Abstract:
:In Drosophila gonads, Piwi proteins and associated piRNAs collaborate with additional factors to form a small RNA-based immune system that silences mobile elements. Here, we analyzed nine Drosophila piRNA pathway mutants for their impacts on both small RNA populations and the subcellular localization patterns of Piwi proteins. We find that distinct piRNA pathways with differing components function in ovarian germ and somatic cells. In the soma, Piwi acts singularly with the conserved flamenco piRNA cluster to enforce silencing of retroviral elements that may propagate by infecting neighboring germ cells. In the germline, silencing programs encoded within piRNA clusters are optimized via a slicer-dependent amplification loop to suppress a broad spectrum of elements. The classes of transposons targeted by germline and somatic piRNA clusters, though not the precise elements, are conserved among Drosophilids, demonstrating that the architecture of piRNA clusters has coevolved with the transposons that they are tasked to control.
journal_name
Celljournal_title
Cellauthors
Malone CD,Brennecke J,Dus M,Stark A,McCombie WR,Sachidanandam R,Hannon GJdoi
10.1016/j.cell.2009.03.040subject
Has Abstractpub_date
2009-05-01 00:00:00pages
522-35issue
3eissn
0092-8674issn
1097-4172pii
S0092-8674(09)00377-8journal_volume
137pub_type
杂志文章相关文献
CELL文献大全abstract::Cadherins are a group of homophilic intercellular adhesion molecules; each member of this family exhibits binding specificity. Here, we attempted to map the sites for the specificities of these molecules by analyzing adhesives selectivities of the cells that express chimeric and point-mutated E- and P-cadherin. The re...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(90)90222-z
更新日期:1990-04-06 00:00:00
abstract::An important signaling pathway to the actin cytoskeleton links the Rho family GTPase Cdc42 to the actin-nucleating Arp2/3 complex through N-WASP. Nevertheless, these previously identified components are not sufficient to mediate Cdc42-induced actin polymerization in a physiological context. In this paper, we describe ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2004.06.027
更新日期:2004-07-23 00:00:00
abstract::The transmembrane ligand ephrinB2 and its cognate Eph receptor tyrosine kinases are important regulators of vascular morphogenesis. EphrinB2 may have an active signaling role, resulting in bi-directional signal transduction downstream of both ephrinB2 and Eph receptors. To separate the ligand and receptor-like functio...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/s0092-8674(01)00191-x
更新日期:2001-01-12 00:00:00
abstract::Recent work has identified a mouse gene (tsg101) whose inactivation in fibroblasts results in cellular transformation and the ability to produce metastatic tumors in nude mice. Here, we report that the human homolog, TSG101, which we isolated and mapped to chromosome 11, bands 15.1-15.2, a region proposed to contain t...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/s0092-8674(00)81866-8
更新日期:1997-01-10 00:00:00
abstract::During the SOS response, LexA repressor is inactivated by specific cleavage. Although cleavage requires RecA protein in vivo, RecA acts indirectly as a coprotease by stimulating an inherent self-cleavage activity of LexA. In lambda lysogens, cleavage of lambda Cl repressor in a similar but far slower reaction results ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(93)90645-7
更新日期:1993-06-18 00:00:00
abstract::Tumor suppressors block the development of cancer and are often lost during tumor development. Papa et al. show that partial loss of normal PTEN tumor suppressor function can be compounded by additional disruption caused by the expression of inactive mutant PTEN protein. This has significant implications for patients ...
journal_title:Cell
pub_type: 评论,杂志文章
doi:10.1016/j.cell.2014.04.008
更新日期:2014-04-24 00:00:00
abstract::The lateral hypothalamic (LH) projection to the ventral tegmental area (VTA) has been linked to reward processing, but the computations within the LH-VTA loop that give rise to specific aspects of behavior have been difficult to isolate. We show that LH-VTA neurons encode the learned action of seeking a reward, indepe...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2015.01.003
更新日期:2015-01-29 00:00:00
abstract::In this issue of Cell, Uderhardt et al. employed intravital two-photon microscopy to examine tissue-resident macrophage responses to sterile cellular injuries of variable size. They observed that while multi-cell "macrolesions" are characteristically pro-inflammatory, resident macrophages can "cloak" single-cell micro...
