journal
MENU ▼
Read by QxMD icon Read
search

Current Opinion in Virology

journal
https://www.readbyqxmd.com/read/28822906/the-impact-of-htlv-1-on-the-cellular-genome
#1
REVIEW
Lucy Cook, Anat Melamed, Hiroko Yaguchi, Charles Rm Bangham
Human T-lymphotropic virus type-1 (HTLV-1) is the causative agent of adult T-cell leukaemia/lymphoma (ATL), an aggressive CD4+ T-cell malignancy. The mechanisms of leukaemogenesis in ATL are incompletely understood. Insertional mutagenesis has not previously been thought to contribute to the pathogenesis of ATL. However, the recent discovery that HTLV-1 binds the key chromatin architectural protein CTCF raises the hypothesis that HTLV-1 deregulates host gene expression by causing abnormal chromatin looping, bringing the strong HTLV-1 promoter-enhancer near to host genes that lie up to 2Mb from the integrated provirus...
August 17, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28818736/co-option-of-endogenous-viral-sequences-for-host-cell-function
#2
REVIEW
John A Frank, Cédric Feschotte
Eukaryotic genomes are littered with sequences of diverse viral origins, termed endogenous viral elements (EVEs). Here we used examples primarily drawn from mammalian endogenous retroviruses to document how the influx of EVEs has provided a source of prefabricated coding and regulatory sequences that were formerly utilized for viral infection and replication, but have been occasionally repurposed for cellular function. While EVE co-option has benefited a variety of host biological functions, there appears to be a disproportionate contribution to immunity and antiviral defense...
August 14, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28810166/humanized-mouse-models-of-latent-hiv-infection
#3
REVIEW
Maud Deruaz, Andrew M Tager
Antiretroviral therapy can efficiently control HIV viral replication, resulting in low viral loads and sustained CD4(+) T cell counts in HIV-infected persons. However, fast viral rebound occurs in most infected persons when therapy is interrupted. The principal component of persistent infection is a latent but replication-competent HIV reservoir. The long half-life of this reservoir is a major barrier to cure, and its elimination is the target of important research efforts. Animal models that can recapitulate this aspect of human infection are needed to examine the HIV reservoir in tissues in vivo, and to test eradication strategies...
August 12, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28810165/human-immune-system-mouse-models-of-ebola-virus-infection
#4
REVIEW
Jessica R Spengler, Joseph Prescott, Heinz Feldmann, Christina F Spiropoulou
Human immune system (HIS) mice, immunodeficient mice engrafted with human cells (with or without donor-matched tissue), offer a unique opportunity to study pathogens that cause disease predominantly or exclusively in humans. Several HIS mouse models have recently been used to study Ebola virus (EBOV) infection and disease. The results of these studies are encouraging and support further development and use of these models in Ebola research. HIS mice provide a small animal model to study EBOV isolates, investigate early viral interactions with human immune cells, screen vaccines and therapeutics that modulate the immune system, and investigate sequelae in survivors...
August 11, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28806695/use-of-peptide-aptamers-cationic-peptides-and-artificial-zinc-finger-proteins-to-generate-resistance-to-plant-viruses
#5
REVIEW
Takashi Sera
Various RNA/DNA viruses have caused severe infectious diseases in plants as well as animals, including humans, and been a threat to the production of agricultural crops. Therefore, prevention of plant virus infections is a major objective in crop protection. One attractive approach is to inhibit functions of viral proteins responsible for virus infections. In this review, I describe the status using such approaches to confer virus resistance to plants by three types of peptides/proteins: peptide aptamers, artificial zinc finger proteins and acidic peptides...
August 11, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28802707/boosting-innate-immunity-to-sustainably-control-diseases-in-crops
#6
REVIEW
Valerie Nicaise
Viruses cause epidemics in all major crops, threatening global food security. The development of efficient and durable resistance able to withstand viral attacks represents a major challenge for agronomy, and relies greatly on the understanding of the molecular dialogue between viral pathogens and their hosts. Research over the last decades provided substantial advances in the field of plant-virus interactions. Remarkably, the advent of studies of plant innate immunity has recently offered new strategies exploitable in the field...
August 10, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28803049/modeling-aging-in-hiv-infection-in-nonhuman-primates-to-address-an-emerging-challenge-of-the-post-art-era
#7
REVIEW
Tianyu He, Elizabeth Falwell, Egidio Brocca-Cofano, Ivona Pandrea
The advent of antiretroviral therapy (ART) has dramatically improved both quality and length of life for subjects infected with human immunodeficiency virus (HIV), delaying or preventing progression to acquired immunodeficiency syndrome (AIDS). However, the virus induces aging-related changes to the immune system which confound treatment. Additionally, the normal physiologic events that occur during aging lead to deficiencies in immunity which not only exacerbate HIV pathogenesis but also trigger a variety of comorbidities...
