细胞外基质支架诱导活体带神经肺动脉干的瓣膜发生。

Valvulogenesis of a living, innervated pulmonary root induced by an acellular scaffold.

机构信息

Magdi Yacoub Institute, Harefield, UK.

National Heart and Lung Institute, Imperial College London, London, UK.

出版信息

Commun Biol. 2023 Oct 7;6(1):1017. doi: 10.1038/s42003-023-05383-z.

Abstract

Heart valve disease is a major cause of mortality and morbidity worldwide with no effective medical therapy and no ideal valve substitute emulating the extremely sophisticated functions of a living heart valve. These functions influence survival and quality of life. This has stimulated extensive attempts at tissue engineering "living" heart valves. These attempts utilised combinations of allogeneic/ autologous cells and biological scaffolds with practical, regulatory, and ethical issues. In situ regeneration depends on scaffolds that attract, house and instruct cells and promote connective tissue formation. We describe a surgical, tissue-engineered, anatomically precise, novel off-the-shelf, acellular, synthetic scaffold inducing a rapid process of morphogenesis involving relevant cell types, extracellular matrix, regulatory elements including nerves and humoral components. This process relies on specific material characteristics, design and "morphodynamism".

摘要

心脏瓣膜疾病是全球范围内导致死亡和发病的主要原因,目前尚无有效的医学治疗方法,也没有理想的瓣膜替代物能够模拟活心脏瓣膜的极其复杂的功能。这些功能影响生存和生活质量。这刺激了广泛的组织工程“活”心脏瓣膜的尝试。这些尝试使用了同种异体/自体细胞和生物支架的组合,存在实际、监管和伦理问题。原位再生取决于能够吸引、容纳和指导细胞并促进结缔组织形成的支架。我们描述了一种手术、组织工程、解剖精确、新颖的现成的、无细胞的、合成的支架,它可以诱导涉及相关细胞类型、细胞外基质、包括神经和体液成分在内的调节因子的快速形态发生过程。这个过程依赖于特定的材料特性、设计和“形态动力学”。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f64/10560219/613b2a3f9823/42003_2023_5383_Fig1_HTML.jpg

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