Article
HIV-1 Antiretroviral Drug Therapy.
Ugandan CFAR Laboratories, Division of Infectious Diseases, Department of Medicine, Case Western Reserve University, Cleveland, Ohio 44106.
Cold Spring Harbor perspectives in medicine
04/2012;
2(4):a007161.
DOI:10.1101/cshperspect.a007161
Source: PubMed
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ABSTRACT: Entry of HIV-1 into target cells requires cell-surface CD4 and additional host cell cofactors. A cofactor required for infection with virus adapted for growth in transformed T-cell lines was recently identified and named fusin. However, fusin does not promote entry of macrophage-tropic viruses, which are believed to be the key pathogenic strains in vivo. The principal cofactor for entry mediated by the envelope glycoproteins of primary macrophage-tropic strains of HIV-1 is CC-CKR-5, a receptor for the beta-chemokines RANTES, MIP-1alpha and MIP-1beta.Nature 07/1996; 381(6584):661-6. · 36.28 Impact Factor -
Article: Virus fitness: concept, quantification, and application to HIV population dynamics.
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ABSTRACT: Viral fitness has been broadly studied during the past three decades, mainly to test evolutionary models and population theories difficult to analyze and interpret with more complex organisms. More recent studies, however, are focused in the role of fitness on viral transmission, pathogenesis, and drug resistance. Here, we used human immunodeficiency virus (HIV) as one of the most relevant models to evaluate the importance of viral quasispecies and fitness in HIV evolution, population dynamics, disease progression, and potential clinical implications.Current topics in microbiology and immunology 02/2006; 299:83-140. · 4.93 Impact Factor -
Article: Comparison of raltegravir and elvitegravir on HIV-1 integrase catalytic reactions and on a series of drug-resistant integrase mutants.
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ABSTRACT: HIV-1 integrase (IN) is the molecular target of the newly approved anti-AIDS drug raltegravir (MK-0518, Isentress) while elvitegravir (GS-9137, JTK-303) is in clinical trials. The aims of the present study were (1) to investigate and compare the effects of raltegravir and elvitegravir on the three IN-mediated reactions, 3'-processing (3'-P), strand transfer (ST), and disintegration, (2) to determine the biochemical activities of seven IN mutants (T66I, L74M, E92Q, F121Y, Q148K, S153Y, and N155H) previously selected from drug-resistant patients and isolates, and (3) to determine the resistance profile for raltegravir and elvitegravir in those IN mutants. Our findings demonstrate that both raltegravir and elvitegravir are potent IN inhibitors and are highly selective for the ST reaction of IN. Elvitegravir was more potent than raltegravir, but neither drug could block disintegration. All resistance mutations were at least partially impaired for ST. Q148K was also markedly impaired for 3'-P. Both drugs exhibited a parallel resistance profile, although resistance was generally greater for elvitegravir. Q148K and T66I conferred the highest resistance to both drugs while S153Y conferred relatively greater resistance to elvitegravir than raltegravir. Drug resistance could not be overcome by preincubating the drugs with IN, consistent with the binding of raltegravir and elvitegravir at the IN-DNA interface. Finally, we found an inverse correlation between resistance and catalytic activity of the IN mutants.Biochemistry 10/2008; 47(36):9345-54. · 3.42 Impact Factor
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Keywords
antiretroviral drug therapy
antiviral drugs
basic principles
causative agent
distinct classes
drug action
Drug Administration
drug discovery efforts
drug resistance
drugs
FDA)-approved drugs
HIV-1 infection
HIV-1 infections
HIV-1 replication
medical management
molecular mechanism
resistance profiles
significant advance
specific pharmacological agents
virus replication cycle