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  1. Article ; Online: Asymmetric cell division in the Drosophila bristle lineage: from the polarization of sensory organ precursor cells to Notch-mediated binary fate decision.

    Schweisguth, François

    Wiley interdisciplinary reviews. Developmental biology

    2015  Volume 4, Issue 3, Page(s) 299–309

    Abstract: Asymmetric cell division (ACD) is a simple and evolutionary conserved process whereby a mother divides to generate two daughter cells with distinct developmental potentials. This process can generate cell fate diversity during development. Fate asymmetry ...

    Abstract Asymmetric cell division (ACD) is a simple and evolutionary conserved process whereby a mother divides to generate two daughter cells with distinct developmental potentials. This process can generate cell fate diversity during development. Fate asymmetry may result from the unequal segregation of molecules and/or organelles between the two daughter cells. Here, I will review how fate asymmetry is regulated in the sensory bristle lineage in Drosophila and focus on the molecular mechanisms underlying ACD of the sensory organ precursor cells (SOPs). For further resources related to this article, please visit the WIREs website.
    MeSH term(s) Animals ; Asymmetric Cell Division/physiology ; Cell Differentiation/physiology ; Cell Lineage/physiology ; Cell Polarity/physiology ; Drosophila/growth & development ; Drosophila Proteins/metabolism ; Endocytosis/physiology ; Intracellular Signaling Peptides and Proteins/metabolism ; Juvenile Hormones/metabolism ; Membrane Proteins/metabolism ; Models, Biological ; Neural Stem Cells/physiology ; Receptors, Notch/metabolism ; Sense Organs/cytology ; Sense Organs/growth & development ; Spindle Apparatus/metabolism ; Ubiquitin-Protein Ligases/metabolism
    Chemical Substances Drosophila Proteins ; Intracellular Signaling Peptides and Proteins ; Juvenile Hormones ; Membrane Proteins ; Receptors, Notch ; delta protein ; numb protein, Drosophila ; Ubiquitin-Protein Ligases (EC 2.3.2.27) ; neur protein, Drosophila (EC 2.3.2.27)
    Language English
    Publishing date 2015-05
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1759-7692
    ISSN (online) 1759-7692
    DOI 10.1002/wdev.175
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Self-Organization in Pattern Formation.

    Schweisguth, François / Corson, Francis

    Developmental cell

    2019  Volume 49, Issue 5, Page(s) 659–677

    Abstract: Self-organization is pervasive in development, from symmetry breaking in the early embryo to tissue patterning and morphogenesis. For a few model systems, the underlying molecular and cellular processes are now sufficiently characterized that ... ...

    Abstract Self-organization is pervasive in development, from symmetry breaking in the early embryo to tissue patterning and morphogenesis. For a few model systems, the underlying molecular and cellular processes are now sufficiently characterized that mathematical models can be confronted with experiments, to explore the dynamics of pattern formation. Here, we review selected systems, ranging from cyanobacteria to mammals, where different forms of cell-cell communication, acting alone or together with positional cues, drive the patterning of cell fates, highlighting the insights that even very simple models can provide as well as the challenges on the path to a predictive understanding of development.
    MeSH term(s) Animals ; Body Patterning ; Cell Communication ; Cell Differentiation ; Mammals ; Models, Biological ; Morphogenesis
    Language English
    Publishing date 2019-06-19
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2054967-2
    ISSN 1878-1551 ; 1534-5807
    ISSN (online) 1878-1551
    ISSN 1534-5807
    DOI 10.1016/j.devcel.2019.05.019
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Mechanisms of Notch signaling: a simple logic deployed in time and space.

    Henrique, Domingos / Schweisguth, François

    Development (Cambridge, England)

    2019  Volume 146, Issue 3

    Abstract: Most cells in our body communicate during development and throughout life via Notch receptors and their ligands. Notch receptors relay information from the cell surface to the genome via a very simple mechanism, yet Notch plays multiple roles in ... ...

