P smad2 s467

The primers used in this study were listed in Supplementary Table S6. The pcDNA3.1-FOXP3, pcDNA3.1, Flag-pcDNA3.1-FOXP3, Flag-pcDNA3.1 were produced in our Lab. CS2-flag-Smad2 (Addgen plasmid #14042) and CS2-flag-Smad3 (Addgen plasmid #14052) was a gift from Joan Massague, pcDNA3-Flag-Smad4 (Addgen plasmid #80888) was a gift from Aristidis Moustakas, Pbv-Luc (Addgen plasmid #16539) and c-Myc promoter del-1 (Addgen plasmid #16601) was a gift from Bert Vogelstein. SiRNA-FOXP3 (sc-43569) and siRNA-Control (sc-43569) were from Santa Cruz Biotechnology. The primary antibodies for western blot were as follows: FOXP3 (150D/E4, Invitrogen, 1:1000), FOXP3Δ3 (16J4G6, Novus,1:1000), PCNA (PC10, Santa Cruz, 1:2000), Bax (B-9, Santa Cruz, 1:1000), Bcl2 (C-2, Santa Cruz, 1:1000), p53 (DO-1, Santa Cruz, 1:1000), Smad2 (A-11, Santa Cruz, 1:1000), Smad3 (38-Q, Santa Cruz, 1:1000), Smad2/3 (A-3, Santa Cruz, 1:1000), p-Smad2(s467, Abcam, 1:1000), p-Smad3(1D9, Santa Cruz, 1:1000), Smad4 (B-8, Santa Cruz, 1:1000), c-Myc (9E10, Santa Cruz, 1:1000), and GAPDH (6C5, Santa Cruz, 1:2000). The primary antibodies for immunohistochemistry were listed below: FOXP3 (150D/E4, Invitrogen, 1:100), FOXP3Δ3 (16J4G6, Novus,1:100), Ki-67 (Ki67, Santa Cruz, 1:50), c-Myc (9E10, Santa Cruz, 1:100), Smad2/3 (A-3, Santa Cruz, 1:100), and p-Smad3 (Santa Cruz, 1:100).

Antibodies against PIM1, p-Smad2 (S467), p-Smad3 (S423 and S425) and p-c-Myc (S62) were purchased from Abcam (Cambridge, MA, USA). Antibodies against E-cadherin, N-cadherin, Vimentin, ZEB1, ZEB2, Snail1, Snail2 (Slug), Twist, MMP2, MMP9, Smad2, Smad3, c-Myc, PCNA, Ki67 and GAPDH were purchased from Proteintech Group (Chicago, USA). Wright-Giemsa was purchased from Solarbio (Beijing, China). The inhibitors 10058-F4 and SGI-1776 were purchased from MedChem Express (New Jersey, USA). TGF-β was purchased from PeproTech (New Jersey, USA). The Alexa Fluor 488- and 594-conjugated secondary antibodies were purchased from Invitrogen (CA, USA).