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5 protocols using anti h3k79me2

1

Histone Modification Analysis Protocol

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EPZ-5676 was provided by Epizyme, and DMSO was purchased from Sigma (cat. no. D2438). Cells were dissociated using TrypLE Express Enzyme (Thermo Fisher Scientific, cat. no. 12604021). Primary antibodies used for histone blots were as follows: anti-H3K79me2 (Abcam; ab3594), anti-Histone H3 (Abcam; ab1791). Fluorophore-conjugated secondary antibody IRDye 680RD Donkey anti-Rabbit IgG (Licor, 92568073) was used for histone blots. Primary antibodies used for Western blots were as follows: anti-DOT1L (Cell Signaling; 77087S), anti-cMyc (Cell Signaling; 5605S), anti-SOX2 (Cell Signaling; 3579S), anti-H3K79me2 (Abcam; ab3594), anti-GAPDH (Cell Signaling; 2118S), and anti–β-actin (Cell Signaling; 4970S). HRP-conjugated anti-rabbit IgG (W4011) and anti-mouse IgG (W4021) were purchased from Promega.
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2

Antibody Validation for Epigenetic Analysis

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Antibodies were purchased from the following companies: anti‐H3K27me1, anti‐H3K27me3, anti‐H3K79me1, anti‐H3K79me2, anti‐histone H3, anti‐hnRNP I, anti‐KDM4A, anti‐KDM5A, anti‐KDM5C, anti‐snRNP70, anti‐tubulin, and anti‐U2AF2 from Abcam (Cambridge, MA, USA); anti‐hnRNP A2/B1 from Acris (San Diego, CA, USA); anti‐SR protein‐specific kinases (SRPK)1 and anti‐SRPK2 from BD Biosciences (San Diego, CA, USA); anti‐AKT, anti‐H3K27me2, anti‐protein phosphatase‐1 (PP1), anti‐phospho‐PP1 at Thr320, anti‐phospho‐AKT at Ser473, and anti‐cleaved‐CASPASE‐3 from Cell Signaling Technology (Billerica, MA, USA); anti‐H3K4me1, anti‐H3K4me2, anti‐H3K4me3, and anti‐H3K36me3 from Millipore; anti‐pro‐CASPASE‐3 and anti‐KDM7A from GeneTex (SanAntonio, TX, USA); anti‐hnRNP C1/C2, anti‐BAX, and anti‐BCL2L1 from Santa Cruz Biotechnology (Santa Cruz, CA, USA); anti‐hnRNP A1 from Sigma; and anti‐SRSF1 and anti‐SRSF3 from Zymed (San Francisco, CA, USA).
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3

Western Blot Analysis of Epigenetic Regulators

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5×104 PBS washed cells were lysed in 50 μL of 1× loading buffer supplemented with 10 mM DTT and denatured for 10 min at 95°C. Samples were loaded (20 μL per lane) onto either 10% Bis-Tris or Tris-Acetate gels (ThermoFisher), proteins were separated by electrophoresis for 2 hr then transferred onto nitrocellulose membrane using semi-dry transfer (ThermoFisher). The membranes were blocked in 5% dry milk for 30 min and incubated overnight with anti-Menin (Bethyl), anti-DOT1L (Cell Signaling), anti-H3K79me2 (Abcam) or anti-GAPDH (Cell Signaling) antibody. The next day membranes were washed in TBST and developed using a secondary rabbit anti-HRP (Cell Signaling) and chemiluminescence kit (Pierce).
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4

Isolation and Analysis of Intestinal Epithelial Cells

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IECs were isolated from murine samples by shaking intestinal tissue in 1 mM EDTA/1 mM DTT and 5% FCS at 37°C for 10 min, resulting in 80–90% EpCAM+ IEC purity. RNA was isolated from cells using TRIzol (ThermoFisher Scientific) reagent then subjected to reverse transcription with AMV reverse transcriptase (Promega). Real-time PCR was performed using SYBR green chemistry (Applied Biosystems). Reactions were run on a real-time PCR system (StepOne Plus Real-Time PCR System; Applied Biosystems) Specific primers are listed in Supplementary Table S2. For Western blotting, IECs were lysed in a modified RIPA buffer (ThermoFisher Scientific) and lysates were subjected to immunoblot analysis. Blots were probed with rabbit anti-H3K79me2, H3K79me3, H3K4me2, H3K4me3, H3K27me3 (Abcam), total H3 (Cell Signaling), and GAPDH (Invitrogen).
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5

Western Blot Analysis of Histone Modifications

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Cells (1 × 106) were lysed in 100 µL of 2× sodium dodecyl sulphate (SDS) sample buffer containing radioimmunoprecipitation assay buffer, phenylmethylsulfonyl fluoride and protease inhibitors; sonicated for 20 seconds; and then boiled at 98°C for 8 minutes. Equal amounts of protein were then separated by SDS‐polyacrylamide gel electrophoresis and electrotransferred to polyvinylidene difluoride membranes (Millipore, Burlington, MA). After blocked with 5% not‐fat milk, the membranes were then incubated with the following primary antibodies at 4°C overnight: anti‐SETD2 (Cat#69836; Abcam, Cambridge, UK; Cat#LS‐C332416; LSBio, Seattle, WA), anti‐H3 (Cat#ab1791; Abcam), anti‐H3K36me3 (Cat#ab9050; Abcam), anti‐H3K27me3 (Cat#ab6002; Abcam), anti‐H3K79me2 (Cat#ab3594; Abcam), anti‐TBP (Cat#66166‐1‐lg; Proteintech, Chicago, IL), anti‐H3K9me3 (Cat#A2360; ABclonal, Boston, MA) and anti‐β‐actin (Cat#3700; Cell Signaling Technology, Danvers, MA).
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