1
|
Yan Q, Gomis Perez C, Karatekin E. Cell Membrane Tension Gradients, Membrane Flows, and Cellular Processes. Physiology (Bethesda) 2024; 39:0. [PMID: 38501962 DOI: 10.1152/physiol.00007.2024] [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: 01/30/2024] [Revised: 03/18/2024] [Accepted: 03/18/2024] [Indexed: 03/20/2024] Open
Abstract
Cell membrane tension affects and is affected by many fundamental cellular processes, yet it is poorly understood. Recent experiments show that membrane tension can propagate at vastly different speeds in different cell types, reflecting physiological adaptations. Here we briefly review the current knowledge about membrane tension gradients, membrane flows, and their physiological context.
Collapse
Affiliation(s)
- Qi Yan
- Cellular and Molecular Physiology, Yale University, New Haven, Connecticut, United States
- Nanobiology Institute, Yale University, West Haven, Connecticut, United States
| | - Carolina Gomis Perez
- Cellular and Molecular Physiology, Yale University, New Haven, Connecticut, United States
- Nanobiology Institute, Yale University, West Haven, Connecticut, United States
| | - Erdem Karatekin
- Cellular and Molecular Physiology, Yale University, New Haven, Connecticut, United States
- Nanobiology Institute, Yale University, West Haven, Connecticut, United States
- Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut, United States
- Wu Tsai Institute, Yale University, New Haven, Connecticut, United States
- Saints-Pères Paris Institute for the Neurosciences (SPPIN), Centre National de la Recherche Scientifique (CNRS), Paris, France
| |
Collapse
|
2
|
Shen Y, Ori-McKenney KM. Microtubule-associated protein MAP7 promotes tubulin posttranslational modifications and cargo transport to enable osmotic adaptation. Dev Cell 2024:S1534-5807(24)00190-4. [PMID: 38574732 DOI: 10.1016/j.devcel.2024.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 09/11/2023] [Accepted: 03/12/2024] [Indexed: 04/06/2024]
Abstract
Cells remodel their cytoskeletal networks to adapt to their environment. Here, we analyze the mechanisms utilized by the cell to tailor its microtubule landscape in response to changes in osmolarity that alter macromolecular crowding. By integrating live-cell imaging, ex vivo enzymatic assays, and in vitro reconstitution, we probe the impact of cytoplasmic density on microtubule-associated proteins (MAPs) and tubulin posttranslational modifications (PTMs). We find that human epithelial cells respond to fluctuations in cytoplasmic density by modulating microtubule acetylation, detyrosination, or MAP7 association without differentially affecting polyglutamylation, tyrosination, or MAP4 association. These MAP-PTM combinations alter intracellular cargo transport, enabling the cell to respond to osmotic challenges. We further dissect the molecular mechanisms governing tubulin PTM specification and find that MAP7 promotes acetylation and inhibits detyrosination. Our data identify MAP7 in modulating the tubulin code, resulting in microtubule cytoskeleton remodeling and alteration of intracellular transport as an integrated mechanism of cellular adaptation.
Collapse
Affiliation(s)
- Yusheng Shen
- Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA 95616, USA
| | - Kassandra M Ori-McKenney
- Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA 95616, USA.
| |
Collapse
|
3
|
Ghisleni A, Gauthier NC. Mechanotransduction through membrane tension: It's all about propagation? Curr Opin Cell Biol 2024; 86:102294. [PMID: 38101114 DOI: 10.1016/j.ceb.2023.102294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 12/17/2023]
Abstract
Over the past 25 years, membrane tension has emerged as a primary mechanical factor influencing cell behavior. Although supporting evidences are accumulating, the integration of this parameter in the lifecycle of cells, organs, and tissues is complex. The plasma membrane is envisioned as a bilayer continuum acting as a 2D fluid. However, it possesses almost infinite combinations of proteins, lipids, and glycans that establish interactions with the extracellular or intracellular environments. This results in a tridimensional composite material with non-trivial dynamics and physics, and the task of integrating membrane mechanics and cellular outcome is a daunting chore for biologists. In light of the most recent discoveries, we aim in this review to provide non-specialist readers some tips on how to solve this conundrum.
Collapse
Affiliation(s)
- Andrea Ghisleni
- IFOM ETS, The AIRC Institute of Molecular Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Nils C Gauthier
- IFOM ETS, The AIRC Institute of Molecular Oncology, Via Adamello 16, 20139, Milan, Italy.
