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描述 | HO-3867, a curcumin analogue, is a selective STAT3 inhibitor. It selectively inhibited STAT3 phosphorylation, transcription, and DNA binding without affecting the expression of other active STATs at 10μM. HO-3867 significantly inhibited BRCA-mutated ovarian cancer cells expressing higher level of Tyrosine-phosphorylated STAT3 (pTyr705) in vitro, in a dose (1-20μM)- and time (12-48h)-dependent manner, with apoptosis shown by elevated levels of cleaved caspase-3, caspase-7 and PARP. Also, treatment with HO-3867 resulted in decreased expression of pTyr705 and its downstream targets cyclin D1, Bcl-2 and surviving in these cells. HO-3867 is a safe STAT3 Inhibitor for it exhibited minimal toxicity toward noncancerous cells and tissues but induced apoptosis in ovarian cancer cells. It inhibited cell migration/invasion and survival of primary human ovarian cancer cells isolated from patient ascites at 10μM post 24h. Administration of HO-3867 at 100ppm could block xenograft tumor growth without toxic side effects in nude mice injected with A2780 cells. | ||
作用机制 | HO-3867 has high affinity for a pocket located on the DNA-binding domain of the STAT3 and it could interact with both the STAT3 dimer and monomer structures.[1] |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
2.15mL 0.43mL 0.22mL |
10.76mL 2.15mL 1.08mL |
21.53mL 4.31mL 2.15mL |
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