Biological Activity
pf-562271 is a potent, atp-competitive and reversible inhibitor of both focal adhesion kinase (fak), a non-receptor tyrosine kinase involved in a variety of cellular events, and proline-rich tyrosine kinase 2 (pyk2), an fak homolog containing 48% amino acid identity, with half maximal inhibitory concentration (ic50) of 1.5 nmol/l and 14 nmol/l respectively. as a potential therapeutic agent either alone or in combination with other agents for the treatment of cancer, pf-562271 has been reported to effectively inhibit the proliferation of tumors in both xenograft and transgenic mouse models, in which it dose-dependently inhibits fak phosphorylation in tumor-bearing mice with half maximal effective concentration (ec50) of 93 ng/ml.
References
[1]stokes jb, adair sj, slack-davis jk, walters dm, tilghman rw, hershey ed, lowrey b, thomas ks, bouton ah, hwang rf, stelow eb, parsons jt, bauer tw. inhibition of focal adhesion kinase by pf-562,271 inhibits the growth and metastasis of pancreatic cancer concomitant with altering the tumor microenvironment. mol cancer ther. 2011 nov;10(11):2135-45. doi: 10.1158/1535-7163.mct-11-0261. epub 2011 sep 8.
[2]roberts wg, ung e, whalen p, cooper b, hulford c, autry c, richter d, emerson e, lin j, kath j, coleman k, yao l, martinez-alsina l, lorenzen m, berliner m, luzzio m, patel n, schmitt e, lagreca s, jani j, wessel m, marr e, griffor m, vajdos f. antitumor activity and pharmacology of a selective focal adhesion kinase inhibitor, pf-562,271. cancer res. 2008 mar 15;68(6):1935-44. doi: 10.1158/0008-5472.can-07-5155.
