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There are three major types of human retroviruses, namely HIV, HTLV, and endogenous human retroviruses. This book presents the latest findings on the replication of these human retroviruses. This book is unique in that there has been no comparable book that integrates the findings from the three known classes of human retroviruses. Other books have focused on one of the three classes of human retroviruses individually. An accomplished international team of contributing authors have combined their expertise to provide cutting-edge findings in this important field. The book will be a valuable re
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Retrovirus infections. --- Retroviral infections --- Virus diseases
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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact
virus --- evolution --- human immunity --- endogenous retrovirus
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Eight percent of our DNA contains retroviruses that are millions of years old. Anna Marie Skalka explains how our evolving knowledge of these particles has advanced genetic engineering, gene delivery systems, and precision medicine. Retroviruses cause disease but also hold clues to prevention and treatment possibilities that are anything but retro.
Medicine --- Viruses --- Retrovirus infections. --- Retroviruses. --- Research --- History. --- Evolution.
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Retrotransposons are present in essentially all eukaryotic genomes and come in two basic flavors: those that are bracketed by long terminal repeats (LTRs) and share a common ancestor with retroviruses, and non-LTR retrotransposons that have a distinct lineage and remain transpositionally active in humans. Both types of retrotransposons replicate through an RNA intermediate, stably integrate into the host genome and have accumulated to a very high copy number in mammals and certain plant species. Autonomous elements produce transcripts capable of undergoing reverse transcription, and minimally encode proteins with reverse transcriptase, integrase/endonucleolytic, and nucleic acid chaperone activities. Retrotransposons are currently distinguished from viruses, since the process of retrotransposition is not infectious. However, this boundary may prove to be provisional as we learn more about these mobile genetic elements. The goal of this Special Issue of Viruses is to highlight progress in understanding the mechanism and consequences of retrotransposon movement. Several active research areas may be covered in reviews and research articles, including the roles of cellular modulators and defense systems, retrotransposon expression and replication, retrotransposon-induced mutations and their association with human diseases, and how these widely disseminated elements mold eukaryotic genomes.
Non-LTR retrotransposon --- Integration --- Human disease --- Endogenous retrovirus --- Reverse transcription --- Host factors --- Genome evolution --- LTR retrotransposon
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Human retroviruses, HIV and HTLV have been recognized as important pathogens because of their association with lethal diseases such as AIDS and ATL. Considerable resources and efforts have been directed at understanding the interaction between these retroviruses and their host which may provide clues as to how the infection can be controlled or prevented. Among the key scientific successes is the identification of intracellular “restriction factors” that have evolved as obstacles to the replication of pathogens including infectious retroviruses. The discovery of APOBEC, which are strong mutagens of retroviral genomes and intracellular retroelements, began a new era of intense research activities into the spectrum of intrinsic anti-HIV activity, leading to the identification of TRIM5a, BST2/Tetherin, and SAMHD1. In response, HIV has evolved several accessory genes as weaponries to evade these intracellular restriction activities. The intracellular antiretroviral defenses evolved in response to endogenous retroelements that make up more than 40% of the entire mammalian genome, and which are regarded as ancestors of infectious retroviruses. LTR-type retroelements are present in all higher eukaryotes, representing about 8% of the human genome. Non-LTR retroelements can be found at extremely high copy numbers also, with a significant portion of mammalin genomes consisting of LINEs. Mammalian genomes are modified by LINEs through insertions, but also by the indirect replication of non-autonomous retrotransposons such as SINEs. LINEs insertion was shown to have played, and continue to play important roles in genomic evolution and somatic genome mosaicism-mediated physiology. And, because retrotransposition can confer genetic diversity that is beneficial to the host, the vertebrate intrinsic immunity has evolved to support a balance between retroelement insertions that confer beneficial and those that cause deleterious gene disruptions. The articles published in this Research Topic should serve not only as valuable references for the field, but provide future topics of research for investigators that should further our understanding of the retrovirus, retroelements and their restrictions.
