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3 protocols using cyclin b1 v152

1

Immunoblotting Procedure for Protein Analysis

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Immunoblotting procedure was as described previously (42 (link)). Primary antibodies include: ELL3 (1:300 dilution) (#H000080237-B02P lot WuLz 08310, and H00080237-B01P lot E1172, 08295 WuLz, Abnova, Taipei City, Taiwan), ELL2 (1:10,000 dilution) (A302-505A; Bethyl Laboratories Inc., Montgomery, TX), ELL (1:800 dilution) (#51044-1-AP, Proteintech Group, Chicago, IL), β-actin (1:12,000 dilution) (AC-15, Sigma Aldrich, St. Louis, MO), PARP (46D11), Phospho-Histone H2A.X (Ser139) (#2577), Cleaved Caspase-3 (Asp175) (#9661), Cyclin B1 (V152), Phospho-Cyclin B1 (Ser133) (9E3), p53 (1C12) and HA-Tag (C29F4), Cell Signaling Technology, Danvers, MA). Horse radish peroxidase conjugated secondary antibodies were purchased from GE Healthcare Life Sciences (Pittsburgh, PA), and IRDye conjugated secondary antibodies (IRDye®800CW, 926-32210 and IRDye®680RD, 926-68071) were purchased from LI-COR Biotechnologies (Lincoln, NE).
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2

Protein Quantification and Analysis

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Puromycin and G418 were purchased from Cayman Chemical Company (Ann Arbor, MI, USA). NEM and doxorubicin was purchased from Sigma-Aldrich Corporation (St. Louis, MO, USA). CHX and Mg132 were obtained from MedChemExpress (Shanghai, China). The following antibodies were used for either western blotting or immunohistochemical analysis: FBXO22 (13606–1-AP, Protein-tech, Wuhan, China), CDK2 (SC-748, Santa Cruz Biotechnology, CA, USA), CDK4 (SC-260, Santa Cruz Biotechnology, CA, USA), cyclinE1 (EP435E, Abcam, Cambridge, MA, USA), and GAPDH (KC-5G4; Kang Chen Bio-tech, Inc., Shanghai, China). The following antibodies were purchased from Cell Signaling Technology, Inc. (Beverly, MA, USA): Akt (C67E7), phospho-Akt (Ser473) (D9E), Erk (137F5), p38 (D13E1), phospho-p38 (3D7), p70s6k (49D7), phospho-p70s6k (1A5), cyclin B1 (V152), cyclin D1 (92G2) and p21(12D1).
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3

Western Blot Analysis of Cell Signaling

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The cells were treated with vehicle or KB2 for 24 h and 48 h. The cells were lysed in whole-cell lysis buffer and western blotting was carried out as previously described (Bleloch et al., 2019 (link)). The primary antibodies used in this study were, rabbit polyclonal antibodies to phospho-histone H2A.X (Ser139) (#2577), cleaved caspase-3 (Asp175) (#9661), PARP (#9542), caspase-9 (#9502), LC3II (#2775), rabbit monoclonal antibody to β-Catenin (D10A8) (#8480), cleaved caspase-7 (Asp198) (D6H1) (#8438), mouse monoclonal antibodies to E-cadherin (4A2) (#14472), vimentin (R28) (#3932), Cyclin B1 (V152) (#4135), Caspase-8 (1C12) (#9746) from Cell Signaling Technology (Massachusetts, USA); mouse monoclonal antibody to p53 (DO-1) (sc-126), rabbit polyclonal antibodies to p21 (C-19) (sc-397), Cyclin A (H-432) (sc-751) from Santa Cruz Biotechnology (Texas, USA); rabbit polyclonal antibody to p38 MAP kinase (M0800) from Sigma Aldrich. After primary antibody incubation, membranes were incubated with goat anti-rabbit or goat anti-mouse HRP-conjugated secondary antibodies (Bio-Rad Laboratories, California, USA). p38 was used as a loading control. Densitometry readings were obtained using ImageJ and protein expression levels are represented as a ratio of protein of interest/p38 normalized to the vehicle control sample.
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