    Abstract Most cells in our body communicate during development and throughout life via Notch receptors and their ligands. Notch receptors relay information from the cell surface to the genome via a very simple mechanism, yet Notch plays multiple roles in development and disease. Recent studies suggest that this versatility in Notch function may not necessarily arise from complex and context-dependent integration of Notch signaling with other developmental signals, but instead arises, in part, from signaling dynamics. Here, we review recent findings on the core Notch signaling mechanism and discuss how spatial-temporal dynamics contribute to Notch signaling output.
    MeSH term(s) Animals ; Humans ; Receptors, Notch/genetics ; Receptors, Notch/metabolism ; Signal Transduction
    Chemical Substances Receptors, Notch
    Language English
    Publishing date 2019-02-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 90607-4
    ISSN 1477-9129 ; 0950-1991
    ISSN (online) 1477-9129
    ISSN 0950-1991
    DOI 10.1242/dev.172148
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Tissue-wide coordination of epithelium-to-neural stem cell transition in the Drosophila optic lobe requires Neuralized.

    Shard, Chloé / Luna-Escalante, Juan / Schweisguth, François

    The Journal of cell biology

    2021  Volume 219, Issue 11

    Abstract: Many tissues are produced by specialized progenitor cells emanating from epithelia via epithelial-to-mesenchymal transition (EMT). Most studies have so far focused on EMT involving single or isolated groups of cells. Here we describe an EMT-like process ... ...

    Abstract Many tissues are produced by specialized progenitor cells emanating from epithelia via epithelial-to-mesenchymal transition (EMT). Most studies have so far focused on EMT involving single or isolated groups of cells. Here we describe an EMT-like process that requires tissue-level coordination. This EMT-like process occurs along a continuous front in the Drosophila optic lobe neuroepithelium to produce neural stem cells (NSCs). We find that emerging NSCs remain epithelial and apically constrict before dividing asymmetrically to produce neurons. Apical constriction is associated with contractile myosin pulses and involves RhoGEF3 and down-regulation of the Crumbs complex by the E3 ubiquitin ligase Neuralized. Anisotropy in Crumbs complex levels also results in accumulation of junctional myosin. Disrupting the regulation of Crumbs by Neuralized lowered junctional myosin and led to imprecision in the integration of emerging NSCs into the front. Thus, Neuralized promotes smooth progression of the differentiation front by coupling epithelium remodeling at the tissue level with NSC fate acquisition.
    MeSH term(s) Animals ; Cell Polarity ; Drosophila Proteins/genetics ; Drosophila Proteins/metabolism ; Drosophila melanogaster/genetics ; Drosophila melanogaster/growth & development ; Drosophila melanogaster/metabolism ; Epithelium/physiology ; Morphogenesis ; Neural Stem Cells/cytology ; Neural Stem Cells/metabolism ; Neurons/cytology ; Neurons/metabolism ; Optic Lobe, Nonmammalian/cytology ; Optic Lobe, Nonmammalian/metabolism ; Ubiquitin-Protein Ligases/metabolism
    Chemical Substances Drosophila Proteins ; Ubiquitin-Protein Ligases (EC 2.3.2.27)
    Language English
    Publishing date 2021-04-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 218154-x
    ISSN 1540-8140 ; 0021-9525
    ISSN (online) 1540-8140
    ISSN 0021-9525
    DOI 10.1083/jcb.202005035
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Activation of Arp2/3 by WASp Is Essential for the Endocytosis of Delta Only during Cytokinesis in Drosophila.

    Trylinski, Mateusz / Schweisguth, François

    Cell reports

    2019  Volume 28, Issue 1, Page(s) 1–10.e3

    Abstract: The actin nucleator Arp2/3 generates pushing forces in response to signals integrated by SCAR and WASp. In Drosophila, the activation of Arp2/3 by WASp is specifically required for Notch signaling following asymmetric cell division. How WASp and Arp2/3 ... ...

