Single-nuclei RNA-seq reveals skin cell responses to Aeromonas hydrophila infection in Chinese longsnout catfish Leiocassis longirostris
文献类型: 外文期刊
作者: Mou, Cheng-Yan 1 ; Zhang, Lu 1 ; Zhao, Han 1 ; Huang, Zhi-Peng 1 ; Duan, Yuan-Liang 1 ; Zhao, Zhong-Meng 1 ; Ke, Hong-Yu 1 ; Du, Jun 1 ; Li, Qiang 1 ; Zhou, Jian 1 ;
作者机构: 1.Sichuan Acad Agr Sci, Fisheries Res Inst, Chengdu, Sichuan, Peoples R China
关键词: single nuclei RNA-sequencing; fish skin cell; immune response; Aeromonas hydrophila; cell expansion
期刊名称:FRONTIERS IN IMMUNOLOGY ( 影响因子:7.3; 五年影响因子:8.0 )
ISSN: 1664-3224
年卷期: 2023 年 14 卷
页码:
收录情况: SCI
摘要: As the primary natural barrier that protects against adverse environmental conditions, the skin plays a crucial role in the innate immune response of fish, particularly in relation to bacterial infections. However, due to the diverse functionality and intricate anatomical and cellular composition of the skin, deciphering the immune response of the host is a challenging task. In this study, single nuclei RNA-sequencing (snRNA-seq) was performed on skin biopsies obtained from Chinese longsnout catfish (Leiocassis longirostris), comparing Aeromonas hydrophila-infected subjects to healthy control subjects. A total of 19,581 single nuclei cells were sequenced using 10x Genomics (10,400 in the control group and 9,181 in the treated group). Based on expressed unique transcriptional profiles, 33 cell clusters were identified and classified into 12 cell types including keratinocyte (KC), fibroblast (FB), endothelial cells (EC), secretory cells (SC), immune cells, smooth muscle cells (SMC), and other cells such as pericyte (PC), brush cell (BC), red blood cell (RBC), neuroendocrine cell (NDC), neuron cells (NC), and melanocyte (MC). Among these, three clusters of KCs, namely, KC1, KC2, and KC5 exhibited significant expansion after A. hydrophila infection. Analysis of pathway enrichment revealed that KC1 was primarily involved in environmental signal transduction, KC2 was primarily involved in endocrine function, and KC5 was primarily involved in metabolism. Finally, our findings suggest that neutrophils may play a crucial role in combating A. hydrophila infections. In summary, this study not only provides the first detailed comprehensive map of all cell types present in the skin of teleost fish but also sheds light on the immune response mechanism of the skin following A. hydrophila infection in Chinese longsnout catfish.
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