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Cho Y, Koyama-Honda I, Tanimura A, Matsuzawa K, Ikenouchi J. A sustained calcium response mediated by IP3 receptor anchoring to the desmosome is essential for apoptotic cell elimination. Curr Biol 2024:S0960-9822(24)01173-4. [PMID: 39317193 DOI: 10.1016/j.cub.2024.08.057] [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: 03/11/2024] [Revised: 07/08/2024] [Accepted: 08/30/2024] [Indexed: 09/26/2024]
Abstract
Efficient elimination of apoptotic cells within epithelial cell sheets is crucial for preserving epithelial barrier integrity.1 It is well established that immediate neighbors of an apoptotic cell actively participate in its removal by enclosing it within a wall of actomyosin, pushing it out in a purse-string manner in a process called apical extrusion.2,3,4,5,6,7 Here, we found that sustained elevation of calcium ions in neighboring epithelial cells is necessary to generate the contractility required for apoptotic cell elimination. This phenomenon, which we call calcium response in effectors of apical extrusion (CaRE), highlights the disparate calcium dynamics within the epithelial sheet. Furthermore, we elucidate the essential role of desmosomes in CaRE. Specifically, we identify a subset of IP3 receptors within the endoplasmic reticulum that is recruited to the desmosome by K-Ras-induced actin-binding protein as the core component of this process. The interplay between these cellular structures heightens actomyosin contractility to drive apoptotic cell removal. Our findings underscore the physiological significance of integrating desmosomes with the endoplasmic reticulum in epithelial sheet homeostasis, shedding new light on cell-cell communication and tissue maintenance.
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Affiliation(s)
- Yuma Cho
- Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - Ikuko Koyama-Honda
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Akihiko Tanimura
- Division of Pharmacology, School of Dentistry, Health Sciences University of Hokkaido, Ishikari, Tobetsu 061-0293, Hokkaido, Japan
| | - Kenji Matsuzawa
- Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - Junichi Ikenouchi
- Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 819-0395, Japan; Department of Biochemistry, Kyushu University Graduate School of Medical Sciences, Fukuoka 812-8582, Japan.
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2
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Anderson CJ, Boeckaerts L, Chin P, Cardas JB, Xie W, Gonçalves A, Blancke G, Benson S, Rogatti S, Simpson MS, Davey A, Choi SM, Desmet S, Bushman SD, Goeminne G, Vandenabeele P, Desai MS, Vereecke L, Ravichandran KS. Metabolite-based inter-kingdom communication controls intestinal tissue recovery following chemotherapeutic injury. Cell Host Microbe 2024; 32:1469-1487.e9. [PMID: 39197455 DOI: 10.1016/j.chom.2024.07.026] [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: 01/04/2024] [Revised: 06/12/2024] [Accepted: 07/31/2024] [Indexed: 09/01/2024]
Abstract
Cytotoxic chemotherapies have devastating side effects, particularly within the gastrointestinal tract. Gastrointestinal toxicity includes the death and damage of the epithelium and an imbalance in the intestinal microbiota, otherwise known as dysbiosis. Whether dysbiosis is a direct contributor to tissue toxicity is a key area of focus. Here, from both mammalian and bacterial perspectives, we uncover an intestinal epithelial cell death-Enterobacteriaceae signaling axis that fuels dysbiosis. Specifically, our data demonstrate that chemotherapy-induced epithelial cell apoptosis and the purine-containing metabolites released from dying cells drive the inter-kingdom transcriptional re-wiring of the Enterobacteriaceae, including fundamental shifts in bacterial respiration and promotion of purine utilization-dependent expansion, which in turn delays the recovery of the intestinal tract. Inhibition of epithelial cell death or restriction of the Enterobacteriaceae to homeostatic levels reverses dysbiosis and improves intestinal recovery. These findings suggest that supportive therapies that maintain homeostatic levels of Enterobacteriaceae may be useful in resolving intestinal disease.
