Western blot was performed as previously described [40 (link)]. The antibodies used were listed as below: DOT1L (ab64077, Abcam), CDK2 (2546, CST), Cyclin A2 (4656, CST), PCNA (13110, CST), GAPDH (51332, CST), c-Myc (5605, CST), H3K79me1 (ab2886, Abcam, Cambridge, MA, USA), H3K79me2 (ab3594, Abcam), H3K79me3 (ab2621, Abcam), and H3 (17168-1-AP, Proteintech, Wuhan, China). Gray ratio of each blot was analyzed by using the Image J ver. 1.46 software and protein/GAPDH or protein/H3 ratio was shown.
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