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3 protocols using alexa fluor 594 donkey anti mouse igg h l

1

Histological and Immunofluorescence Analysis of Skin Samples

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Skin samples were fixed in 4% paraformaldehyde overnight at 4 °C, serially dehydrated and embedded in
paraffin. The specimens were sectioned and stained with hematoxylin and eosin (H&E). Immunofluorescence staining was performed
with routine antigen retrieval as suggested by the antibody manufacturer [41 (link)]. The slides were examined under a confocal microscope (Meta 510, Carl Zeiss). The primary antibodies for
immunostaining used in this study were as follows: fibrinogen beta-chain fragment (Abcam, EPR3083; 1:200), sulfated glycoprotein 1
(Abcam, ab68466; 1:200), galectin-1 (Abcam, ab138513; 1:200), lumican (Abcam, ab168348; 1:200), annexin A2 (Genetex, GTX101902,
1:200), gelsolin (Genetex, GTX101185; 1:200), apolipoprotein-A1 (Novus, NBP1-77008; 1:200) and fibronectin (Genetex, GTX61207;
1:200). Secondary antibodies were Alexa Fluor 594 donkey anti–mouse IgG (H+L) (Jackson ImmunoResearch,
715-585-151; 1:500), Cy3-conjugated AffiniPure donkey anti–rabbit IgG (Jackson ImmunoResearch, 711-165-152; 1:500) and
Alexa Fluor 594-AffiniPure F (ab′)2 Fragment rabbit anti–chicken IgY (IgG) (H+L) (Jackson ImmunoResearch,
303-586-003; 1:500). β-galactosidase activity and alkaline phosphatase activity were detected as described [43 (link),44 (link)].
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2

Modulating SOX17 and β-Catenin Signaling

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The following antibodies were used: c-Myc (9E10) (sc-40, Santa Cruz Biotechnology, Santa Cruz, CA); SOX17 (AF1974, R&D systems, Minneapolis, MN); pan-cytokeratin (sc-81714, Santa Cruz Biotechnology, Santa Cruz, CA); β-catenin (zymed 13-8400, Thermo Fisher, Waltham, MA) vinculin (v4139, Sigma-Aldrich, St. Louis, MO); HRP-anti-mouse IgG (NA934V, GE Healthcare); Alexa Fluor-488 goat anti-mouse IgG (H+L) (A11029, Invitrogen, Carlsbad, CA), Alexa Fluor-488 donkey anti-goat IgG (H+L) (705-546-147, Jackson ImmunoResearch Laboratories, West Grove, PA); Alexa Fluor-594 donkey anti-mouse IgG (H+L) (715-586-150, Jackson ImmunoResearch Laboratories, West Grove, PA).
The coding sequencing of WT SOX17 was PCR-amplified from human tumor cDNA synthesized using superscript III reverse transcriptase (Thermo Fisher, Waltham, MA), and cloned into the pCDH-CMV-MCS-EF1-GreenPuro plasmid (SystemsBiosciences Palo Alto, CA). Mutations were introduced using the QuikChange II XL Site-Directed Mutagenesis Kit (Agilent Technologies, Santa Clara, CA). A mutant β-catenin (S33A, S37A, T41A, S45A) expression construct, SOX17 compressed motif reporter [16 (link)] and pBAR TCF/β-catenin activated reporter [35 (link)] were obtained from addgene.
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3

TGF-β1 and Omentin-1 Effects on Cell Markers

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Eight hundred starved cells were seeded into each well of a 96-wells plate, and treated for 24 h with recombinant human TGF-β1 and recombinant human omentin-1 at the concentration mentioned above. After incubation, cells were rinsed 3 times with phosphate-buffered saline (PBS), fixed with 4% paraformaldehyde for 20 min, permeated with 0.5% Triton-X100 for 15 min, blocked with normal goat serum for 60 min, and incubated overnight at 4 °C with primary antibodies against the following proteins: α-SMA (1:200, dilution), vimentin (1:200, dilution), and VE-Cad (1:100, dilution). This was followed by incubation for 40 min at 37 °C with corresponding secondary antibodies: Alexa Fluor 488 goat-anti-rabbit IgG H&L (1:500 dilution, ab150077, Abcam) and Alexa Fluor 594 donkey-anti-mouse IgG (H + L) (1:500 dilution, 715–585-150, Jackson Laboratories). Thereafter, cells were stained for 5 min with 4′,6-diamidino-2-phenylindole (DAPI, 1:1000 dilution, 564,907, BD Pharmingen), and images were then acquired using the PerkinElmer Operetta CLS system. The fluorescence intensity was analyzed using Harmony 3.5 software.
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