吉林大学学报(医学版) ›› 2016, Vol. 42 ›› Issue (02): 210-214.doi: 10.13481/j.1671-587x.20160204

• 基础研究 • 上一篇    下一篇

基于FRET技术MMP3生物传感器载体的构建和鉴定

饶烽1, 崔钢华1, 王琰1, 刘伟2, 曹薇薇2, 史晨辉1,2, 王维山1,2   

  1. 1. 石河子大学医学院第一附属医院骨科, 新疆石河子 832000;
    2. 新疆民族与地方病教育部重点实验室, 新疆石河子 832000
  • 收稿日期:2015-07-21 发布日期:2016-03-31
  • 通讯作者: 王维山,副教授,硕士研究生导师(Tel:0993-2856692,E-mail:wwsmc2002@sina.com);史晨辉,教授,硕士研究生导师(Tel:0993-2856692,E-mail:gksch7890@sina.com) E-mail:wwsmc2002@sina.com;gksch7890@sina.com
  • 作者简介:饶烽(1989-),男,江苏省徐州市人,医学硕士,主要从事骨关节基础与临床方面的研究。
  • 基金资助:

    国家自然科学基金资助课题(81160225,81260453,81360451);新疆兵团医药卫生专项资助课题(2013BA020);兵团国际交流与合作专项基金资助课题(2012BC002,2011BC004);兵团科技创新团队专项基金资助课题(2014CC002)

Construction and identification of FRET-based MMP3 biosensor

RAO Feng1, CUI Ganghua1, WANG Yan1, LIU Wei2, CAO Weiwei2, SHI Chenhui1,2, WANG Weishan1,2   

  1. 1. Department of Orthopedics, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832000, China;
    2. Key Laboratory of Xinjiang Endemic Diseases, Ministry of Education, Shihezi 832000, China
  • Received:2015-07-21 Published:2016-03-31

摘要:

目的: 探讨基质金属蛋白酶3(MMP3)生物传感器载体的构建,阐明MMP3在活细胞中表达的时空信息。方法: 构建定位于细胞膜表面的ECFP-MMP3-YPet生物传感器载体并进行鉴定;转染293T细胞24h后观察转染效率;加尿激酶型纤溶酶原激活物(uPA)刺激293T细胞,运用荧光共振能量转移(FRET)技术在共聚焦显微镜下观察MMP3生物传感器载体的荧光共振能量转移情况ECFP-MMP3-YPet biosensor。结果: 成功构建ECFP-MMP3-YPet biosensor;PCR和双酶切鉴定,MMP3-YPet约780bp,转染293T细胞后MMP3生物传感器在胞质较均匀分布,转染效率约40%。uPA刺激293T细胞后,胞质和胞核内FRET比值逐渐降低,约30min时达到最小值,随后恢复正常。结论: 基于FRET构建的MMP3生物传感器可以敏感而准确地监测活细胞中MMP3的表达情况。

关键词: 荧光共振能量转移, 基质金属蛋白酶3, 生物传感器

Abstract:

Objective: To study the construction of matrix metalloproteinase 3(MMP3) biosensor vector, and to illuminate the activated process of MMP3 in the living cells.Methods: The ECFP-MMP3-YPet biosensor vector anchored on cellular surface was constructed and identified.The MMP3 biosensor was transfected into the 293T cells.The transfection efficiency was observed 24h after transfection.The flurorescence resonance energy transfer(FRET)-based MMP3 biosensor was observed by inversion fluorescence microscope.Results: The MMP3 biosensor vector was successfully constructed.The length of MMP3-YPet identified by double enzyme digestion and PCR was about 780bp.The transfection efficiency of MMP3 biosensor was about 40%, and which was evenly presented in cytoplasm of 293T cells.And the FRET ratio of MMP3 biosensor was decreased after stimulation with uPA on the 293T cells.The FRET ratio reached its minimum about 30 min later. Conclusion: The MMP3 biosensor can sensitively and reliably monitor the MMP3 activation in living cells.

Key words: flurorescence resonance energy transfer, matrix metalloproteinase 3, biosensor

中图分类号: 

  • R684