Abstract:
:Spinal muscular atrophy (SMA) is a lethal human disease characterized by motor neuron dysfunction and muscle deterioration due to depletion of the ubiquitous survival motor neuron (SMN) protein. Drosophila SMN mutants have reduced muscle size and defective locomotion, motor rhythm, and motor neuron neurotransmission. Unexpectedly, restoration of SMN in either muscles or motor neurons did not alter these phenotypes. Instead, SMN must be expressed in proprioceptive neurons and interneurons in the motor circuit to nonautonomously correct defects in motor neurons and muscles. SMN depletion disrupts the motor system subsequent to circuit development and can be mimicked by the inhibition of motor network function. Furthermore, increasing motor circuit excitability by genetic or pharmacological inhibition of K(+) channels can correct SMN-dependent phenotypes. These results establish sensory-motor circuit dysfunction as the origin of motor system deficits in this SMA model and suggest that enhancement of motor neural network activity could ameliorate the disease.
journal_name
Celljournal_title
Cellauthors
Imlach WL,Beck ES,Choi BJ,Lotti F,Pellizzoni L,McCabe BDdoi
10.1016/j.cell.2012.09.011subject
Has Abstractpub_date
2012-10-12 00:00:00pages
427-39issue
2eissn
0092-8674issn
1097-4172pii
S0092-8674(12)01114-2journal_volume
151pub_type
杂志文章相关文献
CELL文献大全abstract::Investigating the family tree of a tumor to identify its cellular origins is a daunting task. Liu et al. (2011) now use an elegant lineage tracing technique (MADM) to visualize glioma from its earliest stages. They show that mutations originally induced in neural stem cells lie dormant and only trigger malignant trans...
journal_title:Cell
pub_type: 评论,杂志文章
doi:10.1016/j.cell.2011.06.047
更新日期:2011-07-22 00:00:00
abstract::Neurons in cortical circuits are often coactivated as ensembles, yet it is unclear whether ensembles play a functional role in behavior. Some ensemble neurons have pattern completion properties, triggering the entire ensemble when activated. Using two-photon holographic optogenetics in mouse primary visual cortex, we ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2019.05.045
更新日期:2019-07-11 00:00:00
abstract::xol-1 is the earliest-acting gene in the known hierarchy that controls C. elegans sex determination and dosage compensation. We show that the primary sex-determining signal (the X/A ratio) directs the choice of sexual fate by regulating xol-1 transcript levels: high xol-1 expression during gastrulation triggers male d...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(95)90452-2
更新日期:1995-01-13 00:00:00
abstract::We have characterized regulation of a complex Chlamydomonas reinhardtii chloroplast (PA) whose activity is stimulated by the DNA gyrase inhibitor novobiocin, both in the alga itself and in a heterologous Escherichia coli plasmid system. Since novobiocin is known to reduce torsional stress in E. coli DNA, we interpret ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(87)90431-4
更新日期:1987-01-30 00:00:00
abstract::Trypanosoma brucei expresses variant surface glycoprotein (VSG) genes in a strictly monoallelic fashion in its mammalian hosts, but it is unclear how this important virulence mechanism is enforced. Telomere position effect, an epigenetic phenomenon, has been proposed to play a critical role in VSG regulation, yet no t...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2009.01.037
更新日期:2009-04-03 00:00:00
abstract::VopL is an effector protein from Vibrio parahaemolyticus that nucleates actin filaments. VopL consists of a VopL C-terminal domain (VCD) and an array of three WASP homology 2 (WH2) motifs. Here, we report the crystal structure of the VCD dimer bound to actin. The VCD organizes three actin monomers in a spatial arrange...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2013.09.019
更新日期:2013-10-10 00:00:00
abstract::During development, neurons switch among growth states, such as initial axon outgrowth, axon pruning, and regrowth. By studying the stereotypic remodeling of the Drosophila mushroom body (MB), we found that the heme-binding nuclear receptor E75 is dispensable for initial axon outgrowth of MB γ neurons but is required ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2015.11.047
更新日期:2016-01-14 00:00:00
abstract::The exchange of metabolites between the mitochondrial matrix and the cytosol depends on β-barrel channels in the outer membrane and α-helical carrier proteins in the inner membrane. The essential translocase of the inner membrane (TIM) chaperones escort these proteins through the intermembrane space, but the structura...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2018.10.039
更新日期:2018-11-15 00:00:00
