Calcium flickers steer cell migration.
Calcium flickers steer cell migration.
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钙闪烁引导细胞迁移
DOI:
10.1038/nature07577
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发表时间:
2009-02-12
期刊:
影响因子:
64.8
通讯作者:
Cheng, Heping
中科院分区:
文献类型:
--
作者:
Wei, Chaoliang;Wang, Xianhua;Chen, Min;Ouyang, Kunfu;Song, Long-Sheng;Cheng, Heping
Well-organized calcium signal in space, time and concentration is essential to directional movement, which is common to all cell types during development and critical to tissue remodeling and regeneration after damage. However, to date, it remains perplexing how calcium regulates the dynamics of leading lamella, which is the signalling and motility centre of a migrating cell, contains numerous effector proteins that require high levels of calcium for activation. Here we visualise, for the first time, high-calcium microdomains (‘‘calcium flickers’’), which are most active at the leading lamella of migrating fibroblasts, displaying a 4: 1 front-to-rear polarisation opposite to the global calcium gradient (Fig). Calcium flicker activity is dually coupled to membrane tension (via TRPM7, a stretch-activated Ca2+-permeant channel of the transient receptor potential superfamily) and chemoattractant signal transduction (via type 2 inositol 1, 4, 5-trisphosphate receptors). Interestingly, when exposed to a PDGF gradient perpendicular to cell movement, asymmetric calcium flicker activity develops across the lamella and promotes the turning of migrating fibroblasts. These findings illustrate how the exquisite spatiotemporal organisation of calcium microdomains can orchestrate complex cellular processes such as cell migration.
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DOI:
10.1083/jcb.200701134
发表时间:
2007-06-04
期刊:
The Journal of cell biology
影响因子:
--
作者:
van Haastert PJ;Keizer-Gunnink I;Kortholt A
通讯作者:
Kortholt A
DOI:
10.1083/jcb.200110161
发表时间:
2002-02-04
期刊:
The Journal of cell biology
影响因子:
--
作者:
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通讯作者:
Chisholm RL
影响因子:
64.8
作者:
HAHN, K;DEBIASIO, R;TAYLOR, DL
通讯作者:
TAYLOR, DL
影响因子:
56.9
作者:
Robinson, RC;Mejillano, M;Choe, S
通讯作者:
Choe, S
影响因子:
21.3
作者:
Franco, SJ;Rodgers, MA;Huttenlocher, A
通讯作者:
Huttenlocher, A