Cited by 66Immune Response and InflammationNF-κB Signaling PathwaysInflammasome and immune disorders

Two Human MYD88 Variants, S34Y and R98C, Interfere with MyD88-IRAK4-Myddosome Assembly

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George, Julie, Motshwene, Precious G., Wang, Hui, Kubarenko, Andriy V., Rautanen, Anna, Mills, Tara C., Hill, Adrian V.S., Gay, Nicholas J. +1 more·2011·Journal of Biological Chemistry

Abstract

Innate immune receptors detect microbial pathogens and subsequently activate adaptive immune responses to combat pathogen invasion. MyD88 is a key adaptor molecule in both Toll-like receptor (TLR) and IL-1 receptor superfamily signaling pathways. This is illustrated by the fact that human individuals carrying rare, naturally occurring MYD88 point mutations suffer from reoccurring life-threatening infections. Here we analyzed the functional properties of six reported non-synonymous single nucleotide polymorphisms of MYD88 in an in vitro cellular system. Two variants found in the MyD88 death domain, S34Y and R98C, showed severely reduced NF-κB activation due to reduced homo-oligomerization and IRAK4 interaction. Structural modeling highlights Ser-34 and Arg-98 as residues important for the assembly of the Myddosome, a death domain (DD) post-receptor complex involving the DD of MyD88, IRAK4, and IRAK2 or IRAK1. Using S34Y and R98C as functional probes, our data show that MyD88 homo-oligomerization and IRAK4 interaction is modulated by the MyD88 TIR and IRAK4 kinase domain, demonstrating the functional importance of non-DD regions not observed in a recent Myddosome crystal structure. The differential interference of S34Y and R98C with some (IL-1 receptor, TLR2, TLR4, TLR5, and TLR7) but not all (TLR9) MyD88-dependent signaling pathways also suggests that receptor specificities exist at the level of the Myddosome. Given their detrimental effect on signaling, it is not surprising that our epidemiological analysis in several case-control studies confirms that S34Y and R98C are rare variants that may drastically contribute to susceptibility to infection in only few individuals.

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  • There is extensive precedent for rare variants contributing substantially to special cases of complex disease, including infection risk.

    “There is thus extensive precedent for rare variants contributing substantially to special cases of complex disease, including risk of infection44.”

    From Rare and common variants: twenty arguments (2012) · cites this paper as [44]

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  1. [22]Barrios-Rodiles M. Brown K. R. Ozdamar B. Bose R. Liu Z. Donovan R. S. Shinjo F. Liu Y. Dembowy J. Taylor I. W. Luga V. Przulj N. Robinson M. Suzuki H. Hayashizaki Y. Jurisica I. Wrana J. L. (2005) Science 307, 1621– 1625 15761153

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Authors
George, J., Motshwene, P. G., Wang, H., Kubarenko, A. V., Rautanen, A., Mills, T. C., Hill, A. V. S., Gay, N. J., & Weber, A. N. R.
Affiliations
  • German Cancer Research Center (DE)
  • University of Cambridge (GB)
  • Centre for Human Genetics (GB)
Corresponding author
Weber, Alexander N.R.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2011-01
Volume
286
Issue
2
Pages
1341-1353
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1990975597
Cited by
66
References
40
Citations by year
2026: 2 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 4 · 2019: 4 · 2018: 4 · 2017: 6 · 2016: 7 · 2015: 3 · 2014: 7 · 2013: 5 · 2012: 7
FWCI
2.47
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • Wellcome Trust
  • British Heart Foundation
  • Biotechnology and Biological Sciences Research Council (BB/G002797/1)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
Keywords
MyD88, Myddosome, IRAK4, IRAK2, IRAK1, death domain, NF-κB activation, Toll-like receptor signaling, IL-1 signaling, homo-oligomerization, innate immunity, infection susceptibility, single nucleotide polymorphisms, TIR domain, receptor specificity
MeSH terms
Crystallography, Genotype, Humans, Infections, Models, Chemical, Phenotype, Structure-Activity Relationship, Genetic Variation, Signal Transduction, Protein Structure, Tertiary, Genetic Predisposition to Disease, Polymorphism, Single Nucleotide, Interleukin-1 Receptor-Associated Kinases, Myeloid Differentiation Factor 88

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