| |
Collapse
|
4
|
Maghe C, Trillet K, André-Grégoire G, Kerhervé M, Merlet L, Jacobs KA, Schauer K, Bidère N, Gavard J. The paracaspase MALT1 controls cholesterol homeostasis in glioblastoma stem-like cells through lysosome proteome shaping. Cell Rep 2024; 43:113631. [PMID: 38183651 DOI: 10.1016/j.celrep.2023.113631] [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: 03/24/2023] [Revised: 11/27/2023] [Accepted: 12/13/2023] [Indexed: 01/08/2024] Open
Abstract
Glioblastoma stem-like cells (GSCs) compose a tumor-initiating and -propagating population remarkably vulnerable to variation in the stability and integrity of the lysosomal compartment. Previous work has shown that the expression and activity of the paracaspase MALT1 control GSC viability via lysosome abundance. However, the underlying mechanisms remain elusive. By combining RNA sequencing (RNA-seq) with proteome-wide label-free quantification, we now report that MALT1 repression in patient-derived GSCs alters the homeostasis of cholesterol, which accumulates in late endosomes (LEs)-lysosomes. This failure in cholesterol supply culminates in cell death and autophagy defects, which can be partially reverted by providing exogenous membrane-permeable cholesterol to GSCs. From a molecular standpoint, a targeted lysosome proteome analysis unraveled that Niemann-Pick type C (NPC) lysosomal cholesterol transporters are diluted when MALT1 is impaired. Accordingly, we found that NPC1/2 inhibition and silencing partially mirror MALT1 loss-of-function phenotypes. This supports the notion that GSC fitness relies on lysosomal cholesterol homeostasis.
Collapse
Affiliation(s)
- Clément Maghe
- Team SOAP, CRCI2NA, Nantes Université, INSERM, CNRS, Université d'Angers, 44000 Nantes, France; Equipe Labellisée Ligue Nationale Contre le Cancer, 75013 Paris, France
| | - Kilian Trillet
- Team SOAP, CRCI2NA, Nantes Université, INSERM, CNRS, Université d'Angers, 44000 Nantes, France; Equipe Labellisée Ligue Nationale Contre le Cancer, 75013 Paris, France
| | - Gwennan André-Grégoire
- Team SOAP, CRCI2NA, Nantes Université, INSERM, CNRS, Université d'Angers, 44000 Nantes, France; Equipe Labellisée Ligue Nationale Contre le Cancer, 75013 Paris, France; Institut de Cancérologie de l'Ouest (ICO), 44800 Saint-Herblain, France
| | - Mathilde Kerhervé
- Team SOAP, CRCI2NA, Nantes Université, INSERM, CNRS, Université d'Angers, 44000 Nantes, France; Equipe Labellisée Ligue Nationale Contre le Cancer, 75013 Paris, France
| | - Laura Merlet
- Team SOAP, CRCI2NA, Nantes Université, INSERM, CNRS, Université d'Angers, 44000 Nantes, France; Equipe Labellisée Ligue Nationale Contre le Cancer, 75013 Paris, France
| | - Kathryn A Jacobs
- Team SOAP, CRCI2NA, Nantes Université, INSERM, CNRS, Université d'Angers, 44000 Nantes, France; Equipe Labellisée Ligue Nationale Contre le Cancer, 75013 Paris, France
| | - Kristine Schauer
- Institut Gustave Roussy, Université Paris-Saclay, INSERM, CNRS, 94800 Villejuif, France
| | - Nicolas Bidère
- Team SOAP, CRCI2NA, Nantes Université, INSERM, CNRS, Université d'Angers, 44000 Nantes, France; Equipe Labellisée Ligue Nationale Contre le Cancer, 75013 Paris, France
| | - Julie Gavard
- Team SOAP, CRCI2NA, Nantes Université, INSERM, CNRS, Université d'Angers, 44000 Nantes, France; Equipe Labellisée Ligue Nationale Contre le Cancer, 75013 Paris, France; Institut de Cancérologie de l'Ouest (ICO), 44800 Saint-Herblain, France.
| |
Collapse
|
5
|
Zhang H, Jiang H, Liu X, Wang X. A review of innovative electrochemical strategies for bioactive molecule detection and cell imaging: Current advances and challenges. Anal Chim Acta 2024; 1285:341920. [PMID: 38057043 DOI: 10.1016/j.aca.2023.341920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/13/2023] [Accepted: 10/14/2023] [Indexed: 12/08/2023]
Abstract
Cellular heterogeneity poses a major challenge for tumor theranostics, requiring high-resolution intercellular bioanalysis strategies. Over the past decades, the advantages of electrochemical analysis, such as high sensitivity, good spatio-temporal resolution, and ease of use, have made it the preferred method to uncover cellular differences. To inspire more creative research, herein, we highlight seminal works in electrochemical techniques for biomolecule analysis and bioimaging. Specifically, micro/nano-electrode-based electrochemical techniques enable real-time quantitative analysis of electroactive substances relevant to life processes in the micro-nanostructure of cells and tissues. Nanopore-based technique plays a vital role in biosensing by utilizing nanoscale pores to achieve high-precision detection and analysis of biomolecules with exceptional sensitivity and single-molecule resolution. Electrochemiluminescence (ECL) technology is utilized for real-time monitoring of the behavior and features of individual cancer cells, enabling observation of their dynamic processes due to its capability of providing high-resolution and highly sensitive bioimaging of cells. Particularly, scanning electrochemical microscopy (SECM) and scanning ion conductance microscopy (SICM) which are widely used in real-time observation of cell surface biological processes and three-dimensional imaging of micro-nano structures, such as metabolic activity, ion channel activity, and cell morphology are introduced in this review. Furthermore, the expansion of the scope of cellular electrochemistry research by innovative functionalized electrodes and electrochemical imaging models and strategies to address future challenges and potential applications is also discussed in this review.
