Abstract:
:Epithelial reorganization involves coordinated changes in cell shapes and movements. This restructuring occurs during formation of placodes, ectodermal thickenings that initiate the morphogenesis of epithelial organs including hair, mammary gland, and tooth. Signaling pathways in ectodermal placode formation are well known, but the cellular mechanisms have remained ill defined. We established imaging methodology for live visualization of embryonic skin explants during the first wave of hair placode formation. We found that the vast majority of placodal cells were nonproliferative throughout morphogenesis. We show that cell compaction and centripetal migration are the main cellular mechanisms associated with hair placode morphogenesis and that inhibition of actin remodeling suppresses placode formation. Stimulation of both ectodysplasin/NF-κB and Wnt/β-catenin signaling increased cell motility and the number of cells committed to placodal fate. Thus, cell fate choices and morphogenetic events are controlled by the same molecular pathways, providing the framework for coordination of these two processes.
journal_name
Dev Celljournal_title
Developmental cellauthors
Ahtiainen L,Lefebvre S,Lindfors PH,Renvoisé E,Shirokova V,Vartiainen MK,Thesleff I,Mikkola MLdoi
10.1016/j.devcel.2014.02.003subject
Has Abstractpub_date
2014-03-10 00:00:00pages
588-602issue
5eissn
1534-5807issn
1878-1551pii
S1534-5807(14)00096-3journal_volume
28pub_type
杂志文章abstract::Drosophila tracheal terminal branches are plastic and have the capacity to sprout out projections toward oxygen-starved areas, in a process analogous to mammalian angiogenesis. This response involves the upregulation of FGF/Branchless in hypoxic tissues, which binds its receptor Breathless on tracheal cells. Here, we ...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2008.01.020
更新日期:2008-04-01 00:00:00
abstract::When two colonies of the tunicate Botryllus contact each other, they either fuse into a single colony or mount a destructive reaction, which keeps them apart. Which of the two reactions takes place is determined by a single, highly polymorphic fusion/histocompatibility (FuHC) locus. Recent communications report the cl...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2005.12.009
更新日期:2006-01-01 00:00:00
abstract::A central enigma in epigenetics is how epigenetic factors are guided to specific genomic sites for their function. Previously, we reported that a Piwi-piRNA complex associates with the piRNA-complementary site in the Drosophila genome and regulates its epigenetic state. Here, we report that Piwi-piRNA complexes bind t...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2013.01.023
更新日期:2013-03-11 00:00:00
abstract::Netrin-1 was recently proposed to play an important role in embryonic and pathological angiogenesis. However, data reported led to the apparently contradictory conclusions that netrin-1 is either a pro- or an antiangiogenic factor. Here, we reconcile these opposing observations by demonstrating that netrin-1 acts as a...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2009.02.006
更新日期:2009-04-01 00:00:00
abstract::Epithelial tubes are found in many vital organs and require uniform and correct tube diameters for optimal function. Tube size depends on apical membrane growth and subapical cytoskeletal reorganization, but the cues that coordinate these events to ensure functional tube shape remain elusive. We find that epithelial t...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2005.07.012
更新日期:2005-09-01 00:00:00
abstract::Tethering factors have been shown to interact with Rabs and SNAREs and, more recently, with coat proteins. Coat proteins are required for cargo selection and membrane deformation to bud a transport vesicle from a donor compartment. It was once thought that a vesicle must uncoat before it recognizes its target membrane...
journal_title:Developmental cell
pub_type: 杂志文章,评审
doi:10.1016/j.devcel.2007.04.005
更新日期:2007-05-01 00:00:00
abstract::We have used Drosophila ovarian follicle stem cells (FSCs) to study how stem cells are regulated by external signals and draw three main conclusions. First, the spatial definition of supportive niche positions for FSCs depends on gradients of Hh and JAK-STAT pathway ligands, which emanate from opposite, distant sites....
