Abstract:
:Hepatitis B virus infection (HBV) is a major risk factor for the development of hepatocellular carcinoma. HBV replicates from a covalently closed circular DNA (cccDNA) that remains as an episome within the nucleus of infected cells and serves as a template for the transcription of HBV RNAs. The regulatory protein HBx has been shown to be essential for cccDNA transcription in the context of infection. Here we identified Spindlin1, a cellular Tudor-domain protein, as an HBx interacting partner. We further demonstrated that Spindlin1 is recruited to the cccDNA and inhibits its transcription in the context of infection. Spindlin1 knockdown induced an increase in HBV transcription and in histone H4K4 trimethylation at the cccDNA, suggesting that Spindlin1 impacts on epigenetic regulation. Spindlin1-induced transcriptional inhibition was greater for the HBV virus deficient for the expression of HBx than for the HBV WT virus, suggesting that HBx counteracts Spindlin1 repression. Importantly, we showed that the repressive role of Spindlin1 is not limited to HBV transcription but also extends to other DNA virus that replicate within the nucleus such as Herpes Simplex Virus type 1 (HSV-1). Taken together our results identify Spindlin1 as a critical component of the intrinsic antiviral defense and shed new light on the function of HBx in HBV infection.
journal_name
PLoS Pathogjournal_title
PLoS pathogensauthors
Ducroux A,Benhenda S,Rivière L,Semmes OJ,Benkirane M,Neuveut Cdoi
10.1371/journal.ppat.1004343subject
Has Abstractpub_date
2014-09-11 00:00:00pages
e1004343issue
9eissn
1553-7366issn
1553-7374pii
PPATHOGENS-D-14-00359journal_volume
10pub_type
杂志文章相关文献
PLoS Pathogens文献大全abstract::Epstein-Barr virus (EBV) and related lymphocryptoviruses (LCV) from non-human primates infect B cells, transform their growth to facilitate life-long viral persistence in the host, and contribute to B cell oncogenesis. Co-evolution of LCV with their primate hosts has led to species-specificity so that LCVs preferentia...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1006772
更新日期:2017-12-20 00:00:00
abstract::The picornaviruses coxsackievirus A24 variant (CVA24v) and enterovirus 70 (EV70) cause continued outbreaks and pandemics of acute hemorrhagic conjunctivitis (AHC), a highly contagious eye disease against which neither vaccines nor antiviral drugs are currently available. Moreover, these viruses can cause symptoms in t...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1004401
更新日期:2014-10-16 00:00:00
abstract::The double-stranded RNA-activated protein kinase R (PKR) is a key regulator of the innate immune response. Activation of PKR during viral infection culminates in phosphorylation of the alpha subunit of the eukaryotic translation initiation factor 2 (eIF2alpha) to inhibit protein translation. A broad range of regulator...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1000311
更新日期:2009-02-01 00:00:00
abstract::Herpes Simplex Virus 1 (HSV1) is amongst the most clinically advanced oncolytic virus platforms. However, efficient and sustained viral replication within tumours is limiting. Rapamycin can stimulate HSV1 replication in cancer cells, but active-site dual mTORC1 and mTORC2 (mammalian target of rapamycin complex 1 and 2...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1007264
更新日期:2018-08-23 00:00:00
abstract::During immature capsid assembly, HIV-1 genome packaging is initiated when Gag first associates with unspliced HIV-1 RNA by a poorly understood process. Previously, we defined a pathway of sequential intracellular HIV-1 capsid assembly intermediates; here we sought to identify the intermediate in which HIV-1 Gag first ...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1006977
更新日期:2018-04-17 00:00:00
abstract::In human cytomegalovirus (HCMV), tropism to epithelial and endothelial cells is dependent upon a pentameric complex (PC). Given the structure of the placenta, the PC is potentially an important neutralizing antibody target antigen against congenital infection. The guinea pig is the only small animal model for congenit...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1005755
更新日期:2016-07-07 00:00:00
abstract::Elucidating the mechanism of action of trypanocidal compounds is an important step in the development of more efficient drugs against Trypanosoma brucei. In a screening approach using an RNAi library in T. brucei bloodstream forms, we identified a member of the mitochondrial carrier family, TbMCP14, as a prime candida...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1004875
更新日期:2015-05-06 00:00:00
