生物活性

• 描述FAK (Focal adhesion kinase), a non-receptor tyrosine kinase, can regulate the cytoskeleton and is reported to have increased expression in a number of tumor types, including breast, colon and ovarian cancers. Defactinib is a selective FAK inhibitor which dose-dependently down-regulated pFAK (Tyr397) at concentration ranging in 10nM-10μM in taxane-sensitive HeyA8 cells and 0.1-10μM in taxane-resistant HeyA8-MDR cells. Co-incubation of 1μM Defactinib and paclitaxel could decrease the paclitaxel-induced expression of YB-1 and its phosphorylation at Ser102 site, which has a potential role in oncogenic and drug-resistance pathways, as well as restored the location of YB-1 to cytoplasm, in HeyA8-MDR cells. For AKT is required to phosphorylation and translocation of YB-1, the signaling of AKT pathway was also examined. The resulted show that Defactinib could downregulate p-YB-1 and its nuclear translocation in an AKT-dependent manner, as well as inhibit p-FAK-Y397 and p-AKT-S473 in taxane-resistant SKOV3 cells. This inhibition of YB-1 by Defactinib through FAK may downregulate the expression of CD44, a downstream target of YB-1 and a partial contributor to the PTX-resistant phenotype, in HeyA8-MDR cells. Combined therapy of paclitaxel with Defactinib >25 mg/kg orally twice a day resulted in greater reduction in tumor growth of PTX-resistant models, including HeyA8-MDR and SKOV3-TR xenografts^[1].
• 作用机制Defactinib is an ATP-competitive, reversible inhibitor of FAK.^[2]

• 动物研究
  剂量	Nude Mice: 25 mg/kg[1] (p.o.)
  给药途径	p.o.

• 临床研究

• NCT号	适应症或疾病	临床期	招募状态	预计完成时间	地点
  NCT00787033	Cancer	Phase 1	Completed	-	United States, Massachusetts ... more >> Pfizer Investigational Site Boston, Massachusetts, United States, 02114 Pfizer Investigational Site Boston, Massachusetts, United States, 02115 Pfizer Investigational Site Boston, Massachusetts, United States, 02215 United States, Tennessee Pfizer Investigational Site Nashville, Tennessee, United States, 37203 Canada, Ontario Pfizer Investigational Site Toronto, Ontario, Canada, M5G 2M9 Collapse <<
  NCT03287271	Ovarian Cancer	Phase 1 Phase 2	Recruiting	October 2024	United States, California ... more >> University of California San Diego Recruiting San Diego, California, United States, 92023 Contact: Sara Neugroschl    858-822-7952 Collapse <<
  NCT02465060	Advanced Malignant Solid Neopl... more >>asm Bladder Carcinoma Breast Carcinoma Cervical Carcinoma Colon Carcinoma Colorectal Carcinoma Endometrial Carcinoma Esophageal Carcinoma Gastric Carcinoma Glioma Head and Neck Carcinoma Kidney Carcinoma Liver and Intrahepatic Bile Duct Carcinoma Lung Carcinoma Lymphoma Malignant Uterine Neoplasm Melanoma Ovarian Carcinoma Pancreatic Carcinoma Plasma Cell Myeloma Prostate Carcinoma Rectal Carcinoma Recurrent Bladder Carcinoma Recurrent Breast Carcinoma Recurrent Cervical Carcinoma Recurrent Colon Carcinoma Recurrent Colorectal Carcinoma Recurrent Esophageal Carcinoma Recurrent Gastric Carcinoma Recurrent Glioma Recurrent Head and Neck Carcinoma Recurrent Liver Carcinoma Recurrent Lung Carcinoma Recurrent Lymphoma Recurrent Malignant Solid Neoplasm Recurrent Melanoma Recurrent Ovarian Carcinoma Recurrent Pancreatic Carcinoma Recurrent Plasma Cell Myeloma Recurrent Prostate Carcinoma Recurrent Rectal Carcinoma Recurrent Skin Carcinoma Recurrent Thyroid Gland Carcinoma Recurrent Uterine Corpus Carcinoma Refractory Lymphoma Refractory Malignant Solid Neoplasm Refractory Plasma Cell Myeloma Skin Carcinoma Thyroid Gland Carcinoma Uterine Corpus Cancer Collapse <<	Phase 2	Recruiting	-	-

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• 参考文献

• [1] Kang Y, Hu W, et al. Role of focal adhesion kinase in regulating YB-1-mediated paclitaxel resistance in ovarian cancer. J Natl Cancer Inst. 2013 Oct 2;105(19):1485-95.

  [2] Shimizu T, Fukuoka K, et al. A first-in-Asian phase 1 study to evaluate safety, pharmacokinetics and clinical activity of VS-6063, a focal adhesion kinase (FAK) inhibitor in Japanese patients with advanced solid tumors. Cancer Chemother Pharmacol. 2016 May;77(5):997-1003.

  [3] Kolev VN, Tam WF, et al. Inhibition of FAK kinase activity preferentially targets cancer stem cells. Oncotarget. 2017;8(31):51733-51747.