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2012.09.010
更新日期:2012-10-16 00:00:00
abstract::During early embryonic development, cells are organized as cohesive epithelial sheets that are continuously growing and remodeled without losing their integrity, giving rise to a wide array of tissue shapes. Here, using live imaging in chick embryo, we investigate how epithelial cells rearrange during gastrulation. We...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2016.01.007
更新日期:2016-02-08 00:00:00
abstract::Odorant receptors (ORs) in the olfactory epithelium bind to volatile small molecules leading to the perception of smell. ORs are expressed in many tissues but their functions are largely unknown. We show multiple ORs display distinct mRNA expression patterns during myogenesis in vitro and muscle regeneration in vivo. ...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2009.09.004
更新日期:2009-11-01 00:00:00
abstract::Cyclin E is a component of the core cell cycle machinery, and it drives cell proliferation by regulating entry and progression of cells through the DNA synthesis phase. Cyclin E expression is normally restricted to proliferating cells. However, high levels of cyclin E are expressed in the adult brain. The function of ...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2011.08.009
更新日期:2011-10-18 00:00:00
abstract::We developed a comprehensive dataset that samples the mouse transcriptome every 6 hr, from gastrulation through organogenesis. We observe an abrupt increase in overall transcript diversity at the onset of organogenesis (e8.0); the genes that comprise these changes are preferentially clustered along chromosome 7 and co...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2007.10.004
更新日期:2007-12-01 00:00:00
abstract::Phase separation represents an important form of subcellular compartmentalization. However, relatively little is known about how the formation or disassembly of such compartments is regulated. In zebrafish, the Balbiani body (Bb) and the germ plasm (Gp) are intimately linked phase-separated structures essential for ge...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2018.07.009
更新日期:2018-08-06 00:00:00
abstract::Smad4 is a central intracellular effector of TGF-beta signaling. Smad-independent TGF-beta pathways, such as those mediated by p38 MAPK, have been identified in cell culture systems, but their in vivo functional mechanisms remain unclear. In this study, we investigated the role of TGF-beta signaling in tooth and palat...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2008.06.004
更新日期:2008-08-01 00:00:00
abstract::The extracellular matrix (ECM) plays a major role in cancer progression through its increased deposition and alignment. In this issue of Developmental Cell, Fattet et al. reveal a pathway in which ECM stiffness promotes EPHA2/LYN complex activation, leading to TWIST1 nuclear localization and triggering EMT in breast c...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2020.06.032
更新日期:2020-08-10 00:00:00
abstract::Connecting phosphorylation events to kinases and phosphatases is key to understanding the molecular organization and signaling dynamics of networks. We have generated a validated set of transgenic RNA-interference reagents for knockdown and characterization of all protein kinases and phosphatases present during early ...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2014.07.027
更新日期:2014-10-13 00:00:00
abstract::The faithful alignment of homologous chromosomes during meiotic prophase requires the coordination of DNA double-strand break (DSB) repair with large-scale chromosome reorganization. Here we identify the phosphatase PP4 (Pph3/Psy2) as a mediator of this process in Saccharomyces cerevisiae. In pp4 mutants, early stages...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2010.09.006
更新日期:2010-10-19 00:00:00
abstract::Passenger proteins migrate from inner centromeres to the spindle midzone during late mitosis, and those described to date are essential both for proper chromosome segregation and for completion of cell cleavage. We have purified and cloned the human passenger protein TD-60, and we here report that it is a member of th...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/s1534-5807(03)00205-3
更新日期:2003-08-01 00:00:00
abstract::Morphological plasticity and front-rear polarity are essential for directed cell migration. In this issue of Developmental Cell, Witze et al. (2013) demonstrate that Wnt5a-mediated signaling induces localization of the cortical endoplasmic reticulum to the trailing edge of melanoma cells and mediates calcium flux, rea...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2013.09.013
更新日期:2013-09-30 00:00:00
