New prenylated isoflavonoids as protein tyrosine phosphatase 1B (PTP1B) inhibitors from Erythrina addisoniae

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• 作者：Phi Hung Nguyen ; Govinda Sharma ; Trong Tuan Dao ; Mohammad Nasir Uddin ; Keon Wook Kang ; Derek Tantoh Ndinteh ; Joseph Tanyi Mbafor ; Won Keun Oh
• 关键词：Erythrina addisoniae ; Protein tyrosine phosphatase 1B (PTP1B) ; Cytotoxic activity ; Breast cancer cells
• 刊名：Bioorganic and Medicinal Chemistry
• 出版年：2012
• 出版时间：1 November, 2012
• 年：2012
• 卷：20
• 期：21
• 页码：6459-6464
• 全文大小：390 K

文摘

Bioassay-guided fractionation of the EtOAc extract of the root of Erythrina addisoniae (Leguminosae) resulted in the isolation of four new (1-4), along with 2 known prenylated isoflavonoids (5-6). The structures of the isolates were assigned on the basis of spectroscopic data analysis, focusing on interpretation of 1D and 2D NMR, and MS data. All the isolates were evaluated for their inhibitory effects on protein tyrosine phosphatase 1B (PTP1B), as well as their growth inhibition on MCF7, adriamycin-resistant MCF7 (MCF7/ADR), and MDA-MB-231 breast cancer cell lines. Compounds which exhibited PTP1B inhibitory activity (IC₅₀ values ranging from 4.6 ¡À 0.3 to 24.2 ¡À 2.1 ¦ÌM) showed potential cytotoxic activity (IC₅₀ values ranging from 3.97 ¡À 0.17 to 11.4 ¡À 1.9 ¦ÌM). Taken together, our data suggest that prenylated isoflavonoids, especially the isoflavone-type skeleton could be considered as new lead compounds against breast cancer via PTP1B inhibition.