Abstract：
:γδ T cells function as sentinels in early host response to infections and malignancies. Although γδ T cells are regarded as innate immune cells and recognize antigens in a non-MHC restricted manner, they possess a huge diversity of complementary determinant region 3 (CDR3) of T cell receptor (TCR) generated by the rearrangement of germ-line gene V- (D) -J-C fragments. However, the detailed characteristics of the TCRγδ CDR3 repertoire remain unclear. A comprehensive analysis would answer fundamental questions about the diversity of the TCRγδ CDR3 repertoire and elucidate the mechanism underlying γδ T cell recognition of pathogens and tumor antigens. In this study, we used Immune Repertoire Sequencing (IR-SEQ) to analyze the diversity of TCRγδ CDR3 repertoires from 30 healthy donors. The results show that IR-SEQ had sufficient repeatability to analyze the TCRγδ CDR3 repertoire. The diversity of TCRγδ CDR3 repertoire is quite dispersed and individually different. The TCR δ chain (TRD) repertoire displayed more diversity and less sharing among individuals compared with TCR γ chain (TRG). To our knowledge, this is the first study to use IR-SEQ to characterize the repertoire of TCRγδ CDR3 in human peripheral blood γδ T cells by using IR-SEQ. Our findings provide a basic understanding of the diversity of TCRγδ repertoire in the physiological condition, which provides a clue to the underlying mechanism of γδ T cell recognition of pathogens and tumor antigens.
journal_name
J Immunol Methodsjournal_title
Journal of immunological methodsauthors
Chen H,Zou M,Teng D,Zhang J,He Wdoi
10.1016/j.jim.2017.01.009subject
Has Abstractpub_date
2017-04-01 00:00:00pages
9-17eissn
0022-1759issn
1872-7905pii
S0022-1759(16)30291-5journal_volume
443pub_type
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journal_title：Journal of immunological methods
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