PMID- 35935481 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220809 IS - 2296-4185 (Print) IS - 2296-4185 (Electronic) IS - 2296-4185 (Linking) VI - 10 DP - 2022 TI - Real-Time MRI Monitoring of GelMA-Based Hydrogel-Loaded Kartogenin for In Situ Cartilage Regeneration. PG - 940735 LID - 10.3389/fbioe.2022.940735 [doi] LID - 940735 AB - The cartilage has poor ability to mount a sufficient healing response. Herein, kartogenin (KGN), an emerging stable non-protein compound with the ability to recruit bone marrow mesenchyme stem cells (BMSCs) to promote chondrogenic differentiation, was grafted onto dopamine-Fe(III) chelating nanoparticles, followed by involving a gelatin- and dextran-based injectable hydrogel to mimic the extracellular matrix to promote cartilage repair. The in vitro results demonstrated that KGN underwent long-term sustained release behavior and availably promoted the deep migration of BMSC cells in yielding hydrogels. Furthermore, in vivo New Zealand white rabbits' cartilage defect model repairing results showed that cartilage defect obtained significant regeneration post operation in the 12th week, and the defect edge almost disappeared compared to adjacent normal cartilage tissue. Meanwhile, the T(2)-weighted magnetic resonance imaging (MRI) property resulting from dissociative Fe (III) can significantly monitor the degradation degree of the implanted hydrogels in the defect site. This integrated diagnosis and treatment system gives insight into cartilage regeneration. CI - Copyright (c) 2022 Zhang, Fang, Zhao, Zhang, Gao, Li, Wang and Xu. FAU - Zhang, Hanyuan AU - Zhang H AD - Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, China. AD - Department of Biological Physics, University of Science and Technology of China, Hefei, China. AD - Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Hefei, China. FAU - Fang, Weijun AU - Fang W AD - School of Basic Medical Sciences, Anhui Medical University, Hefei, China. FAU - Zhao, Tingting AU - Zhao T AD - School of Basic Medical Sciences, Anhui Medical University, Hefei, China. FAU - Zhang, Huabing AU - Zhang H AD - School of Basic Medical Sciences, Anhui Medical University, Hefei, China. FAU - Gao, Liang AU - Gao L AD - Hua Tuo Institute of Medical Innovation (HTIMI), Wuhan, China. AD - Sino Euro Orthopaedics Network, Berlin, Germany. FAU - Li, Jingya AU - Li J AD - Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, China. AD - Department of Biological Physics, University of Science and Technology of China, Hefei, China. FAU - Wang, Rujing AU - Wang R AD - Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, China. FAU - Xu, Weiping AU - Xu W AD - Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, China. AD - Department of Biological Physics, University of Science and Technology of China, Hefei, China. AD - The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China. LA - eng PT - Journal Article DEP - 20220722 PL - Switzerland TA - Front Bioeng Biotechnol JT - Frontiers in bioengineering and biotechnology JID - 101632513 PMC - PMC9354815 OTO - NOTNLM OT - cartilage regeneration OT - dopamine OT - hydrogels OT - kartogenin OT - magnetic resonance imaging (MRI) COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/08/09 06:00 MHDA- 2022/08/09 06:01 PMCR- 2022/01/01 CRDT- 2022/08/08 03:33 PHST- 2022/05/10 00:00 [received] PHST- 2022/06/06 00:00 [accepted] PHST- 2022/08/08 03:33 [entrez] PHST- 2022/08/09 06:00 [pubmed] PHST- 2022/08/09 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 940735 [pii] AID - 10.3389/fbioe.2022.940735 [doi] PST - epublish SO - Front Bioeng Biotechnol. 2022 Jul 22;10:940735. doi: 10.3389/fbioe.2022.940735. eCollection 2022.