In:
PLOS Pathogens, Public Library of Science (PLoS), Vol. 17, No. 6 ( 2021-6-29), p. e1009665-
Abstract:
Viral nervous necrosis (VNN) is an acute and serious fish disease caused by nervous necrosis virus (NNV) which has been reported massive mortality in more than fifty teleost species worldwide. VNN causes damage of necrosis and vacuolation to central nervous system (CNS) cells in fish. It is difficult to identify the specific type of cell targeted by NNV, and to decipher the host immune response because of the functional diversity and highly complex anatomical and cellular composition of the CNS. In this study, we found that the red spotted grouper NNV (RGNNV) mainly attacked the midbrain of orange-spotted grouper ( Epinephelus coioides ). We conducted single-cell RNA-seq analysis of the midbrain of healthy and RGNNV-infected fish and identified 35 transcriptionally distinct cell subtypes, including 28 neuronal and 7 non-neuronal cell types. An evaluation of the subpopulations of immune cells revealed that macrophages were enriched in RGNNV-infected fish, and the transcriptional profiles of macrophages indicated an acute cytokine and inflammatory response. Unsupervised pseudotime analysis of immune cells showed that microglia transformed into M1-type activated macrophages to produce cytokines to reduce the damage to nerve tissue caused by the virus. We also found that RGNNV targeted neuronal cell types was GLU1 and GLU3, and we found that the key genes and pathways by which causes cell cytoplasmic vacuoles and autophagy significant enrichment, this may be the major route viruses cause cell death. These data provided a comprehensive transcriptional perspective of the grouper midbrain and the basis for further research on how viruses infect the teleost CNS.
Type of Medium:
Online Resource
ISSN:
1553-7374
DOI:
10.1371/journal.ppat.1009665
DOI:
10.1371/journal.ppat.1009665.g001
DOI:
10.1371/journal.ppat.1009665.g002
DOI:
10.1371/journal.ppat.1009665.g003
DOI:
10.1371/journal.ppat.1009665.g004
DOI:
10.1371/journal.ppat.1009665.g005
DOI:
10.1371/journal.ppat.1009665.g006
DOI:
10.1371/journal.ppat.1009665.g007
DOI:
10.1371/journal.ppat.1009665.g008
DOI:
10.1371/journal.ppat.1009665.s001
DOI:
10.1371/journal.ppat.1009665.s002
DOI:
10.1371/journal.ppat.1009665.s003
DOI:
10.1371/journal.ppat.1009665.s004
DOI:
10.1371/journal.ppat.1009665.s005
DOI:
10.1371/journal.ppat.1009665.s006
DOI:
10.1371/journal.ppat.1009665.s007
DOI:
10.1371/journal.ppat.1009665.s008
DOI:
10.1371/journal.ppat.1009665.s009
DOI:
10.1371/journal.ppat.1009665.s010
DOI:
10.1371/journal.ppat.1009665.s011
DOI:
10.1371/journal.ppat.1009665.s012
DOI:
10.1371/journal.ppat.1009665.s013
DOI:
10.1371/journal.ppat.1009665.s014
DOI:
10.1371/journal.ppat.1009665.s015
DOI:
10.1371/journal.ppat.1009665.s016
DOI:
10.1371/journal.ppat.1009665.s017
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2021
detail.hit.zdb_id:
2205412-1
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