Single-cell atlas of the human neonatal small intestine affected by necrotizing enterocolitis.

Single-cell atlas of the human neonatal small intestine affected by necrotizing enterocolitis.
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受坏死性小肠结肠炎影响的人类新生儿小肠的单细胞图谱。

DOI:
10.1371/journal.pbio.3002124
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发表时间:
2023-05
期刊:
影响因子:
9.8
通讯作者:
--
中科院分区:
生物学1区
文献类型:
--
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坏死性小肠结肠炎(NEC)是早产儿的一种胃肠道并发症,具有较高的发病率和死亡率。缺乏对NEC的细胞变化和异常相互作用的全面认识。本研究旨在填补这一空白。我们结合联合收割机单细胞RNA测序(scRNAseq)、T细胞受体β(TCRβ)分析、批量转录组学和成像来表征NEC中的细胞身份、相互作用和带状变化。我们发现大量的促炎性巨噬细胞、成纤维细胞、内皮细胞以及T细胞表现出增加的TCRβ克隆扩增。NEC中绒毛尖端上皮细胞减少,其余上皮细胞上调促炎基因。我们建立了一个详细的地图异常上皮间充质免疫相互作用,与炎症在NEC粘膜。我们的分析强调了NEC相关肠组织的细胞失调,并确定了生物标志物发现和治疗的潜在靶点。该手稿展示了人类新生儿和坏死性小肠结肠炎影响的小肠组织的单细胞图谱,揭示了这种疾病中发生的细胞失调,并确定了未来生物标志物和治疗研究的新靶点。
Necrotizing enterocolitis (NEC) is a gastrointestinal complication of premature infants with high rates of morbidity and mortality. A comprehensive view of the cellular changes and aberrant interactions that underlie NEC is lacking. This study aimed at filling in this gap. We combine single-cell RNA sequencing (scRNAseq), T-cell receptor beta (TCRβ) analysis, bulk transcriptomics, and imaging to characterize cell identities, interactions, and zonal changes in NEC. We find an abundance of proinflammatory macrophages, fibroblasts, endothelial cells as well as T cells that exhibit increased TCRβ clonal expansion. Villus tip epithelial cells are reduced in NEC and the remaining epithelial cells up-regulate proinflammatory genes. We establish a detailed map of aberrant epithelial–mesenchymal–immune interactions that are associated with inflammation in NEC mucosa. Our analyses highlight the cellular dysregulations of NEC-associated intestinal tissue and identify potential targets for biomarker discovery and therapeutics. The manuscript presents a single cell atlas of human neonatal and necrotizing enterocolitis-affected small intestinal tissue, revealing cellular dysregulation that occurs in this disease and identifying new targets for future biomarker and therapeutic studies.
线虫性小肠结肠炎发病机理中的先天免疫信号传导。
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