    Abstract The actin nucleator Arp2/3 generates pushing forces in response to signals integrated by SCAR and WASp. In Drosophila, the activation of Arp2/3 by WASp is specifically required for Notch signaling following asymmetric cell division. How WASp and Arp2/3 regulate Notch activity and why receptor activation requires WASp and Arp2/3 only in the context of intra-lineage fate decisions are unclear. Here, we find that WASp, but not SCAR, is required for Notch activation soon after division of the sensory organ precursor cell. Conversely, SCAR, but not WASp, is required to expand the cell-cell contact between the two SOP daughters. Thus, these two activities of Arp2/3 can be uncoupled. Using a time-resolved endocytosis assay, we show that WASp and Arp2/3 are required for the endocytosis of Dl only during cytokinesis. We propose that WASp-Arp2/3 provides an extra pushing force that is specifically required for the efficient endocytosis of Dl during cytokinesis.
    MeSH term(s) Actin-Related Protein 2/genetics ; Actin-Related Protein 2/metabolism ; Actins/genetics ; Actins/metabolism ; Animals ; Cytokinesis/genetics ; Drosophila/genetics ; Drosophila/metabolism ; Drosophila Proteins/genetics ; Drosophila Proteins/metabolism ; Endocytosis/genetics ; Intracellular Signaling Peptides and Proteins/metabolism ; Membrane Proteins/metabolism ; Microfilament Proteins/metabolism ; Proto-Oncogene Proteins c-akt/metabolism ; Receptors, Notch/metabolism ; Wiskott-Aldrich Syndrome Protein/genetics ; Wiskott-Aldrich Syndrome Protein/metabolism
    Chemical Substances Actin-Related Protein 2 ; Actins ; Arp3 protein, Drosophila ; Drosophila Proteins ; Intracellular Signaling Peptides and Proteins ; Membrane Proteins ; Microfilament Proteins ; N protein, Drosophila ; Receptors, Notch ; SCAR protein, Drosophila ; WASp protein, Drosophila ; Wiskott-Aldrich Syndrome Protein ; delta protein ; Proto-Oncogene Proteins c-akt (EC 2.7.11.1)
    Language English
    Publishing date 2019-07-03
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2649101-1
    ISSN 2211-1247 ; 2211-1247
    ISSN (online) 2211-1247
    ISSN 2211-1247
    DOI 10.1016/j.celrep.2019.06.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Activation of Arp2/3 by WASp Is Essential for the Endocytosis of Delta Only during Cytokinesis in Drosophila

    Mateusz Trylinski / François Schweisguth

    Cell Reports, Vol 28, Iss 1, Pp 1-10.e

    2019  Volume 3

    Abstract: ... decisions. Trylinski and Schweisguth report that WASp-Arp2/3 is key for the efficient endocytosis of Delta ...

    Abstract Summary: The actin nucleator Arp2/3 generates pushing forces in response to signals integrated by SCAR and WASp. In Drosophila, the activation of Arp2/3 by WASp is specifically required for Notch signaling following asymmetric cell division. How WASp and Arp2/3 regulate Notch activity and why receptor activation requires WASp and Arp2/3 only in the context of intra-lineage fate decisions are unclear. Here, we find that WASp, but not SCAR, is required for Notch activation soon after division of the sensory organ precursor cell. Conversely, SCAR, but not WASp, is required to expand the cell-cell contact between the two SOP daughters. Thus, these two activities of Arp2/3 can be uncoupled. Using a time-resolved endocytosis assay, we show that WASp and Arp2/3 are required for the endocytosis of Dl only during cytokinesis. We propose that WASp-Arp2/3 provides an extra pushing force that is specifically required for the efficient endocytosis of Dl during cytokinesis. : WASp-Arp2/3 is required for Notch-mediated intra-lineage fate decisions. Trylinski and Schweisguth report that WASp-Arp2/3 is key for the efficient endocytosis of Delta only during cytokinesis. This helps explain how and why how actin polymerization is key for Notch activation only in the context of asymmetric cell divisions. Keywords: Notch, actin, Arp2/3, WASp, endocytosis, Drosophila, asymmetric cell division, cell fate, cytokinesis, neurogenesis
    Keywords Biology (General) ; QH301-705.5
    Subject code 570
    Language English
    Publishing date 2019-07-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Response to "Does pupal communication influence Wolbachia-mediated cytoplasmic incompatibility?"

    Pontier, Stephanie M / Schweisguth, François

    Current biology : CB

    2017  Volume 27, Issue 2, Page(s) R55–R56

    Abstract: In a recent Current Biology paper [1], we reported that pheromone communication occurred during metamorphosis in Drosophila melanogaster. Female pheromones appeared to influence various aspects of the physiology and development of adult males. In ... ...

    Abstract In a recent Current Biology paper [1], we reported that pheromone communication occurred during metamorphosis in Drosophila melanogaster. Female pheromones appeared to influence various aspects of the physiology and development of adult males. In particular, we observed that this communication regulated testis development and had a positive impact on reproduction, as measured by a difference in the % of eggs developing into larvae in crosses involving adult male flies that had developed at metamorphosis with or without female pupae [1].
    MeSH term(s) Animals ; Drosophila ; Drosophila melanogaster ; Female ; Germ Cells ; Male ; Pupa ; Wolbachia
    Language English
    Publishing date 2017-01-23
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 1071731-6
    ISSN 1879-0445 ; 0960-9822
    ISSN (online) 1879-0445
    ISSN 0960-9822
    DOI 10.1016/j.cub.2016.12.013
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  8. Article ; Online: HaloTag-based reporters for sparse labeling and cell tracking.

