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4 protocols using rabbit anti p53

1

Quantification of Pancreatic ADM and AFLs

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For quantification of ADM and AFLs, random whole pancreatic sections stained with hematoxylin and eosin H&E were analyzed. For immunohistochemical staining, sections of paraffin embedded pancreata were rehydrated and antigen retrieval was performed using Antigen Unmasking Solution (Vector Laboratories). Overnight incubation with the following primary antibodies was done at 4°C: goat anti-CPA1 (R&D), rabbit anti-CK19 (Abcam), rabbit anti-GFP (Santa Cruz Biotechnology), mouse anti-Ki67 (BD), rabbit anti-P53 (Vector Laboratories), goat anti-Amylase (Santa Cruz Biotechnology), rabbit anti-p44/p42 MAPK (Cell Signaling) and FITC-conjugated DBA-lectin (Vector Laboratories). Biotin-conjugated secondary antibodies were incubated for 1 h at room temperature, following development with ABC and DAB kits (both Vector Laboratories). Nuclear counterstaining was performed using haematoxylin. For immunofluorescence, sections were incubated with fluorophore-conjugated secondary antibody for 1 h at room temperature. Slides were mounted with DAPI hardset antifade mounting medium.
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2

Immunohistochemical Analysis of Mouse Tissue

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Mouse tissues were fixed in 10% (v/v) buffered formalin and embedded in paraffin. Sections of the paraffin-embedded tissues were subjected to immunohistochemical (IHC) analysis as described[8 (link)]. The following primary antibodies were used for IHC analysis: mouse anti–β-catenin (1:800; BD Biosciences, Lexington, KY), rabbit anti-p53 (1:500; Vector Laboratories Inc., Burlingame, CA), goat anti–E-cadherin (1:500; R&D Systems, Minneapolis, MN), Rabbit anti-vimentin (1:500; Epitomics, Burlingame, CA), and mouse anti-CDX2 (1:100; BioGenex, Fremont, CA). The IHC staining with anti-p53 antibody was classified according to the percentage of stained cells. Expression of p53 was considered to be weak if <10% of neoplastic cells were observed to be stained, and strong if >10% of neoplastic cells were stained.
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3

Podocyte Stress Signaling Pathways

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Aldosterone was obtained from Sigma Aldrich (St. Louis, MO). FR167653, p38α MAP Kinase inhibitor, was kindly provided by Astellas Pharma Inc. (Tokyo, Japan). Primary antibodies used for immunohistochemical studies and Western blotting were goat anti-nephrin (R&D Systems, Minneapolis, MN), rabbit anti-podocin (Sigma Aldrich), rabbit anti-phospho-p38 MAPK (Cell Signaling Technology, Boston, MA), rabbit total p38 MAPK (Cell Signaling Technology), rabbit anti-WT1 (Santa Cruz, Dallas, TX), and rabbit anti-p53 (Vector Laboratories, Burlingame, CA), rabbit anti-phospho-MKP-1 (Cell Signaling Technology), rabbit anti-phospho-MKK3 (Cell Signaling Technology), and mouse anti-glyceraldehyde-3-phosphate dehydrogenase (GAPDH; Santa Cruz) antibodies. pRc/RSV Flag MKK350 (link) and pRc/RSV Flag MKK3 (glu)51 (link) were gifts from Professor Roger Davis (Addgene plasmid #14671 and #14670, respectively).
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4

Immunohistochemical Analysis of Mouse Tissue

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Mouse tissues were fixed in 10% (v/v) buffered formalin and embedded in paraffin. Sections of the paraffin-embedded tissues were subjected to immunohistochemical (IHC) analysis as described[8 (link)]. The following primary antibodies were used for IHC analysis: mouse anti–β-catenin (1:800; BD Biosciences, Lexington, KY), rabbit anti-p53 (1:500; Vector Laboratories Inc., Burlingame, CA), goat anti–E-cadherin (1:500; R&D Systems, Minneapolis, MN), Rabbit anti-vimentin (1:500; Epitomics, Burlingame, CA), and mouse anti-CDX2 (1:100; BioGenex, Fremont, CA). The IHC staining with anti-p53 antibody was classified according to the percentage of stained cells. Expression of p53 was considered to be weak if <10% of neoplastic cells were observed to be stained, and strong if >10% of neoplastic cells were stained.
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