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 gut are regulated by the Imd and JAK-STAT pathways, but not the Toll pathway. Ingestion of bacteria had a dramatic impact on the physiology of the gut that included modulation of stress response and increased stem cell proliferation and epithelial renewal. Our data suggest that gut homeostasis is maintained through a balance between cell damage due to the collateral effects of bacteria killing and epithelial repair by stem cell division. The Drosophila gut provides a powerful model to study the integration of stress and immunity with pathways associated with stem cell control, and this study should prove to be a useful resource for such further studies.
journal_name
Cell Host Microbejournal_title
Cell host & microbeauthors
Buchon N,Broderick NA,Poidevin M,Pradervand S,Lemaitre Bdoi
10.1016/j.chom.2009.01.003subject
Has Abstractpub_date
2009-02-19 00:00:00pages
200-11issue
2eissn
1931-3128issn
1934-6069pii
S1931-3128(09)00028-6journal_volume
5pub_type
杂志文章abstract：:RNA interference (RNAi) is an established antiviral defense mechanism in plants and invertebrates. Whether RNAi serves a similar function in mammalian cells remains unresolved. We find that in some cell types, mammalian RNAi activity is reduced shortly after viral infection via poly-ADP-ribosylation of the RNA-induced...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2013.09.002
更新日期：2013-10-16 00:00:00
abstract：:The link between bacteria and host chromatin remodeling is an emerging topic. The exciting recent discoveries on bacterial impact on host epigenetics, as discussed in this Review, highlight yet another strategy used by bacterial pathogens to interfere with key cellular processes. The study of how pathogens provoke hos...
journal_title：Cell host & microbe
pub_type： 杂志文章,评审
doi：10.1016/j.chom.2008.07.009
更新日期：2008-08-14 00:00:00
abstract：:Pioneering plant research has shown that many Nod-like receptors (NLRs) detect pathogens indirectly via recognizing modifications of other host proteins. In this issue, two groups show that the RPM1 NLR is activated by phosphorylation of the host protein RIN4, probably resulting from activation of a host kinase by pat...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2011.02.002
更新日期：2011-02-17 00:00:00
abstract：:Parasites undergo complex life cycles that comprise a wide variety of cellular differentiation events in different host compartments and transmission across multiple hosts. As parasites depend on host resources, it is not surprising they have developed efficient mechanisms to sense alterations and adapt to the availab...
journal_title：Cell host & microbe
pub_type： 杂志文章,评审
doi：10.1016/j.chom.2018.05.018
更新日期：2018-06-13 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：: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：:Eliciting HIV-1-specific broadly neutralizing antibodies (bNAbs) remains a challenge for vaccine development, and the potential of passively delivered bNAbs for prophylaxis and therapeutics is being explored. We used neutralization data from four large virus panels to comprehensively map viral signatures associated wi...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2018.12.001
更新日期：2019-01-09 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：:Evolution of antibody repertoire against the Ebola virus (EBOV) proteome was characterized in an acutely infected patient receiving supportive care alone to elucidate virus-host interactions over time. Differential kinetics are observed for IgM-IgG-IgA epitope diversity, antibody binding, and affinity maturation to EB...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2020.01.001
更新日期：2020-02-12 00:00:00
abstract：:It is currently unclear at which point during viral replication that RNA genomes are first recognized as nonself by the immune system. In this issue of Cell Host & Microbe, Weber et al. show that incoming nucleocapsid-bound genomes are sufficient to bind and activate innate immune sensors. ...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2013.02.012
更新日期：2013-03-13 00:00:00
abstract：:Cure of rodent malaria with the biocide triclosan highlighted the enzyme FabI as an antimalarial drug target. In this issue of Cell Host & Microbe, Yu et al. (2008) show that FabI is not the principle target of triclosan yet plays an important role specifically in malaria liver stage development. ...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2008.11.006
更新日期：2008-12-11 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：: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
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：:Influenza A virus hemagglutinin (HA) initiates viral entry by engaging host receptor sialylated glycans via its receptor-binding site (RBS). The amino acid sequence of the RBS naturally varies across avian and human influenza virus subtypes and is also evolvable. However, functional sequence diversity in the RBS has n...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2017.05.011
更新日期：2017-06-14 00:00:00
abstract：:Tir, a translocated effector protein from enteropathogenic E. coli (EPEC), contains two phosphotyrosines that initiate cellular signaling cascades, leading to localized actin polymerization into pedestals. A recent study now shows that two additional tyrosines within Tir recruit the inositol phosphatase SHIP2 to gener...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2009.12.006
