Live cell imaging of membrane/cytoskeleton interactions and membrane topology.

Live cell imaging of membrane/cytoskeleton interactions and membrane topology.
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DOI:
10.1038/srep06056
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发表时间:
2014-09-10
期刊:
影响因子:
4.6
通讯作者:
Battaglia G
Battaglia G
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Chierico L;Joseph AS;Lewis AL;Battaglia G

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We elucidate the interaction between actin and specific membrane components, using real time live cell imaging, by delivering probes that enable access to components, that cannot be accessed genetically. We initially investigated the close interplay between Phosphatidylinositol 4,5-bisphosphate (PIP2) and the F-actin network. We show that, during the early stage of cell adhesion, PIP2 forms domains within the filopodia membrane. We studied these domains alongside cell spreading and observed that these very closely follow the actin tread-milling. We show that this mechanism is associated with an active transport of PIP2 rich organelles from the cell perinuclear area to the edge, along actin fibers. Finally, mapping other phospholipids and membrane components we observed that the PIP2 domains formation is correlated with sphingosine and cholesterol rafts.
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