Tumor Biology

, Volume 35, Issue 11, pp 11489–11497 | Cite as

Designing a recombinant chimeric construct contain MUC1 and HER2 extracellular domain for prediagnostic breast cancer

  • Elaheh Gheybi
  • Jafar Amani
  • Ali Hatef Salmanian
  • Farhad Mashayekhi
  • Samaneh Khodi
Research Article


Breast cancer is the most common cancer among women in the world. One of the approaches for diagnosis of breast cancer is detection of its tumor-associated markers. Mucin 1 (MUC1), a tumor-associated antigen, is a transmembrane glycoprotein expressed by normal epithelial cells and overexpressed by carcinomas of epithelial origin. Also, human epidermal growth factor receptor-2 (HER2/erbB-2) belongs to the one of four members of tyrosin kinase type 1 family in which overexpression of HER2 is associated with malignancy in breast cancer. This study was aimed to bioinformatics analysis and designing a recombinant chimeric protein containing MUC1 and HER2 antigens to express in prokaryotic host (Escherichia coli) as breast cancer diagnosis tools. The immunogenic sequences of MUC1 and HER2 were extracted and fused together by a linker. The chimeric construct was analyzed by bioinformatics softwares. The optimization and purification, evaluation of the expression of chimeric protein was performed using Western blotting, ELISA, and immunohistochemistry. The results showed that the chimeric construct was stable and immunogenic domains were exposed. The pET-28a vector containing chimeric gene had high level of protein expression. The recombinant chimeric protein was confirmed using Western blotting, and it was investigated using ELISA and IHC. Then, the MUC1 and HER2 combined peptides can be used as coating antigens in ELISA for detection of antibodies against MUC1 or HER2 in human serum.


Recombinant chimeric antigen MUC1-HER2 Breast cancer 


Conflicts of interest



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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2014

Authors and Affiliations

  • Elaheh Gheybi
    • 1
    • 2
  • Jafar Amani
    • 1
  • Ali Hatef Salmanian
    • 3
  • Farhad Mashayekhi
    • 2
  • Samaneh Khodi
    • 1
  1. 1.Applied Biotechnology Research CenterBaqiyatallah University of Medical SciencesTehranIran
  2. 2.Department of Biology, Science FacultyGuilan UniversityRashtIran
  3. 3.Department of Plant BiotechnologyNational Institute of Genetic Engineering and BiotechnologyTehranIran

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