Magnesium enhances adherence and cartilage formation of synovial mesenchymal stem cells through integrins

Osteoarthritis and Cartilage
M ShimayaI Sekiya

Abstract

We previously reported that more than 60% of synovial mesenchymal stem cells (MSCs) placed on osteochondral defects adhered to the defect within 10 min and promoted cartilage regeneration. The efficiency of adherence is considered to depend on the interaction between cells and extracellular matrix (ECM), in which integrins may play some important roles. Divalent cations such as calcium, magnesium, and manganese may affect functions of integrins, and the integrins may be involved in differentiation of MSCs. Among divalent cations, magnesium is used in clinical practice as a therapeutic agent and increases the affinity of integrin to ECM. In this study, we investigated whether magnesium enhanced adherence and chondrogenesis of synovial MSC through integrins. We performed assays for adherence of human synovial MSCs to collagen-coated slides, in vitro chondrogenesis, ex vivo assays for adherence of human synovial MSCs to osteochondral defect, and in vivo assays for adherence and cartilage formation of synovial MSCs in a rabbit osteochondral defect model. Magnesium increased adhesion of human synovial MSCs to collagen, and this effect was inhibited by neutralizing antibodies for integrin α3 and β1. Magnesium also promoted synthesis ...Continue Reading

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Citations

Aug 22, 2012·Annals of Biomedical Engineering·Olivia S Beane, Eric M Darling
Jan 24, 2016·Life Sciences·Yaqiang LiChunxi Yang
Feb 7, 2016·Biomaterials·Daniel M VasconcelosMário A Barbosa
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May 8, 2018·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Mana NaritomiIchiro Sekiya
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