Tumor Biology

, Volume 36, Issue 10, pp 8127–8136 | Cite as

Differential expression and alternative splicing of cell cycle genes in imatinib-treated K562 cells

  • Jing Liu
  • Jin Lin
  • Lin-Feng Huang
  • Bo Huang
  • Yan-Mei Xu
  • Jing Li
  • Yan Wang
  • Jing Zhang
  • Wei-Ming Yang
  • Qing-Hua Min
  • Xiao-Zhong Wang
Research Article


Cancer progression often involves the disorder of the cell cycle, and a number of effective chemotherapeutic drugs have been shown to induce cell cycle arrest. The purpose of this study was to comprehensively investigate the effects of imatinib on the expression profile of cell cycle genes in the chronic myeloid leukemia (CML) K562 cell line. In addition, we also investigated alternative splicing of the cell cycle genes affected by imatinib, since an important relationship has been shown to exist between RNA splicing and cell cycle progression. Exon array analysis was performed using total RNA purified from normal and imatinib-treated K562 cells. We identified 185 differentially expressed genes and 277 alternative splicing events between the two cell groups. A detailed analysis by reverse transcription-PCR (RT-PCR) of key genes confirmed the experimental results of the exon array. These results suggested that treatment of K562 cells with imatinib shifts the expression and alternative splicing profiles of several cell cycle-related genes. Importantly, these findings may help improve imatinib treatment strategies in patients with CML and may be useful for imatinib resistance research and CML drug development.


Imatinib K562 Chronic myeloid leukemia Cell cycle Gene expression profile Alternative splicing 



This study was supported by grants from the National Science Foundation of China (No. 81271912) and the Education Department of Jiangxi province, China (No. GJJ13041).

Conflicts of interest


Supplementary material

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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Jing Liu
    • 1
  • Jin Lin
    • 1
  • Lin-Feng Huang
    • 1
  • Bo Huang
    • 1
  • Yan-Mei Xu
    • 1
  • Jing Li
    • 2
  • Yan Wang
    • 1
  • Jing Zhang
    • 1
  • Wei-Ming Yang
    • 1
  • Qing-Hua Min
    • 1
  • Xiao-Zhong Wang
    • 1
  1. 1.Department of Clinical LaboratoryThe Second Affiliated Hospital of Nanchang UniversityNanchangChina
  2. 2.Department of Clinical LaboratoryThe First Affiliated Hospital of Nanchang UniversityNanchangChina

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