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Cancer/Testis OIP5 and TAF7L Genes are Up-Regulated in Breast Cancer

  • Mobasheri, Maryam Beigom (Cancer Research Center, Cancer Institute, Tehran University of Medical Sciences) ;
  • Shirkoohi, Reza (Department of Medical Genetics, Faculty of Medicine, Tehran University of Medical Sciences) ;
  • Modarressi, Mohammad Hossein (Cancer Research Center, Cancer Institute, Tehran University of Medical Sciences)
  • Published : 2015.06.26

Abstract

Breast cancer still remains as the most frequent cancer with second mortality rate in women worldwide. There are no validated biomarkers for detection of the disease in early stages with effective power in diagnosis and therapeutic approaches. Cancer/testis antigens are recently promising tumor antigens and suitable candidates for targeted therapies and generating cancer vaccines. We conducted the present study to analyze transcript changes of two cancer/testis antigens, OIP5 and TAF7L, in breast tumors and cell lines in comparison with normal breast tissues by quantitative real time RT-PCR for the first time. Significant over-expression of OIP5 was observed in breast tumors and three out of six cell lines including MDA-MB-468, T47D and SKBR3. Not significant expression of TAF7L was evident in breast tumors but significant increase was noted in three out of six cell lines including MDA-MB-231, BT474 and T47D. OIP5 has ssignificant role in chromatin organization and cell cycle control during cell cycle exit and normal chromosome segregation during mitosis and TAF7L is a component of the transcription factor IID, which is involved in transcription initiation of most protein coding genes. TAF7Lis located at X chromosome and belongs to the CT-X gene family of cancer/testis antigens which contains about 50% of CT antigens, including those which have been used in cancer immunotherapy.

Keywords

Breast cancer biomarkers;targeted therapy;cancer/testis genes;OIP5;TAF7L

Acknowledgement

Supported by : Tehran University of Medical Sciences

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