Abstract：
:Orientation of cell division is a vital aspect of tissue morphogenesis and growth. Asymmetric divisions generate cell fate diversity and epithelial stratification, whereas symmetric divisions contribute to tissue growth, spreading, and elongation. Here, we describe a mechanism for positioning the spindle in symmetric cell divisions of an embryonic epithelium. We show that during the early stages of epiboly, spindles in the epithelium display dynamic behavior within the plane of the epithelium but are kept firmly within this plane to give a symmetric division. This dynamic stability relies on balancing counteracting forces: an apically directed force exerted by F-actin/myosin-2 via active cortical flow and a basally directed force mediated by microtubules and myosin-10. When both forces are disrupted, spindle orientation deviates from the epithelial plane, and epithelial surface is reduced. We propose that this dynamic mechanism maintains symmetric divisions while allowing the quick adjustment of division plane to facilitate even tissue spreading.
journal_name
Dev Celljournal_title
Developmental cellauthors
Woolner S,Papalopulu Ndoi
10.1016/j.devcel.2012.01.002subject
Has Abstractpub_date
2012-04-17 00:00:00pages
775-87issue
4eissn
1534-5807issn
1878-1551pii
S1534-5807(12)00036-6journal_volume
22pub_type
杂志文章abstract：:In this issue of Developmental Cell, Gibson and colleagues (Ramanathan et al., 2019) investigate the relationship between size and shape in epithelial cells. They find that cell size impacts cell shape, with unexpected consequences for epithelial growth and morphogenesis, particularly the clonal dynamics of epithelial...
journal_title：Developmental cell
pub_type： 评论,杂志文章
doi：10.1016/j.devcel.2019.09.015
更新日期：2019-10-07 00:00:00
abstract：:Cell competition promotes the elimination of weaker cells from a growing population. Here we investigate how cells of Drosophila wing imaginal discs distinguish "winners" from "losers" during cell competition. Using genomic and functional assays, we have identified several factors implicated in the process, including ...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2010.05.010
更新日期：2010-06-15 00:00:00
abstract：:Lymphatic vessels are essential for tissue homeostasis and immune surveillance and contribute to pathological conditions. Lymphatic endothelium differentiates from veins and forms an independent vascular tree with only few connections to the venous circulation. Failure of blood and lymphatic vessel separation results ...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2010.01.009
更新日期：2010-03-16 00:00:00
abstract：:The dorsoventral axis of the Drosophila embryo is patterned by a gradient of bone morphogenetic protein (BMP) ligands. In a process requiring at least three additional extracellular proteins, a broad domain of weak signaling forms and then abruptly sharpens into a narrow dorsal midline peak. Using experimental and com...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2005.04.009
更新日期：2005-06-01 00:00:00
abstract：:Preventing inappropriate gene expression in time and space is as fundamental as triggering the activation of tissue- or cell-type-specific factors at the correct developmental stage and in the correct cells. Here, we study the impact of Polycomb repressive complex 2 (PRC2) function on HoxA gene regulation. We analyze ...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2019.05.021
更新日期：2019-07-22 00:00:00
abstract：:In migrating cells, Rho family GTPases and their effectors play a central role in polarizing and in organizing the actin and microtubule cytoskeletons. A study by Fukata et al. in the June 28th issue of Cell now shows that the Rac1/Cdc42 effector IQGAP1 captures microtubules by binding to CLIP170. ...
journal_title：Developmental cell
pub_type： 评论,杂志文章,评审
doi：10.1016/s1534-5807(02)00209-5
更新日期：2002-07-01 00:00:00
abstract：:While autophagy is thought to be an essential process in some cancer cells, it is unknown if or how such cancer cells can circumvent autophagy inhibition. To address this, we developed a CRISPR/Cas9 assay with dynamic live-cell imaging to measure acute effects of knockout (KO) of autophagy genes compared to known esse...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2019.07.010
更新日期：2019-09-23 00:00:00
abstract：:The protein kinase Aurora-A orchestrates key aspects of cell division, but its regulation has remained a major puzzle. That puzzle is now one step closer to being solved thanks to a recent paper by Zhao et al. appearing in the October 28(th) issue of Molecular Cell. In this work, the authors show that p21-activated ki...
