Table 1. Antibodies used in this study.

Antigen	Source	Antibody type	Application	Dilution
Integrin α6	Abcam 124924	R monoclonal	WB	1:2000
Integrin β1	Abcam 134179	R monoclonal	WB	1:500
p63α	Santa Cruz 8344	R polyclonal	WB	1:1000
CD44	Cell Signaling 5640	M monoclonal	WB	1:1000
β-catenin	Cell Signaling 2698	M monoclonal	WB	1:1000
β-catenin	Cell Signaling 2677	M monoclonal	IF	1:300
GAPDH	Cell Signaling 2118	R monoclonal	WB	1:1000
Non-phospho-(active) β-catenin (S33, S37, T42)	Cell Signaling 8814	R monoclonal	WB	1:1000
p-β-catenin (S45)	Cell Signaling 9564	R polyclonal	WB	1:1000
p-GSK-3β (S9)	Cell Signaling 9322	R monoclonal	WB	1:1000
GSK-3β	Cell Signaling 9315	R monoclonal	WB; IP	1:1000; 1:50
GSK-3β	Cell Signaling 9832	M monoclonal	WB; IP	1:1000; 1:50
PR55α	Cell Signaling 2290	R monoclonal	WB; IP	1:1000; 1:25
PR55α	Cell Signaling 5689	M monoclonal	WB	1:1000
PP2A C subunit	Cell Signaling 2038	R polyclonal	WB	1:1000
PP2A C subunit	Abcam 66597	M monoclonal	IP	1:75
p-mTOR (S2448)	Cell Signaling 5536	R monoclonal	WB	1:1000
p-p70 S6K (T389)	Cell Signaling 9205	R polyclonal	WB	1:1000
p-Rictor (T1135)	Cell Signaling 3806	R monoclonal	WB	1:1000
p-Akt (S473)	Cell Signaling 4060	R monoclonal	WB	1:2000
p-Akt (T308)	Cell Signaling 4056	R monoclonal	WB	1:1000
Akt	Cell Signaling 4691	R monoclonal	WB	1:1000
p-PDK1 (S241)	Cell Signaling 3438	R monoclonal	WB	1:1000
Lamins A+ C	Cell Signaling 4777	M monoclonal	WB	1:2000
p-GSK-3α (S21)	Cell Signaling 9316	R monoclonal	WB	1:1000
GSK-3α	Cell Signaling 4337	R monoclonal	WB	1:1000
p-β-catenin (S675)	Cell Signaling 4176	R monoclonal	WB	1:1000
p-LRP6 (S1490)	Cell Signaling 2568	R ployclonal	WB	1:1000
LRP6	Cell Signaling 3395	R monoclonal	WB	1:1000
E-cadherin	Abcam 40772	R monoclonal	IF	1:100

R: rabbit; M: mouse