犬Serinc5對HIV-1復制能力影響的研究
[Abstract]:Serine integration factor 5 (Serinc5) is a new host restriction factor which can be carried into virus particles. It can resist the infection of human immunodeficiency virus type I (HIV-1). There are two forms of canine Serinc5 with high homology with human Serinc5 (hSerinc5), one is dog Serinc5 (cSerinc5) encoding full-length genome, the other is transcriptional splice (cSerinc5X2). In order to determine whether the two kinds of canine Serinc5 have the ability to inhibit the replication of HIV-1, we extracted the total HIV-1 from the dog kidney cell line MDCK, amplified the cDNAs of two kinds of dog Serinc5 by RT-PCR, cloned them into pcDNA3.1 vector, and constructed the recombinant plasmid encoding two kinds of canine Serinc5. The two recombinant plasmids were cotransfected into 293T cells with HIV-1 wild-type or Nef deletion type plasmids, and the resulting HIV-1 virus particles were harvested. The two kinds of canine Serinc5 were detected by ELISA method to have no effect on the production of HIV-1 virus particles. The virus particles were further infected with TZM-bl cells respectively. The results of fluorescence intensity test showed that cSerinc5X2 had no significant inhibitory effect on HIV-1 infection compared with the control group. The infection of HIV-1 carrying cSerinc5 was about 9 times lower than that of the virus carrying cSerinc5X2 (p0.01), which indicated that the N-terminal of cSerinc5 played a key role in inhibiting the viral infection activity. This study provides experimental evidence for identification of Serinc5 antiviral functional regions.
【作者單位】: 中國農(nóng)科院哈爾濱獸醫(yī)研究所-美國密歇根州立大學天然免疫聯(lián)合實驗室獸醫(yī)生物技術(shù)國家重點實驗室;中國農(nóng)業(yè)科學院蘭州獸醫(yī)研究所;
【基金】:黑龍江省自然科學基金面上項目(H201602) 黑龍江省人力資源和社會保障廳留學回國人員擇優(yōu)資助項目(2015424)
【分類號】:S852.65
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