Details zur Publikation
|Titel (primär)||Specific induction of the unique GPR15 expression in heterogeneous blood lymphocytes by tobacco smoking|
|Autor||Bauer, M.; Hackermüller, J.; Schor, J.; Schreiber, S.; Fink, B.; Pierzchalski, A.; Herberth, G.|
|Journal / Serie||Biomarkers|
|Keywords||GPR15; MAIT; Th17; Treg; smoking|
Purpose: In the peripheral blood, it has been shown that smoking is, to date, the only specific condition leading to an increase in GPR15+ T cells. We, therefore, aimed to characterize GPR15-expressing blood T cells in more detail.
Materials and Methods: The whole transcriptome by RNAseq as a proxy for protein expression was analyzed in GPR15+ and GPR15- T cells. A deep immuno-phenotyping was conducted for the identification of T cell subtypes. Results: The expression of GPR15 seemed to be unique, not concomitantly accompanied with the expression of another protein. According to different T cell subtypes, there is no single cell type prominently represented in GPR15+ T cells. The individually different proportions of GPR15+ cells among each GPR15-expressing T cell subtypes in blood were strongly associated with chronic smoking. Indeed, the frequency of GPR15+ T cell subtypes can be effectively used as a highly convincing biomarker for tobacco smoking. Conclusions: While the chronic smoking-induced enrichment of GPR15+ T cells in blood might indicate a systemic inflammation, by the widespread presence in different T cell subtypes, GPR15 could feature a general impact on maintaining the systemic homeostasis to putatively prevent harm from smoking.
|Bauer, M., Hackermüller, J., Schor, J., Schreiber, S., Fink, B., Pierzchalski, A., Herberth, G. (2019):
Specific induction of the unique GPR15 expression in heterogeneous blood lymphocytes by tobacco smoking
Biomarkers 24 (3), 217 - 224