Single-cell RNA sequencing illuminates the ontogeny, conservation and diversification of cartilaginous and bony fish lymphocytes.
Nat Commun
; 15(1): 7627, 2024 Sep 03.
Article
in En
| MEDLINE
| ID: mdl-39227568
ABSTRACT
Elucidating cellular architecture and cell-type evolution across species is central to understanding immune system function and susceptibility to disease. Adaptive immunity is a shared trait of the common ancestor of cartilaginous and bony fishes. However, evolutionary features of lymphocytes in these two jawed vertebrates remain unclear. Here, we present a single-cell RNA sequencing atlas of immune cells from cartilaginous (white-spotted bamboo shark) and bony (zebrafish and Chinese tongue sole) fishes. Cross-species comparisons show that the same cell types across different species exhibit similar transcriptional profiles. In the bamboo shark, we identify a phagocytic B cell population expressing several pattern recognition receptors, as well as a T cell sub-cluster co-expressing both T and B cell markers. In contrast to a division by function in the bony fishes, we show close linkage and poor functional specialization among lymphocytes in the cartilaginous fish. Our cross-species single-cell comparison presents a resource for uncovering the origin and evolution of the gnathostome immune system.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Lymphocytes
/
Fishes
Limits:
Animals
Language:
En
Journal:
Nat Commun
/
Nature communications
Journal subject:
BIOLOGIA
/
CIENCIA
Year:
2024
Type:
Article
Affiliation country:
China