1
|
Zhu J, Li Y, Zhong C, Zhu M, Zheng Y, Xiong A, Meng P, Shan L, Li Y, Huang J. Neuritin affects the activity of neuralized-like 1 by promoting degradation and weakening its affinity for substrate. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1650-1658. [PMID: 37249336 PMCID: PMC10577452 DOI: 10.3724/abbs.2023098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 05/04/2023] [Indexed: 05/31/2023] Open
Abstract
Neuritin plays a key role in neural development and regeneration by promoting neurite outgrowth and synapse maturation. Our previous research revealed the mechanism by which neuritin inhibits Notch signaling through interaction with neuralized-like 1 (Neurl1) to promote neurite growth. However, how neuritin regulates Notch signaling through Neurl1 has not been elucidated. Here, we first confirm that neuritin is an upstream regulator of Neurl1 and inhibits Notch signaling through Neurl1. Neurl1 is an E3 ubiquitin ligase that can promote ubiquitination and endocytosis of the Notch1 ligand Jagged1. Therefore, we observe the effect of neuritin on the ligase activity of Neurl1. The results indicate that neuritin inhibits Neurl1 activity by reducing the ubiquitination level and endocytosis of the target protein Jagged1. Moreover, we find that decreased activity of Neurl1 results in reduced expression of Notch receptor Notch intracellular domain (NICD) and downstream target gene hairy and enhancer of split-1 ( HES1). Furthermore, we investigate how neuritin affects Neurl1 enzyme activity. The results show that neuritin not only weakens the affinity between Neurl1 and Jagged1 but also promotes the degradation of Neurl1 by the 26S proteasome pathway. Taken together, our results suggest that neuritin negatively regulates Notch signaling by inhibiting the activity of Neurl1, promoting the degradation of Neurl1 and weakening the affinity of Neurl1 for Jagged1. Our study clarifies the molecular mechanisms of neuritin in regulating the Notch signaling pathway and provides new clues about how neuritin mediates neural regeneration and plasticity.
Collapse
Affiliation(s)
- Jingling Zhu
- Department of Biochemistry and Molecular BiologyTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China
- the Key Laboratory of Xinjiang Endemic & Ethnic Diseases and Department of BiochemistryShihezi University School of MedicineShihezi832002China
| | - Yu Li
- the Key Laboratory of Xinjiang Endemic & Ethnic Diseases and Department of BiochemistryShihezi University School of MedicineShihezi832002China
| | - Chen Zhong
- the First Affiliated Hospital of Shihezi University School of MedicineShihezi832000China
| | - Meiyi Zhu
- the First Affiliated Hospital of Shihezi University School of MedicineShihezi832000China
| | - Yan Zheng
- the Key Laboratory of Xinjiang Endemic & Ethnic Diseases and Department of BiochemistryShihezi University School of MedicineShihezi832002China
| | - Anying Xiong
- the Key Laboratory of Xinjiang Endemic & Ethnic Diseases and Department of BiochemistryShihezi University School of MedicineShihezi832002China
| | - Pingping Meng
- the Key Laboratory of Xinjiang Endemic & Ethnic Diseases and Department of BiochemistryShihezi University School of MedicineShihezi832002China
| | - Liya Shan
- the Key Laboratory of Xinjiang Endemic & Ethnic Diseases and Department of BiochemistryShihezi University School of MedicineShihezi832002China
| | - Yang Li
- the Key Laboratory of Xinjiang Endemic & Ethnic Diseases and Department of BiochemistryShihezi University School of MedicineShihezi832002China
| | - Jin Huang
- Department of Biochemistry and Molecular BiologyTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China
- the Key Laboratory of Xinjiang Endemic & Ethnic Diseases and Department of BiochemistryShihezi University School of MedicineShihezi832002China
| |
Collapse
|
2
|
Lampada A, Taylor V. Notch signaling as a master regulator of adult neurogenesis. Front Neurosci 2023; 17:1179011. [PMID: 37457009 PMCID: PMC10339389 DOI: 10.3389/fnins.2023.1179011] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/05/2023] [Indexed: 07/18/2023] Open
Abstract
Neurogenesis ceases in most regions of the mammalian brain before or shortly after birth, however, in a few restricted brain regions, the production of new neurons proceeds into adulthood. Neural stem cells (NSCs) in these neurogenic zones are integrated into niches that control their activity and fate. Most stem cells in the adult brain are mitotically inactive and these cells can remain quiescent for months or even years. One of the key questions is what are the molecular mechanisms that regulate NSC maintenance and differentiation. Notch signaling has been shown to be a critical regulator of stem cell activity and maintenance in many tissues including in the nervous system. In this mini-review we discuss the roles of Notch signaling and the functions of the different Notch receptors and ligands in regulating neurogenesis in the adult murine brain. We review the functions of Notch signaling components in controlling NSC quiescence and entry into cell cycle and neurogenesis.
Collapse
|
3
|
Kimura S, Dupee Z, Lima F, Allen R, Kazmi S, Diodati N, Lukacs NW, Kunkel SL, Schaller M. Jagged-1 Reduces Th2 Inflammation and Memory Cell Expansion in Allergic Airway Disease. Immunohorizons 2023; 7:168-176. [PMID: 36729482 PMCID: PMC10563391 DOI: 10.4049/immunohorizons.2300001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 01/18/2023] [Indexed: 02/03/2023] Open
Abstract
Notch ligands present during interactions between T cells and dendritic cells (DCs) dictate cell phenotype through a myriad of effects including the induction of T cell regulation, survival, and cytokine response. The presence of Notch ligands on DCs varies with the context of the inflammatory response; Jagged-1 is constitutively expressed, whereas Delta-like 1 and Delta-like 4 are induced in response to pathogen exposure. Although Delta-like and Jagged ligands send different signals through the same Notch receptor, the role of these two ligands in peripheral T cell immunity is not clear. The goal of our studies was to determine the role of Jagged-1 in the pathogen-free inflammation induced by OVA during allergic airway disease in mice. Our studies show that a deletion in DC-expressed Jagged-1 causes a significant increase in cytokine production, resulting in increased mucus production and increased eosinophilia in the lungs of mice sensitized and challenged with OVA. We also observed that a reduction of Jagged-1 expression is correlated with increased expression of the Notch 1 receptor on the surface of CD4+ T cells in both the lung and lymph node. Through transfer studies using OT-II transgenic T cells, we demonstrate that Jagged-1 represses the expansion of CD44+CD62L+CCR7+ memory cells and promotes the expansion of CD44+CD62L- effector cells, but it has no effect on the expansion of naive cells during allergic airway disease. These data suggest that Jagged-1 may have different roles in Ag-specific T cell responses, depending on the maturity of the stimulated T cell.
Collapse
Affiliation(s)
- Soichiro Kimura
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
- Division of Infection Prevention and Control, Faculty of Pharmaceutical Sciences, Shonan University of Medical Sciences, Kanagawa, Japan
| | - Zadia Dupee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL; and
| | - Felipe Lima
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL; and
| | - Ronald Allen
- Department of Pathology, University of Michigan, Ann Arbor, MI
| | - Soha Kazmi
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL; and
| | - Nickolas Diodati
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL; and
| | | | | | - Matthew Schaller
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL; and
| |
Collapse
|
4
|
High-Content RNAi Phenotypic Screening Unveils the Involvement of Human Ubiquitin-Related Enzymes in Late Cytokinesis. Cells 2022; 11:cells11233862. [PMID: 36497121 PMCID: PMC9737832 DOI: 10.3390/cells11233862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/18/2022] [Accepted: 11/24/2022] [Indexed: 12/04/2022] Open
Abstract
CEP55 is a central regulator of late cytokinesis and is overexpressed in numerous cancers. Its post-translationally controlled recruitment to the midbody is crucial to the structural coordination of the abscission sequence. Our recent evidence that CEP55 contains two ubiquitin-binding domains was the first structural and functional link between ubiquitin signaling and ESCRT-mediated severing of the intercellular bridge. So far, high-content screens focusing on cytokinesis have used multinucleation as the endpoint readout. Here, we report an automated image-based detection method of intercellular bridges, which we applied to further our understanding of late cytokinetic signaling by performing an RNAi screen of ubiquitin ligases and deubiquitinases. A secondary validation confirmed four candidate genes, i.e., LNX2, NEURL, UCHL1 and RNF157, whose downregulation variably affects interconnected phenotypes related to CEP55 and its UBDs, as follows: decreased recruitment of CEP55 to the midbody, increased number of midbody remnants per cell, and increased frequency of intercellular bridges or multinucleation events. This brings into question the Notch-dependent or independent contributions of LNX2 and NEURL proteins to late cytokinesis. Similarly, the role of UCHL1 in autophagy could link its function with the fate of midbody remnants. Beyond the biological interest, this high-content screening approach could also be used to isolate anticancer drugs that act by impairing cytokinesis and CEP55 functions.
Collapse
|
5
|
Khamaisi B, Luca VC, Blacklow SC, Sprinzak D. Functional Comparison between Endogenous and Synthetic Notch Systems. ACS Synth Biol 2022; 11:3343-3353. [PMID: 36107643 PMCID: PMC9594772 DOI: 10.1021/acssynbio.2c00247] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The Notch pathway converts receptor-ligand interactions at the cell surface into a transcriptional response in the receiver cell. In recent years, synthetic Notch systems (synNotch) that respond to different inputs and transduce different transcriptional responses have been engineered. One class of synNotch systems uses antibody-antigen interactions at the cell surface to induce the proteolytic cleavage cascade of the endogenous Notch autoregulatory core and the consequent release of a synNotch intracellular domain (ICD), converting surface antigen detection into a cellular response. While the activation of endogenous Notch requires ubiquitylation and subsequent endocytosis of the ligand ICD, these synNotch systems do not seem to have such a requirement because the synNotch ligands completely lack an ICD. This observation raises questions about existing models for the synNotch activation mechanism. Here, we test how different structural and biochemical factors affect the dependence of endogenous and synthetic Notch activation on ligand ICD. We compare the behavior of antibody-antigen synNotch (aa-synNotch) to that of endogenous Notch, and to a synNotch system that uses rapamycin induced dimerization of FK506 binding protein (FKBP) and FKBP rapamycin binding (FRB) domaindimerization domains (ff-synNotch), which still requires a ligand ICD. We found that differences in receptor-ligand affinity, in the identity of the transmembrane domain, or in the presence or absence of extracellular epidermal growth factor repeats cannot explain the differences in ligand ICD requirement that distinguishes aa-synNotch from endogenous Notch or ff-synNotch. We also found that unlike endogenous Notch and ff-synNotch, the aa-synNotch system does not exhibit trans-endocytosis of the receptor extracellular domain into the sender cell. These findings suggest that the aa-synNotch systems bypass the ligand ICD requirement because antigen-antibody pairs are able to promote other adhesive cell-cell interactions that provide the mechanical tension needed for ligand activation.
Collapse
Affiliation(s)
- Bassma Khamaisi
- George
S. Wise Faculty of Life Sciences, School of Neurobiology, Biochemistry,
and Biophysics, Tel Aviv University, Tel Aviv 69978, Israel
| | - Vincent C. Luca
- Department
of Drug Discovery, Moffitt Cancer Center
and Research Institute, Tampa, Florida 33612, United States
| | - Stephen C. Blacklow
- Department
of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - David Sprinzak
- George
S. Wise Faculty of Life Sciences, School of Neurobiology, Biochemistry,
and Biophysics, Tel Aviv University, Tel Aviv 69978, Israel,
| |
Collapse
|
6
|
Luo H, Li M, Wang F, Yang Y, Wang Q, Zhao Y, Du F, Chen Y, Shen J, Zhao Q, Zeng J, Wang S, Chen M, Li X, Li W, Sun Y, Gu L, Wen Q, Xiao Z, Wu X. The role of intestinal stem cell within gut homeostasis: Focusing on its interplay with gut microbiota and the regulating pathways. Int J Biol Sci 2022; 18:5185-5206. [PMID: 35982910 PMCID: PMC9379405 DOI: 10.7150/ijbs.72600] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 07/29/2022] [Indexed: 12/05/2022] Open
Abstract
Intestinal stem cells (ISCs) play an important role in maintaining intestinal homeostasis via promoting a healthy gut barrier. Within the stem cell niche, gut microbiota linking the crosstalk of dietary influence and host response has been identified as a key regulator of ISCs. Emerging insights from recent research reveal that ISC and gut microbiota interplay regulates epithelial self-renewal. This article reviews the recent knowledge on the key role of ISC in their local environment (stem cell niche) associating with gut microbiota and their metabolites as well as the signaling pathways. The current progress of intestinal organoid culture is further summarized. Subsequently, the key challenges and future directions are discussed.
