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Cavard A, Redman E, Mercey O, Abelanet S, Plaisant M, Arguel MJ, Magnone V, García SR, Rios G, Deprez M, Lebrigand K, Ponzio G, Caballero I, Barbry P, Zaragosi LE, Marcet B. The MIR34B/C genomic region contains multiple potential regulators of multiciliogenesis. FEBS Lett 2023. [PMID: 37102425 DOI: 10.1002/1873-3468.14630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 04/28/2023]
Abstract
The MIR449 genomic locus encompasses several regulators of multiciliated cell formation (multiciliogenesis). The miR-449 homologues miR-34b/c represent additional regulators of multiciliogenesis that are transcribed from another locus. Here, we characterized the expression of BTG4, LAYN and HOATZ, located in the MIR34B/C locus using single-cell RNA-seq and super-resolution microscopy from human, mouse or pig multiciliogenesis models. BTG4, LAYN and HOATZ transcripts were expressed in both precursors and mature multiciliated cells. The Layilin/LAYN protein was absent from primary cilia, but it was expressed in apical membrane regions or throughout motile cilia. LAYN silencing altered apical actin cap formation and multiciliogenesis. HOATZ protein was detected in primary cilia or throughout motile cilia. Altogether, our data suggest that the MIR34B/C locus may gather potential actors of multiciliogenesis.
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Affiliation(s)
- Amélie Cavard
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | - Elisa Redman
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | - Olivier Mercey
- Institut de Biologie de l'École Normale Supérieure, Paris, France
| | - Sophie Abelanet
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | - Magali Plaisant
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | | | | | | | - Géraldine Rios
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | - Marie Deprez
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | - Kévin Lebrigand
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | - Gilles Ponzio
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | | | - Pascal Barbry
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | | | - Brice Marcet
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
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2
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Rachedi N, Torrino S, Abelanet S, Gay A, Debayle D, Perros F, Bertero T. Extracellular matrix remodeling and its implication in vascular cells reprogramming during pulmonary arterial hypertension. Rev Mal Respir 2023. [DOI: 10.1016/j.rmr.2022.11.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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3
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Khoubza L, Gilbert N, Kim EJ, Chatelain FC, Feliciangeli S, Abelanet S, Kang D, Lesage F, Bichet D. Alkaline-sensitive two-pore domain potassium channels form functional heteromers in pancreatic β-cells. J Biol Chem 2022; 298:102447. [PMID: 36063992 PMCID: PMC9520024 DOI: 10.1016/j.jbc.2022.102447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 11/15/2022] Open
Abstract
Two-pore domain K+ channels (K2P channels), active as dimers, produce inhibitory currents regulated by a variety of stimuli. Among them, TWIK1-related alkalinization-activated K+ channel 1 (TALK1), TWIK1-related alkalinization-activated K+ channel 2 (TALK2), and TWIK1-related acid-sensitive K+ channel 2 (TASK2) form a subfamily of structurally related K2P channels stimulated by extracellular alkalosis. The human genes encoding these proteins are clustered at chromosomal region 6p21 and coexpressed in multiple tissues, including the pancreas. The question whether these channels form functional heteromers remained open. By analyzing single-cell transcriptomic data, we show that these channels are coexpressed in insulin-secreting pancreatic β-cells. Using in situ proximity ligation assay and electrophysiology, we show that they form functional heterodimers both upon heterologous expression and under native conditions in human pancreatic β-cells. We demonstrate that heteromerization of TALK2 with TALK1 or with TASK2 endows TALK2 with sensitivity to extracellular alkalosis in the physiological range. We further show that the association of TASK2 with TALK1 and TALK2 increases their unitary conductance. These results provide a new example of heteromerization in the K2P channel family expanding the range of the potential physiological and pathophysiological roles of TALK1/TALK2/TASK2 channels, not only in insulin-secreting cells but also in the many other tissues in which they are coexpressed.
