Abstract:
:Fear extinction is a component of cognitive flexibility that is relevant for important psychiatric diseases, but its molecular mechanism is still largely elusive. We established mice lacking the kinesin-4 motor KIF21B as a model for fear extinction defects. Postsynaptic NMDAR-dependent long-term depression (LTD) is specifically impaired in knockouts. NMDAR-mediated LTD-causing stimuli induce dynamic association of KIF21B with the Rac1GEF subunit engulfment and cell motility protein 1 (ELMO1), leading to ELMO1 translocation out of dendritic spines and its sequestration in endosomes. This process may essentially terminate transient activation of Rac1, shrink spines, facilitate AMPAR endocytosis, and reduce postsynaptic strength, thereby forming a mechanistic link to LTD expression. Antagonizing ELMO1/Dock Rac1GEF activity by the administration of 4-[3'-(2″-chlorophenyl)-2'-propen-1'-ylidene]-1-phenyl-3,5-pyrazolidinedione (CPYPP) significantly reverses the knockout phenotype. Therefore, we propose that KIF21B-mediated Rac1 inactivation is a key molecular event in NMDAR-dependent LTD expression underlying cognitive flexibility in fear extinction.
journal_name
Cell Repjournal_title
Cell reportsauthors
Morikawa M,Tanaka Y,Cho HS,Yoshihara M,Hirokawa Ndoi
10.1016/j.celrep.2018.05.089subject
Has Abstractpub_date
2018-06-26 00:00:00pages
3864-3877issue
13issn
2211-1247pii
S2211-1247(18)30870-2journal_volume
23pub_type
杂志文章相关文献
Cell Reports文献大全abstract::The polycomb repressive complex 2 (PRC2) methylates lysine 27 of histone H3 (H3K27) through its catalytic subunit Ezh2. PRC2-mediated di- and tri-methylation (H3K27me2/H3K27me3) have been interchangeably associated with gene repression. However, it remains unclear whether these two degrees of H3K27 methylation have di...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2016.09.087
更新日期:2016-10-25 00:00:00
abstract::Granule cells (GCs) of the cerebellar input layer express high-affinity δ GABAA subunit-containing GABAA receptors (δGABAARs) that respond to ambient GABA levels and context-dependent neuromodulators like steroids. We find that GC-specific deletion of δGABAA (cerebellar [cb] δ knockout [KO]) decreases tonic inhibition...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2020.108338
更新日期:2020-11-03 00:00:00
abstract::Plant glutamate receptor homologs (GLRs) have long been proposed to function as ligand-gated Ca2+ channels, but no in planta evidence has been provided. Here, we present genetic evidence that Arabidopsis GLR3.1 and GLR3.5 form Ca2+ channels activated by L-methionine (L-Met) at physiological concentrations and regulate...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2016.11.015
更新日期:2016-12-06 00:00:00
abstract::The rate at which genomes diverge during speciation is unknown, as are the physical dynamics of the process. Here, we compare full genome sequences of 32 butterflies, representing five species from a hybridizing Heliconius butterfly community, to examine genome-wide patterns of introgression and infer how divergence e...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2013.09.042
更新日期:2013-11-14 00:00:00
abstract::Transcriptome analyses have revealed that convergent gene transcription can produce many 3'-overlapping mRNAs in diverse organisms. Few studies have examined the fate of 3'-complementary mRNAs in double-stranded RNA-dependent nuclear phenomena, and nothing is known about the cytoplasmic destiny of 3'-overlapping messe...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2015.08.016
更新日期:2015-09-22 00:00:00
abstract::Investigating mechanisms that regulate endothelial cell (EC) growth and survival is important for understanding EC homeostasis and how ECs maintain stem cell niches. We report here that targeted loss of Id genes in adult ECs results in dilated, leaky sinusoids and a pro-inflammatory state that increases in severity ov...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2020.107572
更新日期:2020-04-28 00:00:00
abstract::Protein-coding genes undergo a wide array of regulatory interactions with factors that engage non-coding regions. Open reading frames (ORFs), in contrast, are thought to be constrained by coding function, precluding a major role in gene regulation. Here, we explore Piwi-interacting (pi)RNA-mediated transgene silencing...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2018.02.009
更新日期:2018-02-27 00:00:00
abstract::To understand how the Bcl6 transcriptional repressor functions in the immune system, we disrupted its RD2 repression domain in mice. Bcl6RD2(MUT) mice exhibit a complete loss of germinal center (GC) formation but retain normal extrafollicular responses. Bcl6RD2(MUT) antigen-engaged B cells migrate to the interfollicul...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2014.07.059
