School of Pharmaceutical Sciences, Xiamen University, South Xiangan Road, Xiamen 361005, China.
Key Laboratory of Marine Biogenetic Resources, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China.
Mar Drugs. 2019 Mar 19;17(3):178. doi: 10.3390/md17030178.
Five new ergostanes, penicisteroids D-H (-), were isolated from the liquid culture of the deep-sea-derived fungus MCCC 3A00475, along with 27 known compounds. The structures of the new steroids were established mainly on the basis of extensive analysis of 1D and 2D NMR as well as HRESIMS data. Moreover, the absolute configurations of were confirmed unambiguously by the single-crystal X-ray crystallography. Compounds and ⁻ showed moderate antiproliferative effects selectively against 12 different cancer cell lines with IC values of around 5 μM. Compounds and , potent binders with Kd values of 13.8 and 12.9 μM, respectively, could induce apoptosis by a Retinoid X Receptor ()--dependent mechanism by regulating RXRα transcriptional expression and promoting the poly-ADP-ribose polymerase (PARP) cleavage. Moreover, they could inhibit proliferation by cell cycle arrest at the G0/G1 phase.
从深海来源的真菌 MCCC 3A00475 的液体培养物中分离得到了 5 个新的麦角甾烷,penicisteroids D-H (-),以及 27 个已知化合物。新甾体的结构主要是基于 1D 和 2D NMR 以及 HRESIMS 数据的广泛分析确定的。此外,通过单晶 X 射线晶体学明确确定了的绝对构型。化合物和 ⁻ 对 12 种不同的癌细胞系表现出中等的选择性抗增殖作用,IC 值约为 5 μM。化合物和 ⁻ 是有效的结合物,其 Kd 值分别为 13.8 和 12.9 μM,通过调节 RXRα 转录表达和促进聚 ADP-核糖聚合酶 (PARP) 切割,以视黄酸 X 受体 () 依赖性机制诱导细胞凋亡。此外,它们可以通过将细胞周期阻滞在 G0/G1 期来抑制增殖。