Collapse
Affiliation(s)
- Haoming Luo
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China
| | - Mingxing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China
| | - Fang Wang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China
| | - Yifei Yang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China
| | - Qin Wang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China
| | - Yueshui Zhao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou 646000, Sichuan, China
| | - Fukuan Du
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou 646000, Sichuan, China
| | - Yu Chen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou 646000, Sichuan, China
| | - Jing Shen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou 646000, Sichuan, China
| | - Qianyun Zhao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China
| | - Jiuping Zeng
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou 646000, Sichuan, China
| | - Shengpeng Wang
- State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Meijuan Chen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Xiaobing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Wanping Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Yuhong Sun
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Li Gu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Qinglian Wen
- Department of Oncology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Zhangang Xiao
- Department of Oncology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China.,Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Xu Wu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, Sichuan, China.,State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| |
Collapse
|
7
|
Furman DP, Bukharina TA. Genetic Regulation of Morphogenesis of Drosophila melanogaster Mechanoreceptors. Russ J Dev Biol 2022. [DOI: 10.1134/s1062360422040038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
8
|
Langridge PD, Garcia Diaz A, Chan JY, Greenwald I, Struhl G. Evolutionary plasticity in the requirement for force exerted by ligand endocytosis to activate C. elegans Notch proteins. Curr Biol 2022; 32:2263-2271.e6. [PMID: 35349791 PMCID: PMC9133158 DOI: 10.1016/j.cub.2022.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/28/2022] [Accepted: 03/08/2022] [Indexed: 10/18/2022]
Abstract
The conserved transmembrane receptor Notch has diverse and profound roles in controlling cell fate during animal development. In the absence of ligand, a negative regulatory region (NRR) in the Notch ectodomain adopts an autoinhibited confirmation, masking an ADAM protease cleavage site;1,2 ligand binding induces cleavage of the NRR, leading to Notch ectodomain shedding as the first step of signal transduction.3,4 In Drosophila and vertebrates, recruitment of transmembrane Delta/Serrate/LAG-2 (DSL) ligands by the endocytic adaptor Epsin, and their subsequent internalization by Clathrin-mediated endocytosis, exerts a "pulling force" on Notch that is essential to expose the cleavage site in the NRR.4-6 Here, we show that Epsin-mediated endocytosis of transmembrane ligands is not essential to activate the two C. elegans Notch proteins, LIN-12 and GLP-1. Using an in vivo force sensing assay in Drosophila,6 we present evidence (1) that the LIN-12 and GLP-1 NRRs are tuned to lower force thresholds than the NRR of Drosophila Notch, and (2) that this difference depends on the absence of a "leucine plug" that occludes the cleavage site in the Drosophila and vertebrate Notch NRRs.1,2 Our results thus establish an unexpected evolutionary plasticity in the force-dependent mechanism of Notch activation and implicate a specific structural element, the leucine plug, as a determinant.
Collapse
Affiliation(s)
- Paul D Langridge
- Department of Genetics and Development, Columbia University, New York, NY 10027, USA; Mortimer B. Zuckerman Mind Brain Behavior Institute, New York, NY 10027, USA.
| | | | - Jessica Yu Chan
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA
| | - Iva Greenwald
- Department of Biological Sciences, Columbia University, New York, NY 10027, USA.
| | - Gary Struhl
- Department of Genetics and Development, Columbia University, New York, NY 10027, USA; Mortimer B. Zuckerman Mind Brain Behavior Institute, New York, NY 10027, USA.
| |
Collapse
|
9
|
Francis CR, Kushner EJ. Trafficking in blood vessel development. Angiogenesis 2022; 25:291-305. [PMID: 35449244 PMCID: PMC9249721 DOI: 10.1007/s10456-022-09838-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/03/2022] [Indexed: 02/17/2023]
Abstract
Blood vessels demonstrate a multitude of complex signaling programs that work in concert to produce functional vasculature networks during development. A known, but less widely studied, area of endothelial cell regulation is vesicular trafficking, also termed sorting. After moving through the Golgi apparatus, proteins are shuttled to organelles, plugged into membranes, recycled, or degraded depending on the internal and extrinsic cues. A snapshot of these protein-sorting systems can be viewed as a trafficking signature that is not only unique to endothelial tissue, but critically important for blood vessel form and function. In this review, we will cover how vesicular trafficking impacts various aspects of angiogenesis, such as sprouting, lumen formation, vessel stabilization, and secretion, emphasizing the role of Rab GTPase family members and their various effectors.
Collapse
Affiliation(s)
- Caitlin R Francis
- Department of Biological Sciences, University of Denver, Denver, CO, 80210, USA
| | - Erich J Kushner
- Department of Biological Sciences, University of Denver, Denver, CO, 80210, USA.
| |
Collapse
|
10
|
Hildebrand S, Ibrahim M, Schlitzer A, Maegdefessel L, Röll W, Pfeifer A. PDGF regulates guanylate cyclase expression and cGMP signaling in vascular smooth muscle. Commun Biol 2022; 5:197. [PMID: 35241778 PMCID: PMC8894477 DOI: 10.1038/s42003-022-03140-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/08/2022] [Indexed: 11/17/2022] Open
Abstract
The nitric oxide-cGMP (NO-cGMP) pathway is of outstanding importance for vascular homeostasis and has multiple beneficial effects in vascular disease. Neointimal hyperplasia after vascular injury is caused by increased proliferation and migration of vascular smooth muscle cells (VSMCs). However, the role of NO-cGMP signaling in human VSMCs in this process is still not fully understood. Here, we investigate the interaction between platelet derived growth factor (PDGF)-signaling, one of the major contributors to neointimal hyperplasia, and the cGMP pathway in vascular smooth muscle, focusing on NO-sensitive soluble guanylyl cyclase (sGC). We show that PDGF reduces sGC expression by activating PI3K and Rac1, which in turn alters Notch ligand signaling. These data are corroborated by gene expression analysis in human atheromas, as well as immunohistological analysis of diseased and injured arteries. Collectively, our data identify the crosstalk between PDGF and NO/sGC signaling pathway in human VSMCs as a potential target to tackle neointimal hyperplasia. PDGF reduces expression of nitric oxide-sensitive soluble guanylyl cyclase (NO-sGC) through PI3K-P-Rex1-Rac1 signaling in vascular smooth muscle cells. These insights provide possible avenues to prevent dysregulation of NO/cGMP signaling in vascular disease.
Collapse
Affiliation(s)
- Staffan Hildebrand
- Institute of Pharmacology and Toxicology, University Hospital, University of Bonn, Bonn, Germany.
| | - Mohamed Ibrahim
- Quantitative Systems Biology, LIMES-Institute (Life and Medical Sciences Bonn), University of Bonn, Bonn, Germany
| | - Andreas Schlitzer
- Quantitative Systems Biology, LIMES-Institute (Life and Medical Sciences Bonn), University of Bonn, Bonn, Germany
| | - Lars Maegdefessel
- Experimental Vascular Surgery and Medicine, Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar - Technical University Munich, Munich, Germany.,Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Wilhelm Röll
- Department of Cardiac Surgery, University of Bonn, Bonn, Germany
| | - Alexander Pfeifer
- Institute of Pharmacology and Toxicology, University Hospital, University of Bonn, Bonn, Germany.
| |
Collapse
|
11
|
Temperature sensitivity of Notch signaling underlies species-specific developmental plasticity and robustness in amniote brains. Nat Commun 2022; 13:96. [PMID: 35013223 PMCID: PMC8748702 DOI: 10.1038/s41467-021-27707-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 12/06/2021] [Indexed: 11/08/2022] Open
Abstract
Ambient temperature significantly affects developmental timing in animals. The temperature sensitivity of embryogenesis is generally believed to be a consequence of the thermal dependency of cellular metabolism. However, the adaptive molecular mechanisms that respond to variations in temperature remain unclear. Here, we report species-specific thermal sensitivity of Notch signaling in the developing amniote brain. Transient hypothermic conditions increase canonical Notch activity and reduce neurogenesis in chick neural progenitors. Increased biosynthesis of phosphatidylethanolamine, a major glycerophospholipid components of the plasma membrane, mediates hypothermia-induced Notch activation. Furthermore, the species-specific thermal dependency of Notch signaling is associated with developmental robustness to altered Notch signaling. Our results reveal unique regulatory mechanisms for temperature-dependent neurogenic potentials that underlie developmental and evolutionary adaptations to a range of ambient temperatures in amniotes. Ambient temperature significantly affects embryogenesis, but adaptive molecular mechanisms that respond to temperature remain unclear. Here, the authors identified species-specific thermal sensitivity of Notch signaling in developing amniote brains.
Collapse
|
12
|
Campbell LJ, Levendusky JL, Steines SA, Hyde DR. Retinal regeneration requires dynamic Notch signaling. Neural Regen Res 2021; 17:1199-1209. [PMID: 34782554 PMCID: PMC8643038 DOI: 10.4103/1673-5374.327326] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Retinal damage in the adult zebrafish induces Müller glia reprogramming to produce neuronal progenitor cells that proliferate and differentiate into retinal neurons. Notch signaling, which is a fundamental mechanism known to drive cell-cell communication, is required to maintain Müller glia in a quiescent state in the undamaged retina, and repression of Notch signaling is necessary for Müller glia to reenter the cell cycle. The dynamic regulation of Notch signaling following retinal damage also directs proliferation and neurogenesis of the Müller glia-derived progenitor cells in a robust regeneration response. In contrast, mammalian Müller glia respond to retinal damage by entering a prolonged gliotic state that leads to additional neuronal death and permanent vision loss. Understanding the dynamic regulation of Notch signaling in the zebrafish retina may aid efforts to stimulate Müller glia reprogramming for regeneration of the diseased human retina. Recent findings identified DeltaB and Notch3 as the ligand-receptor pair that serves as the principal regulators of zebrafish Müller glia quiescence. In addition, multiomics datasets and functional studies indicate that additional Notch receptors, ligands, and target genes regulate cell proliferation and neurogenesis during the regeneration time course. Still, our understanding of Notch signaling during retinal regeneration is limited. To fully appreciate the complex regulation of Notch signaling that is required for successful retinal regeneration, investigation of additional aspects of the pathway, such as post-translational modification of the receptors, ligand endocytosis, and interactions with other fundamental pathways is needed. Here we review various modes of Notch signaling regulation in the context of the vertebrate retina to put recent research in perspective and to identify open areas of inquiry.
