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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1华北理工大学附属医院呼吸与危重症医学科,河北 唐山 063000 ; 2.自贡市第一人民医院呼吸与危重症医学科,四川 自贡 643000 ; 3.华北理工大学附属医院CT室,4重症医学科,5微生物室,6麻醉科,河北 唐山 063000

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唐山市人才资助项目(C202303026)


Combined analysis of scRNAseq and Bulk RNAseq revealed that MTRNR2L1 mediated the downregulation of PANoptosis in COPD
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1Department of Respiratory and Critical Care Medicine,North China University of Science and Technology AffiliatedHospital,Tangshan 063000 ; 2.Department of Respiratory and Critical Care Medicine,Zigong First People’s Hospital,Zigong, 643000 ; 3.Department of CT Lab,4Department of Intensive Care Unit,5Department of Clinical MicrobiologyLaboratory,6Department of Anesthesiology,North China University of Science and Technology Affiliated Hospital,Tangshan 063000 ,China

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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(MT- RNR2 like protein 1,MTRNR2L1)介导的泛凋亡(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变化。scRNA-Seq证实与对照组相比,COPD组的CD8+ T细胞数减少,上皮细胞数增加;MTRNR2L1在COPD患者的免疫细胞和上皮细胞中表达水平上调;COPD患者肺组织、CD8+ T 细胞和上皮细胞中的 PANoptosis 相关基因表达水平降低。暴露于烟雾/LPS的小鼠肺表现出肺泡损伤、PANoptosis 蛋白表达上调,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PANoptosis参与 COPD 的发生发展,COPD 发病过程中PANoptosis与PANoptosis蛋白表达增高相关,MTRNR2L1对PANoptosis有抑制作用,调节PANopto- sis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 analyze the pathways involved in the development of the disease. PANoptosis was simulated in smoke/lipopolysaccharide(LPS)-exposed mice,and MTRNR2L1 and PANoptosis protein expression levels were assessed to clarify their roles in the development of COPD. Results:Bulk RNA -seq demonstrated the altered expression of T cell response - related genes between the COPD patients and the normal controls. scRNA-seq confirmed decreased CD8+ T cells and increased epithelial cells in the COPD patients compared with controls. MTRNR2L1 was upregulated in COPD patient immune and epithelial cells,then those of controls PANoptosis-related genes were reduced in lungs, CD8 + T cells and epithelial cells of COPD patients then those of controls:Smoke/LPS-exposed mouse lungs exhibit alveolar damage, increased expression of PANoptosis-related 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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戈艳蕾,孙思怡,任泓沁,姚雪鑫,赵倩,李文强,陈伟彬,白静,喻昌利,董爱英,刘铁军,付爱双. scRNA⁃seq和Bulk RNA⁃seq联合分析揭示MTRNR2L1介导COPD进展中PANoptosis下调[J].南京医科大学学报(自然科学版),2025,(6):786-797

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  • 收稿日期:2024-07-10
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  • 在线发布日期: 2025-06-10
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