journal_title：Developmental cell
pub_type： 杂志文章,评审
doi：10.1016/j.devcel.2005.10.005
更新日期：2005-11-01 00:00:00
abstract：:The development of multicellular organisms requires the precisely coordinated regulation of an evolutionarily conserved group of signaling pathways. Temporal and spatial control of these signaling cascades is achieved through networks of regulatory proteins, segregation of pathway components in specific subcellular co...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2015.07.016
更新日期：2015-09-28 00:00:00
abstract：:Centromere chromatin containing histone H3 variant CENP-A is required for accurate chromosome segregation as a foundation for kinetochore assembly. Human centromere chromatin assembles on a part of the long α-satellite (alphoid) DNA array, where it is flanked by pericentric heterochromatin. Heterochromatin spreads int...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2016.05.006
更新日期：2016-06-06 00:00:00
abstract：:Pontin and reptin are conserved AAA+ ATPases identified in chromatin-remodeling complexes. In a recent issue of Cell, Venteicher et al. provide new insight into the function of pontin and reptin in telomerase biogenesis, which is important for cellular senescence, aging, and cancer. These unexpected findings have impl...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2008.03.018
更新日期：2008-04-01 00:00:00
abstract：:During embryogenesis, melanoblasts proliferate and migrate ventrally through the developing dermis and epidermis as single cells. Targeted deletion of Rac1 in melanoblasts during embryogenesis causes defects in migration, cell-cycle progression, and cytokinesis. Rac1 null cells migrate markedly less efficiently, but s...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2011.07.008
更新日期：2011-10-18 00:00:00
abstract：:Despite their external bilateral symmetry, vertebrates have internal left/right (L/R) asymmetries required for optimal organ function. BMP-induced epithelial to mesenchymal transition (EMT) in the lateral plate mesoderm (LPM) triggers L/R asymmetric cell movements toward the midline, higher from the right, which are c...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2019.09.012
更新日期：2019-11-18 00:00:00
abstract：:Genetically identical cells in culture often exhibit significant variations, or noise, in gene expression, largely due to transcriptional bursting. Halpern et al. (2015) have developed methods to study gene bursting in tissues to find that this transcriptional bursting also occurs in the mammalian liver and may contri...
journal_title：Developmental cell
pub_type： 评论,杂志文章
doi：10.1016/j.devcel.2015.03.019
更新日期：2015-04-06 00:00:00
abstract：:While GDNF signaling through the Ret receptor is critical for kidney development, its specific role in branching morphogenesis of the epithelial ureteric bud (UB) is unclear. Ret expression defines a population of UB "tip cells" distinct from cells of the tubular "trunks," but how these cells contribute to UB growth i...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2004.11.008
更新日期：2005-01-01 00:00:00
abstract：:Wingless (Wg) is a morphogen required for the patterning of many Drosophila tissues. Several lines of evidence implicate heparan sulfate-modified proteoglycans (HSPGs) such as Dally-like protein (Dlp) in the control of Wg distribution and signaling. We show that dlp is required to limit Wg levels in the matrix, contra...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2004.08.004
更新日期：2004-10-01 00:00:00
abstract：:Developmental growth requires coordination between the growth rates of individual tissues and organs. Here, we examine how Drosophila neuromuscular synapses grow to match the size of their target muscles. We show that changes in muscle growth driven by autonomous modulation of insulin receptor signaling produce corres...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2020.05.015
更新日期：2020-07-06 00:00:00
abstract：:A remarkable feature of development is its reproducibility, the ability to correct embryo-to-embryo variations and instruct precise patterning. In Drosophila, embryonic patterning along the anterior-posterior axis is controlled by the morphogen gradient Bicoid (Bcd). In this article, we describe quantitative studies o...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2008.09.004
更新日期：2008-10-01 00:00:00
abstract：:Spindle checkpoint silencing is crucial for cell-cycle progression, but mechanisms underlying this process remain mysterious. Two papers, one in this issue of Developmental Cell (Meadows et al., 2011) and one in Current Biology (Rosenberg et al., 2011), begin to show how phosphatase PP1-gamma connects chromosome-micro...
journal_title：Developmental cell
pub_type： 评论,杂志文章
doi：10.1016/j.devcel.2011.05.017
更新日期：2011-06-14 00:00:00
abstract：:Macropinocytosis coordinates non-specific uptake of macromolecules and fluid. Cancers employ macropinocytosis to obtain nutrients to support their metabolic homeostasis. In this issue of Developmental Cell, Lee et al. (2019) report that glutamine deprivation boosts macropinocytosis via EGFR signaling induction, provid...
