Hydrogel-hydroxyapatite-monomeric collagen type-I scaffold with low-frequency electromagnetic field treatment enhances osteochondral repair in rabbits
Abstract Background Cartilage damage is a common medical issue in clinical practice. Complete cartilage repair remains a significant challenge owing to the inferior quality of regenerative tissue. Safe and non-invasive magnetic therapy combined with tissue engineering to repair cartilage may be a pr...
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oai:doaj.org-article:edd0c633f2bd45948604944c65a74d952021-11-14T12:08:05ZHydrogel-hydroxyapatite-monomeric collagen type-I scaffold with low-frequency electromagnetic field treatment enhances osteochondral repair in rabbits10.1186/s13287-021-02638-61757-6512https://doaj.org/article/edd0c633f2bd45948604944c65a74d952021-11-01T00:00:00Zhttps://doi.org/10.1186/s13287-021-02638-6https://doaj.org/toc/1757-6512Abstract Background Cartilage damage is a common medical issue in clinical practice. Complete cartilage repair remains a significant challenge owing to the inferior quality of regenerative tissue. Safe and non-invasive magnetic therapy combined with tissue engineering to repair cartilage may be a promising breakthrough. Methods In this study, a composite scaffold made of Hydroxyapatite-Collagen type-I (HAC) and PLGA-PEG-PLGA thermogel was produced to match the cartilage and subchondral layers in osteochondral defects, respectively. Bone marrow mesenchymal stem cells (BMSC) encapsulated in the thermogel were stimulated by an electromagnetic field (EMF). Effect of EMF on the proliferation and chondrogenic differentiation potential was evaluated in vitro. 4 mm femoral condyle defect was constructed in rabbits. The scaffolds loaded with BMSCs were implanted into the defects with or without EMF treatment. Effects of the combination treatment of the EMF and composite scaffold on rabbit osteochondral defect was detected in vivo. Results In vitro experiments showed that EMF could promote proliferation and chondrogenic differentiation of BMSCs partly by activating the PI3K/AKT/mTOR and Wnt1/LRP6/β-catenin signaling pathway. In vivo results further confirmed that the scaffold with EMF enhances the repair of osteochondral defects in rabbits, and, in particular, cartilage repair. Conclusion Hydrogel-Hydroxyapatite-Monomeric Collagen type-I scaffold with low-frequency EMF treatment has the potential to enhance osteochondral repair.Jiyuan YanChaoxu LiuChang TuRuizhuo ZhangXiangyu TangHao LiHuaixi WangYongzhuang MaYingchi ZhangHua WuGaohong ShengBMCarticleHydrogelHydroxyapatiteMonomeric Collagen type I (Col1)Electromagnetic fieldsOsteochondral defectsMesenchymal stem cellsMedicine (General)R5-920BiochemistryQD415-436ENStem Cell Research & Therapy, Vol 12, Iss 1, Pp 1-21 (2021) |
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DOAJ |
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Hydrogel Hydroxyapatite Monomeric Collagen type I (Col1) Electromagnetic fields Osteochondral defects Mesenchymal stem cells Medicine (General) R5-920 Biochemistry QD415-436 |
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Hydrogel Hydroxyapatite Monomeric Collagen type I (Col1) Electromagnetic fields Osteochondral defects Mesenchymal stem cells Medicine (General) R5-920 Biochemistry QD415-436 Jiyuan Yan Chaoxu Liu Chang Tu Ruizhuo Zhang Xiangyu Tang Hao Li Huaixi Wang Yongzhuang Ma Yingchi Zhang Hua Wu Gaohong Sheng Hydrogel-hydroxyapatite-monomeric collagen type-I scaffold with low-frequency electromagnetic field treatment enhances osteochondral repair in rabbits |
description |
Abstract Background Cartilage damage is a common medical issue in clinical practice. Complete cartilage repair remains a significant challenge owing to the inferior quality of regenerative tissue. Safe and non-invasive magnetic therapy combined with tissue engineering to repair cartilage may be a promising breakthrough. Methods In this study, a composite scaffold made of Hydroxyapatite-Collagen type-I (HAC) and PLGA-PEG-PLGA thermogel was produced to match the cartilage and subchondral layers in osteochondral defects, respectively. Bone marrow mesenchymal stem cells (BMSC) encapsulated in the thermogel were stimulated by an electromagnetic field (EMF). Effect of EMF on the proliferation and chondrogenic differentiation potential was evaluated in vitro. 4 mm femoral condyle defect was constructed in rabbits. The scaffolds loaded with BMSCs were implanted into the defects with or without EMF treatment. Effects of the combination treatment of the EMF and composite scaffold on rabbit osteochondral defect was detected in vivo. Results In vitro experiments showed that EMF could promote proliferation and chondrogenic differentiation of BMSCs partly by activating the PI3K/AKT/mTOR and Wnt1/LRP6/β-catenin signaling pathway. In vivo results further confirmed that the scaffold with EMF enhances the repair of osteochondral defects in rabbits, and, in particular, cartilage repair. Conclusion Hydrogel-Hydroxyapatite-Monomeric Collagen type-I scaffold with low-frequency EMF treatment has the potential to enhance osteochondral repair. |
format |
article |
author |
Jiyuan Yan Chaoxu Liu Chang Tu Ruizhuo Zhang Xiangyu Tang Hao Li Huaixi Wang Yongzhuang Ma Yingchi Zhang Hua Wu Gaohong Sheng |
author_facet |
Jiyuan Yan Chaoxu Liu Chang Tu Ruizhuo Zhang Xiangyu Tang Hao Li Huaixi Wang Yongzhuang Ma Yingchi Zhang Hua Wu Gaohong Sheng |
author_sort |
Jiyuan Yan |
title |
Hydrogel-hydroxyapatite-monomeric collagen type-I scaffold with low-frequency electromagnetic field treatment enhances osteochondral repair in rabbits |
title_short |
Hydrogel-hydroxyapatite-monomeric collagen type-I scaffold with low-frequency electromagnetic field treatment enhances osteochondral repair in rabbits |
title_full |
Hydrogel-hydroxyapatite-monomeric collagen type-I scaffold with low-frequency electromagnetic field treatment enhances osteochondral repair in rabbits |
title_fullStr |
Hydrogel-hydroxyapatite-monomeric collagen type-I scaffold with low-frequency electromagnetic field treatment enhances osteochondral repair in rabbits |
title_full_unstemmed |
Hydrogel-hydroxyapatite-monomeric collagen type-I scaffold with low-frequency electromagnetic field treatment enhances osteochondral repair in rabbits |
title_sort |
hydrogel-hydroxyapatite-monomeric collagen type-i scaffold with low-frequency electromagnetic field treatment enhances osteochondral repair in rabbits |
publisher |
BMC |
publishDate |
2021 |
url |
https://doaj.org/article/edd0c633f2bd45948604944c65a74d95 |
work_keys_str_mv |
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