Peer-reviewed article
Genetic, intrinsic, and environmental determinants of innate immune cytokine responses in healthy four-year-old children
Röring RJ, Sominsky L, Lange K, Weinman AL, Buttery J et al. ·
Summary
Written by AI, not yet AICS's view · claude-haiku-4-5-20251001This is a basic immunology research study measuring innate immune responses in healthy four-year-old children. The study examined genetic, biological, and environmental factors that explain differences in how children's immune systems respond to stimulation. While the research involves children, it is fundamental science focused on understanding immune mechanisms rather than evaluating interventions or addressing child well-being problems.
Key points
- Genetic variants explained 20-45% of variation in cytokine responses across different immune stimuli
- The STING genetic locus showed biologically coherent associations with immune responses
- Systemic inflammatory biomarkers were strongly associated with cytokine responses
- Sex, age, adiposity, and perinatal variables showed limited or modest associations with immune responses
- Seasonal viral infection burden was positively associated with antiviral and inflammatory cytokine responses
Limitations
This study describes immune mechanisms in healthy children but does not evaluate any intervention to improve child health outcomes or address a defined well-being problem. It cannot inform us about the effectiveness of health programmes or policies to benefit children.
Abstract
Abstract/Summary Innate immune responses are crucial for host defence but vary markedly between individuals. Although determinants of this variation are well characterised in adults, data from healthy children remain scarce. We therefore profiled whole-blood cytokine responses to innate immune stimulation in 286 children aged approximately four years and examined genetic, host-intrinsic, and environmental correlates of response. Cytokine responses showed marked inter-individual heterogeneity and stimulus-specific patterns. The top 50 genetic variants explained a substantial proportion (∼20-45%) of this variance across many stimulus conditions, including a biologically coherent association of the STING locus with cGAMP-induced cytokine production. In contrast, sex, age, adiposity, and perinatal variables showed limited or modest associations. Systemic inflammatory biomarkers of systemic inflammation (hsCRP, glycoprotein acetyls, granulocyte-to-lymphocyte ratio) were strongly positively associated with cytokine responses. Finally, seasonal population-level viral infection burden was positively associated with antiviral and inflammatory cytokine responses. Collectively, these findings advance our understanding of variation in early-life whole-blood cytokine responses, underscoring this developmental period as a critical window for understanding immune development trajectories relevant to long-term health.