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Affiliation(s)
- Christopher J Anderson
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; Centre for Inflammation Research, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, UK.
| | - Laura Boeckaerts
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Priscilla Chin
- Centre for Inflammation Research, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, UK
| | - Javier Burgoa Cardas
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Wei Xie
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Amanda Gonçalves
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB BioImaging Core, Ghent, Belgium
| | - Gillian Blancke
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Sam Benson
- Centre for Inflammation Research, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, UK
| | - Sebastian Rogatti
- Centre for Inflammation Research, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, UK
| | - Mariska S Simpson
- Centre for Inflammation Research, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, UK
| | - Anna Davey
- Centre for Inflammation Research, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, UK
| | - Sze Men Choi
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | | | - Summer D Bushman
- Department of Infection and Immunity, Luxembourg Institute of Health, L-4354 Esch-sur-Alzette, Luxembourg
| | | | - Peter Vandenabeele
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Mahesh S Desai
- Department of Infection and Immunity, Luxembourg Institute of Health, L-4354 Esch-sur-Alzette, Luxembourg
| | - Lars Vereecke
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Kodi S Ravichandran
- VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; Division of Immunobiology, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA.
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Mann Z, Lim F, Verma S, Nanavati BN, Davies JM, Begun J, Hardeman EC, Gunning PW, Subramanyam D, Yap AS, Duszyc K. Preexisting tissue mechanical hypertension at adherens junctions disrupts apoptotic extrusion in epithelia. Mol Biol Cell 2024; 35:br3. [PMID: 37903230 PMCID: PMC10881161 DOI: 10.1091/mbc.e23-08-0337] [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: 09/05/2023] [Revised: 10/13/2023] [Accepted: 10/20/2023] [Indexed: 11/01/2023] Open
Abstract
Apical extrusion is a tissue-intrinsic process that allows epithelia to eliminate unfit or surplus cells. This is exemplified by the early extrusion of apoptotic cells, which is critical to maintain the epithelial barrier and prevent inflammation. Apoptotic extrusion is an active mechanical process, which involves mechanotransduction between apoptotic cells and their neighbors, as well as local changes in tissue mechanics. Here we report that the preexisting mechanical tension at adherens junctions (AJs) conditions the efficacy of apoptotic extrusion. Specifically, increasing baseline mechanical tension by overexpression of a phosphomimetic Myosin II regulatory light chain (MRLC) compromises apoptotic extrusion. This occurs when tension is increased in either the apoptotic cell or its surrounding epithelium. Further, we find that the proinflammatory cytokine, TNFα, stimulates Myosin II and increases baseline AJ tension to disrupt apical extrusion, causing apoptotic cells to be retained in monolayers. Importantly, reversal of mechanical tension with an inhibitory MRLC mutant or tropomyosin inhibitors is sufficient to restore apoptotic extrusion in TNFα-treated monolayers. Together, these findings demonstrate that baseline levels of tissue tension are important determinants of apoptotic extrusion, which can potentially be coopted by pathogenetic factors to disrupt the homeostatic response of epithelia to apoptosis.
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Affiliation(s)
- Zoya Mann
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia 4072
| | - Fayth Lim
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia 4072
| | - Suzie Verma
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia 4072
| | - Bageshri N. Nanavati
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia 4072
| | - Julie M. Davies
- Mater Research – The University of Queensland, Woolloongabba, Queensland, Australia 4102
| | - Jakob Begun
- Mater Research – The University of Queensland, Woolloongabba, Queensland, Australia 4102
- Department of Gastroenterology, Mater Hospital Brisbane, South Brisbane, Australia 4101
| | - Edna C. Hardeman
- School of Biomedical Sciences, Faculty of Medicine and Health, Univeristy of New South Wales Sydney, New South Wales, Australia 2052
| | - Peter W. Gunning
- School of Biomedical Sciences, Faculty of Medicine and Health, Univeristy of New South Wales Sydney, New South Wales, Australia 2052
| | - Deepa Subramanyam
- National Centre for Cell Science, Savitribai Phule Pune University, Pune 411007, India
| | - Alpha S. Yap
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia 4072
| | - Kinga Duszyc
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia 4072
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