abstract::From a transplantable mouse teratoma it has been possible to derive an established keratinizing cell line (XB) which grows well in cultures containing lethally irradiated 3T3 fibroblasts at the correct density. Single cells of the keratinizing line grow into colonies each consisting of a stratified squamous epithelium...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(75)90183-x
更新日期:1975-11-01 00:00:00
abstract::The transforming protein of Rous sarcoma virus (pp60v-src) and its normal cellular homolog (pp60c-src) are demonstrated to be phosphorylated at serine 12 in vivo under certain conditions. We propose that protein kinase C is responsible for this modification based on the following evidence. First, the tumor promoters, ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(85)90281-8
更新日期:1985-10-01 00:00:00
abstract::ABCA1, an ATP-binding cassette (ABC) subfamily A exporter, mediates the cellular efflux of phospholipids and cholesterol to the extracellular acceptor apolipoprotein A-I (apoA-I) for generation of nascent high-density lipoprotein (HDL). Mutations of human ABCA1 are associated with Tangier disease and familial HDL defi...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2017.05.020
更新日期:2017-06-15 00:00:00
abstract::Evasion of DNA damage-induced cell death, via mutation of the p53 tumor suppressor or overexpression of prosurvival Bcl-2 family proteins, is a key step toward malignant transformation and therapeutic resistance. We report that depletion or acute inhibition of checkpoint kinase 1 (Chk1) is sufficient to restore gamma-...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2008.03.037
更新日期:2008-05-30 00:00:00
abstract::A key aspect of genomic medicine is to make individualized clinical decisions from personal genomes. We developed a machine-learning framework to integrate personal genomes and electronic health record (EHR) data and used this framework to study abdominal aortic aneurysm (AAA), a prevalent irreversible cardiovascular ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2018.07.021
更新日期:2018-09-06 00:00:00
abstract::Eukaryotic Argonaute proteins strictly mediate RNA-guided RNA interference. In contrast, prokaryotic Argonautes can utilize DNA guides to target complementary DNA sequences to protect their hosts against invading DNA. In this issue of Cell, Jolly and colleagues demonstrate that Thermus thermophilus Argonaute additiona...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2020.08.037
更新日期:2020-09-17 00:00:00
abstract::Using a cloned cDNA complementary to a portion of the mRNA for the 50 kd human epidermal keratin, we have screened a human genomic library and have isolated and sequenced the gene encoding this keratin. A comparison of the keratin gene with the very distantly related vimentin gene has enabled us to explore the relatio...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(84)90456-2
更新日期:1984-12-01 00:00:00
abstract::H2S is an endogenous gasotransmitter that plays an important role in physiological conditions. In this issue, Das et al. provide evidence that SIRT1-dependent angiogenesis is augmented by H2S-findings reinforced by Longchamp et al., who demonstrate that H2S-dependent angiogenesis is triggered by amino acid deprivation...
journal_title:Cell
pub_type: 评论,杂志文章
doi:10.1016/j.cell.2018.03.011
更新日期:2018-03-22 00:00:00
abstract::Spatial organization of cellular proteins plays an important role in establishment of cellular polarity to regulate cell division, differentiation, migration, and organogenesis. Activation of T cells by antigen-presenting cells (APCs) results in the formation of an immunological synapse (IS), assembly of a signaling s...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2008.01.013
更新日期:2008-03-07 00:00:00
abstract::p120-catenin regulates cell-cell adhesion by controlling cell surface retention of cadherin. In this issue, Ishiyama et al. (2010) present the first crystal structure of p120 in complex with cadherin, revealing molecular details of the functional interface and providing sophisticated new tools for dissecting p120's ro...
journal_title:Cell
pub_type: 评论,杂志文章
doi:10.1016/j.cell.2010.03.022
更新日期:2010-04-02 00:00:00
abstract::A family of proteins was shown to bind cooperatively with TFIID to core promoters, as previously demonstrated for the general initiation factor TFIIA. These factors form distinct complexes with TFIID, fail to bind DNA in the absence of TFIID, differ chromatographically from TFIIA, and compete with TFIIA for binding to...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/0092-8674(91)90530-c
更新日期:1991-11-01 00:00:00
abstract::Two papers published in 1984 by the Varshavsky laboratory revealed that the ubiquitin/proteasome pathway is the principal system for degradation of short-lived proteins in mammalian cells, setting the stage for future demonstrations of this pathway's many regulatory roles. This perspective discusses the impact of thos...
