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L002 (NSC764414) is a novel selective, cell permeable and reversible inhibitor of p300 histone acetyl transferase (IC₅₀?~1.98 μM). It has no activity in histone methyltransferases tested, including DOT1, EZH1, G9a, PRMT1, SETD2, SET7-9, SMYD2, and SUV39H2 etc. L002 was shown to occupy Ac-CoA binding pocket of p300, and is less potent to CBP, PCAF, GCN5 and GNAT. It suppresses Histone H3 and H4 acetylation in triple negative breast cancer cell line MDAMB-468 as well as in HCT116 cell line and blocks p300-mediated STAT3 phosphorylation in pancreatic cancer cell line MIA Paca-2. L002 can suppress tumor growth and histone acetylation in a mouse MDA-MB-468 xenograft model.

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How to Use:

• In vitro:? L002 was used at 5-30 μM final concentration in various in vitro assays.?
• In vivo:?L002 was administered through IP injection at 500 μg/100 μl twice a week for 3 weeks in xenografts models.

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Reference:

• 1. Yang H, et al. Small-molecule inhibitors of acetyltransferase p300 identified by high-throughput screening are potent anticancer agents. (2013) Mol Cancer Ther. 12(5):610-20.