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Chen S, Tomov ML, Ning L, Gil CJ, Hwang B, Bauser-Heaton H, Chen H, Serpooshan V. Extrusion-Based 3D Bioprinting of Adhesive Tissue Engineering Scaffolds Using Hybrid Functionalized Hydrogel Bioinks. Adv Biol (Weinh) 2023:e2300124. [PMID: 37132122 DOI: 10.1002/adbi.202300124] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/15/2023] [Indexed: 05/04/2023]
Abstract
Adhesive tissue engineering scaffolds (ATESs) have emerged as an innovative alternative means, replacing sutures and bioglues, to secure the implants onto target tissues. Relying on their intrinsic tissue adhesion characteristics, ATES systems enable minimally invasive delivery of various scaffolds. This study investigates development of the first class of 3D bioprinted ATES constructs using functionalized hydrogel bioinks. Two ATES delivery strategies, in situ printing onto the adherend versus printing and then transferring to the target surface, are tested using two bioprinting methods, embedded versus air printing. Dopamine-modified methacrylated hyaluronic acid (HAMA-Dopa) and gelatin methacrylate (GelMA) are used as the main bioink components, enabling fabrication of scaffolds with enhanced adhesion and crosslinking properties. Results demonstrate that dopamine modification improved adhesive properties of the HAMA-Dopa/GelMA constructs under various loading conditions, while maintaining their structural fidelity, stability, mechanical properties, and biocompatibility. While directly printing onto the adherend yields superior adhesive strength, embedded printing followed by transfer to the target tissue demonstrates greater potential for translational applications. Together, these results demonstrate the potential of bioprinted ATESs as off-the-shelf medical devices for diverse biomedical applications.
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Affiliation(s)
- Shuai Chen
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA, 30322, USA
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing, 100871, China
| | - Martin L Tomov
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA, 30322, USA
| | - Liqun Ning
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA, 30322, USA
- Department of Mechanical Engineering, Cleveland State University, Cleveland, OH, 44115, USA
| | - Carmen J Gil
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA, 30322, USA
| | - Boeun Hwang
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA, 30322, USA
| | - Holly Bauser-Heaton
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA, 30322, USA
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Children's Healthcare of Atlanta, Atlanta, GA, 30322, USA
- Sibley Heart Center at Children's Healthcare of Atlanta, Atlanta, GA, 30322, USA
| | - Haifeng Chen
- Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing, 100871, China
| | - Vahid Serpooshan
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA, 30322, USA
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Children's Healthcare of Atlanta, Atlanta, GA, 30322, USA
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