更新日期：2010-01-21 00:00:00
abstract：:Innate immune responses are characterized by precise gene expression whereby gene subsets are temporally induced to limit infection, although the mechanisms involved are incompletely understood. We show that antiviral immunity in Drosophila requires the transcriptional pausing pathway, including negative elongation fa...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2012.08.011
更新日期：2012-10-18 00:00:00
abstract：:Intracellular pathogens like Shigella flexneri enter host cells by phagocytosis. Once inside, the pathogen breaks the vacuolar membrane for cytosolic access. The fate and function of the vacuolar membrane remnants are not clear. Examining Shigella-infected nonmyeloid cells, we observed that proteins associated with va...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2009.07.005
更新日期：2009-08-20 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：:The human microbiome encodes extensive metabolic capabilities, but our understanding of the mechanisms linking gut microbes to human metabolism remains limited. Here, we focus on the conversion of cholesterol to the poorly absorbed sterol coprostanol by the gut microbiota to develop a framework for the identification ...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2020.05.013
更新日期：2020-08-12 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：:Enteropathogenic Escherichia coli (EPEC) destroys intestinal microvilli and suppresses phagocytosis by injecting effectors into infected cells through a type III secretion system (TTSS). EspB, a component of the TTSS, is also injected into the cytoplasm of host cells. However, the physiological functions of EspB withi...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2007.09.012
更新日期：2007-12-13 00:00:00
abstract：:Recent reports indicate that both the inflammasome (Wlodarska et al., 2014) and autophagy (Patel et al., 2013) pathways in goblet cells control mucin secretion, defects in which are linked to difficulties in clearing pathogenic bacteria and maintaining intestinal homeostasis and control colitis. ...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2014.02.014
更新日期：2014-03-12 00:00:00
abstract：:Vibrio cholerae is the causative agent of the diarrheal disease cholera. Although many V. cholerae virulence factors have been studied, the role of interbacterial interactions within the host gut and their influence on colonization are poorly understood. Here, we utilized the conjugative properties of a Vibrio-specifi...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2017.12.006
更新日期：2018-02-14 00:00:00
abstract：:Polysaccharide A (PSA), the archetypical immunomodulatory molecule of the gut commensal Bacteroides fragilis, induces regulatory T cells to secrete the anti-inflammatory cytokine interleukin-10 (IL-10). The cellular mediators of PSA's immunomodulatory properties are incompletely understood. In a mouse model of colitis...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2014.03.006
更新日期：2014-04-09 00:00:00
abstract：:Swine influenza A viruses (swIAVs) can play a crucial role in the generation of new human pandemic viruses. In this study, in-depth passive surveillance comprising nearly 2,500 European swine holdings and more than 18,000 individual samples identified a year-round presence of up to four major swIAV lineages on more th...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2020.07.006
更新日期：2020-10-07 00:00:00
abstract：:Viruses have evolved a remarkable array of strategies to escape the host's innate immune responses. In this issue of Cell Host & Microbe, Zhao et al. (2016b) reveal a viral strategy to inactivate RIG-I signaling that relies on deamidation of RIG-I. ...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2016.11.011
更新日期：2016-12-14 00:00:00
abstract：:Toxoplasma can reach distant organs, especially the brain, leading to a lifelong chronic phase. However, genes involved in related in vivo processes are currently unknown. Here, we use focused CRISPR libraries to identify Toxoplasma genes that affect in vivo fitness. We focus on TgWIP, whose deletion affects Toxoplasm...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2019.09.008
更新日期：2019-10-09 00:00:00
abstract：:Dietary factors, microbial composition, and metabolism are intimately intertwined into a complex network whose activities influence important intestinal functions. In a recent issue of Cell, Belcheva et al. (2014) show that microbial-derived butyrate promotes proliferation of cancer-initiated intestinal epithelial cel...
journal_title：Cell host & microbe
pub_type： 评论,杂志文章
doi：10.1016/j.chom.2014.07.011
更新日期：2014-08-13 00:00:00
abstract：:Genome degradation correlates with host adaptation and systemic disease in Salmonella. Most lineages of the S. enterica subspecies Typhimurium cause gastroenteritis in humans; however, the recently emerged ST313 lineage II pathovar commonly causes systemic bacteremia in sub-Saharan Africa. ST313 lineage II displays ge...
journal_title：Cell host & microbe
pub_type： 杂志文章
doi：10.1016/j.chom.2017.01.009
更新日期：2017-02-08 00:00:00
