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Updated: May 28, 2026
05:46
Rapid Screening of HIV Reverse Transcriptase and Integrase Inhibitors
Published on: April 9, 2014
HIV-1 Entry, Inhibitors, and Resistance
Michael A Lobritz1, Annette N Ratcliff1, Eric J Arts1
1Department of Molecular Biology and Microbiology and Division of Infectious Diseases, Department of Medicine, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA.
Viruses
|October 14, 2011
Summary
Entry inhibitors are a new HIV-1 treatment. This review explores potential resistance mechanisms, including tropism switching and increased coreceptor affinity, for these vital antiretroviral agents.
Area of Science:
- Virology
- Immunology
- Pharmacology
Background:
- Entry inhibitors are a novel class of antiretroviral agents for treating Human Immunodeficiency Virus type 1 (HIV-1) infection.
- Mechanisms of drug resistance are well-documented for established HIV drug classes but remain ill-defined for entry inhibitors.
- Despite clinical use, understanding resistance to entry inhibitors is crucial for effective HIV-1 management.
Purpose of the Study:
- To review the development of attachment, fusion, and coreceptor entry inhibitors.
- To explore proposed mechanisms of resistance to this emerging class of antiretroviral agents.
Main Methods:
- Literature review of scientific studies on HIV-1 entry inhibitors.
- Analysis of proposed resistance mechanisms, including tropism switching and altered coreceptor interactions.
Main Results:
- Several potential resistance mechanisms have been identified.
- These include viral tropism switching (e.g., from CCR5 to CXCR4 utilization), increased affinity for coreceptors, enhanced viral entry rates, and utilization of inhibitor-bound receptors.
- The development of attachment, fusion, and coreceptor inhibitors is discussed in the context of these resistance pathways.
Conclusions:
- Resistance to HIV-1 entry inhibitors is an evolving area of research.
- Further investigation into these mechanisms is necessary to optimize treatment strategies and combat viral resistance.
- Understanding resistance pathways is critical for the continued efficacy of antiretroviral therapy for HIV-1.
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