TY - JOUR A1 - Siegert, Sandra A1 - Thaler, Sonja A1 - Wagner, Ralf A1 - Schnierle, Barbara T1 - Assessment of HIV-1 entry inhibitors by MLV/HIV-1 pseudotyped vectors T2 - AIDS Research and Therapy N2 - Background: Murine leukemia virus (MLV) vector particles can be pseudotyped with a truncated variant of the human immunodeficiency virus type 1 (HIV-1) envelope protein (Env) and selectively target gene transfer to human cells expressing both CD4 and an appropriate co-receptor. Vector transduction mimics the HIV-1 entry process and is therefore a safe tool to study HIV-1 entry. Results: Using FLY cells, which express the MLV gag and pol genes, we generated stable producer cell lines that express the HIV-1 envelope gene and a retroviral vector genome encoding the green fluorescent protein (GFP). The BH10 or 89.6 P HIV-1 Env was expressed from a bicistronic vector which allowed the rapid selection of stable cell lines. A codon-usage-optimized synthetic env gene permitted high, Rev-independent Env expression. Vectors generated by these producer cells displayed different sensitivity to entry inhibitors. Conclusion: These data illustrate that MLV/HIV-1 vectors are a valuable screening system for entry inhibitors or neutralizing antisera generated by vaccines. KW - HIV-1 KW - MLV/HIV-1 KW - pseudotyped vectors Y1 - 2005 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2789 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-26194 UR - http://www.aidsrestherapy.com/content/2/1/7 N1 - © 2005 Siegert et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. VL - 2 IS - 7 ER -