阿维丁:量子点-抗体结合物的天然桥梁
Ellen R Goldman1, Eric D Balighian, Hedi Mattoussi
1U.S. Naval Research Laboratory, Center for Bio/Molecular Science and Engineering and Division of Optical Sciences, Washington, D.C. 20375, USA. erg@cbmse.nrl.navv.mil
我们开发了一种简单的方法,使用avidin.com将半导体量子点 (QD) 与抗体联系起来. 这允许对蛋白质毒素进行敏感检测,并有可能进行多分析检测.
科学领域:
- 生物有机化学 生物有机化学
- 纳米技术纳米技术
- 免疫技术是一种免疫技术.
背景情况:
- 半导体纳米晶体量子点 (QD) 为生物成像和传感提供独特的发光特性.
- 对纳米材料的抗体结合对于有针对性的检测至关重要,但通常涉及复杂的程序.
研究的目的:
- 开发一种易于将发光量子点 (QD) 与抗体结合的方法.
- 为了描述由此产生的生物无机合物.
- 评估它们在免疫检测中用于蛋白质毒素检测的有用性.
主要方法:
- 在负电荷的CdSe-ZnS核心外QD上,avidin的静电自组装用二脂酸修饰.
- 生物化抗体与阿维丁-QD复合物的结合.
- 免疫测试用于检测葡萄球菌肠毒素B和霍乱毒素.
主要成果:
- 成功制备了QD和抗体的稳定生物无机结合物.
- 阿维丁桥促进了阿维丁在QD表面的强烈吸附.
- 在免疫检测中,QD抗体结合物有效检测到蛋白毒素的目标蛋白质.
结论:
- 已经建立了使用阿维丁的QD抗体结合的简单有效方法.
- 这些结合物作为多功能免疫试验试剂.
- 这种方法对开发多重或多分析检测系统具有前景.
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