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Article

Correlation of telomere length shortening with TP53 somatic mutations, polymorphisms and allelic loss in breast tumors and esophageal cancer

  • Authors:
    • Xiao-Dan Hao
    • Yue Yang
    • Xin Song
    • Xue-Ke Zhao
    • Li-Dong Wang
    • Jun-Dong He
    • Qing-Peng Kong
    • Nelson Leung Sang Tang
    • Ya-Ping Zhang
  • View Affiliations / Copyright

    Affiliations: State Key Laboratory of Genetic Resources and Evolution, and Yunnan Laboratory of Molecular Biology of Domestic Animals, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, P.R. China, Department of the Breast, First People's Hospital of Kunming, Kunming, P.R. China, Henan Key Laboratory for Esophageal Cancer Research, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P.R. China, Laboratory of Genetics of Disease Susceptibility, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, SAR, P.R. China
  • Pages: 226-236
    |
    Published online on: October 22, 2012
       https://doi.org/10.3892/or.2012.2098
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Abstract

Genomic instability caused by telomere erosion is an important mechanism of tumorigenesis. p53 plays a key role in cellular senescence and/or apoptosis associated with telomere erosion which positions p53 as a guard against tumorigenesis. The present study was undertaken to investigate the potential interactions between p53 functional mutations, polymorphisms, allelic loss and telomere erosion in 126 breast tumor patients and 68 esophageal cancer patients. Telomere length (TL) was measured by real-time quantitative PCR. Somatic mutations, polymorphisms and allelic loss in the TP53 gene were detected by direct sequencing of both tumor and normal tissue samples. Our results showed that telomeres were significantly shorter in tumors with somatic p53 mutations compared with tumors with wild-type p53 in both breast tumors (P=0.007) and esophageal cancer (P=0.001). Telomeres of patients with minor genotype CC of rs12951053 and GG of rs1042522 were significantly shorter compared to patients with other genotypes of this single nucleotide polymorphism in esophageal cancer tissue. Furthermore, TP53 allelic loss was detected and significantly associated with somatic mutations in both types of tumor tissues. These findings suggest that somatic p53 mutations, rs12951053 genotype CC and rs1042522 genotype GG contribute to erosion of telomeres, and TP53 allelic loss may be one of the representations of chromosomal instability caused by telomere erosion combined with somatic p53 mutations. These results support that the TP53 gene has a strong interaction with TL erosion in tumorigenesis.
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Copy and paste a formatted citation
Spandidos Publications style
Hao X, Yang Y, Song X, Zhao X, Wang L, He J, Kong Q, Tang NL and Zhang Y: Correlation of telomere length shortening with TP53 somatic mutations, polymorphisms and allelic loss in breast tumors and esophageal cancer. Oncol Rep 29: 226-236, 2013.
APA
Hao, X., Yang, Y., Song, X., Zhao, X., Wang, L., He, J. ... Zhang, Y. (2013). Correlation of telomere length shortening with TP53 somatic mutations, polymorphisms and allelic loss in breast tumors and esophageal cancer. Oncology Reports, 29, 226-236. https://doi.org/10.3892/or.2012.2098
MLA
Hao, X., Yang, Y., Song, X., Zhao, X., Wang, L., He, J., Kong, Q., Tang, N. L., Zhang, Y."Correlation of telomere length shortening with TP53 somatic mutations, polymorphisms and allelic loss in breast tumors and esophageal cancer". Oncology Reports 29.1 (2013): 226-236.
Chicago
Hao, X., Yang, Y., Song, X., Zhao, X., Wang, L., He, J., Kong, Q., Tang, N. L., Zhang, Y."Correlation of telomere length shortening with TP53 somatic mutations, polymorphisms and allelic loss in breast tumors and esophageal cancer". Oncology Reports 29, no. 1 (2013): 226-236. https://doi.org/10.3892/or.2012.2098
Copy and paste a formatted citation
x
Spandidos Publications style
Hao X, Yang Y, Song X, Zhao X, Wang L, He J, Kong Q, Tang NL and Zhang Y: Correlation of telomere length shortening with TP53 somatic mutations, polymorphisms and allelic loss in breast tumors and esophageal cancer. Oncol Rep 29: 226-236, 2013.
APA
Hao, X., Yang, Y., Song, X., Zhao, X., Wang, L., He, J. ... Zhang, Y. (2013). Correlation of telomere length shortening with TP53 somatic mutations, polymorphisms and allelic loss in breast tumors and esophageal cancer. Oncology Reports, 29, 226-236. https://doi.org/10.3892/or.2012.2098
MLA
Hao, X., Yang, Y., Song, X., Zhao, X., Wang, L., He, J., Kong, Q., Tang, N. L., Zhang, Y."Correlation of telomere length shortening with TP53 somatic mutations, polymorphisms and allelic loss in breast tumors and esophageal cancer". Oncology Reports 29.1 (2013): 226-236.
Chicago
Hao, X., Yang, Y., Song, X., Zhao, X., Wang, L., He, J., Kong, Q., Tang, N. L., Zhang, Y."Correlation of telomere length shortening with TP53 somatic mutations, polymorphisms and allelic loss in breast tumors and esophageal cancer". Oncology Reports 29, no. 1 (2013): 226-236. https://doi.org/10.3892/or.2012.2098
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