    Couturier, Lydie / Luna, Juan / Mazouni, Khalil / Mestdagh, Claire / Phan, Minh-Son / Corson, Francis / Schweisguth, Francois

    Fly

    2022  Volume 16, Issue 1, Page(s) 360–366

    Abstract: Multiscale analysis of morphogenesis requires to follow and measure in real-time ... ...

    Abstract Multiscale analysis of morphogenesis requires to follow and measure in real-time the
    MeSH term(s) Animals ; Cell Tracking ; Single-Cell Analysis ; Drosophila
    Chemical Substances haloalkane dehalogenase (EC 3.8.1.5)
    Language English
    Publishing date 2022-11-02
    Publishing country United States
    Document type Journal Article
    ISSN 1933-6942
    ISSN (online) 1933-6942
    DOI 10.1080/19336934.2022.2142460
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  9. Article ; Online: Regulation of Notch output dynamics via specific E(spl)-HLH factors during bristle patterning in Drosophila.

    Couturier, Lydie / Mazouni, Khalil / Corson, Francis / Schweisguth, François

    Nature communications

    2019  Volume 10, Issue 1, Page(s) 3486

    Abstract: The stereotyped arrangement of sensory bristles on the adult fly thorax arises from a self-organized process, in which inhibitory Notch signaling both delimits proneural stripes and singles out sensory organ precursor cells (SOPs). A dynamic balance ... ...

    Abstract The stereotyped arrangement of sensory bristles on the adult fly thorax arises from a self-organized process, in which inhibitory Notch signaling both delimits proneural stripes and singles out sensory organ precursor cells (SOPs). A dynamic balance between proneural factors and Enhancer of split-HLH (E(spl)-HLH) Notch targets underlies patterning, but how this is regulated is unclear. Here, were identify two classes of E(spl)-HLH factors, whose expression both precedes and delimits proneural activity, and is dependent on proneural activity and required for proper SOP spacing within the stripes, respectively. These two classes are partially redundant, since a member of the second class, that is normally cross-repressed by members of the first class, can functionally compensate for their absence. The regulation of specific E(spl)-HLH genes by proneural factors amplifies the response to Notch as SOPs are being selected, contributing to patterning dynamics in the notum, and likely operates in other developmental contexts.
    Language English
    Publishing date 2019-08-02
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-019-11477-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: When you are Dishevelled, fat is good and acid is bad!

    Schweisguth, François

    Nature cell biology

    2009  Volume 11, Issue 3, Page(s) 237–239

    Abstract: Frizzled receptors regulate cell fate decisions and planar cell polarity by means of distinct intracellular effectors. The choice between these two signalling outputs may involve a pH-dependent interaction between Dishevelled and negatively charged ... ...

    Abstract Frizzled receptors regulate cell fate decisions and planar cell polarity by means of distinct intracellular effectors. The choice between these two signalling outputs may involve a pH-dependent interaction between Dishevelled and negatively charged lipids at the plasma membrane.
    MeSH term(s) Adaptor Proteins, Signal Transducing/chemistry ; Adaptor Proteins, Signal Transducing/metabolism ; Animals ; Cell Membrane/metabolism ; Cell Polarity ; Dishevelled Proteins ; Drosophila Proteins ; Drosophila melanogaster/cytology ; Drosophila melanogaster/metabolism ; Epithelial Cells/cytology ; Epithelial Cells/metabolism ; Frizzled Receptors/chemistry ; Frizzled Receptors/metabolism ; Hydrogen-Ion Concentration ; Phospholipids/metabolism ; Phosphoproteins/chemistry ; Phosphoproteins/metabolism ; Protein Binding ; Signal Transduction
    Chemical Substances Adaptor Proteins, Signal Transducing ; Dishevelled Proteins ; Drosophila Proteins ; Frizzled Receptors ; Phospholipids ; Phosphoproteins ; dsh protein, Drosophila
    Language English
    Publishing date 2009-03-02
    Publishing country England
    Document type Journal Article ; Comment
    ZDB-ID 1474722-4
    ISSN 1476-4679 ; 1465-7392
    ISSN (online) 1476-4679
    ISSN 1465-7392
    DOI 10.1038/ncb0309-237
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