Journal of Capital Medical University ›› 2014, Vol. 35 ›› Issue (2): 237-242.doi: 10.3969/j.issn.1006-7795.2014.02.019

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Investigation of genes co-regulated by Notch-1 intra-cellular domain and CBF-1 at transcription level in the whole genome of human pancreatic cancer BxPC3 cells

Wang Lange, Zhang Yuxiang   

  1. Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
  • Received:2013-12-18 Online:2014-04-21 Published:2014-04-16
  • Contact: 张玉祥 E-mail:yxzhang@ccmu.edu.cn

Abstract:

Objective Looking for the potential genes co-regulated by Notch-1 intra-cellular domain(NICD) and CBF-1 at transcription level in the whole genome of human pancreatic cancer cell BxPC3 cells; investigating characteristics of those genes such as distribution, functions and classification; suggesting the potential functions and regulatory pattern of Notch signalling pathway based on the data obtained. Methods Chromatin immuno-precipitation(ChIP) coupled with Illumina/Solexa-platform based high-throughput sequencing was employed to illustrate the profile of synergistic transcription between NICD and CBF-1 at genome-wide level in human pancreatic cancer BxPC3 cells. Results 1) The numbers of qualified reads for NICD and CBF-1 samples are 14 287 722 and 14 289 280, 11 782 027 and 11 711 920 of which are uniquely matched with human reference genome, respectively. 2) The numbers of peaks for NICD and CBF-1 samples are 385 and 492; the peak region covers 318 344 bp and 383 768 bp, each of which accounts for 0.01% of whole genome. 3) Regardless of NICD or CBF-1 samples, most peaks scatter at intergenic and intronic region and only less than 5% of them locate in exonic region. 4) 150 out of 385 peaks for NICD samples and 287 out of 492 peaks for CBF-1 samples can be uniquely matched with a human gene, 93 of which are the same between two groups. 5) The details of those genes, such as names, locations and functions, were indicated by gene ontology(GO) analysis and gene database mining. Conclusion More unknown genes co-regulated by NICD and CBF-1 at transcription level were discovered in human pancreatic BxPC3 cells; the distribution, functions and classification of them were demonstrated; the potential functions and regulatory pattern of Notch signalling pathway were implied based on the data obtained.

Key words: Notch signalling pathway, CBF-1, chromatin immuno-precipitation, high-throughput sequencing, peaks, gene ontology analysis

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