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聚二甲基西洛 - 基于光探针在活细胞中检测H2S

Xuefeng Wang^1,2,3, Esteban Mejia⁴, Yujing Zuo^5,4

¹College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Shandong, 266071, China.

Journal of fluorescence

|October 16, 2024

概括

研究人员开发了一种新型的光探针,使用聚甲基 (PDMS) 来检测活细胞中的硫化 (H2S). 这种新的探测器,P-NBD,提供H2S的敏感和视觉检测,使细胞成像应用.

科学领域:

生物化学生物化学
材料科学材料科学材料科学
化学生物学化学生物学

背景情况:

硫化 (H2S) 是生物系统中至关重要的信号分子,需要敏感的检测方法.
聚甲基酸盐 (PDMS) 为开发光探针提供了多功能和生物相容的支架,但它们用于H2S检测的应用仍然未被探索.
4-nitro-2,1,3-benzoxadiazole (NBD) 衍生物以其出色的光特性和环境敏感性而闻名,使其适合于探针设计.

研究的目的:

设计和合成一种新的光探针用于使用PDMS检测H2S.
调查探测器的性能,包括其检测极限和在细胞成像中的应用性.
探索基于PDMS的材料在先进生物传感器开发中的潜力.

主要方法:

一个新的H2S光探针P-NBD通过PDMS衍生物和Cl-NBD之间的一步核替代反应合成.
探测器的检测机制得到了阐明,涉及到裂变反应策略和分子内电荷转移.
使用色度测量方法评估了探测器的性能,并证明了它在HeLa细胞中用于H2S成像的实用性.

主要成果:

合成的P-NBD探头对H2S的检测极限很低,达到93nM.
P-NBD 证明了有效的色度检测 H2S,与现有的探测器相比.
在HeLa细胞中成功的H2S成像证实了探测器对生物应用的能力.

结论:

一种基于PDMS的新型光探测器 (P-NBD) 已成功开发用于敏感的H2S检测.
探测器利用独特的裂变反应和分子内电荷转移机制进行色度检测.
这项研究强调了PDMS作为光探针的支架的潜力,并证明了其在细胞H2S成像中的实用性.

关键词:

细胞成像细胞成像光探测器探测器可以发光.硫化检测检测硫化检测这是一个基于PDMS的传感器.

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