Origin and role of stem-like chondrocytes in osteoarthritic cartilage

Determine the origin of immature or stem-like cells present in articular cartilage from patients with osteoarthritis and characterize their role in osteoarthritis disease progression.

Background

The paper investigates connexin43 (Cx43) as a regulator of chondrocyte plasticity in osteoarthritis (OA). Prior observations indicate that cartilage from OA patients contains cells exhibiting immature or stem-like markers, but their provenance and functional contribution to disease have not been established.

Clarifying whether these stem-like cells arise from resident chondrocytes via dedifferentiation or represent a distinct progenitor population, and defining their impact on cartilage degeneration, is crucial for understanding OA pathogenesis and for developing targeted regenerative therapies.

References

Although immature or stem-like cells are present in cartilage from OA patients, their origin and role in disease progression are unknown.

— Targeting of chondrocyte plasticity via connexin43 modulation attenuates cellular senescence and fosters a pro-regenerative environment in osteoarthritis  (2402.00624 - Varela-Eirin et al., 2024) in Abstract, page 1