a, Evolution of active myosin light chain (ppMLC) concentration.
Control = Mock transfected cells; E-cad = cells transfected with E-cadherin
under the dex-inducible promoter; DEX= treatment with dexamethasone.
b, Evolution of total myosin light chain (MLC) concentration.
c, Evolution of the average traction magnitude in single cells.
d-f, Phase contrast images of a dewetting experiment (d), a
cell island treated with blebbistatin (e) and a cell island treated with Y27632
once dewetting has started (t=46 h) (f). (g) Evolution of monolayer
area for dewetting, dewetting inhibition and reversibility assays (green arrow
indicates addition of Y27632). h-j, Immunostaining of E-cadherin
(h), Beta-catenin (i) and merge images (j) at 6h and 12h after induction of
E-cadherin expression (red square indicates the inset). k-m,
Immunostaining of Paxillin (k), Actin (l) and merge images (m) at 6, 12 and 18
hours after induction of E-cadherin expression. Scale bars = 40 μm. Data
are presented as mean ± s.e.m. Single cell tractions: n=24 cells.
Dewetting inhibition: n=9 cell islands. Reversibility assay: n=16 cell
islands.