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LNCRNA AND HIV

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https://www.readbyqxmd.com/read/27782208/differential-expression-of-lncrnas-during-the-hiv-replication-cycle-an-underestimated-layer-in-the-hiv-host-interplay
#1
Wim Trypsteen, Pejman Mohammadi, Clarissa Van Hecke, Pieter Mestdagh, Steve Lefever, Yvan Saeys, Pieter De Bleser, Jo Vandesompele, Angela Ciuffi, Linos Vandekerckhove, Ward De Spiegelaere
Studying the effects of HIV infection on the host transcriptome has typically focused on protein-coding genes. However, recent advances in the field of RNA sequencing revealed that long non-coding RNAs (lncRNAs) add an extensive additional layer to the cell's molecular network. Here, we performed transcriptome profiling throughout a primary HIV infection in vitro to investigate lncRNA expression at the different HIV replication cycle processes (reverse transcription, integration and particle production). Subsequently, guilt-by-association, transcription factor and co-expression analysis were performed to infer biological roles for the lncRNAs identified in the HIV-host interplay...
October 26, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27291871/long-noncoding-rna-nron-contributes-to-hiv-1-latency-by-specifically-inducing-tat-protein-degradation
#2
Jun Li, Cancan Chen, Xiancai Ma, Guannan Geng, Bingfeng Liu, Yijun Zhang, Shaoyang Zhang, Fudi Zhong, Chao Liu, Yue Yin, Weiping Cai, Hui Zhang
Long noncoding RNAs (lncRNAs) play multiple key regulatory roles in various cellular pathways. However, their functions in HIV-1 latent infection remain largely unknown. Here we show that a lncRNA named NRON, which is highly expressed in resting CD4(+) T lymphocytes, could be involved in HIV-1 latency by specifically inducing Tat protein degradation. Our results suggest that NRON lncRNA potently suppresses the viral transcription by decreasing the cellular abundance of viral transactivator protein Tat. NRON directly links Tat to the ubiquitin/proteasome components including CUL4B and PSMD11, thus facilitating Tat degradation...
2016: Nature Communications
https://www.readbyqxmd.com/read/27131906/gene-transfer-to-the-outflow-tract
#3
Yalong Dang, Ralitsa Loewen, Hardik A Parikh, Pritha Roy, Nils A Loewen
Elevated intraocular pressure is the primary cause of open angle glaucoma. Outflow resistance exists within the trabecular meshwork but also at the level of Schlemm's canal and further downstream within the outflow system. Viral vectors allow to take advantage of naturally evolved, highly efficient mechanisms of gene transfer, a process that is termed transduction. They can be produced at biosafety level 2 in the lab using protocols that have evolved considerably over the last 15-20 years. Applied by an intracameral bolus, vectors follow conventional as well as uveoscleral outflow pathways...
April 27, 2016: Experimental Eye Research
https://www.readbyqxmd.com/read/25728138/the-lncrna-nron-modulates-hiv-1-replication-in-a-nfat-dependent-manner-and-is-differentially-regulated-by-early-and-late-viral-proteins
#4
Hasan Imam, Aalia Shahr Bano, Paresh Patel, Prasida Holla, Shahid Jameel
A majority of the human genome is transcribed into noncoding RNAs, of which the functions of long noncoding RNAs (lncRNAs) are poorly understood. Many host proteins and RNAs have been characterized for their roles in HIV/AIDS pathogenesis, but there is only one lncRNA, NEAT1, which is shown to affect the HIV-1 life cycle. We profiled 90 disease-related lncRNAs and found NRON (noncoding repressor of Nuclear Factor of Activated T cells [NFAT]) to be one of several lncRNAs whose expression was significantly altered following HIV-1 infection...
2015: Scientific Reports
https://www.readbyqxmd.com/read/24576854/an-hiv-encoded-antisense-long-noncoding-rna-epigenetically-regulates-viral-transcription
#5
Sheena Saayman, Amanda Ackley, Anne-Marie W Turner, Marylinda Famiglietti, Alberto Bosque, Matthew Clemson, Vicente Planelles, Kevin V Morris
The abundance of long noncoding RNAs (lncRNAs) and their wide range of functional roles in human cells are fast becoming realized. Importantly, lncRNAs have been identified as epigenetic modulators and consequently play a pivotal role in the regulation of gene expression. A human immunodeficiency virus-encoded antisense RNA transcript has recently been reported and we sought to characterize this RNA and determine its potential role in viral transcription regulation. The intrinsic properties of this human immunodeficiency virus-expressed lncRNA were characterized and the data presented here suggest that it functions as an epigenetic brake to modulate viral transcription...
June 2014: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/23362321/neat1-long-noncoding-rna-and-paraspeckle-bodies-modulate-hiv-1-posttranscriptional-expression
#6
Quan Zhang, Chia-Yen Chen, Venkat S R K Yedavalli, Kuan-Teh Jeang
Most of the human genome is transcribed into protein-noncoding RNAs (ncRNAs), including small ncRNAs and long ncRNAs (lncRNAs). Over the past decade, rapidly emerging evidence has increasingly supported the view that lncRNAs serve key regulatory and functional roles in mammal cells. HIV-1 replication relies on various cell functions. To date, while the involvement of host protein factors and microRNAs (miRNAs) in the HIV-1 life cycle has been extensively studied, the relationship between lncRNAs and HIV-1 remains uncharacterized...
2013: MBio
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