Review: cuproptosis mechanisms and proposed roles in osteoarthritis, osteoporosis and disc degeneration
This review links copper-dependent, mitochondria-associated regulated cell death (cuproptosis) to age-related orthopedic diseases such as osteoarthritis, osteoporosis and intervertebral disc degeneration, while separating established evidence from mechanistic hypotheses. [1]
Automatic summary · not editorially reviewed
The key findings
Cuproptosis is described as a copper-dependent, mitochondria-associated form of regulated cell death triggered by intracellular copper accumulation. [1]
Aging may involve systemic copper redistribution, impaired intracellular copper buffering, expanded labile copper pools and iron dysregulation, proposed as an interconnected axis sensitizing skeletal tissues. [1]
The review states that serum copper, tissue copper and intracellular labile copper should not be interpreted interchangeably. [1]
The source at a glance
- Study type / format
- Review (abstract only)
- Population / context
- People with age-related orthopedic diseases, specifically osteoarthritis, osteoporosis and intervertebral disc degeneration, as discussed in a review
- Summary based on
- Study abstract
- Original publication
- September 15, 2026
Copper-driven cell death mechanism described
The abstract describes cuproptosis as an emerging copper-dependent, mitochondria-associated form of regulated cell death. It is triggered by intracellular copper accumulation, which leads to aggregation of lipoylated tricarboxylic acid cycle proteins, destabilization of iron-sulfur cluster proteins and proteotoxic stress-induced bioenergetic collapse. The review says it synthesizes current advances in copper homeostasis and the molecular determinants of cuproptosis.
Supporting source [1]
Proposed metal-redox-metabolic axis in skeletal aging
Osteoarthritis, osteoporosis and intervertebral disc degeneration are described as a growing global burden sharing features such as mitochondrial dysfunction, oxidative stress, chronic low-grade inflammation and progressive skeletal cell loss. Aging may involve systemic copper redistribution, impaired intracellular copper buffering, expanded labile copper pools and iron dysregulation. Together these are proposed to form an interconnected metal-redox-metabolic axis that sensitizes skeletal tissues to degenerative remodeling; the upstream regulatory networks remain incompletely defined.
Supporting source [1]
Review separates evidence from hypotheses on copper measures
The review emphasizes potential involvement of cuproptosis in osteoarthritis, osteoporosis and intervertebral disc degeneration and distinguishes established evidence from mechanistic hypotheses. It argues that serum copper, tissue copper and intracellular labile copper should not be interpreted interchangeably. Future perspectives concern targeting cuproptosis for treatment of age-related orthopedic diseases, aiming to stimulate further clinical investigation and therapeutic innovation.
Supporting source [1]
How to interpret this
This is an abstract of a review; the full text was not reviewed. The abstract reports no study design, sample, follow-up or outcome data, and the roles of cuproptosis in these diseases are presented as potential involvement and hypotheses, not established causes or treatments.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Hu L, Xu D, Zhou J, Ban K, Shen T, Liu C, Zhu Y. · europepmc.org · September 15, 2026