SEQUENCE ANALYSIS FOR THE COMPLETE PROVIRAL GENOME OF AVIAN LEUKOSIS VIRUS SUBGROUP J ASSOCIATED WITH HAEMANGIOMAS, LEIOMYOSARCOMAS AND MYELOMAS IN LAYER FLOCKS

文献类型： 外文期刊

第一作者： Qu Yue

作者： Qu Yue;Sun Honglei;Li Delong;Liu Sidang;Qu Yue;Sun Meiyu;Qin Liting;Gao Yulong;Wang Xiaomei;Qu Yue;Sun Honglei

作者机构：

关键词： Avian leukosis subgroup J (ALV-J);myeloma;haemangioma;leiomyosarcoma;sequence analysis

期刊名称：ACTA VETERINARIA HUNGARICA （ 影响因子：0.955； 五年影响因子：1.164 ）

ISSN： 0236-6290

年卷期： 2012 年 60 卷 3 期

页码：

收录情况： SCI

摘要： Avian leukosis virus subgroup J (ALV-J) can cause a variety of neoplasms, including mainly myeloid leukosis (myelocytomatosis) and nephromas. Other tumours, such as histiocytic sarcoma (HS), haemangiosarcoma and mesothelioma, may also develop. In a previous article we described a case in which myeloid leukosis, haemangiomas and leiomyosarcomas appeared simultaneously in a commercial layer flock with infection by ALV-J. The present research was completed to understand the molecular characteristics of the ALV-J strain that induced clinical myeloid leukosis, haemangiomas and leiomyosarcomas. Two strains of ALV-J (SDAU1001 and SDAU1002) were isolated and identified, and their full-length sequences were analysed. The complete genome nucleotide sequences of these two isolates were different in length, 7652 nt and 7636 nt, respectively. They shared 98.9% identity with each other, and 93.4% to 97.8% nucleotide identity to the reference ALV-J isolates. A 19-nucleotide repeat sequence was identified in the primer binding site (PBS) leader region of isolate SDAU1001. A base substitution mutation (base 15 C-T) in this insertion was identified. However, the identical insertion at the same site was not found in SDAU1002. The gag and pol genes of the two viruses were more conserved than the env gene. One key deletion in the E element was a common feature of SDAU1001 and SDAU1002. SDAU1001 and SDAU1002, possibly recombinants of ALV-J and another avian retrovirus, may share the same ancestor. Co-infection by SDAU1001 and SDAU1002 isolates is a possible explanation why myeloid leukosis, haemangiomas, and leiomyosarcomas appeared simultaneously in the same commercial layer flock.

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