journal_title:Cell
pub_type: 评论,杂志文章,评审
doi:10.1016/s0092-8674(03)01074-2
更新日期:2004-01-23 00:00:00
abstract::Morphogen gradients control body pattern by differentially regulating cellular behavior. Here, we analyze the molecular events underlying the primary response to the Dpp/BMP morphogen in Drosophila. Throughout development, Dpp transduction causes the graded transcriptional downregulation of the brinker (brk) gene. We ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/s0092-8674(03)00241-1
更新日期:2003-04-18 00:00:00
abstract::Models of transcription are often built around a picture of RNA polymerase and transcription factors (TFs) acting on a single copy of a promoter. However, most TFs are shared between multiple genes with varying binding affinities. Beyond that, genes often exist at high copy number-in multiple identical copies on the c...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2014.02.022
更新日期:2014-03-13 00:00:00
abstract::AMPA-type glutamate receptors (AMPA-Rs) mediate a majority of excitatory synaptic transmission in the brain. In hippocampus, most AMPA-Rs are hetero-oligomers composed of GluR1/GluR2 or GluR2/GluR3 subunits. Here we show that these AMPA-R forms display different synaptic delivery mechanisms. GluR1/GluR2 receptors are ...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/s0092-8674(01)00321-x
更新日期:2001-05-04 00:00:00
abstract::Spinocerebellar ataxia type 1 (SCA1) is one of nine inherited, typically adult onset, polyglutamine neurodegenerative diseases. To examine whether development impacts SCA1, we used a conditional transgenic mouse model of SCA1 to delay the postnatal expression of mutant ATXN1 until after completion of cerebellar develo...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2006.09.036
更新日期:2006-11-17 00:00:00
abstract::We have identified a nuclear pathway that rapidly degrades unspliced pre-mRNAs in yeast. This involves 3'-->5' degradation by the exosome complex and 5'-->3' degradation by the exonuclease Rat1p. 3'-->5' degradation is normally the major pathway and is regulated in response to carbon source. Inhibition of pre-mRNA deg...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/s0092-8674(00)00065-9
更新日期:2000-09-15 00:00:00
abstract::Three membrane microdomains can be identified on docked vacuoles: "outside" membrane, not in contact with other vacuoles, "boundary" membrane that contacts adjacent vacuoles, and "vertices," where boundary and outside membrane meet. In living cells and in vitro, vacuole fusion occurs at vertices rather than from a cen...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/s0092-8674(02)00632-3
更新日期:2002-02-08 00:00:00
abstract::We present genetic evidence that integrins regulate epithelial-mesenchymal interactions during organogenesis. Mice with a mutation in the alpha8 gene do not express the integrin alpha8 beta1 and exhibit profound deficits in kidney morphogenesis. In wild-type animals, inductive interactions between the ureteric epithel...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/s0092-8674(00)81903-0
更新日期:1997-03-07 00:00:00
abstract::The distribution of sense and antisense strand DNA mutations on transcribed duplex DNA contributes to the development of immune and neural systems along with the progression of cancer. Because developmentally matured B cells undergo biologically programmed strand-specific DNA mutagenesis at focal DNA/RNA hybrid struct...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2017.03.043
更新日期:2017-04-20 00:00:00
abstract::In dividing cells, nuclear pore complexes (NPCs) disassemble during mitosis and reassemble into the newly forming nuclei. However, the fate of nuclear pores in postmitotic cells is unknown. Here, we show that NPCs, unlike other nuclear structures, do not turn over in differentiated cells. While a subset of NPC compone...
journal_title:Cell
pub_type: 杂志文章
doi:10.1016/j.cell.2008.11.037
更新日期:2009-01-23 00:00:00
abstract::We report genome-wide DNA data for 73 individuals from five archaeological sites across the Bronze and Iron Ages Southern Levant. These individuals, who share the "Canaanite" material culture, can be modeled as descending from two sources: (1) earlier local Neolithic populations and (2) populations related to the Chal...
journal_title:Cell
pub_type: 历史文章,杂志文章
doi:10.1016/j.cell.2020.04.024
更新日期:2020-05-28 00:00:00