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海洋来源的放线菌Z3001次级代谢产物抗肿瘤活性成分研究

Studies on the Bioactive Constituents of Secondary Metabolites of Marine-Derived Actinomycetes Z3001

【作者】 陆嘉

【导师】 崔承彬; 顾谦群;

【作者基本信息】 中国海洋大学 , 生药学, 2004, 硕士

【摘要】 本文采用小鼠乳腺癌细胞tsFT210,以细胞周期抑制、细胞凋亡诱导及细胞坏死为活性指标,在考察了海洋来源的放线菌Z3001生产活性物质的发酵条件的基础上进行了大量生产发酵,对此菌株发酵产物的抗肿瘤活性成分进行了生物活性筛选。结果表明,菌株Z3001的乙酸乙酯提取部分具有细胞坏死性细胞毒和周期抑制作用。我们采用活性追踪分离的方法对上述菌株的抗肿瘤活性成分进行了初步研究。 对上述活性部分采用减压硅胶柱层析、凝胶柱层析(Sephadex LH-20)、反相硅胶柱层析和反相制备高效液相(HPLC)等分离手段,从菌株Z3001分离得到11个单体化合物。利用理化性质和光谱学方法(UV、IR、MS、1D-NMR和2D-NMR),10个单体化合物分别鉴定为:正十六烷酸(1),3′-软脂酸甘油单酯(2),3,6-二烯-2,8-(8-羟基-9-甲基)癸基-1,5-二氧辛烷(4),3,4-二羟基-2-甲基-吡啶(5),环-(缬-脯)(6),环-(脯-亮)(7),4-羟基苯乙醇(8),1H-3-羧酸-吲哚(9a),1H-3-甲酰基-吲哚(9b),次黄嘌呤核苷(10)。 生物活性测试结果表明,化合物(1)(2)(4)对tsFT210小鼠乳腺癌细胞具有显著的坏死性细胞毒活性,化合物(4)还具有显著得诱导细胞调亡活性。化合物(1)(10)具有G2/M周期抑制活性。 本文首次发现化合物(4),在体外对小鼠乳腺癌温敏型tsFT210细胞有诱导细胞凋亡活性;化合物(10)在体外对小鼠乳腺癌温敏型tsFT210细胞有G2/M期抑制活性。化合物(3)结构有待进一步确定。 本文通过活性追踪分离的方法,成功地分离得到代表菌株Z3001次级代谢产物的抗肿瘤活性成分,证明这一模型及筛选方法可以快速准确找到海洋微生物中的活性成分,是寻找潜在药用价值活性化合物的有效手段。

【Abstract】 We have undertaken the screening for novel cell cycle inhibitors and apoptosis inducers from the marine-derived actinomycetes, Z3001 by use of a mouse cdc2 mutant cell line, tsFT210. In anticipation of achieving the above objectives, marine-derived actinomycetes, Z3001 have been screened by using this model, the EtOAC extracts of strain Z3001 showed bioactivities of inhibiting the cell cycle progression and cytoclasis of tsF210 cells. Thus, we selected them for further investigation.Eleven compounds were isolated from the bioactive part, EtOAC extract of strain Z3001, by repeated column chromatography on Sephadex LH-20, silica gel and RP18, followed by reverse-phase high performance liquid chromatragraphy. The structures of compounds were elucidated mainly by use of spectroscopic method (UV, IR, MS, 1D-NMR, 2D-NMR) and according to their physicochemical properties: palmitic acid(l), 2,3-dihydroxypropyl palmitate (2), 3,6-diene-2,8(8-hydroxy-9-methyl) decyl-l,5-dioxocane(4), 3, 4-Dihydroxy-2-methylpyridine (5), cyclo-(Val-Pro)(6), cycle- (Pro-Leu) (7), 4- (2-hydroxyethyl)phenol(8), 1H-indole-3-carboxylic acid(9a), lH-indole-3-carboxamide (9b), 2-(6-hydroxy-9H-purin-9-yl) -5- (hydroxymethyl) -tetrahydrofuran- 3,4-diol( 1 0). The structure of compound ( 3 ) is still in affirming.Bioassay results indicated that (1)(2)(4) show cell cycle inhibition and cytoclasis of tsFT210 cells. Compound (4) showed a strong apoptosis and cytoclasis of tsFT210 cells. Compound (1)(4)(10) show cell cycle inhibition and cytoclasis of tsFT210 cells, the were the main antitumor active compounds of EtOAC extract of strain Z3001.Bioassay results indicated that we isolated the main antitumor active compounds of strainZ3001 successfully which showed that this antitumor model and the method were exact and available in achieving bioactive components from marine microbes.

  • 【分类号】R73-3
  • 【被引频次】5
  • 【下载频次】365
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