ArticleNature communications2025
Aneuploidy-induced proteostasis disruption impairs mitochondrial functions and mediates aggregation of mitochondrial precursor proteins through SQSTM1/p62.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Mass spectrometry proteomics for studying mitostasis.Protein science : a publication of the Protein Society · 2026Review
- Quality control of protein import into mammalian mitochondria.Protein science : a publication of the Protein Society · 2026Review
- Paired CRISPR screens identify mitochondrial metabolism and UBE2H as aneuploid-specific dependencies in human cancer cell lines.bioRxiv : the preprint server for biology · 2026Article
- Identification of candidate genes associated with mitotic-origin aneuploidy: a genome-wide association study.Journal of assisted reproduction and genetics · 2026Article
- Mitochondrial presequences are more than just address labels.Protein science : a publication of the Protein Society · 2026Review
- Chromosome duplication causes premature aging via defects in ribosome quality control.PLoS biology · 2025Article
Corrections and comments
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Authors and funding
11 authors.
Funding
Abstract
Aneuploidy, or aberrant chromosomal content, disrupts cellular proteostasis through altered expression of numerous proteins. Aneuploid cells accumulate SQSTM1/p62-positive cytosolic bodies, exhibit impaired protein folding, and show altered proteasomal and lysosomal activity. Here, we employ p62 proximity- and affinity-based proteomics to elucidate p62 interactors in aneuploid cells and observe an enrichment of mitochondrial proteins. Increased protein aggregation and colocalization of p62 with both novel interactors and mitochondrial proteins is further confirmed by microscopy. Compared to parental diploids, aneuploid cells suffer from mitochondrial defects, including perinuclearly-clustered mitochondrial networks, elevated reactive oxygen species levels, reduced mitochondrial DNA abundance, and impaired protein import, leading to cytosolic accumulation of mitochondrial precursor proteins. Overexpression of heat shock proteins in aneuploid cells mitigates protein aggregation and decreases the colocalization of p62 with the mitochondrial protein TOMM20. Thus, proteotoxic stress caused by chromosome gains results in the sequestration of mitochondrial precursor proteins into cytosolic p62-bodies, thereby compromising mitochondrial function.
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Registered trials
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