abstract::The orientation of the mitotic spindle plays a key role in determining whether a polarized cell will divide symmetrically or asymmetrically. In most cell types, cytoplasmic dynein plays a critical role in spindle orientation. However, how dynein directs opposite spindle poles toward distinct and predetermined cell end...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2006.02.018
更新日期:2006-04-01 00:00:00
abstract::Renewing tissues have the remarkable ability to continually produce both proliferative progenitor and specialized differentiated cell types. How are complex milieus of microenvironmental signals interpreted to coordinate tissue-cell-type composition? Here, we investigate the responses of intestinal epithelium to indiv...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2020.12.020
更新日期:2021-01-15 00:00:00
abstract::Reactive oxygen species (ROS) such as hydrogen peroxide are generated at wound sites and act as long-range signals in wound healing. The roles of other ROS in wound repair are little explored. Here, we reveal a cytoprotective role for mitochondrial ROS (mtROS) in Caenorhabditis elegans skin wound healing. We show that...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2014.08.002
更新日期:2014-10-13 00:00:00
abstract::Maintaining cell fate relies on robust mechanisms that prevent the differentiation of specified cells into other cell types. This is especially critical during embryogenesis, when extensive cell proliferation, patterning, and migration events take place. Here we show that vertebrate primordial germ cells (PGCs) are pr...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2017.11.019
更新日期:2017-12-18 00:00:00
abstract::Earlier, we reported that S6K1(-/-) mice have reduced body fat mass, have elevated rates of lipolysis, have severely decreased adipocyte size, and are resistant to high fat diet (HFD)-induced obesity. Here we report that adipocytes of S6K1(-/-) mice on a HFD have the capacity to increase in size to a degree comparable...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2010.02.018
更新日期:2010-05-18 00:00:00
abstract::Morphogenesis of wavy epidermal pavement cells in plants has fascinated researchers for decades. A mechanical mechanism had been proposed in which the anticlinal cell walls, forming the in-plane cell borders, feature contiguous stiff and soft zones that generate waves upon stretching. We replicated this model as desig...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2019.05.001
更新日期:2019-07-01 00:00:00
abstract::Since the discovery of double fertilization, it has been recognized that flowering plants produce two highly dimorphic female gametes, the egg cell and central cell. These give rise, respectively, to the embryo and the endosperm, a nourishing tissue unique to flowering plants. Here we show that in Arabidopsis, endospe...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2016.03.009
更新日期:2016-04-04 00:00:00
abstract::The effect of intracellular vesicle trafficking on stem-cell behavior is largely unexplored. We screened the Drosophila sorting nexins (SNXs) and discovered that one, SH3PX1, profoundly affects gut homeostasis and lifespan. SH3PX1 restrains intestinal stem cell (ISC) division through an endocytosis-autophagy network t...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2019.03.029
更新日期:2019-05-20 00:00:00
abstract::Epithelial-mesenchymal transition (EMT) enables cells to gain migratory and invasive features underlined by major transcriptional and epigenetic reprogramming. However, most studies have focused on the endpoints of the EMT process, and the epistatic hierarchy of the transcriptional networks underlying EMT has remained...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2018.12.023
更新日期:2019-02-25 00:00:00
abstract::Hedgehog (Hh) signaling during development and in postembryonic tissues requires activation of the 7TM oncoprotein Smoothened (Smo) by mechanisms that may involve endogenous lipidic modulators. Exogenous Smo ligands previously identified include the plant sterol cyclopamine (and its therapeutically useful synthetic mi...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2013.07.015
更新日期:2013-08-26 00:00:00
abstract::Caspase proteases execute apoptosis but also function in development. In this issue of Developmental Cell, Weaver et al. report that C. elegans CED-3 caspase promotes animal growth through PMK-1/p38 kinase cleavage, and at the expense of pathogen and stress immunity, revealing an unexpected homeostatic relationship be...
journal_title:Developmental cell
pub_type: 评论,杂志文章
doi:10.1016/j.devcel.2020.04.006
更新日期:2020-05-04 00:00:00
abstract::The biogenesis of lipid droplets (LDs) and the development of adipocytes are two key aspects of mammalian fat storage. SEIPIN, an integral membrane protein of the endoplasmic reticulum (ER), plays a critical role in both LD formation and adipogenesis. The molecular function of SEIPIN, however, has yet to be elucidated...
journal_title:Developmental cell
pub_type: 杂志文章
doi:10.1016/j.devcel.2018.09.010
更新日期:2018-10-22 00:00:00