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Differential Effects of Environmental and Genetic Factors on T and B Cell Immune Traits
Author(s) -
Raúl AguirreGamboa,
Irma Joosten,
Paulo C. M. Urbano,
Renate G. van der Molen,
Esther van Rijssen,
Bram van Cranenbroek,
Marije Oosting,
Sanne P. Smeekens,
Martin Jaeger,
Maria M. Zorro,
Sebo Withoff,
Antonius E. van Herwaarden,
Fred C.G.J. Sweep,
Romana T. Netea,
Morris A. Swertz,
Lude Franke,
Ramnik J. Xavier,
Leo A. B. Joosten,
Mihai G. Netea,
Cisca Wijmenga,
Vinod Kumar,
Yang Li,
Hans J. P. M. Koenen
Publication year - 2016
Publication title -
cell reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.264
H-Index - 154
eISSN - 2639-1856
pISSN - 2211-1247
DOI - 10.1016/j.celrep.2016.10.053
Subject(s) - biology , immune system , genome wide association study , quantitative trait locus , heritability , genetics , genetic association , single nucleotide polymorphism , genetic variation , genomics , immunology , phenotype , computational biology , genome , genotype , gene
Effective immunity requires a complex network of cellular and humoral components that interact with each other and are influenced by different environmental and host factors. We used a systems biology approach to comprehensively assess the impact of environmental and genetic factors on immune cell populations in peripheral blood, including associations with immunoglobulin concentrations, from ∼500 healthy volunteers from the Human Functional Genomics Project. Genetic heritability estimation showed that variations in T cell numbers are more strongly driven by genetic factors, while B cell counts are more environmentally influenced. Quantitative trait loci (QTL) mapping identified eight independent genomic loci associated with leukocyte count variation, including four associations with T and B cell subtypes. The QTLs identified were enriched among genome-wide association study (GWAS) SNPs reported to increase susceptibility to immune-mediated diseases. Our systems approach provides insights into cellular and humoral immune trait variability in humans.

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