Collapse
Affiliation(s)
- Hao Zhang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Hui Jiang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Xiaohui Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China.
| | - Xuemei Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China.
| |
Collapse
|
6
|
Shen Y, Ori-McKenney KM. Macromolecular Crowding Tailors the Microtubule Cytoskeleton Through Tubulin Modifications and Microtubule-Associated Proteins. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.14.544846. [PMID: 37398431 PMCID: PMC10312695 DOI: 10.1101/2023.06.14.544846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Cells remodel their cytoskeletal networks to adapt to their environment. Here, we analyze the mechanisms utilized by the cell to tailor its microtubule landscape in response to changes in osmolarity that alter macromolecular crowding. By integrating live cell imaging, ex vivo enzymatic assays, and in vitro reconstitution, we probe the impact of acute perturbations in cytoplasmic density on microtubule-associated proteins (MAPs) and tubulin posttranslational modifications (PTMs), unraveling the molecular underpinnings of cellular adaptation via the microtubule cytoskeleton. We find that cells respond to fluctuations in cytoplasmic density by modulating microtubule acetylation, detyrosination, or MAP7 association, without differentially affecting polyglutamylation, tyrosination, or MAP4 association. These MAP-PTM combinations alter intracellular cargo transport, enabling the cell to respond to osmotic challenges. We further dissect the molecular mechanisms governing tubulin PTM specification, and find that MAP7 promotes acetylation by biasing the conformation of the microtubule lattice, and directly inhibits detyrosination. Acetylation and detyrosination can therefore be decoupled and utilized for distinct cellular purposes. Our data reveal that the MAP code dictates the tubulin code, resulting in remodeling of the microtubule cytoskeleton and alteration of intracellular transport as an integrated mechanism of cellular adaptation.
Collapse
Affiliation(s)
- Yusheng Shen
- Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA 95616, USA
| | - Kassandra M Ori-McKenney
- Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA 95616, USA
| |
Collapse
|
7
|
Lachuer H, Le L, Lévêque-Fort S, Goud B, Schauer K. Spatial organization of lysosomal exocytosis relies on membrane tension gradients. Proc Natl Acad Sci U S A 2023; 120:e2207425120. [PMID: 36800388 PMCID: PMC9974462 DOI: 10.1073/pnas.2207425120] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 12/17/2022] [Indexed: 02/18/2023] Open
Abstract
Lysosomal exocytosis is involved in many key cellular processes but its spatiotemporal regulation is poorly known. Using total internal reflection fluorescence microscopy (TIRFM) and spatial statistics, we observed that lysosomal exocytosis is not random at the adhesive part of the plasma membrane of RPE1 cells but clustered at different scales. Although the rate of exocytosis is regulated by the actin cytoskeleton, neither interfering with actin or microtubule dynamics by drug treatments alters its spatial organization. Exocytosis events partially co-appear at focal adhesions (FAs) and their clustering is reduced upon removal of FAs. Changes in membrane tension following a hypo-osmotic shock or treatment with methyl-β-cyclodextrin were found to increase clustering. To investigate the link between FAs and membrane tension, cells were cultured on adhesive ring-shaped micropatterns, which allow to control the spatial organization of FAs. By using a combination of TIRFM and fluorescence lifetime imaging microscopy (FLIM), we revealed the existence of a radial gradient in membrane tension. By changing the diameter of micropatterned substrates, we further showed that this gradient as well as the extent of exocytosis clustering can be controlled. Together, our data indicate that the spatial clustering of lysosomal exocytosis relies on membrane tension patterning controlled by the spatial organization of FAs.
Collapse
Affiliation(s)
- Hugo Lachuer
- Institut Curie, Paris Sciences et Lettres Research University, CNRS UMR 144 Cell Biology and Cancer, 75005Paris, France
| | - Laurent Le
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay91405, Orsay, France
| | - Sandrine Lévêque-Fort
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay91405, Orsay, France
| | - Bruno Goud
- Institut Curie, Paris Sciences et Lettres Research University, CNRS UMR 144 Cell Biology and Cancer, 75005Paris, France
| | - Kristine Schauer
- Institut Curie, Paris Sciences et Lettres Research University, CNRS UMR 144 Cell Biology and Cancer, 75005Paris, France
- Tumor Cell Dynamics Unit, Inserm U1279 Gustave Roussy Institute, Université Paris-Saclay, Villejuif94800, France
| |
Collapse
|