August 9, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28802204/humanized-mouse-models-to-study-human-cell-mediated-and-humoral-responses-to-dengue-virus
#8
REVIEW
Anuja Mathew
Several candidate dengue virus vaccines are in clinical trials and show promise as an effective measure to control dengue. However, it is becoming clear that additional vaccine candidates may be needed as there is concern about the durability of the immune response to all four serotypes of vaccine components and efficacy varies dependent on the immune status of the individual. The lack of an appropriate animal model to mimic human dengue has deterred the development of vaccines and anti-viral therapies to dengue virus...
August 9, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28802203/disentangling-the-origins-of-virophages-and-polintons
#9
REVIEW
Samuel Campbell, Amr Aswad, Aris Katzourakis
Virophages and polintons are part of a complex system that also involves eukaryotes, giant viruses, as well as other viruses and transposable elements. Virophages are cosmopolitan, being found in environments ranging from the Amazon River to Antarctic hypersaline lakes, while polintons are found in many single celled and multicellular eukaryotes. Virophages and polintons have a shared ancestry, but their exact origins are unknown and obscured by antiquity and extensive horizontal gene transfer (HGT). Paleovirology can help disentangle the complicated gene flow between these two, as well as their giant viral and eukaryotic hosts...
August 9, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28802147/generation-of-novel-resistance-genes-using-mutation-and-targeted-gene-editing
#10
REVIEW
Amit Gal-On, Marc Fuchs, Stewart Gray
Classical breeding for virus resistance is a lengthy process and is restricted by the availability of resistance genes. Precise genome editing is a 'dream technology' to improve plants for virus resistance and these tools have opened new and very promising ways to generate virus resistant plants by disrupting host susceptibility genes, or by increasing the expression of viral resistance genes. However, precise targets must be identified and their roles understood to minimize potential negative effects on the plant...
August 9, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28802146/epigenetic-manipulation-of-host-chromatin-by-kaposi-sarcoma-associated-herpesvirus-a-tumor-promoting-factor
#11
REVIEW
Thomas Günther, Adam Grundhoff
Molecular and epidemiological evidence links Kaposi sarcoma-associated herpesvirus (KSHV) to a number of malignancies of endothelial or B cell origin. As for most virus-associated cancers, however, the tumor initiating and promoting events remain poorly understood. Given the emerging role of epigenetic alterations as drivers of human cancers, an interesting (and as of yet under-explored) hypothesis is that viral manipulation of host cell chromatin may contribute to the pathogenesis of KSHV-associated tumors...
August 9, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28800552/utilization-of-engineered-resistance-to-viruses-in-crops-of-the-developing-world-with-emphasis-on-sub-saharan-africa
#12
REVIEW
Jan F Kreuze, Jari Pt Valkonen
Viral diseases in crop plants constitute a major obstacle to food security in the developing world. Subsistence crops, including cassava, sweetpotato, potato, banana, papaya, common bean, rice and maize are often infected with RNA and/or DNA viruses that cannot be controlled with pesticides. Hence, healthy planting materials and virus-resistant cultivars are essential for high yields of good quality. However, resistance genes are not available for all viral diseases of crop plants. Therefore, virus resistance engineered in plants using modern biotechnology methods is an important addition to the crop production toolbox...
August 8, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28800551/using-transgenic-plants-and-modified-plant-viruses-for-the-development-of-treatments-for-human-diseases
#13
REVIEW
Hwei-San Loh, Brian J Green, Vidadi Yusibov
Production of proteins in plants for human health applications has become an attractive strategy attributed by their potentials for low-cost production, increased safety due to the lack of human or animal pathogens, scalability and ability to produce complex proteins. A major milestone for plant-based protein production for use in human health was achieved when Protalix BioTherapeutics produced taliglucerase alfa (Elelyso(®)) in suspension cultures of a transgenic carrot cell line for the treatment of patients with Gaucher's disease, was approved by the USA Food and Drug Administration in 2012...
August 8, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28780440/epstein-barr-virus-a-master-epigenetic-manipulator
#14
REVIEW
Rona S Scott
Like all herpesviruses, the ability of Epstein-Barr virus (EBV) to establish life-long persistent infections is related to a biphasic viral lifecycle that involves latency and reactivation/lytic replication. Memory B cells serve as the EBV latency compartment where silencing of viral gene expression allows maintenance of the viral genome, avoidance of immune surveillance, and life-long carriage. Upon viral reactivation, viral gene expression is induced for replication, progeny virion production, and viral spread...
