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Song B, Fang L, Mao X, Ye X, Yan Z, Ma Q, Shi Z, Hu Y, Zhu Y, Cheng Y. Gelatin-grafted tubular asymmetric scaffolds promote ureteral regeneration via activation of the integrin/Erk signaling pathway. Front Bioeng Biotechnol 2023; 10:1092543. [PMID: 36686259 PMCID: PMC9849368 DOI: 10.3389/fbioe.2022.1092543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/13/2022] [Indexed: 01/06/2023] Open
Abstract
Introduction: The repair of a diseased ureter is an urgent clinical issue that needs to be solved. A tissue-engineered scaffold for ureteral replacement is currently insufficient due to its incompetent bioactivity, especially in long-segment abnormalities. The primary reason is the failure of urothelialization on scaffolds. Methods: In this work, we investigated the ability of gelatin-grafted tubular scaffold in ureteral repairment and its related biological mechanism. We designed various porous asymmetric poly (L-lactic acid) (PLLA)/poly (L-lactide-co-e-caprolactone) (PLCL) tubes with a thermally induced phase separation (TIPS) method via a change in the ratio of solvents (named PP). To regulate the phenotype of urothelial cells and ureteral reconstruction, gelatin was grafted onto the tubular scaffold using ammonolysis and glutaraldehyde crosslinking (named PP-gel). The in vitro and in vivo experiments were performed to test the biological function and the mechanism of the scaffolds. Results and Discussion: The hydrophilicity of the scaffold significantly increased after gelatin grafting, which promoted the adhesion and proliferation of urothelial cells. Through subcutaneous implantation in rats, PP-gel scaffolds demonstrated good biocompatibility. The in vivo replacement showed that PP-gel could improve urothelium regeneration and maintain renal function after the ureter was replaced with an ∼4 cm-long PP-gel tube using New Zealand rabbits as the experimental animals. The related biologic mechanism of ureteral reconstruction was detected in detail. The gelatin-grafted scaffold upgraded the integrin α6/β4 on the urothelial cell membrane, which phosphorylates the focal adhesion kinase (FAK) and enhances urothelialization via the MAPK/Erk signaling pathway. Conclusion: All these results confirmed that the PP46-gel scaffold is a promising candidate for the constitution of an engineered ureter and to repair long-segment ureteral defects.
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Affiliation(s)
- Baiyang Song
- School of Medicine, Ningbo University, Ningbo, China,Department of Urology, Ningbo First Hospital, Ningbo, China
| | - Li Fang
- Department of Urology, Ningbo First Hospital, Ningbo, China,Ningbo Clinical Research Center for Urological Disease, Ningbo, China
| | - Xufeng Mao
- School of Medicine, Ningbo University, Ningbo, China
| | - Xianwang Ye
- Department of Radiology, Ningbo First Hospital, Ningbo, China
| | - Zejun Yan
- Department of Urology, Ningbo First Hospital, Ningbo, China,Ningbo Clinical Research Center for Urological Disease, Ningbo, China
| | - Qi Ma
- Department of Urology, Ningbo First Hospital, Ningbo, China,Ningbo Clinical Research Center for Urological Disease, Ningbo, China
| | - Zewen Shi
- School of Medicine, Ningbo University, Ningbo, China
| | - Yiwei Hu
- School of Medicine, Ningbo University, Ningbo, China
| | - Yabin Zhu
- School of Medicine, Ningbo University, Ningbo, China,*Correspondence: Yabin Zhu, ; Yue Cheng,
| | - Yue Cheng
- Department of Urology, Ningbo First Hospital, Ningbo, China,Ningbo Clinical Research Center for Urological Disease, Ningbo, China,*Correspondence: Yabin Zhu, ; Yue Cheng,
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Biomedical polymers: synthesis, properties, and applications. Sci China Chem 2022; 65:1010-1075. [PMID: 35505924 PMCID: PMC9050484 DOI: 10.1007/s11426-022-1243-5] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/01/2022] [Indexed: 02/07/2023]
Abstract
Biomedical polymers have been extensively developed for promising applications in a lot of biomedical fields, such as therapeutic medicine delivery, disease detection and diagnosis, biosensing, regenerative medicine, and disease treatment. In this review, we summarize the most recent advances in the synthesis and application of biomedical polymers, and discuss the comprehensive understanding of their property-function relationship for corresponding biomedical applications. In particular, a few burgeoning bioactive polymers, such as peptide/biomembrane/microorganism/cell-based biomedical polymers, are also introduced and highlighted as the emerging biomaterials for cancer precision therapy. Furthermore, the foreseeable challenges and outlook of the development of more efficient, healthier and safer biomedical polymers are discussed. We wish this systemic and comprehensive review on highlighting frontier progress of biomedical polymers could inspire and promote new breakthrough in fundamental research and clinical translation.
