以纳米粒子为基础的光活性探头进行上转化,以高效地标记和隔离 protein的目标蛋白质
Shengli Zhang1, Peng Liu1, Li Li1
1State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China.
ACS applied materials & interfaces
|August 16, 2023
概括
这项研究引入了近红外光驱动的光亲和度标签 (PAL) 使用基于升级纳米粒子 (UCNP) 的探测器. 这种新的方法克服了紫外线光的局限性,以有效地在体内进行蛋白质标记和目标识别,最小的光损伤.
科学领域:
- 生物化学 生物化学
- 化学生物学 化学生物学
- 纳米技术纳米技术
背景情况:
- 光亲和度标签 (PAL) 对于识别生物分子点至关重要,但面临着低效率,光损伤和紫外线有限的组织透等挑战.
- 特定的标,特别是具有较低联结亲和力的讲蛋白,仍然难以使用传统的PAL方法有效标记.
研究的目的:
- 开发一种新的近红外 (NIR) 光驱动光亲和度标记 (PAL) 方法,使用基于升级纳米粒子 (UCNP) 的探测器.
- 克服基于紫外线的PAL的局限性,包括组织透率低和细胞光损伤,以实现高效的体内蛋白质标记和标识.
主要方法:
- 通过组装光活性组和配体到NaYF4:Yb,Tm纳米粒子上,构建基于UCNP的光活性探头.
- 使用NIR光进行光激活,使得像花生聚氨酸 (PNA),亚亚糖蛋白受体 (ASGPR) 和人类碳酸无水酶II (hCAII) 等蛋白质的标记成为可能.
- 经过验证的探针制备,通过简单的离心法分离蛋白质,并通过酶,细胞和动物研究进行生物安全.
主要成果:
- 从复杂的生物样本中证明了PNA,ASGPR和hCAII的有效和选择性标记和分离.
- 在猪肉组织中成功标记了PNA,在小鼠中标记了ASGPR,证实了NIR光的组织透和体内适用性.
- 与紫外线相比,NIR光对酶活性造成的光损伤最小,UCNP探针的体外和体外生物安全性良好.
结论:
- 开发的NIR光驱动的基于UCNP的PAL方法提供了一种强大而通用的工具,用于研究联体蛋白相互作用和识别生物分子点.
- 这种方法显著改进了传统的PAL,通过实现高效的体内标签,增强组织透,并最大限度地减少光损伤.
- 基于UCNP的探针表现出卓越的生物安全性,为化学生物学和生物医学研究的先进应用铺平了道路.
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