Large-scale survey of porcine endogenous retrovirus in Chinese miniature pigs |
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Authors: | Wu Jianmin Ma Yuyuan Lv Maomin Yang Yubiao Guo Yanru Yu Xiuling Tian Kegong Zhang Jingang |
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Institution: | Department of Blood Biopharmaceuticals and Biotechnology, Beijing Institute of Transfusion Medicine, Beijing 100850, China. |
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Abstract: | We conducted a large-scale survey on the existence and expression status of porcine endogenous retrovirus (PERV) in seven breeds of Chinese miniature pigs. Genotyping of PERV was examined by PCR using type-specific primers according to the env genotyping method. The presence and expression status of viral gag, pol and env genes were further analyzed in Wuzhishan pigs (WZSP) and Bama minipigs (BMP). The results showed that PERV existed in all 348 genomic DNA samples. The genotype distribution was subtype A-74.43%, subtype B-95.40% and subtype C-30.46%. No expression of subtype C was found in WZSP and BMP. This research obtained an adequate level of information on the molecular epidemiology of PERV in China. The results indicated that it is possible to monitor pig herds for individuals with the lowest PERV prevalence, especially lacking PERV-C. |
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