Single-cell analysis of the somatic mutational landscape in human chondrocytes during aging and in osteoarthritis.

ABSTRACT: Somatic mutation is now recognized as a cause of multiple human diseases other than cancer. Osteoarthritis (OA), a highly prevalent age-related disease, has been associated with increased chromosomal abnormalities in articular cartilage. Here we characterize the somatic mutational landscape of chondrocytes during normal aging and in affected cartilage of patients with OA. We used single-cell whole-genome sequencing to analyze single-nucleotide variants (SNVs) and small insertions and deletions (InDels) in 100 chondrocytes isolated from the cartilage of hip femoral heads of 17 research participants aged 26-90 years, including 9 patients with OA and 8 non-OA donors. Both SNVs and InDels accumulate with age in chondrocytes with a clock-like mutational signature. Surprisingly, the age-related

SUBMITTER: Ren P 

PROVIDER: S-EPMC12705439 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature