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Mellouk N, Lensen A, Lopez-Montero N, Gil M, Valenzuela C, Klinkert K, Moneron G, Swistak L, DiGregorio D, Echard A, Enninga J. Post-translational targeting of Rab35 by the effector IcsB of Shigella determines intracellular bacterial niche formation. Cell Rep 2024; 43:114034. [PMID: 38568808 DOI: 10.1016/j.celrep.2024.114034] [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: 12/13/2022] [Revised: 11/12/2023] [Accepted: 03/18/2024] [Indexed: 04/05/2024] Open
Abstract
Escape from the bacterial-containing vacuole (BCV) is a key step of Shigella host cell invasion. Rab GTPases subverted to in situ-formed macropinosomes in the vicinity of the BCV have been shown to promote its rupture. The involvement of the BCV itself has remained unclear. We demonstrate that Rab35 is non-canonically entrapped at the BCV. Stimulated emission depletion imaging localizes Rab35 directly on the BCV membranes before vacuolar rupture. The bacterial effector IcsB, a lysine Nε-fatty acylase, is a key regulator of Rab35-BCV recruitment, and we show post-translational acylation of Rab35 by IcsB in its polybasic region. While Rab35 and IcsB are dispensable for the first step of BCV breakage, they are needed for the unwrapping of damaged BCV remnants from Shigella. This provides a framework for understanding Shigella invasion implicating re-localization of a Rab GTPase via its bacteria-dependent post-translational modification to support the mechanical unpeeling of the BCV.
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Affiliation(s)
- Nora Mellouk
- Institut Pasteur, Université Paris Cité, CNRS UMR3691, Dynamics of Host-Pathogen Interactions Unit, 75015 Paris, France.
| | - Arthur Lensen
- Institut Pasteur, Université Paris Cité, CNRS UMR3691, Dynamics of Host-Pathogen Interactions Unit, 75015 Paris, France
| | - Noelia Lopez-Montero
- Institut Pasteur, Université Paris Cité, CNRS UMR3691, Dynamics of Host-Pathogen Interactions Unit, 75015 Paris, France
| | - Magdalena Gil
- Institut Pasteur, Université Paris Cité, CNRS UMR3691, Dynamics of Host-Pathogen Interactions Unit, 75015 Paris, France
| | - Camila Valenzuela
- Institut Pasteur, Université Paris Cité, CNRS UMR3691, Dynamics of Host-Pathogen Interactions Unit, 75015 Paris, France
| | - Kerstin Klinkert
- Institut Pasteur, Université de Paris Cité, CNRS UMR3691, Membrane Traffic and Cell Division Unit, 75015 Paris, France
| | - Gael Moneron
- Institut Pasteur, CNRS UMR3571, Synapse and Circuit Dynamics Unit, 75015 Paris, France
| | - Léa Swistak
- Institut Pasteur, Université Paris Cité, CNRS UMR3691, Dynamics of Host-Pathogen Interactions Unit, 75015 Paris, France
| | - David DiGregorio
- Institut Pasteur, CNRS UMR3571, Synapse and Circuit Dynamics Unit, 75015 Paris, France
| | - Arnaud Echard
- Institut Pasteur, Université de Paris Cité, CNRS UMR3691, Membrane Traffic and Cell Division Unit, 75015 Paris, France
| | - Jost Enninga
- Institut Pasteur, Université Paris Cité, CNRS UMR3691, Dynamics of Host-Pathogen Interactions Unit, 75015 Paris, France.
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2
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Tran Van Nhieu G, Latour-Lambert P, Enninga J. Modification of phosphoinositides by the Shigella effector IpgD during host cell infection. Front Cell Infect Microbiol 2022; 12:1012533. [PMID: 36389142 PMCID: PMC9647168 DOI: 10.3389/fcimb.2022.1012533] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/27/2022] [Indexed: 09/15/2023] Open
Abstract
Shigella, the causative agent of bacillary dysentery, subvert cytoskeletal and trafficking processes to invade and replicate in epithelial cells using an arsenal of bacterial effectors translocated through a type III secretion system. Here, we review the various roles of the type III effector IpgD, initially characterized as phosphatidylinositol 4,5 bisphosphate (PI4,5P2) 4-phosphatase. By decreasing PI4,5P2 levels, IpgD triggers the disassembly of cortical actin filaments required for bacterial invasion and cell migration. PI5P produced by IpgD further stimulates signaling pathways regulating cell survival, macropinosome formation, endosomal trafficking and dampening of immune responses. Recently, IpgD was also found to exhibit phosphotransferase activity leading to PI3,4P2 synthesis adding a new flavor to this multipotent bacterial enzyme. The substrate of IpgD, PI4,5P2 is also the main substrate hydrolyzed by endogenous phospholipases C to produce inositoltriphosphate (InsP3), a major Ca2+ second messenger. Hence, beyond the repertoire of effects associated with the direct diversion of phoshoinositides, IpgD indirectly down-regulates InsP3-mediated Ca2+ release by limiting InsP3 production. Furthermore, IpgD controls the intracellular lifestyle of Shigella promoting Rab8/11 -dependent recruitment of the exocyst at macropinosomes to remove damaged vacuolar membrane remnants and promote bacterial cytosolic escape. IpgD thus emerges as a key bacterial effector for the remodeling of host cell membranes.
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Affiliation(s)
- Guy Tran Van Nhieu
- Institute for Integrative Biology of the Cell – Centre National de la Recherche Scientifique (CNRS) UMR9198 - Institut National de la Santé et de la Recherche Médicale (Inserm) U1280, Team Calcium Signaling and Microbial Infections, Gif-sur-Yvette, France
| | - Patricia Latour-Lambert
- Institut Pasteur, Unité Dynamique des interactions hôtes-pathogènes and Centre National de la Recherche Scientifique (CNRS) UMR3691, Université de Paris Cité, Paris, France
| | - Jost Enninga
- Institut Pasteur, Unité Dynamique des interactions hôtes-pathogènes and Centre National de la Recherche Scientifique (CNRS) UMR3691, Université de Paris Cité, Paris, France
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3
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Mehto S, Jena KK, Yadav R, Priyadarsini S, Samal P, Krishna S, Dhar K, Jain A, Chauhan NR, Murmu KC, Bal R, Sahu R, Jaiswal P, Sahoo BS, Patnaik S, Kufer TA, Rusten TE, Chauhan S, Prasad P, Chauhan S. Selective autophagy of RIPosomes maintains innate immune homeostasis during bacterial infection. EMBO J 2022; 41:e111289. [PMID: 36221902 PMCID: PMC9713718 DOI: 10.15252/embj.2022111289] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 01/15/2023] Open
Abstract
The NOD1/2-RIPK2 is a key cytosolic signaling complex that activates NF-κB pro-inflammatory response against invading pathogens. However, uncontrolled NF-κB signaling can cause tissue damage leading to chronic diseases. The mechanisms by which the NODs-RIPK2-NF-κB innate immune axis is activated and resolved remain poorly understood. Here, we demonstrate that bacterial infection induces the formation of endogenous RIPK2 oligomers (RIPosomes) that are self-assembling entities that coat the bacteria to induce NF-κB response. Next, we show that autophagy proteins IRGM and p62/SQSTM1 physically interact with NOD1/2, RIPK2 and RIPosomes to promote their selective autophagy and limit NF-κB activation. IRGM suppresses RIPK2-dependent pro-inflammatory programs induced by Shigella and Salmonella. Consistently, the therapeutic inhibition of RIPK2 ameliorates Shigella infection- and DSS-induced gut inflammation in Irgm1 KO mice. This study identifies a unique mechanism where the innate immune proteins and autophagy machinery are recruited together to the bacteria for defense as well as for maintaining immune homeostasis.
