Issues
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Cover image
Cover Image
Cover: A transverse cryosection of a mouse spinal neural tube after the embryo had been treated in culture with jasplakinolide, an inhibitor of actin disassembly. An abnormally intense accumulation of actomyosin (yellow, a result of superimposed green and red fluorescence) is visible at the apical surface of the neuroepithelium. Green, myosin II heavy chain B; red, phalloidin; blue, DAPI staining of nuclei. See article by S. Escuin et al. (pp. 2468–2481).
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IN THIS ISSUE
CELL SCIENTISTS TO WATCH
COMMENTARIES
Attractive and repulsive factors act through multi-subunit receptor complexes to regulate nerve fiber growth
Summary: A review of the composition and spatio-temporal reorganization of receptor complexes for attractive and repulsive neurite growth factors, examining the implications for downstream signaling.
The role of mechanical stimuli in the vascular differentiation of mesenchymal stem cells
Summary: In this review, the main findings about the impact of mechanical forces (shear stress and cyclic strain) on the differentiation of mesenchymal stem cells into vascular cells are presented.
SHORT REPORTS
Alternative routes to the cell surface underpin insulin-regulated membrane trafficking of GLUT4
Summary: Cellugyrin-containing internal GLUT4-containing vesicles provide an insulin-sensitive reservoir to replenish GLUT4 storage vesicles following insulin-stimulated exocytosis of GLUT4.
WNT/β-catenin signaling inhibits CBP-mediated RelA acetylation and expression of proinflammatory NF-κB target genes
Summary: This paper provides evidence that WNT/β-catenin signaling selectively inhibits the expression of a subset of NF-κB-dependent proinflammatory target genes by inhibiting RelA K314 acetylation by CBP.
The Drosophila centriole – conversion of doublets into triplets within the stem cell niche
Highlighted Article: In Drosophila, the old mother centriole that stays in the apical cytoplasm of the male germline stem cells is composed of triplets, whereas its daughter is always built from mixed doublets and triplets.
RESEARCH ARTICLES
Apoptotic-cell-derived membrane microparticles and IFN-α induce an inflammatory immune response
Summary: High levels of IFN-α and apoptotic microparticles lead to a pro-inflammatory environment through the synergistic increase of phosphorylated STAT1 when acting upon professional phagocytes.
Sphingolipids regulate telomere clustering by affecting the transcription of genes involved in telomere homeostasis
Summary: Sphingolipids regulate telomere clustering by affecting the transcription of genes involved in telomere homeostasis in yeast.
Rho-kinase-dependent actin turnover and actomyosin disassembly are necessary for mouse spinal neural tube closure
Summary: Actomyosin assembly and myosin ATPase activity are not essential for mouse spinal neurulation. However, the ROCK–LIMK–cofilin pathway, which controls actin turnover and actomyosin disassembly, is necessary.
Control of Cdc6 accumulation by Cdk1 and MAPK is essential for completion of oocyte meiotic divisions in Xenopus
Summary: During oocyte meiotic maturation, Cdc6 accumulation is tightly coordinated with entry into meiosis II to avoid the direct inhibition of Cdk1 activity and, thus, unscheduled DNA replication.
TORC2 mediates the heat stress response in Drosophila by promoting the formation of stress granules
Highlighted Article: The Drosophila TOR complex 2 is necessary for the formation of heat-induced cytoprotective stress granules, which can explain the heat sensitivity of TORC2 mutant flies.
Akt signaling dynamics in individual cells
Summary: Description of a simple and dynamic measure of Akt signaling activity in living cells that will provide new insights into how Akt regulates its biological responses.
ESCRTs regulate amyloid precursor protein sorting in multivesicular bodies and intracellular amyloid-β accumulation
Highlighted Article: The early ESCRT machinery has a dual role in limiting intracellular Aβ accumulation through targeting of APP and its processing products to lysosomes for degradation, and promoting Aβ secretion.
Association of intracellular and synaptic organization in cochlear inner hair cells revealed by 3D electron microscopy
Summary: 3D electron microscopy reconstructs the highly organised structure of the infranuclear region of the cochlear inner hair cell, which supports synaptic functions.
The small GTPase Rab8 interacts with VAMP-3 to regulate the delivery of recycling T-cell receptors to the immune synapse
Highlighted Article: The ciliary regulator Rab8 is co-opted by T-cells during the assembly of the immune synapse to promote the VAMP-3-dependent step of polarized T-cell receptor recycling.
A family of ROP proteins that suppresses actin dynamics, and is essential for polarized growth and cell adhesion
Highlighted Article: Loss-of-function studies in the moss Physcomitrella patens demonstrate that the ROP-family of proteins is crucial for cell adhesion and polarized growth.
CORRECTION
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