Cited by 475Genetic Associations and EpidemiologyEvolution and Genetic DynamicsImmune Response and Inflammation

Genetic adaptation and Neandertal admixture shaped the immune system of human populations

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Quach, Hélène, Rotival, Maxime, Pothlichet, Julien, Loh, Yong-Hwee Eddie, Dannemann, Michael, Zidane, Nora, Laval, Guillaume, Patin, Etienne +13 more·2016·Cell

Abstract

Humans differ in the outcome that follows exposure to life-threatening pathogens, yet the extent of population differences in immune responses and their genetic and evolutionary determinants remain undefined. Here, we characterized, using RNA sequencing, the transcriptional response of primary monocytes from Africans and Europeans to bacterial and viral stimuli-ligands activating Toll-like receptor pathways (TLR1/2, TLR4, and TLR7/8) and influenza virus-and mapped expression quantitative trait loci (eQTLs). We identify numerous cis-eQTLs that contribute to the marked differences in immune responses detected within and between populations and a strong trans-eQTL hotspot at TLR1 that decreases expression of pro-inflammatory genes in Europeans only. We find that immune-responsive regulatory variants are enriched in population-specific signals of natural selection and show that admixture with Neandertals introduced regulatory variants into European genomes, affecting preferentially responses to viral challenges. Together, our study uncovers evolutionarily important determinants of differences in host immune responsiveness between human populations.

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Crossref · 10.1016/j.cell.2016.09.024

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  • Neanderthal variants within immune genes and immune-related CREs have been associated with differential responses to viral infections among present-day Europeans.

    “Neanderthal variants within immune genes and immune-related cis-regulatory elements (CREs) have been associated with differential responses to viral infections among present-day Europeans [21, 22].”

    From Denisovan introgression has shaped the immune system of present-day Papuans (2022) · cites this paper as [22]

    The Results section, “Neandertal Contribution to Transcriptional Responses to Immune Challenges” (page unavailable), links Neandertal-derived variants in Europeans to altered gene-expression responses under influenza-virus and viral-stimulus conditions. The copy does not establish that those specific variants lie within both immune genes and immune-related cis-regulatory elements, as the citing sentence states; it measures cellular transcriptional responses rather than infection outcomes. (LLM, conf=0.82)

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  • The results presented in this study argue for a potential contribution of Denisovan variants to immune-related phenotypes amongst early modern humans in the region, potentially favouring adaptation to the local environment.

    “While further experimental validation of our observations is necessary in order to characterise the genome-wide impact of archaic introgression, the results presented in this study argue for a potential contribution of Denisovan variants to immune-related phenotypes amongst early modern humans in the region, potentially favouring adaptation to the local environment [15, 22].”

    From Denisovan introgression has shaped the immune system of present-day Papuans (2022) · cites this paper as [22]

    The Introduction says modern Eurasians carry Denisovan or Neandertal ancestry and that archaic admixture has added diversity at immune genes. But the Results and Discussion attribute the paper’s findings on immune responses and possible local adaptation specifically to Neandertal variants in contemporary Europeans, not Denisovan variants in early modern humans in the citing study’s region. (LLM, conf=0.86)

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  • Studies conducted primarily on Neanderthal introgressed DNA have suggested a non-negligible contribution to gene expression variation in modern humans, with repeated examples of Neanderthal archaic variants falling within regulatory elements or the seed region of mature micro-RNAs predicted to affect transcriptional and post-transcriptional regulatory processes.

    “Indeed, studies conducted primarily on Neanderthal introgressed DNA have suggested a non-negligible contribution to gene expression variation in modern humans [10, 11, 22], with repeated examples of Neanderthal archaic variants falling within regulatory elements or the seed region of mature micro-RNAs predicted to affect transcriptional and post-transcriptional regulatory processes [11, 62].”

    From Denisovan introgression has shaped the immune system of present-day Papuans (2022) · cites this paper as [22]

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  • There are exceptions to the general neutral or near-neutral pattern of archaic introgression, with examples of adaptive introgression related to the immune system, skin pigmentation, and altitude.

    “However, there are exceptions to this general pattern, with examples of adaptive introgression related to the immune system (54, 55), skin pigmentation (9), and altitude (56)”
  • Selected variants can exert their effect by modifying gene expression or by changing the amino acid sequence.

    “Selected variants can exert their effect by modifying gene expression or by changing the amino acid sequence [8–12].”

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Authors
Quach, H., Rotival, M., Pothlichet, J., Loh, Y.-H. E., Dannemann, M., Zidane, N., Laval, G., Patin, E., Harmant, C., Lopez, M., Deschamps, M., Naffakh, N., Duffy, D., Coen, A., Leroux-Roels, G., Clément, F., Boland, A., Deleuze, J.-F., Kelso, J., Albert, M. L., & Quintana-Murci, L.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Max Planck Institute for Evolutionary Anthropology (DE)
  • Institut Pasteur (FR)
  • Ghent University Hospital (BE)
  • Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
Venue
Cell
Publisher
Elsevier BV
Published
2016-10
Volume
167
Issue
3
Pages
643-656.e17
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2532435486
Cited by
475
References
85
Citations by year
2026: 41 · 2025: 30 · 2024: 51 · 2023: 52 · 2022: 56 · 2021: 65 · 2020: 56 · 2019: 46 · 2018: 42 · 2017: 33 · 2016: 2 · 2015: 1
FWCI
33.09
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, cc-by-nc-nd)
  • Max Planck Digital Library (submittedVersion, other-oa)
  • MPG.PuRe (Max Planck Society) (submittedVersion, cc-by-nc-nd)
Funders
  • European Commission (2007–2013, 655417, FP/2007-2013)/ERC, FP/2007/2013)
  • Deutsche Forschungsgemeinschaft (FP/2007-2013)
  • Max-Planck-Gesellschaft
  • FP7 Ideas: European Research Council (281297)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
Toll-like receptors, TLR1, TLR4, TLR7/8, expression quantitative trait loci, cis-eQTL, regulatory variants, natural selection, pro-inflammatory gene expression
MeSH terms
Adaptation, Physiological, Alleles, Animals, Bacterial Infections, Base Sequence, Biological Evolution, Gene Expression Regulation, Humans, Immune System, RNA, Selection, Genetic, Transcription, Genetic, Genetic Variation, Virus Diseases, Sequence Analysis, RNA, Quantitative Trait Loci, Black People, White People, Toll-Like Receptors, Adaptive Immunity, Neanderthals

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