Altered Expression of the Mismatch Repair Genes in DF-1 Cells Infected with the Avian Leukosis Virus Subgroup A

Overview

Journal Springerplus

Date 2016 Nov 1

PMID 27795899

Authors

Da-Wei Yao

Li Zhan

Yu-Fang Hong

Jian-Xin Liu

Jia-Rong Xu

De-Ji Yang

Affiliations

Soon will be listed here.

Abstract

The absence or deficiency of DNA mismatch repair (MMR) activity results in microsatellite instability (MSI) in cancer. The avian leukosis virus (ALV) causes neoplastic disease in chickens. In this study, the status of MMR, MSI, the cell cycle and apoptosis were detected in DF-1 cells after avian leukosis virus subgroup A infection. Flow cytometry analysis results indicated that there was no significant difference in cell apoptosis between the control and infected groups. The percentage of cells in S and G2 phases were increased in the infected group. MSI and mutation of MSH2 and MLH1 gene exons were absent in DF-1 cells after infection. Levels of MSH2 and MLH1 mRNA were dramatically increased in DF-1 cells after infection. These results demonstrated that ALV RAV-1 infection may promote the expression of MSH2 and MLH1 genes rather than resulting in gene mutations. Mismatch repair functions were normal and may be have relationships with the arrest of S phase and G2 phase.

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