abstract::In host-pathogen interactions, the struggle for iron may have major consequences on the outcome of the disease. To overcome the low solubility and bio-availability of iron, bacteria have evolved multiple systems to acquire iron from various sources such as heme, hemoglobin and ferritin. The molecular basis of iron acq...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1003935
更新日期:2014-02-13 00:00:00
abstract::Hepatitis C virus (HCV) particles closely mimic human very-low-density lipoproteins (VLDL) to evade humoral immunity and to facilitate cell entry. However, the principles that govern HCV association with VLDL components are poorly defined. Using an siRNA screen, we identified ABHD5 (α/β hydrolase domain containing pro...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1005568
更新日期:2016-04-28 00:00:00
abstract::HIV-1 strains harboring immune escape mutations can persist in circulation, but the impact of selection by multiple HLA alleles on population HIV-1 dynamics remains unclear. In Japan, HIV-1 Reverse Transcriptase codon 135 (RT135) is under strong immune pressure by HLA-B*51:01-restricted and HLA-B*52:01-restricted T ce...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1009177
更新日期:2020-12-28 00:00:00
abstract::A central question in Leishmania research is why most species cause cutaneous infections but others cause fatal visceral disease. Interestingly, L. donovani causes both visceral and cutaneous leishmaniasis in Sri Lanka. L. donovani clinical isolates were therefore obtained from cutaneous leishmaniasis (CL-SL) and visc...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1004244
更新日期:2014-07-03 00:00:00
abstract::Human Papillomavirus (HPV) 16 E7 protein promotes the transformation of HPV infected epithelium to malignancy. Here, we use a murine model in which the E7 protein of HPV16 is expressed as a transgene in epithelium to show that mast cells are recruited to the basal layer of E7-expressing epithelium, and that this recru...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1004466
更新日期:2014-10-23 00:00:00
abstract::RNA interference (RNAi) pathways are widespread in metaozoans but the genes required show variable occurrence or activity in eukaryotic microbes, including many pathogens. While some Leishmania lack RNAi activity and Argonaute or Dicer genes, we show that Leishmania braziliensis and other species within the Leishmania...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1001161
更新日期:2010-10-28 00:00:00
abstract::The novel human coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a pandemic. Critical to the rapid evaluation of vaccines and antivirals against SARS-CoV-2 is the development of tractable animal models to understand the adaptive immune response to the virus. To this end, the use of ...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1009163
更新日期:2020-12-16 00:00:00
abstract::Dissemination of HIV in the host involves transit of the virus and virus-infected cells across the lymphatic endothelium. HIV may alter lymphatic endothelial permeability to foster dissemination, but the mechanism is largely unexplored. Using a primary human lymphatic endothelial cell model, we found that HIV-1 envelo...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1002461
更新日期:2012-01-01 00:00:00
abstract::Leishmania donovani causes visceral leishmaniasis (VL), which is typically fatal without treatment. There is substantial variation between individuals in rates of disease progression, response to treatment and incidence of post-treatment sequelae, specifically post-kala-azar dermal leishmaniasis (PKDL). Nevertheless, ...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1008456
更新日期:2020-04-13 00:00:00
abstract::In nature, larvae of the fruitfly Drosophila melanogaster are commonly infected by parasitoid wasps, and so have evolved a robust immune response to counter wasp infection. In this response, fly immune cells form a multilayered capsule surrounding the wasp egg, leading to death of the parasite. Many of the molecular m...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1002819
更新日期:2012-01-01 00:00:00
abstract::Paramyxoviruses are known to replicate in the cytoplasm and bud from the plasma membrane. Matrix is the major structural protein in paramyxoviruses that mediates viral assembly and budding. Curiously, the matrix proteins of a few paramyxoviruses have been found in the nucleus, although the biological function associat...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1001186
更新日期:2010-11-11 00:00:00
abstract::Legionella pneumophila translocates multiple bacterial effector proteins into host cells to direct formation of a replication vacuole for the bacterium. The emerging consensus is that formation of this compartment involves recruitment of membrane material that traffics between the endoplasmic reticulum (ER) and Golgi....
