应用化学 ›› 2011, Vol. 28 ›› Issue (02): 219-223.DOI: 10.3724/SP.J.1095.2011.00211

• 研究论文 • 上一篇    下一篇

磷酸盐洗脱液再生IMAC-Cu蛋白质芯片

蔡羽1,杜涛2,赵胜利2*,高春芳3   

  1. (1.河南科技大学信息管理研究所 洛阳;2.河南科技大学材料学院 洛阳 471003;
    3.解放军第150医院 洛阳)
  • 收稿日期:2010-04-12 修回日期:2010-07-10 出版日期:2011-02-10 发布日期:2011-02-10
  • 通讯作者: 赵胜利,副教授; E-mail:slzhao@mail.haust.edu.cn; 电话:0379-64237165; 传真:0379-64230597; 研究方向:蛋白质芯片制备及再生
  • 基金资助:
    国家自然科学基金(20504026)资助项目;河南省基础与前沿研究计划(072300440060)

Regeneration of IMAC-Cu Proteinchip by Phosphate Buffer Solution

CAI Yu1, DU Tao2, ZHAO Sheng-Li2*, GAO Chun-Fang3   

  1. (1.Information Management Institute,Henan University of Science & Technology,Luoyang;
    2.Materials Institute,Henan University of Science & Technology,Luoyang 471003;
    3.150 Hospital of Chinese People′s Liberation Army,Luoyang)
  • Received:2010-04-12 Revised:2010-07-10 Published:2011-02-10 Online:2011-02-10

摘要:

使用扫描电子显微镜(SEM)和蛋白质芯片检测系统考察了磷酸盐洗脱液pH值和竞争洗脱剂对IMAC-Cu蛋白质芯片再生的影响。 结果表明,随着磷酸盐洗脱液pH值降低,芯片所吸附的蛋白质越容易被去除,但对芯片表面化学结构的破坏也随之加剧。 在洗脱液中加入竞争洗脱剂乙二胺四乙酸(EDTA)或甘氨酸(Gly)可有效改善蛋白质的洗脱效果。 当磷酸盐洗脱液pH=6.5、竞争洗脱剂为0.02 mol/L EDTA、洗脱时间72 h时,芯片的再生效果最佳。

关键词: 蛋白质芯片, 磷酸盐洗脱液, 再生

Abstract:

The effects of pH value and eluent of phosphate buffer solution on the regeneration of immobilized metal affinity capture arrays-Cu(IMAC-Cu) proteinchip was studied by scanning electron microscope(SEM) and SELDI-TOF-MS proteinchip system. The results show that the adsorbed proteins can be easily removed. However, the negative influence on chemical structure of the proteinchip is getting worse with decreasing the pH value of the phosphate buffer solution. Adding eluent of EDTA or Gly in the phosphate buffer solution can obviously improve the protein desorption. The best regeneration results of IMAC-Cu proteinchip by phosphate solution are gained at pH=6.5 with using 0.02 mol/L EDTA as eluent for 72 h.

Key words: proteinchip, phosphate buffer solution, regeneration

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