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3 protocols using ephb3

1

Histological Analysis of Mouse Intestinal Tissues

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Small intestine and colon from sacrificed mice were placed immediately into 10% neutral buffered formalin (NBF). Intestines were opened longitudinally, cleaned, and swiss-rolled. Swiss rolls were fixed for ~24 hr in 10% NBF at room temperature (RT). Fixed tissues were embedded in paraffin and stained with H&E. Adenomas were graded by inspection of H&E-stained sections.
For immunohistochemistry (IHC), primary antibodies (Abs) recognized were β-catenin (Cell Signaling Technology, #2677), c-Myc (Santa Cruz, #SC764, N-262), lysozyme (#A0099), ephrinB1 (R&D Systems, clone AF473), EphB2 (R&D Systems, clone AF467), EphB3 (R&D Systems, clone AF432), cleaved caspase-3 (Cell Signaling Technology, #9661), Ki67 (Dako, Tec3 clone), chromogranin A (Immunostar, #20085), p21 (Santa Cruz Biotechnology, clone M19), GFP (Novus, 100–1678), cyclin D1 (Cell Signaling Technology, #2978), cyclin E1 (Abcam, ab7959), cyclin A1 (Santa Cruz Biotechnology, sc-751), and B23 (Sigma, B0556). Anti-LFABP antibody was the kind gift of Dr. Jeffrey Gordon (Washington University, St. Louis).
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2

Immunoblotting of Cellular Proteins

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Standard immunoblotting was performed using Abs recognizing HA (Santa Cruz Biotechnology, clone Y-11), Flag (Sigma clone M2), Myc-tag (Cell Signaling Technology, 9B11), vinculin (Abcam, SPM227), Mule (Bethyl Laboratories, A300-486A), ephrinB1 (R&D Systems, clone AF473), EphB2 (R&D clone AF467), EphB3 (R&D Systems, clone AF432), Miz1 (Santa Cruz Biotechnology, sc-22837), c-Myc (Santa Cruz Biotechnology, N262), α-tubulin (Sigma), and β-actin (Sigma). Anti-mouse and anti-rabbit HRP-conjugated secondary Abs were from Thermo Fisher Scientific. Quantification of immunoblots was performed using Image J software (NIH).
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3

Ephrin-B1 and EphB Receptor Imaging

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Mouse embryos were subjected to immunofluorescence using 2 µg/ml ephrin-B1 (AF473; R&D Systems), 2 µg/ml EphB2 (AF467; R&D Systems), 2 µg/ml EphB3 (AF432; R&D Systems), and 10 µg/ml GFP (ab13970; Abcam) antibodies. The following secondary antibodies were used: Alexa Fluor 488–conjugated donkey anti–chicken IgG (1:1,000, 703-545-155; Jackson ImmunoResearch Laboratories, Inc.) and Cy3-conjugated donkey anti–goat IgG (1:400; 705-165-003; Jackson ImmunoResearch Laboratories, Inc.). To label F-actin, Alexa Fluor 647–conjugated phalloidin (1:40; A22287; Thermo Fisher Scientific) was used. For Western blotting, the following primary antibodies were used: rabbit anti-ROCK1 (1:500; sc-5560; Santa Cruz Biotechnology, Inc.), ROCK2 (1:500; sc-5561; Santa Cruz Biotechnology, Inc.), and HSP70 (1:1,000; 610607; BD). The following IRDye secondary antibodies were used: goat anti–mouse 680RD (1:5,000; 925–68070; LI-COR Biosciences) and goat anti–rabbit 800CW (1:5,000; 926–32211; LI-COR Biosciences).
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