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ORIGINAL ARTICLE
Year : 2016  |  Volume : 12  |  Issue : 1  |  Page : 188-192

A rapid and sensitive method for EphB4 identification as a diagnostic and therapeutic biomarker in invasive breast cancer


1 Applied Physiology Research Center, Isfahan, Iran
2 Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
3 Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
4 Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran

Correspondence Address:
Ali Mohammad Sabzghabaee
Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0973-1482.147254

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Background: In the roadmap to design diagnostic and therapeutic markers for breast cancer, EphB4 is of special interest due to its multiple roles in tumor initiation, progression and invasion. The aim of present study was to characterize a rapid and sensitive ELISA-based method to measure EphB4 level and its phosphorylation status following stimulation with its ligand, ephrinB2, in an invasive breast cancer cell line. Materials and Methods: MDA-MB-231 breast cancer cells were lysed and EphB4 level was measured using ELISA. EphB4 level was measured in sub- and post-confluent states in culture dishes. Receptor phosphorylation was also detected by ELISA assay, using various concentrations of pre-clustered ephrinB2 for 20 minutes. Results: Expression of EphB4 receptor was detected by ELISA in all samples. EphB4 level was significantly higher in post.confluent than sub.confluent cells. Phosphorylated receptor was also detectable with this method when cells were exogenously stimulated. Conclusions: Quantitative data from ELISA manifested a difference between levels of EphB4 in two states of different invasive properties. Moreover, ELISA method may be considered rapid and sensitive enough to detect even low levels of total and phosphorylated EphB4 Cost-effectiveness of this method for the detection of differential expression of EphB4 proteins in clinics is also noticeable.


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