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Article

Using an exon microarray to identify a global profile of gene expression and alternative splicing in K562 cells exposed to sodium valproate

  • Authors:
    • Xiang-Zhong Zhang
    • Ai-Hua Yin
    • Xiao-Yu Zhu
    • Qian Ding
    • Chun-Huai Wang
    • Yun-Xian Chen
  • View Affiliations / Copyright

    Affiliations: Department of Hematology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
  • Pages: 1258-1265
    |
    Published online on: December 21, 2011
       https://doi.org/10.3892/or.2011.1601
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Abstract

To investigate the effect of valproate treatment on the K562 cell line, a model for chronic myelogenous leukaemia, the growth and survival of the K562 cell line were investigated using the Annexin-V/PI dual staining method, and global profiles of gene expression and alternative splicing in K562 cells were assessed using exon microarrays. A significant increase in cell apoptosis was observed in valproate-exposed K562 cells using flow cytometry. A total of 628 transcripts were identified as being significantly differentially expressed. The number of genes demonstrating increased expression levels was greater than the number of genes demonstrating decreased expression levels (445 genes vs. 183 genes, respectively). The significant enrichment analysis of GO terms for the differentially expressed genes revealed that these genes are involved in many important biological processes such as apoptosis. Six of the genes observed to be differentially expressed that might be involved in apoptosis were selected to undergo qRT-PCR validation. In total, 198 candidates of alternative splicing variants were identified. Among them, three alternative splicing events were selected for validation, and CBLC and TBX1 were confirmed to be alternatively spliced by semi-nested PCR. In conclusion, valproate exposure facilitated cell apoptosis, altered mRNA expression and alternative splicing events in the K562 cell line.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang X, Yin A, Zhu X, Ding Q, Wang C and Chen Y: Using an exon microarray to identify a global profile of gene expression and alternative splicing in K562 cells exposed to sodium valproate. Oncol Rep 27: 1258-1265, 2012.
APA
Zhang, X., Yin, A., Zhu, X., Ding, Q., Wang, C., & Chen, Y. (2012). Using an exon microarray to identify a global profile of gene expression and alternative splicing in K562 cells exposed to sodium valproate. Oncology Reports, 27, 1258-1265. https://doi.org/10.3892/or.2011.1601
MLA
Zhang, X., Yin, A., Zhu, X., Ding, Q., Wang, C., Chen, Y."Using an exon microarray to identify a global profile of gene expression and alternative splicing in K562 cells exposed to sodium valproate". Oncology Reports 27.4 (2012): 1258-1265.
Chicago
Zhang, X., Yin, A., Zhu, X., Ding, Q., Wang, C., Chen, Y."Using an exon microarray to identify a global profile of gene expression and alternative splicing in K562 cells exposed to sodium valproate". Oncology Reports 27, no. 4 (2012): 1258-1265. https://doi.org/10.3892/or.2011.1601
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang X, Yin A, Zhu X, Ding Q, Wang C and Chen Y: Using an exon microarray to identify a global profile of gene expression and alternative splicing in K562 cells exposed to sodium valproate. Oncol Rep 27: 1258-1265, 2012.
APA
Zhang, X., Yin, A., Zhu, X., Ding, Q., Wang, C., & Chen, Y. (2012). Using an exon microarray to identify a global profile of gene expression and alternative splicing in K562 cells exposed to sodium valproate. Oncology Reports, 27, 1258-1265. https://doi.org/10.3892/or.2011.1601
MLA
Zhang, X., Yin, A., Zhu, X., Ding, Q., Wang, C., Chen, Y."Using an exon microarray to identify a global profile of gene expression and alternative splicing in K562 cells exposed to sodium valproate". Oncology Reports 27.4 (2012): 1258-1265.
Chicago
Zhang, X., Yin, A., Zhu, X., Ding, Q., Wang, C., Chen, Y."Using an exon microarray to identify a global profile of gene expression and alternative splicing in K562 cells exposed to sodium valproate". Oncology Reports 27, no. 4 (2012): 1258-1265. https://doi.org/10.3892/or.2011.1601
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