Abstract:
:Patterns of microRNA expression appear to delineate the process of spontaneous neoplastic development-transformation (SPNDT) occurring in the African green monkey kidney (AGMK) VERO cell line (Teferedegne et al., 2010). Analysis of microarray data identified 6 microRNAs whose high-level of expression peaked when the World Health Organization 10-87 VERO cells became tumorigenic at passage (p) 190. Six miRNAs were identified as potential biomarkers for the expression of the VERO-cell tumorigenic phenotype (Teferedegne et al., 2014). However, the question remained whether these miRNA biomarkers are specific for VERO cells or can be generalizable to other cells originating from African green monkey kidneys. To examine miRNA expression patterns in AGMK cells at lower passage levels and to re-examine the identified miRNAs as biomarkers associated with tumorigenic phenotype of VERO cells in another independently-derived line, we established a new line of African green monkey kidney cells (AGMK1-9T7) by serially passaging kidney cells from another AGM. The AGMK1-9T7 cells became tumorigenic in nude mice at p40. Evaluation of miRNA expression at intervals from p1 to p40 revealed similarities between the evolution of miRNA expression during SPNDT in the AGMK1-9T7 cells and the 10-87 VERO cells. Four of the 6 potential biomarker miRNAs (miR-376a, miR-654-3p, miR-543, miR-134) in our earlier reports were detected by microarray in the AGMK1-9T7 cells; RT-qPCR analysis detected all 6 miRNAs. All 6 of these miRNAs have been associated with human tumors. Detection of the same miRNAs associated with the tumorigenic p40 AGMK1-9T7 cells and tumorigenic 10-87 VERO cells confirmed our proposal that these miRNA represent biomarkers for the tumor-forming ability of AGMK/VERO cells. The similarities of expression of miRNAs in different AGMK cell lines that were established 50years apart suggest that the process of SPNDT in these non-human primate cells in tissue culture is based upon similar genetic and epigenetic mechanisms.
journal_name
Vaccinejournal_title
Vaccineauthors
Teferedegne B,Rotroff DM,Macauley J,Foseh G,Lewis G,Motsinger-Rief A,Lewis AM Jrdoi
10.1016/j.vaccine.2017.04.004subject
Has Abstractpub_date
2017-10-04 00:00:00pages
5503-5509issue
41eissn
0264-410Xissn
1873-2518pii
S0264-410X(17)30464-4journal_volume
35pub_type
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