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对胺合成酶2无基因小鼠的深度脂组和代谢组分析揭示了复杂的途径特异性影响

Jeongah Oh¹, Sneha Muralidharan¹, Qing Zhao²

¹Precision Medicine Translational Research Programme and Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; SLING, Singapore Lipidomics Incubator, Life Sciences Institute, National University of Singapore, Singapore.

Journal of lipid research

|May 31, 2025

概括

在小鼠中删除胺合成酶2 (CerS2) 改变了成千上万的脂 (SL) 物种在整个组织中. 这项研究揭示了复杂的脂质组和代谢组变化,影响了多个代谢途径并突出了SL连接.

科学领域:

利皮多米克 (Lipidomics) 是一种消化剂.
生物化学生物化学
代谢学代谢学代谢学

背景情况:

脂体包括数千种不同的脂体 (SL) 物种,由长链基 (LCB),N-链和头组的变化产生的.
哺乳动物的LCBs被六个胺合成酶 (CerS1-6) N-化成二胺 (DHCer),CerS2专门合成非常长链二胺.

研究的目的:

在18个组织中全面分析野生类型 (WT) 和CerS2-null小鼠的脂体.
建立一个广泛的SL组织地图,并确定CerS2缺乏的小鼠中意想不到的代谢变化.

主要方法:

从WT和CerS2无细胞小鼠的18种不同的组织中对259个单独的脂类物种进行定量分析.
代谢分析,以评估更广泛的代谢途径的变化.

主要成果:

建立了一个详细的SL组织图谱,用于WT和CerS2无细胞小鼠.
观察到组织特异性变化,包括大脑中的胺1-酸盐减少和CerS2无细胞小鼠肺中的C26-SL增加.
在至少六个主要的代谢途径中发现了显著的变化,证明了与SL代谢的相互联系.

结论:

消耗CerS2导致脂质组和代谢组的复杂,广泛的变化.
脂体与众多代谢途径密切相关.
建议在直接将特定的SL物种与由于系统代谢影响导致的组织病理相关联时谨慎使用.

关键词:

陶化物是一种陶.胺1-酸盐是一种酸盐.脑酸是大脑酸的一种.葡萄糖脂类的葡萄糖脂类.质谱测量质谱测量质谱测量质谱测量质量测量质谱测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量斯芬戈利皮多米克斯 (Sphingolipidomics) 是一种脂体是指脂体的组成部分.基氨酸的作用是什么?

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