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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (3): 321-323.

• 基础研究 • 上一篇    下一篇

金黄色葡萄球菌细胞壁可溶性肽聚糖的分离纯化和鉴定

张向武, 郑江, 伏建峰, 郭毅斌, 陈益国, 鲁永玲   

  1. 第三军医大学西南医院综合实验中心, 重庆400038
  • 收稿日期:2006-08-30 修回日期:2006-10-12 出版日期:2007-03-26 发布日期:2020-11-06
  • 通讯作者: 郑江, 男, 博士, 研究员, 主要从事脓毒症的发病机理及其拮抗措施的研究。Tel:023-68765466 E-mail:zhengj@mail.tmmu.cn
  • 作者简介:张向武, 男, 硕士研究生, 技师。Tel:023-60620026 E-mail:zxw153@sohu.com

Isolation purification and identification of soluble peptidoglycan from staphylococcus aureus

ZHANG Xiang-wu, ZHENG Jiang, FU Jian-feng, GUO Yi-bin, CHEN Yi-guo, LU Yong-ling   

  1. General Experimental Research Center, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China
  • Received:2006-08-30 Revised:2006-10-12 Online:2007-03-26 Published:2020-11-06

摘要: 目的:从金黄色葡萄球菌中提取纯化可溶性肽聚糖并鉴定其活性。方法:采用小剂量青霉素作用金黄色葡萄球菌(ATCC25923), 诱导合成可溶性肽聚糖(PGN) 粗品, 经Sephadex G-100 凝胶层析进一步分离纯化;采用SLP 试剂盒对纯化的可溶性PGN定性, ELISA 法检测纯化的可溶性PGN 对小鼠RAW264.7 细胞的活化作用。结果:分离纯化的可溶性PGN 经SLP 试剂检测阳性, 该可溶性PGN 可刺激RAW264.7 细胞释放TNF-α, 并具有明显的量效关系。结论:采用青霉素诱导结合凝胶层析技术可从金黄色葡萄球菌获取纯度及生物学活性较高的可溶性PGN 。

关键词: 肽聚糖, 金黄色葡萄球菌, 分离, 纯化

Abstract: AIM: To extract and identify the soluble peptidoglycan from staphylococcus aureus.METHODS: The soluble peptidoglycan from staphylococcus aureus (ATCC25923) was released by short dose penicillin. Then, the soluble peptidoglycan was purified by sephadex G-100.The SLP reagent set was employed to identify the purified soluble peptidoglycan, and the production stimulated by the purified soluble peptidoglycan in RAW264.7 cell was observed by ELISA.RESULTS: Detected by the SLP reagent, the purified soluble peptidoglycan showed positive.The purified soluble peptidoglycan was capable of stimulating the production of TNF-αin RAW264.7 cell, and the amounts of TNF-αreleased were directly proportional to the concentrations of PGN.CONCLUSION: The soluble peptidoglycan from staphylococcus aureus can be obtained by penicillin and sephadex G-100, which has higher biological reactivities.

Key words: peptidoglycan, staphylococcus aureus, isolation, purification

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