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Contribution of Filopodia to Cell Migration : A Mechanical Link between Protrusion and Contraction
Joint Authors
Knecht, David A.
Xue, Fei
Janzen, Deanna M.
Source
International Journal of Cell Biology
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-07-06
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Numerous F-actin containing structures are involved in regulating protrusion of membrane at the leading edge of motile cells.
We have investigated the structure and dynamics of filopodia as they relate to events at the leading edge and the function of the trailing actin networks.
We have found that although filopodia contain parallel bundles of actin, they contain a surprisingly nonuniform spatial and temporal distribution of actin binding proteins.
Along the length of the actin filaments in a single filopodium, the most distal portion contains primarily T-plastin, while the proximal portion is primarily bound by α-actinin and coronin.
Some filopodia are stationary, but lateral filopodia move with respect to the leading edge.
They appear to form a mechanical link between the actin polymerization network at the front of the cell and the myosin motor activity in the cell body.
The direction of lateral filopodial movement is associated with the direction of cell migration.
When lateral filopodia initiate from and move toward only one side of a cell, the cell will turn opposite to the direction of filopodial flow.
Therefore, this filopodia-myosin II system allows actin polymerization driven protrusion forces and myosin II mediated contractile force to be mechanically coordinated.
American Psychological Association (APA)
Xue, Fei& Janzen, Deanna M.& Knecht, David A.. 2010. Contribution of Filopodia to Cell Migration : A Mechanical Link between Protrusion and Contraction. International Journal of Cell Biology،Vol. 2010, no. 2010, pp.1-13.
https://search.emarefa.net/detail/BIM-477174
Modern Language Association (MLA)
Xue, Fei…[et al.]. Contribution of Filopodia to Cell Migration : A Mechanical Link between Protrusion and Contraction. International Journal of Cell Biology No. 2010 (2010), pp.1-13.
https://search.emarefa.net/detail/BIM-477174
American Medical Association (AMA)
Xue, Fei& Janzen, Deanna M.& Knecht, David A.. Contribution of Filopodia to Cell Migration : A Mechanical Link between Protrusion and Contraction. International Journal of Cell Biology. 2010. Vol. 2010, no. 2010, pp.1-13.
https://search.emarefa.net/detail/BIM-477174
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-477174