Abstract：
:HIV-1 Nef, which is required for the efficient onset of AIDS, enhances viral replication and infectivity by exerting multiple effects on infected cells. Nef downregulates cell-surface MHC-I molecules by an uncharacterized PI3K pathway requiring the actions of two Nef motifs-EEEE(65) and PXXP(75). We report that the Nef EEEE(65) targeting motif enables Nef PXXP(75) to bind and activate a trans-Golgi network-localized Src family tyrosine kinase (SFK). The Nef/SFK complex then recruits and phosphorylates the tyrosine kinase ZAP-70, which binds class I PI3K to trigger MHC-I downregulation in primary CD4+ T cells. In promonocytic cells, Nef/SFK recruits the ZAP-70 homolog Syk to downregulate MHC-I, implicating this PI3K pathway in multiple HIV-1 reservoirs. Isoform-specific PI3K inhibitors repress MHC-I downregulation, identifying them as potential therapeutic agents to combat HIV-1. The discovery of this Nef-SFK-ZAP-70/Syk-PI3K signaling pathway explains the hierarchal role of the Nef motifs in effecting immunoevasion.
journal_name
Cell Host Microbejournal_title
Cell host & microbeauthors
Hung CH,Thomas L,Ruby CE,Atkins KM,Morris NP,Knight ZA,Scholz I,Barklis E,Weinberg AD,Shokat KM,Thomas Gdoi
10.1016/j.chom.2007.03.004subject
Has Abstractpub_date
2007-04-19 00:00:00pages
121-33issue
2eissn
1931-3128issn
1934-6069pii
S1931-3128(07)00043-1journal_volume
1pub_type
杂志文章abstract：:In a recent Science paper, Teles et al. (2013) show that type I and II interferons (IFNs) are reciprocally expressed in the polar immune forms of leprosy, with type I IFNs inducing IL-10 that interferes with the antimycobacterial effects of type II IFNs (IFNγ) at the site of infection. ...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2013.04.001
更新日期：2013-04-17 00:00:00
abstract：:During cell entry, non-enveloped viruses undergo partial uncoating to expose membrane lytic proteins for gaining access to the cytoplasm. We report that adenovirus uses membrane piercing to induce and hijack cellular wound removal processes that facilitate further membrane disruption and infection. Incoming adenovirus...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2015.06.006
更新日期：2015-07-08 00:00:00
abstract：:Invasion of epithelial cells by Shigella is a critical step in the pathogenesis of bacillary dysentery. In this issue of Cell Host & Microbe, Bergounioux et al. (2012) uncover a complex interplay of proinvasion, prosurvival, and prodeath signals centered on the activation of calpain protease by the Shigella VirA prote...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2012.02.004
更新日期：2012-03-15 00:00:00
abstract：:Defensins are naturally occurring antimicrobial peptides that disrupt bacterial membranes and prevent bacterial invasion of the host. Emerging studies indicate that certain defensins also block virus infection; however, the mechanism(s) involved are poorly understood. We demonstrate that human alpha-defensins inhibit ...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2007.12.001
更新日期：2008-01-17 00:00:00
abstract：:The clinically silent Plasmodium liver stage is an obligatory step in the establishment of malaria infection and disease. We report here that expression of heme oxygenase-1 (HO-1, encoded by Hmox1) is upregulated in the liver following infection by Plasmodium berghei and Plasmodium yoelii sporozoites. HO-1 overexpress...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2008.04.003
更新日期：2008-05-15 00:00:00
abstract：:Enteric pathogens must overcome intestinal defenses to establish infection. In Drosophila, the ERK signaling pathway inhibits enteric virus infection. The intestinal microflora also impacts immunity but its role in enteric viral infection is unknown. Here we show that two signals are required to activate antiviral ERK...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2015.10.010
更新日期：2015-11-11 00:00:00
abstract：:Metabolic coupling of intracellular pathogens with host cells is essential for successful colonization of the host. Establishment of intracellular infection by the protozoan Trypanosoma cruzi leads to the development of human Chagas' disease, yet the functional contributions of the host cell toward the infection proce...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2012.11.011
更新日期：2013-01-16 00:00:00
abstract：:Crosstalk between immune cells and the microbiota in mucosal tissues can set an individual on a trajectory toward health or disease. Little is known about these early-life events in the human respiratory tract. We examined bacterial colonization and immune system maturation in the lower airways over the first year of ...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2018.10.019
更新日期：2018-12-12 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：:Systemic fungal infections trigger marked immune-regulatory disturbances, but the mechanisms are poorly understood. We report that the pathogenic yeast of Blastomyces dermatitidis elaborates dipeptidyl-peptidase IVA (DppIVA), a close mimic of the mammalian ectopeptidase CD26, which modulates critical aspects of hemato...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2016.02.001
更新日期：2016-03-09 00:00:00
abstract：:Microbial CRISPR-Cas acts as a defense, but also as a gatekeeper controlling the flow of new genes into microbial genomes. In a recent Cell paper, Jiang et al. (2016) uncover the functional importance of transcription-dependent RNA targeting in type III-A CRISPR-Cas antiviral defense and provide insight into the co-ev...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2016.01.015
更新日期：2016-02-10 00:00:00
abstract：:Fecal transfer from healthy donors is being explored as a microbiome modality. MicroRNAs (miRNAs) have been found to affect the microbiome. Multiple sclerosis (MS) patients have been shown to have an altered gut microbiome. Here, we unexpectedly found that transfer of feces harvested at peak disease from the experimen...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2019.10.008
更新日期：2019-12-11 00:00:00
abstract：:Lifestyle, obesity, and the gut microbiome are important risk factors for metabolic disorders. We demonstrate in 1,976 subjects of a German population cohort (KORA) that specific microbiota members show 24-h oscillations in their relative abundance and identified 13 taxa with disrupted rhythmicity in type 2 diabetes (...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2020.06.004
更新日期：2020-08-12 00:00:00
abstract：:Interactions between the host and its microbiota are of mutual benefit and promote health. Complex molecular pathways underlie this dialog, but the identity of microbe-derived molecules that mediate the mutualistic state remains elusive. Helicobacter hepaticus is a member of the mouse intestinal microbiota that is tol...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2017.11.002
更新日期：2017-12-13 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：:Overcoming the cellular type I interferon (IFN) host defense response is critical for a virus to ensure successful infection. Investigating the effects of human adenovirus (HAdV) infection on global cellular histone posttranslational modification (hPTM), we discovered that virus infection-induced activation of IFN sig...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2012.05.005
更新日期：2012-06-14 00:00:00
abstract：:Much of the mutualistic relationship between humans and their resident intestinal Bacteroides species is founded on glycans. The host provides plant polysaccharides and host-derived glycans and, in return, receives beneficial end products of bacterial fermentation. Glycans from the bacteria themselves are required for...