Collapse
Affiliation(s)
- Leah J Campbell
- Department of Biological Sciences, Center for Zebrafish Research, Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, USA
| | - Jaclyn L Levendusky
- Department of Biological Sciences, Center for Zebrafish Research, Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, USA
| | - Shannon A Steines
- Department of Biological Sciences, Center for Zebrafish Research, Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, USA
| | - David R Hyde
- Department of Biological Sciences, Center for Zebrafish Research, Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, USA
| |
Collapse
|
13
|
Zhang F, Chen Y, Shen J, Zhang J. The Ubiquitin Conjugating Enzyme UbcD1 is Required for Notch Signaling Activation During Drosophila Wing Development. Front Genet 2021; 12:770853. [PMID: 34712275 PMCID: PMC8546230 DOI: 10.3389/fgene.2021.770853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 09/30/2021] [Indexed: 11/13/2022] Open
Abstract
Notch signaling pathway plays crucial roles in animal development. Protein ubiquitination contributes to Notch signaling regulation by governing the stability and activity of major signaling components. Studies in Drosophila have identified multiple ubiquitin ligases and deubiquitinating enzymes that modify Notch ligand and receptor proteins. The fate of ubiquitinated substrates depend on topologies of the attached ubiquitin chains, which are determined by the ubiquitin conjugating enzymes (E2 enzymes). However, which E2 enzymes participate in Notch signal transduction remain elusive. Here, we report that the E2 enzyme UbcD1 is required for Notch signaling activation during Drosophila wing development. Mutations of UbcD1 lead to marginal nicks in the adult wing and reduction of Notch signaling targets expression in the wing imaginal disc. Genetic analysis reveal that UbcD1 functions in the signaling receiving cells prior to cleavage of the Notch protein. We provide further evidence suggesting that UbcD1 is likely involved in endocytic trafficking of Notch protein. Our results demonstrate that UbcD1 positively regulates Notch signaling and thus reveal a novel role of UbcD1 in development.
Collapse
Affiliation(s)
- Fengchao Zhang
- MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Yao Chen
- MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Jie Shen
- MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Junzheng Zhang
- MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| |
Collapse
|
14
|
Seib E, Klein T. The role of ligand endocytosis in notch signalling. Biol Cell 2021; 113:401-418. [PMID: 34038572 DOI: 10.1111/boc.202100009] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 05/05/2021] [Accepted: 05/17/2021] [Indexed: 12/12/2022]
Abstract
The Notch signalling receptor is a mechanoreceptor that is activated by force. This force elicits a conformational change in Notch that results in the release of its intracellular domain into the cytosol by two consecutive proteolytic cleavages. In most cases, the force is generated by pulling of the ligands on the receptor upon their endocytosis. In this review, we summarise recent work that shed a more detailed light on the role of endocytosis during ligand-dependent Notch activation and discuss the role of ubiquitylation of the ligands during this process.
Collapse
Affiliation(s)
- Ekaterina Seib
- Institute of Genetics, Heinrich-Heine-Universitaet Duesseldorf, Universitaetsstr. 1, Duesseldorf, 40225, Germany
| | - Thomas Klein
- Institute of Genetics, Heinrich-Heine-Universitaet Duesseldorf, Universitaetsstr. 1, Duesseldorf, 40225, Germany
| |
Collapse
|
15
|
Blackie L, Tozluoglu M, Trylinski M, Walther RF, Schweisguth F, Mao Y, Pichaud F. A combination of Notch signaling, preferential adhesion and endocytosis induces a slow mode of cell intercalation in the Drosophila retina. Development 2021; 148:264928. [PMID: 33999996 PMCID: PMC8180261 DOI: 10.1242/dev.197301] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 04/09/2021] [Indexed: 12/25/2022]
Abstract
Movement of epithelial cells in a tissue occurs through neighbor exchange and drives tissue shape changes. It requires intercellular junction remodeling, a process typically powered by the contractile actomyosin cytoskeleton. This has been investigated mainly in homogeneous epithelia, where intercalation takes minutes. However, in some tissues, intercalation involves different cell types and can take hours. Whether slow and fast intercalation share the same mechanisms remains to be examined. To address this issue, we used the fly eye, where the cone cells exchange neighbors over ∼10 h to shape the lens. We uncovered three pathways regulating this slow mode of cell intercalation. First, we found a limited requirement for MyosinII. In this case, mathematical modeling predicts an adhesion-dominant intercalation mechanism. Genetic experiments support this prediction, revealing a role for adhesion through the Nephrin proteins Roughest and Hibris. Second, we found that cone cell intercalation is regulated by the Notch pathway. Third, we show that endocytosis is required for membrane removal and Notch activation. Taken together, our work indicates that adhesion, endocytosis and Notch can direct slow cell intercalation during tissue morphogenesis.
Collapse
Affiliation(s)
- Laura Blackie
- MRC Laboratory for Molecular Cell Biology (LMCB), University College London, London WC1E 6BT, UK.,MRC London Institute of Medical Sciences (LMS), London W12 0NN, UK
| | - Melda Tozluoglu
- MRC Laboratory for Molecular Cell Biology (LMCB), University College London, London WC1E 6BT, UK
| | - Mateusz Trylinski
- MRC Laboratory for Molecular Cell Biology (LMCB), University College London, London WC1E 6BT, UK.,Department of Developmental and Stem Cell Biology, Pasteur Institute, F-75015 Paris, France
| | - Rhian F Walther
- MRC Laboratory for Molecular Cell Biology (LMCB), University College London, London WC1E 6BT, UK
| | - François Schweisguth
- Department of Developmental and Stem Cell Biology, Pasteur Institute, F-75015 Paris, France.,CNRS, UMR3738, F-75015 Paris, France
| | - Yanlan Mao
- MRC Laboratory for Molecular Cell Biology (LMCB), University College London, London WC1E 6BT, UK.,Institute for the Physics of Living Systems, University College London, London WC1E 6BT, UK
| | - Franck Pichaud
- MRC Laboratory for Molecular Cell Biology (LMCB), University College London, London WC1E 6BT, UK.,Institute for the Physics of Living Systems, University College London, London WC1E 6BT, UK
| |
Collapse
|
16
|
Condorelli AG, El Hachem M, Zambruno G, Nystrom A, Candi E, Castiglia D. Notch-ing up knowledge on molecular mechanisms of skin fibrosis: focus on the multifaceted Notch signalling pathway. J Biomed Sci 2021; 28:36. [PMID: 33966637 PMCID: PMC8106838 DOI: 10.1186/s12929-021-00732-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 05/04/2021] [Indexed: 12/15/2022] Open
Abstract
Fibrosis can be defined as an excessive and deregulated deposition of extracellular matrix proteins, causing loss of physiological architecture and dysfunction of different tissues and organs. In the skin, fibrosis represents the hallmark of several acquired (e.g. systemic sclerosis and hypertrophic scars) and inherited (i.e. dystrophic epidermolysis bullosa) diseases. A complex series of interactions among a variety of cellular types and a wide range of molecular players drive the fibrogenic process, often in a context-dependent manner. However, the pathogenetic mechanisms leading to skin fibrosis are not completely elucidated. In this scenario, an increasing body of evidence has recently disclosed the involvement of Notch signalling cascade in fibrosis of the skin and other organs. Despite its apparent simplicity, Notch represents one of the most multifaceted, strictly regulated and intricate pathways with still unknown features both in health and disease conditions. Starting from the most recent advances in Notch activation and regulation, this review focuses on the pro-fibrotic function of Notch pathway in fibroproliferative skin disorders describing molecular networks, interplay with other pro-fibrotic molecules and pathways, including the transforming growth factor-β1, and therapeutic strategies under development.
Collapse
Affiliation(s)
- Angelo Giuseppe Condorelli
- Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children's Hospital, IRCCS, Piazza Sant' Onofrio 4, 00165, Rome, Italy.
| | - May El Hachem
- Dermatology Unit and Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children's Hospital, IRCCS, Piazza Sant' Onofrio 4, 00165, Rome, Italy
| | - Giovanna Zambruno
- Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children's Hospital, IRCCS, Piazza Sant' Onofrio 4, 00165, Rome, Italy
| | - Alexander Nystrom
- Department of Dermatology, Medical Faculty, Medical Center, University of Freiburg, Freiburg, Germany
| | - Eleonora Candi
- Department of Experimental Medicine, University of Rome "Tor Vergata", via Montpellier, 1, 00133, Rome, Italy.,IDI-IRCCS, via Monti di Creta 104, 00167, Rome, Italy
| | - Daniele Castiglia
- Laboratory of Molecular and Cell Biology, IDI-IRCCS, via Monti di Creta 104, 00167, Rome, Italy
| |
Collapse
|
17
|
Shard C, Luna-Escalante J, Schweisguth F. Tissue-wide coordination of epithelium-to-neural stem cell transition in the Drosophila optic lobe requires Neuralized. J Cell Biol 2021; 219:152101. [PMID: 32946560 PMCID: PMC7594497 DOI: 10.1083/jcb.202005035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 08/06/2020] [Accepted: 08/17/2020] [Indexed: 12/15/2022] Open
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.
Collapse
Affiliation(s)
- Chloé Shard
- Institut Pasteur, Paris, France.,UMR3738, Centre National de la Recherche Scientifique, Paris, France
| | - Juan Luna-Escalante
- Institut Pasteur, Paris, France.,UMR3738, Centre National de la Recherche Scientifique, Paris, France.,Laboratoire de Physique, Ecole Normale Supérieure, Centre National de la Recherche Scientifique, Sorbonne Université, Université Paris Diderot, Paris, France
| | - François Schweisguth
- Institut Pasteur, Paris, France.,UMR3738, Centre National de la Recherche Scientifique, Paris, France
| |
Collapse
|
18
|
Majumder S, Crabtree JS, Golde TE, Minter LM, Osborne BA, Miele L. Targeting Notch in oncology: the path forward. Nat Rev Drug Discov 2020; 20:125-144. [PMID: 33293690 DOI: 10.1038/s41573-020-00091-3] [Citation(s) in RCA: 147] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2020] [Indexed: 02/07/2023]
Abstract
Notch signalling is involved in many aspects of cancer biology, including angiogenesis, tumour immunity and the maintenance of cancer stem-like cells. In addition, Notch can function as an oncogene and a tumour suppressor in different cancers and in different cell populations within the same tumour. Despite promising preclinical results and early-phase clinical trials, the goal of developing safe, effective, tumour-selective Notch-targeting agents for clinical use remains elusive. However, our continually improving understanding of Notch signalling in specific cancers, individual cancer cases and different cell populations, as well as crosstalk between pathways, is aiding the discovery and development of novel investigational Notch-targeted therapeutics.
Collapse
Affiliation(s)
- Samarpan Majumder
- Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Stanley S. Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Judy S Crabtree
- Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Stanley S. Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Todd E Golde
- Department of Neuroscience, University of Florida, Gainesville, FL, USA.,McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Lisa M Minter
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Barbara A Osborne
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Lucio Miele
- Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, LA, USA. .,Stanley S. Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, LA, USA.
| |
Collapse
|
19
|
Chen Y, Guo Y, Chen H, Ma F. Long Non-coding RNA Expression Profiling Identifies a Four-Long Non-coding RNA Prognostic Signature for Isocitrate Dehydrogenase Mutant Glioma. Front Neurol 2020; 11:573264. [PMID: 33329315 PMCID: PMC7714930 DOI: 10.3389/fneur.2020.573264] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 10/05/2020] [Indexed: 12/13/2022] Open
Abstract
Background: Isocitrate dehydrogenase (IDH) mutant is one of the most robust and important genetic aberrations in glioma. However, the underlying regulation mechanism of long non-coding RNA (lncRNA) in IDH mutant glioma has not been systematically portrayed. Methods:In this work, 775 IDH mutant glioma samples with transcriptome data, including 167 samples from the Chinese Glioma Genome Atlas (CGGA) RNAseq dataset, 390 samples from The Cancer Genome Atlas (TCGA) dataset, 79 samples from GSE16011 dataset, and 139 samples from CGGA microarray dataset, were enrolled. R language and GraphPad Prism software were applied for the statistical analysis and graphical work. Results: By comparing the differentially lncRNA genes between IDH mutant and IDH wild-type glioma samples, a four-lncRNA (JAG1, PVT1, H19, and HAR1A) signature was identified in IDH mutant glioma patients. The signature model was established based on the expression level and the regression coefficient of the four lncRNA genes. IDH mutant glioma samples could be successfully stratified into low-risk and high-risk groups in CGGA RNAseq, TCGA, GSE16011, and CGGA microarray databases. Meanwhile, multivariate Cox analysis showed that the four-lncRNA signature was an independent prognostic biomarker after adjusting for other clinicopathologic factors. Moreover, the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses revealed that the immune response and cellular metabolism were significantly associated with the four-lncRNA risk signature. Conclusion: Taken together, the four-lncRNA risk signature was identified as a novel prognostic marker for IDH mutant glioma patients and may potentially lead to improvements in the lives of glioma patients.