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Affiliation(s)
- Lamyaa Khoubza
- Université côte d'Azur, IPMC CNRS UMR7275, Laboratory of Excellence ICST, Valbonne, France
| | - Nicolas Gilbert
- Université côte d'Azur, IPMC CNRS UMR7275, Laboratory of Excellence ICST, Valbonne, France
| | - Eun-Jin Kim
- Department of Physiology, College of Medicine and Institute of Health Sciences, Gyeongsang National University, Jinju, South Korea
| | - Franck C Chatelain
- Université côte d'Azur, IPMC CNRS UMR7275, Laboratory of Excellence ICST, Valbonne, France
| | - Sylvain Feliciangeli
- Université côte d'Azur, IPMC CNRS UMR7275, Laboratory of Excellence ICST, Valbonne, France; Inserm, Paris, France
| | - Sophie Abelanet
- Université côte d'Azur, IPMC CNRS UMR7275, Laboratory of Excellence ICST, Valbonne, France
| | - Dawon Kang
- Department of Physiology, College of Medicine and Institute of Health Sciences, Gyeongsang National University, Jinju, South Korea
| | - Florian Lesage
- Université côte d'Azur, IPMC CNRS UMR7275, Laboratory of Excellence ICST, Valbonne, France; Inserm, Paris, France.
| | - Delphine Bichet
- Université côte d'Azur, IPMC CNRS UMR7275, Laboratory of Excellence ICST, Valbonne, France
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4
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Milanini J, Magdeleine M, Fuggetta N, Ikhlef S, Brau F, Abelanet S, Alpy F, Tomasetto C, Drin G. In situ artificial contact sites (ISACS) between synthetic and endogenous organelle membranes allow for quantification of protein-tethering activities. J Biol Chem 2022; 298:101780. [PMID: 35231443 PMCID: PMC9052148 DOI: 10.1016/j.jbc.2022.101780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 02/16/2022] [Accepted: 02/20/2022] [Indexed: 11/16/2022] Open
Abstract
Membrane contact sites are specialized areas where the membranes of two distinct organelles are physically connected and allow for the exchange of molecules and for signaling processes. Understanding the mechanisms whereby proteins localize to and function in these structures is of special interest; however, methods allowing for reconstitution of these contact sites are few and only based on synthetic membranes and recombinant proteins. Here, we devised a strategy to create in situ artificial contact sites between synthetic and endogenous organelle membranes. Liposomes functionalized with a peptide containing a two phenylalanines in an acidic tract (FFAT) motif were added to adherent cells whose plasma membrane was perforated. Confocal and super-resolution microscopy revealed that these liposomes associated with the endoplasmic reticulum via the specific interaction of the FFAT motif with endoplasmic reticulum–resident vesicle-associated membrane protein–associated proteins. This approach allowed for quantification of the attachment properties of peptides corresponding to FFAT motifs derived from distinct proteins and of a protein construct derived from steroidogenic acute regulatory protein–related lipid transfer domain-3. Collectively, these data indicate that the creation of in situ artificial contact sites represents an efficient approach for studying the membrane-tethering activity of proteins and for designing membrane contact site reconstitution assays in cellular contexts.
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Affiliation(s)
- Julie Milanini
- Université Côte d'Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), Valbonne, France
| | - Maud Magdeleine
- Université Côte d'Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), Valbonne, France
| | - Nicolas Fuggetta
- Université Côte d'Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), Valbonne, France
| | - Souade Ikhlef
- Université Côte d'Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), Valbonne, France
| | - Frédéric Brau
- Université Côte d'Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), Valbonne, France
| | - Sophie Abelanet
- Université Côte d'Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), Valbonne, France
| | - Fabien Alpy
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Centre National de la Recherche Scientifique UMR7104, Institut National de la Santé et de la Recherche Médicale U1258, Université de Strasbourg, Illkirch, France
| | - Catherine Tomasetto
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Centre National de la Recherche Scientifique UMR7104, Institut National de la Santé et de la Recherche Médicale U1258, Université de Strasbourg, Illkirch, France
| | - Guillaume Drin
- Université Côte d'Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), Valbonne, France.
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5
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Prieto M, Folci A, Poupon G, Schiavi S, Buzzelli V, Pronot M, François U, Pousinha P, Lattuada N, Abelanet S, Castagnola S, Chafai M, Khayachi A, Gwizdek C, Brau F, Deval E, Francolini M, Bardoni B, Humeau Y, Trezza V, Martin S. Missense mutation of Fmr1 results in impaired AMPAR-mediated plasticity and socio-cognitive deficits in mice. Nat Commun 2021; 12:1557. [PMID: 33692361 PMCID: PMC7946954 DOI: 10.1038/s41467-021-21820-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 02/16/2021] [Indexed: 11/22/2022] Open
Abstract
Fragile X syndrome (FXS) is the most frequent form of inherited intellectual disability and the best-described monogenic cause of autism. CGG-repeat expansion in the FMR1 gene leads to FMR1 silencing, loss-of-expression of the Fragile X Mental Retardation Protein (FMRP), and is a common cause of FXS. Missense mutations in the FMR1 gene were also identified in FXS patients, including the recurrent FMRP-R138Q mutation. To investigate the mechanisms underlying FXS caused by this mutation, we generated a knock-in mouse model (Fmr1R138Q) expressing the FMRP-R138Q protein. We demonstrate that, in the hippocampus of the Fmr1R138Q mice, neurons show an increased spine density associated with synaptic ultrastructural defects and increased AMPA receptor-surface expression. Combining biochemical assays, high-resolution imaging, electrophysiological recordings, and behavioural testing, we also show that the R138Q mutation results in impaired hippocampal long-term potentiation and socio-cognitive deficits in mice. These findings reveal the functional impact of the FMRP-R138Q mutation in a mouse model of FXS.
