Dimeric integrin alpha5beta1 ligands confer morphological and differentiation responses to murine embryonic stem cells.

Dimeric integrin alpha5beta1 ligands confer morphological and differentiation responses to murine embryonic stem cells.
复制标题

二聚体整合素 α5β1 配体赋予小鼠胚胎干细胞形态和分化反应。

DOI:
10.1016/j.bbrc.2009.10.035
复制
发表时间:
2009
影响因子:
3.1
通讯作者:
Singh MD
Singh MD
中科院分区:
生物学4区
文献类型:
--
作者:
Singh MD

文献摘要

参考文献

被引文献

相似文献

我们首次利用并展示了整合素α5β1特异性自组装多价配体在小鼠胚胎干细胞粘附中的功能相关性。利用二聚体、三聚体和四聚体9 - 10型III型纤维连接蛋白结构域(FIII9’10)生成集束整合素α5β1配体表面用于mES细胞培养。与明胶、FIII9’10(单体)、FIII9’10三聚体和-四聚体相比,FIII9’10二聚体支持的mES细胞菌落数量最多。在表面吸附中没有发现结构域展开的证据。随着白血病抑制因子(LIF)浓度的增加,菌落呈分散的扩散性细胞形态,除非被抑制到紧密的形态。在LIF存在的情况下,附着在FIII9 ' 10-二聚体上的mES细胞显示出Oct-4、中胚层转录因子Brachyury和外胚层标记物Nestin的短暂上调。然而,通过碱性磷酸酶染色证实,双上调Nanog使mES细胞处于多能状态。因此,mES细胞粘附二聚体整合素α5β1配体的行为在很大程度上是一种形态学现象,向中胚层和外胚层谱系传递促分化信号。这项工作将对旨在通过整合素配体呈递和合成底物来控制ES细胞行为的细胞和组织工程团队感兴趣。
We present the first report utilizing, and showing the functional relevance of, self-assembling polyvalent ligands specific for integrin α5β1 in murine embryonic stem (mES) cell adhesion. Di, tri and tetrameric 9th–10th type III fibronectin domains (FIII9′10) were used to generate clustered integrin α5β1 ligand surfaces for mES cell culture. Compared to gelatin, FIII9′10 (monomer), FIII9′10-trimer and -tetramer, the FIII9′10-dimer supported the highest number of mES cell colonies. No evidence of domain unfolding upon surface adsorption was found. Colonies appeared disperse with a spread cell morphology unless subdued back to a tight morphology with increasing concentrations of leukemia inhibitory factor (LIF). In the presence of LIF, mES cells adherent to the FIII9′10-dimer showed transient upregulation of Oct-4, the mesodermal transcription factor, Brachyury, and the ectodermal marker, Nestin. However, dual upregulation of Nanog maintained the mES cells in a pluripotent state, confirmed by alkaline phosphatase staining. Therefore, the behavior of mES cells adherent to dimeric integrin α5β1 ligands is a largely morphological phenomenon conferring pro-differentiation signals towards mesodermal and ectodermal lineages. This work will be of interest to cell and tissue engineering groups aiming to control ES cell behavior through integrin ligand presentation and synthetic substrates.
DOI: 10.1038/ncpcardio0442
发表时间: 2006-03
期刊: Nature Clinical Practice Cardiovascular Medicine
影响因子: --
作者:
A. Suzuki;Á. Raya;Y. Kawakami;Masanobu Morita;Takaaki Matsui;K. Nakashima;F. Gage;Concepción Rodríguez-Esteban;J. Belmonte
通讯作者: A. Suzuki;Á. Raya;Y. Kawakami;Masanobu Morita;Takaaki Matsui;K. Nakashima;F. Gage;Concepción Rodríguez-Esteban;J. Belmonte
DOI: 10.1126/science.8248779
发表时间: 1993-11-26
期刊: SCIENCE
影响因子: 56.9
作者:
HARBURY, PB;ZHANG, T;ALBER, T
通讯作者: ALBER, T
DOI: --
发表时间: 1982
期刊: The Journal of biological chemistry
影响因子: --
作者:
Williams,EC;Janmey,PA;Ferry,JD;Mosher,DF
通讯作者: Mosher,DF
多价整合素α5β1配体的寡聚化和热稳定性。
DOI: 10.1016/j.bpc.2009.03.001
发表时间: 2009
影响因子: 3.8
作者:
Kreiner M
通讯作者: Kreiner M
DOI: 10.1107/s0021889806005073
发表时间: 2006-04-01
影响因子: 6.1
作者:
Nelson, A
通讯作者: Nelson, A