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Related Concept Videos

Mechanisms of Retrovirus-induced Cancers01:51

Mechanisms of Retrovirus-induced Cancers

Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
Mechanisms of Retrovirus-induced Cancers01:51

Mechanisms of Retrovirus-induced Cancers

Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
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Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
Retroviruses02:33

Retroviruses

Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...

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Related Experiment Video

Updated: May 14, 2026

MicroRNA-based Regulation of Picornavirus Tropism
09:05

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Published on: February 6, 2017

miR-132 enhances HIV-1 replication.

Karen Chiang1, Hongbing Liu, Andrew P Rice

  • 1Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX 77030, USA.

Virology
|January 30, 2013
PubMed
Summary
This summary is machine-generated.

MicroRNA-132 (miR-132) increases following CD4(+) T cell activation and enhances HIV-1 replication. This study identifies miR-132 as the first microRNA shown to boost viral replication.

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Last Updated: May 14, 2026

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Evaluation of the Efficacy And Toxicity of RNAs Targeting HIV-1 Production for Use in Gene or Drug Therapy
12:03

Evaluation of the Efficacy And Toxicity of RNAs Targeting HIV-1 Production for Use in Gene or Drug Therapy

Published on: September 5, 2016

Area of Science:

  • Immunology
  • Virology
  • Molecular Biology

Background:

  • CD4(+) T cell activation influences human immunodeficiency virus type 1 (HIV-1) replication.
  • MicroRNAs (miRNAs) are key regulators of cellular processes, including immune responses and viral infections.

Purpose of the Study:

  • To investigate the role of microRNAs in HIV-1 replication following CD4(+) T cell activation.
  • To identify specific miRNAs that enhance HIV-1 replication.

Main Methods:

  • Quantification of miRNA expression in activated CD4(+) T cells.
  • Functional assays to assess the impact of miR-132 on HIV-1 replication in Jurkat cells.
  • Investigating the role of MeCP2, a target of miR-132, in HIV-1 replication.

Main Results:

  • miR-132 was significantly upregulated upon CD4(+) T cell activation.
  • Overexpression of miR-132 potentiated HIV-1 replication in Jurkat CD4(+) T cells.
  • Knockdown of MeCP2 also led to increased HIV-1 replication, suggesting a mechanistic link.

Conclusions:

  • miR-132 is a novel miRNA that enhances HIV-1 replication.
  • The findings highlight miR-132 as a potential therapeutic target for controlling HIV-1 infection.