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Ledoux B, Zanin N, Yang J, Mercier V, Coster C, Dupont-Gillain C, Alsteens D, Morsomme P, Renard HF. Plasma membrane nanodeformations promote actin polymerization through CIP4/CDC42 recruitment and regulate type II IFN signaling. SCIENCE ADVANCES 2023; 9:eade1660. [PMID: 38091386 PMCID: PMC10848735 DOI: 10.1126/sciadv.ade1660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/10/2023] [Indexed: 12/18/2023]
Abstract
In their environment, cells must cope with mechanical stresses constantly. Among these, nanoscale deformations of plasma membrane induced by substrate nanotopography are now largely accepted as a biophysical stimulus influencing cell behavior and function. However, the mechanotransduction cascades involved and their precise molecular effects on cellular physiology are still poorly understood. Here, using homemade fluorescent nanostructured cell culture surfaces, we explored the role of Bin/Amphiphysin/Rvs (BAR) domain proteins as mechanosensors of plasma membrane geometry. Our data reveal that distinct subsets of BAR proteins bind to plasma membrane deformations in a membrane curvature radius-dependent manner. Furthermore, we show that membrane curvature promotes the formation of dynamic actin structures mediated by the Rho GTPase CDC42, the F-BAR protein CIP4, and the presence of PI(4,5)P2. In addition, these actin-enriched nanodomains can serve as platforms to regulate receptor signaling as they appear to contain interferon-γ receptor (IFNγ-R) and to lead to the partial inhibition of IFNγ-induced JAK/STAT signaling.
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Affiliation(s)
- Benjamin Ledoux
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, Group of Molecular Physiology, Croix du Sud 4-5 bte L7.07.14, Louvain-la-Neuve 1348, Belgium
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, NanoBiophysics lab, Croix du Sud 4-5 bte L7.07.07, Louvain-la-Neuve 1348, Belgium
- UNamur, Morph-Im platform, Rue de Bruxelles 61, Namur 5000, Belgium
| | - Natacha Zanin
- UNamur, NAmur Research Institute for LIfe Sciences, Unité de Recherche en Biologie Cellulaire animale, Rue de Bruxelles 61, Namur 5000, Belgium
| | - Jinsung Yang
- Gyeongsang National University, Department of Biochemistry, College of Medicine, Department of Convergence Medical Sciences, Institute of Medical Science, Jinju 52727, South Korea
| | - Vincent Mercier
- Department of Biochemistry, University of Geneva, Geneva, Switzerland
| | - Charlotte Coster
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, Group of Molecular Physiology, Croix du Sud 4-5 bte L7.07.14, Louvain-la-Neuve 1348, Belgium
| | - Christine Dupont-Gillain
- UCLouvain, Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Place Louis Pasteur 1 bte L4.01.10, Louvain-la-Neuve 1348, Belgium
| | - David Alsteens
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, NanoBiophysics lab, Croix du Sud 4-5 bte L7.07.07, Louvain-la-Neuve 1348, Belgium
| | - Pierre Morsomme
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, Group of Molecular Physiology, Croix du Sud 4-5 bte L7.07.14, Louvain-la-Neuve 1348, Belgium
| | - Henri-François Renard
- UNamur, Morph-Im platform, Rue de Bruxelles 61, Namur 5000, Belgium
- UNamur, NAmur Research Institute for LIfe Sciences, Unité de Recherche en Biologie Cellulaire animale, Rue de Bruxelles 61, Namur 5000, Belgium
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Lemaigre C, Ceuppens A, Valades-Cruz CA, Ledoux B, Vanbeneden B, Hassan M, Zetterberg FR, Nilsson UJ, Johannes L, Wunder C, Renard HF, Morsomme P. N-BAR and F-BAR proteins-endophilin-A3 and PSTPIP1-control clathrin-independent endocytosis of L1CAM. Traffic 2023; 24:190-212. [PMID: 36843549 DOI: 10.1111/tra.12883] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/07/2023] [Accepted: 02/18/2023] [Indexed: 02/28/2023]
Abstract
Recent advances in the field demonstrate the high diversity and complexity of endocytic pathways. In the current study, we focus on the endocytosis of L1CAM. This glycoprotein plays a major role in the development of the nervous system, and is involved in cancer development and is associated with metastases and poor prognosis. Two L1CAM isoforms are subject to endocytosis: isoform 1, described as a clathrin-mediated cargo; isoform 2, whose endocytosis has never been studied. Deciphering the molecular machinery of isoform 2 internalisation should contribute to a better understanding of its pathophysiological role. First, we demonstrated in our cellular context that both isoforms of L1CAM are mainly a clathrin-independent cargo, which was not expected for isoform 1. Second, the mechanism of L1CAM endocytosis is specifically mediated by the N-BAR domain protein endophilin-A3. Third, we discovered PSTPIP1, an F-BAR domain protein, as a novel actor in this endocytic process. Finally, we identified galectins as endocytic partners and negative regulators of L1CAM endocytosis. In summary, the interplay of the BAR proteins endophilin-A3 and PSTPIP1, and galectins fine tune the clathrin-independent endocytosis of L1CAM.
