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Background <p>Exosome Lnc A2M-AS1 from olfactory mucosa mesenchymal stem cells (OM-MSCs) can ameliorate oxidative stress by improving mitophagy in cardiomuscular cells; however, it remains unclear whether this effect exists in the brain tissues of patients with Parkinson’s disease (PD).</p> Methods <p>OM-MSC–Exosomes were isolated and verified based on morphology and specific biomarkers. The effects of OM-MSC-Exo on mitochondrial autophagy, oxidative stress, and lncRNA A2M-AS1 were detected in MPP<sup>+</sup>-treated HT22 cells. The effects of OM-MSC-Exos on mitochondrial autophagy and oxidative stress were detected in an MPTP-induced Parkinson's disease (PD) model in C57BL/6 mice. The interaction between IGF2BP1, A2M-AS1, and TP53INP1 was assessed via RNA pull-down/RNA Immunoprecipitation and RNA stability assays. The effects of lnc A2M-AS1 on IGF2BP1/TP53INP1-mediated mitochondrial autophagy and oxidative stress were verified in MPP<sup>+</sup>-treated HT22 cells and MPTP-induced PD mouse models.</p> Results <p>Exosomes isolated from olfactory mucosa mesenchymal stem cells were found to be rich in Lnc A2M-AS1. Lnc A2M-AS1 was proved to be able to ameliorate oxidative stress induced by MPP<sup>+</sup> in HT22 cells. lncRNA A2M-AS1 regulates oxidative stress by enhancing mitophagy in HT22 cells. In addition, lncRNA A2M-AS1 induced mitophagy through TP53INP1 and mediated TP53INP1 expression by binding to IGF2BP1. Furthermore, OM-MSC-Exo and Lnc A2M-AS1 treatment improved symptoms and ameliorated oxidative stress in MPTP-induced PD mouse models.</p> Conclusion <p>Collectively, lncRNA A2M-AS1 from OM-MSC-derived exosomes regulates TP53INP1 expression by targeting IGF2BP1 to induce mitophagy and ameliorate oxidative stress. OM-MSC-derived exosomes could potentially serve as promising candidates for new treatment methods for PD.</p> Graphical Abstract <p></p>

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Olfactory mucosal mesenchymal stem cell-derived exosome Lnc A2M-AS1 ameliorates oxidative stress by regulating TP53INP1-mediated mitochondrial autophagy through interacting with IGF2BP1 in Parkinson’s diseases

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月20日

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  • Jiangshan Zhang,
  • Chuang Wang,
  • Guoshuai Yang,
  • Yanhui Zhou,
  • Dan Hou,
  • Ying Xia

摘要

Background

Exosome Lnc A2M-AS1 from olfactory mucosa mesenchymal stem cells (OM-MSCs) can ameliorate oxidative stress by improving mitophagy in cardiomuscular cells; however, it remains unclear whether this effect exists in the brain tissues of patients with Parkinson’s disease (PD).

Methods

OM-MSC–Exosomes were isolated and verified based on morphology and specific biomarkers. The effects of OM-MSC-Exo on mitochondrial autophagy, oxidative stress, and lncRNA A2M-AS1 were detected in MPP+-treated HT22 cells. The effects of OM-MSC-Exos on mitochondrial autophagy and oxidative stress were detected in an MPTP-induced Parkinson's disease (PD) model in C57BL/6 mice. The interaction between IGF2BP1, A2M-AS1, and TP53INP1 was assessed via RNA pull-down/RNA Immunoprecipitation and RNA stability assays. The effects of lnc A2M-AS1 on IGF2BP1/TP53INP1-mediated mitochondrial autophagy and oxidative stress were verified in MPP+-treated HT22 cells and MPTP-induced PD mouse models.

Results

Exosomes isolated from olfactory mucosa mesenchymal stem cells were found to be rich in Lnc A2M-AS1. Lnc A2M-AS1 was proved to be able to ameliorate oxidative stress induced by MPP+ in HT22 cells. lncRNA A2M-AS1 regulates oxidative stress by enhancing mitophagy in HT22 cells. In addition, lncRNA A2M-AS1 induced mitophagy through TP53INP1 and mediated TP53INP1 expression by binding to IGF2BP1. Furthermore, OM-MSC-Exo and Lnc A2M-AS1 treatment improved symptoms and ameliorated oxidative stress in MPTP-induced PD mouse models.

Conclusion

Collectively, lncRNA A2M-AS1 from OM-MSC-derived exosomes regulates TP53INP1 expression by targeting IGF2BP1 to induce mitophagy and ameliorate oxidative stress. OM-MSC-derived exosomes could potentially serve as promising candidates for new treatment methods for PD.

Graphical Abstract