食品科学

• 营养卫生 • 上一篇    下一篇

叶酸代谢抑制剂对小鼠骨髓基质细胞增殖和分化的影响

王鸿超,刘 媛,顾震南,陈海琴,张 灏,陈 卫,陈永泉*   

  1. 江南大学食品学院,江苏 无锡 214122
  • 出版日期:2016-08-15 发布日期:2016-08-30

Effects of Folate Metabolism Inhibitors on the Proliferation and Differentiation of OP9 Mouse Stromal Cells

WANG Hongchao, LIU Yuan, GU Zhennan, CHEN Haiqin, ZHANG Hao, CHEN Wei, CHEN Yongquan*   

  1. School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
  • Online:2016-08-15 Published:2016-08-30

摘要:

采用四甲基偶氮唑蓝(methyl thiazolyl tetrazolium,MTT)法、细胞形态分析法及诱导分化法结合油红O染色法研究叶酸代谢中二氢叶酸还原酶抑制剂甲氨喋呤(methotrexate,MTX)、甲氨苄啶(trimethoprim,TMP)和乙胺嘧啶(pyrimethamine,PTM)对OP9小鼠骨髓基质细胞增殖和分化的影响,探讨叶酸代谢与脂质合成的关系。MTT实验结果显示,在一定浓度范围内,3 种叶酸抑制剂均能抑制OP9细胞增殖,并呈现一定的剂量-效应依赖关系。且3 种叶酸抑制剂在高浓度时对OP9细胞有毒性作用。倒置显微镜观察和油红O染色检测结果显示,TMP在500~1 000 μmol/L浓度范围内对OP9细胞分化为脂肪细胞具有抑制作用。荧光定量聚合酶链式反应分析表明,TMP会使叶酸代谢途径中二氢叶酸还原酶和亚甲基四氢叶酸脱氢酶的转录水平发生下调,这可能是TMP抑制脂肪细胞诱导分化的原因。

关键词: 二氢叶酸还原酶抑制剂, OP9小鼠骨髓基质细胞, 脂质合成, 增殖, 分化

Abstract:

Folate is a water-soluble vitamin B which has important physiological functions. The effects of methotrexate
(MTX), trimethoprim (TMP), and pyrimethamine (PTM) on the proliferation and differentiation of OP9 mouse stromal
cells were investigated by methyl thiazolyl tetrazolium (MTT) assay, cell morphology analysis and induced differentiation
combined with oil red O staining. MTX, TMP and PTM significantly inhibited the proliferation of OP9 cells in a dosedependent
manner within a certain concentration range. Cell morphology analysis showed that MTX, TMP and PTM were
cytotoxic to OP9 cells at high concentration. The results of inverted electron microscopic observation and oil red staining
showed that only TMP significantly inhibited the differentiation of OP9 cells in a dose-dependent manner in the range of
500–1 000 μmol/L. The transcription levels of DHFR and MTHFD1 were down-regulated by TMP, which may explain why
the differentiation of OP9 cells was inhibited by TMP.

Key words: dihydrololate reductase inhibitors, OP9 mouse stromal cells, lipid synthesis, proliferation, differentiation

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