ACS nano · 2025
Metabolic Reprogramming of Neural Stem Cells by Chiral Nanofiber for Spinal Cord Injury.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Wu Haining, Xing Chao, Yu Beibei, Guo Lingli, Dou Xiaoqiu, Gao Laiben, Yang Shijie, Zhang Yongfeng, Gao Xue, Li Shengyou, Xia Bing, Ma Teng, Hao Yiming, Yang Yujie, Gao Xueli, Wei Yitao, Xue Borui, Zhang Qing, Feng Chuan-Liang, Huang Jinghui
Аннотация
Exogenous neural stem cells (NSCs) have great potential to reconstitute damage spinal neural circuitry. However, regulating the metabolic reprogramming of NSCs for reliable nerve regeneration has been challenging. This report discusses the biomimetic dextral hydrogel (DH) with right-handed nanofibers that specifically reprograms the lipid metabolism of NSCs, promoting their neural differentiation and rapid regeneration of damaged axons. The underlying mechanism is the intrinsic stereoselectivity between DH and fatty acid-binding protein 5 (FABP5), which facilitates the transportation of fatty acids bound to FABP5 into the mitochondria and endoplasmic reticulum, subsequently augmenting fatty acid oxidation (FAO) levels and enriching sphingosine biosynthesis. In the rat SCI model, DH significantly improved the Basso-Beattie-Bresnahan (BBB) locomotor scores (over 3-fold) and the hindlimbs' compound muscle action potential (over 4-fold) compared with the untreated group, conveying a significant return of functional recovery. This finding of nanoscale chirality-dependent NSCs metabolic reprogramming provides insights into understanding stem cell physiology and presents opportunities for regenerative medicine.