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Affiliation(s)
- Marta Prieto
- Université Côte d'Azur, CNRS, IPMC, Valbonne, France
| | | | | | | | | | - Marie Pronot
- Université Côte d'Azur, CNRS, IPMC, Valbonne, France
| | | | | | - Norma Lattuada
- Università degli Studi di Milano, Dept. of Medical Biotechnology and Translational Medicine, Milan, Italy
| | | | | | - Magda Chafai
- Université Côte d'Azur, CNRS, IPMC, Valbonne, France
| | | | | | - Frédéric Brau
- Université Côte d'Azur, CNRS, IPMC, Valbonne, France
| | | | - Maura Francolini
- Università degli Studi di Milano, Dept. of Medical Biotechnology and Translational Medicine, Milan, Italy
| | - Barbara Bardoni
- Université Côte d'Azur, Inserm, CNRS, IPMC, Valbonne, France
| | - Yann Humeau
- University of Bordeaux, CNRS, IINS, Bordeaux, France
| | | | - Stéphane Martin
- Université Côte d'Azur, Inserm, CNRS, IPMC, Valbonne, France.
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6
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Deprez M, Zaragosi LE, Truchi M, Becavin C, Ruiz García S, Arguel MJ, Plaisant M, Magnone V, Lebrigand K, Abelanet S, Brau F, Paquet A, Pe'er D, Marquette CH, Leroy S, Barbry P. A Single-Cell Atlas of the Human Healthy Airways. Am J Respir Crit Care Med 2021; 202:1636-1645. [PMID: 32726565 DOI: 10.1164/rccm.201911-2199oc] [Citation(s) in RCA: 207] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Rationale: The respiratory tract constitutes an elaborate line of defense that is based on a unique cellular ecosystem.Objectives: We aimed to investigate cell population distributions and transcriptional changes along the airways by using single-cell RNA profiling.Methods: We have explored the cellular heterogeneity of the human airway epithelium in 10 healthy living volunteers by single-cell RNA profiling. A total of 77,969 cells were collected at 35 distinct locations, from the nose to the 12th division of the airway tree.Measurements and Main Results: The resulting atlas is composed of a high percentage of epithelial cells (89.1%) but also immune (6.2%) and stromal (4.7%) cells with distinct cellular proportions in different regions of the airways. It reveals differential gene expression between identical cell types (suprabasal, secretory, and multiciliated cells) from the nose (MUC4, PI3, SIX3) and tracheobronchial (SCGB1A1, TFF3) airways. By contrast, cell-type-specific gene expression is stable across all tracheobronchial samples. Our atlas improves the description of ionocytes, pulmonary neuroendocrine cells, and brush cells and identifies a related population of NREP-positive cells. We also report the association of KRT13 with dividing cells that are reminiscent of previously described mouse "hillock" cells and with squamous cells expressing SCEL and SPRR1A/B.Conclusions: Robust characterization of a single-cell cohort in healthy airways establishes a valuable resource for future investigations. The precise description of the continuum existing from the nasal epithelium to successive divisions of the airways and the stable gene expression profile of these regions better defines conditions under which relevant tracheobronchial proxies of human respiratory diseases can be developed.