Collapse
Affiliation(s)
- Yusheng Chen
- Department of Neurosurgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Yang Guo
- Department of Neurosurgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Hang Chen
- Department of Neurosurgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Fengjin Ma
- Department of Intensive Care Unit, The Third People's Hospital of Zhengzhou, Zhengzhou, China
| |
Collapse
|
20
|
Unravelling of Hidden Secrets: The Tumour Suppressor Lethal (2) Giant Discs (Lgd)/CC2D1, Notch Signalling and Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1287:31-46. [PMID: 33034024 DOI: 10.1007/978-3-030-55031-8_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The endosomal pathway plays a pivotal role upon signal transduction in the Notch pathway. Recent work on lethal (2) giant discs (lgd) points to an additional critical role in avoiding uncontrolled ligand-independent signalling during trafficking of the Notch receptor through the endosomal pathway to the lysosome for degradation. In this chapter, we will outline the journey of Notch through the endosomal system and present an overview of the current knowledge about Lgd and its mammalian orthologs Lgd1/CC2D1b and Lgd2/CC2D1a. We will then discuss how Notch is activated in the absence of lgd function in Drosophila and ask whether there is evidence that a similar ligand-independent activation of the Notch pathway can also happen in mammals if the orthologs are inactivated.
Collapse
|
21
|
Lomelí H, Castillo-Castellanos F. Notch signaling and the emergence of hematopoietic stem cells. Dev Dyn 2020; 249:1302-1317. [PMID: 32996661 DOI: 10.1002/dvdy.230] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 12/15/2022] Open
Abstract
The hematopoietic stem cell (HSC) is able to give rise to all blood cell lineages in vertebrates. HSCs are generated in the early embryo after two precedent waves of primitive hematopoiesis. Canonical Notch signaling is at the center of the complex mechanism that controls the development of the definitive HSC. The successful in vitro generation of hematopoietic cells from pluripotent stem cells with the capacity for multilineage hematopoietic reconstitution after transplantation requires the recapitulation of the most important process that takes place in the hemogenic endothelium during definitive hematopoiesis, that is the endothelial-to-hematopoietic transition (EHT). To meet this challenge, it is necessary to thoroughly understand the molecular mechanisms that modulate Notch signaling during the HSC differentiation process considering different temporal and spatial dimensions. In recent years, there have been important advances in this field. Here, we review relevant contributions describing different genes, factors, environmental cues, and signaling cascades that regulate the EHT through Notch interactions at multiple levels. The evolutionary conservation of the hematopoietic program has made possible the use of diverse model systems. We describe the contributions of the zebrafish model and the most relevant ones from transgenic mouse studies and from in vitro differentiated pluripotent cells.
Collapse
Affiliation(s)
- Hilda Lomelí
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, 62210, Mexico
| | - Francisco Castillo-Castellanos
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, 62210, Mexico
| |
Collapse
|
22
|
Abstract
Asymmetric cell division (ACD) is an evolutionarily conserved mechanism used by prokaryotes and eukaryotes alike to control cell fate and generate cell diversity. A detailed mechanistic understanding of ACD is therefore necessary to understand cell fate decisions in health and disease. ACD can be manifested in the biased segregation of macromolecules, the differential partitioning of cell organelles, or differences in sibling cell size or shape. These events are usually preceded by and influenced by symmetry breaking events and cell polarization. In this Review, we focus predominantly on cell intrinsic mechanisms and their contribution to cell polarization, ACD and binary cell fate decisions. We discuss examples of polarized systems and detail how polarization is established and, whenever possible, how it contributes to ACD. Established and emerging model organisms will be considered alike, illuminating both well-documented and underexplored forms of polarization and ACD.
Collapse
Affiliation(s)
- Bharath Sunchu
- Department of Biology, University of Washington, Life Science Building, Seattle, WA 98195, USA
| | - Clemens Cabernard
- Department of Biology, University of Washington, Life Science Building, Seattle, WA 98195, USA
| |
Collapse
|
23
|
The oncogenic role of Jagged1/Notch signaling in cancer. Biomed Pharmacother 2020; 129:110416. [PMID: 32593969 DOI: 10.1016/j.biopha.2020.110416] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/12/2020] [Accepted: 06/13/2020] [Indexed: 12/14/2022] Open
Abstract
Aberrant activation of Notch signaling plays an oncogenic role in cancer development. Jagged1 (JAG1) is an important Notch ligand that triggers Notch signaling through cell-cell interactions. JAG1 overexpression has been reported in many different types of cancer and correlates with a poor clinical prognosis. JAG1/Notch signaling controls oncogenic processes in different cell types and cellular contexts. Furthermore, JAG1/Notch signaling cascades activate a number of oncogenic factors that regulate cellular functions such as proliferation, metastasis, drug-resistance, and angiogenesis. To suppress the severe toxicity of pan-Notch inhibitors, JAG1 is attracting increasing attention as a source of therapeutic targets for cancers. In this review, the oncogenic role of JAG1/Notch signaling in cancer is discussed, as well as implications of strategies to inhibit JAG1/Notch signaling activity.
Collapse
|
24
|
Hirano KI, Suganami A, Tamura Y, Yagita H, Habu S, Kitagawa M, Sato T, Hozumi K. Delta-like 1 and Delta-like 4 differently require their extracellular domains for triggering Notch signaling in mice. eLife 2020; 9:50979. [PMID: 31934853 PMCID: PMC6986876 DOI: 10.7554/elife.50979] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 01/09/2020] [Indexed: 12/13/2022] Open
Abstract
Delta-like (Dll) 1 and Dll4 differently function as Notch ligands in a context-dependent manner. As these ligands share structural properties, the molecular basis for their functional difference is poorly understood. Here, we investigated the superiority of Dll4 over Dll1 with respect to induction of T cell development using a domain-swapping approach in mice. The DOS motif, shared by Notch ligands-except Dll4-contributes to enhancing the activity of Dll for signal transduction. The module at the N-terminus of Notch ligand (MNNL) of Dll4 is inherently advantageous over Dll1. Molecular dynamic simulation revealed that the loop structure in MNNL domain of Dll1 contains unique proline residues with limited range of motion. The Dll4 mutant with Dll1-derived proline residues showed reduced activity. These results suggest that the loop structure-present within the MNNL domain-with a wide range of motion ensures the superiority of Dll4 and uniquely contributes to the triggering of Notch signaling.
Collapse
Affiliation(s)
- Ken-Ichi Hirano
- Department of Immunology, Tokai University School of Medicine, Isehara, Japan
| | - Akiko Suganami
- Department of Bioinformatics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yutaka Tamura
- Department of Bioinformatics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hideo Yagita
- Department of Immunology, Juntendo University School of Medicine, Tokyo, Japan
| | - Sonoko Habu
- Department of Immunology, Juntendo University School of Medicine, Tokyo, Japan
| | - Motoo Kitagawa
- Department of Biochemistry, International University of Health and Welfare School of Medicine, Narita, Japan
| | - Takehito Sato
- Department of Immunology, Tokai University School of Medicine, Isehara, Japan
| | - Katsuto Hozumi
- Department of Immunology, Tokai University School of Medicine, Isehara, Japan
| |
Collapse
|
25
|
Ligand-Induced Cis-Inhibition of Notch Signaling: The Role of an Extracellular Region of Serrate. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1227:29-49. [PMID: 32072497 DOI: 10.1007/978-3-030-36422-9_3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cellular development can be controlled by communication between adjacent cells mediated by the highly conserved Notch signaling system. A cell expressing the Notch receptor on one cell can be activated in trans by ligands on an adjacent cell leading to alteration of transcription and cellular fate. Ligands also have the ability to inhibit Notch signaling, and this can be accomplished when both receptor and ligands are coexpressed in cis on the same cell. The manner in which cis-inhibition is accomplished is not entirely clear but it is known to involve several different protein domains of the ligands and the receptor. Some of the protein domains involved in trans-activation are also used for cis-inhibition, but some are used uniquely for each process. In this work, the involvement of various ligand regions and the receptor are discussed in relation to their contributions to Notch signaling.
Collapse
|
26
|
Liberman A, Mussel M, Kario D, Sprinzak D, Nevo U. Modelling cell surface dynamics and cell-cell interactions using Cell Studio: a three-dimensional visualization tool based on gaming technology. J R Soc Interface 2019; 16:20190264. [PMID: 31771451 DOI: 10.1098/rsif.2019.0264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Predictive modelling of complex biological systems and biophysical interactions requires the inclusion of multiple nano- and micro-scale events. In many scenarios, however, numerical solutions alone do not necessarily enhance the understanding of the system. Instead, this work explores the use of an agent-based model with visualization capabilities to elucidate interactions between single cells. We present a model of juxtacrine signalling, using Cell Studio, an agent-based modelling system, based on gaming and three-dimensional visualization tools. The main advantages of the system are its ability to apply any cell geometry and to dynamically visualize the diffusion and interactions of the molecules within the cells in real time. These provide an excellent tool for obtaining insight about different biological scenarios, as the user may view the dynamics of a system and observe its emergent behaviour as it unfolds. The agent-based model was validated against the results of a mean-field model of Notch receptors and ligands in two neighbouring cells. The conversion to an agent-based model is described in detail. To demonstrate the advantages of the model, we further created a filopodium-mediated signalling model. Our model revealed that diffusion and endocytosis alone are insufficient to produce significant signalling in a filopodia scenario. This is due to the bottleneck at the cell-filopodium contact region and the long distance to the end of the filopodium. However, allowing active transport of ligands into filopodia enhances the signalling significantly compared with a face-to-face scenario. We conclude that the agent-based approach can provide insights into mechanisms underlying cell signalling. The open-source model can be found in the Internet hosting service GitHub.
Collapse
Affiliation(s)
- Asaf Liberman
- The Department of Biomedical Engineering, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
| | - Matan Mussel
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Danny Kario
- The Department of Biomedical Engineering, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - David Sprinzak
- The Department of Biochemistry and Molecular Biology, Wise Faculty of Life Science, Tel Aviv University, Tel Aviv, Israel
| | - Uri Nevo
- The Department of Biomedical Engineering, The Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| |
Collapse
|
27
|
Dho SE, Silva-Gagliardi N, Morgese F, Coyaud E, Lamoureux E, Berry DM, Raught B, McGlade CJ. Proximity interactions of the ubiquitin ligase Mind bomb 1 reveal a role in regulation of epithelial polarity complex proteins. Sci Rep 2019; 9:12471. [PMID: 31462741 PMCID: PMC6713736 DOI: 10.1038/s41598-019-48902-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 08/14/2019] [Indexed: 02/07/2023] Open
Abstract
MIB1 belongs to the RING domain containing family of E3 ubiquitin ligases. In vertebrates, MIB1 plays an essential role in activation of Notch signaling during development, through the ubiquitination and endocytosis of Notch ligands. More recently, Notch independent functions for MIB1 have been described in centriole homeostasis, dendritic spine outgrowth and directional cell migration. Here we use proximity-dependent biotin identification (BioID) to define the MIB1 interactome that included 163 high confidence interactions with polypeptides linked to centrosomes and cilia, endosomal trafficking, RNA and DNA processing, the ubiquitin system, and cell adhesion. Biochemical analysis identified several proteins within these groups including CCDC14 and EPS15 that were ubiquitinated but not degraded when co-expressed with MIB1. The MIB1 interactome included the epithelial cell polarity protein, EPB41L5. MIB1 binds to and ubiquitinates EPB41L5 resulting in its degradation. Furthermore, MIB1 ubiquitinates the EPB41L5-associated polarity protein CRB1, an important determinant of the apical membrane. In polarized cells, MIB1 localized to the lateral membrane with EPB41L5 and to the tight junction with CRB1, CRB3 and ZO1. Furthermore, over expression of MIB1 resulted in altered epithelial cell morphology and apical membrane expansion. These results support a role for MIB1 in regulation of polarized epithelial cell morphology.
