PMID- 33812074 OWN - NLM STAT- MEDLINE DCOM- 20210531 LR - 20210531 IS - 1878-7568 (Electronic) IS - 1742-7061 (Linking) VI - 127 DP - 2021 Jun TI - Cell-free decellularized cartilage extracellular matrix scaffolds combined with interleukin 4 promote osteochondral repair through immunomodulatory macrophages: In vitro and in vivo preclinical study. PG - 131-145 LID - S1742-7061(21)00204-X [pii] LID - 10.1016/j.actbio.2021.03.054 [doi] AB - Cartilage regeneration is a complex physiological process. Synovial macrophages play a critical immunomodulatory role in the acute inflammatory response surrounding joint injury. Due to the contrasting differences and heterogeneity of macrophage, the phenotype of macrophages are the key determinants of the healing response after cartilage injury. Biomaterials derived from extracellular matrix have been used for the repair and reconstruction of a variety of tissues by modulating the host macrophage response. However, the immunomodulatory effect of decellularized cartilage extracellular matrix (ECM) on macrophages has not been elucidated. It is necessary to clarify the immunomodulatory properties of decellularized cartilage matrix (DCM) to guide the design of cartilage regeneration materials. Here, we prepared porcine articular cartilage derived DCM and determined the response of mouse bone marrow-derived macrophages (BMDMs) to the pepsin-solubilized DCM (PDCM) in vitro. Macrophages activated by the PDCM could promote bone marrow-derived mesenchymal stem cells (BMSCs) invasion, migration, proliferation, and chondrogenic differentiation. Then, we verified that early optimization of the immunomodulatory effects of the cell-free DCM scaffold using IL-4 in vivo could achieve good cartilage regeneration in a rat knee osteochondral defect model. Therefore, this decellularized cartilage ECM scaffold combined with accurate and active immunomodulatory strategies provides a new approach for the development of cartilage regeneration materials. STATEMENT OF SIGNIFICANCE: This work reports a decellularized cartilage extracellular matrix (DCM) scaffold combined with an accurate and active immunomodulatory strategy to improve cartilage regeneration. Our findings demonstrated that the pepsin-solubilized DCM (PDCM) activated bone marrow-derived macrophages to polarize to a constructive macrophage phenotype. These polarized macrophages promoted bone marrow-derived mesenchymal stem cell invasion, migration, proliferation, and chondrogenic differentiation. DCM scaffolds combined with early-stage intra-articular injection of IL-4 created a wound-healing microenvironment and improved cartilage regeneration in a rat knee osteochondral defect model. CI - Copyright (c) 2021 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Tian, Guangzhao AU - Tian G AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China; School of Medicine, Nankai University, Tianjin 300071, China. FAU - Jiang, Shuangpeng AU - Jiang S AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. FAU - Li, Junqi AU - Li J AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. FAU - Wei, Fu AU - Wei F AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. FAU - Li, Xu AU - Li X AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. FAU - Ding, Yi AU - Ding Y AD - State Key Laboratory of Proteomics, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, 100850 Beijing, China. FAU - Yang, Zhen AU - Yang Z AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China; School of Medicine, Nankai University, Tianjin 300071, China. FAU - Sun, Zhiqiang AU - Sun Z AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China; School of Medicine, Nankai University, Tianjin 300071, China. FAU - Zha, Kangkang AU - Zha K AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China; School of Medicine, Nankai University, Tianjin 300071, China. FAU - Wang, FuXin AU - Wang F AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. FAU - Huang, Bo AU - Huang B AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. FAU - Peng, Liqing AU - Peng L AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. FAU - Wang, Qiuming AU - Wang Q AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. FAU - Tian, Zhuang AU - Tian Z AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. FAU - Yang, Xi AU - Yang X AD - State Key Laboratory of Proteomics, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, 100850 Beijing, China; General Hospital of Xinjiang Military Command, 830000 Urumqi, China. FAU - Wang, Zhigang AU - Wang Z AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China. FAU - Guo, Quanyi AU - Guo Q AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. Electronic address: doctorguo_301@163.com. FAU - Guo, Weimin AU - Guo W AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China; Department of Orthopedic Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China. Electronic address: guowm5@mail.sysu.edu.cn. FAU - Liu, Shuyun AU - Liu S AD - Institute of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries PLA, No. 28 Fuxing Road, Haidian District, Beijing 100853, China. Electronic address: clear_ann@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210331 PL - England TA - Acta Biomater JT - Acta biomaterialia JID - 101233144 RN - 207137-56-2 (Interleukin-4) SB - IM MH - Animals MH - *Cartilage, Articular MH - Chondrogenesis MH - Extracellular Matrix MH - *Interleukin-4 MH - Macrophages MH - Mice MH - Rats MH - Swine MH - Tissue Engineering MH - Tissue Scaffolds OTO - NOTNLM OT - Cartilage tissue engineering OT - Decellularized extracellular matrix OT - Immunomodulation OT - Macrophage polarization OT - Stem cell recruitment COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/04/04 06:00 MHDA- 2021/06/01 06:00 CRDT- 2021/04/03 20:12 PHST- 2021/01/27 00:00 [received] PHST- 2021/03/05 00:00 [revised] PHST- 2021/03/23 00:00 [accepted] PHST- 2021/04/04 06:00 [pubmed] PHST- 2021/06/01 06:00 [medline] PHST- 2021/04/03 20:12 [entrez] AID - S1742-7061(21)00204-X [pii] AID - 10.1016/j.actbio.2021.03.054 [doi] PST - ppublish SO - Acta Biomater. 2021 Jun;127:131-145. doi: 10.1016/j.actbio.2021.03.054. Epub 2021 Mar 31.