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Zhao J, Zhang H, Ling Z, An Z, Xiao S, Wang P, Fu Z, Shao J, Sun Y, Fu W. A bilayer bioengineered patch with sequential dual-growth factor release to promote vascularization in bladder reconstruction. Regen Biomater 2024; 11:rbae083. [PMID: 39077683 PMCID: PMC11286312 DOI: 10.1093/rb/rbae083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 06/15/2024] [Accepted: 06/25/2024] [Indexed: 07/31/2024] Open
Abstract
Bladder tissue engineering holds promise for addressing bladder defects resulting from congenital or acquired bladder diseases. However, inadequate vascularization significantly impacts the survival and function of engineered tissues after transplantation. Herein, a novel bilayer silk fibroin (BSF) scaffold was fabricated with the capability of vascular endothelial growth factor (VEGF) and platelet derived growth factor-BB (PDGF-BB) sequential release. The outer layer of the scaffold was composed of compact SF film with waterproofness to mimic the serosa of the bladder. The inner layer was constructed of porous SF matrix incorporated with SF microspheres (MS) loaded with VEGF and PDGF-BB. We found that the 5% (w/v) MS-incorporated scaffold exhibited a rapid release of VEGF, whereas the 0.2% (w/v) MS-incorporated scaffold demonstrated a slow and sustained release of PDGF-BB. The BSF scaffold exhibited good biocompatibility and promoted endothelial cell migration, tube formation and enhanced endothelial differentiation of adipose derived stem cells (ADSCs) in vitro. The BSF patch was constructed by seeding ADSCs on the BSF scaffold. After in vivo transplantation, not only could the BSF patch facilitate the regeneration of urothelium and smooth muscle, but more importantly, stimulate the regeneration of blood vessels. This study demonstrated that the BSF patch exhibited excellent vascularization capability in bladder reconstruction and offered a viable functional bioengineered patch for future clinical studies.
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Affiliation(s)
- Jian Zhao
- Medical School of PLA, Beijing 100853, China
- Department of Urology, The Third Medical Center, PLA General Hospital, Beijing 100039, China
- Department of Urology, 960th Hospital of PLA, Jinan 250031, China
| | - Haoqian Zhang
- Inner Mongolia Medical University, Hohhot, Inner Mongolia 010050, China
| | - Zhengyun Ling
- Department of Urology, The Third Medical Center, PLA General Hospital, Beijing 100039, China
- School of Medicine, Nankai University, Tianjin 300071, China
| | - Ziyan An
- Medical School of PLA, Beijing 100853, China
- Department of Urology, The Third Medical Center, PLA General Hospital, Beijing 100039, China
| | - Shuwei Xiao
- Department of Urology, Air Force Medical Center, Beijing 100142, China
| | - Pengchao Wang
- Department of Urology, The Third Medical Center, PLA General Hospital, Beijing 100039, China
| | - Zhouyang Fu
- Department of Urology, The Third Medical Center, PLA General Hospital, Beijing 100039, China
| | - Jinpeng Shao
- Medical School of PLA, Beijing 100853, China
- Department of Urology, The Third Medical Center, PLA General Hospital, Beijing 100039, China
| | - Yanfeng Sun
- Department of Pediatrics, The Third Medical Center, PLA General Hospital, Beijing 100039, China
| | - Weijun Fu
- Department of Urology, The Third Medical Center, PLA General Hospital, Beijing 100039, China
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Yu S, Sun T, Liu W, Yang L, Gong H, Chen X, Li J, Weng J. PLGA Cage‐like Structures Loaded with Sr/Mg‐doped Hydroxyapatite for Repairing Osteoporotic Bone Defects. Macromol Biosci 2022; 22:e2200092. [DOI: 10.1002/mabi.202200092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/20/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Shangke Yu
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education) School of Materials Science and Engineering Southwest Jiaotong University Chengdu 610031 China
| | - Tong Sun
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education) School of Materials Science and Engineering Southwest Jiaotong University Chengdu 610031 China
| | - Wei Liu
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education) School of Materials Science and Engineering Southwest Jiaotong University Chengdu 610031 China
| | - Lu Yang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education) School of Materials Science and Engineering Southwest Jiaotong University Chengdu 610031 China
| | - Hanwen Gong
- College of Medicine Southwest Jiaotong University Chengdu 610031 China
| | - Xingyu Chen
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education) School of Materials Science and Engineering Southwest Jiaotong University Chengdu 610031 China
- College of Medicine Southwest Jiaotong University Chengdu 610031 China
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P.R. China
| | - Jianshu Li
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 P.R. China
| | - Jie Weng
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education) School of Materials Science and Engineering Southwest Jiaotong University Chengdu 610031 China
- College of Medicine Southwest Jiaotong University Chengdu 610031 China
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Nanocomposite of cosubstituted carbonated hydroxyapatite fabricated inside Poly(sodium hyaluronate-acrylamide) hydrogel template prepared by gamma radiation for osteoblast cell regeneration. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109408] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Cao J, Meng Y, Zhao X, Ye L. Dual-Anchoring Intercalation Structure and Enhanced Bioactivity of Poly(vinyl alcohol)/Graphene Oxide–Hydroxyapatite Nanocomposite Hydrogels as Artificial Cartilage Replacement. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03950] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jinlong Cao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Yeqiao Meng
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
- School of System Design and Intelligent Manufacturing, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiaowen Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
| | - Lin Ye
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
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