Abstract
Genome-wide association studies (GWAS) have identified loci for kidney disease, but the causal variants, genes, and pathways remain unknown. Here we identify two kidney disease genes Dipeptidase 1 (DPEP1) and Charged Multivesicular Body Protein 1 A (CHMP1A) via the triangulation of kidney function GWAS, human kidney expression, and methylation quantitative trait loci. Using single-cell chromatin accessibility and genome editing, we fine map the region that controls the expression of both genes. Mouse genetic models demonstrate the causal roles of both genes in kidney disease. Cellular studies indicate that both Dpep1 and Chmp1a are important regulators of a single pathway, ferroptosis and lead to kidney disease development via altering cellular iron trafficking.
© 2021. The Author(s).
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Blood Urea Nitrogen
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Chromatin / metabolism
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Cisplatin
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DNA Methylation / genetics
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Dipeptidases / deficiency
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Dipeptidases / genetics*
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Dipeptidases / metabolism
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Ferroptosis / genetics*
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Folic Acid
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Gene Editing
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Gene Expression Regulation
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Genetic Loci*
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Genetic Predisposition to Disease*
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Genome-Wide Association Study
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Haploinsufficiency / genetics
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Humans
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Iron / metabolism
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Kidney / pathology
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Kidney Diseases / chemically induced
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Kidney Diseases / genetics*
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Mice
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Necroptosis / genetics
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Organ Specificity
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Physical Chromosome Mapping
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Pyroptosis / genetics
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Quantitative Trait Loci
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RNA, Messenger / genetics
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RNA, Messenger / metabolism
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Vesicular Transport Proteins / deficiency
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Vesicular Transport Proteins / genetics*
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Vesicular Transport Proteins / metabolism
Substances
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CHMP1A protein, human
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Chromatin
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RNA, Messenger
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Vesicular Transport Proteins
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chmp1a protein, mouse
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Folic Acid
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Iron
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Dipeptidases
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dipeptidase
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Cisplatin