Collapse
Affiliation(s)
- Sascha E Dho
- Program in Cell Biology and The Arthur and Sonia Brain Tumour Research Centre, The Hospital for Sick Children, 555 University Ave., Toronto, ON, M5G 1X8, Canada
| | - Nancy Silva-Gagliardi
- Program in Cell Biology and The Arthur and Sonia Brain Tumour Research Centre, The Hospital for Sick Children, 555 University Ave., Toronto, ON, M5G 1X8, Canada
| | - Fabio Morgese
- Program in Cell Biology and The Arthur and Sonia Brain Tumour Research Centre, The Hospital for Sick Children, 555 University Ave., Toronto, ON, M5G 1X8, Canada
| | - Etienne Coyaud
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, M5G 1L7, Canada
| | - Emily Lamoureux
- Program in Cell Biology and The Arthur and Sonia Brain Tumour Research Centre, The Hospital for Sick Children, 555 University Ave., Toronto, ON, M5G 1X8, Canada
| | - Donna M Berry
- Program in Cell Biology and The Arthur and Sonia Brain Tumour Research Centre, The Hospital for Sick Children, 555 University Ave., Toronto, ON, M5G 1X8, Canada
| | - Brian Raught
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, M5G 1L7, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - C Jane McGlade
- Program in Cell Biology and The Arthur and Sonia Brain Tumour Research Centre, The Hospital for Sick Children, 555 University Ave., Toronto, ON, M5G 1X8, Canada. .,Department of Medical Biophysics, University of Toronto, Toronto, Canada.
| |
Collapse
|
28
|
Antfolk D, Antila C, Kemppainen K, Landor SKJ, Sahlgren C. Decoding the PTM-switchboard of Notch. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1866:118507. [PMID: 31301363 PMCID: PMC7116576 DOI: 10.1016/j.bbamcr.2019.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 07/03/2019] [Accepted: 07/06/2019] [Indexed: 01/08/2023]
Abstract
The developmentally indispensable Notch pathway exhibits a high grade of pleiotropism in its biological output. Emerging evidence supports the notion of post-translational modifications (PTMs) as a modus operandi controlling dynamic fine-tuning of Notch activity. Although, the intricacy of Notch post-translational regulation, as well as how these modifications lead to multiples of divergent Notch phenotypes is still largely unknown, numerous studies show a correlation between the site of modification and the output. These include glycosylation of the extracellular domain of Notch modulating ligand binding, and phosphorylation of the PEST domain controlling half-life of the intracellular domain of Notch. Furthermore, several reports show that multiple PTMs can act in concert, or compete for the same sites to drive opposite outputs. However, further investigation of the complex PTM crosstalk is required for a complete understanding of the PTM-mediated Notch switchboard. In this review, we aim to provide a consistent and up-to-date summary of the currently known PTMs acting on the Notch signaling pathway, their functions in different contexts, as well as explore their implications in physiology and disease. Furthermore, we give an overview of the present state of PTM research methodology, and allude to a future with PTM-targeted Notch therapeutics.
Collapse
Affiliation(s)
- Daniel Antfolk
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland
| | - Christian Antila
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland
| | - Kati Kemppainen
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland
| | - Sebastian K-J Landor
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland.
| | - Cecilia Sahlgren
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, Turku, Finland; Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands.
| |
Collapse
|
29
|
Liu P, Verhaar AP, Peppelenbosch MP. Signaling Size: Ankyrin and SOCS Box-Containing ASB E3 Ligases in Action. Trends Biochem Sci 2018; 44:64-74. [PMID: 30446376 DOI: 10.1016/j.tibs.2018.10.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 10/09/2018] [Accepted: 10/15/2018] [Indexed: 12/14/2022]
Abstract
Ankyrin repeat and suppressor of cytokine signaling (SOCS) box (Asb) proteins are ubiquitin E3 ligases. The subfamily of six-ankyrin repeat domain-containing Asb proteins (Asb5, Asb9, Asb11, and Asb13) is of specific interest because they display unusual strong evolutionary conservation (e.g., urochordate and human ASB11 are >49% similar at the amino acid level) and mediate compartment size expansion, regulating, for instance, the size of the brain and muscle compartment. Thus, they may be involved in the explanation of the differences in brain size between humans and apes. Mechanistically, many questions remain, but it has become clear that regulation of canonical Notch signaling and also mitochondrial function are important effectors. Here, we review the action and function of six ankyrin repeat domain-containing Asb proteins in physiology and pathophysiology.
Collapse
Affiliation(s)
- Pengyu Liu
- Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Auke P Verhaar
- Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
| |
Collapse
|
30
|
Secco I, Barile L, Torrini C, Zentilin L, Vassalli G, Giacca M, Collesi C. Notch pathway activation enhances cardiosphere in vitro expansion. J Cell Mol Med 2018; 22:5583-5595. [PMID: 30138533 PMCID: PMC6201224 DOI: 10.1111/jcmm.13832] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/08/2018] [Accepted: 06/30/2018] [Indexed: 11/26/2022] Open
Abstract
Cardiospheres (CSps) are self‐assembling clusters of a heterogeneous population of poorly differentiated cells outgrowing from in vitro cultured cardiac explants. Scanty information is available on the molecular pathways regulating CSp growth and their differentiation potential towards cardiac and vascular lineages. Here we report that Notch1 stimulates a massive increase in both CSp number and size, inducing a peculiar gene expression programme leading to a cardiovascular molecular signature. These effects were further enhanced using Adeno‐Associated Virus (AAV)‐based gene transfer of activated Notch1‐intracellular domain (N1‐ICD) or soluble‐Jagged1 (sJ1) ligand to CSp‐forming cells. A peculiar effect was exploited by selected pro‐proliferating miRNAs: hsa‐miR‐590‐3p induced a cardiovascular gene expression programme, while hsa‐miR‐199a‐3p acted as the most potent stimulus for the activation of the Notch pathway, thus showing that, unlike in adult cardiomyocytes, these miRNAs involve Notch signalling activation in CSps. Our results identify Notch1 as a crucial regulator of CSp growth and differentiation along the vascular lineage, raising the attracting possibility that forced activation of this pathway might be exploited to promote in vitro CSp expansion as a tool for toxicology screening and cell‐free therapeutic strategies.
Collapse
Affiliation(s)
- Ilaria Secco
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Lucio Barile
- Fondazione Cardiocentro Ticino and Swiss Institute for Regenerative Medicine, Lugano, Switzerland
| | - Consuelo Torrini
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Lorena Zentilin
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Giuseppe Vassalli
- Fondazione Cardiocentro Ticino and Swiss Institute for Regenerative Medicine, Lugano, Switzerland
| | - Mauro Giacca
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy.,Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Chiara Collesi
- Molecular Medicine Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy.,Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| |
Collapse
|
31
|
Mendoza-Ortíz MA, Murillo-Maldonado JM, Riesgo-Escovar JR. aaquetzalli is required for epithelial cell polarity and neural tissue formation in Drosophila. PeerJ 2018; 6:e5042. [PMID: 29942698 PMCID: PMC6015755 DOI: 10.7717/peerj.5042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 05/31/2018] [Indexed: 01/30/2023] Open
Abstract
Morphogenetic movements during embryogenesis require dynamic changes in epithelial cell polarity and cytoskeletal reorganization. Such changes involve, among others, rearrangements of cell-cell contacts and protein traffic. In Drosophila melanogaster, neuroblast delamination during early neurogenesis is a well-characterized process requiring a polarized neuroepithelium, regulated by the Notch signaling pathway. Maintenance of epithelial cell polarity ensues proper Notch pathway activation during neurogenesis. We characterize here aaquetzalli (aqz), a gene whose mutations affect cell polarity and nervous system specification. The aqz locus encodes a protein that harbors a domain with significant homology to a proline-rich conserved domain of nuclear receptor co-activators. aqz expression occurs at all stages of the fly life cycle, and is dynamic. aqz mutants are lethal, showing a disruption of cell polarity during embryonic ventral neuroepithelium differentiation resulting in loss of epithelial integrity and mislocalization of membrane proteins (shown by mislocalization of Crumbs, DE-Cadherin, and Delta). As a consequence, aqz mutant embryos with compromised apical-basal cell polarity develop spotty changes of neuronal and epithelial numbers of cells.
Collapse
Affiliation(s)
- Miguel A Mendoza-Ortíz
- Developmental Neurobiology and Neurophysiology, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
| | - Juan M Murillo-Maldonado
- Developmental Neurobiology and Neurophysiology, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
| | - Juan R Riesgo-Escovar
- Developmental Neurobiology and Neurophysiology, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
| |
Collapse
|
32
|
Shah D, Wyatt D, Baker AT, Simms P, Peiffer DS, Fernandez M, Rakha E, Green A, Filipovic A, Miele L, Osipo C. Inhibition of HER2 Increases JAGGED1-dependent Breast Cancer Stem Cells: Role for Membrane JAGGED1. Clin Cancer Res 2018; 24:4566-4578. [PMID: 29895705 DOI: 10.1158/1078-0432.ccr-17-1952] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 04/19/2018] [Accepted: 06/04/2018] [Indexed: 12/21/2022]
Abstract
Purpose: HER2-positive breast cancer is driven by cells possessing stem-like properties of self-renewal and differentiation, referred to as cancer stem cells (CSC). CSCs are implicated in radiotherapy, chemotherapy resistance, and tumor recurrence. NOTCH promotes breast CSC survival and self-renewal, and overexpression of NOTCH1 and the NOTCH ligand JAGGED1 predict poor outcome. Resistance to anti-HER2 therapy in HER2+ breast cancer requires NOTCH1, and that combination of trastuzumab and a gamma secretase inhibitor (GSI) prevents tumor relapse in xenograft models.Experimental Design: The current study investigates mechanisms by which HER2 tyrosine kinase activity regulates NOTCH-dependent CSC survival and tumor initiation.Results: Lapatinib-mediated HER2 inhibition shifts the population of HER2+ breast cancer cells from low membrane JAGGED1 expression to higher levels, independent of sensitivity to anti-HER2 treatment within the bulk cell population. This increase in membrane JAGGED1 is associated with higher NOTCH receptor expression, activation, and enrichment of CSCs in vitro and in vivo Importantly, lapatinib treatment results in growth arrest and cell death of JAGGED1 low-expressing cells while the JAGGED1 high-expressing cells continue to cycle. High membrane JAGGED1 protein expression predicts poor overall cumulative survival in women with HER2+ breast cancer.Conclusions: These results indicate that higher membrane JAGGED1 expression may be used to either predict response to anti-HER2 therapy or for detection of NOTCH-sensitive CSCs posttherapy. Sequential blockade of HER2 followed by JAGGED1 or NOTCH could be more effective than simultaneous blockade to prevent drug resistance and tumor progression. Clin Cancer Res; 24(18); 4566-78. ©2018 AACR.
