Microb Pathog 2017 Jan 24;102:29-35. Epub 2016 Nov 24.
College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China; National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, People's Republic of China; Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture, People's Republic of China; Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, People's Republic of China. Electronic address:
We have previously shown that the extracellular signal-regulated kinase/mitogen-activated protein kinase (ERK/MAPK) pathway contributes to subgroup J avian leukosis virus (ALV-J) replication and tumorigenicity. However, a role for ERK/MAPK signaling in ALV-A and ALV-B replication is unknown. In this study we successfully constructed and recovered a recombinant form of ALV-A strain GD13-1 which showed similarities in growth to the parental wild type virus in vitro. ALV subgroups J, A or B all triggered ERK2 activation in primary CEF cells. ERK/MAPK inhibition markedly suppressed ALV-A and ALV-B replication as shown by extremely low levels of viral transcription and virus protein production. This finding provides evidence that ERK/MAPK signaling responses play important roles in ALV replication and may represent novel drug targets for therapeutic intervention strategies.