LRP1 Mediates Endocytosis Activity and Is a Potential Therapeutic Target in Osteoarthritis

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Osteoarthritis (OA) is a degenerative disease characterized by cartilage abrasion and pain, affecting millions globally. However, current treatments focus on symptom management rather than modifying disease development. Recent studies have indicated that low-density lipoprotein receptor-related protein 1 (LRP1) is associated with maintaining cartilage homeostasis through its involvement in endocytosis and signaling pathways. LRP1 facilitates the removal of extracellular matrix (ECM)-degrading enzymes, including a disintegrin and metalloproteinase with thrombospondin motifs (ADAMTSs) and matrix metalloproteinases (MMPs), thereby protecting against excessive cartilage breakdown. However, OA cartilage shows increased shedding of LRP1, leading to reduced endocytic capacity and elevated levels of these enzymes, contributing to accelerated ECM breakdown. LRP1 is also involved in key signaling pathways, such as Wnt/β-catenin, transforming growth factor-beta (TGF-β), and nuclear factor-kappa B (NF-κB), which regulate processes like chondrocyte proliferation, apoptosis, differentiation, and autophagy. Dysregulation of these pathways, combined with impaired LRP1-mediated endocytosis, fosters a catabolic environment in osteoarthritic cartilage. Emerging therapies targeting LRP1, such as gene interventions, exosome-based therapies, and small-molecule modulators, show potential in restoring

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

Browse all related research

Filter the research library by this study's title keywords, author, or publication year.