Syndecan 4 heparan sulfate proteoglycan is a selectively enriched and widespread focal adhesion component.

Syndecan 4 heparan sulfate proteoglycan is a selectively enriched and widespread focal adhesion component.
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Syndecan 4 硫酸乙酰肝素蛋白多糖是一种选择性富集且广泛分布的粘着斑成分。

DOI:
10.1091/mbc.5.2.183
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发表时间:
1994
影响因子:
3.3
通讯作者:
Couchman,JR
Couchman,JR
中科院分区:
生物学3区
文献类型:
--
作者:
Woods,A;Couchman,JR

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成纤维细胞中的粘着斑形成是由细胞外基质分子启动的复杂的跨膜信号传导过程引起的。虽然已经确定了整合素与伴随的酪氨酸激酶的作用,但有证据表明细胞表面硫酸乙酰肝素蛋白聚糖(HSPG)也与蛋白激酶C的相关作用有关。蛋白聚糖的身份仍然难以捉摸,但我们现在报告,syndecan 4(ryudocan/amphiglycan)是目前在局灶性粘连的一些细胞类型。亲和纯化的抗体对syndecan 4核心蛋白的胞质结构域的一个独特的部分识别的HSPG的相似特性的syndecan 4。这些抗体仅在细胞透化后才对粘着斑染色,并识别不同的哺乳动物物种。多配体蛋白聚糖4与包含β 1或β 3整联蛋白亚基以及在纤连蛋白、层粘连蛋白、玻连蛋白或I型胶原的底物上形成的那些的粘着斑相关。没有发现含有黏着斑蛋白但缺乏syndecan 4的局灶性粘连。与此相反,syndecan 2,其胞质结构域是密切同源的syndecan 4,似乎不是一个粘着斑的组成部分。因此,syndecan 4代表了一种新的跨膜粘着斑成分,可能参与它们的组装。
Focal adhesion formation in fibroblasts results from complex transmembrane signaling processes initiated by extracellular matrix molecules. Although a role for integrins with attendant tyrosine kinases has been established, there is evidence that cell surface heparan sulfate proteoglycans (HSPGs) are also involved with an associated role of protein kinase C. The identity of the proteoglycan has remained elusive, but we now report that syndecan 4 (ryudocan/amphiglycan) is present in focal adhesions of a number of cell types. Affinity-purified antibodies raised against a unique portion of the cytoplasmic domain of syndecan 4 core protein recognized an HSPG of similar characteristics to those of syndecan 4. These antibodies stained focal adhesions only after cell permeabilization and recognized differing mammalian species. Syndecan 4 was associated with focal adhesions that contained either beta 1 or beta 3 integrin subunits and those that formed on substrates of fibronectin, laminin, vitronectin, or type I collagen. No focal adhesions were found that were vinculin-containing but lacked syndecan 4. In contrast, syndecan 2, whose cytoplasmic domain is closely homologous to syndecan 4, does not appear to be a focal adhesion component. Thus, syndecan 4 represents a new transmembrane focal adhesion component, probably involved in their assembly.
DOI: --
发表时间: 1989
影响因子: 4
作者:
Karl R. Fath;C.-J. S. Edgell;Keith Burridge
通讯作者: Karl R. Fath;C.-J. S. Edgell;Keith Burridge
人乳腺上皮细胞和肺成纤维细胞表面硫酸乙酰肝素蛋白聚糖的差异表达。
DOI: 10.1016/s0021-9258(18)48404-9
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
V. Lories;J. Cassiman;H. V. D. Berghe;Guido David
通讯作者: Guido David
粘着斑和细胞-基质相互作用。
DOI: 10.1016/s0174-173x(88)80027-x
发表时间: 1988
期刊: Collagen and related research
影响因子: --
作者:
Woods,A;Couchman,JR
通讯作者: Couchman,JR
DOI: --
发表时间: 1985
期刊: The Journal of biological chemistry
影响因子: --
作者:
Woods,A;Couchman,JR;Höök,M
通讯作者: Höök,M
DOI: 10.1083/jcb.118.4.961
发表时间: 1992-08
期刊: The Journal of cell biology
影响因子: --
作者:
David G;van der Schueren B;Marynen P;Cassiman JJ;van den Berghe H
通讯作者: van den Berghe H