PMID- 38260733 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240124 IS - 2296-4185 (Print) IS - 2296-4185 (Electronic) IS - 2296-4185 (Linking) VI - 11 DP - 2023 TI - Pulmonary decellularized extracellular matrix (dECM) modified polyethylene terephthalate three-dimensional cell carriers regulate the proliferation and paracrine activity of mesenchymal stem cells. PG - 1324424 LID - 10.3389/fbioe.2023.1324424 [doi] LID - 1324424 AB - Introduction: Mesenchymal stem cells (MSCs) possess a high degree of self-renewal capacity and in vitro multi-lineage differentiation potential. Decellularized materials have garnered considerable attention due to their elevated biocompatibility, reduced immunogenicity, excellent biodegradability, and the ability to partially mimic the in vivo microenvironment conducive to cell growth. To address the issue of mesenchymal stem cells losing their stem cell characteristics during two-dimensional (2D) cultivation, this study established three-dimensional cell carriers modified with lung decellularized extracellular matrix and assessed its impact on the life activities of mesenchymal stem cells. Methods: This study employed PET as a substrate material, grafting with polydopamine (PDA), and constructing a decellularized extracellular matrix (dECM) coating on its surface, thus creating the PET/PDA/dECM three-dimensional (3D) composite carrier. Subsequently, material characterization of the cellular carriers was conducted, followed by co-culturing with human umbilical cord mesenchymal stem cells in vitro, aiming to investigate the material's impact on the proliferation and paracrine activity of mesenchymal stem cells. Results and Discussion: Material characterization demonstrated successful grafting of PDA and dECM materials, and it had complete hydrophilicity, high porosity, and excellent mechanical properties. The material was rich in various ECM proteins (collagen I, collagen IV , laminin, fibronectin, elastin), indicating good biocompatibility. In long-term in vitro cultivation (14 days) experiments, the PET/PDA/dECM three-dimensional composite carrier significantly enhanced adhesion and proliferation of human umbilical cord-derived mesenchymal stem cells (HUCMSCs), with a proliferation rate 1.9 times higher than that of cells cultured on tissue culture polystyrene (TCPS) at day 14. Furthermore, it effectively maintained the stem cell characteristics, expressing specific antigens for HUCMSCs. Through qPCR, Western blot, and ELISA experiments, the composite carrier markedly promoted the expression and secretion of key cell factors in HUCMSCs. These results demonstrate that the PET/PDA/dECM composite carrier holds great potential for scaling up MSCs' long-term in vitro cultivation and the production of paracrine factors. CI - Copyright (c) 2024 Li, Zhang, Ye, Wang, Ouyang, Luo and Gong. FAU - Li, Jinze AU - Li J AD - School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, China. FAU - Zhang, Jiali AU - Zhang J AD - School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, China. FAU - Ye, Hao AU - Ye H AD - School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, China. FAU - Wang, Qixuan AU - Wang Q AD - School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, China. FAU - Ouyang, Yanran AU - Ouyang Y AD - School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, China. FAU - Luo, Yuxi AU - Luo Y AD - School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, China. AD - Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, Sun Yat-Sen University, Guangzhou, China. FAU - Gong, Yihong AU - Gong Y AD - School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, China. AD - Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, Sun Yat-Sen University, Guangzhou, China. LA - eng PT - Journal Article DEP - 20240108 PL - Switzerland TA - Front Bioeng Biotechnol JT - Frontiers in bioengineering and biotechnology JID - 101632513 PMC - PMC10800494 OTO - NOTNLM OT - decellularized materials OT - extracellular matrix OT - growth factor expression OT - mesenchymal stem cells OT - tissue engineering 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- 2024/01/23 12:43 MHDA- 2024/01/23 12:44 PMCR- 2023/01/01 CRDT- 2024/01/23 10:39 PHST- 2023/10/19 00:00 [received] PHST- 2023/12/07 00:00 [accepted] PHST- 2024/01/23 12:44 [medline] PHST- 2024/01/23 12:43 [pubmed] PHST- 2024/01/23 10:39 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 1324424 [pii] AID - 10.3389/fbioe.2023.1324424 [doi] PST - epublish SO - Front Bioeng Biotechnol. 2024 Jan 8;11:1324424. doi: 10.3389/fbioe.2023.1324424. eCollection 2023.