更新日期:2014-09-11 00:00:00
abstract::The JAK/STAT1 pathway is generally activated by cytokines, providing essential antiviral defense. Here, we identify that STAT1 activation is independent of cytokines and JAKs at the early infection stage of some viruses, including influenza A virus (IAV). Instead, STAT1 is activated mainly through spleen tyrosine kina...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2020.108627
更新日期:2021-01-19 00:00:00
abstract::BAK activation represents a key step during apoptosis, but how it converts into a mitochondria-permeabilizing pore remains unclear. By further delineating the structural rearrangements involved, we reveal that BAK activation progresses through a series of independent steps: BH3-domain exposure, N-terminal change, olig...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2013.09.010
更新日期:2013-10-31 00:00:00
abstract::Neural modulation in primate motor cortex exhibits complex patterns. We found that modulation during reaching could be separated into discrete temporal epochs. To determine if these epochs are driven by behavioral events, monkeys performed variations of a center-out reaching task. Monkeys viewed a computer cursor matc...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2019.11.069
更新日期:2019-12-17 00:00:00
abstract::Inflammatory bowel disease (IBD) is prevalent, but the mechanisms underlying disease development remain elusive. We identify a role for the E3 ubiquitin ligase RNF5 in IBD. Intestinal epithelial cells (IECs) express a high level of RNF5, while the colon of Rnf5-/- mice exhibits activated dendritic cells and intrinsic ...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2018.08.057
更新日期:2018-09-18 00:00:00
abstract::The serine/threonine protein phosphatase 5 (PP5) regulates multiple cellular signaling networks. A number of cellular factors, including heat shock protein 90 (Hsp90), promote the activation of PP5. However, it is unclear whether post-translational modifications also influence PP5 phosphatase activity. Here, we show a...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2017.10.074
更新日期:2017-11-14 00:00:00
abstract::T helper-17 (Th17) cells are associated with inflammatory disorders and cancer. We report that environmental conditions resulting in cellular stress, such as low oxygen, glucose, and isotonic stress, particularly enhance the generation of Th17 cells. Pharmacological inhibition of cell stress reduces Th17 cell differen...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2017.05.052
更新日期:2017-06-13 00:00:00
abstract::Antiangiogenic drugs are used clinically for treatment of renal cell carcinoma (RCC) as a standard first-line treatment. Nevertheless, these agents primarily serve to stabilize disease, and resistance eventually develops concomitant with progression. Here, we implicate metabolic symbiosis between tumor cells distal an...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2016.04.015
更新日期:2016-05-10 00:00:00
abstract::The function of regulatory T (Treg) cells depends on lipid oxidation. However, the molecular mechanism by which Treg cells maintain lipid metabolism after activation remains elusive. Liver kinase B1 (LKB1) acts as a coordinator by linking cellular metabolism to substrate AMP-activated protein kinase (AMPK). We show th...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2019.05.020
更新日期:2019-06-04 00:00:00
abstract::Loss of metabolic homeostasis is a hallmark of aging and is commonly characterized by the deregulation of adaptive signaling interactions that coordinate energy metabolism with dietary changes. The mechanisms driving age-related changes in these adaptive responses remain unclear. Here, we characterize the deregulation...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2013.08.004
更新日期:2013-09-26 00:00:00
abstract::The p110β isoform of PI3K is preferentially activated in many tumors deficient in the phosphatase and tensin homolog (PTEN). However, the mechanism(s) linking PTEN loss to p110β activation remain(s) mysterious. Here, we identify CRKL as a member of the class of PI3Kβ-interacting proteins. Silencing CRKL expression in ...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2017.06.054
更新日期:2017-07-18 00:00:00
abstract::The translation initiation repressor 4E-BP2 is deamidated in the brain on asparagines N99/N102 during early postnatal brain development. This post-translational modification enhances 4E-BP2 association with Raptor, a central component of mTORC1 and alters the kinetics of excitatory synaptic transmission. We show that ...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2019.11.023
