1
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Yoon KN, Lee HG, Yeom SJ, Kim SS, Park JH, Song BS, Yi SW, Do YJ, Oh B, Oh SI, Eun JB, Park SH, Lee JH, Kim HB, Lee JH, Hur TY, Kim JK. Lactiplantibacillus argentoratensis AGMB00912 alleviates salmonellosis and modulates gut microbiota in weaned piglets: a pilot study. Sci Rep 2024; 14:15466. [PMID: 38965336 PMCID: PMC11224356 DOI: 10.1038/s41598-024-66092-z] [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: 02/13/2024] [Accepted: 06/27/2024] [Indexed: 07/06/2024] Open
Abstract
This study aimed to evaluate the efficacy of Lactiplantibacillus argentoratensis AGMB00912 (LA) in reducing Salmonella Typhimurium infection in weaned piglets. The investigation focused on the influence of LA on the gut microbiota composition, growth performance, and Salmonella fecal shedding. The results indicated that LA supplementation significantly improved average daily gain and reduced the prevalence and severity of diarrhea. Fecal analysis revealed reduced Salmonella shedding in the LA-supplemented group. Furthermore, LA notably altered the composition of the gut microbiota, increasing the levels of beneficial Bacillus and decreasing those of harmful Proteobacteria and Spirochaetes. Histopathological examination showed less intestinal damage in LA-treated piglets than in the controls. The study also observed that LA affected metabolic functions related to carbohydrate, amino acid, and fatty acid metabolism, thereby enhancing gut health and resilience against infection. Short-chain fatty acid concentrations in the feces were higher in the LA group, suggesting improved gut microbial activity. LA supplementation enriched the population of beneficial bacteria, including Streptococcus, Clostridium, and Bifidobacterium, while reducing the number of harmful bacteria, such as Escherichia and Campylobacter. These findings indicate the potential of LA as a probiotic alternative for swine nutrition, offering protective effects to the gut microbiota against Salmonella infection.
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Affiliation(s)
- Ki-Nam Yoon
- Research Division for Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
- Department of Food Science and Technology, Graduate School of Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Han Gyu Lee
- Division of Animal Diseases and Health, National Institute of Animal Science, Rural Development Administration, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea
| | - Seo-Joon Yeom
- Research Division for Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Sang-Su Kim
- Research Division for Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Jong-Heum Park
- Research Division for Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Beom-Seok Song
- Research Division for Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Seung-Won Yi
- Division of Animal Diseases and Health, National Institute of Animal Science, Rural Development Administration, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea
| | - Yoon Jung Do
- Division of Animal Diseases and Health, National Institute of Animal Science, Rural Development Administration, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea
| | - Byungkwan Oh
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeollabuk-do, 54596, Republic of Korea
| | - Sang-Ik Oh
- Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Jeollabuk-do, 54596, Republic of Korea
| | - Jong-Bang Eun
- Department of Food Science and Technology, Graduate School of Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Seung-Hwan Park
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, 56212, Republic of Korea
| | - Ju Huck Lee
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology, Jeongeup-si, 56212, Republic of Korea
| | - Hyeun Bum Kim
- Department of Animal Resources Science, Dankook University, Cheonan, 31116, Republic of Korea
| | - Ju-Hoon Lee
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Research Institute of Agriculture and Life Sciences, Center for Food and Bioconvergence, Seoul National University, Seoul, 08826, Republic of Korea
| | - Tai-Young Hur
- Division of Animal Diseases and Health, National Institute of Animal Science, Rural Development Administration, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea.
| | - Jae-Kyung Kim
- Research Division for Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea.
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2
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Prislusky MI, Lam JGT, Contreras VR, Ng M, Chamberlain M, Pathak-Sharma S, Fields M, Zhang X, Amer AO, Seveau S. The septin cytoskeleton is required for plasma membrane repair. EMBO Rep 2024:10.1038/s44319-024-00195-6. [PMID: 38969946 DOI: 10.1038/s44319-024-00195-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/30/2024] [Accepted: 06/07/2024] [Indexed: 07/07/2024] Open
Abstract
Plasma membrane repair is a fundamental homeostatic process of eukaryotic cells. Here, we report a new function for the conserved cytoskeletal proteins known as septins in the repair of cells perforated by pore-forming toxins or mechanical disruption. Using a silencing RNA screen, we identified known repair factors (e.g. annexin A2, ANXA2) and novel factors such as septin 7 (SEPT7) that is essential for septin assembly. Upon plasma membrane injury, the septin cytoskeleton is extensively redistributed to form submembranous domains arranged as knob and loop structures containing F-actin, myosin IIA, S100A11, and ANXA2. Formation of these domains is Ca2+-dependent and correlates with plasma membrane repair efficiency. Super-resolution microscopy revealed that septins and F-actin form intertwined filaments associated with ANXA2. Depletion of SEPT7 prevented ANXA2 recruitment and formation of submembranous actomyosin domains. However, ANXA2 depletion had no effect on domain formation. Collectively, our data support a novel septin-based mechanism for resealing damaged cells, in which the septin cytoskeleton plays a key structural role in remodeling the plasma membrane by promoting the formation of SEPT/F-actin/myosin IIA/ANXA2/S100A11 repair domains.
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Affiliation(s)
- M Isabella Prislusky
- Department of Microbial Infection & Immunity, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Jonathan G T Lam
- Department of Microbial Infection & Immunity, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Viviana Ruiz Contreras
- Department of Microbial Infection & Immunity, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
- Grupo Investigaciones Biomédicas, Universidad de Sucre, Sincelejo, Sucre, Colombia
| | - Marilynn Ng
- Department of Microbial Infection & Immunity, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Madeline Chamberlain
- Department of Microbial Infection & Immunity, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Sarika Pathak-Sharma
- Department of Microbial Infection & Immunity, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Madalyn Fields
- Department of Microbial Infection & Immunity, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Xiaoli Zhang
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA
| | - Amal O Amer
- Department of Microbial Infection & Immunity, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | - Stephanie Seveau
- Department of Microbial Infection & Immunity, Wexner Medical Center, The Ohio State University, Columbus, OH, USA.
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3
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Lei Y, Klionsky DJ. A delicate decision between repair and degradation of damaged lysosomes. Autophagy 2024; 20:1471-1472. [PMID: 38744436 PMCID: PMC11210907 DOI: 10.1080/15548627.2024.2350738] [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] [Indexed: 05/16/2024] Open
Abstract
The destination of a damaged lysosome is either being repaired if the damage is small or degraded through a lysosome-specific macroautophagy/autophagy pathway named lysophagy when the damage is too extensive to repair. Even though previous studies report lumenal glycan exposure during lysosome damage as a signal to trigger lysophagy, it is possibly beneficial for cells to initiate lysophagy earlier than membrane rupture. In a recently published article, Gahlot et al. determined that SPART/SPG20 senses lipid-packing defects and recruits and activates the ubiquitin ligase ITCH, which labels damaged lysosomes with ubiquitin chains to initiate lysophagy.
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Affiliation(s)
- Yuchen Lei
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Daniel J. Klionsky
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
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4
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Zuo J, Peng A, Wu P, Chen J, Yao C, Pan J, Zhu E, Weng Y, Zhang K, Feng H, Jin Z, Qian Z. Charge-regulated fluorescent anchors enable high-fidelity tracking of plasma membrane dynamics during biological events. Chem Sci 2024; 15:8934-8945. [PMID: 38873067 PMCID: PMC11168104 DOI: 10.1039/d4sc01423e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 05/04/2024] [Indexed: 06/15/2024] Open
Abstract
Many biological processes generally require long-term visualization tools for time-scale dynamic changes of the plasma membrane, but there is still a lack of design rules for such imaging tools based on small-molecule fluorescent probes. Herein, we revealed the key regulatory roles of charge number and species of fluorescent dyes in the anchoring ability of the plasma membrane and found that the introduction of multi-charged units and appropriate charge species is often required for fluorescent dyes with strong plasma membrane anchoring ability by systematically investigating the structure-function relationship of cyanostyrylpyridium (CSP) dyes with different charge numbers and species and their imaging performance for the plasma membrane. The CSP-DBO dye constructed exhibits strong plasma membrane anchoring ability in staining the plasma membrane of cells, in addition to many other advantages such as excellent biocompatibility and general universality of cell types. Such a fluorescent anchor has been successfully used to monitor chemically induced plasma membrane damage and dynamically track various cellular biological events such as cell fusion and cytokinesis over a long period of time by continuously monitoring the dynamic morphological changes of the plasma membrane, providing a valuable precise visualization tool to study the physiological response to chemical stimuli and reveal the structural morphological changes and functions of the plasma membrane during these important biological events from a dynamic perspective. Furthermore, CSP-DBO exhibits excellent biocompatibility and imaging capability in vivo such as labelling the plasma membrane in vivo and monitoring the metabolic process of lipofuscin as an aging indicator.
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Affiliation(s)
- Jiaqi Zuo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Material Sciences, Zhejiang Normal University Yingbin Road 688 Jinhua 321004 China
| | - Aohui Peng
- College of Life Science, Zhejiang Normal University YIngbin Road 688 JInhua 321004 China
| | - Penglei Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Material Sciences, Zhejiang Normal University Yingbin Road 688 Jinhua 321004 China
| | - Junyi Chen
- College of Life Science, Zhejiang Normal University YIngbin Road 688 JInhua 321004 China
| | - Chuangye Yao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Material Sciences, Zhejiang Normal University Yingbin Road 688 Jinhua 321004 China
| | - Junjun Pan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Material Sciences, Zhejiang Normal University Yingbin Road 688 Jinhua 321004 China
| | - Engao Zhu
- College of Life Science, Zhejiang Normal University YIngbin Road 688 JInhua 321004 China
| | - Yingye Weng
- College of Life Science, Zhejiang Normal University YIngbin Road 688 JInhua 321004 China
| | - Kewei Zhang
- College of Life Science, Zhejiang Normal University YIngbin Road 688 JInhua 321004 China
| | - Hui Feng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Material Sciences, Zhejiang Normal University Yingbin Road 688 Jinhua 321004 China
| | - Zhigang Jin
- College of Life Science, Zhejiang Normal University YIngbin Road 688 JInhua 321004 China
| | - Zhaosheng Qian
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Material Sciences, Zhejiang Normal University Yingbin Road 688 Jinhua 321004 China
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Hsieh HC, Huang IH, Chang SW, Chen PL, Su YC, Wang S, Tsai WJ, Chen PH, Aroian RV, Chen CS. PRMT-7/PRMT7 activates HLH-30/TFEB to guard plasma membrane integrity compromised by bacterial pore-forming toxins. Autophagy 2024; 20:1335-1358. [PMID: 38261662 PMCID: PMC11210913 DOI: 10.1080/15548627.2024.2306655] [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: 07/10/2023] [Accepted: 01/13/2024] [Indexed: 01/25/2024] Open
Abstract
Bacterial pore-forming toxins (PFTs) that disrupt host plasma membrane integrity (PMI) significantly contribute to the virulence of various pathogens. However, how host cells protect PMI in response to PFT perforation in vivo remains obscure. Previously, we demonstrated that the HLH-30/TFEB-dependent intrinsic cellular defense (INCED) is elicited by PFT to maintain PMI in Caenorhabditis elegans intestinal epithelium. Yet, the molecular mechanism for the full activation of HLH-30/TFEB by PFT remains elusive. Here, we reveal that PRMT-7 (protein arginine methyltransferase-7) is indispensable to the nuclear transactivation of HLH-30 elicited by PFTs. We demonstrate that PRMT-7 participates in the methylation of HLH-30 on its RAG complex binding domain to facilitate its nuclear localization and activation. Moreover, we showed that PRMT7 is evolutionarily conserved to regulate TFEB cellular localization and repair plasma damage caused by PFTs in human intestinal cells. Together, our observations not only unveil a novel PRMT-7/PRMT7-dependent post-translational regulation of HLH-30/TFEB but also shed insight on the evolutionarily conserved mechanism of the INCED against PFT in metazoans.
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Affiliation(s)
- Hui-Chen Hsieh
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - I-Hsiang Huang
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shao-Wen Chang
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Po-Lin Chen
- Department of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Cheng Su
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shuying Wang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wei-Jiun Tsai
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ping-Hung Chen
- Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Raffi V. Aroian
- Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Chang-Shi Chen
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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6
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de Jong FJM, Lilien TA, Fenn DW, Wingelaar TT, van Ooij PJAM, Maitland-van der Zee AH, Hollmann MW, van Hulst RA, Brinkman P. Volatile Organic Compounds in Cellular Headspace after Hyperbaric Oxygen Exposure: An In Vitro Pilot Study. Metabolites 2024; 14:281. [PMID: 38786758 PMCID: PMC11123173 DOI: 10.3390/metabo14050281] [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: 04/02/2024] [Revised: 05/01/2024] [Accepted: 05/06/2024] [Indexed: 05/25/2024] Open
Abstract
Volatile organic compounds (VOCs) might be associated with pulmonary oxygen toxicity (POT). This pilot study aims to identify VOCs linked to oxidative stress employing an in vitro model of alveolar basal epithelial cells exposed to hyperbaric and hyperoxic conditions. In addition, the feasibility of this in vitro model for POT biomarker research was evaluated. The hyperbaric exposure protocol, similar to the U.S. Navy Treatment Table 6, was conducted on human alveolar basal epithelial cells, and the headspace VOCs were analyzed using gas chromatography-mass spectrometry. Three compounds (nonane [p = 0.005], octanal [p = 0.009], and decane [p = 0.018]), of which nonane and decane were also identified in a previous in vivo study with similar hyperbaric exposure, varied significantly between the intervention group which was exposed to 100% oxygen and the control group which was exposed to compressed air. VOC signal intensities were lower in the intervention group, but cellular stress markers (IL8 and LDH) confirmed increased stress and injury in the intervention group. Despite the observed reductions in compound expression, the model holds promise for POT biomarker exploration, emphasizing the need for further investigation into the complex relationship between VOCs and oxidative stress.
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Affiliation(s)
- Feiko J. M. de Jong
- Royal Netherlands Navy Diving and Submarine Medical Centre, 1780 CA Den Helder, The Netherlands
- Department of Anesthesiology, Amsterdam UMC, Location AMC, 1100 DD Amsterdam, The Netherlands
| | - Thijs A. Lilien
- Department of Pediatric Intensive Care, Amsterdam UMC, Location Emma Children’s Hospital, 1100 DD Amsterdam, The Netherlands
| | - Dominic W. Fenn
- Department of Pulmonology, Amsterdam UMC, Location AMC, 1100 DD Amsterdam, The Netherlands
| | - Thijs T. Wingelaar
- Royal Netherlands Navy Diving and Submarine Medical Centre, 1780 CA Den Helder, The Netherlands
- Department of Anesthesiology, Amsterdam UMC, Location AMC, 1100 DD Amsterdam, The Netherlands
| | - Pieter-Jan A. M. van Ooij
- Royal Netherlands Navy Diving and Submarine Medical Centre, 1780 CA Den Helder, The Netherlands
- Department of Pulmonology, Amsterdam UMC, Location AMC, 1100 DD Amsterdam, The Netherlands
| | | | - Markus W. Hollmann
- Department of Anesthesiology, Amsterdam UMC, Location AMC, 1100 DD Amsterdam, The Netherlands
| | - Rob A. van Hulst
- Department of Anesthesiology, Amsterdam UMC, Location AMC, 1100 DD Amsterdam, The Netherlands
| | - Paul Brinkman
- Department of Pulmonology, Amsterdam UMC, Location AMC, 1100 DD Amsterdam, The Netherlands
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7
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Franzkoch R, Anand A, Breitsprecher L, Psathaki OE, Barisch C. Resolving exit strategies of mycobacteria in Dictyostelium discoideum by combining high-pressure freezing with 3D-correlative light and electron microscopy. Mol Microbiol 2024; 121:593-604. [PMID: 38063129 DOI: 10.1111/mmi.15205] [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: 05/15/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 03/12/2024]
Abstract
The infection course of Mycobacterium tuberculosis is highly dynamic and comprises sequential stages that require damaging and crossing of several membranes to enable the translocation of the bacteria into the cytosol or their escape from the host. Many important breakthroughs such as the restriction of mycobacteria by the autophagy pathway and the recruitment of sophisticated host repair machineries to the Mycobacterium-containing vacuole have been gained in the Dictyostelium discoideum/M. marinum system. Despite the availability of well-established light and advanced electron microscopy techniques in this system, a correlative approach integrating both methods with near-native ultrastructural preservation is currently lacking. This is most likely due to the low ability of D. discoideum to adhere to surfaces, which results in cell loss even after fixation. To address this problem, we improved the adhesion of cells and developed a straightforward and convenient workflow for 3D-correlative light and electron microscopy. This approach includes high-pressure freezing, which is an excellent technique for preserving membranes. Thus, our method allows to monitor the ultrastructural aspects of vacuole escape which is of central importance for the survival and dissemination of bacterial pathogens.
