Remodelling of the basement membrane: morphogenesis and maturation.

Remodelling of the basement membrane: morphogenesis and maturation.
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基底膜的重塑:形态发生和成熟。

DOI:
10.1002/9780470720899.ch12
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发表时间:
1984
期刊:
Ciba Foundation symposium
影响因子:
--
通讯作者:
Rapraeger,AC
Rapraeger,AC
中科院分区:
--
文献类型:
--
作者:
Bernfield,M;Banerjee,SD;Koda,JE;Rapraeger,AC

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我们分析了小鼠胚胎颌下上皮和间充质之间的相互作用,从而导致上皮的分支形态发生。这种相互作用改变了基底层和网状层的组成和代谢,基底层和网状层构成了位于这些组织之间的基底膜。间充质通过在基底层上沉积富含 I 型胶原蛋白的基质来重塑基底膜,b!产生中性hq'aluronidase。降解透明质酸和硫酸软骨素。该基底层的组成部分。与小鼠乳腺上皮细胞类比。颌下上皮细胞的细胞表面具有富含硫酸乙酰肝素的蛋白多糖,该蛋白多糖固定在细胞上。这种整合膜蛋白多糖的细胞外结构域与间质胶原蛋白结合。干扰胶原蛋白-蛋白糖相互作用似乎会降低细胞的形态稳定性。与其他进程一起。包括上皮细胞增殖。这种重塑导致分支上皮形态发生。基底膜重塑可能是发育过程中调节细胞行为的一般过程,也是形态发生组织相互作用的机制之一。重塑还可能导致基底膜从胚胎中高周转的动态状态成熟到在成体生物体中的持久性和稳定性。
We have analysed the reciprocal interactions between mouse embryo submandibular epithelium and mesenchyme which result in branching morphogenesis of the epithelium. The interactions modify the composition and metabolism of the basal and reticular laminae which comprise the basement membrane lying between these tissues. The mesenchyme remodels the basement membrane by depositing a type I collagen-rich matrix on the basal lamina and b! producing a neutral hq'aluronidase. which degrades hyaluronate and chondroitin sulphate. components of this basal lamina. By analogy with mouse mammary epithelial cells. the submandibular epithelial cells have a heparan sulphate-rich proteoglycan on their cell surfaces which is anchored to the cells. The extracellular domain of this integral membrane proteoglycan binds to interstitial collagen. Interfering with the collagen-proteoglycaii interaction appears to reduce the morphological stability of the cells. Together with other processes. including epithelial cell proliferation. this remodelling leads to branching epithelial morphogenesis. Basement membrane remodelling may be a general process for regulating cell behaviour during development and is one of the mechanisms of morphogenetic tissue interaction. Remodelling may also cause maturation of basement membranes from a dynamic state of high turnover in the embryo to their persistence and stability in the adult organism.
唾液上皮形态和分支形态发生对上皮表面酸性粘多糖蛋白(蛋白聚糖)的依赖性
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