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-κB. Bortezomib is the first proteasome inhibitor anticancer agent. Anti-cancer activity[1][2].
IC50 & Target
Ki: 0.6 nM (20S proteasome)[1]
体外研究 (In Vitro)
Bortezomib (PS-341) (100 nM; 8 hours) results in the accumulation of cells in G2-M, with a corresponding decrease in the number of cells in G1[1]. Bortezomib (PS-341) (5-100 nM; 20 hours) induces apoptosis in mantle-cell lymphoma (MCL) cell lines[3]. Bortezomib (PS-341) (20 nM; 1-14 hours) induces Noxa up-regulation in both MCL cell lines[3]. The IC50 of Bortezomib (PS-341) is found to be 2.46 nM for 26S proteasome in the B16F10 cells[4]. Bortezomib (PS-341) suppresses several anti-apoptotic proteins (e.g., Bcl-XL, Bcl-2, and STAT-3)[5].
上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.
Cell Cycle Analysis[1]
Cell Line:
PC-3 cells
Concentration:
100 nM
Incubation Time:
8 hours
Result:
Resulted in the accumulation of cells in G2-M, with a corresponding decrease in the number of cells in G1.
[1]. Adams J, et al. Proteasome inhibitors: a novel class of potent and effective antitumor agents. Cancer Res. 1999 Jun 1;59(11):2615-22.
[2]. Shahshahan MA, et al. Potential usage of proteasome inhibitor bortezomib (Velcade, PS-341) in the treatment of metastaticmelanoma: basic and clinical aspects. Am J Cancer Res. 2011;1(7):913-24.
[3]. Pérez-Galán P, et al. The proteasome inhibitor bortezomib induces apoptosis in mantle-cell lymphoma through generation of ROS and Noxa activation independent of p53 status. Blood. 2006 Jan 1;107(1):257-64.
[4]. Yerlikaya A, et al. Combined effects of the proteasome inhibitor bortezomib and Hsp70 inhibitors on the B16F10 melanoma cell line. Mol Med Rep. 2010 Mar-Apr;3(2):333-9.
[5]. Mujtaba T, et al. Advances in the understanding of mechanisms and therapeutic use of bortezomib. Discov Med. 2011 Dec;12(67):471-80.
[6]. Fernández Y, et al. Chemical blockage of the proteasome inhibitory function of bortezomib: impact on tumor cell death. J Biol Chem. 2006 Jan 13;281(2):1107-18.