journal_title:Cell
pub_type: 评论,杂志文章
doi:10.1016/j.cell.2019.03.042
更新日期:2019-04-18 00:00:00
abstract::Pulmonary neuroendocrine (NE) cells are neurosensory cells sparsely distributed throughout the bronchial epithelium, many in innervated clusters of 20-30 cells. Following lung injury, NE cells proliferate and generate other cell types to promote epithelial repair. Here, we show that only rare NE cells, typically 2-4 p...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2019.09.010
更新日期:2019-10-03 00:00:00
abstract::We have used cloned chicken cDNA sequences for alpha- and beta-tubulin to investigate tubulin gene organization in Drosophila melanogaster. Experiments using genomic Drosophila DNA from several sources indicate that there are at least four copies each of the alpha-tubulin gene and the beta-tubulin gene. In situ hybrid...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(80)90561-9
更新日期:1980-12-01 00:00:00
abstract::Two allelic forms of the natural chicken ovalbumin gene have been independently cloned. These alleles differ from each other by an Eco RI restriction cleavage site in one of the seven intervening sequences within the natural ovalbumin gene. Restriction endonuclease mapping and sequence analyses of these cloned genotyp...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(79)90201-0
更新日期:1979-01-01 00:00:00
abstract::The alpha IIb beta 3 integrin binds Arg-Gly-Asp-containing (RGD-containing) ligands in a cation-dependent interaction. A fourteen amino acid sequence, beta 3 (118-131), and an antibody to it, inhibited ligand binding functions of alpha IIb beta 3, and a 1:1 stoichiometric beta 3 (118-131)-RGD complex was detected by m...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(94)90551-7
更新日期:1994-11-18 00:00:00
abstract::Recombinant DNA techniques have been used to isolate the integrated viral DNA, together with flanking cellular sequences, from three independently isolated lines of SV40-transformed BALB/c 3T3 cells. We have determined the structures of these cloned segments and their relationships to one another by restriction enzyme...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(81)90073-8
更新日期:1981-08-01 00:00:00
abstract::Properties of human anticentromere autoantibodies were analyzed. In intact cells or isolated cell fractions, these sera stain the centromeres of mitotic chromosomes and discrete speckles (prekinetochores) in nuclei. Staining is also retained in matrix preparations from nuclei or chromosomes. Immunoprecipitation or imm...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(83)90236-2
更新日期:1983-11-01 00:00:00
abstract::Synaptic plasticity in response to changes in physiologic state is coordinated by hormonal signals across multiple neuronal cell types. Here, we combine cell-type-specific electrophysiological, pharmacological, and optogenetic techniques to dissect neural circuits and molecular pathways controlling synaptic plasticity...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2011.07.039
更新日期:2011-09-16 00:00:00
abstract::We have reconstituted the fusion and assembly of vesiculated Golgi membranes (VGMs) into functionally active stacks of cisternae. A kinetic analysis of this assembly process revealed that highly dispersed VGMs of 60-90 nm diameter first fuse to form larger vesicles of 200-300 nm diameter that are clustered together. T...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(95)90269-4
更新日期:1995-09-22 00:00:00
abstract::We have constructed an actin-HIS4 gene fusion, such that expression of HIS4 requires proper splicing of the actin intron. Using this chimeric gene in an in vivo screen for splicing mutations, we have isolated a G to A transition in the fifth position of the yeast 5' consensus sequence/GTAPyGT. This mutation still allo...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(85)90065-0
更新日期:1985-05-01 00:00:00
abstract::Targeted gene regulation on a genome-wide scale is a powerful strategy for interrogating, perturbing, and engineering cellular systems. Here, we develop a method for controlling gene expression based on Cas9, an RNA-guided DNA endonuclease from a type II CRISPR system. We show that a catalytically dead Cas9 lacking en...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2013.02.022
更新日期:2013-02-28 00:00:00
abstract::Dysfunction and loss of insulin-producing pancreatic beta cells represent hallmarks of diabetes mellitus. Here, we show that mice lacking the mitogen-activated protein kinase (MAPK) p38delta display improved glucose tolerance due to enhanced insulin secretion from pancreatic beta cells. Deletion of p38delta results in...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2008.11.018
