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Genetic regulators of cytokine responses upon BCG vaccination in children from West Africa

Collins K Boahen, S J C F M Moorlag, Kristoffer Jarlov Jensen, Vasiliki Matzaraki, Stephanie Fanucchi, Ivan Monteiro, Charlotte de Bree, Ezio T Fok, Musa Mhlanga, Leo A B Joosten, Peter Aaby, Christine Stabell Benn, Mihai G Netea, Vinod Kumar

6 Citations (Scopus)

Abstract

Genetic variation is a key factor influencing cytokine production capacity, but which genetic loci regulate cytokine production before and after vaccination, particularly in African population is unknown. Here, we aimed to identify single-nucleotide polymorphisms (SNPs) controlling cytokine responses after microbial stimulation in infants of West-African ancestry, comprising of low-birth-weight neonates randomized to bacillus Calmette-Guérin (BCG) vaccine-at-birth or to the usual delayed BCG. Genome-wide cytokine cytokine quantitative trait loci (cQTL) mapping revealed 12 independent loci, of which the LINC01082-LINC00917 locus influenced more than half of the cytokine-stimulation pairs assessed. Furthermore, nine distinct cQTLs were found among infants randomized to BCG. Functional validation confirmed that several complement genes affect cytokine response after BCG vaccination. We observed a limited overlap of common cQTLs between the West-African infants and cohorts of Western European individuals. These data reveal strong population-specific genetic effects on cytokine production and may indicate new opportunities for therapeutic intervention and vaccine development in African populations.

Original languageEnglish
JournalJournal of genetics and genomics = Yi chuan xue bao
Volume50
Issue number6
Pages (from-to)434-446
Number of pages13
ISSN1673-8527
DOIs
Publication statusPublished - Jun 2023

Keywords

  • Infant, Newborn
  • Infant
  • Humans
  • Child
  • BCG Vaccine/genetics
  • Cytokines/genetics
  • Africa, Western
  • Vaccination

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