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Affiliation(s)
- Marie Deprez
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Laure-Emmanuelle Zaragosi
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Marin Truchi
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Christophe Becavin
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Sandra Ruiz García
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Marie-Jeanne Arguel
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Magali Plaisant
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Virginie Magnone
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Kevin Lebrigand
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Sophie Abelanet
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Frédéric Brau
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Agnès Paquet
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
| | - Dana Pe'er
- Memorial Sloan Kettering Cancer Center, New York, New York; and
| | - Charles-Hugo Marquette
- Université Côte d'Azur, Centre Hospitalier Universitaire de Nice, Fédération Hospitalo-Universitaire OncoAge, CNRS, Inserm, Institute for Research on Cancer and Aging Nice Team 3, Pulmonology Department, Nice, France
| | - Sylvie Leroy
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France.,Université Côte d'Azur, Centre Hospitalier Universitaire de Nice, Fédération Hospitalo-Universitaire OncoAge, CNRS, Inserm, Institute for Research on Cancer and Aging Nice Team 3, Pulmonology Department, Nice, France
| | - Pascal Barbry
- Université Côte d'Azur, CNRS, Institut Pharmacologie Moléculaire et Cellulaire, Sophia-Antipolis, France
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Gruosso T, Garnier C, Abelanet S, Kieffer Y, Lemesre V, Bellanger D, Bieche I, Marangoni E, Sastre-Garau X, Mieulet V, Mechta-Grigoriou F. MAP3K8/TPL-2/COT is a potential predictive marker for MEK inhibitor treatment in high-grade serous ovarian carcinomas. Nat Commun 2015; 6:8583. [PMID: 26456302 PMCID: PMC4633961 DOI: 10.1038/ncomms9583] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 09/07/2015] [Indexed: 02/08/2023] Open
Abstract
Ovarian cancer is a silent disease with a poor prognosis that urgently requires new therapeutic strategies. In low-grade ovarian tumours, mutations in the MAP3K BRAF gene constitutively activate the downstream kinase MEK. Here we demonstrate that an additional MAP3K, MAP3K8 (TPL-2/COT), accumulates in high-grade serous ovarian carcinomas (HGSCs) and is a potential prognostic marker for these tumours. By combining analyses on HGSC patient cohorts, ovarian cancer cells and patient-derived xenografts, we demonstrate that MAP3K8 controls cancer cell proliferation and migration by regulating key players in G1/S transition and adhesion dynamics. In addition, we show that the MEK pathway is the main pathway involved in mediating MAP3K8 function, and that MAP3K8 exhibits a reliable predictive value for the effectiveness of MEK inhibitor treatment. Our data highlight key roles for MAP3K8 in HGSC and indicate that MEK inhibitors could be a useful treatment strategy, in combination with conventional chemotherapy, for this disease.
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Affiliation(s)
- Tina Gruosso
- Stress and Cancer Laboratory, Institut Curie, 26, rue d'Ulm, Paris 75248, France.,Inserm, Genetics and Biology of Cancers, U830, Paris F-75248, France
| | - Camille Garnier
- Stress and Cancer Laboratory, Institut Curie, 26, rue d'Ulm, Paris 75248, France.,Inserm, Genetics and Biology of Cancers, U830, Paris F-75248, France
| | - Sophie Abelanet
- Stress and Cancer Laboratory, Institut Curie, 26, rue d'Ulm, Paris 75248, France.,Inserm, Genetics and Biology of Cancers, U830, Paris F-75248, France
| | - Yann Kieffer
- Stress and Cancer Laboratory, Institut Curie, 26, rue d'Ulm, Paris 75248, France.,Inserm, Genetics and Biology of Cancers, U830, Paris F-75248, France
| | - Vincent Lemesre
- Stress and Cancer Laboratory, Institut Curie, 26, rue d'Ulm, Paris 75248, France.,Inserm, Genetics and Biology of Cancers, U830, Paris F-75248, France
| | - Dorine Bellanger
- Inserm, Genetics and Biology of Cancers, U830, Paris F-75248, France.,Genomics and Biology of the Hereditary Breast Cancers, Institut Curie, 26, rue d'Ulm, Paris 75248, France
| | - Ivan Bieche
- Department of Pharmacogenomics, Institut Curie, 26, rue d'Ulm, Paris 75248, France
| | - Elisabetta Marangoni
- Translational Research Department, Laboratory of Precinical Investigation, Institut Curie, 26, rue d'Ulm, Paris 75248, France
| | | | - Virginie Mieulet
- Stress and Cancer Laboratory, Institut Curie, 26, rue d'Ulm, Paris 75248, France.,Inserm, Genetics and Biology of Cancers, U830, Paris F-75248, France
| | - Fatima Mechta-Grigoriou
- Stress and Cancer Laboratory, Institut Curie, 26, rue d'Ulm, Paris 75248, France.,Inserm, Genetics and Biology of Cancers, U830, Paris F-75248, France
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