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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
Growth of Cartilage and Bone Tissue01:27

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Related Experiment Video

Updated: May 9, 2026

Fabrication of Decellularized Cartilage-derived Matrix Scaffolds
08:02

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A Bio-inspired Latent TGF-β Conjugated Scaffold Improves Neocartilage Development.

Tianbai Wang, Celina C Maldonado, Bor-Lin Huang

    Biorxiv : the Preprint Server for Biology
    |February 20, 2025
    PubMed
    Summary

    Latent TGF-β conjugated scaffolds promote engineered cartilage development by mimicking native conditions. This bio-inspired approach improves neocartilage quality and reduces detrimental features compared to traditional methods.

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    Area of Science:

    • Biomaterials Engineering
    • Tissue Engineering
    • Regenerative Medicine

    Background:

    • Conventional cartilage tissue engineering uses high doses of active TGF-β, leading to detrimental tissue properties like swelling and hypertrophy.
    • Native cartilage development involves controlled, localized TGF-β release from latent complexes (LTGF-β), promoting healthy matrix synthesis.
    • Current methods struggle to replicate the controlled, physiologic dosing found in natural cartilage formation.

    Purpose of the Study:

    • To investigate a bio-inspired strategy using LTGF-β-conjugated scaffolds for improved neocartilage development.
    • To compare the efficacy of LTGF-β scaffolds against conventional active TGF-β media supplementation (MS) at various doses.
    • To assess the impact on neocartilage composition, structure, mechanical properties, and cell phenotype.

    Main Methods:

    • Bovine chondrocyte-seeded agarose constructs were cultured using LTGF-β scaffolds.
    • Comparison groups included active TGF-β MS at 0.3 ng/mL (MS-0.3) and 10 ng/mL (MS-10), and a TGF-β-free control.
    • Evaluated small (3x2 mm) and large constructs for mechanical properties, sGAG content, cell morphology, collagen distribution, and gene expression (COL-I, COL-X).

    Main Results:

    • LTGF-β scaffolds produced small neocartilage constructs with native-matched mechanical properties (800-925 kPa) and sGAG content (6.6%-7.1%).
    • These constructs exhibited hyaline cartilage-like cell morphology and collagen distribution, with significantly reduced COL-I and COL-X expression.
    • For large constructs, LTGF-β scaffolds minimized mechanical and biochemical heterogeneities compared to MS-0.3 and MS-10.

    Conclusions:

    • LTGF-β-conjugated scaffolds offer a superior strategy for neocartilage engineering by providing controlled TGF-β release.
    • This approach enhances neocartilage quality, promoting a more native-like composition, structure, and cell phenotype.
    • LTGF-β scaffolds hold promise for improving cartilage repair strategies, particularly for larger constructs.