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human immunodeficiency virus

  • Open Access
    CRNKL1 Is a Highly Selective Regulator of Intron-Retaining HIV-1 and Cellular mRNAs
    Research Article | Host-Microbe Biology
    CRNKL1 Is a Highly Selective Regulator of Intron-Retaining HIV-1 and Cellular mRNAs

    To regulate its complex splicing pattern, HIV-1 uses the adaptor protein Rev to shuttle unspliced or partially spliced mRNA from the nucleus to the cytoplasm. In the absence of Rev, these RNAs are retained in the nucleus, but it is unclear why.

    Han Xiao, Emanuel Wyler, Miha Milek, Bastian Grewe, Philipp Kirchner, Arif Ekici, Ana Beatriz Oliveira Villela Silva, Doris Jungnickl, Florian Full, Marco Thomas, Markus Landthaler, Armin Ensser, Klaus Überla
  • Open Access
    RanDeL-Seq: a High-Throughput Method to Map Viral <em>cis</em>- and <em>trans</em>-Acting Elements
    Research Article | Host-Microbe Biology
    RanDeL-Seq: a High-Throughput Method to Map Viral cis- and trans-Acting Elements

    Recent studies have renewed interest in developing novel antiviral therapeutics and vaccines based on defective interfering particles (DIPs)—a subset of viral deletion mutants that conditionally replicate. Identifying and engineering DIPs require that viral cis- and trans-acting elements be accurately mapped.

    Timothy Notton, Joshua J. Glazier, Victoria R. Saykally, Cassandra E. Thompson, Leor S. Weinberger
  • Open Access
    Mechanistic Analysis of the Broad Antiretroviral Resistance Conferred by HIV-1 Envelope Glycoprotein Mutations
    Research Article | Host-Microbe Biology
    Mechanistic Analysis of the Broad Antiretroviral Resistance Conferred by HIV-1 Envelope Glycoprotein Mutations

    Although combination antiretroviral (ARV) therapy is highly effective in controlling the progression of HIV disease, drug resistance can be a major obstacle. Recent findings suggest that resistance can develop without ARV target gene mutations.

    Yuta Hikichi, Rachel Van Duyne, Phuong Pham, Jennifer L. Groebner, Ann Wiegand, John W. Mellors, Mary F. Kearney, Eric O. Freed
  • Open Access
    Pneumococcal Conjugate Vaccine Protection against Coronavirus-Associated Pneumonia Hospitalization in Children Living with and without HIV
    Research Article | Therapeutics and Prevention
    Pneumococcal Conjugate Vaccine Protection against Coronavirus-Associated Pneumonia Hospitalization in Children Living with and without HIV

    SARS-CoV-2 may cause severe hospitalization, but little is known about the role of secondary bacterial infection in these severe cases, beyond the observation of high levels of reported inflammatory markers, associated with bacterial infection, such as procalcitonin. We did a secondary analysis of a double-blind randomized trial of pneumococcal conjugate vaccine (PCV) to examine its impact on human coronavirus (CoV) infections before...

    Marta C. Nunes, Clare L. Cutland, Keith P. Klugman, Shabir A. Madhi
  • Open Access
    HIV-1 Vpr-Induced Proinflammatory Response and Apoptosis Are Mediated through the Sur1-Trpm4 Channel in Astrocytes
    Research Article | Host-Microbe Biology
    HIV-1 Vpr-Induced Proinflammatory Response and Apoptosis Are Mediated through the Sur1-Trpm4 Channel in Astrocytes

    Effective antiretroviral therapies can now prolong patients’ lives to nearly normal life span. The current challenge faced by many HIV-infected patients is chronic neuroinflammation and neurotoxicity that contributes to HIV-associated neurocognitive disorders (HAND).

