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2017 ; 28
(14
): 1847-1852
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Binding of ZO-1 to ?5?1 integrins regulates the mechanical properties of
?5?1-fibronectin links
#MMPMID28251923
González-Tarragó V
; Elosegui-Artola A
; Bazellières E
; Oria R
; Pérez-González C
; Roca-Cusachs P
Mol Biol Cell
2017[Jul]; 28
(14
): 1847-1852
PMID28251923
show ga
Fundamental processes in cell adhesion, motility, and rigidity adaptation are
regulated by integrin-mediated adhesion to the extracellular matrix (ECM). The
link between the ECM component fibronectin (fn) and integrin ?5?1 forms a complex
with ZO-1 in cells at the edge of migrating monolayers, regulating cell
migration. However, how this complex affects the ?5?1-fn link is unknown. Here we
show that the ?5?1/ZO-1 complex decreases the resistance to force of ?5?1-fn
adhesions located at the edge of migrating cell monolayers while also increasing
?5?1 recruitment. Consistently with a molecular clutch model of adhesion, this
effect of ZO-1 leads to a decrease in the density and intensity of adhesions in
cells at the edge of migrating monolayers. Taken together, our results unveil a
new mode of integrin regulation through modification of the mechanical properties
of integrin-ECM links, which may be harnessed by cells to control adhesion and
migration.