ALKBH3-AS1通过YTHDF2驱动SMAD3稳定:揭示了SLE中Th17失调的病原性途径
Yanli Zhang1, Yu Zhen2, Zhanchuan Ma3
1Central Laboratory, Lequn Branch, The First Hospital of Jilin University, Changchun, Jilin, China; Department of Echocardiography, Ultrasound Diagnostic Center, The First Hospital of Jilin University, Changchun, Jilin, China; Key Laboratory of Organ Regeneration and Transplantation, Ministry of Education, Changchun, Jilin, China.
Pharmacological research
|October 14, 2025
概括
一种长长的非编码RNA,ALKBH3-AS1,可以调节神经元衍生抑制细胞介导的Th17细胞在全身性红斑狼 (SLE) 中的分化. ALKBH3-AS1作为SLE和狼性炎 (LN) 的治疗标.
科学领域:
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
背景情况:
- Th17细胞和IL-17A是系统性红斑狼 (SLE) 和狼性炎 (LN) 的关键驱动因素.
- 骨髓衍生抑制细胞 (MDSC) 促进Th17细胞分化,但潜在的表观遗传机制尚不清楚.
研究的目的:
- 研究长非编码RNAALKBH3-AS1在MDSC介导的Th17细胞分化中的作用.
- 探索ALKBH3-AS1作为SLE和LN的潜在治疗点.
主要方法:
- 对与MDSCs共同培养的Th17细胞中ALKBH3-AS1表达的分析.
- 在SLE患者的PBMC中,ALKBH3-AS1水平与疾病严重程度的相关性分析.
- 在体外和体内研究涉及ALKBH3-AS1/Alkbh3os1过度表达和淘汰.
- 关于ALKBH3-AS1与SMAD3 mRNA和YTHDF2.2相互作用的机制研究.
主要成果:
- 在Th17+MDSC共同培养物中,ALKBH3-AS1表达被抑制,通过阿基因酶抑制得到拯救.
- 在SLE患者中降低的ALKBH3-AS1水平与疾病严重程度和Th17细胞百分比有负相关性.
- 过度表达ALKBH3-AS1抑制了TGF-β/SMAD信号传递和Th17分化;倒置具有相反的效果.
- ALKBH3-AS1将SMAD3mRNA招募到YTHDF2中,从而促进SMAD3的衰变.
- 在体内,alkbh3os1过度表达改善了LN病理.
结论:
- ALKBH3-AS1是Th17细胞驱动的自身免疫的关键表观遗传调节剂.
- ALKBH3-AS1的目标是通过YTHDF2介导的SMAD3降解.
- ALKBH3-AS1代表了SLE和LN的新型治疗标.
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