Nicotinamide Riboside Promotes the Proliferation of Endogenous Neural Stem Cells to Repair Spinal Cord Injury.

IF 4.5 3区 医学 Q2 CELL & TISSUE ENGINEERING
Stem Cell Reviews and Reports Pub Date : 2024-10-01 Epub Date: 2024-06-28 DOI:10.1007/s12015-024-10747-x
Jianping Zhang, Jun Shang, Han Ding, Wenxiang Li, Zonghao Li, Zhongze Yuan, Han Zheng, YongFu Lou, Zhijian Wei, Hengxing Zhou, Shiqing Feng, Xiaohong Kong, Ning Ran
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Abstract

Activation of endogenous neural stem cells (NSC) is one of the most potential measures for neural repair after spinal cord injury. However, methods for regulating neural stem cell behavior are still limited. Here, we investigated the effects of nicotinamide riboside promoting the proliferation of endogenous neural stem cells to repair spinal cord injury. Nicotinamide riboside promotes the proliferation of endogenous neural stem cells and regulates their differentiation into neurons. In addition, nicotinamide riboside significantly restored lower limb motor dysfunction caused by spinal cord injury. Nicotinamide riboside plays its role in promoting the proliferation of neural stem cells by activating the Wnt signaling pathway through the LGR5 gene. Knockdown of the LGR5 gene by lentivirus eliminates the effect of nicotinamide riboside on the proliferation of endogenous neural stem cells. In addition, administration of Wnt pathway inhibitors also eliminated the proliferative effect of nicotinamide riboside. Collectively, these findings demonstrate that nicotinamide promotes the proliferation of neural stem cells by targeting the LGR5 gene to activate the Wnt pathway, which provides a new way to repair spinal cord injury.

Abstract Image

烟酰胺核苷促进内源性神经干细胞增殖以修复脊髓损伤
激活内源性神经干细胞(NSC)是脊髓损伤后神经修复最有潜力的措施之一。然而,调节神经干细胞行为的方法仍然有限。在这里,我们研究了烟酰胺核糖促进内源性神经干细胞增殖对脊髓损伤修复的影响。烟酰胺核糖甙能促进内源性神经干细胞增殖,并调节其分化为神经元。此外,烟酰胺核糖甙还能显著恢复脊髓损伤引起的下肢运动功能障碍。烟酰胺核糖甙通过 LGR5 基因激活 Wnt 信号通路,从而起到促进神经干细胞增殖的作用。通过慢病毒敲除 LGR5 基因可消除烟酰胺核糖苷对内源性神经干细胞增殖的影响。此外,服用Wnt通路抑制剂也会消除烟酰胺核糖苷的增殖效应。这些研究结果综合证明,烟酰胺通过靶向LGR5基因激活Wnt通路促进神经干细胞增殖,为脊髓损伤的修复提供了一条新途径。
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来源期刊
Stem Cell Reviews and Reports
Stem Cell Reviews and Reports 医学-细胞生物学
CiteScore
9.30
自引率
4.20%
发文量
0
审稿时长
3 months
期刊介绍: The purpose of Stem Cell Reviews and Reports is to cover contemporary and emerging areas in stem cell research and regenerative medicine. The journal will consider for publication: i) solicited or unsolicited reviews of topical areas of stem cell biology that highlight, critique and synthesize recent important findings in the field. ii) full length and short reports presenting original experimental work. iii) translational stem cell studies describing results of clinical trials using stem cells as therapeutics. iv) papers focused on diseases of stem cells. v) hypothesis and commentary articles as opinion-based pieces in which authors can propose a new theory, interpretation of a controversial area in stem cell biology, or a stem cell biology question or paradigm. These articles contain more speculation than reviews, but they should be based on solid rationale. vi) protocols as peer-reviewed procedures that provide step-by-step descriptions, outlined in sufficient detail, so that both experts and novices can apply them to their own research. vii) letters to the editor and correspondence. In order to facilitate this exchange of scientific information and exciting novel ideas, the journal has created five thematic sections, focusing on: i) the role of adult stem cells in tissue regeneration; ii) progress in research on induced pluripotent stem cells, embryonic stem cells and mechanism governing embryogenesis and tissue development; iii) the role of microenvironment and extracellular microvesicles in directing the fate of stem cells; iv) mechanisms of stem cell trafficking, stem cell mobilization and homing with special emphasis on hematopoiesis; v) the role of stem cells in aging processes and cancerogenesis.
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