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Affiliation(s)
- Rico Franzkoch
- iBiOs-integrated Bioimaging Facility, University of Osnabrück, Osnabrück, Germany
- Center of Cellular Nanoanalytics, Osnabrück, Germany
- Division of Microbiology, Department of Biology, University of Osnabrück, Osnabrück, Germany
| | - Aby Anand
- Center of Cellular Nanoanalytics, Osnabrück, Germany
- Division of Molecular Infection Biology, Department of Biology, University of Osnabrück, Osnabrück, Germany
- Centre for Structural Systems Biology, Hamburg, Germany
- Division of Host-Microbe Interactome, Research Center Borstel - Leibniz Lung Center (FZB), Borstel, Germany
- Department of Biology, University of Hamburg, Hamburg, Germany
| | - Leonhard Breitsprecher
- iBiOs-integrated Bioimaging Facility, University of Osnabrück, Osnabrück, Germany
- Center of Cellular Nanoanalytics, Osnabrück, Germany
- Division of Microbiology, Department of Biology, University of Osnabrück, Osnabrück, Germany
| | - Olympia E Psathaki
- iBiOs-integrated Bioimaging Facility, University of Osnabrück, Osnabrück, Germany
- Center of Cellular Nanoanalytics, Osnabrück, Germany
| | - Caroline Barisch
- Center of Cellular Nanoanalytics, Osnabrück, Germany
- Division of Molecular Infection Biology, Department of Biology, University of Osnabrück, Osnabrück, Germany
- Centre for Structural Systems Biology, Hamburg, Germany
- Division of Host-Microbe Interactome, Research Center Borstel - Leibniz Lung Center (FZB), Borstel, Germany
- Department of Biology, University of Hamburg, Hamburg, Germany
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8
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Yumura S. Wound Repair of the Cell Membrane: Lessons from Dictyostelium Cells. Cells 2024; 13:341. [PMID: 38391954 PMCID: PMC10886852 DOI: 10.3390/cells13040341] [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: 12/20/2023] [Revised: 01/30/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
The cell membrane is frequently subjected to damage, either through physical or chemical means. The swift restoration of the cell membrane's integrity is crucial to prevent the leakage of intracellular materials and the uncontrolled influx of extracellular ions. Consequently, wound repair plays a vital role in cell survival, akin to the importance of DNA repair. The mechanisms involved in wound repair encompass a series of events, including ion influx, membrane patch formation, endocytosis, exocytosis, recruitment of the actin cytoskeleton, and the elimination of damaged membrane sections. Despite the absence of a universally accepted general model, diverse molecular models have been proposed for wound repair in different organisms. Traditional wound methods not only damage the cell membrane but also impact intracellular structures, including the underlying cortical actin networks, microtubules, and organelles. In contrast, the more recent improved laserporation selectively targets the cell membrane. Studies on Dictyostelium cells utilizing this method have introduced a novel perspective on the wound repair mechanism. This review commences by detailing methods for inducing wounds and subsequently reviews recent developments in the field.
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Affiliation(s)
- Shigehiko Yumura
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8511, Japan
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9
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Radulovic M, Stenmark H. Lysophagy prevents neurotoxic aggregate transmission. Proc Natl Acad Sci U S A 2024; 121:e2321181121. [PMID: 38190545 PMCID: PMC10801843 DOI: 10.1073/pnas.2321181121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024] Open
Affiliation(s)
- Maja Radulovic
- Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello, OsloN-0379, Norway
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello, OsloN-0379, Norway
| | - Harald Stenmark
- Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello, OsloN-0379, Norway
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello, OsloN-0379, Norway
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10
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Prislusky MI, Lam JG, Contreras VR, Ng M, Chamberlain M, Pathak-Sharma S, Fields M, Zhang X, Amer AO, Seveau S. The Septin Cytoskeleton is Required for Plasma Membrane Repair. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.07.12.548547. [PMID: 37503091 PMCID: PMC10369955 DOI: 10.1101/2023.07.12.548547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Mammalian cells are frequently exposed to mechanical and biochemical stressors resulting in plasma membrane injuries. Repair mechanisms reseal the plasma membrane to restore homeostasis and prevent cell death. In the present work, a silencing RNA screen was performed to uncover plasma membrane repair mechanisms of cells exposed to a pore-forming toxin (listeriolysin O). This screen identified molecules previously known to repair the injured plasma membrane such as annexin A2 (ANXA2) as well as novel plasma membrane repair candidate proteins. Of the novel candidates, we focused on septin 7 (SEPT7) because the septins are an important family of conserved eukaryotic cytoskeletal proteins. Using diverse experimental approaches, we established for the first time that SEPT7 plays a general role in plasma membrane repair of cells perforated by pore-forming toxins and mechanical wounding. Remarkably, upon cell injury, the septin cytoskeleton is extensively redistributed in a Ca 2+ -dependent fashion, a hallmark of plasma membrane repair machineries. The septins reorganize into subplasmalemmal domains arranged as knob and loop (or ring) structures containing F-actin, myosin II, and annexin A2 (ANXA2) and protrude from the cell surface. Importantly, the formation of these domains correlates with the plasma membrane repair efficiency. Super-resolution microscopy shows that septins and actin are arranged in intertwined filaments associated with ANXA2. Silencing SEPT7 expression prevented the formation of the F-actin/myosin II/ANXA2 domains, however, silencing expression of ANXA2 had no observable effect on their formation. These results highlight the key structural role of the septins in remodeling the plasma membrane and in the recruitment of the repair molecule ANXA2. Collectively, our data support a novel model in which the septin cytoskeleton acts as a scaffold to promote the formation of plasma membrane repair domains containing contractile F-actin and annexin A2.
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11
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Anand A, Mazur AC, Rosell-Arevalo P, Franzkoch R, Breitsprecher L, Listian SA, Hüttel SV, Müller D, Schäfer DG, Vormittag S, Hilbi H, Maniak M, Gutierrez MG, Barisch C. ER-dependent membrane repair of mycobacteria-induced vacuole damage. mBio 2023; 14:e0094323. [PMID: 37676004 PMCID: PMC10653851 DOI: 10.1128/mbio.00943-23] [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: 04/14/2023] [Accepted: 07/13/2023] [Indexed: 09/08/2023] Open
Abstract
IMPORTANCE Tuberculosis still remains a global burden and is one of the top infectious diseases from a single pathogen. Mycobacterium tuberculosis, the causative agent, has perfected many ways to replicate and persist within its host. While mycobacteria induce vacuole damage to evade the toxic environment and eventually escape into the cytosol, the host recruits repair machineries to restore the MCV membrane. However, how lipids are delivered for membrane repair is poorly understood. Using advanced fluorescence imaging and volumetric correlative approaches, we demonstrate that this involves the recruitment of the endoplasmic reticulum (ER)-Golgi lipid transfer protein OSBP8 in the Dictyostelium discoideum/Mycobacterium marinum system. Strikingly, depletion of OSBP8 affects lysosomal function accelerating mycobacterial growth. This indicates that an ER-dependent repair pathway constitutes a host defense mechanism against intracellular pathogens such as M. tuberculosis.
