Wortmannin (Synonyms: KY 12420) |
| Catalog No.GC12338 |
Wortmannin is a highly potent direct inhibitor of PI3-kinase specificity originally derived from fungi (1,2).
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Cas No.: 19545-26-7
Sample solution is provided at 25 µL, 10mM.
Wortmannin is a highly potent direct inhibitor of PI3-kinase specificity originally derived from fungi (1,2). This inhibition is irreversible and non-competitive with an IC50 of 3 nM[2][3]. Wortmannin does not inhibit PI4 kinase, protein kinase C, or protein tyrosine kinases[4].
In Jurkat cell, at the concentrations of wortmannin commonly used to inhibit PI 3-kinases, PLK1 is also significantly inhibited[5]. In Swiss 3T3 cells, Wortmannin is a selective and reversible phosphatidylinositol 3-kinase inhibitor with an IC50 value of 1.9 nM[4].PI3-kinase is involved in the signal transduction pathway responsible for histamine secretion following stimulation of Fc epsilon RI and that wortmannin blocks these responses through direct interaction with the catalytic subunit of this enzyme[1].
Wortmannin treatment significantly slower the growth rate of murine C3H mammary tumor and human MCF-7 breast cancer xenograft. A dose of 1 mg/kg Wortmannin for 7 days decrease the tumor burdens in mice with established murine C3H mammary tumors by 54% relative to controls. Human MCF-7 breast cancer xenograft burdens are decreased by 97% relative to controls after 14 days of 1 mg/kg Wortmannin beginning 1 day after tumor implantation[6]. Wortmannin inhibits myosin light chain phosphorylation and contraction in rat aorta. As an inhibitor of MLCK, wortmannin can be used as a vasodilator and anti-inflammatory agent[7].
References:
[1]: Yano H, Nakanishi S, et,al. Inhibition of histamine secretion by wortmannin through the blockade of phosphatidylinositol 3-kinase in RBL-2H3 cells. J Biol Chem. 1993 Dec 5;268(34):25846-56. PMID: 7503989.
[2]: Moon EK, Kim SH, et,al. Autophagy inhibitors as a potential antiamoebic treatment for Acanthamoeba keratitis. Antimicrob Agents Chemother. 2015 Jul;59(7):4020-5. doi: 10.1128/AAC.05165-14. Epub 2015 Apr 20. PMID: 25896709; PMCID: PMC4468686.
[3]: Liu Y, Jiang N, et,al. Polo-like kinases inhibited by wortmannin. Labeling site and downstream effects. J Biol Chem. 2007 Jan 26;282(4):2505-11. doi: 10.1074/jbc.M609603200. Epub 2006 Nov 29. PMID: 17135248.
[4]: Powis G, Bonjouklian R, et,al. Wortmannin, a potent and selective inhibitor of phosphatidylinositol-3-kinase. Cancer Res. 1994 May 1;54(9):2419-23. PMID: 8162590.
[5]: Liu Y, Shreder KR, et,al. Wortmannin, a widely used phosphoinositide 3-kinase inhibitor, also potently inhibits mammalian polo-like kinase. Chem Biol. 2005 Jan;12(1):99-107. doi: 10.1016/j.chembiol.2004.11.009. PMID: 15664519.
[6]: Lemke LE, Paine-Murrieta GD, et,al. Wortmannin inhibits the growth of mammary tumors despite the existence of a novel wortmannin-insensitive phosphatidylinositol-3-kinase. Cancer Chemother Pharmacol. 1999;44(6):491-7. doi: 10.1007/s002800051123. PMID: 10550570.
[7]: Nakanishi S, Kakita S, et,al.Wortmannin, a microbial product inhibitor of myosin light chain kinase. J Biol Chem. 1992 Feb 5;267(4):2157-63. PMID: 1733924.
Average Rating: 5 (Based on Reviews and 29 reference(s) in Google Scholar.)
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