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.0020034
更新日期:2006-04-01 00:00:00
abstract::Israeli acute paralysis virus (IAPV) is a widespread RNA virus of honey bees that has been linked with colony losses. Here we describe the transmission, prevalence, and genetic traits of this virus, along with host transcriptional responses to infections. Further, we present RNAi-based strategies for limiting an impor...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1004261
更新日期:2014-07-31 00:00:00
abstract::The HIV-1 envelope glycoprotein (Env) trimer is located on the surface of the virus and is the target of broadly neutralizing antibodies (bNAbs). Recombinant native-like soluble Env trimer mimetics, such as SOSIP trimers, have taken a central role in HIV-1 vaccine research aimed at inducing bNAbs. We therefore perform...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1007920
更新日期:2019-07-15 00:00:00
abstract::Transformation is an important mechanism of microbial evolution through which bacteria have been observed to rapidly adapt in response to clinical interventions; examples include facilitating vaccine evasion and the development of penicillin resistance in the major respiratory pathogen Streptococcus pneumoniae. To cha...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1002745
更新日期:2012-01-01 00:00:00
abstract::Intracellular Toll-like receptors (TLRs) expressed by dendritic cells recognize nucleic acids derived from pathogens and play an important role in the immune responses against the influenza virus (IAV), a single-stranded RNA sensed by different receptors including TLR7. However, the importance of TLR7 processing in th...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1002841
更新日期:2012-01-01 00:00:00
abstract::Information on the growth rate and metabolism of microbial pathogens that cause long-term chronic infections is limited, reflecting the absence of suitable tools for measuring these parameters in vivo. Here, we have measured the replication and physiological state of Leishmania mexicana parasites in murine inflammator...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1004683
更新日期:2015-02-25 00:00:00
abstract::Nuclear factor of activated T cells 5 (NFAT5)/Tonicity enhancer binding protein (TonEBP) is a transcription factor induced by hypertonic stress in the kidney. However, the function of NFAT5 in other organs has rarely been studied, even though it is ubiquitously expressed. Indeed, although NFAT5 was reported to be crit...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1006744
更新日期:2017-12-08 00:00:00
abstract::Phytopathogenic ascomycete fungi possess huge effector repertoires that are dominated by hundreds of sequence-unrelated small secreted proteins. The molecular function of these effectors and the evolutionary mechanisms that generate this tremendous number of singleton genes are largely unknown. To get a deeper underst...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1005228
更新日期:2015-10-27 00:00:00
abstract::The protozoan Trypanosoma cruzi almost invariably establishes life-long infections in humans and other mammals, despite the development of potent host immune responses that constrain parasite numbers. The consistent, decades-long persistence of T. cruzi in human hosts arises at least in part from the remarkable level ...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1009254
更新日期:2021-01-28 00:00:00
abstract::Babesia bovis is an apicomplexan tick-transmitted pathogen of cattle imposing a global risk and severe constraints to livestock health and economic development. The complete genome sequence was undertaken to facilitate vaccine antigen discovery, and to allow for comparative analysis with the related apicomplexan hemop...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.0030148
更新日期:2007-10-19 00:00:00
abstract::Modified vaccinia virus Ankara (MVA) is an attenuated double-stranded DNA poxvirus currently developed as a vaccine vector against HIV/AIDS. Profiling of the innate immune responses induced by MVA is essential for the design of vaccine vectors and for anticipating potential adverse interactions between naturally acqui...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1000480
更新日期:2009-06-01 00:00:00
abstract::The prevalence of antibiotic resistance genes in pathogenic bacteria is a major challenge to treating many infectious diseases. The spread of these genes is driven by the strong selection imposed by the use of antibacterial drugs. However, in the absence of drug selection, antibiotic resistance genes impose a fitness ...
journal_title:PLoS pathogens
pub_type: 杂志文章
doi:10.1371/journal.ppat.1002000
更新日期:2011-02-01 00:00:00