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中国真菌学杂志 2011, Vol. 6  Issue (6): 341-343.

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蒺藜中甾体皂苷对新生隐球菌生物膜形成的抑制作用

李秀丽1, 田媛2, 史玉玲1, 顾俊瑛1, 刘至昱1, 李晓建1, 高飞1   

  1. 1. 同济大学附属上海第十人民医院皮肤科, 上海, 200072;
    2. 第二军医大学药学院生化药学教研室, 上海, 200433
  • 收稿日期:2011-08-26 出版日期:2011-12-28 发布日期:2011-12-28
  • 作者简介:李秀丽,女(汉族),博士,主治医师.E-mail:xiuxiu_li@126.com

Inhibitory effects of Tribulus terrestris steroid saponin TTS-12 on building biofilm of Cryptococcus neoformans

LI Xiu-li1, TIAN Yuan2, SHI Yu-ling1, GU Jun-ying1, LIU Zhi-yu1, LI Xiao-jian1, GAO Fei1   

  1. 1. Department of Dermatology, The 10th People’s Hospital of Shanghai, Tongji University, Shanghai, 200072, China;
    2. Department of New Drug Research Center, School of Pharmacy, Second Military Medical University, Shanghai, 200433, China
  • Received:2011-08-26 Online:2011-12-28 Published:2011-12-28

摘要: 目的 观察蒺藜甾体皂苷类化合物TTS-12对新生隐球菌生物膜形成的影响,探讨其可能的作用机制。方法 光镜观察TTS-12对新生隐球菌生物膜生长形态的影响;MTT法观察TTS-12对新生隐球菌生物膜形成的影响;实时定量RT-PCR观察不同浓度TTS-12对新生隐球菌细胞生物膜关键基因PMT4表达的影响。结果 经TTS-12处理的新生隐球菌生物膜结构更疏松,TTS-12可剂量依赖性地降低新生隐球菌生物膜生长动力学指标及PMT4基因表达水平(P<0.01)。结论 TTS-12可抑制新生隐球菌生物膜的形成。通过降低新生隐球菌PMT4基因表达可能是其抑制新生隐球菌生物膜的形成作用机制之一。

关键词: 蒺藜, 新生隐球菌, 生物膜, TTS-12, PMT4

Abstract: Objective To investigate the influence of TTS-12,a steroid saponin from Tribulus terrestris,on building biofilm of Cryptococcus neoformans,and to explore the possible mechanism.Methods The inhibitory effects of biofilm formation of Cryptococcus neoformans by TTS-12 was observed by microscopy and assessed by MTT method.The expression of PMT4 mRNA was measured by real-time RT-PCR with different concentrations of TTS-12.Results Compared with control group,TTS-12 treatment showed inhibitory effects on the formation process,making the biofilm more loosened.The growth kinetics and PMT4 mRNA level in TTS-12-treated group were dose-dependently lower than those in the control group(P<0.01).Conclusions TTS-12 may has inhibitory effect on formation of Cryptococcus biofilm by PMT4 gene.

Key words: Tribulus terrestris, Cryptococcus neoformans, biofilm, TTS-12, PMT4

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