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中国巴马小型猪封闭群内源性反转录病毒存在状况分析 被引量:4

Analysis the existence and expression of porcine endogenous retroviruses in Chinese Ba Ma Miniature pigs
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摘要 检测分析猪内源性反转录病毒(porcine endogenous retrovirus;PERV)在中国巴马小型猪封闭群中的携带情况。根据本实验室已建立的PCR、RT_PCR检测方法,对来自于巴马小型猪外周血淋巴细胞的DNA和RNA样品进行PERV核心蛋白基因(gag)、多聚酶基因(pol)及囊膜基因(env)的存在与表达进行检测;同时根据目前通用的env基因分型方法检测PERVenv_Ae、nv_Be、nv_C的存在与表达情况。所有被检样品不仅存在PERV gag、pol、env特异性DNA,而且都能够转录为RNA;所有样品同时存在PERV A、B亚型的前病毒,且有70%个体还同时存在PERV_C亚型前病毒,但仅有90%样品检测到PERV_A亚型的表达,50%检测到PERV_B亚型的表达,而所有的样品均未检测到PERV_C型的表达。巴马小型猪封闭群外周血淋巴细胞基因组中存在PERV_A、B、C 3种亚型,但仅有A、B两种亚型能够表达。PERV_A、B、C 3种亚型的同时存在,预示着巴马小型猪封闭群中存在不同亚型病毒重组的可能性。 We detected the genomic DNA and total RNA samples derived from the peripheral blood lymphocytes (PBL) of Ba Ma miniature pigs for the existence and expression of PERV respectively. The results showed that the PERV subtype env-A, B existed and expressed in all 20 DNA and RNA samples, but only seventy percent DNA samples existed the PERV type env-C provirus, and there is no expression of PERV type env-C in all 20 total RNA samples. In Ba Ma miniature pigs' genome, three subtype env-A, B, C were existence but only env-A, B can expression. It's predicted that there is a possibility of recombination in different PERV subtypes in Ba Ma miniature pigs.
出处 《中国预防兽医学报》 CAS CSCD 北大核心 2005年第5期391-393,共3页 Chinese Journal of Preventive Veterinary Medicine
基金 国家自然科学基金项目(30270989) 中国博士后基金(2003033195)资助项目:广西壮族自治区自科学基金桂科基:0448041
关键词 巴马小型猪 猪内源性反转录病毒 病毒亚型 分析 Ba Ma miniaturepig porcine endogenous retrovirus subtype analysis
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