August 3, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28779693/extrafollicular-activities-perspectives-on-hiv-infection-germinal-center-independent-maturation-pathways-and-kshv-mediated-lymphoproliferation
#15
REVIEW
Jennifer Totonchy
Early events in the pathogenesis of KSHV-associated lymphoproliferations in the context of HIV disease remain poorly understood. Recent research indicates that latent HIV infection causes persistent immune dysfunction in B cell follicles. Simultaneously, lack of T cell immune surveillance in the lymph nodes dysregulates the biology of EBV. In sum, these defects bias B lymphocyte maturation away from traditional T cell-dependent germinal center-mediated pathways and towards extrafollicular pathways. Recent advances in B lymphocyte immunology suggest that extrafollicular maturation pathways for antibody secreting cells are more flexible and robust than previously believed...
August 2, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28779692/playing-with-fire-consequences-of-human-papillomavirus-dna-replication-adjacent-to-genetically-unstable-regions-of-host-chromatin
#16
REVIEW
Alison A McBride
Papillomaviruses are small DNA viruses that replicate persistently in the stratified epithelial surfaces of the host. They have minimal coding capacity and must hijack many cellular processes to complete their life cycle. For example, viral genomes are tethered to host chromatin to ensure that they are effectively partitioned in dividing cells, and the host DNA damage and repair pathways are usurped to replicate viral DNA in differentiated cells. These processes result in the close juxtaposition of viral DNA with host DNA that is undergoing replication stress...
August 2, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28778034/human-papillomaviruses-and-carcinogenesis-well-established-and-novel-models
#17
REVIEW
Daniele Viarisio, Lutz Gissmann, Massimo Tommasino
Human papillomaviruses (HPVs) infect the cutaneous or mucosal epithelia and are classified phylogenetically as genera and species. Persistent infections by the mucosal high-risk (HR) HPV types from genus alpha are associated with cancer development of the genital and upper respiratory tracts. The products of two early genes, E6 and E7, are the major HR HPV oncoproteins, being essential in all steps of the carcinogenic process. Cutaneous beta HPV types are proposed, together with ultraviolet (UV) radiation, to promote non-melanoma skin cancer development...
August 1, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28778033/induction-of-virus-resistance-by-exogenous-application-of-double-stranded-rna
#18
REVIEW
Neena Mitter, Elizabeth A Worrall, Karl E Robinson, Zhi Ping Xu, Bernard J Carroll
Exogenous application of double-stranded RNA (dsRNA) for virus resistance in plants represents a very attractive alternative to virus resistant transgenic crops or pesticides targeting virus vectors. However, the instability of dsRNA sprayed onto plants is a major challenge as spraying naked dsRNA onto plants provides protection against homologous viruses for only 5 days. Innovative approaches, such as the use of nanoparticles as carriers of dsRNA for improved stability and sustained release, are emerging as key disruptive technologies...
August 1, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28755652/transfer-and-modification-of-nlr-proteins-for-virus-resistance-in-plants
#19
REVIEW
Peter Moffett
NLR proteins confer resistance to multiple types of biotrophic pathogens, including viruses. NLRs are highly variable in sequence, suggesting that they are under selection pressure, but also that they may be manipulated to generate proteins with new recognition specificities. However, transferring of effective NLRs and engineering new specificities is subject to a number of constraints. Recent insights into NLR function suggest a number of reasons for these difficulties and new techniques have increased our ability to identify effective NLRs...
July 26, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28755651/pyramiding-resistance-conferring-gene-sequences-in-crops
#20
REVIEW
Marc Fuchs
Plant viruses can cause devastating diseases in many crops around the world. Genetic resistance and the adoption of resistant crop cultivars is the most desirable strategy to manage viruses. Single or multiple sources of resistance derived from host and/or virus gene sequences are used to develop resistant crop plants. Pyramiding sources of resistance is essential for achieving broad-spectrum and durable resistance and for protecting crops from commonly occurring mixed virus infections. Stacking resistance-conferring gene sequences into single crop cultivars is achieved by first, conventional breeding and the use of dominant and recessive host genes; second, genetic engineering and the deployment of virus-derived gene sequences or modified small plant RNAs for antiviral RNA interference defense, or of programmable nucleases to target viral gene sequences or to alter host factors that are critical to complete the virus infection cycle; and third, a combination of conventional breeding and genetic engineering...
July 26, 2017: Current Opinion in Virology
journal
journal
43585
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"