PMID- 33356012 OWN - NLM STAT- MEDLINE DCOM- 20211111 LR - 20211111 IS - 1616-5195 (Electronic) IS - 1616-5187 (Linking) VI - 21 IP - 3 DP - 2021 Mar TI - Gradient Mineralized and Porous Double-Network Hydrogel Effectively Induce the Differentiation of BMSCs into Osteochondral Tissue In Vitro for Potential Application in Cartilage Repair. PG - e2000323 LID - 10.1002/mabi.202000323 [doi] AB - At present, it is a considerable challenge to mimic the complex architecture of osteochondral (OC) tissue. In this study, a porous and gradient mineralized double-network hydrogel is synthesized and used to induce bone marrow mesenchymal stem cells (BMSCs) to differentiate into the desired OC tissue depending only on the material and mechanical properties. Physical and chemical characterizations show that hydroxyapatite nanoparticles grow and fill into the pores of the hydrogel, and their content presents a gradient change in different layers of hydrogel. The synthesized hydrogel has excellent mechanical properties and the compression strength with different mineralization degrees varies from 27 to 380 kPa, which fully meets the needs of increased mechanical strength of articular cartilage from the surface to the deep layer. Besides, the synthesized hydrogel has good biocompatibility that can promote the proliferation and growth of BMSCs. More importantly, the results of histochemistry, immunohistochemistry, and real time polymerase chain reaction show that gradient mineralized hydrogel can induce BMSCs to differentiate into the desired chondrocytes and osteoblasts in different layers of hydrogels, indicating that OC tissues can be successfully constructed through a simple induction differentiation of gradient mineralized hydrogel. CI - (c) 2020 Wiley-VCH GmbH. FAU - Fan, Zengjie AU - Fan Z AUID- ORCID: 0000-0002-2865-8475 AD - School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, P. R. China. FAU - Chen, Zizi AU - Chen Z AD - School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, P. R. China. FAU - Zhang, Hui AU - Zhang H AD - School of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, P. R. China. FAU - Nie, Yingying AU - Nie Y AD - Institute of Sensing Technology, Gansu Academy of Sciences, Lanzhou, Gansu, 730000, P. R. China. FAU - Xu, Shumei AU - Xu S AD - Department of General Surgery, the 940th Hospital of Joint Logistics Support Force, PLA, Lanzhou, Gansu, 730050, P. R. China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201223 PL - Germany TA - Macromol Biosci JT - Macromolecular bioscience JID - 101135941 RN - 0 (Collagen Type I) RN - 0 (Collagen Type II) RN - 0 (Hydrogels) RN - 0 (Proteoglycans) RN - 9001-32-5 (Fibrinogen) SB - IM MH - Animals MH - Bone Regeneration/*drug effects MH - Cartilage, Articular/*pathology MH - Cell Differentiation/*drug effects MH - Chondrogenesis/drug effects MH - Coculture Techniques MH - Collagen Type I/metabolism MH - Collagen Type II/metabolism MH - Fibrinogen/metabolism MH - Hydrogels/*pharmacology MH - Mesenchymal Stem Cells/*cytology/drug effects MH - Porosity MH - Proteoglycans/metabolism MH - Rabbits MH - Spectroscopy, Fourier Transform Infrared MH - X-Ray Diffraction OTO - NOTNLM OT - BMSCs OT - cartilage repair OT - double-network hydrogel OT - gradient mineralization OT - osteochondral tissue EDAT- 2020/12/29 06:00 MHDA- 2021/11/12 06:00 CRDT- 2020/12/28 07:45 PHST- 2020/12/02 00:00 [revised] PHST- 2020/09/15 00:00 [received] PHST- 2020/12/29 06:00 [pubmed] PHST- 2021/11/12 06:00 [medline] PHST- 2020/12/28 07:45 [entrez] AID - 10.1002/mabi.202000323 [doi] PST - ppublish SO - Macromol Biosci. 2021 Mar;21(3):e2000323. doi: 10.1002/mabi.202000323. Epub 2020 Dec 23.