Molecular Weight(MW): 270.24
Genistein, a phytoestrogen found in soy products, is a highly specific inhibitor of protein tyrosine kinase (PTK) which blocks the mitogenic effect mediated by EGF on NIH-3T3 cells with IC50 of 12μM or by insulin with IC50 of 19 μM.
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|Description||Genistein, a phytoestrogen found in soy products, is a highly specific inhibitor of protein tyrosine kinase (PTK) which blocks the mitogenic effect mediated by EGF on NIH-3T3 cells with IC50 of 12μM or by insulin with IC50 of 19 μM.|
Genistein is an ATP competitive inhibitor. Genistein inhibits tyrosine phosphorylation in isolated enzyme and receptor preparations and in whole cells including platelets, lymphocytes and a variety of cultured cells. It also inhibits EGF-stimulated phosphorylation in cultured cells as well as inhibition of Topo II (topoisomerase II). Genistein inhibits EGF-stimulated tyrosine phosphorylation in cultured A431 epidermoid carcinoma cells. Inhibition is competitive with ATP and noncompetitive with substrate.  Genistein blocks the mitogenic effect mediated by EGF, insulin and thrombin on NIH-3T3 cells. Genistein also acts as an agonist at the GPR30 receptor and binds to PPARγ and estrogen receptors. Genistein also binds to PPARγ, acting as an agonist at this receptor with Ki of 5.7 μM. 
|In vivo||Genistein has chemopreventive effects on breast, prostate, and other endocrine-dependent tumors in adult animals. Genistein in the diet reduced the incidence of poorly differentiated prostatic adenocarcinomas in a dose-dependent manner and down-regulated androgen receptor, estrogen receptor-alpha, progesterone receptor, epidermal growth factor receptor, insulin-like growth factor-I, and extracellular signal-regulated kinase-1 but not estrogen receptor-beta and transforming growth factor-alpha mRNA expressions. Dietary genistein protects against mammary and prostate cancers by regulating specific sex steroid receptors and growth factor signaling pathways. Genistein combined with prostate tumor irradiation causes greater inhibition of primary tumor growth and increases control of spontaneous metastasis to para-aortic lymph nodes, increasing mouse survival. Paradoxically, treatment with genistein alone increases metastasis to lymph nodes. |
-  Akiyama T, et al. J Biol Chem, 1987, 262(12), 5592-5595.
-  Linassier C, et al. Biochem Pharmacol, 1990, 39(1), 187-193.
-  Dang ZC, et al. J Biol Chem, 2003, 278(2), 962-967.
|In vitro||DMSO||54 mg/mL (199.82 mM)|
|Ethanol||2 mg/mL (7.4 mM)|
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Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT02766478||Recruiting||Prostate Cancer||Emory University||October 16 2017||Phase 2|
|NCT01489813||Recruiting||Bladder Cancer||Emory University|DSM Nutritional Products Inc.||May 19 2017||Phase 2|
|NCT03040531||Recruiting||Osteoporosis Steroid Induced||University of Messina|Ministry of Health Italy||January 19 2017||Phase 2|Phase 3|
|NCT02624388||Recruiting||Lymphoma|Childhood Lymphoma|Solid Tumor|Childhood Solid Tumor|Neuroblastoma|Ewing Sarcoma|Hodgkin Lymphoma|Non-Hodgkin Lymphoma|Rhabdomyosarcoma|Soft Tissue Sarcoma|Medulloblastoma|Germ Cell Tumor|Wilms Tumor|Brain Neoplasms|Medulloblastoma Childhood|Neuroectodermal Tumors Primitive||University of Virginia||August 2016||Phase 2|
|NCT02499861||Completed||Cancer||St. Justine''s Hospital||July 2015||Phase 1|Phase 2|
|NCT02796794||Unknown status||Sepsis||TC Erciyes University||June 2015||Phase 4|
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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