Collapse
Affiliation(s)
- Deep Shah
- Molecular Pharmacology and Therapeutics Program, Loyola University Chicago: Health Sciences Division, Maywood, Illinois
| | - Debra Wyatt
- Oncology Research Institute, Loyola University Chicago: Health Sciences Division, Maywood, Illinois
| | - Andrew T Baker
- Integrated Cell Biology Program, Loyola University Chicago: Health Sciences Division, Maywood, Illinois
| | - Patricia Simms
- FACS Core Facility, Office of Research Services, Loyola University Chicago: Health Sciences Division, Maywood, Illinois
| | - Daniel S Peiffer
- Integrated Cell Biology Program, Loyola University Chicago: Health Sciences Division, Maywood, Illinois.,MD/PhD Program, Loyola University Chicago: Health Sciences Division, Maywood, Illinois
| | - Michelle Fernandez
- Department of Microbiology and Immunology, Loyola University Chicago: Health Sciences Division, Maywood, Illinois
| | - Emad Rakha
- Departments of Histopathology and Medicine, University of Nottingham and University Hospital NHS Trust, Nottingham, United Kingdom
| | - Andrew Green
- Departments of Histopathology and Medicine, University of Nottingham and University Hospital NHS Trust, Nottingham, United Kingdom
| | | | - Lucio Miele
- Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Los Angeles
| | - Clodia Osipo
- Oncology Research Institute, Loyola University Chicago: Health Sciences Division, Maywood, Illinois. .,Department of Microbiology and Immunology, Loyola University Chicago: Health Sciences Division, Maywood, Illinois
| |
Collapse
|
33
|
Yatsenko AS, Shcherbata HR. Stereotypical architecture of the stem cell niche is spatiotemporally established by miR-125-dependent coordination of Notch and steroid signaling. Development 2018; 145:dev.159178. [PMID: 29361571 PMCID: PMC5818007 DOI: 10.1242/dev.159178] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 01/15/2018] [Indexed: 12/15/2022]
Abstract
Stem cell niches act as signaling platforms that regulate stem cell self-renewal and sustain stem cells throughout life; however, the specific developmental events controlling their assembly are not well understood. Here, we show that during Drosophila ovarian germline stem cell niche formation, the status of Notch signaling in the cell can be reprogrammed. This is controlled via steroid-induced miR-125, which targets a negative regulator of Notch signaling, Tom. Thus, miR-125 acts as a spatiotemporal coordinator between paracrine Notch and endocrine steroid signaling. Moreover, a dual security mechanism for Notch signaling activation exists to ensure the robustness of niche assembly. Particularly, stem cell niche cells can be specified either via lateral inhibition, in which a niche cell precursor acquires Notch signal-sending status randomly, or via peripheral induction, whereby Delta is produced by a specific cell. When one mechanism is perturbed due to mutations, developmental defects or environmental stress, the remaining mechanism ensures that the niche is formed, perhaps abnormally, but still functional. This guarantees that the germline stem cells will have their residence, thereby securing progressive oogenesis and, thus, organism reproduction. Highlighted Article: In Drosophila, the robustness of stem cell niche assembly is safeguarded via a dual mechanism of Notch activation. Cellular Notch status can be reprogrammed by miR-125, which spatiotemporally coordinates paracrine and endocrine signaling.
Collapse
Affiliation(s)
- Andriy S Yatsenko
- Max Planck Research Group of Gene Expression and Signaling, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
| | - Halyna R Shcherbata
- Max Planck Research Group of Gene Expression and Signaling, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
| |
Collapse
|
34
|
Nandagopal N, Santat LA, LeBon L, Sprinzak D, Bronner ME, Elowitz MB. Dynamic Ligand Discrimination in the Notch Signaling Pathway. Cell 2018; 172:869-880.e19. [PMID: 29398116 PMCID: PMC6414217 DOI: 10.1016/j.cell.2018.01.002] [Citation(s) in RCA: 200] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 08/10/2017] [Accepted: 01/03/2018] [Indexed: 01/08/2023]
Abstract
The Notch signaling pathway comprises multiple ligands that are used in distinct biological contexts. In principle, different ligands could activate distinct target programs in signal-receiving cells, but it is unclear how such ligand discrimination could occur. Here, we show that cells use dynamics to discriminate signaling by the ligands Dll1 and Dll4 through the Notch1 receptor. Quantitative single-cell imaging revealed that Dll1 activates Notch1 in discrete, frequency-modulated pulses that specifically upregulate the Notch target gene Hes1. By contrast, Dll4 activates Notch1 in a sustained, amplitude-modulated manner that predominantly upregulates Hey1 and HeyL. Ectopic expression of Dll1 or Dll4 in chick neural crest produced opposite effects on myogenic differentiation, showing that ligand discrimination can occur in vivo. Finally, analysis of chimeric ligands suggests that ligand-receptor clustering underlies dynamic encoding of ligand identity. The ability of the pathway to utilize ligands as distinct communication channels has implications for diverse Notch-dependent processes.
Collapse
Affiliation(s)
- Nagarajan Nandagopal
- Howard Hughes Medical Institute and Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Leah A Santat
- Howard Hughes Medical Institute and Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Lauren LeBon
- Calico Life Sciences, 1170 Veterans Boulevard, South San Francisco, CA 94080, USA
| | - David Sprinzak
- Department of Biochemistry and Molecular Biology, Wise Faculty of Life Sciences, Tel-Aviv University, Tel Aviv, Israel
| | - Marianne E Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Michael B Elowitz
- Howard Hughes Medical Institute, Division of Biology and Biological Engineering, Department of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA.
| |
Collapse
|
35
|
Salazar JL, Yamamoto S. Integration of Drosophila and Human Genetics to Understand Notch Signaling Related Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1066:141-185. [PMID: 30030826 PMCID: PMC6233323 DOI: 10.1007/978-3-319-89512-3_8] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Notch signaling research dates back to more than one hundred years, beginning with the identification of the Notch mutant in the fruit fly Drosophila melanogaster. Since then, research on Notch and related genes in flies has laid the foundation of what we now know as the Notch signaling pathway. In the 1990s, basic biological and biochemical studies of Notch signaling components in mammalian systems, as well as identification of rare mutations in Notch signaling pathway genes in human patients with rare Mendelian diseases or cancer, increased the significance of this pathway in human biology and medicine. In the 21st century, Drosophila and other genetic model organisms continue to play a leading role in understanding basic Notch biology. Furthermore, these model organisms can be used in a translational manner to study underlying mechanisms of Notch-related human diseases and to investigate the function of novel disease associated genes and variants. In this chapter, we first briefly review the major contributions of Drosophila to Notch signaling research, discussing the similarities and differences between the fly and human pathways. Next, we introduce several biological contexts in Drosophila in which Notch signaling has been extensively characterized. Finally, we discuss a number of genetic diseases caused by mutations in genes in the Notch signaling pathway in humans and we expand on how Drosophila can be used to study rare genetic variants associated with these and novel disorders. By combining modern genomics and state-of-the art technologies, Drosophila research is continuing to reveal exciting biology that sheds light onto mechanisms of disease.
Collapse
Affiliation(s)
- Jose L Salazar
- Department of Molecular and Human Genetics, Baylor College of Medicine (BCM), Houston, TX, USA
| | - Shinya Yamamoto
- Department of Molecular and Human Genetics, Baylor College of Medicine (BCM), Houston, TX, USA.
- Program in Developmental Biology, BCM, Houston, TX, USA.
- Department of Neuroscience, BCM, Houston, TX, USA.
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA.
| |
Collapse
|
36
|
Kanungo J, Goswami MT, Pant HC. Notch and Cdk5 in Zebrafish Mindbomb Mutant: Co-regulation or Coincidence? Folia Biol (Praha) 2018; 64:35-40. [PMID: 30338754 PMCID: PMC6196738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Notch signalling is critical for the development of the nervous system. In the zebrafish mindbomb mutants, disruption of E3 ubiquitin ligase activity inhibits Notch signalling. In these mutant embryos, precocious development of primary neurons leading to depletion of neural progenitor cells results in a neurogenic phenotype characterized by defects in neural patterning and brain development. Cyclin-dependent kinase 5 (Cdk5), a predominant neuronal kinase, is involved in a variety of essential functions of the nervous system. Most recently, mammalian studies on Notch and Cdk5 regulating each other's function have been emerging. The status of Cdk5 in the mindbomb mutant embryos with excessive primary neurons is not known. In situ hybridization of the zebrafish mindbomb mutant embryos uncovered a robust upregulation in Cdk5 expression but with a reduced Cdk5 activity. The implications of these findings in both the mammalian system and zebrafish are discussed in this mini-review to provide a glimpse into the relationship between Notch and Cdk5 that may explain certain neurodevelopmental defects associated with either mutations in ubiquitin ligase or altered expression of Cdk5.
Collapse
Affiliation(s)
- J Kanungo
- Division of Neurotoxicology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, USA
- National Institute of Neuronal Disorders and Stroke, National Institute of Health, Bethesda, MD, USA
| | - M T Goswami
- National Institute of Children's Health and Development, National Institute of Health, Bethesda, MD, USA
| | - H C Pant
- National Institute of Neuronal Disorders and Stroke, National Institute of Health, Bethesda, MD, USA
| |
Collapse
|
37
|
Epsin-Dependent Ligand Endocytosis Activates Notch by Force. Cell 2017; 171:1383-1396.e12. [PMID: 29195077 DOI: 10.1016/j.cell.2017.10.048] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 07/30/2017] [Accepted: 09/28/2017] [Indexed: 01/09/2023]
Abstract
DSL ligands activate Notch by inducing proteolytic cleavage of the receptor ectodomain, an event that requires ligand to be endocytosed in signal-sending cells by the adaptor protein Epsin. Two classes of explanation for this unusual requirement are (1) recycling models, in which the ligand must be endocytosed to be modified or repositioned before it binds Notch and (2) pulling models, in which the ligand must be endocytosed after it binds Notch to exert force that exposes an otherwise buried site for cleavage. We demonstrate in vivo that ligands that cannot enter the Epsin pathway nevertheless bind Notch but fail to activate the receptor because they cannot exert sufficient force. This argues against recycling models and in favor of pulling models. Our results also suggest that once ligand binds receptor, activation depends on a competition between Epsin-mediated ligand endocytosis, which induces cleavage, and transendocytosis of the ligand by the receptor, which aborts the incipient signal.
Collapse
|
38
|
Hussain M, Xu C, Ahmad M, Yang Y, Lu M, Wu X, Tang L, Wu X. Notch Signaling: Linking Embryonic Lung Development and Asthmatic Airway Remodeling. Mol Pharmacol 2017; 92:676-693. [PMID: 29025966 DOI: 10.1124/mol.117.110254] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 10/11/2017] [Indexed: 12/12/2022] Open
Abstract
Lung development is mediated by assorted signaling proteins and orchestrated by complex mesenchymal-epithelial interactions. Notch signaling is an evolutionarily conserved cell-cell communication mechanism that exhibits a pivotal role in lung development. Notably, both aberrant expression and loss of regulation of Notch signaling are critically linked to the pathogenesis of various lung diseases, in particular, pulmonary fibrosis, lung cancer, pulmonary arterial hypertension, and asthmatic airway remodeling; implying that precise regulation of intensity and duration of Notch signaling is imperative for appropriate lung development. Moreover, evidence suggests that Notch signaling links embryonic lung development and asthmatic airway remodeling. Herein, we summarized all-recent advances associated with the mechanistic role of Notch signaling in lung development, consequences of aberrant expression or deletion of Notch signaling in linking early-impaired lung development and asthmatic airway remodeling, and all recently investigated potential therapeutic strategies to treat asthmatic airway remodeling.