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Affiliation(s)
- Camille Lemaigre
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, Group of Molecular Physiology, Louvain-la-Neuve, Belgium
| | - Apolline Ceuppens
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, Group of Molecular Physiology, Louvain-la-Neuve, Belgium
| | - Cesar Augusto Valades-Cruz
- Institut Curie, Université PSL, U1143 INSERM, UMR3666 CNRS, Cellular and Chemical Biology unit, Paris, France.,SERPICO Project Team, UMR144 CNRS Institut Curie, PSL Research University, Paris, France.,SERPICO Project Team, Inria Centre Rennes-Bretagne Atlantique, Campus Universitaire de Beaulieu, Rennes, France
| | - Benjamin Ledoux
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, Group of Molecular Physiology, Louvain-la-Neuve, Belgium
| | - Bastien Vanbeneden
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, Group of Molecular Physiology, Louvain-la-Neuve, Belgium
| | | | | | - Ulf J Nilsson
- Department of Chemistry, Lund University, Lund, Sweden
| | - Ludger Johannes
- Institut Curie, Université PSL, U1143 INSERM, UMR3666 CNRS, Cellular and Chemical Biology unit, Paris, France
| | - Christian Wunder
- Institut Curie, Université PSL, U1143 INSERM, UMR3666 CNRS, Cellular and Chemical Biology unit, Paris, France
| | - Henri-François Renard
- UNamur, NARILIS, Unité de recherche en biologie cellulaire animale (URBC), Namur, Belgium
| | - Pierre Morsomme
- UCLouvain, Louvain Institute of Biomolecular Science and Technology, Group of Molecular Physiology, Louvain-la-Neuve, Belgium
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Redpath GMI, Ananthanarayanan V. Endosomal sorting sorted - motors, adaptors and lessons from in vitro and cellular studies. J Cell Sci 2023; 136:292583. [PMID: 36861885 DOI: 10.1242/jcs.260749] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
Motor proteins are key players in exerting spatiotemporal control over the intracellular location of membrane-bound compartments, including endosomes containing cargo. In this Review, we focus on how motors and their cargo adaptors regulate positioning of cargoes from the earliest stages of endocytosis and through the two main intracellular itineraries: (1) degradation at the lysosome or (2) recycling back to the plasma membrane. In vitro and cellular (in vivo) studies on cargo transport thus far have typically focussed independently on either the motor proteins and adaptors, or membrane trafficking. Here, we will discuss recent studies to highlight what is known about the regulation of endosomal vesicle positioning and transport by motors and cargo adaptors. We also emphasise that in vitro and cellular studies are often performed at different scales, from single molecules to whole organelles, with the aim to provide a perspective on the unified principles of motor-driven cargo trafficking in living cells that can be learned from these differing scales.
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Affiliation(s)
- Gregory M I Redpath
- EMBL Australia Node in Single Molecule Science, Department of Molecular Medicine, School of Biomedical Sciences, The University of New South Wales, Sydney 2052, Australia
| | - Vaishnavi Ananthanarayanan
- EMBL Australia Node in Single Molecule Science, Department of Molecular Medicine, School of Biomedical Sciences, The University of New South Wales, Sydney 2052, Australia
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First person – François Tyckaert. J Cell Sci 2022. [DOI: 10.1242/jcs.260401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
ABSTRACT
First Person is a series of interviews with the first authors of a selection of papers published in Journal of Cell Science, helping early-career researchers promote themselves alongside their papers. François Tyckaert is first author on ‘ Rac1, the actin cytoskeleton and microtubules are key players in clathrin-independent endophilin-A3-mediated endocytosis’, published in JCS. François conducted the research described in this article while a PhD student in Pierre Morsomme's lab at the Louvain Institute of Biomolecular Science and Technology (LIBST), UCLouvain, Louvain-la-Neuve, Belgium. He is now a postdoc in the lab of Henri-François Renard at Namur Research Institute for Life Sciences (NARILIS), UNamur, Namur, Belgium, investigating the regulation of unconventional endocytic mechanisms and their role in cellular physiology.
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