ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (4): 754-760.doi: 10.11843/j.issn.0366-6964.2018.04.012

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The Research of 5'LTR Promoter Activity of Avian Leukosis Virus Subgroup K

ZHAO Zi-jun, RAO Ming-zhang, CHEN Jian, ZHANG Jie, YUAN Li-xia, LIAO Ming, CAO Wei-sheng*   

  1. Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture, Key Labora tory of Zoonoses Control and Prevention of Guangdong, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
  • Received:2017-09-22 Online:2018-04-23 Published:2018-04-23

Abstract:

In this study, we investigated the proliferation of avian leukosis virus subgroup K (ALV-K) and the activity of LTR. An ALV-K strain was used to infect DF-1 cells and the LTR was cloned into pGL3-Basic vector. The replication ability of the virus on ALV susceptible cell DF-1 was evaluated by ALV p27 antigen ELISA, and the promoter activities of the LTR of ALV-K, ALV-E and ALV-J strains were measured using a Dual-Glo Luciferase Assay System. The results showed that promoter activity of ALV-K LTR was significantly lower than those of other exogenous ALV in DF-1, CEF and 293T cells. The relatively poorer replication ability of ALV-K may be related to its weak promoter activity of the LTR.

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