Apratastat (Synonyms: TMI-005)

TMI-005 is an inhibitor of disintegrin and metalloproteinase domain-containing protein 17/TNF-α converting enzyme (ADAM17/TACE), matrix metalloproteinase-1 (MMP-1), and MMP-13 (IC50s = 20, 33, and 8.1 nM, respectively).[1] It inhibits LPS-induced TNF-α release in isolated human whole blood (IC50 = 144 ng/ml).[2] TMI-005 (25 μM) reduces basal and ionizing radiation-induced secretion of the ADAM17/TACE substrates ALCAM and amphiregulin from A549 and NCI H125 cells.[3]It inhibits proliferation of A549 cells when used at concentrations of 25 and 50 μM and sensitizes A549 and NCI H125 cells to ionizing radiation at 25 μM. TMI-005 (25 mg/kg twice per day) reduces tumor growth in an A549 mouse xenograft model when administered in combination with ionizing radiation.

Reference:
[1]. Levin, J.I., Chen, J.M., and Cole, D.C. Acetylenic α-amino acid-based sulfonamide hydroxamic acid tace inhibitors. WO 00/44709, (2000).
[2]. Shu, C., Zhou, H., Afsharvand, M., et al. Pharmacokinetic-pharmacodynamic modeling of apratastat: A population-based approach. J. Clin. Pharmacol. 51(4), 472-481 (2011).
[3]. Sharma, A., Bender, S., Zimmerman, M., et al. Secretome signature identifies ADAM17 as novel target for radiosensitization of non-small cell lung cancer. Clin. Cancer Res. 22(17), 4428-4439 (2016).