Molecular mechanisms controlling a front-rear axis in motile cells
Molecular mechanisms controlling a front-rear axis in motile cells
批准号:
22790279
负责人:
WATANABE Takashi
金额:
$2.5万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Young Scientists (B)
财政年份:
2010
资助国家:
日本
项目状态:
已结题
起止时间:
2010 至 2011
中文摘要
本研究的主要目的是揭示运动细胞前后极性的分子机制。迁移细胞沿方向轴沿着获得前后极性,信号分子、粘附和细胞骨架不对称分布。在迁移细胞的前端,它们保持着小GT_1受体Rac的较高活性,并持续形成向基质的粘附位点。在前面激活的Rac然后控制微管动力学。这项研究表明,Tiam 1在粘附部位积累,并负责在运动的前部激活Rac。此外,本研究还显示了以区域特异性方式控制Rac下游微管动力学的分子机制。
英文摘要
Major aims in this research are to reveal the molecular mechanisms governing a front-rear polarity in motile cells. Migrating cells acquire front-rear polarity along the directional axis, with signaling molecules, adhesions and the cytoskeleton distributed asymmetrically. At the front of migrating cells, they maintain the higher activity of small GTPase Rac and persistently form adhesion sites toward substratum. Activated Rac at the front then controls microtubule dynamics. This research demonstrates that Tiam1 accumulates at adhesion sites and is responsible for Rac activation at the front of motile. Furthermore, this research also shows the molecular mechanisms controlling microtubule dynamics downstream of Rac in a region-specific manner.
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Phosphorylation of+TIPs during cell migration
细胞迁移过程中 TIP 的磷酸化
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
[Watanabe T., et al.]
通讯作者:
et al.
Role of a tyrosine phosphorylation of SMG-9 in binding of SMG-9 to IQGAP and the NMD complex
SMG-9 酪氨酸磷酸化在 SMG-9 与 IQGAP 和 NMD 复合物结合中的作用
DOI:
10.1016/j.bbrc.2011.05.099
发表时间:
2011
期刊:
Biochemical and Biophysical Research Communications
影响因子:
3.1
作者:
[Takeda S., et al]
通讯作者:
et al
DOI:
10.1083/jcb.201101108
发表时间:
2011-06-13
期刊:
The Journal of cell biology
影响因子:
--
作者:
[Li W, Miki T, Watanabe T, Kakeno M, Sugiyama I, Kaibuchi K, Goshima G]
通讯作者:
Goshima G
Tiam1 acts with the PAR complex to control talin-mediated Rac1 activation during polarized cell migration
Tiam1 与 PAR 复合物共同作用,在极化细胞迁移过程中控制 talin 介导的 Rac1 激活
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
[Watanabe T., et al]
通讯作者:
et al
DOI:
10.1038/ncb2060
发表时间:
2010-06-01
期刊:
NATURE CELL BIOLOGY
影响因子:
21.3
作者:
[Nakano, Atsushi, Kato, Hisakazu, Takashima, Seiji]
通讯作者:
Takashima, Seiji
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