Cited by 83Genetic Associations and EpidemiologyAdvanced Proteomics Techniques and ApplicationsGenetic and phenotypic traits in livestock

Identification of genetic variants influencing the human plasma proteome

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Johansson, Åsa, Enroth, Stefan, Palmblad, Magnus, Deelder, André M., Bergquist, Jonas, Gyllensten, Ulf·2013·Proceedings of the National Academy of Sciences

Abstract

Genetic variants influencing the transcriptome have been extensively studied. However, the impact of the genetic factors on the human proteome is largely unexplored, mainly due to lack of suitable high-throughput methods. Here we present unique and comprehensive identification of genetic variants affecting the human plasma protein profile by combining high-throughput and high-resolution mass spectrometry (MS) with genome-wide SNP data. We identified and quantified the abundance of 1,056 tryptic-digested peptides, representing 163 proteins in the plasma of 1,060 individuals from two population-based cohorts. The abundance level of almost one-fifth (19%) of the peptides was found to be heritable, with heritability ranging from 0.08 to 0.43. The levels of 60 peptides from 25 proteins, 15% of the proteins studied, were influenced by cis -acting SNPs. We identified and replicated individual cis -acting SNPs (combined P value ranging from 3.1 × 10 −52 to 2.9 × 10 −12 ) influencing 11 peptides from 5 individual proteins. These SNPs represent both regulatory SNPs and nonsynonymous changes defining well-studied disease alleles such as the ɛ4 allele of apolipoprotein E (APOE), which has been shown to increase risk of Alzheimer's disease. Our results show that high-throughput mass spectrometry represents a promising method for large-scale characterization of the human proteome, allowing for both quantification and sequencing of individual proteins. Abundance and peptide composition of a protein plays an important role in the etiology, diagnosis, and treatment of a number of diseases. A better understanding of the genetic impact on the plasma proteome is therefore important for evaluating potential biomarkers and therapeutic agents for common diseases.

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Crossref · 10.1073/pnas.1217238110

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Authors
Johansson, Å., Enroth, S., Palmblad, M., Deelder, A. M., Bergquist, J., & Gyllensten, U.
Affiliations
  • Uppsala University (SE)
  • Leiden University Medical Center (NL)
Venue
Proceedings of the National Academy of Sciences
Published
2013-03-04
Volume
110
Issue
12
Pages
4673-4678
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2082354164
Cited by
82
References
37
Citations by year
2026: 3 · 2025: 2 · 2024: 5 · 2023: 6 · 2022: 4 · 2021: 5 · 2020: 9 · 2019: 3 · 2018: 11 · 2017: 5 · 2016: 6 · 2015: 10 · 2014: 10 · 2013: 3
FWCI
6.41
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Leiden Repository (Leiden University) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
Keywords
plasma proteome, genetic variants, heritability, peptide abundance, protein abundance, apolipoprotein E, APOE ε4, regulatory SNPs, non-synonymous mutations, biomarkers, high-throughput mass spectrometry, proteomics
MeSH terms
Adolescent, Adult, Alleles, Blood Proteins, Female, Genetic Markers, Humans, Male, Middle Aged, Cohort Studies, Biomarkers, Proteome, Polymorphism, Single Nucleotide, Genome-Wide Association Study

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