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用N₃-基托克萨尔标记和MazF裂变检测FTO的电化学检测

Chen Chen¹, Mei Zhao¹, Jingyi Guo¹

¹School of Pharmaceutical Sciences, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (MOE), Wuhan University Wuhan 430071 China fwang@whu.edu.cn +86-27-68759850 +86-27-68759829.

|August 15, 2024

概括

我们开发了一种新的电化学方法来检测脂肪质量和与肥胖相关的蛋白质 (FTO),使用MazF裂变和信号放大. 这种方法准确量化FTO及其抑制剂,有助于研究肥胖,糖尿病和癌症.

科学领域:

生物化学生物化学
分子生物学分子生物学
分析化学分析化学

背景情况:

N6-Methyladenosine (m6A) 是一种关键的mRNA修饰,涉及到人类癌症.
脂肪质量和与肥胖相关的蛋白质 (FTO) 是一个关键的m6A脱甲基酶,调节生物过程和疾病.
准确的FTO检测对于临床和研究应用至关重要.

研究的目的:

开发一种敏感的电化学方法来检测FTO.
为了利用MazF内核酶和信号放大来提高检测.
评估FTO抑制剂的抑制作用.

主要方法:

电化学检测利用MazF酶的特定裂解特性.
使用斯特列塔维丁-马过氧化酶 (SA-HRP) 的信号放大.
可逆的瓜基标记与N3-基托克萨尔,然后是DBCO-PEG4-生物素结合.

主要成果:

在峰值电流和FTO度 (7.90 × 10^-8到3.50 × 10^-7 M) 之间观察到线性相关性.
该方法实现了FTO的5.80 × 10^-8 M的检测极限.
FTO抑制剂FB23显示IC50为54.73nM,与文献价值一致.

结论:

开发的电化学方法为FTO检测提供了灵敏和可靠的方法.
这种技术对于研究FTO相关疾病如肥胖,糖尿病和癌症是有价值的.
该方法有助于选针对FTO的潜在治疗药物.

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