PMID- 19035322 OWN - NLM STAT- MEDLINE DCOM- 20090106 LR - 20161021 IS - 1000-8721 (Print) IS - 1000-8721 (Linking) VI - 24 IP - 5 DP - 2008 Sep TI - [Pseudotyping of murine leukemia virus particles with porcine reproductive and respiratory syndrome virus M protein-mediated E protein]. PG - 345-51 AB - For constructing pcDNA-ORF5, pcDNA-ORF5-ORF6, pcDNA-ORF5/6, the ORF5 and ORF6 of porcine reproductive and respiratory syndrome virus (PRRSV) were amplified by RT-PCR, and transiently transfected into 293T cells by calciumphosphate co-precipitation. After 48 h, 293T cells were collected and surveyed by flow cytometry examination. The result indicated that the expression level of the E protein that mediated by the M protein was higher than that of the E protein expressed independently. Then pcDNA-ORF5, pcDNA-ORF5-ORF6, pcDNA-ORF5/6 were respectivly co-transfected into 293T cells with pHIT60 (include MuLV structural genes,namely gag and pol) and pHIT111 (retroviral genome, containing LacZ as a reporter). The supernatants were harvested 48 h post-transfection,and the analysis of the characteristic of the pseudotyping virions was performed by Western blot and infection test. The result indicated that the E proteins were expressed on the virions, and incorporated into the retroviral virions. Infection test were performed on Marc-145 and PAM, all the cells infected were Lac Z positive. These results indicated the pseudotype virions of MuLV-E and MuLV-E/M were infectious, and higher infectivity was achieved by MuLV-E/M. FAU - Xia, Ping-An AU - Xia PA AD - The College of Animal Husbandy and Veterinary, Henan Agricultural University, Zhengzhou 450002, China. xpa-88@sohu.com FAU - Dang, Zhan-Guo AU - Dang ZG FAU - Zhou, Bin AU - Zhou B FAU - Chen, Pu-Yanz AU - Chen PY FAU - Cui, Bao-An AU - Cui BA FAU - Qiu, Huang AU - Qiu H FAU - Lu, Gao-Feng AU - Lu GF LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Bing Du Xue Bao JT - Bing du xue bao = Chinese journal of virology JID - 8803009 RN - 0 (Viral Envelope Proteins) RN - 0 (Viral Matrix Proteins) SB - IM MH - Flow Cytometry MH - Leukemia Virus, Murine/*genetics MH - Plasmids MH - Porcine respiratory and reproductive syndrome virus/*genetics MH - Viral Envelope Proteins/genetics/*physiology MH - Viral Matrix Proteins/genetics/*physiology MH - Virion/*genetics EDAT- 2008/11/28 09:00 MHDA- 2009/01/07 09:00 CRDT- 2008/11/28 09:00 PHST- 2008/11/28 09:00 [pubmed] PHST- 2009/01/07 09:00 [medline] PHST- 2008/11/28 09:00 [entrez] PST - ppublish SO - Bing Du Xue Bao. 2008 Sep;24(5):345-51.