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Capmany A, Yoshimura A, Kerdous R, Caorsi V, Lescure A, Nery ED, Coudrier E, Goud B, Schauer K. MYO1C stabilizes actin and facilitates arrival of transport carriers at the Golgi apparatus. J Cell Sci 2019; 132:jcs.225029. [DOI: 10.1242/jcs.225029] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 03/01/2019] [Indexed: 12/22/2022] Open
Abstract
We aim to identify the myosin motor proteins that control trafficking at the Golgi apparatus. In addition to the known Golgi-associated myosins MYO6, MYO18A and MYH9 (myosin IIA), we identify MYO1C as a novel player at the Golgi. We demonstrate that depletion of MYO1C induces Golgi apparatus fragmentation and decompaction. MYO1C accumulates at dynamic structures around the Golgi apparatus that colocalize with Golgi-associated actin dots. MYO1C depletion leads to loss of cellular F-actin, and Golgi apparatus decompaction is also observed after the inhibition or loss of the Arp2/3 complex. We show that the functional consequences of MYO1C depletion is a delay in the arrival of incoming transport carriers, both from the anterograde and retrograde routes. We propose that MYO1C stabilizes actin at the Golgi apparatus facilitating the arrival of incoming transport carriers at the Golgi.
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Affiliation(s)
- Anahi Capmany
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport group, 75248 Paris Cedex 05, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche144, 75005 Paris, France
| | - Azumi Yoshimura
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport group, 75248 Paris Cedex 05, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche144, 75005 Paris, France
| | - Rachid Kerdous
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport group, 75248 Paris Cedex 05, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche144, 75005 Paris, France
| | | | - Aurianne Lescure
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport group, 75248 Paris Cedex 05, France
- Department of Translational Research, BioPhenics High-Content Screening Laboratory, Cell and Tissue Imaging Facility (PICT-IBiSA), Paris, France
| | - Elaine Del Nery
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport group, 75248 Paris Cedex 05, France
- Department of Translational Research, BioPhenics High-Content Screening Laboratory, Cell and Tissue Imaging Facility (PICT-IBiSA), Paris, France
| | - Evelyne Coudrier
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport group, 75248 Paris Cedex 05, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche144, 75005 Paris, France
| | - Bruno Goud
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport group, 75248 Paris Cedex 05, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche144, 75005 Paris, France
| | - Kristine Schauer
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport group, 75248 Paris Cedex 05, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche144, 75005 Paris, France
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Abstract
Many studies have found alterations in the positioning and morphology of intracellular organelles under different experimental conditions. Although the precise quantification of these changes is challenging, it is strongly facilitated in single cells that are seeded on micropatterned substrates. Indeed, the controlled microenvironment of the cell leads to a reproducible distribution of organelles, simplifying image analysis and minimizing the number of cells required for robust phenotypes. Here, we outline how alterations in the intracellular organization of lysosomes and mitochondria, as a result of different growth conditions, can be efficiently quantified in cells seeded on adhesive micropatterns.
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Affiliation(s)
- Bruno Latgé
- Molecular Mechanisms of Intracellular Transport Group, Institut Curie, PSL Research University, Paris Cedex 05, France.,Centre National de la Recherche Scientifique, Unité Mixte de Recherche 144, Paris, France
| | - Kristine Schauer
- Molecular Mechanisms of Intracellular Transport Group, Institut Curie, PSL Research University, Paris Cedex 05, France. .,Centre National de la Recherche Scientifique, Unité Mixte de Recherche 144, Paris, France.
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Capmany A, Latgé B, Schauer K. Analysis of Organelle Positioning Using Patterned Microdevices. ACTA ACUST UNITED AC 2018; 82:e77. [DOI: 10.1002/cpcb.77] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anahi Capmany
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport Group Paris France
- Centre National de la Recherche Scientifique Paris France
- School of Medicine FCM‐UNCuyo, CONICET, Biochemistry and Immunity Laboratory Mendoza Argentina
| | - Bruno Latgé
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport Group Paris France
- Centre National de la Recherche Scientifique Paris France
| | - Kristine Schauer
- Institut Curie, PSL Research University, Molecular Mechanisms of Intracellular Transport Group Paris France
- Centre National de la Recherche Scientifique Paris France
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van Bergeijk P, Hoogenraad CC, Kapitein LC. Right Time, Right Place: Probing the Functions of Organelle Positioning. Trends Cell Biol 2015; 26:121-134. [PMID: 26541125 DOI: 10.1016/j.tcb.2015.10.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/30/2015] [Accepted: 10/01/2015] [Indexed: 10/22/2022]
Abstract
The proper spatial arrangement of organelles underlies many cellular processes including signaling, polarization, and growth. Despite the importance of local positioning, the precise connection between subcellular localization and organelle function is often not fully understood. To address this, recent studies have developed and employed different strategies to directly manipulate organelle distributions, such as the use of (light-sensitive) heterodimerization to control the interaction between selected organelles and specific motor proteins, adaptor molecules, or anchoring factors. We review here the importance of subcellular localization as well as tools to control local organelle positioning. Because these approaches allow spatiotemporal control of organelle distribution, they will be invaluable tools to unravel local functioning and the mechanisms that control positioning.
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Affiliation(s)
- Petra van Bergeijk
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Casper C Hoogenraad
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Lukas C Kapitein
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 CH Utrecht, The Netherlands.
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Abstract
The compartmentalization of cellular functions in complex membranous organelles is a key feature of eukaryotic cells. To cope with the enormous complexity of trafficking pathways that connect these compartments, new approaches need to be considered and introduced into the field of cell biology. We exploit the advantages of the "micropatterning technique," which is to bring cells to adopt a highly reproducible shape, and probabilistic density mapping, which quantifies spatial organization of trafficking compartments, to study regulatory mechanisms of intracellular trafficking. Here, we provide a protocol to analyze and quantify alterations in trafficking compartments upon cellular manipulation. We demonstrate how this approach can be employed to study the regulation of Rab6-labeled transport carriers by the cytoskeleton.
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