Retroviruses. --- HTLV (Viruses) --- HIV (Viruses) --- Retrovirus --- BST2/Tetherin --- HIV --- line --- HTLV --- APOBEC --- restriction factor --- Retroelement --- SAMHD1
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Medical microbiology, virology, parasitology --- Retroviruses --- Virology --- Rétrovirus --- Virologie --- Periodicals --- Research --- Périodiques --- Recherche --- Retroviridae. --- Retroviridae Infections. --- Retroviruses. --- Retrovirology. --- C-type RNA viruses --- Leukemogenic viruses --- Leukoviruses --- Oncornaviruses --- Oncoviruses --- Retroviridae --- RNA tumor viruses --- Infections, Retroviridae --- Infections, Retrovirus --- Retrovirus Infections --- Infection, Retroviridae --- Infection, Retrovirus --- Retroviridae Infection --- Retrovirus Infection --- Leukemogenic Viruses --- Oncovirinae --- Oncoviruses, Type C --- RNA Tumor Viruses --- Type C Oncoviruses --- C Oncovirus, Type --- C Oncoviruses, Type --- Leukemogenic Virus --- Leukovirus --- Oncornavirus --- Oncovirus --- Oncovirus, Type C --- RNA Tumor Virus --- Retrovirus --- Tumor Virus, RNA --- Tumor Viruses, RNA --- Type C Oncovirus --- Virus, Leukemogenic --- Virus, RNA Tumor --- Viruses, Leukemogenic --- Viruses, RNA Tumor --- retrovirus --- human retroviruses --- animal retroviruses --- HIV --- HTLV --- Oncogenic viruses --- RNA viruses --- XMRV Infection --- Xenotropic MuLV-related Virus Infection --- Xenotropic Murine Leukemia Virus-related Virus Infection --- Infection, XMRV --- Infections, XMRV --- XMRV Infections --- Xenotropic MuLV related Virus Infection --- Xenotropic Murine Leukemia Virus related Virus Infection --- Allergy --- allergieën --- Microbiology & Immunology --- hiv --- htlv --- Virologia
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Cats --- Feline leukemia. --- Cat leukemia --- Feline leukosis --- Leukemia, Feline --- Leukemia in animals --- Retrovirus infections --- Cat, Domestic --- Felis catus --- Felis domestica --- Felis silvestris catus --- Domestic animals --- Felis --- Behavior. --- Diseases. --- Virus diseases
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HIV/AIDS continues to be the pandemic of our times and there has not been a comprehensive medically based AIDS prevention book published in the last 5 years. It is estimated that 36 to 45 million people including 2-3 million children already are infected worldwide and an additional 4-7 million more are infected each year. There are about 6,000 new infections daily and about 12 million AIDS orphans. People receiving AIDS treatments feel well and have no detectable viral load, but still can infect others. And even when a vaccine is found, it will take many years before it can be administered a
HIV infections --- HIV (Viruses) --- Prevention. --- AIDS-associated retrovirus --- AIDS virus --- ARV (Viruses) --- HTLV-III (Viruses) --- HTLV-III-LAV (Viruses) --- Human immunodeficiency viruses --- Human T-cell leukemia virus III --- Human T-cell lymphotropic virus III --- Human T-lymphotropic virus III --- IDAV (Viruses) --- Immunodeficiency-associated virus --- LAV (Viruses) --- LAV-HTLV-III (Viruses) --- Lymphadenopathy-associated virus --- T-lymphotrophic virus III, Human --- HTLV (Viruses) --- Virus-induced immunosuppression
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Infeccions per VIH --- Infecció per virus d'immunodeficiència humana --- Infecció per retrovirus humans --- Infeccions per HIV --- Seropositivitat --- Sida --- Persones seropositives --- VIH (Virus) --- HIV infections --- Neurologic manifestations of general diseases. --- Complications. --- Neurologic symptoms of general diseases --- Neurological manifestations of general diseases --- Nervous system --- Symptoms --- Diseases
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