更新日期:2009-01-23 00:00:00
abstract::Endoplasmic reticulum (ER) membrane contact sites (MCSs) mark positions where endosomes undergo fission for cargo sorting. To define the role of ER at this unique MCS, we targeted a promiscuous biotin ligase to cargo-sorting domains on endosome buds. This strategy identified the ER membrane protein TMCC1, a member of ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2018.08.030
更新日期:2018-09-20 00:00:00
abstract::Chemotherapy results in a frequent yet poorly understood syndrome of long-term neurological deficits. Neural precursor cell dysfunction and white matter dysfunction are thought to contribute to this debilitating syndrome. Here, we demonstrate persistent depletion of oligodendrocyte lineage cells in humans who received...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2018.10.049
更新日期:2019-01-10 00:00:00
abstract::The trk tyrosine kinase proto-oncogene product gp140prototrk binds nerve growth factor (NGF) and is rapidly and selectively activated by this neurotrophic factor. To determine whether gp140prototrk is involved in transducing a functional NGF signal, PC12 cell mutants (PC12nnr) deficient in high affinity NGF binding an...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(91)90441-z
更新日期:1991-09-06 00:00:00
abstract::Atopic dermatitis (AD) is a chronic itch and inflammatory disorder of the skin that affects one in ten people. Patients suffering from severe AD eventually progress to develop asthma and allergic rhinitis, in a process known as the "atopic march." Signaling between epithelial cells and innate immune cells via the cyto...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2013.08.057
更新日期:2013-10-10 00:00:00
abstract::Although specific microRNAs (miRNAs) can be upregulated in cancer, global miRNA downregulation is a common trait of human malignancies. The mechanisms of this phenomenon and the advantages it affords remain poorly understood. Here we identify a microRNA family, miR-103/107, that attenuates miRNA biosynthesis by target...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2010.05.017
更新日期:2010-06-25 00:00:00
abstract::Defects in the gene encoding the endothelin-B receptor produce aganglionic megacolon and pigmentary disorders in mice and humans. We report that a targeted disruption of the mouse endothelin-3 ligand (EDN3) gene produces a similar recessive phenotype of megacolon and coat color spotting. A natural recessive mutation t...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(94)90018-3
更新日期:1994-12-30 00:00:00
abstract::ARF GTPases act at multiple steps of the secretory and vacuolar/lysosomal trafficking pathways, but little is known about the spatial regulation of ARF activation. In this issue of Cell, Geldner et al. demonstrate that the Arabidopsis ARF activator GNOM localizes to endosomes where it controls the polarized traffickin...
journal_title:Cell
pub_type: 评论,杂志文章
doi:10.1016/s0092-8674(03)00038-2
更新日期:2003-01-24 00:00:00
abstract::Sleep is characterized by behavioral quiescence, homeostasis, increased arousal threshold, and rapid reversibility. Understanding how these properties are encoded by a neuronal circuit has been difficult, and no single molecular or neuronal pathway has been shown to be responsible for the regulation of sleep. Taking a...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2013.11.036
更新日期:2014-01-16 00:00:00
abstract::Subsets of CD4 T cells are defined by the cytokines that they produce; these cytokines determine the effector function of these cells. Cloned CD4 T cells fall into two subsets, producing either interferon-gamma (IFN gamma) or interleukin-4 (IL-4) in combination with other cytokines, and are called Th1 and Th2 cells, r...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(93)90542-x
更新日期:1993-12-03 00:00:00
abstract::Repair of DNA double-strand breaks (DSBs) by non-homologous end joining is critical for neural development, and brain cells frequently contain somatic genomic variations that might involve DSB intermediates. We now use an unbiased, high-throughput approach to identify genomic regions harboring recurrent DSBs in primar...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2015.12.039
更新日期:2016-02-11 00:00:00
abstract::In this issue of Cell, discover gene-specific translational silencing as a novel function of the fused glutamyl- and prolyl-tRNA synthetase (GluProRS). GluProRS is released from a multisynthetase translation complex in response to gamma-interferon and forms a four-protein GAIT complex that silences translation of ceru...
journal_title:Cell
pub_type: 评论,杂志文章
doi:10.1016/j.cell.2004.10.001
更新日期:2004-10-15 00:00:00