BMSCs-assisted injectable Col I hydrogel-regenerated cartilage defect by reconstructing superficial and calcified cartilage

Regenerative Biomaterials
Hanxu CaiXingdong Zhang

Abstract

The self-healing capacity of cartilage was limited due to absence of vascular, nervous and lymphatic systems. Although many clinical treatments have been used in cartilage defect repair and shown a promising repair result in short term, however, regeneration of complete zonal structure with physiological function, reconstruction cartilage homeostasis and maintaining long-term repair was still an unbridgeable chasm. Cartilage has complex zonal structure and multiple physiological functions, especially, superficial and calcified cartilage played an important role in keeping homeostasis. To address this hurdle of regenerating superficial and calcified cartilage, injectable tissue-induced type I collagen (Col I) hydrogel-encapsulated BMSCs was chosen to repair cartilage damage. After 1 month implantation, the results demonstrated that Col I gel was able to induce BMSCs differentiation into chondrocytes, and formed hyaline-like cartilage and the superficial layer with lubrication function. After 3 months post-surgery, chondrocytes at the bottom of the cartilage layer would undergo hypertrophy and promote the regeneration of calcified cartilage. Six months later, a continuous anatomical tidemark and complete calcified interface were ...Continue Reading

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Citations

Mar 19, 2021·Regenerative Biomaterials·Manyu ChenXingdong Zhang
Apr 16, 2021·Acta Biomaterialia·Jiayue ShiJiandong Ding
Oct 20, 2020·Journal of Oral Biology and Craniofacial Research·Divya MehrotraR K Singh

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Methods Mentioned

BETA
scanning electron microscopy

Software Mentioned

SPSS

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