    Ge Li, Tapas Makar, Volodymyr Gerzanich, Sudhakar Kalakonda, Svetlana Ivanova, Edna F. R. Pereira, Sanketh Andharvarapu, Jiantao Zhang, J. Marc Simard, Richard Y. Zhao
  • Open Access
    <em>In Vivo</em> Emergence of a Novel Protease Inhibitor Resistance Signature in HIV-1 Matrix
    Research Article | Therapeutics and Prevention
    In Vivo Emergence of a Novel Protease Inhibitor Resistance Signature in HIV-1 Matrix

    Protease inhibitors (PIs) are the second- and last-line therapy for the majority of HIV-infected patients worldwide. Only around 20% of individuals who fail PI regimens develop major resistance mutations in protease. We sought to explore the role of mutations in gag-pro genotypic and phenotypic changes in viruses from six Nigerian patients who failed PI-based regimens without known drug resistance-associated protease...

    Rawlings Datir, Steven Kemp, Kate El Bouzidi, Petra Mlchocova, Richard Goldstein, Judy Breuer, Greg J. Towers, Clare Jolly, Miguel E. Quiñones-Mateu, Patrick S. Dakum, Nicaise Ndembi, Ravindra K. Gupta
  • Open Access
    CPSF6-Dependent Targeting of Speckle-Associated Domains Distinguishes Primate from Nonprimate Lentiviral Integration
    Research Article | Host-Microbe Biology
    CPSF6-Dependent Targeting of Speckle-Associated Domains Distinguishes Primate from Nonprimate Lentiviral Integration

    Integration is the defining step of the retroviral life cycle and underlies the inability to cure HIV/AIDS through the use of intensified antiviral therapy. The reservoir of latent, replication-competent proviruses that forms early during HIV infection reseeds viremia when patients discontinue medication. HIV cure research is accordingly focused on the factors that guide provirus formation and associated chromatin environments that...

    Wen Li, Parmit K. Singh, Gregory A. Sowd, Gregory J. Bedwell, Sooin Jang, Vasudevan Achuthan, Amarachi V. Oleru, Doris Wong, Hind J. Fadel, KyeongEun Lee, Vineet N. KewalRamani, Eric M. Poeschla, Alon Herschhorn, Alan N. Engelman
  • Open Access
    Antiviral Drug Discovery To Address the COVID-19 Pandemic
    Commentary | Therapeutics and Prevention
    Antiviral Drug Discovery To Address the COVID-19 Pandemic

    The magnitude of the morbidity and mortality inflicted upon the global population in less than 1 year has driven the inescapable conclusion that the discovery and development of effective antiviral drugs for COVID-19 are urgent and should be prioritized. The antiviral drug discovery programs that emerged for HIV and hepatitis C virus have enabled technology and expertise to accelerate this process for SARS-CoV-2. The description of...

    Douglas D. Richman
  • Open Access
    CD4<sup>+</sup> T Cell-Mimicking Nanoparticles Broadly Neutralize HIV-1 and Suppress Viral Replication through Autophagy
    Research Article | Therapeutics and Prevention
    CD4+ T Cell-Mimicking Nanoparticles Broadly Neutralize HIV-1 and Suppress Viral Replication through Autophagy

    HIV-1 is a major global health challenge. The development of an effective vaccine and/or a therapeutic cure is a top priority. The creation of vaccines that focus an antibody response toward a particular epitope of a protein has shown promise, but the genetic diversity of HIV-1 hinders this progress. Here we developed an approach using nanoengineered CD4+ T cell membrane-coated nanoparticles (TNP). Not only do TNP effectively...

    Gang Zhang, Grant R. Campbell, Qiangzhe Zhang, Erin Maule, Jonathan Hanna, Weiwei Gao, Liangfang Zhang, Stephen A. Spector
  • Open Access
    HIV Vpr Modulates the Host DNA Damage Response at Two Independent Steps to Damage DNA and Repress Double-Strand DNA Break Repair
    Research Article | Host-Microbe Biology
    HIV Vpr Modulates the Host DNA Damage Response at Two Independent Steps to Damage DNA and Repress Double-Strand DNA Break Repair

    The DNA damage response (DDR) is a signaling cascade that safeguards the genome from genotoxic agents, including human pathogens. However, the DDR has also been utilized by many pathogens, such as human immunodeficiency virus (HIV), to enhance infection. To properly treat HIV-positive individuals, we must understand how the virus usurps our own cellular processes. Here, we have found that an important yet poorly understood gene in HIV,...

    Donna Li, Andrew Lopez, Carina Sandoval, Randilea Nichols Doyle, Oliver I. Fregoso

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