Collapse
Affiliation(s)
- Musaddique Hussain
- Department of Pharmacology and The Key Respiratory Drug Research Laboratory of China Food and Drug Administration, School of Medicine, Zhejiang University, Hangzhou City, China (M.H., C.X., M.A., Xim.W.); The Second People's Hospital of Wenling, Wenling City, Zhejiang Province, China (Y.Y.); and Department of Respiratory Medicine, the Affiliated Children Hospital, School of Medicine, Zhejiang University, Hangzhou City, China (M.L., Xil.W., L.T.)
| | - Chengyun Xu
- Department of Pharmacology and The Key Respiratory Drug Research Laboratory of China Food and Drug Administration, School of Medicine, Zhejiang University, Hangzhou City, China (M.H., C.X., M.A., Xim.W.); The Second People's Hospital of Wenling, Wenling City, Zhejiang Province, China (Y.Y.); and Department of Respiratory Medicine, the Affiliated Children Hospital, School of Medicine, Zhejiang University, Hangzhou City, China (M.L., Xil.W., L.T.)
| | - Mashaal Ahmad
- Department of Pharmacology and The Key Respiratory Drug Research Laboratory of China Food and Drug Administration, School of Medicine, Zhejiang University, Hangzhou City, China (M.H., C.X., M.A., Xim.W.); The Second People's Hospital of Wenling, Wenling City, Zhejiang Province, China (Y.Y.); and Department of Respiratory Medicine, the Affiliated Children Hospital, School of Medicine, Zhejiang University, Hangzhou City, China (M.L., Xil.W., L.T.)
| | - Youping Yang
- Department of Pharmacology and The Key Respiratory Drug Research Laboratory of China Food and Drug Administration, School of Medicine, Zhejiang University, Hangzhou City, China (M.H., C.X., M.A., Xim.W.); The Second People's Hospital of Wenling, Wenling City, Zhejiang Province, China (Y.Y.); and Department of Respiratory Medicine, the Affiliated Children Hospital, School of Medicine, Zhejiang University, Hangzhou City, China (M.L., Xil.W., L.T.)
| | - Meiping Lu
- Department of Pharmacology and The Key Respiratory Drug Research Laboratory of China Food and Drug Administration, School of Medicine, Zhejiang University, Hangzhou City, China (M.H., C.X., M.A., Xim.W.); The Second People's Hospital of Wenling, Wenling City, Zhejiang Province, China (Y.Y.); and Department of Respiratory Medicine, the Affiliated Children Hospital, School of Medicine, Zhejiang University, Hangzhou City, China (M.L., Xil.W., L.T.)
| | - Xiling Wu
- Department of Pharmacology and The Key Respiratory Drug Research Laboratory of China Food and Drug Administration, School of Medicine, Zhejiang University, Hangzhou City, China (M.H., C.X., M.A., Xim.W.); The Second People's Hospital of Wenling, Wenling City, Zhejiang Province, China (Y.Y.); and Department of Respiratory Medicine, the Affiliated Children Hospital, School of Medicine, Zhejiang University, Hangzhou City, China (M.L., Xil.W., L.T.)
| | - Lanfang Tang
- Department of Pharmacology and The Key Respiratory Drug Research Laboratory of China Food and Drug Administration, School of Medicine, Zhejiang University, Hangzhou City, China (M.H., C.X., M.A., Xim.W.); The Second People's Hospital of Wenling, Wenling City, Zhejiang Province, China (Y.Y.); and Department of Respiratory Medicine, the Affiliated Children Hospital, School of Medicine, Zhejiang University, Hangzhou City, China (M.L., Xil.W., L.T.)
| | - Ximei Wu
- Department of Pharmacology and The Key Respiratory Drug Research Laboratory of China Food and Drug Administration, School of Medicine, Zhejiang University, Hangzhou City, China (M.H., C.X., M.A., Xim.W.); The Second People's Hospital of Wenling, Wenling City, Zhejiang Province, China (Y.Y.); and Department of Respiratory Medicine, the Affiliated Children Hospital, School of Medicine, Zhejiang University, Hangzhou City, China (M.L., Xil.W., L.T.)
| |
Collapse
|
39
|
Berndt N, Seib E, Kim S, Troost T, Lyga M, Langenbach J, Haensch S, Kalodimou K, Delidakis C, Klein T. Ubiquitylation-independent activation of Notch signalling by Delta. eLife 2017; 6:27346. [PMID: 28960177 PMCID: PMC5675594 DOI: 10.7554/elife.27346] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 09/28/2017] [Indexed: 12/29/2022] Open
Abstract
Ubiquitylation (ubi) by the E3-ligases Mindbomb1 (Mib1) and Neuralized (Neur) is required for activation of the DSL ligands Delta (Dl) and Serrate (Ser) to activate Notch signalling. These ligases transfer ubiquitin to lysines of the ligands' intracellular domains (ICDs), which sends them into an Epsin-dependent endocytic pathway. Here, we have tested the requirement of ubi of Dl for signalling. We found that Dl requires ubi for its full function, but can also signal in two ubi-independent modes, one dependent and one independent of Neur. We identified two neural lateral specification processes where Dl signals in an ubi-independent manner. Neur, which is needed for these processes, was shown to be able to activate Dl in an ubi-independent manner. Our analysis suggests that one important role of DSL protein ubi by Mib1 is their release from cis-inhibitory interactions with Notch, enabling them to trans-activate Notch on adjacent cells.
Collapse
Affiliation(s)
- Nicole Berndt
- Institute of Genetics, Heinrich-Heine-Universitaet Duesseldorf, Duesseldorf, Germany
| | - Ekaterina Seib
- Institute of Genetics, Heinrich-Heine-Universitaet Duesseldorf, Duesseldorf, Germany
| | - Soya Kim
- Institute of Genetics, Heinrich-Heine-Universitaet Duesseldorf, Duesseldorf, Germany.,Molekulare Zellbiologie, Institut I für Anatomie, Uniklinik Köln, Universität zu Köln, Köln, Germany
| | - Tobias Troost
- Institute of Genetics, Heinrich-Heine-Universitaet Duesseldorf, Duesseldorf, Germany
| | - Marvin Lyga
- Institute of Genetics, Heinrich-Heine-Universitaet Duesseldorf, Duesseldorf, Germany
| | - Jessica Langenbach
- Institute of Genetics, Heinrich-Heine-Universitaet Duesseldorf, Duesseldorf, Germany
| | - Sebastian Haensch
- Center of Advanced Imaging, Heinrich-Heine-Universitaet Duesseldorf, Duesseldorf, Germany
| | - Konstantina Kalodimou
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology - Hellas, Heraklion, Greece.,Department of Biology, University of Crete, Heraklion, Greece
| | - Christos Delidakis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology - Hellas, Heraklion, Greece.,Department of Biology, University of Crete, Heraklion, Greece
| | - Thomas Klein
- Institute of Genetics, Heinrich-Heine-Universitaet Duesseldorf, Duesseldorf, Germany
| |
Collapse
|
40
|
Perez-Mockus G, Schweisguth F. Cell Polarity and Notch Signaling: Linked by the E3 Ubiquitin Ligase Neuralized? Bioessays 2017; 39. [DOI: 10.1002/bies.201700128] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 08/17/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Gantas Perez-Mockus
- Institut Pasteur,; Dept of Developmental and Stem Cell Biology; F-75015 Paris France
- CNRS; UMR3738; F-75015 Paris France
- Univ. Pierre et Marie Curie; Cellule Pasteur UPMC; rue du Dr Roux 75015 Paris France
| | - Francois Schweisguth
- Institut Pasteur,; Dept of Developmental and Stem Cell Biology; F-75015 Paris France
- CNRS; UMR3738; F-75015 Paris France
| |
Collapse
|
41
|
Bhattacharya A, Li K, Quiquand M, Rimesso G, Baker NE. The Notch pathway regulates the Second Mitotic Wave cell cycle independently of bHLH proteins. Dev Biol 2017; 431:309-320. [PMID: 28919436 DOI: 10.1016/j.ydbio.2017.08.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/08/2017] [Accepted: 08/22/2017] [Indexed: 12/31/2022]
Abstract
Notch regulates both neurogenesis and cell cycle activity to coordinate precursor cell generation in the differentiating Drosophila eye. Mosaic analysis with mitotic clones mutant for Notch components was used to identify the pathway of Notch signaling that regulates the cell cycle in the Second Mitotic Wave. Although S phase entry depends on Notch signaling and on the transcription factor Su(H), the transcriptional co-activator Mam and the bHLH repressor genes of the E(spl)-Complex were not essential, although these are Su(H) coactivators and targets during the regulation of neurogenesis. The Second Mitotic Wave showed little dependence on ubiquitin ligases neuralized or mindbomb, and although the ligand Delta is required non-autonomously, partial cell cycle activity occurred in the absence of known Notch ligands. We found that myc was not essential for the Second Mitotic Wave. The Second Mitotic Wave did not require the HLH protein Extra macrochaetae, and the bHLH protein Daughterless was required only cell-nonautonomously. Similar cell cycle phenotypes for Daughterless and Atonal were consistent with requirement for neuronal differentiation to stimulate Delta expression, affecting Notch activity in the Second Mitotic Wave indirectly. Therefore Notch signaling acts to regulate the Second Mitotic Wave without activating bHLH gene targets.
Collapse
Affiliation(s)
- Abhishek Bhattacharya
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Ke Li
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Manon Quiquand
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Gerard Rimesso
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Nicholas E Baker
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Department of Ophthalmology and Visual Sciences, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA.
| |
Collapse
|
42
|
Intra-lineage Fate Decisions Involve Activation of Notch Receptors Basal to the Midbody in Drosophila Sensory Organ Precursor Cells. Curr Biol 2017; 27:2239-2247.e3. [PMID: 28736165 DOI: 10.1016/j.cub.2017.06.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 06/07/2017] [Accepted: 06/12/2017] [Indexed: 01/27/2023]
Abstract
Notch receptors regulate cell fate decisions during embryogenesis and throughout adult life. In many cell lineages, binary fate decisions are mediated by directional Notch signaling between the two sister cells produced by cell division. How Notch signaling is restricted to sister cells after division to regulate intra-lineage decision is poorly understood. More generally, where ligand-dependent activation of Notch occurs at the cell surface is not known, as methods to detect receptor activation in vivo are lacking. In Drosophila pupae, Notch signals during cytokinesis to regulate the intra-lineage pIIa/pIIb decision in the sensory organ lineage. Here, we identify two pools of Notch along the pIIa-pIIb interface, apical and basal to the midbody. Analysis of the dynamics of Notch, Delta, and Neuralized distribution in living pupae suggests that ligand endocytosis and receptor activation occur basal to the midbody. Using selective photo-bleaching of GFP-tagged Notch and photo-tracking of photo-convertible Notch, we show that nuclear Notch is indeed produced by receptors located basal to the midbody. Thus, only a specific subset of receptors, located basal to the midbody, contributes to signaling in pIIa. This is the first in vivo characterization of the pool of Notch contributing to signaling. We propose a simple mechanism of cell fate decision based on intra-lineage signaling: ligands and receptors localize during cytokinesis to the new cell-cell interface, thereby ensuring signaling between sister cells, hence intra-lineage fate decision.
Collapse
|
43
|
Sapir T, Levy T, Kozer N, Shin I, Zamor V, Haffner-Krausz R, McGlade JC, Reiner O. Notch Activation by Shootin1 Opposing Activities on 2 Ubiquitin Ligases. Cereb Cortex 2017; 28:3115-3128. [DOI: 10.1093/cercor/bhx180] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 06/23/2017] [Indexed: 12/22/2022] Open
Affiliation(s)
- Tamar Sapir
- Department of Molecular Genetics, Weizmann Institute of Science, 234 Herzl St., Rehovot, Israel
| | - Talia Levy
- Department of Molecular Genetics, Weizmann Institute of Science, 234 Herzl St., Rehovot, Israel
| | - Noga Kozer
- Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, 234 Herzl St., Rehovot, Israel
| | - Irina Shin
- Biological Services Unit, Weizmann Institute of Science, 234 Herzl St., Rehovot, Israel
| | - Vanessa Zamor
- Department of Molecular Genetics, Weizmann Institute of Science, 234 Herzl St., Rehovot, Israel
| | - Rebecca Haffner-Krausz
- Department of Veterinary Resources, Weizmann Institute of Science, 234 Herzl St., Rehovot, Israel
| | - Jane C McGlade
- The Arthur and Sonia Labatt Brain Tumour Research Centre and Program in Cell Biology, The Hospital for Sick Children, 555 University Avenue, Toronto, ON,Canada
- Department of Medical Biophysics, University of Toronto, 610 University Avenue, Toronto, ON, Canada
| | - Orly Reiner
- Department of Molecular Genetics, Weizmann Institute of Science, 234 Herzl St., Rehovot, Israel
| |
Collapse
|
44
|
|
45
|
Perez-Mockus G, Roca V, Mazouni K, Schweisguth F. Neuralized regulates Crumbs endocytosis and epithelium morphogenesis via specific Stardust isoforms. J Cell Biol 2017; 216:1405-1420. [PMID: 28400441 PMCID: PMC5412571 DOI: 10.1083/jcb.201611196] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 02/13/2017] [Accepted: 02/23/2017] [Indexed: 11/22/2022] Open
Abstract
The E3 ubiquitin ligase Neuralized is shown to interact with a subset of the Stardust isoforms to regulate the endocytosis of the apical protein Crumbs and thereby promote epithelial remodeling during Drosophila development. Crumbs (Crb) is a conserved determinant of apical membrane identity that regulates epithelial morphogenesis in many developmental contexts. In this study, we identify the Crb complex protein Stardust (Sdt) as a target of the E3 ubiquitin ligase Neuralized (Neur) in Drosophila melanogaster. Neur interacts with and down-regulates specific Sdt isoforms containing a Neur binding motif (NBM). Using a CRISPR (clustered regularly interspaced short palindromic repeats)-induced deletion of the NBM-encoding exon, we found that Sdt is a key Neur target and that Neur acts via Sdt to down-regulate Crb. We further show that Neur promotes the endocytosis of Crb via the NBM-containing isoforms of Sdt. Although the regulation of Crb by Neur is not strictly essential, it contributes to epithelium remodeling in the posterior midgut and thereby facilitates the trans-epithelial migration of the primordial germ cells in early embryos. Thus, our study uncovers a novel regulatory mechanism for the developmental control of Crb-mediated morphogenesis.
