scRNA-seq和bulk RNA-seq联合分析揭示MTRNR2L1介导COPD进展中PANoptosis下调
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华北理工大学附属医院

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唐山市人才资助项目(编号:C202303026);华北理工大学基础科研业务项目(编号:JQN2022019);2023年河北省研究生创新能力培训资助项目(编号:CXZZSS2023075)


Combined analysis of scRNA-seq and bulk RNA-seq evealed that MTRNR2L1 mediated the downregulation of PANoptosis in COPD
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Tangshan Talent Funding Project (No. C202303026),Basic Scientific Research Business Project Of North China University Of Science And Technology (No. JQN2022019), The 2023 Hebei Postgraduate Innovation Ability Training Funding Project (No. CXZZSS2023075).

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    摘要:

    目的:探讨慢性阻塞性肺疾病(Chronic Obstructive Pulmonary Disease,COPD)发展过程中MT-RNR2样蛋白1(MTRNR2L1)介导的PANoptosis调控机制,为寻找 COPD 发病机制提供新思路。方法:通过基因表达综合数据库(Gene Expression Omnibus,GEO)中COPD患者的批量RNA测序(Bulk RNA Sequencing,Bulk RNA-seq)数据和单细胞RNA测序(Single Cell RNA Sequencing,scRNA-Seq)数据探究COPD患者肺组织中细胞构成,并分析细胞参与疾病发生的相关通路。在烟雾/脂多糖(Lipopolysaccharide,LPS)暴露的小鼠中模拟PANoptosis,评估MTRNR2L1和PANoptosis蛋白表达情况,明确其在COPD发生发展中的作用;结果:Bulk RNA-seq显示COPD患者T细胞反应相关基因的表达改变。scRNA-Seq证实与对照组相比,COPD组的CD8+ T细胞减少,上皮细胞增加;MTRNR2L1在COPD患者的免疫细胞和上皮细胞中上调;COPD患者肺组织、CD8+ T 细胞和上皮细胞中的 PANoptosis 相关基因减少。暴露于烟雾/LPS的小鼠肺表现出肺泡损伤、PANoptosis蛋白表达增高,MTRNR2L1过表达显著抑制细胞PANoptosis并下调 ZBP1、Caspase-3、GSDMD 和 MLKL 的水平。结论:CD8+ T 细胞与上皮细胞的差异表达基因分别在泛凋亡相关通路富集,提示泛凋亡参与 COPD 的发生发展,COPD 的发生发展中的泛凋亡过程与PANoptosis蛋白表达增高有关,MTRNR2L1对PANoptosis有抑制作用,调节PANoptosis可能为减轻肺损伤和改善肺通气功能提供新的治疗机会。

    Abstract:

    Objective: To explore the mechanism of MT-RNR2-like protein 1 (MTRNR2L1)-mediated regulation of PANoptosis during the development of Chronic Obstructive Pulmonary Disease (COPD), and to provide new ideas for finding the pathogenesis of COPD. Methods: Bulk RNA Sequencing (Bulk RNA-seq) data and Single Cell RNA Sequencing (scRNA-Seq) data from COPD patients in Gene Expression Omnibus (GEO) were used to explore the cellular composition in COPD patients' lung tissues and to analyse the pathways involved in the development of the disease. PANoptosis was simulated in smoke/lipopolysaccharide (LPS)-exposed mice, and MTRNR2L1 and PANoptosis protein expression was assessed to clarify their roles in the development of COPD. Results: Bulk RNA-seq demonstrated altered expression of T cell response-related genes in COPD patients. Single-cell RNA-seq confirmed decreased CD8+ T cells and increased epithelial cells compared to controls. The anti-apoptotic gene MTRNR2L1 was upregulated in COPD patient immune and epithelial cells. PANoptosis-related genes were reduced in lungs, CD8+ T cells and epithelial cells of COPD patients; Smoke/LPS-exposed mouse lungs exhibit alveolar damage, increased PANoptosis proteins, while MTRNR2L1 overexpression significantly inhibited cellular PANoptosis and downregulated the levels of ZBP1, Caspase-3, GSDMD, and MLKL.Conclusion: The differentially expressed genes in CD8+ T cells and epithelial cells were enriched in pathways related to PANoptosis , suggesting the involvement of PANoptosis in the development of COPD. The process of PANoptosis in the onset and development of COPD was associated with increased expression of PANoptosis-related proteins. MTRNR2L1 exhibited an inhibitory effect on PANoptosis, and regulating PANoptosis may provide new therapeutic opportunities for reducing lung injury and improving lung ventilatory function.

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  • 收稿日期:2024-07-10
  • 最后修改日期:2025-02-15
  • 录用日期:2025-06-11
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