journal_title：Cell host & microbe
pub_type： 杂志文章,评审
doi：10.1016/j.chom.2009.05.010
更新日期：2009-06-18 00:00:00
abstract：:Poxviruses are large DNA viruses that include the causal agent of human smallpox and vaccinia virus. Poxviruses replicate in cytoplasmic foci known as DNA factories. Here we show that a virus-encoded transcription factor, viral mRNA, cellular RNA-binding protein heterodimer G3BP/Caprin-1 (p137), translation initiation...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2007.08.005
更新日期：2007-10-11 00:00:00
abstract：:Peptidoglycan recognition proteins (PGRPs or Pglyrps) regulate antibacterial responses in Drosophila, yet their functions in humans remain unclear. In this issue of Cell Host & Microbe, Saha and colleagues report that mammalian PGRPs can prevent aberrant interferon-gamma--induced inflammatory damage in vivo by modulat...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2010.07.010
更新日期：2010-08-19 00:00:00
abstract：:Herpesviruses subvert immune cell activation by inhibiting NK cell receptor (NKG2D)-activating ligands such as MICB. A human cytomegalovirus microRNA was recently shown to repress MICB expression. Nachmani et al. (2009) extend this finding to two other human herpesviruses, providing evidence for a conserved functional...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2009.03.009
更新日期：2009-04-23 00:00:00
abstract：:RNA interference (RNAi) has been extensively used to identify host factors affecting virus infection but requires exogenous delivery of short interfering RNAs (siRNAs), thus limiting the technique to nonphysiological infection models and a single defined cell type. We report an alternative screening approach using siR...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2013.08.007
更新日期：2013-09-11 00:00:00
abstract：:Eradication of pathogens from the bloodstream is critical to prevent disseminated infections and sepsis. Kupffer cells in the liver form an intravascular firewall that captures and clears pathogens from the blood. Here, we show that the catching and killing of circulating pathogens by Kupffer cells in vivo are promote...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2020.07.014
更新日期：2020-11-11 00:00:00
abstract：:Hepatitis C virus (HCV) vaccine efforts are hampered by the extensive genetic diversity of HCV envelope glycoproteins E1 and E2. Structures of broadly neutralizing antibodies (bNAbs) (e.g., HEPC3, HEPC74) isolated from individuals who spontaneously cleared HCV infection facilitate immunogen design to elicit antibodies...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2018.10.009
更新日期：2018-11-14 00:00:00
abstract：:Microtubules play an important role in the transport of viral pathogens during the establishment of their infection cycles. The microtubule cytoskeleton also facilitates efficient release of newly assembled progeny at later stages of infection. However, the precise effects of viral infection on microtubule dynamics ar...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2007.04.007
更新日期：2007-05-17 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：:Proviral latency is a major barrier to a cure for HIV. In this issue of Cell Host & Microbe, Hataye et al. (2019) show that reactivation of HIV latency is a non-deterministic, highly stochastic (i.e., noisy) process and propose that stochastic transitions to exponential viral expansion require a critical threshold of ...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2019.11.010
更新日期：2019-12-11 00:00:00
abstract：:The intestinal microbiota, which is composed of bacteria, viruses, and micro-eukaryotes, acts as an accessory organ system with distinct functions along the intestinal tract that are critical for health. This review focuses on how the microbiota drives intestinal disease through alterations in microbial community arch...
journal_title：Cell host & microbe
pub_type： 杂志文章,评审
doi：10.1016/j.chom.2015.04.008
更新日期：2015-05-13 00:00:00
abstract：:Autophagy is genetically associated with inflammatory bowel disease (IBD); however, its role remains unclear in disease pathogenesis. Three recent studies reveal a novel cytoprotective role of autophagy during viral, bacterial, and protozoan-triggered IBD (Burger et al., 2018; Matsuzawa-Ishimoto et al., 2017; Pott et ...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2018.01.015
更新日期：2018-02-14 00:00:00
abstract：:The intracellular microbial nucleic acid sensors, TLR3 and STING, recognize pathogen molecules and signal to activate the interferon pathway. The TIR-domain containing protein TRIF is the sole adaptor of TLR3. Here, we report an essential role for TRIF in STING signaling: various activators of STING could not induce g...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2016.08.002
更新日期：2016-09-14 00:00:00
abstract：:Pathogens commonly utilize endocytic pathways to gain cellular access. The endosomal pattern recognition receptors TLR7 and TLR9 detect pathogen-encoded nucleic acids to initiate MyD88-dependent proinflammatory responses to microbial infection. Using genome-wide RNAi screening and integrative systems-based analysis, w...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2012.02.002
更新日期：2012-03-15 00:00:00
