Scholarlink

<p>Amyotrophic lateral sclerosis (ALS) is a swiftly progressive and fatal neurodegenerative ailment marked by the degenerative motor neurons (MNs). Why MNs are specifically susceptible in predominantly sporadic cases remains enigmatic. Here, we demonstrated N<sup>6</sup>-methyladenosine (m<sup>6</sup>A), an RNA modification catalyzed by the METTL3/METTL14 methyltransferase complex, as a pivotal contributor to ALS pathogenesis. By conditional knockout <i>Mettl14</i> in murine MNs, we recapitulate almost the full spectrum of ALS disease characteristics. Mechanistically, pervasive m<sup>6</sup>A hypomethylation triggers dysregulated expression of high-risk genes associated with ALS and an unforeseen reduction of chromatin accessibility in MNs. Additionally, we observed diminished m<sup><i>6</i></sup>A levels in induced pluripotent stem cell&#xa0;derived MNs&#xa0;(iPSC~MNs) from familial and sporadic ALS patients. Restoring m<sup>6</sup>A equilibrium via a small molecule or gene therapy significantly preserves MNs from degeneration and mitigates motor impairments in ALS iPSC~MNs and murine models. Our study presents a substantial stride towards identifying pioneering efficacious ALS therapies via RNA modifications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The motor neuron m6A repertoire governs neuronal homeostasis and FTO inhibition mitigates ALS symptom manifestation

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月30日

查看全文
  • Ya-Ping Yen,
  • Ting-Hsiang Lung,
  • Ee Shan Liau,
  • Chuan-Che Wu,
  • Guan-Lin Huang,
  • Fang-Yu Hsu,
  • Mien Chang,
  • Zheng-Dao Yang,
  • Chia-Yi Huang,
  • Zhong Zheng,
  • Wei Zhao,
  • Jui-Hung Hung,
  • Chuan He,
  • Qing Nie,
  • Jun-An Chen

摘要

Amyotrophic lateral sclerosis (ALS) is a swiftly progressive and fatal neurodegenerative ailment marked by the degenerative motor neurons (MNs). Why MNs are specifically susceptible in predominantly sporadic cases remains enigmatic. Here, we demonstrated N6-methyladenosine (m6A), an RNA modification catalyzed by the METTL3/METTL14 methyltransferase complex, as a pivotal contributor to ALS pathogenesis. By conditional knockout Mettl14 in murine MNs, we recapitulate almost the full spectrum of ALS disease characteristics. Mechanistically, pervasive m6A hypomethylation triggers dysregulated expression of high-risk genes associated with ALS and an unforeseen reduction of chromatin accessibility in MNs. Additionally, we observed diminished m6A levels in induced pluripotent stem cell derived MNs (iPSC~MNs) from familial and sporadic ALS patients. Restoring m6A equilibrium via a small molecule or gene therapy significantly preserves MNs from degeneration and mitigates motor impairments in ALS iPSC~MNs and murine models. Our study presents a substantial stride towards identifying pioneering efficacious ALS therapies via RNA modifications.