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Affiliation(s)
- Aby Anand
- Division of Molecular Infection Biology, Department of Biology & Center of Cellular Nanoanalytics, University of Osnabrück, Osnabrück, Germany
| | - Anna-Carina Mazur
- Division of Molecular Infection Biology, Department of Biology & Center of Cellular Nanoanalytics, University of Osnabrück, Osnabrück, Germany
| | - Patricia Rosell-Arevalo
- Host–Pathogen Interactions in Tuberculosis Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Rico Franzkoch
- Integrated Bioimaging Facility, Center of Cellular Nanoanalytics, University of Osnabrück, Osnabrück, Germany
| | - Leonhard Breitsprecher
- Integrated Bioimaging Facility, Center of Cellular Nanoanalytics, University of Osnabrück, Osnabrück, Germany
| | - Stevanus A. Listian
- Division of Molecular Infection Biology, Department of Biology & Center of Cellular Nanoanalytics, University of Osnabrück, Osnabrück, Germany
| | - Sylvana V. Hüttel
- Division of Molecular Infection Biology, Department of Biology & Center of Cellular Nanoanalytics, University of Osnabrück, Osnabrück, Germany
| | - Danica Müller
- Division of Molecular Infection Biology, Department of Biology & Center of Cellular Nanoanalytics, University of Osnabrück, Osnabrück, Germany
| | - Deise G. Schäfer
- Division of Molecular Infection Biology, Department of Biology & Center of Cellular Nanoanalytics, University of Osnabrück, Osnabrück, Germany
| | - Simone Vormittag
- Institute of Medical Microbiology, University of Zürich, Zürich, Switzerland
| | - Hubert Hilbi
- Institute of Medical Microbiology, University of Zürich, Zürich, Switzerland
| | - Markus Maniak
- Department of Cell Biology, University of Kassel, Kassel, Germany
| | - Maximiliano G. Gutierrez
- Host–Pathogen Interactions in Tuberculosis Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Caroline Barisch
- Division of Molecular Infection Biology, Department of Biology & Center of Cellular Nanoanalytics, University of Osnabrück, Osnabrück, Germany
- Centre for Structural Systems Biology, Hamburg, Germany
- Division of Host-Microbe Interactome, Research Center Borstel, Leibniz Lung Center, Borstel, Germany
- Biology Department, University of Hamburg, Hamburg, Germany
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12
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Bramkamp M, Scheffers DJ. Bacterial membrane dynamics: Compartmentalization and repair. Mol Microbiol 2023; 120:490-501. [PMID: 37243899 DOI: 10.1111/mmi.15077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 05/29/2023]
Abstract
In every bacterial cell, the plasma membrane plays a key role in viability as it forms a selective barrier between the inside of the cell and its environment. This barrier function depends on the physical state of the lipid bilayer and the proteins embedded or associated with the bilayer. Over the past decade or so, it has become apparent that many membrane-organizing proteins and principles, which were described in eukaryote systems, are ubiquitous and play important roles in bacterial cells. In this minireview, we focus on the enigmatic roles of bacterial flotillins in membrane compartmentalization and bacterial dynamins and ESCRT-like systems in membrane repair and remodeling.
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Affiliation(s)
- Marc Bramkamp
- Institute for General Microbiology, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Dirk-Jan Scheffers
- Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen, the Netherlands
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13
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Galic M, Ungermann C, Cosentino K. Highlight: on the past and the future of cellular microcompartments. Biol Chem 2023; 404:377-378. [PMID: 36951639 DOI: 10.1515/hsz-2023-0153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Affiliation(s)
- Milos Galic
- Institute of Medical Physics and Biophysics and 'Cells in Motion' Interfaculty Centre, University of Münster, D-48149 Münster, Germany
| | - Christian Ungermann
- Department of Biology/Chemistry and Center for Cellular Nanoanalytics (CellNanOs), University of Osnabrück, D-49076 Osnabrück, Germany
| | - Katia Cosentino
- Department of Biology/Chemistry and Center for Cellular Nanoanalytics (CellNanOs), University of Osnabrück, D-49076 Osnabrück, Germany
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