Isolation and functional analysis of syndecans.

Isolation and functional analysis of syndecans.
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联合体的隔离和功能分析。

DOI:
10.1016/bs.mcb.2017.08.019
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发表时间:
2018
影响因子:
--
通讯作者:
Park PW
Park PW
中科院分区:
生物学4区
文献类型:
--
作者:
Park PW

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Syndecans由一个主要的细胞表面硫酸肝素蛋白聚糖(HSPGs)家族组成。Syndecans由硫酸化糖胺聚糖(GAGs)、硫酸肝素(HS)或硫酸肝素和硫酸软骨素(CS)组成,共价附着在核心蛋白上。Syndecans调节许多细胞过程,如粘附、增殖和迁移。Syndecans主要通过其HS链结合和调节分子,但并不结合所有HS/肝素结合分子。此外,切除综合征-1或-4基因的小鼠没有表现出主要的发育异常,但当受到感染或炎症刺激和条件的挑战时,它们确实表现出惊人的病理表型,这表明综合征的某些功能是特异性的,不能被其他综合征或其他hspg补偿。这些观察结果强调了syndecans的生理学重要性,并表明需要研究分离的天然syndecans的活性,以确定其分子和细胞功能,并确定其生物学意义。在这里,我们描述了分离syndecans的方法和几种分析其功能的方法。
Syndecans comprise a major family of cell surface heparan sulfate proteoglycans (HSPGs). Syndecans are composed of sulfated glycosaminoglycans (GAGs), heparan sulfate (HS) or both HS and chondroitin sulfate (CS), attached covalently to core proteins. Syndecans regulate many cellular processes, such as adhesion, proliferation, and migration. Syndecans bind and regulate molecules primarily through their HS chains, but do not bind to all HS/heparin-binding molecules. Furthermore, mice ablated for the syndecan-1 or -4 gene do not show major developmental abnormalities, but they do show striking pathological phenotypes when challenged with infectious or inflammatory stimuli and conditions, suggesting that certain functions of syndecans are specific and cannot be compensated for by other syndecans or other HSPGs. These observations underscore the physiological importance of syndecans and indicate a need to study the activities of isolated native syndecans to define their molecular and cellular functions, and to establish their biological significance. Here we describe methods to isolate syndecans and several assays to analyze their functions.
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