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 language | English |
|---|---|
| Journal | Journal of genetics and genomics = Yi chuan xue bao |
| Volume | 50 |
| Issue number | 6 |
| Pages (from-to) | 434-446 |
| Number of pages | 13 |
| ISSN | 1673-8527 |
| DOIs | |
| Publication status | Published - Jun 2023 |
Keywords
- Infant, Newborn
- Infant
- Humans
- Child
- BCG Vaccine/genetics
- Cytokines/genetics
- Africa, Western
- Vaccination
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