1463-环状RNA circFCHO2调控PTBP1促进慢阻肺气道重塑研究 episode artwork

EPISODE · Aug 20, 2026 · 28 MIN

1463-环状RNA circFCHO2调控PTBP1促进慢阻肺气道重塑研究

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这项研究揭示了环状RNA circFCHO2在慢性阻塞性肺疾病(COPD)气道重塑中的关键致病作用。实验表明,该分子在COPD患者及模型动物中显著上调,通过诱导上皮-间质转化(EMT)和细胞外基质(ECM)重构,加速病情恶化。作用机制上,circFCHO2促进剪接因子PTBP1进入细胞核,抑制GRN前体mRNA的正常剪接,进而降低PGRN蛋白的表达与分泌。这种蛋白缺失激活了NF-κB信号通路,最终导致肺部结构损伤和气流受阻。研究最后指出,敲降circFCHO2能有效缓解小鼠的肺气肿症状,为COPD的临床治疗提供了潜在的新靶点。References:Liu Y, Wang Y, Fei Y, et al. Circular RNA FCHO2 promotes airway remodeling in COPD via regulating nuclear translocation of PTBP1 to repress the splicing of GRN pre-mRNA[J]. Cell Death & Disease, 2025, 16(1): 779.前往小宇宙评论区与主播互动

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1463-环状RNA circFCHO2调控PTBP1促进慢阻肺气道重塑研究

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