Image based modeling of bleb site selection.
Image based modeling of bleb site selection.
复制标题
基于图像的BLEB站点选择的建模。
DOI:
10.1038/s41598-017-06875-9
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发表时间:
2017-07-27
影响因子:
4.6
通讯作者:
Bretschneider T
中科院分区:
文献类型:
--
作者:
Collier S;Paschke P;Kay RR;Bretschneider T
Cells often employ fast, pressure-driven blebs to move through tissues or against mechanical resistance, but how bleb sites are selected and directed to the cell front remains an open question. Previously, we found that chemotaxing Dictyostelium cells preferentially bleb from concave regions, where membrane tension facilitates membrane-cortex detachment. Now, through a novel modeling approach based on actual cell contours, we use cell geometry to predict where blebs will form in migrating cells. We find that cell geometry alone, and by implication, physical forces in the membrane, is sufficient to predict the location of blebs in rounded cells moving in a highly resistive environment. The model is less successful with more polarized cells moving against less resistance, but can be greatly improved by positing a front-to-back gradient in membrane-cortex adhesion. In accord with this prediction, we find that Talin, which links membrane and cortex, forms such a front-to-back gradient. Thus our model provides a means of dissecting out the role of physical forces in controlling where blebs form, and shows that in certain circumstances they could be the major determining factor.
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DOI:
10.1083/jcb.200802081
发表时间:
2008-06-16
期刊:
The Journal of cell biology
影响因子:
--
作者:
Fackler OT;Grosse R
通讯作者:
Grosse R
影响因子:
8.6
作者:
Alert, Ricard;Casademunt, Jaume
通讯作者:
Casademunt, Jaume
影响因子:
4
作者:
Maugis, Benoit;Brugues, Jan;Amblard, Francois
通讯作者:
Amblard, Francois
影响因子:
3.4
作者:
Alert, Ricard;Casademunt, Jaume;Sens, Pierre
通讯作者:
Sens, Pierre
影响因子:
3.4
作者:
Charras, Guillaume T.;Coughlin, Margaret;Mahadevan, L.
通讯作者:
Mahadevan, L.