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4 protocols using laminin

1

Western Blot Analysis of Wnt11, HIF, and ECM Proteins

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Tissue or cell extracts were immunoblotted with antibodies specific for WNT11 (ab31962, Abcam), Wnt11 (#AF2647; R&D Systems), HIF-1α (NB100–105, NB100–134), HIF-2α (NB100–122), Laminin (Novus Biologicals), ERK, β-actin (Cell Signaling), β-catenin (BD BioScience), Lamin A/C (Santa Cruz Biotechnology), α-tubulin (Sigma-Aldrich), MMP-2 (IM33), MMP-9 (IM37) (EMD Millipore), and HA (Covance, Princeton, NJ). For detection of HIF-1α and HIF-2α, nuclear proteins were isolated using the NE-PER nuclear extraction kit according to manufacture’s protocol (Thermo Scientific). Quantification of WNT11, Tubulin or ERK protein expression were done using ImageJ software (NIH).
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2

Multilineage Marker Expression Profiling

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Calponin, pancytokeratins AE1/AE3, collagen IV (Abcam), collagen 1, collagen 2 (Cedarlane), PPARγ, Sox9, Runx2 (Santa Cruz Biotechnology), osteocalcin (AbD Serotec), FGFR3, laminin (Novus Biologicals), CD31, CD44, CD45, CD73, CD105, Mac1 (BD Biosciences), α-SMA, Ki67 (Dako).
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3

Reagents for Cell Culture Experiments

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Antibodies and reagents were purchased from the following sources: fibronectin (catalog # Ab2413, Abcam, Cambridge, MA, USA), KDEL (catalog # NBP1–97469, Novus Biologicals, Littleton, CO, USA), collagen I (catalog # NB600–408, Novus Biologicals, Littleton, CO, USA), laminin (catalog # NB300–144, Novus Biologicals, Littleton, CO, USA), CHOP (catalog # 13172, Novus Biologicals, Littleton, CO, USA), and GAPDH (catalog # 3683, Cell signaling technology, Danvers, MA, USA), dexamethasone-21-acetate (Spectrum Chemicals, New Brunswick, NJ, USA), minocycline hydrochloride (Enzo Life Sciences, Inc., New York, NY, USA), and PBA (Scandinavian formulas, PA, USA).
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4

Immunoblotting of Tissue Proteins

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Colonic, ileal, and gastric tissues were collected in fresh carbogenated Krebs buffer. The muscularis externae was separated from the mucosa/submucosa layer by microdissection. Tissues were snap frozen and stored in −80°C until use. Samples were homogenized on ice in lysis buffer supplemented with protease inhibitor cocktails (Sigma-Aldrich). After spinning at 12,000 g at 4°C for 15 minutes, the supernatant proteins were collected and resolved by a standard immunoblotting method [30 (link)–32 (link)]. Antibodies used included phosphorylated STAT3 Tyr705 (Cat#9145), STAT3 (Cat#4904), AKT (Cat#4691), phosphorylated AKT (Cat#4060), MLC2 (#8505), phosphorylated MLC2 (#3671), SMAD2/3 (#8685), and phosphorylated SMAD (#9510) from Cell Signaling (Danvers, MA). SM22 (Cat#ab10135) and calponin (Cat#ab46794) antibodies were purchased from Abcam (Cambridge, UK). Fibronectin (Cat#SC-6952), phosphorylated PKCα (Cat#SC-12356-R), and PKCα (Cat#SC-208) were purchased from Santa Cruz Biotechnology (Dallas, TX). Laminin (Cat#NB300–144SS) antibodies were purchased from Novus Biologicals (Centennial, CO). α-SMA (Cat#A5228) antibodies were purchased from Sigma-Aldrich (St. Louis, MO). Collagen I antibodies (Cat#600-401-103) were purchased from Rockland (Pottstown, PA). All blots were repeated at least 3 times.
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