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4 protocols using anti hdac4

1

ChIP Assays for Histone Modifications

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ChIP assays were performed essentially as described previously [26 (link)–28 (link)]. Chromatin was cross-linked with 1% formaldehyde. Aliquots of lysates containing 200 μg of protein were used for each immunoprecipitation reaction with anti-HDAC4 (Abcam), anti-acetyl histone H3, and anti-acetyl histone H4 (Millipore), or pre-immune IgG. Precipitated genomic DNA was amplified by real-time PCR with the primers spanning the rat miR-206 proximal promoter region: Forward, TGCCAGTGTCCGTTCCTCTC, and Reverse, CTTAGAGCTTGCCAAGGAGCTTC.
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2

Quantitative Protein Analysis in Liver

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Liver tissues were homogenized using the MagNA Lyser instrument (Roche) and re-suspended in RIPA buffer as previously described [25 (link)]. The proteins were quantified with the BCA reagent (Pierce) according to the manufacturer's protocol, and separated by 10% polyacrylamide gel electrophoresis. Western blot analyses were performed with anti-MRTF-A (Santa Cruz), anti-HDAC4 (Abcam), anti-collagen type I (Rockland), anti-α-SMA, and anti-β-actin (Sigma).
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3

Western Blot for PCNA and HDAC4

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Total cell lysate was prepared in RIPA lysis buffer (Cell Signaling Technology, USA) and concentrations of proteins were measured using the Pierce BCA Protein Assay kit (Thermo Scientific, Belgium) according to the manufacturer’s instructions. Then, the protein was applied to SDS-PAGE and PVDF membrane (Millipore, USA), then blocked with 5% milk in TBST buffer (Thermo Scientific, USA). Next, we incubated the primary antibodies: anti-PCNA (1: 1000, Abcam UK) and anti-HDAC4 (1: 1000, Abcam UK) or anti-GAPDH (1: 2000, Abcam UK) overnight at 4°C. Then, secondary antibodies (1: 5,000, Abcam UK) were subsequently add to the membranes. Finally, chemiluminescent detection was performed using the ECL system (Millipore, MA, USA).
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4

Oligonucleotide and Antibody Preparation

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Oligonucleotides - Synthetic oligonucleotides (Retrogen Inc., Carlsbad, CA; Integrated DNA Tech. Inc., San Diego, CA) were used in these experiments. Double-stranded oligonucleotides were generated by annealing synthetic oligonucleotides with respective complementary sequence. Antibodies - Rabbit polyclonal anti-HP1β (D-15): sc-10217, anti-HDAC4, anti-HDAC5, anti-Dnmt1, anti-Dnmt3a, anti-Dnmt3b, anti-dimethyl-histone H3 (Lys9), anti-thyroid hormone receptor (alpha 1+2) (ab1131) and monoclonal anti-thyroid hormone receptor (alpha 1 and beta 1) (ab2743), anti-H2A.Z and anti-SRC1 antibodies were purchased from Abcam Inc. (Cambridge, MA) and anti-CBP was from Santa Cruz Biotechnology (Santa Cruz, CA). Anti-acetyl-histone H3, anti-acetyl-histone H4, anti-acetyl-histone H4 (Lys5), anti-acetyl-histone H4 (Lys8), anti-acetyl-histone H4 (Lys16), anti-acetyl-histone H4 (Lys12) and anti-MeCP2 were purchased from Upstate Biotechnology (Lake Placid, NY). Anti-polymerase II antibody was from Active Motif (Carlsbad, CA). Horseradish peroxidase linked anti-rabbit and anti-mouse IgGs were from Amersham Biosciences (Piscataway, NJ).
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