In vertebrates,bony fishes possess not only innate immune cells but also T and B cells that are equivalent to those in mammals.However,the precise sub-cluster of immune cells in teleost fish remains largely unknown.He...In vertebrates,bony fishes possess not only innate immune cells but also T and B cells that are equivalent to those in mammals.However,the precise sub-cluster of immune cells in teleost fish remains largely unknown.Herein,we developed a dynamic bacterial infection model in turbot(Scophthalmus maximus)and created a fish immune cell landscape(FICL)for a primary lymphoid organ(head kidney),a secondary lymphoid organ(spleen),and barrier tissues(gill and posterior intestine).Moreover,through comprehensive characterization of the expression profiles of 16 clusters,including dendritic cells-like(DCs-like),macrophages(Mos),neutrophils,NK cells,as well as 12 sub-clusters of T and B cells,we found that CD8+CTLs,CD4-CD8-T,Th17 and ILC3-2 like cells posssa bifunctional role associated with cytotoxicity and immunoregulation during bacterial infection.To our knowledge,these results could provide a useful resource for a better understanding of immune cells in teleost fish and could act as a comprehensive knowledge base for assessing the evolutionary mechanism of adaptive immunity in vertebrates.展开更多
基金supported by the National Natural Science Foundation of China[Grant Nos.32025038(Q.L.),32122090(D.Y.)]and the Natural Science Foundation of Shanghai[Grant No.20ZR1415500(D.Y.)].
文摘In vertebrates,bony fishes possess not only innate immune cells but also T and B cells that are equivalent to those in mammals.However,the precise sub-cluster of immune cells in teleost fish remains largely unknown.Herein,we developed a dynamic bacterial infection model in turbot(Scophthalmus maximus)and created a fish immune cell landscape(FICL)for a primary lymphoid organ(head kidney),a secondary lymphoid organ(spleen),and barrier tissues(gill and posterior intestine).Moreover,through comprehensive characterization of the expression profiles of 16 clusters,including dendritic cells-like(DCs-like),macrophages(Mos),neutrophils,NK cells,as well as 12 sub-clusters of T and B cells,we found that CD8+CTLs,CD4-CD8-T,Th17 and ILC3-2 like cells posssa bifunctional role associated with cytotoxicity and immunoregulation during bacterial infection.To our knowledge,these results could provide a useful resource for a better understanding of immune cells in teleost fish and could act as a comprehensive knowledge base for assessing the evolutionary mechanism of adaptive immunity in vertebrates.
