NAZ2329, the first cell-permeable inhibitor of R5 subfamily of receptor-type protein tyrosine phosphatases (RPTPs), allosterically and preferentially inhibits PTPRZ (IC50=7.5 µM for hPTPRZ1) and PTPRG (IC50=4.8 µM for hPTPRG) over other PTPs. NAZ2329 binds to the active D1 domain and more potently inhibits PTPRZ-D1 fragment (IC50 of 1.1 µM) than the whole intracellular (D1 + D2) fragment (IC50 of 7.5 µM). NAZ2329 can effectively inhibit tumor growth of the glioblastoma cells and suppress stem cell-like properties.
