Comparative analysis of monocyte subsets in the pig

Human and mouse monocyte can be divided into two different subpopulations based on surface marker expression: CD14/16 and Ly6C/CX3CR1, respectively. Monocyte subpopulations in the pig were identified based on reciprocal expression of CD14 and the scavenger receptor CD163. The two populations, CD14(h...

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Bibliographic Details
Published in:The Journal of immunology (1950) 2013-06, Vol.190 (12), p.6389-6396
Main Authors: Fairbairn, Lynsey, Kapetanovic, Ronan, Beraldi, Dario, Sester, David P, Tuggle, Chris K, Archibald, Alan L, Hume, David A
Format: Article
Language:English
Subjects:
Animals
Flow Cytometry
Humans
Immunology
Immunophenotyping
Life Sciences
Microbiology and Parasitology
Monocytes - cytology
Monocytes - immunology
Monocytes - metabolism
Oligonucleotide Array Sequence Analysis
Sus scrofa - immunology
Swine
Transcriptome
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Summary:Human and mouse monocyte can be divided into two different subpopulations based on surface marker expression: CD14/16 and Ly6C/CX3CR1, respectively. Monocyte subpopulations in the pig were identified based on reciprocal expression of CD14 and the scavenger receptor CD163. The two populations, CD14(hi)-CD163(low) and CD14(low)-CD163(hi), show approximately equal abundance in the steady-state. Culture of pig PBMCs in CSF1 indicates that the two populations are a maturation series controlled by this growth factor. Gene expression in pig monocyte subpopulations was profiled using the newly developed and annotated pig whole genome snowball microarray. Previous studies have suggested a functional equivalence between human and mouse subsets, but certain genes such as CD36, CLEC4E, or TREM-1 showed human-specific expression. The same genes were expressed selectively in pig monocyte subsets. However, the profiles suggest that the pig CD14(low)-CD163(high) cells are actually equivalent to intermediate human monocytes, and there is no CD14(-) CD16(+) "nonclassical" population. The results are discussed in terms of the relevance of the pig as a model for understanding human monocyte function.
ISSN:0022-1767
1550-6606
DOI:10.4049/jimmunol.1300365