PMID- 10996639 OWN - NLM STAT- MEDLINE DCOM- 20001030 LR - 20190831 IS - 0166-0934 (Print) IS - 0166-0934 (Linking) VI - 89 IP - 1-2 DP - 2000 Sep TI - Distinct variation pattern in the env of macrophage-tropic simian immunodeficiency virus in vivo demonstrated by denaturing gradient gel electrophoresis. PG - 49-60 AB - Genetic variations, occurring during the infection in the AIDS animal model using a molecular clone virus, often consist of single nucleotide substitutions distributed sparsely in the viral genome. A highly sensitive method was developed to detect such mutations, consisting of denaturing gradient gel electrophoresis (DGGE) and direct sequencing. The genetic variation in the env of a macrophage tropic simian immunodeficiency virus (SIV) in a macaque infected chronically was examined by this technique and compared with that of a T cell tropic SIV in an animal infected chronically. A whole env sequence was amplified by 11 sets of PCR for DNA ranging from 300 to 420 bp. The amplified DNA was subjected to mutational screening by DGGE and to subsequent direct sequencing. Imaging analysis of separated DNA bands by DGGE provided information on the proportion of each variant DNA. The validity of this technique was confirmed by sequencing of variant DNAs cloned by limiting dilutions. Thus, this technique is suitable for analysis of genetic variations in the AIDS animal model using a molecular clone virus. FAU - Dhar, S K AU - Dhar SK AD - Tsukuba Primate Center for Medical Sciences, National Institute for Infectious Diseases, 1 Hachimandai, 305-0843, Tsukuba, Japan. FAU - Tadakuma, K AU - Tadakuma K FAU - Mori, K AU - Mori K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Virol Methods JT - Journal of virological methods JID - 8005839 RN - 0 (DNA, Viral) RN - 0 (Gene Products, env) SB - IM MH - Animals MH - Chronic Disease MH - DNA Mutational Analysis/methods MH - DNA, Viral/*analysis MH - Electrophoresis, Polyacrylamide Gel/methods MH - Female MH - Gene Products, env/*genetics MH - Macaca MH - Macrophages/*virology MH - Male MH - Polymerase Chain Reaction MH - Polymorphism, Single Nucleotide MH - Simian Acquired Immunodeficiency Syndrome/*virology MH - Simian Immunodeficiency Virus/*genetics MH - T-Lymphocytes/*virology MH - Tropism EDAT- 2000/09/21 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/09/21 11:00 PHST- 2000/09/21 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/09/21 11:00 [entrez] AID - S0166093400002019 [pii] AID - 10.1016/s0166-0934(00)00201-9 [doi] PST - ppublish SO - J Virol Methods. 2000 Sep;89(1-2):49-60. doi: 10.1016/s0166-0934(00)00201-9.