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Decoding sex differences in human immunity through systems immunology
Oxford Open Immunology
|July 22, 2025
Summary
Biological sex significantly impacts human immune function, influencing disease susceptibility and treatment responses. Systems immunology reveals how sex chromosomes and hormones shape immunity, enabling sex-specific medical interventions.
Area of Science:
- Immunology
- Systems Biology
- Human Genetics
Background:
- Human immune function exhibits significant variability, with biological sex being a primary determinant.
- Men often experience more severe infections and higher cancer incidence, whereas women show enhanced vaccine responses but greater autoimmunity prevalence.
- Intrinsic sex differences stem from chromosomal sex and sex hormone signaling pathways affecting various cell types.
Purpose of the Study:
- To analyze the current literature on immune sex differences in humans using systems immunology approaches.
- To elucidate the mechanisms by which biological sex modulates human immunity, focusing on sex chromosomes and hormones.
- To explore how systems immunology advances the understanding of sex-based immune variations in health and disease.
Main Methods:
- Literature analysis of systems immunology applications in studying human immune sex differences.
- Examination of mechanisms including sex chromosomes, sex hormones, cell composition, transcriptomics, epigenomics, metabolomics, spatial and cell-cell interactions, and plasma proteomics.
- Review of systems-level applications for investigating sex differences in immune responses to perturbations.
Main Results:
- Biological sex, influenced by chromosomes and hormones, profoundly impacts immune cell composition, gene expression, and metabolic profiles.
- Systems immunology reveals sex-specific differences in immune system states and responses to challenges.
- Sex differences are evident across multiple molecular and cellular levels, from epigenomics to cell interactions.
Conclusions:
- Systems immunology offers a powerful framework for decoding sex-regulated immune pathways.
- Understanding these sex differences is crucial for developing precise, sex-informed therapeutic strategies.
- This approach paves the way for tailored interventions addressing sex disparities in immune-related conditions.
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