Chemically defined serum-free medium has been shown to maintain the mechanical properties of cartilage allografts better than serum supplemented medium during long-term in vitro culture . Little is known about this beneficial mechanism at a cellular level. Intracellular calcium ([Ca2+]i) signaling is one of the earliest responses in chondrocytes under mechanical stimulation . It was recently found that calcium signaling is involved in the regulation of chondrocyte morphology changes and its short-term anabolic and catabolic responses under mechanical stimulation . In this study we hypothesized that the beneficial mechanisms of serum-free culture could be indicated by the spatiotemporal features of [Ca2+]i signaling of chondrocytes in situ. We aimed to: (i) compare the in situ spontaneous [Ca2+]i responses of chondrocytes cultured in medium with and without serum; (ii) investigate the correlation between the [Ca2+]i responses of chondrocytes and the biomechanical properties of cartilage explants.
- Bioengineering Division
In Situ Calcium Signaling of Chondrocytes Under Non-Serum and Serum Culture
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Zhou, Y, Resutek, L, Wang, L, & Lu, XL. "In Situ Calcium Signaling of Chondrocytes Under Non-Serum and Serum Culture." Proceedings of the ASME 2013 Summer Bioengineering Conference. Volume 1A: Abdominal Aortic Aneurysms; Active and Reactive Soft Matter; Atherosclerosis; BioFluid Mechanics; Education; Biotransport Phenomena; Bone, Joint and Spine Mechanics; Brain Injury; Cardiac Mechanics; Cardiovascular Devices, Fluids and Imaging; Cartilage and Disc Mechanics; Cell and Tissue Engineering; Cerebral Aneurysms; Computational Biofluid Dynamics; Device Design, Human Dynamics, and Rehabilitation; Drug Delivery and Disease Treatment; Engineered Cellular Environments. Sunriver, Oregon, USA. June 26–29, 2013. V01AT17A024. ASME. https://doi.org/10.1115/SBC2013-14624
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