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Differences in the molecular signatures of mucosal-associated invariant T cells and conventional T cells

Authors :
Dae Ho Lee
Hyung-Ho Ha
Daeui Park
Hwan Jung Lim
Hong Gi Kim
Kang-Seo Park
Seong-Jun Park
Tamina Park
Miok Kim
Chang-Hoon Lee
Source :
Scientific Reports, Vol 9, Iss 1, Pp 1-10 (2019), Scientific Reports
Publication Year :
2019
Publisher :
Nature Publishing Group, 2019.

Abstract

Mucosal-associated invariant T (MAIT) cells exhibit different characteristics from those of TCRα7.2− conventional T cells. They play important roles in various inflammatory diseases, including rheumatoid arthritis and inflammatory bowel disease. MAIT cells express a single T cell receptor alpha chain, TCRα7.2 segment associated with Jα33 and CDR3 with fixed length, which recognizes bacteria-derived vitamin B metabolites. However, the characteristics of MAIT cells and TCRα7.2+ CD161− T cells have never been compared. Here, we performed RNA sequencing to compare the properties of MAIT cells, TCRα7.2− conventional T cells and TCRα7.2+ CD161− T cells. Genome-wide transcriptomes of MAIT cells, TCRα7.2− conventional T cells, and TCRα7.2+ CD161− T cells were compared and analyzed using causal network analysis. This is the first report comparing the transcriptomes of MAIT cells, TCRα7.2− conventional T cells and TCRα7.2+ CD161− T cells. We also identified the predominant signaling pathways of MAIT cells, which differed from those of TCRα7.2− conventional T cells and TCRα7.2+ CD161− T cells, through a gene set enrichment test and upstream regulator analysis and identified the genes responsible for the characteristic MAIT cell phenotypes. Our study advances the complete understanding of MAIT biology.

Details

Language :
English
ISSN :
20452322
Volume :
9
Issue :
1
Database :
OpenAIRE
Journal :
Scientific Reports
Accession number :
edsair.doi.dedup.....1c6dd9914d183f6d35582bf357a69ec2