A human iPSC-array-based GWAS identifies a virus susceptibility locus in the NDUFA4 gene and functional variants

Cell Stem Cell. 2022 Oct 6;29(10):1475-1490.e6. doi: 10.1016/j.stem.2022.09.008.

Abstract

Population-based studies to identify disease-associated risk alleles typically require samples from a large number of individuals. Here, we report a human-induced pluripotent stem cell (hiPSC)-based screening strategy to link human genetics with viral infectivity. A genome-wide association study (GWAS) identified a cluster of single-nucleotide polymorphisms (SNPs) in a cis-regulatory region of the NDUFA4 gene, which was associated with susceptibility to Zika virus (ZIKV) infection. Loss of NDUFA4 led to decreased sensitivity to ZIKV, dengue virus, and SARS-CoV-2 infection. Isogenic hiPSC lines carrying non-risk alleles of SNPs or deletion of the cis-regulatory region lower sensitivity to viral infection. Mechanistic studies indicated that loss/reduction of NDUFA4 causes mitochondrial stress, which leads to the leakage of mtDNA and thereby upregulation of type I interferon signaling. This study provides proof-of-principle for the application of iPSC arrays in GWAS and identifies NDUFA4 as a previously unknown susceptibility locus for viral infection.

Keywords: Dengue Virus; NDUFA4; SARS-CoV-2; genome-wide association study; iPSC array; isogenic hiPSC lines; mtDNA; risk allele; single-nucleotide polymorphism; type I interferon.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alleles
  • COVID-19* / genetics
  • DNA, Mitochondrial / metabolism
  • Dengue* / genetics
  • Electron Transport Complex IV* / genetics
  • Genetic Predisposition to Disease
  • Genome-Wide Association Study
  • Humans
  • Induced Pluripotent Stem Cells / metabolism
  • Interferon Type I / metabolism
  • Polymorphism, Single Nucleotide
  • SARS-CoV-2
  • Zika Virus
  • Zika Virus Infection* / genetics

Substances

  • DNA, Mitochondrial
  • Electron Transport Complex IV
  • Interferon Type I
  • NDUFA4 protein, human