中国神经再生研究(英文版) ›› 2024, Vol. 19 ›› Issue (8): 1849-1856.doi: 10.4103/1673-5374.389646

• 原著:视神经损伤修复保护与再生 • 上一篇    

对氨基苯甲酸激活斑马鱼 损伤视网膜中 Ascl1a 的表达促进视网膜再生

  

  • 出版日期:2024-08-15 发布日期:2024-01-03
  • 基金资助:
    国家自然科学基金项目;国家重点研发计划项目;湖南省自然科学基金项目

P-aminobenzoic acid promotes retinal regeneration through activation of Ascl1a in zebrafish

Meihui He1, 2, 3, Mingfang Xia1, 2, 3, Qian Yang1, 2, 3, Xingyi Chen1, 2, 3, Haibo Li1, 2, 3, *, Xiaobo Xia1, 2, 3, *   

  1. 1Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan Province, China; 2Hunan Key Laboratory of Ophthalmology, Changsha, Hunan Province, China; 3National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
  • Online:2024-08-15 Published:2024-01-03
  • Contact: Xiaobo Xia, MD, xbxia21@163.com; Haibo Li, PhD, lihaibo@csu.edu.cn.
  • Supported by:
    This work was supported by the National Natural Science Foundation of China, Nos. 81974134 (to XX) and 82000895 (to HL); National Key Research and Development Program of China, Nos. 2021YFA1101200 & 2021YFA1101202; and National Natural Science Foundation of Hunan Province, China, No. 2022JJ30071 (to HL).

摘要:

多项研究表明,视网膜损伤期间会发生新陈代谢改变,但尚未发现新陈代谢物质与斑马鱼 Müller 胶质重编程和增殖之间存在联系。重要的是,目前还没有研究确定对氨基苯甲酸是否调节 Müller 胶质重编程和 Muller胶质细胞来源的祖细胞增殖。实验通过代谢组测序发现,在N-甲基-D-天冬氨酸损伤的斑马鱼视网膜中,对氨基苯甲酸含量显著下降。实验进步研究了对氨基苯甲酸在成年斑马鱼视网膜再生中的作用,发现对氨基苯甲酸能促进Müller胶质细胞的重编程和分裂,以及Müller胶质细胞衍生祖细胞的增殖,从而通过激活Ascl1a的表达促进视网膜再生。最后,实验排除了对氨基苯甲酸通过下游合成产物叶酸和炎症通路发挥作用的可能,证明对氨基苯甲酸对Müller胶质细胞分布的影响很小。这些发现共同表明,对氨基苯甲酸通过激活斑马鱼N-甲基-D-天冬氨酸损伤视网膜中 Ascl1a 的表达促进视网膜再生。

https://orcid.org/0000-0003-1720-7860 (Xiaobo Xia); https://orcid.org/0000-0002-6969-9775 (Haibo Li)

Abstract: The retina of zebrafish can regenerate completely after injury. Multiple studies have demonstrated that metabolic alterations occur during retinal damage; however to date no study has identified a link between metabolites and retinal regeneration of zebrafish. Here, we performed an unbiased metabolome sequencing in the N-methyl-D-aspartic acid-damaged retinas of zebrafish to demonstrate the metabolomic mechanism of retinal regeneration. Among the differentially-expressed metabolites, we found a significant decrease in p-aminobenzoic acid in the N-methyl-D-aspartic acid-damaged retinas of zebrafish. Then, we investigated the role of p-aminobenzoic acid in retinal regeneration in adult zebrafish. Importantly, p-aminobenzoic acid activated Achaetescute complex-like 1a expression, thereby promoting Müller glia reprogramming and division, as well as Müller glia-derived progenitor cell proliferation. Finally, we eliminated folic acid and inflammation as downstream effectors of PABA and demonstrated that PABA had little effect on Müller glia distribution. Taken together, these findings show that PABA contributes to retinal regeneration through activation of Achaetescute complex-like 1a expression in the N-methyl-D-aspartic acid-damaged retinas of zebrafish. 

Key words: Achaetescute complex-like 1a (Ascl1a), metabolomics, Müller glia, p-aminobenzoic acid (PABA), retina, regeneration, zebrafish