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

ABSTRACT The most significant advance in the medical management of HIV-1 infection has been the treatment of patients with antiviral drugs, which can suppress HIV-1 replication to undetectable levels. The discovery of HIV-1 as the causative agent of AIDS together with an ever-increasing understanding of the virus replication cycle have been instrumental in this effort by providing researchers with the knowledge and tools required to prosecute drug discovery efforts focused on targeted inhibition with specific pharmacological agents. To date, an arsenal of 24 Food and Drug Administration (FDA)-approved drugs are available for treatment of HIV-1 infections. These drugs are distributed into six distinct classes based on their molecular mechanism and resistance profiles: (1) nucleoside-analog reverse transcriptase inhibitors (NNRTIs), (2) non-nucleoside reverse transcriptase inhibitors (NNRTIs), (3) integrase inhibitors, (4) protease inhibitors (PIs), (5) fusion inhibitors, and (6) coreceptor antagonists. In this article, we will review the basic principles of antiretroviral drug therapy, the mode of drug action, and the factors leading to treatment failure (i.e., drug resistance).

0 0
 · 
0 Bookmarks
 · 
44 Views
  • Source
    Article: Identification of a major co-receptor for primary isolates of HIV-1.
    [show abstract] [hide abstract]
    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.
    [show abstract] [hide abstract]
    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.
    [show abstract] [hide abstract]
    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

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