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Affiliation(s)
- Subhash Mehto
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia
| | - Kautilya Kumar Jena
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia,Present address:
Division of Immunology, Boston Children's HospitalHarvard Medical SchoolBostonMAUSA
| | - Rina Yadav
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia,Regional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
| | | | - Pallavi Samal
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia
| | - Sivaram Krishna
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia,Regional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
| | - Kollori Dhar
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia,Regional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
| | - Ashish Jain
- Centre for Cancer Cell Reprogramming, Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway,Department of Molecular Cell Biology, Institute for Cancer ResearchOslo University HospitalOsloNorway
| | - Nishant Ranjan Chauhan
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia
| | - Krushna C Murmu
- Epigenetic and Chromatin Biology UnitInstitute of Life SciencesBhubaneswarIndia
| | - Ramyasingh Bal
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia,School of BiotechnologyKIIT UniversityBhubaneswarIndia
| | - Rinku Sahu
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia,Regional Centre for Biotechnology, NCR Biotech Science ClusterFaridabadIndia
| | - Pundrik Jaiswal
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia
| | | | | | - Thomas A Kufer
- Department of Immunology, Institute of Nutritional MedicineUniversity of HohenheimStuttgartGermany
| | - Tor Erik Rusten
- Centre for Cancer Cell Reprogramming, Institute of Clinical Medicine, Faculty of MedicineUniversity of OsloOsloNorway,Department of Molecular Cell Biology, Institute for Cancer ResearchOslo University HospitalOsloNorway
| | - Swati Chauhan
- Epigenetic and Chromatin Biology UnitInstitute of Life SciencesBhubaneswarIndia
| | - Punit Prasad
- Epigenetic and Chromatin Biology UnitInstitute of Life SciencesBhubaneswarIndia
| | - Santosh Chauhan
- Cell Biology and Infectious Diseases Unit, Department of Infectious Disease BiologyInstitute of Life SciencesBhubaneswarIndia,CSIR–Centre For Cellular And Molecular Biology (CCMB)HyderabadIndia
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4
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O’Sullivan MJ, Lindsay AJ. The Endosomal Recycling Pathway-At the Crossroads of the Cell. Int J Mol Sci 2020; 21:ijms21176074. [PMID: 32842549 PMCID: PMC7503921 DOI: 10.3390/ijms21176074] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 12/14/2022] Open
Abstract
The endosomal recycling pathway lies at the heart of the membrane trafficking machinery in the cell. It plays a central role in determining the composition of the plasma membrane and is thus critical for normal cellular homeostasis. However, defective endosomal recycling has been linked to a wide range of diseases, including cancer and some of the most common neurological disorders. It is also frequently subverted by many diverse human pathogens in order to successfully infect cells. Despite its importance, endosomal recycling remains relatively understudied in comparison to the endocytic and secretory transport pathways. A greater understanding of the molecular mechanisms that support transport through the endosomal recycling pathway will provide deeper insights into the pathophysiology of disease and will likely identify new approaches for their detection and treatment. This review will provide an overview of the normal physiological role of the endosomal recycling pathway, describe the consequences when it malfunctions, and discuss potential strategies for modulating its activity.
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5
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Coppens I, Romano JD. Sitting in the driver's seat: Manipulation of mammalian cell Rab GTPase functions by apicomplexan parasites. Biol Cell 2020; 112:187-195. [DOI: 10.1111/boc.201900107] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/26/2020] [Accepted: 03/09/2020] [Indexed: 01/06/2023]
Affiliation(s)
- Isabelle Coppens
- Department of Molecular Microbiology and Immunology Johns Hopkins University Bloomberg School of Public Health Baltimore MD 21205 USA
| | - Julia D. Romano
- Department of Molecular Microbiology and Immunology Johns Hopkins University Bloomberg School of Public Health Baltimore MD 21205 USA
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6
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Allgood SC, Neunuebel MR. The recycling endosome and bacterial pathogens. Cell Microbiol 2018; 20:e12857. [PMID: 29748997 PMCID: PMC5993623 DOI: 10.1111/cmi.12857] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 04/05/2018] [Accepted: 04/27/2018] [Indexed: 12/29/2022]
Abstract
Bacterial pathogens have developed a wide range of strategies to survive within human cells. A number of pathogens multiply in a vacuolar compartment, whereas others can rupture the vacuole and replicate in the host cytosol. A common theme among many bacterial pathogens is the use of specialised secretion systems to deliver effector proteins into the host cell. These effectors can manipulate the host's membrane trafficking pathways to remodel the vacuole into a replication-permissive niche and prevent degradation. As master regulators of eukaryotic membrane traffic, Rab GTPases are principal targets of bacterial effectors. This review highlights the manipulation of Rab GTPases that regulate host recycling endocytosis by several bacterial pathogens, including Chlamydia pneumoniae, Chlamydia trachomatis, Shigella flexneri, Salmonella enterica serovar Typhimurium, Uropathogenic Escherichia coli, and Legionella pneumophila. Recycling endocytosis plays key roles in a variety of cellular aspects such as nutrient uptake, immunity, cell division, migration, and adhesion. Though much remains to be understood about the molecular basis and the biological relevance of bacterial pathogens exploiting Rab GTPases, current knowledge supports the notion that endocytic recycling Rab GTPases are differentially targeted to avoid degradation and support bacterial replication. Thus, future studies of the interactions between bacterial pathogens and host endocytic recycling pathways are poised to deepen our understanding of bacterial survival strategies.
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Affiliation(s)
| | - M. Ramona Neunuebel
- Department of Biological Sciences, University of Delaware, Newark, Delaware, USA
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