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4 protocols using sc 8992

1

Immunohistochemical Analysis of DRG Neurons

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Mice were anesthetized with 80 mg/kg of ketamine and 10 mg/kg of xylazine before transcardial perfusion with 30 ml 0.1 M PBS (pH 7.4) followed by 100 ml of 4% PFA in PBS. DRGs were embedded in optimal cutting temperature compound (OCT; Tissue-Tek, VWR International) and frozen at -80°C; 10- to 20-μm sections were cut using a cryostat and thaw-mounted on SuperFrost Plus slides (Fisher Scientific), then stored at -20°C until use. After drying at RT, slides were rinsed with 0.1 M PBS and overlaid with blocking solution for 1 h. Sections were subsequently washed and incubated overnight with the primary antibody and appropriate secondary antibodies. We used the following primary and secondary antibodies: GR: 1:200, #PA1-511A, Thermo Fisher, RRID: AB_2236340 or sc-8992, Santa Cruz Biotechnology, RRID: AB_2155784; SCG10, 1:500, Novus Biotechnologies anti-stathmin-2, NBP1-49467, RRID: AB_10011568; ATF3, 1:500, sc-188, Santa Cruz, RRID: AB_2258513; NFH, 1:1000; Aves Labs, RRID: AB_2313552; 555 or 488-conjugated goat anti-rabbit IgG antibody, 1:500 #A11035, Invitrogen. Hoechst or DAPI was applied in the final rinse to visualize nuclei.
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2

Western Blot Analysis of Protein Markers

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Cells were lysed in RIPA buffer and protein was loaded on a SDS–PAGE gel and subsequently transferred to a nitrocellulose membrane. Membranes were incubated with the primary antibody overnight at 4 °C and with the secondary antibody for 1 h at room temperature. The following antibodies were used: anti-GR (1:500, sc-8992, Santa Cruz Biotechnology, Santa Cruz, CA, USA), anti-GAPDH (1:10 000, Chemicon, Temecula, CA, USA), anti-β-actin (1:5000, Sigma), anti-Bcl-xL (1:1000, sc-23958, Santa Cruz Biotechnology), and anti-Bcl-2 (1:1000, sc-7382, Santa Cruz Biotechnology).
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3

ChIP Analysis of GR Regulation in BMDMs

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ChIP analysis of wild-type and GRdim BMDMs was performed 4 h after stimulation with LPS (100 ng ml−1) and Dex (10−6 M). ChIP assays were performed as described elsewhere70 (link). The anti-GR antibody (sc-8992) was obtained from Santa Cruz Biotechnology. The following primers were used: SphK1 forward 5′- GCTGCTGATGTGAAGGATAC -3′ and SphK1 reverse 5′- GCTGCTGATGTGAAGGATAC -3′. Foxl2 was selected as a negative control and the following primers were used: forward 5′- GCTGGCAGAATAGCATCCG -3′ and reverse 5′- TGATGAAGCACTCGTTGAGGC -5′. The fold enrichment over immunoglobulin G was calculated. Putative GC-response element-binding sites were identified by Genomatix software.
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4

Protein Expression Analysis by Western Blot

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Proteins concentration was measured using Lowry method (Lowry et al. 1951 ) and 60 µg of proteins were subjected to electrophoresis on 7.5% SDS-PAGE. After transfer to PVDF membrane (Immobilon-FL membrane, Millipore), using a Transblot system (Bio-Rad Laboratories), the unbound sites were blocked (1 h with 2% non-fat dry milk) and the membranes were probed with specific primary rabbit polyclonal antibodies for anti-phospho-p38 Tyr 182 (1:750) (sc-7975-R, Santa Cruz Biotechnology), anti-p38 MAPK (1:500) (sc-535, Santa Cruz Biotechnology), anti-GR (1:500) (sc-8992, Santa Cruz Biotechnology), anti-11BHSD1 (1:1000) (ab393364, Abcam), anti-H6PDH (1:1000) (sc-67394, Santa Cruz Biotechnology), anti-SREBP1c (1:500) (sc-366, Santa Cruz Biotechnology) and mouse monoclonal anti-PPARG (1:1000) (sc-7273, Santa Cruz Biotechnology). Monoclonal mouse anti-B-actin antibody (1:10,000) (AC-15, Sigma-Aldrich) was used as a loading control. Blots were developed with secondary ECL anti-rabbit IgG HRP-linked whole antibody (1:10,000) (Amersham Pharmacia Biotech) or with anti-mouse IgG HRP-linked whole antibody (1:20,000) (ab97046, Abcam). Signal was developed using enhanced chemiluminescence Downloaded from Bioscientifica.com at 09/07/2024 04:13:17AM via free access (ECL) and densitometry of protein bands on X-ray films (Kodak, Rochester, USA) was performed by Image J software (NIH).
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