Abstract：
:Low pathogenic H7N9 influenza viruses have recently evolved to become highly pathogenic, raising concerns of a pandemic, particularly if these viruses acquire efficient human-to-human transmissibility. We compared a low pathogenic H7N9 virus with a highly pathogenic isolate, and two of its variants that represent neuraminidase inhibitor-sensitive and -resistant subpopulations detected within the isolate. The highly pathogenic H7N9 viruses replicated efficiently in mice, ferrets, and/or nonhuman primates, and were more pathogenic in mice and ferrets than the low pathogenic H7N9 virus, with the exception of the neuraminidase inhibitor-resistant virus, which showed mild-to-moderate attenuation. All viruses transmitted among ferrets via respiratory droplets, and the neuraminidase-sensitive variant killed several of the infected and exposed animals. Neuraminidase inhibitors showed limited effectiveness against these viruses in vivo, but the viruses were susceptible to a polymerase inhibitor. These results suggest that the highly pathogenic H7N9 virus has pandemic potential and should be closely monitored.
journal_name
Cell Host Microbejournal_title
Cell host & microbeauthors
Imai M,Watanabe T,Kiso M,Nakajima N,Yamayoshi S,Iwatsuki-Horimoto K,Hatta M,Yamada S,Ito M,Sakai-Tagawa Y,Shirakura M,Takashita E,Fujisaki S,McBride R,Thompson AJ,Takahashi K,Maemura T,Mitake H,Chiba S,Zhong G,Fandoi
10.1016/j.chom.2017.09.008subject
Has Abstractpub_date
2017-11-08 00:00:00pages
615-626.e8issue
5eissn
1931-3128issn
1934-6069pii
S1931-3128(17)30396-7journal_volume
22pub_type
杂志文章abstract：:The role of gut bacteria in complications of heart inflammation has previously not been fully understood. Gil-Cruz et al. (2019) demonstrate a commensal Bacteroides species that triggers a cross-immune response against a bacterial protein and heart epitope, causing cardiomyopathy. This study links commensal bacteria w...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2019.12.011
更新日期：2020-01-08 00:00:00
abstract：:Staphylococcus aureus epidemic strain USA300 is a highly successful pathogen. However, the underlying basis of this success is not clear. Now, Thurlow and colleagues (2013) provide evidence linking the bacterial arginine catabolic mobile element (ACME) to the dominance of USA300 as a pathogen of the skin. ...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2013.01.001
更新日期：2013-01-16 00:00:00
abstract：:Biofilms are surface-associated bacterial communities that play both beneficial and harmful roles in nature, medicine, and industry. Tolerant and persister cells are thought to underlie biofilm-related bacterial recurrence in medical and industrial contexts. Here, we review recent progress aimed at understanding the m...
journal_title：Cell host & microbe
pub_type： 杂志文章,评审
doi：10.1016/j.chom.2019.06.002
更新日期：2019-07-10 00:00:00
abstract：:The liver-specific microRNA, miR-122, stabilizes hepatitis C virus (HCV) RNA genomes by recruiting host argonaute 2 (AGO2) to the 5' end and preventing decay mediated by exonuclease Xrn1. However, HCV replication requires miR-122 in Xrn1-depleted cells, indicating additional functions. We show that miR-122 enhances HC...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2014.12.014
更新日期：2015-02-11 00:00:00
abstract：:The difficulty in detecting rare infected cells immediately after mucosal HIV transmission has hindered our understanding of the initial cells targeted by the virus. Working with the macaque simian immunodeficiency virus (SIV) vaginal challenge model, we developed methodology to identify discrete foci of SIV (mac239) ...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2016.03.005
更新日期：2016-04-13 00:00:00
abstract：:Cryopyrin (CIAS1, NLRP3) and ASC are components of the inflammasome, a multiprotein complex required for caspase-1 activation and cytokine IL-1beta production. CIAS1 mutations underlie autoinflammation characterized by excessive IL-1beta secretion. Disease-associated cryopyrin also causes a program of necrosis-like ce...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2007.07.009
更新日期：2007-09-13 00:00:00
abstract：:Hepatitis C virus genome replication occurs in endoplasmic reticulum-derived membrane compartments, but it is unknown how these structures arise. In this issue of Cell Host & Microbe, Reiss and colleagues (2011) show that the virus recruits a specific lipid kinase to replication sites, stimulates its kinase activity, ...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2011.01.002
更新日期：2011-01-20 00:00:00
abstract：:Although Drosophila systemic immunity is extensively studied, little is known about the fly's intestine-specific responses to bacterial infection. Global gene expression analysis of Drosophila intestinal tissue to oral infection with the Gram-negative bacterium Erwinia carotovora revealed that immune responses in the ...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2009.01.003
