Fig. 4.
Cadherin-based traction forces are rigidity and ligand dependent. (A) Root-mean-square (RMS) traction forces (Pa) exerted by MDCK cells on soft (0.6 kPa) and rigid (34 kPa) gels coated with E-cadh.Fc (homophilic) or N-cad.Fc (heterophilic) ligand. (B) Traction force exerted by MDCK cells seeded on E-cad.Fc-coated, rigid (34 kPa) gels, after treatment with blebbistatin or cytochalasin. (C) RMS traction forces exerted by MDA-MB-435 cells on soft (0.6 kPa) and rigid (34 kPa) gels coated with N-cad.Fc (homophilic) or E-cad.Fc (heterophilic) ligand. (D) Control RMS traction force exerted by MDA-MB-435 cells on N-cad.Fc-coated, rigid (34 kPa) gel, after treatment with blebbistatin or cytochalasin D (Cyto D).