Collagen Fibrillogenesis in the Mitral Valve: It's a Matter of Compliance.

Collagen Fibrillogenesis in the Mitral Valve: It's a Matter of Compliance.
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二尖瓣的胶原纤维形成:这是一个顺应性问题。

DOI:
10.3390/jcdd8080098
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发表时间:
2021-08-20
影响因子:
2.4
通讯作者:
Potts JD
Potts JD
中科院分区:
医学3区
文献类型:
--
作者:
Goodwin RL;Kheradvar A;Norris RA;Price RL;Potts JD

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胶原纤维是二尖瓣瓣叶、其张力装置(腱索)和相关乳头肌的基本结构成分。在这些结构中的任何一个中,细胞外基质(ECM)中胶原纤维的过量或缺乏可不利地影响二尖瓣功能。胶原纤维的组织提供了一个复杂的框架,允许在这个重要的心脏瓣膜的精确打开和关闭期间进行单向血液流动。尽管许多ECM分子对于二尖瓣的分化、生长和体内平衡是必需的(例如,弹性纤维、糖蛋白和聚糖),胶原纤维是二尖瓣完整性的关键。除了组织的惰性结构成分之外,胶原纤维是驱动由外到内的细胞信号传导的动态结构,其通知组织环境中存在的瓣膜间质细胞(VIC)。胶原蛋白家族成员的多样性和密切相关的胶原蛋白样三重螺旋蛋白中发现的二尖瓣,将讨论除了如何在这些蛋白质的缺陷可能导致瓣膜疾病。
Collagen fibers are essential structural components of mitral valve leaflets, their tension apparatus (chordae tendineae), and the associated papillary muscles. Excess or lack of collagen fibers in the extracellular matrix (ECM) in any of these structures can adversely affect mitral valve function. The organization of collagen fibers provides a sophisticated framework that allows for unidirectional blood flow during the precise opening and closing of this vital heart valve. Although numerous ECM molecules are essential for the differentiation, growth, and homeostasis of the mitral valve (e.g., elastic fibers, glycoproteins, and glycans), collagen fibers are key to mitral valve integrity. Besides the inert structural components of the tissues, collagen fibers are dynamic structures that drive outside-to-inside cell signaling, which informs valvular interstitial cells (VICs) present within the tissue environment. Diversity of collagen family members and the closely related collagen-like triple helix-containing proteins found in the mitral valve, will be discussed in addition to how defects in these proteins may lead to valve disease.
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