Comparative Population Genomics across Three Continents Reveals Immune Adaptation and Implications for Vaccine Development
Tawfik, A.; Van Steen, K.; Sakuntabhai, A.
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Human populations have evolved distinct immune responses to local pathogens, and investigating signatures of natural selection across populations can reveal both shared and population-specific immune response mechanisms. We compared genomic signatures of natural selection in Senegalese, Thai, and Peruvian populations using two complementary methods, hypothesising that this tri-continental comparison would reveal population-specific adaptive variants in genes regulating immune pathways. Our findings confirm that genetic diversity among these populations is reflected in their immune responses to regionally endemic pathogens. Furthermore, candidate immune-related genomic regions identified through selection scanning provide insights for ancestry-informed vaccine development by directing antigen design for region-specific pathogens, incorporating population-specific adjuvants, and tailoring administration strategies.
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