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PHT-427

CAS No. : 1191951-57-1

MCE 站：PHT-427

产品活性：PHT-427 是一种 Akt 和 PDPK1 双重抑制剂，与 Akt 和 PDPK1 中的 PH 结构域有亲和性，K_i 分别为 2.7 μM 和 5.2 μM。

研究领域：PI3K/Akt/mTOR  |  Apoptosis

作用靶点：Akt  |  Apoptosis

In Vitro: The effects of PHT-427 on cell signaling are investigated by RPPA using a panel of 86 antibodies to phospho- ａnd non-phosphorylated signaling protein related to PtdIns-3-K/PDPK1/Akt signaling in PC-3 prostate cells where PtdIns-3-K/PDPK1/Akt signaling is activated because of homozygous PTEN mutation. After 16 hours, a reduction is observed in phospho-Ser²⁴¹-PDPK1 phospho-Thr³⁰⁸-Akt by both 10 µM PH-427 ａnd 0.1 µM Wortmannin. Finally, phospho-Ser⁶⁵⁷-protein kinase C (PKC) ａnd total SGK1 are decreased by treatment with both PHT-427 ａnd Wortmannin. These results suggest that at 10 µM PHT-427 inhibits both Akt ａnd PDKP1. The BxPC-3 ａnd MiaPaCa-2 pancreatic cancer cell lines are probed by Western blotting following up to 24 hr exposure to 10 µM PHT-427, which is below the IC₅₀ for cell growth inhibition of around 30 µM, to determine the effects of PHT-427 on of the PtdIns-3-K/PDPK1/Akt signaling pathway components.

In Vivo: Mice with BxPC-3 pancreatic, MCF-7 breast or A-549 NSCL cancer xenografts are administered PHT-427, or its analogs with a C-4, C-6 or C-8 alkyl chain by oral gavage twice a day for 10 days. The results show that PHT-427 has the greatest antitumor activity with the C-8 chain analog having less activity, ａnd analogs with a C-4 or C-6 chain very little activity. All further antitumor studies are conducted using compound PHT-427. Plasma levels of PHT-427 following oral administration to mice of a dose of 200 mg/kg show rapid absorption, without a lag phase, C_max is 8.2 µg/mL 1 hr following dosing, ａnd the elimination half-life is 1.4 hr with a terminal PHT-427 concentration of 0.1 µg/mL 10 hr after dosing. The plasma concentration of PH-427 is above the level which gave inhibition of Akt ａnd PDPK1 signaling in cells of 10 µM (4 µg/mL) for at least 3 hr.

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