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YGold nanoflowers modified ITO glass as SERS substrate for carbon tetrachloride-induced acute liver injury in vitro detection

机译:YGold纳米花修饰ITO玻璃作为SERS底物用于四氯化碳诱导的急性肝损伤的体外检测

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摘要

For the sensitive and convenient detection of acute liver injury, several methods and materials have been developed. However, it is still a challenge to obtain sensitive, simple detection techniques for acute liver injury. Here, based on a gold nanoflowers (GNFs) modified substrate and 6-mercaptopurine (6-MP) as a surface-enhanced Raman scattering (SERS) signal molecule, a novel method was developed for monitoring carbon tetrachloride (CCl4)-induced acute liver injury of mice. Glutathione (GSH)-triggered and glutathione-s-transferase (GST)-accelerated the turn-off SERS behavior of 6-MP was studied on the GNFs substrate. We found that GSH-triggered GST-accelerated turn-off behavior of 6-MP on the GNFs substrate surface in buffer systems. In CCl4-induced acute liver injury mice tissue extracts without adding GST, the turn-off behavior of 6-MP was also accelerated, the detection intensity from 105 down to 10(3) counts for 6-MP. The SERS results confirmed that GNFs substrate exhibited strong SERS signal intensity, excellent stability in complex biological environment and detection clinical sample. This study provides a new, rapid and sensitive approach for analysis of trace amounts detection based on SERS coupled with GNFs substrate, which has great potential for analysis of surface chemical properties indicating its potential applicability in biological and biomedical research.
机译:为了灵敏和方便地检测急性肝损伤,已经开发了几种方法和材料。然而,获得灵敏,简单的急性肝损伤检测技术仍然是一个挑战。在此,基于金纳米花(GNFs)修饰的底物和6-巯基嘌呤(6-MP)作为表面增强拉曼散射(SERS)信号分子,开发了一种监测四氯化碳(CCl4)诱导的急性肝脏的新方法老鼠的伤害。在GNFs底物上研究了谷胱甘肽(GSH)触发和谷胱甘肽S-转移酶(GST)加速6-MP的关闭SERS行为。我们发现缓冲系统中GSH触发了GMP加速的6-MP在GNFs基质表面上的关闭行为。在不添加GST的CCl4诱导的急性肝损伤小鼠组织提取物中,6-MP的关闭行为也被加速,6-MP的检测强度从105降低到10(3)计数。 SERS结果证实,GNFs底物表现出很强的SERS信号强度,在复杂的生物环境和临床样品检测中具有出色的稳定性。这项研究为基于SERS和GNFs底物的痕量检测分析提供了一种新的,快速而灵敏的方法,该方法在分析表面化学性质方面具有巨大潜力,表明其在生物学和生物医学研究中的潜在适用性。

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