Differentially expressed genes in a flock of Chinese local-breed chickens infected with a subgroup J avian leukosis virus using suppression subtractive hybridization
文献类型: 外文期刊
第一作者: Zhao, Guiping
作者: Zhao, Guiping;Zheng, Maiqing;Chen, Jilan;Wen, Jie;Wu, Chunmei;Li, Wenjuan;Liu, Libo;Zhang, Yuan
作者机构:
关键词: Avian leukosis virus subgroup J;chicken;transferring gene;MHC genes;hemoglobin gene
期刊名称:GENETICS AND MOLECULAR BIOLOGY ( 影响因子:1.771; 五年影响因子:2.584 )
ISSN: 1415-4757
年卷期: 2010 年 33 卷 1 期
页码:
收录情况: SCI
摘要: Avian leukosis virus subgroup J (ALV-J) is a new type of virus that mainly induces myeloid leukosis (ML) in chickens. To further elucidate the pathogenesis of ALV-J infection and tumor development, expression profiles from the bone marrow tissue of 15 infected and 18 non-infected birds from a local-breed poultry-farm under naturally infected conditions, were analyzed by suppression-subtractive hybridization. The birds were diagnosed as ML+ (or ML-) by specific ALV-J detection methods, involving serological tests for antigens and antibodies, and RT-PCR to detect viral RNA. A total of 59 partial gene sequences were revealed by differential screening of 496 forward and 384 reverse subtracted cDNA clones. Of these, 22 identified genes, including 8 up-regulated and 14 down-regulated, were related to immune functions, these genes being, MHC B-G antigen, translationally-controlled tumor protein (TPT1/TPTC), transferrin and ferritin, hemoglobin and Carbonic anhydrase. Four of the down-regulated genes were selected for further analysis, in view of their predicted roles in infection and immunity by real-time qRT-PCR, using RNA collected from the same birds as those used for SSH. The four genes were expressed at significantly lower levels (p < 0.001) in ALV-J infected birds than in non-infected ones.
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