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Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
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Rapid Screening of HIV Reverse Transcriptase and Integrase Inhibitors
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[Anti-HIV drugs].

Tomohiko Koibuchi1

  • 1Department of Infectious Diseases and Applied Immunology IMSUT Hospital, The Institute of Medical Science, The University of Tokyo.

Uirusu
|November 5, 2014
PubMed
Summary

Effective anti-HIV drug combinations (ART) suppress viral replication but do not cure HIV due to latent reservoirs. New strategies are needed to eradicate HIV from these hidden infected cells.

Area of Science:

  • Virology
  • Immunology
  • Pharmacology

Context:

  • HIV treatment relies on antiretroviral therapy (ART), a combination of drugs from five classes: NRTIs, NNRTIs, PIs, INSTIs, and CCR5 inhibitors.
  • Recent advancements have yielded potent, low-side-effect anti-HIV medications, supporting early ART initiation regardless of CD4+ T-cell counts.
  • Despite ART's efficacy in suppressing HIV replication, it does not eliminate the virus due to latent reservoirs, necessitating lifelong treatment.

Purpose:

  • To review current anti-HIV drug categories and the principles of antiretroviral therapy (ART).
  • To highlight the limitations of ART in achieving HIV eradication.
  • To emphasize the urgent need for novel strategies targeting latent HIV reservoirs.

Summary:

  • Anti-HIV drugs are classified into five main categories: NRTIs, NNRTIs, PIs, INSTIs, and CCR5 inhibitors.

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  • ART, a combination of these drugs, effectively suppresses HIV replication and is recommended early in treatment.
  • ART cannot eradicate HIV due to latent infection, leading to viral rebound upon treatment interruption and the need for lifelong therapy.

    • Impact:

    • ART has transformed HIV management, enabling prolonged viral suppression and improved patient outcomes.
    • The persistence of latent HIV reservoirs remains a significant barrier to achieving a cure.
    • Developing strategies to eliminate latent HIV is crucial for advancing towards a functional cure or eradication.