)[7].