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Yin H, Wang J, Gu Z, Feng W, Gao M, Wu Y, Zheng H, He X, Mo X. Evaluation of the potential of kartogenin encapsulated poly(L-lactic acid-co-caprolactone)/collagen nanofibers for tracheal cartilage regeneration. J Biomater Appl 2017; 32:331-341. [PMID: 28658997 DOI: 10.1177/0885328217717077] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Tracheal stenosis is one of major challenging issues in clinical medicine because of the poor intrinsic ability of tracheal cartilage for repair. Tissue engineering provides an alternative method for the treatment of tracheal defects by generating replacement tracheal structures. In this study, we fabricated coaxial electrospun fibers using poly(L-lactic acid-co-caprolactone) and collagen solution as shell fluid and kartogenin solution as core fluid. Scanning electron microscope and transmission electron microscope images demonstrated that nanofibers had uniform and smooth structure. The kartogenin released from the scaffolds in a sustained and stable manner for about 2 months. The bioactivity of released kartogenin was evaluated by its effect on maintain the synthesis of type II collagen and glycosaminoglycans by chondrocytes. The proliferation and morphology analyses of mesenchymal stems cells derived from bone marrow of rabbits indicated the good biocompatibility of the fabricated nanofibrous scaffold. Meanwhile, the chondrogenic differentiation of bone marrow mesenchymal stem cells cultured on core-shell nanofibrous scaffold was evaluated by real-time polymerase chain reaction. The results suggested that the core-shell nanofibrous scaffold with kartogenin could promote the chondrogenic differentiation ability of bone marrow mesenchymal stem cells. Overall, the core-shell nanofibrous scaffold could be an effective delivery system for kartogenin and served as a promising tissue engineered scaffold for tracheal cartilage regeneration.
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Affiliation(s)
- Haiyue Yin
- 1 Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
| | - Juan Wang
- 1 Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
| | - Ziqi Gu
- 1 Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
| | - Wenhao Feng
- 1 Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
| | - Manchen Gao
- 2 Department of Pediatric Cardiothoracic Surgery, Shanghai Children's Medical Center affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Wu
- 1 Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
| | - Hao Zheng
- 1 Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China.,3 State Key Laboratory of Polymer Materials Engineering, Sichuan University, Sichuan, China
| | - Xiaomin He
- 2 Department of Pediatric Cardiothoracic Surgery, Shanghai Children's Medical Center affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiumei Mo
- 1 Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
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Dai J, Yu D, Wang Y, Chen Y, Sun H, Zhang X, Zhu S, Pan Z, Heng BC, Zhang S, Ouyang H. Kdm6b regulates cartilage development and homeostasis through anabolic metabolism. Ann Rheum Dis 2017; 76:1295-1303. [PMID: 28314754 DOI: 10.1136/annrheumdis-2016-210407] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 01/22/2017] [Accepted: 02/21/2017] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Epigenetic mechanisms have been reported to play key roles in chondrogenesis and osteoarthritis (OA) development. Here, we sought to identify specific histone demethylases that are involved and delineate the underlying mechanisms. METHODS We screened the expression of 17 distinct histone demethylases by quantitative real time PCR (qRT-PCR) during chondrogenic differentiation of C3H10T1/2 cells. The role of Kdm6b in cartilage development was then analysed with transgenic Col2a1-CreERT2;Kdm6bf/f . RNA-Seq was applied to explore the underlying changes in chondrocytes upon knockdown of Kdm6b. Experimental OA in mice was induced by destabilisation of the medial meniscus in C57BL/6J (wild type, Kdm6bf/f and Col2a1-CreERT2;Kdm6bf/f ) mice, either with intra-articular injection of shKdm6b lentivirus or after tamoxifen treatment. Mouse joints and human cartilage samples were used for histological analysis. RESULTS Kdm6b expression was significantly increased during cartilage development. Col2a1-CreERT2;Kdm6bf/f mice displayed obvious skeletal abnormalities at E16.5 and E18.5 with intraperitoneal injection of tamoxifen at E12.5. RNA-Seq and qRT-PCR analyses revealed decreased expression of chondrocyte anabolic genes in Col2a1-CreERT2;Kdm6bf/f chondrocytes. The histological OA score was significantly higher in mice injected with Kdm6b short hairpin RNA lentivirus. Col2a1-CreERT2;Kdm6bf/f mice exhibited accelerated OA development at 8 and 12 weeks following surgical induction. The number of Kdm6b-positive chondrocytes was lower in both mice and human OA cartilage samples. CONCLUSIONS These findings indicate that knockdown of Kdm6b in chondrocytes leads to abnormal cartilage development and accelerated OA progression via inhibition of the anabolic metabolism of chondrocytes. Understanding the epigenetic mechanism of joint cartilage development and homeostasis would be useful for development of new therapeutic modalities for OA.
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Affiliation(s)
- Jun Dai
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China
| | - Dongsheng Yu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China.,Department of Sports Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yafei Wang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China
| | - Yishan Chen
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China
| | - Heng Sun
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China
| | - Xiaolei Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China
| | - Shouan Zhu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China
| | - Zongyou Pan
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China
| | - Boon Chin Heng
- Endodontology, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong
| | - Shufang Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China
| | - Hongwei Ouyang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Zhejiang, China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China.,Department of Sports Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,China Orthopedic Regenerative Medicine Group, Hangzhou, China
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