Generation of a monoclonal antibody to a cryptic site common to both integrin beta1 as well as gelatinase MMP9.

Generation of a monoclonal antibody to a cryptic site common to both integrin beta1 as well as gelatinase MMP9.
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针对整合素 beta1 和明胶酶 MMP9 共有的隐秘位点生成单克隆抗体。

DOI:
10.1089/153685903322538809
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发表时间:
2003
期刊:
Hybridoma and hybridomics
影响因子:
--
通讯作者:
Broek,Daniel
Broek,Daniel
中科院分区:
--
文献类型:
--
作者:
Hassanieh,Loubna;Rodriguez,Dorothy;Xu,Jinsong;Brooks,PeterC;Broek,Daniel

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整合素是一类细胞表面受体,参与多种细胞过程的调节,包括细胞粘附、迁移和侵袭以及基因表达、分化和信号转导。细胞侵袭不仅需要整合素的粘附特性,还需要基质降解酶的蛋白水解特性,例如金属蛋白酶(MMP)。先前的研究表明,整合素αvβ3是MMP2的受体,将其蛋白酶活性定位于细胞表面,最终导致位点特异性的细胞外基质(ECM)降解。在这里,我们开发试剂来研究 MMP9 和整合素 α5β1 之间相互作用的可能性。通过使用 EV22 病毒研究,四肽序列 LRSG 被证明是介导 β1 整合素与 EV22 结合的二聚化序列。同一项研究还表明,使用含有 LRSG 的肽可以阻止细胞感染。 在后来的一项研究中,为了分离 MMP 家族的抑制剂,LRSG 序列被鉴定为能够结合 MMP9 的序列。有趣的是,MMP9 含有 LRSG 序列,这增加了 MMP9 通过二聚化 LRSG 基序通过 β1 整合素结合细胞表面的可能性。我们使用来自 β1 整联蛋白的包含 LRSG 的序列作为抗原,在小鼠模型中生成单克隆抗体 (MAB) FM155。 MAB FM155 将帮助识别隐秘表位 LRSG 及其在基质重塑以及肿瘤生长、癌细胞迁移和血管生成中的作用。
Integrins are one class of cell surface receptors that have been implicated in the regulation of a diverse set of cellular processes, including cell adhesion, migration, and invasion as well as gene expression, differentiation, and signal transduction. Cellular invasion not only requires the adhesive properties of integrins but also the proteolytic properties of matrix-degrading enzymes, such as the metalloproteinases (MMPs). Previous studies have shown that integrinαvβ3 is a receptor for MMP2, localizing its proteinase activity to the cell surface, ultimately leading to site-specific extracellular matrix (ECM) degradation. Here we develop reagents to investigate the possibility of an interplay between MMP9 and integrinα5β1. With the use of EV22 viral studies, the tetrapeptide sequence, LRSG, was shown to be a dimerizing sequence mediatingβ1 integrin binding to EV22. The same study also showed that cellular infection could be halted with the use of LRSG-containing peptides. In a later study, in an effort to isolate inhibitors of the MMP family, LRSG sequence was identified as one capable of binding MMP9. Interestingly, MMP9 contains an LRSG sequence, raising the possibility that MMP9 binds the cell surface viaβ1 integrins through the dimerizing LRSG motif. We used the LRSG-containing sequence fromβ1 integrins as an antigen to generate the monoclonal antibody (MAB) FM155 in the mouse model. MAB FM155 will help identify a cryptic epitope, LRSG, and its role in matrix remodeling as well as tumor growth, cancer cell migration, and angiogenesis.
DOI: --
发表时间: 2000-12
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影响因子: 11.2
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DOI: 10.1083/jcb.139.1.265
发表时间: 1997-10-06
期刊: The Journal of cell biology
影响因子: --
作者:
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