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定量蛋白质组学分析洞察皮质多糖生物合成

Chunhua Xu¹, Yifan Guo², Xiaoni Chen²

¹Department of Nephrology, Longgang District Central Hospital of Shenzhen, Shenzhen, Guangdong, China.

Applied biochemistry and biotechnology

|January 8, 2026

概括

这项研究确定了参与Cordyceps多糖生物合成的关键蛋白质,揭示了糖代谢,特别是银河糖代谢,在对数增长阶段对于生产这些生物活性化合物至关重要.

科学领域:

生物化学生物化学
分子生物学分子生物学
菌类学菌类学是指菌类学.

背景情况:

科迪塞普斯多糖具有显著的药理特性,包括免疫调节和抗瘤作用.
这些有价值的化合物的生物合成途径尚未完全理解.
阐明这些机制对于代谢调节和潜在应用至关重要.

研究的目的:

在Cordyceps多糖生物合成过程中识别差异表达蛋白 (DEP).
了解Cordyceps中多糖的产生背后的分子机制.
为Cordyceps多糖的代谢工程提供基础.

主要方法:

使用TMT标签的定量蛋白质组学来识别和量化1242个DEP.
在不同生长阶段进行比较蛋白质组分析.
生物信息注释DEP和KEGG路径分析.
定量PCR (qPCR) 用于验证蛋白质表达水平.

主要成果:

果多糖生物合成在对数增长阶段最活跃,糖代谢途径 (如银河糖代谢) 显著参与.
确定了具有甘氨基转移酶活性的关键DEP,在多糖合成中发挥着关键作用.
一些蛋白质,包括NOS,ID-RCD,Arp2,NAD-GDH,phaA,GGT,CYP53A1,LAD,lacZ和AAO,都显著上调.
lacZ基因,可能通过其糖系转移酶活性,成为生物合成的关键因素.
转录数据在很大程度上证实了蛋白质水平表达变化.

结论:

这项研究揭示了Cordyceps多糖生物合成的蛋白质景观.
它强调了糖代谢和特定的葡萄糖转移酶 (如与lacZ基因相关的) 在生产过程中的重要性.
这些发现为通过代谢调节优化Cordyceps多糖体生产提供了科学基础.

关键词:

科尔迪塞普斯的多糖类.生物合成生物合成中国毛虫真菌中国毛虫真菌这种植物是Cordyceps sinensis.基于TMT的定量蛋白质组学.

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