journal_title：Developmental cell
pub_type： 评论,杂志文章
doi：10.1016/j.devcel.2019.07.020
更新日期：2019-08-05 00:00:00
abstract：:How adherens junctions (AJs) are formed upon cell division is largely unexplored. Here, we found that AJ formation is coordinated with cytokinesis and relies on an interplay between the dividing cell and its neighbors. During contraction of the cytokinetic ring, the neighboring cells locally accumulate Myosin II and p...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2012.11.019
更新日期：2013-02-11 00:00:00
abstract：:The role of mitochondria in Drosophila programmed cell death remains unclear, although certain gene products that regulate cell death seem to be evolutionarily conserved. We find that developmental programmed cell death stimuli in vivo and multiple apoptotic stimuli ex vivo induce dramatic mitochondrial fragmentation ...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2007.02.002
更新日期：2007-05-01 00:00:00
abstract：:Multivesicular bodies (MVBs) deliver cargo destined for degradation to the vacuole or lysosome. The ESCRT (endosomal sorting complex required for transport) pathway is a key mediator of MVB biogenesis, but it also plays critical roles in retroviral budding and cytokinetic abscission. Despite these diverse roles, the E...
journal_title：Developmental cell
pub_type： 杂志文章,评审
doi：10.1016/j.devcel.2011.05.015
更新日期：2011-07-19 00:00:00
abstract：:The chemokine CXCL12 and its receptor CXCR4 have many functions during embryonic and post-natal life. We used murine models to investigate the role of CXCL12/CXCR4 signaling in cardiac development and found that embryonic Cxcl12-null hearts lacked intra-ventricular coronary arteries (CAs) and exhibited absent or mispl...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2015.03.026
更新日期：2015-05-26 00:00:00
abstract：:Stem cell differentiation involves a delicate balance of gene expression and transposon repression. In this issue of Developmental Cell, Shibata et al. (2016) show that a PIWI protein expressed in planarian stem cells is inherited by their differentiating descendants to ensure regenerative capacity of the flatworm via...
journal_title：Developmental cell
pub_type： 评论,杂志文章
doi：10.1016/j.devcel.2016.04.022
更新日期：2016-05-09 00:00:00
abstract：:The conserved Hedgehog signaling pathway is essential for embryonic development and tissue homeostasis and is tightly regulated. In this issue of Developmental Cell, Ma et al. (2016) demonstrate that sumoylation works in parallel with phosphorylation to stabilize Smoothened, antagonizing its ubiquitination and subsequ...
journal_title：Developmental cell
pub_type： 评论,杂志文章
doi：10.1016/j.devcel.2016.11.001
更新日期：2016-11-21 00:00:00
abstract：:The interchromosome domain (ICD) model proposes that genes are selectively positioned at the surfaces of chromosome territories to facilitate their regulation. A paper in the May 13 issue of the Journal of Cell Biology provides evidence that supports a reinterpretation of this model. ...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/s1534-5807(02)00196-x
更新日期：2002-06-01 00:00:00
abstract：:Plasma membrane subdomains enriched in sphingolipids, cholesterol, and signaling proteins are critical for organization of actin, membrane trafficking, and cell polarity, but the role of such domains in cytokinesis in animal cells is unknown. Here, we show that eggs form a plasma membrane domain enriched in gangliosid...
journal_title：Developmental cell
pub_type： 杂志文章
doi：10.1016/j.devcel.2005.11.002
更新日期：2005-12-01 00:00:00
abstract：:Recent studies have yielded a number of important insights into the mechanisms of hair follicle development and cycling and have highlighted the particularly important roles played by stem cells and Wnt signaling pathways. ...
journal_title：Developmental cell
pub_type： 杂志文章,评审
doi：10.1016/s1534-5807(01)00022-3
更新日期：2001-07-01 00:00:00
abstract：:A paper in the February issue of Molecular Cell describes the structure of the apoptosome, a multicomponent death machine, deciphered by cryoelectron microscopy. This structure explains the assembly of the machine, the tentative location of the subcomponents, and proposes a mechanism for initiating the death signal. ...
journal_title：Developmental cell
pub_type： 杂志文章,评审
doi：10.1016/s1534-5807(02)00137-5
更新日期：2002-03-01 00:00:00