更新日期:2019-12-10 00:00:00
abstract::Adipocytes deficient in fatty acid synthase (iAdFASNKO) emit signals that mimic cold exposure to enhance the appearance of thermogenic beige adipocytes in mouse inguinal white adipose tissues (iWATs). Both cold exposure and iAdFASNKO upregulate the sympathetic nerve fiber (SNF) modulator Neuregulin 4 (Nrg4), activate ...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2020.107998
更新日期:2020-08-04 00:00:00
abstract::It is known that plant cells can contain multiple distinct vacuoles; however, the abundance of multivacuolar cells and the mechanisms underlying vacuolar differentiation and communication among different types of vacuoles remain unknown. PH1 and PH5 are tonoplast P-ATPases that form a heteromeric pump that hyper-acidi...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2017.05.076
更新日期:2017-06-20 00:00:00
abstract::While the I kappa kinase (IKK) scaffolding protein NF-κB essential modulator (NEMO) binds to polyubiquitin chains to transmit inflammatory signals, NEMO itself is also ubiquitinated in response to a variety of inflammatory agonists. Although there have been hints that polyubiquitination of NEMO is essential for avoidi...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2013.06.036
更新日期:2013-07-25 00:00:00
abstract::Microbes have shown a remarkable ability in evading the killing actions of antimicrobial agents, such that treatment of bacterial infections represents once more an urgent global challenge. Understanding the initial bacterial response to antimicrobials may reveal intrinsic tolerance mechanisms to antibiotics and sugge...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2017.04.002
更新日期:2017-05-09 00:00:00
abstract::Early lineage-specific master regulators are essential for the specification of cell types. However, once cells are committed to a specific fate, it is critical to restrict the activity of such factors to enable differentiation. To date, it remains unclear how these factors are silenced. Using the Drosophila mesoderm ...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2020.108577
更新日期:2021-01-05 00:00:00
abstract::Circularization was recently recognized to broadly expand transcriptome complexity. Here, we exploit massive Drosophila total RNA-sequencing data, >5 billion paired-end reads from >100 libraries covering diverse developmental stages, tissues, and cultured cells, to rigorously annotate >2,500 fruit fly circular RNAs. T...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2014.10.062
更新日期:2014-12-11 00:00:00
abstract::Interleukin-38 (IL-38) is a cytokine of the IL-1 family with a role in chronic inflammation. However, its main cellular targets and receptors remain obscure. IL-38 is highly expressed in the skin and downregulated in psoriasis patients. We report an investigation in cellular targets of IL-38 during the progression of ...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2019.03.082
更新日期:2019-04-16 00:00:00
abstract::TRBP functions as both a Dicer cofactor and a PKR inhibitor. However, the role of TRBP in microRNA (miRNA) biogenesis is controversial and its regulation of PKR in mitosis remains unexplored. Here, we generate TRBP knockout cells and find altered Dicer-processing sites in a subset of miRNAs but no effect on Dicer stab...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2014.09.039
更新日期:2014-11-06 00:00:00
abstract::The timing of food intake and nutrient utilization is critical to health and regulated partly by the circadian clock. Increased amplitude of circadian oscillations and metabolic output has been found to improve health in diabetic and obesity mouse models. Here, we report a function for the circadian deadenylase Noctur...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2018.01.011
更新日期:2018-01-30 00:00:00
abstract::Inability to mediate fed-fast transitions in the liver is known to cause metabolic dysfunctions and diseases. Intuitively, a failure to inhibit futile translation of state-specific transcripts during fed-fast cycles would abrogate dynamic physiological transitions. Here, we have discovered hepatic fed microRNAs that t...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2019.01.087
更新日期:2019-02-19 00:00:00
abstract::The two related members of the vasohibin family, VASH1 and VASH2, encode human tubulin detyrosinases. Here we demonstrate that, in contrast to VASH1, which requires binding of small vasohibin binding protein (SVBP), VASH2 has autonomous tubulin detyrosinating activity. Moreover, we demonstrate that SVBP acts as a bona...
journal_title:Cell reports
pub_type: 杂志文章
doi:10.1016/j.celrep.2019.11.074
更新日期:2019-12-17 00:00:00