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3 protocols using anti twist1 2

1

Protein Expression Analysis of Tumor Tissues

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Tumors were harvested from the tumor-bearing mice after 4 weeks of treatment and then lysed in T-PER™ Tissue Protein Extraction Reagent (Thermo Fisher Scientific, Waltham, MA, USA) containing 1% protease inhibitor cocktail (Sigma-Aldrich Co., St. Louis, MO, USA). The procedures of Western blot analysis have been reported previously45 (link). The primary antibodies used in this study included anti-N-cadherin (GTX100443), anti-E-cadherin (GTX100443), anti-Twist1/2 (GTX127310), anti-ZEB-1 (GTX105278), anti-vimentin (GTX100619), anti-Slug (GTX128796), anti−γ-H2AX (GTX628789; GeneTex, Inc., Irvine, CA, USA), and anti-GAPDH (MA5-15738; Thermo Fisher Scientific, Waltham, MA, USA).
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2

Histological Analysis of Tumor Samples

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Histological analysis of primary tumors was performed for a randomly selected subset of CTRL and miR-127PD tumors. Immunohistochemistry was performed as described (21 (link)). Anti-Ki-67 (1:500) (Cell Signaling Technologies, Cat# 9027), anti-cleaved Caspase 3 [Asp175] (1:500) (Cell Signaling Technologies, Cat# 9661), anti-human mitochondria [113-1] (1:1000) (Abcam, Cat# ab92824), anti-CyclinD1 (Novus Biologicals, Cat# NB100-79920) (1:100), anti-Vimentin (Gentex, Cat# GTX100619) (1:300), anti-Twist1/2 (Genetex, Cat# GTX127310) (1:200), and anti-N-Cadherin (Epitomics, Cat# 2447-1) (1:100), primary antibodies were used. An internal negative control (no primary antibody) was included with each trial. Images of 4 – 6 randomized fields of view per animal were captured then quantified using H DAB color deconvolution software in Image J Fiji (National Institutes of Health, RRID: SCR_002285). For analysis of tumor cell infiltration into lymph node tissue (n = 14), Image J software was used to quantify the total area of the lymph node compared to the total area comprised of tumor cells.
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3

Western Blot Analysis of EMT Markers

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Western blot analysis was performed as described previously [52 (link),53 (link)]. The following antibodies were used: anti-FOXM1 (GTX100276), anti-BIRC5 (GTX100441), anti-AURKA (GTX13824), anti-CD44 (GTX102111), anti-TWIST1/2 (GTX127310), anti-ZEB1 (GTX105278), anti-CDH1 (GTX02618), anti-CK18 (GTX105624), anti-CK7 (GTX109723), and anti-VIMENTIN (GTX100619), which were obtained from GeneTex, Hsinchu City, Taiwan; anti-GAPDH (MAB374) and anti-SOX2 (AB5603), which were obtained from Merck Millipore (Burlington, MA, USA).
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