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Yuan S, Sun X, Shen Y, Li Z. Bioactive Poly(4-hydroxybutyrate)/Poly(ethylene glycol) Fibrous Dressings Incorporated with Zinc Oxide Nanoparticles for Efficient Antibacterial Therapy and Rapid Clotting. Macromol Biosci 2022; 22:e2100524. [PMID: 35358371 DOI: 10.1002/mabi.202100524] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 03/09/2022] [Indexed: 11/08/2022]
Abstract
Antibacterial and hemostatic. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Shuaishuai Yuan
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China.,National Engineering Laboratory of Medical Implantable Devices & Key Laboratory for Medical Implantable Devices of Shandong Province, WEGO Holding Company Limited, Weihai, 264210, P. R. China
| | - Xiuxia Sun
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China
| | - Yong Shen
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China.,College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China
| | - Zhibo Li
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China.,College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China
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Bian Q, Chen J, Weng Y, Li S. Endothelialization strategy of implant materials surface: The newest research in recent 5 years. J Appl Biomater Funct Mater 2022; 20:22808000221105332. [PMID: 35666145 DOI: 10.1177/22808000221105332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In recent years, more and more metal or non-metal materials have been used in the treatment of cardiovascular diseases, but the vascular complications after transplantation are still the main factors restricting the clinical application of most grafts, such as acute thrombosis and graft restenosis. Implant materials have been extensively designed and surface optimized by researchers, but it is still too difficult to avoid complications. Natural vascular endodermis has excellent function, anti-coagulant and anti-intimal hyperplasia, and it is also the key to maintaining the homeostasis of normal vascular microenvironment. Therefore, how to promote the adhesion of endothelial cells (ECs) on the surface of cardiovascular materials to achieve endothelialization of the surface is the key to overcoming the complications after implant materialization. At present, the surface endothelialization design of materials based on materials surface science, bioactive molecules, and biological function intervention and feedback has attracted much attention. In this review, we summarize the related research on the surface modification of materials by endothelialization in recent years, and analyze the advantages and challenges of current endothelialization design ideas, explain the relationship between materials, cells, and vascular remodeling in order to find a more ideal endothelialization surface modification strategy for future researchers to meet the requirements of clinical biocompatibility of cardiovascular materials.
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Affiliation(s)
- Qihao Bian
- Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.,School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Junying Chen
- Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Yajun Weng
- Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Suiyan Li
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
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Yang J, Zhu Z, Liu Y, Zheng Y, Xie Y, Lin J, Cai T. Double-Modified Bacterial Cellulose/Soy Protein Isolate Composites by Laser Hole Forming and Selective Oxidation Used for Urethral Repair. Biomacromolecules 2021; 23:291-302. [PMID: 34874163 DOI: 10.1021/acs.biomac.1c01268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this study, a double-modified bacterial cellulose/soybean protein isolate (DMBC/SPI), a new type of urethral tissue engineering scaffold with good biocompatibility, biodegradability, and cell-oriented growth, was prepared. Bacterial cellulose (BC) was physically and chemically modified by laser hole forming and selective oxidation to obtain the double-modified bacterial cellulose (DMBC). The soybean protein isolate (SPI) was compounded on DMBC to obtain DMBC/SPI with better biocompatibility. DMBC/SPI was used to repair the damaged urethra in rabbits. The results showed that DMBC/SPI was beneficial to heal the damaged urethra and did not cause a milder inflammatory response. The repaired urethra was smooth and continuous. DMBC/SPI has a good urethral repair effect and is expected to be used as a new urethral reconstruction material in clinical applications. In addition, FT-IR spectroscopy, SEM, static contact angle measurements, mechanical property investigation, and cell experiments were also performed to characterize the properties of DMBC/SPI composites.
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Affiliation(s)
- Jiayu Yang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhenpeng Zhu
- Department of Urology, Peking University First Hospital, Beijing 100034, China
| | - Yang Liu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yudong Zheng
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yajie Xie
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jian Lin
- Department of Urology, Peking University First Hospital, Beijing 100034, China
| | - Tianyu Cai
- Department of Urology, Peking University First Hospital, Beijing 100034, China
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