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抑制劑描述：

產品名稱：LBH-589(Panobinostat)

產品別名：帕比司他

英文別名：LBH-589;LBH589;NVP-LBH589

靶點：HDAC (MOLT-4 cells) ，HDAC (Reh cells)

CAS：404950-80-7

純度：>98%

外觀：Powder

保存方法：store at -20℃ for one year（Powder）； in DMSO or others solvent store at 2-4℃ for two weeks, at -80℃ for six months.

描述：

Panobinostat(LBH-589) is a broad-spectrum HDAC inhibitor; low nanomolar concentrations (IC50=5-20 nM) of LBH589 induced cell-cycle arrest, apoptosis, and histone (H3K9 and H4K8) hyperacetylation in MOLT-4 and Reh cell.

溶解性：DMSO ：64 mg/mL (183.2 mM)

體外研究：

LBH589 induces apoptosis among MOLT-4 and Reh cells in a time- and dose-dependent manner. Moreover, LBH589 is more potent in MOLT-4 than in Reh cells. LBH589 markedly prevents the growth of both MOLT-4 and Reh cells in a dose-dependent manner at 48 hours. LBH589 treatment causes a 2- to 3-fold increase in the number of cells in the G2/M phase of the cell cycle compared with the control cells. LBH589 is associated with induction of histone H3K9 and histone H4K8 acetylation as well as decreasing levels of c-Myc expression in a dose-dependent manner. LBH589 treatment also increases the levels of p21 expression. LBH589 treatment also decreases the levels of c-Myc after an initial increase at the lowest dose (10 nM) in Reh cells. In addition, LBH589 gives rise to substantial increases in mRNA levels of proapoptosis and DNA repair genes. LBH589 induces increased levels of acetylated histone H3 and H4 at the GADD45G promoter. Besides, LBH589 inhibits growth of non small cell lung cancer cell lines (such as human H1299, L55 and A549 with IC50 of 5 nM, 11 nM and 30 nM, respectively), mesothelioma (such as human OK-6 and Ok-5 with IC50 of 5 nM and 7 nM, respectively) and small cell lung cancer cell lines (such as human RG-1 and LD-T with IC50 of 4 nM and 5 nM, respectively).

體內研究：In lung cancer and mesothelioma animal models, LBH589 markedly decreases tumor growth by 62%. LBH589 is equally effective in immunocompetent and severe combined immunodeficien-cymice, suggesting that the inhibition of tumor growth by LBH589 is not due to direct immunologic effects. Daily LBH589, given i.p. at 20 mg/kg for 5 days per week, leading to an average decrease in growth of 70%. Compared with the corresponding control tumors, LBH589 leads to a 53% decrease for H526-derived tumors, an 81% decrease for BK-T-derived tumors, a 76% decrease for RG-1- derived tumors, and a 70% decrease for H69-derived tumors. In contrast to the lack of tumor regression notes in NSCLC and Meso-derived xenografted tumors that are treated under identical conditions and doses, LBH589 results in dramatic tumor regression in SCLC-derived tumors and RG-1-derived tumor.

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