更新日期：2009-02-19 00:00:00
abstract：:Anti-helminth immunity involves CD4+ T cells, yet the precise effector mechanisms responsible for parasite killing or expulsion remain elusive. We now report an essential role for antibodies in mediating immunity against the enteric helminth Heligmosomoides polygyrus (Hp), a natural murine parasite that establishes ch...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2008.08.014
更新日期：2008-10-16 00:00:00
abstract：:Vaccines are needed to combat the global rise in fungal diseases. In this issue of Cell Host & Microbe, Wüthrich et al. (2015) identify calnexin as a target of antigen-specific CD4 T cell responses against multiple fungal pathogens. This study illustrates that a conserved epitope triggers convergent cell-mediated immu...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2015.03.012
更新日期：2015-04-08 00:00:00
abstract：:Successful viruses must overcome the body's immune defenses. In this issue of Cell Host & Microbe, Goffinet et al. (2009) provide evidence that the host protein CD317, the target of the HIV Vpu protein, is part of an ancient innate immune response directed against budding viruses. ...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2009.02.002
更新日期：2009-03-19 00:00:00
abstract：:Influenza viruses are important pathogens which pose an ongoing threat to public health due to their ability to mutate and evade immunity elicited by prior infection or vaccination. Their evolutionary diversity is facilitated by the plasticity of the antigenically variable head domain of the major surface glycoprotein...
journal_title：Cell host & microbe
pub_type： 杂志文章,评审
doi：10.1016/j.chom.2018.06.016
更新日期：2018-07-11 00:00:00
abstract：:An important report by Bryk et al. in this issue of Cell Host & Microbe describes the properties of a rhodanine prodrug active against nonmultiplying Mycobacterium tuberculosis (Mtb). Considering the tolerance of nonreplicating Mtb to most currently available agents, such a drug could be a major addition to our antitu...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2008.02.013
更新日期：2008-03-13 00:00:00
abstract：:In nonmyeloid cells, Shigella hijacks the mitochondrial checkpoint of cell death, thereby inducing a regulated form of necrosis depending on Bnip3 and cyclophilin D. Carneiro et al. (2009) describe the interplay between this program and a prosurvival response transmitted via the Nod1/Rip2/NF-kappaB/Bcl-2 axis, which d...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章,评审
doi：10.1016/j.chom.2009.01.002
更新日期：2009-02-19 00:00:00
abstract：:Neutralizing antibodies (NAbs) are traditionally thought to inhibit virus infection by preventing virion entry into target cells. In addition, antibodies can engage Fc receptors (FcRs) on immune cells to activate antiviral responses. We describe a mechanism by which NAbs inhibit chikungunya virus (CHIKV), the most com...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2018.07.018
更新日期：2018-09-12 00:00:00
abstract：:Intestinal reovirus infection can trigger T helper 1 (TH1) immunity to dietary antigen, raising the question of whether other viruses can have a similar impact. Here we show that the acute CW3 strain of murine norovirus, but not the persistent CR6 strain, induces TH1 immunity to dietary antigen. This property of CW3 i...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2018.10.004
更新日期：2018-11-14 00:00:00
abstract：:Live attenuated vaccines remain the safest, most cost-effective intervention against viral infections. Because live vaccine strains are generated empirically and the basis for attenuation is usually ill defined, many important viruses lack an efficient live vaccine. Here, we present a general strategy for the rational...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2008.08.003
更新日期：2008-09-11 00:00:00
abstract：:The ongoing epidemic of Zika virus (ZIKV) illustrates the importance of flaviviruses as emerging human pathogens. All vector-borne flaviviruses studied thus far have to overcome type I interferon (IFN) to replicate and cause disease in vertebrates. The mechanism(s) by which ZIKV antagonizes IFN signaling is unknown. H...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2016.05.009
更新日期：2016-06-08 00:00:00
abstract：:Alphaviruses infect cells via a low-pH-triggered membrane fusion reaction mediated by the class II virus fusion protein E1, an elongated molecule with three extramembrane domains (DI-III). E1 drives fusion by inserting its fusion peptide loop into the target membrane and refolding to a hairpin-like trimer in which DII...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2008.10.012
