Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD, 4059, Australia; School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, QLD, 4059, Australia; Herston Biofabrication Institute, Metro North Hospital and Health Services, Herston, QLD, 4006, Australia.
Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD, 4059, Australia; School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, QLD, 4059, Australia; Critical Care Research Group, The Prince Charles Hospital, Brisbane, QLD, 4035, Australia.
Acta Biomater. 2022 Jan 15;138:92-111. doi: 10.1016/j.actbio.2021.11.012. Epub 2021 Nov 13.
Current clinical treatment strategies for the bypassing of small diameter (<6 mm) blood vessels in the management of cardiovascular disease frequently fail due to a lack of suitable autologous grafts, as well as infection, thrombosis, and intimal hyperplasia associated with synthetic grafts. The rapid advancement of 3D printing and regenerative medicine technologies enabling the manufacture of biological, tissue-engineered vascular grafts (TEVGs) with the ability to integrate, remodel, and repair in vivo, promises a paradigm shift in cardiovascular disease management. This review comprehensively covers current state-of-the-art biofabrication technologies for the development of biomimetic TEVGs. Various scaffold based additive manufacturing methods used in vascular tissue engineering, including 3D printing, bioprinting, electrospinning and melt electrowriting, are discussed and assessed against the biomechanical and functional requirements of human vasculature, while the efficacy of decellularization protocols currently applied to engineered and native vessels are evaluated. Further, we provide interdisciplinary insight into the outlook of regenerative medicine for the development of vascular grafts, exploring key considerations and perspectives for the successful clinical integration of evolving technologies. It is expected that continued advancements in microscale additive manufacturing, biofabrication, tissue engineering and decellularization will culminate in the development of clinically viable, off-the-shelf TEVGs for small diameter applications in the near future. STATEMENT OF SIGNIFICANCE: Current clinical strategies for the management of cardiovascular disease using small diameter vessel bypassing procedures are inadequate, with up to 75% of synthetic grafts failing within 3 years of implantation. It is this critically important clinical problem that researchers in the field of vascular tissue engineering and regenerative medicine aim to alleviate using biofabrication methods combining additive manufacturing, biomaterials science and advanced cellular biology. While many approaches facilitate the development of bioengineered constructs which mimic the structure and function of native blood vessels, several challenges must still be overcome for clinical translation of the next generation of tissue-engineered vascular grafts.
目前,在心血管疾病的治疗中,对于小直径(<6mm)血管的旁路处理,由于缺乏合适的自体移植物,以及合成移植物相关的感染、血栓形成和内膜增生,临床治疗策略经常失败。3D 打印和再生医学技术的快速发展使得能够制造具有体内整合、重塑和修复能力的生物、组织工程血管移植物(TEVGs),有望彻底改变心血管疾病的治疗模式。本综述全面介绍了用于开发仿生 TEVGs 的最新生物制造技术。讨论了各种基于支架的血管组织工程增材制造方法,包括 3D 打印、生物打印、静电纺丝和熔融电纺,以及它们与人体血管的生物力学和功能要求的对比,同时评估了目前用于工程化和天然血管的脱细胞化方案的效果。此外,我们还提供了再生医学在血管移植物开发方面的跨学科见解,探讨了成功实现新兴技术临床整合的关键考虑因素和观点。预计在微尺度增材制造、生物制造、组织工程和脱细胞化方面的持续进展,将在不久的将来促成具有临床可行性的、即用型的小直径 TEVGs 的开发。
意义声明:目前,使用小直径血管旁路手术治疗心血管疾病的临床策略并不完善,高达 75%的合成移植物在植入后 3 年内失效。正是这个至关重要的临床问题,使得血管组织工程和再生医学领域的研究人员旨在使用结合增材制造、生物材料科学和先进细胞生物学的生物制造方法来缓解。虽然许多方法都有助于开发模仿天然血管结构和功能的生物工程构建体,但在下一代组织工程血管移植物的临床转化中,仍有几个挑战需要克服。
Acta Biomater. 2022-1-15
Acta Biomater. 2017-3-15
Acta Biomater. 2023-1-15
Biomaterials. 2023-11
Handchir Mikrochir Plast Chir. 2018-4
J Nanobiotechnology. 2025-8-20
Int J Nanomedicine. 2025-6-14
Small Sci. 2024-9-10