Autonomous right-screw rotation of growth cone filopodia drives neurite turning.
Autonomous right-screw rotation of growth cone filopodia drives neurite turning.
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DOI:
10.1083/jcb.200906043
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发表时间:
2010-02-08
期刊:
影响因子:
--
通讯作者:
Kamiguchi H
中科院分区:
文献类型:
--
作者:
Tamada A;Kawase S;Murakami F;Kamiguchi H
The clockwise turning of neurites is caused by the rotations of filopodia as they extend and sweep across the substratum. The direction of neurite elongation is controlled by various environmental cues. However, it has been reported that even in the absence of any extrinsic directional signals, neurites turn clockwise on two-dimensional substrates. In this study, we have discovered autonomous rotational motility of the growth cone, which provides a cellular basis for inherent neurite turning. We have developed a technique for monitoring three-dimensional motility of growth cone filopodia and demonstrate that an individual filopodium rotates on its own longitudinal axis in the right-screw direction from the viewpoint of the growth cone body. We also show that the filopodial rotation involves myosins Va and Vb and may be driven by their spiral interactions with filamentous actin. Furthermore, we provide evidence that the unidirectional rotation of filopodia causes deflected neurite elongation, most likely via asymmetric positioning of the filopodia onto the substrate. Although the growth cone itself has been regarded as functionally symmetric, our study reveals the asymmetric nature of growth cone motility.
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影响因子:
46.9
作者:
Nagai, T;Ibata, K;Miyawaki, A
通讯作者:
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影响因子:
64.5
作者:
CHENEY, RE;OSHEA, MK;MOOSEKER, MS
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DOI:
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发表时间:
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期刊:
The Journal of cell biology
影响因子:
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作者:
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通讯作者:
Letourneau PC
影响因子:
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作者:
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通讯作者:
TOROIANRAYMOND, A
DOI:
10.1083/jcb.119.5.1219
发表时间:
1992-12
期刊:
The Journal of cell biology
影响因子:
--
作者:
Lewis AK;Bridgman PC
通讯作者:
Bridgman PC