Yukun Yin

Abstract Age-related degeneration of articular cartilage is a key pathological hallmark of primary osteoarthritis (OA). As the cartilage’s barrier layer, the superficial zone maintains tissue homeostasis and is increasingly recognized as the initial site of age-related cartilage degeneration. Disruption of this zone exposes deeper layers to hostile microenvironments, accelerating pan-cartilaginous changes; however, its age-related progression remains incompletely defined.

Abstract Nucleus pulposus cell (NPC) senescence is a core driver of intervertebral disc degeneration (IVDD), but the metabolic mechanisms underlying this process remain poorly understood. We integrated transcriptomics, untargeted metabolomics, and single-cell RNA sequencing to characterize metabolic reprogramming in TBHP-induced senescent rat NPCs, followed by validation in a human disc degeneration dataset.

Conflicts of Interest The authors declare no conflicts of interest. References 1 and , “The Changing Role of Pathology in Breast Cancer Diagnosis and Treatment,” Pathobiology 78, no. 2 (2011): 99–114, https://doi.org/10.1159/000292644. 2, , and , “Diagnosis and Management of Hepatitis in Patients on Checkpoint Blockade,” Oncologist 23, no. 9 (2018): 991–997, https://doi.org/10.1634/theoncologist.2018-0174.