首页> 外文期刊>The Journal of Antibiotics: An International Journal >2-Epi-anthracimycin, a new cytotoxic agent from the marine-derived actinomycete Streptomyces sp. OPMA00631
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2-Epi-anthracimycin, a new cytotoxic agent from the marine-derived actinomycete Streptomyces sp. OPMA00631

机译:2-Epi-anthracimycin,一种来自海洋衍生的放素瘤细胞链霉菌SP的新细胞毒性剂。 OPMA00631.

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摘要

A new cytotoxic agent designated as 2-epi-anthracimycin (1) was isolated along with anthracimycin and anthracimycin B (2-demethylanthracimycin) from the culture broth of the marine-derived actinomycete Streptomyces sp. OPMA00631. The structure of 1 was elucidated based on spectroscopic analyses (1D and 2D NMR data and ROESY correlations). Compound 1 exhibited cytotoxicity against Jurkat cells with an IC50 value of 50.5 mu M in 20 h. The effect of 1 on the cell cycle distribution of Jurkat cells was investigated. Compound 1 (7.80 mu M) increased G1 phase cells from 51.1 to 62.0% and conversely, decreased G2 and M phase cells from 30.7 to 19.3 % in 20 h. At a higher concentration, 1 (250 mu M) markedly increased subG1 phase cells (1.9% at 0 h to 16.5% at 20 h), while the proportion of G1 phase cells was maintained (62.3%). These results suggest that 1 exhibits cytotoxicity against Jurkat cells by arresting the cell cycle at the G1 phase.
机译:将指定为2-Epi-anthracimycin(1)的新细胞毒剂与蒽霉素和蒽霉素B(2-脱甲基霉素)与来自海洋衍生的放电素链霉素SP的培养液中的蒽霉素和炭疽霉素B(2-脱乙烷)。 OPMA00631。 基于光谱分析(1D和2D NMR数据和RoESY相关),阐明了1的结构。 化合物1表现出对Jurkat细胞的细胞毒性,IC50值为20小时50.5μm。 研究了1对Jurkat细胞细胞周期分布的影响。 化合物1(7.80μm)从51.1至62.0%的G1相细胞增加,相反,G2和M相细胞的差异从30.7%降至19.3%。 在较高的浓度下,1(250μm)显着增加了Subg1相细胞(0小时在20小时的1.9%至16.5%),而维持G1相细胞的比例(62.3%)。 这些结果表明,1通过在G1相的细胞周期中捕获细胞周期,1表现出对Jurkat细胞的细胞毒性。

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