更新日期：2008-12-11 00:00:00
abstract：:The type 2 immune response evoked by intestinal nematode parasites contributes to worm expulsion and tolerance to associated tissue damage. We investigated whether this host response is affected by blocking signaling by the putative endogenous danger signal adenosine, which can be released during inflammation and host...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2014.02.001
更新日期：2014-03-12 00:00:00
abstract：:Here I revisit our early experiments published in Cell Host & Microbe (Turnbaugh et al., 2008) showing that a diet rich in fat and simple sugars alters the gut microbiome in a manner that contributes to host adiposity, and reflect upon the remarkable advances and remaining challenges in this field. ...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2017.02.021
更新日期：2017-03-08 00:00:00
abstract：:During viral infection, RIG-I-like receptors (RLRs) are activated upon dephosphorylation by the phosphatase PP1, resulting in type I interferon production. In this issue, Davis et al. (2014) and Mesman et al. (2014) show that measles virus inhibits this antiviral response by targeting PP1 and thus preventing RLR depho...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2014.06.013
更新日期：2014-07-09 00:00:00
abstract：:Control of virus infection relies on the stimulation of interferon-stimulated genes (ISGs) that inhibit viral replication. In a recent Nature paper, Gizzi et al. (2018) discovered that the ISG viperin inhibits virus replication by generating the ribonucleotide ddhCTP, which interferes with RNA synthesis, thus offering...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2018.07.014
更新日期：2018-08-08 00:00:00
abstract：:The oral microbial community represents the best-characterized consortium associated with the human host. There are strong correlations between the qualitative composition of the oral microbiota and clinically healthy or diseased states. However, additional studies are needed to elucidate the mechanisms that define th...
journal_title：Cell host & microbe
pub_type： 杂志文章,评审
doi：10.1016/j.chom.2011.09.008
更新日期：2011-10-20 00:00:00
abstract：:Rabies virus (RABV), the etiological agent for the lethal disease of rabies, is a deadly zoonotic pathogen. The RABV glycoprotein (RABV-G) is a key factor mediating virus entry and the major target of neutralizing antibodies. Here, we report the crystal structures of RABV-G solved in the free form at ∼pH-8.0 and in th...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2019.12.012
更新日期：2020-03-11 00:00:00
abstract：:Mounting an effective innate immune response against pathogens requires the rapid and global reprogramming of host cellular processes. Here we employed complementary proteomic methods to identify differentially regulated proteins early during a plant's defense response. Besides defense-related proteins, constituents o...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2009.10.005
更新日期：2009-11-19 00:00:00
abstract：:Human noroviruses are a major cause of epidemic and sporadic gastroenteritis worldwide and can chronically infect immunocompromised patients. Efforts to develop effective vaccines and antivirals have been hindered by the uncultivable nature and extreme genetic diversity of human noroviruses. Although they remain a par...
journal_title：Cell host & microbe
pub_type： 杂志文章,评审
doi：10.1016/j.chom.2014.05.015
更新日期：2014-06-11 00:00:00
abstract：:Monoclonal antibodies derived from blood plasma cells of acute HIV-1-infected individuals are predominantly targeted to the HIV Env gp41 and cross-reactive with commensal bacteria. To understand this phenomenon, we examined anti-HIV responses in ileum B cells using recombinant antibody technology and probed their rela...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2014.07.003
更新日期：2014-08-13 00:00:00
abstract：:Variant surface antigens play an important role in Plasmodium falciparum malaria pathogenesis and in immune evasion by the parasite. Although most work to date has focused on P. falciparum Erythrocyte Membrane Protein 1 (PfEMP1), two other multigene families encoding STEVOR and RIFIN are expressed in invasive merozoit...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2014.06.004
更新日期：2014-07-09 00:00:00
abstract：:Modification of the intestinal microbiome is an emerging target to improve health and prevent or treat a number of diseases. In this issue of Cell Host & Microbe, Maldonado-Gómez et al. (2016) uncover the basic principles that govern the successful establishment and persistence of an exogenously introduced gut bacteri...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2016.09.012
更新日期：2016-10-12 00:00:00