Collapse
Affiliation(s)
- Gantas Perez-Mockus
- Department of Developmental and Stem Cell Biology, Institut Pasteur, F-75015 Paris, France.,Centre National de la Recherché Scientifique, UMR3738, F-75015 Paris, France.,Cellule Pasteur, Université Pierre et Marie Curie, F-75015 Paris, France
| | - Vanessa Roca
- Department of Developmental and Stem Cell Biology, Institut Pasteur, F-75015 Paris, France.,Centre National de la Recherché Scientifique, UMR3738, F-75015 Paris, France
| | - Khalil Mazouni
- Department of Developmental and Stem Cell Biology, Institut Pasteur, F-75015 Paris, France.,Centre National de la Recherché Scientifique, UMR3738, F-75015 Paris, France
| | - François Schweisguth
- Department of Developmental and Stem Cell Biology, Institut Pasteur, F-75015 Paris, France .,Centre National de la Recherché Scientifique, UMR3738, F-75015 Paris, France
| |
Collapse
|
46
|
Tozer S, Baek C, Fischer E, Goiame R, Morin X. Differential Routing of Mindbomb1 via Centriolar Satellites Regulates Asymmetric Divisions of Neural Progenitors. Neuron 2017; 93:542-551.e4. [PMID: 28132826 DOI: 10.1016/j.neuron.2016.12.042] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 11/08/2016] [Accepted: 12/29/2016] [Indexed: 01/12/2023]
Abstract
Unequal centrosome maturation correlates with asymmetric division in multiple cell types. Nevertheless, centrosomal fate determinants have yet to be identified. Here, we show that the Notch pathway regulator Mindbomb1 co-localizes asymmetrically with centriolar satellite proteins PCM1 and AZI1 at the daughter centriole in interphase. Remarkably, while PCM1 and AZI1 remain asymmetric during mitosis, Mindbomb1 is associated with either one or both spindle poles. Asymmetric Mindbomb1 correlates with neurogenic divisions and Mindbomb1 is inherited by the prospective neuron. By contrast, in proliferative divisions, a supplementary pool of Mindbomb1 associated with the Golgi apparatus in interphase is released during mitosis and compensates for Mindbomb1 centrosomal asymmetry. Finally, we show that preventing Mindbomb1 centrosomal association induces reciprocal Notch activation between sister cells and promotes symmetric divisions. Thus, we uncover a link between differential centrosome maturation and Notch signaling and reveal an unexpected compensatory mechanism involving the Golgi apparatus in restoring symmetry in proliferative divisions.
Collapse
Affiliation(s)
- Samuel Tozer
- Cell Division and Neurogenesis, Institut de Biologie de l'Ecole Normale Supérieure (IBENS), CNRS, Inserm, Ecole Normale Supérieure, PSL Research University, 75005 Paris, France.
| | - Chooyoung Baek
- Cell Division and Neurogenesis, Institut de Biologie de l'Ecole Normale Supérieure (IBENS), CNRS, Inserm, Ecole Normale Supérieure, PSL Research University, 75005 Paris, France; Sorbonne Universités, UPMC Univ Paris 06, IFD, 4 Place Jussieu, 75252 Paris, France
| | - Evelyne Fischer
- Cell Division and Neurogenesis, Institut de Biologie de l'Ecole Normale Supérieure (IBENS), CNRS, Inserm, Ecole Normale Supérieure, PSL Research University, 75005 Paris, France
| | - Rosette Goiame
- Cell Division and Neurogenesis, Institut de Biologie de l'Ecole Normale Supérieure (IBENS), CNRS, Inserm, Ecole Normale Supérieure, PSL Research University, 75005 Paris, France
| | - Xavier Morin
- Cell Division and Neurogenesis, Institut de Biologie de l'Ecole Normale Supérieure (IBENS), CNRS, Inserm, Ecole Normale Supérieure, PSL Research University, 75005 Paris, France.
| |
Collapse
|
47
|
Izrailit J, Jaiswal A, Zheng W, Moran MF, Reedijk M. Cellular stress induces TRB3/USP9x-dependent Notch activation in cancer. Oncogene 2016; 36:1048-1057. [PMID: 27593927 DOI: 10.1038/onc.2016.276] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 05/29/2016] [Accepted: 06/21/2016] [Indexed: 01/23/2023]
Abstract
Expression of the Notch ligand JAG1 and Notch pathway activation promote poor prognosis, basal-like breast cancer. We have recently shown that the pseudokinase Tribbles homolog 3 (TRB3) regulates JAG1 expression in this malignancy. TRB3 is a stress and metabolic sensor, and here we show that nutrient deprivation or endoplasmic reticulum stress markedly upregulate TRB3, which serves as a scaffold for the deubiquitinase USP9x. USP9x in turn stimulates JAG1 activity through two mechanisms: (1) through TRB3 deubiquitination and stabilization, and (2) through deubiquitination and activation of Mind Bomb 1, an E3 ligase required for JAG1 ubiquitination-mediated endocytosis and Notch activation. These USP9x activities are confined to the signal-sending cell of a cell pair undergoing Notch signaling. We demonstrate that USP9x is required for TRB3 upregulation and Notch activation in response to cellular stress in basal-like breast cancer cells. These data suggest that TRB3 functions as a sensor of tumor microenvironmental stress and together with USP9x induces the cell survival and tumor-promoting activities of Notch. These findings identify a novel mechanism by which cancer cells survive in their hostile environment and provide potential therapeutic targets in breast cancer.
Collapse
Affiliation(s)
- J Izrailit
- Campbell Family Institute for Cancer Research, Ontario Cancer Institute, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Ontario Cancer Institute, Princess Margaret Hospital, Toronto, ON, Canada
| | - A Jaiswal
- Campbell Family Institute for Cancer Research, Ontario Cancer Institute, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Ontario Cancer Institute, Princess Margaret Hospital, Toronto, ON, Canada
| | - W Zheng
- Campbell Family Institute for Cancer Research, Ontario Cancer Institute, Toronto, ON, Canada
| | - M F Moran
- Program in Molecular Structure and Function, The Hospital for Sick Children, Toronto, ON, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - M Reedijk
- Campbell Family Institute for Cancer Research, Ontario Cancer Institute, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Ontario Cancer Institute, Princess Margaret Hospital, Toronto, ON, Canada.,Department of Surgical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| |
Collapse
|
48
|
Abstract
The highly conserved Notch signalling pathway functions in many different developmental and homeostatic processes, which raises the question of how this pathway can achieve such diverse outcomes. With a direct route from the membrane to the nucleus, the Notch pathway has fewer opportunities for regulation than do many other signalling pathways, yet it generates exquisitely patterned structures, including sensory hair cells and branched arterial networks. More confusingly, its activity promotes tissue growth and cancers in some circumstances but cell death and tumour suppression in others. Many different regulatory mechanisms help to shape the activity of the Notch pathway, generating functional outputs that are appropriate for each context. These mechanisms include the receptor-ligand landscape, the tissue topology, the nuclear environment and the connectivity of the regulatory networks.
Collapse
Affiliation(s)
- Sarah J Bray
- Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK
| |
Collapse
|
49
|
Safdar K, Gu A, Xu X, Au V, Taylor J, Flibotte S, Moerman DG, Maine EM. UBR-5, a Conserved HECT-Type E3 Ubiquitin Ligase, Negatively Regulates Notch-Type Signaling in Caenorhabditis elegans. G3 (BETHESDA, MD.) 2016; 6:2125-34. [PMID: 27185398 PMCID: PMC4938665 DOI: 10.1534/g3.116.027805] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 05/09/2016] [Indexed: 12/17/2022]
Abstract
Notch-type signaling mediates cell-cell interactions important for animal development. In humans, reduced or inappropriate Notch signaling activity is associated with various developmental defects and disease states, including cancers. Caenorhabditis elegans expresses two Notch-type receptors, GLP-1 and LIN-12. GLP-1 mediates several cell-signaling events in the embryo and promotes germline proliferation in the developing and adult gonad. LIN-12 acts redundantly with GLP-1 in certain inductive events in the embryo and mediates several cell-cell interactions during larval development. Recovery of genetic suppressors and enhancers of glp-1 or lin-12 loss- or gain-of-function mutations has identified numerous regulators of GLP-1 and LIN-12 signaling activity. Here, we report the molecular identification of sog-1, a gene identified in screens for recessive suppressors of conditional glp-1 loss-of-function mutations. The sog-1 gene encodes UBR-5, the sole C. elegans member of the UBR5/Hyd family of HECT-type E3 ubiquitin ligases. Molecular and genetic analyses indicate that the loss of ubr-5 function suppresses defects caused by reduced signaling via GLP-1 or LIN-12. In contrast, ubr-5 mutations do not suppress embryonic or larval lethality associated with mutations in a downstream transcription factor, LAG-1. In the gonad, ubr-5 acts in the receiving cells (germ cells) to limit GLP-1 signaling activity. SEL-10 is the F-box component of SCF(SEL-10) E3 ubiquitin-ligase complex that promotes turnover of Notch intracellular domain. UBR-5 acts redundantly with SEL-10 to limit Notch signaling in certain tissues. We hypothesize that UBR-5 activity limits Notch-type signaling by promoting turnover of receptor or limiting its interaction with pathway components.
Collapse
Affiliation(s)
- Komal Safdar
- Department of Biology, Syracuse University, New York 13244
| | - Anniya Gu
- Department of Biology, Syracuse University, New York 13244
| | - Xia Xu
- Department of Biology, Syracuse University, New York 13244
| | - Vinci Au
- Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Jon Taylor
- Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Stephane Flibotte
- Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Donald G Moerman
- Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | | |
Collapse
|
50
|
Okano M, Matsuo H, Nishimura Y, Hozumi K, Yoshioka S, Tonoki A, Itoh M. Mib1 modulates dynamin 2 recruitment via Snx18 to promote Dll1 endocytosis for efficient Notch signaling. Genes Cells 2016; 21:425-41. [DOI: 10.1111/gtc.12350] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Accepted: 01/28/2016] [Indexed: 11/26/2022]
Affiliation(s)
- Makoto Okano
- Graduate School of Science; Nagoya University; Nagoya Aichi 464-8602 Japan
| | - Hiromi Matsuo
- Graduate School of Science; Nagoya University; Nagoya Aichi 464-8602 Japan
| | - Yuya Nishimura
- Graduate School of Pharmaceutical Sciences; Chiba University; Chiba 260-8675 Japan
| | - Katsuto Hozumi
- Department of Immunology; Tokai University School of Medicine; Isehara Kanagawa 259-1193 Japan
| | - Saho Yoshioka
- Graduate School of Pharmaceutical Sciences; Chiba University; Chiba 260-8675 Japan
| | - Ayako Tonoki
- Graduate School of Pharmaceutical Sciences; Chiba University; Chiba 260-8675 Japan
| | - Motoyuki Itoh
- Graduate School of Science; Nagoya University; Nagoya Aichi 464-8602 Japan
- Graduate School of Pharmaceutical Sciences; Chiba University; Chiba 260-8675 Japan
| |
Collapse
|