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ORIGINAL ARTICLE
Year : 2019  |  Volume : 15  |  Issue : 1  |  Page : 61-67

Analysis of poliovirus receptor, CD155 expression in different human colorectal cancer cell lines: Implications for poliovirus virotherapy


1 Department of Microbiology, Faculty of Biological Sciences, Shahid Beheshti University, Tehran, Iran
2 Department of Microbiology, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
3 Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan, Iran

Correspondence Address:
Prof. Abdolvahab Moradi
Department of Microbiology, School of Medicine, Golestan University of Medical Sciences, Gorgan
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jcrt.JCRT_13_17

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Context: Poliovirus (PV) receptor (CD155) is expressed on several kinds of cells and exerts diverse functions. Various investigations have confirmed that changes in CD155 expression in cancer cell lines affect metastasis, proliferation, and migration. Aims: The purpose of the present study was to investigate the CD155 transcript and protein expression in human colon adenocarcinoma cell lines in comparison to normal fetal human colon (FHC) cells. Materials and Methods: The CD155 expression level in four human adenocarcinoma cell lines and normal colon cell line were assessed using the SYBR green quantitative real-time polymerase chain reaction (PCR) and flowcytometry. Results: The results of real-time PCR indicated that CD155 was significantly overexpressed in all human adenocarcinoma cell lines (P = 0.000). The highest and the lowest expression level of CD155 messenger RNA was observed in SW480 and HT29 cell lines by 491.14, and 12.04 fold changes, respectively, in comparison with the human normal cell line (FHC). Results of flowcytometry indicate that protein was strongly expressed in cancer cell lines. SW480 cells showed the highest CD155 protein expression level of 98.1%, whereas this protein expression was 1.3% in human normal colon cell line (FHC). Totally, these data indicate that CD155 expression is significantly elevated in cancer cell lines. Conclusions: The preferential expression of CD155 on cancer cell lines rather than on normal cell line suggests that CD155 could be targeted for future PV virotherapy.


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