101
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Wohlwend M, Laurila PP, Goeminne LJE, Lima T, Daskalaki I, Li X, von Alvensleben G, Crisol B, Mangione R, Gallart-Ayala H, Burri O, Butler S, Morris J, Turner N, Ivanisevic J, Auwerx J. Inhibition of CERS1 in skeletal muscle exacerbates age-related muscle dysfunction. eLife 2024; 12:RP90522. [PMID: 38506902 PMCID: PMC10954306 DOI: 10.7554/elife.90522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024] Open
Abstract
Age-related muscle wasting and dysfunction render the elderly population vulnerable and incapacitated, while underlying mechanisms are poorly understood. Here, we implicate the CERS1 enzyme of the de novo sphingolipid synthesis pathway in the pathogenesis of age-related skeletal muscle impairment. In humans, CERS1 abundance declines with aging in skeletal muscle cells and, correlates with biological pathways involved in muscle function and myogenesis. Furthermore, CERS1 is upregulated during myogenic differentiation. Pharmacological or genetic inhibition of CERS1 in aged mice blunts myogenesis and deteriorates aged skeletal muscle mass and function, which is associated with the occurrence of morphological features typical of inflammation and fibrosis. Ablation of the CERS1 orthologue lagr-1 in Caenorhabditis elegans similarly exacerbates the age-associated decline in muscle function and integrity. We discover genetic variants reducing CERS1 expression in human skeletal muscle and Mendelian randomization analysis in the UK biobank cohort shows that these variants reduce muscle grip strength and overall health. In summary, our findings link age-related impairments in muscle function to a reduction in CERS1, thereby underlining the importance of the sphingolipid biosynthesis pathway in age-related muscle homeostasis.
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Affiliation(s)
- Martin Wohlwend
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Pirkka-Pekka Laurila
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Ludger JE Goeminne
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Tanes Lima
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Ioanna Daskalaki
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Xiaoxu Li
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Giacomo von Alvensleben
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Barbara Crisol
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Renata Mangione
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
| | - Hector Gallart-Ayala
- Metabolomics Platform, Faculty of Biology and Medicine, University of Lausanne (UNIL)LausanneSwitzerland
| | - Olivier Burri
- Bioimaging and optics platform, École polytechnique fédérale de Lausanne (EPFL)LausanneSwitzerland
| | - Stephen Butler
- School of Chemistry, University of New South Wales SydneySydneyAustralia
| | - Jonathan Morris
- School of Chemistry, University of New South Wales SydneySydneyAustralia
| | - Nigel Turner
- Cellular Bioenergetics Laboratory, Victor Chang Cardiac Research InstituteDarlinghurstAustralia
- School of Biomedical Sciences, University of New South Wales SydneySydneyAustralia
| | - Julijana Ivanisevic
- Metabolomics Platform, Faculty of Biology and Medicine, University of Lausanne (UNIL)LausanneSwitzerland
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, École Polytechnique Fédérale de LausanneLausanneSwitzerland
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102
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Aniento F, Robinson DG. Does the KDEL receptor cycle between the Golgi and the ER? Nat Commun 2024; 15:2455. [PMID: 38509061 PMCID: PMC10954686 DOI: 10.1038/s41467-024-45849-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 01/30/2024] [Indexed: 03/22/2024] Open
Affiliation(s)
- Fernando Aniento
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Instituto Universitario de Biotecnología y Biomedicina (BIOTECMED), Universitat de València, 46100, Burjassot, Spain
| | - David G Robinson
- Centre for Organismal Studies, Univ. Heidelberg, 69120, Heidelberg, Germany.
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103
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Stilgoe A, Favre-Bulle IA, Watson ML, Gomez-Godinez V, Berns MW, Preece D, Rubinsztein-Dunlop H. Shining Light in Mechanobiology: Optical Tweezers, Scissors, and Beyond. ACS Photonics 2024; 11:917-940. [PMID: 38523746 PMCID: PMC10958612 DOI: 10.1021/acsphotonics.4c00064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/26/2024]
Abstract
Mechanobiology helps us to decipher cell and tissue functions by looking at changes in their mechanical properties that contribute to development, cell differentiation, physiology, and disease. Mechanobiology sits at the interface of biology, physics and engineering. One of the key technologies that enables characterization of properties of cells and tissue is microscopy. Combining microscopy with other quantitative measurement techniques such as optical tweezers and scissors, gives a very powerful tool for unraveling the intricacies of mechanobiology enabling measurement of forces, torques and displacements at play. We review the field of some light based studies of mechanobiology and optical detection of signal transduction ranging from optical micromanipulation-optical tweezers and scissors, advanced fluorescence techniques and optogenentics. In the current perspective paper, we concentrate our efforts on elucidating interesting measurements of forces, torques, positions, viscoelastic properties, and optogenetics inside and outside a cell attained when using structured light in combination with optical tweezers and scissors. We give perspective on the field concentrating on the use of structured light in imaging in combination with tweezers and scissors pointing out how novel developments in quantum imaging in combination with tweezers and scissors can bring to this fast growing field.
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Affiliation(s)
- Alexander
B. Stilgoe
- School of
Mathematics and Physics, The University
of Queensland, Brisbane, 4074, Australia
- ARC
CoE for Engineered Quantum Systems, The
University of Queensland, Brisbane, 4074, Australia
- ARC
CoE in Quantum Biotechnology, The University
of Queensland, 4074, Brisbane, Australia
| | - Itia A. Favre-Bulle
- School of
Mathematics and Physics, The University
of Queensland, Brisbane, 4074, Australia
- Queensland
Brain Institute, The University of Queensland, Brisbane, 4074, Australia
| | - Mark L. Watson
- School of
Mathematics and Physics, The University
of Queensland, Brisbane, 4074, Australia
- ARC
CoE for Engineered Quantum Systems, The
University of Queensland, Brisbane, 4074, Australia
| | - Veronica Gomez-Godinez
- Institute
of Engineering and Medicine, University
of California San Diego, San Diego, California 92093, United States
| | - Michael W. Berns
- Institute
of Engineering and Medicine, University
of California San Diego, San Diego, California 92093, United States
- Beckman
Laser Institute, University of California
Irvine, Irvine, California 92612, United States
| | - Daryl Preece
- Beckman
Laser Institute, University of California
Irvine, Irvine, California 92612, United States
| | - Halina Rubinsztein-Dunlop
- School of
Mathematics and Physics, The University
of Queensland, Brisbane, 4074, Australia
- ARC
CoE for Engineered Quantum Systems, The
University of Queensland, Brisbane, 4074, Australia
- ARC
CoE in Quantum Biotechnology, The University
of Queensland, 4074, Brisbane, Australia
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104
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Coffin AB, Dale E, Molano O, Pederson A, Costa EK, Chen J. Age-related changes in the zebrafish and killifish inner ear and lateral line. Sci Rep 2024; 14:6670. [PMID: 38509148 PMCID: PMC10954678 DOI: 10.1038/s41598-024-57182-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 03/14/2024] [Indexed: 03/22/2024] Open
Abstract
Age-related hearing loss (ARHL) is a debilitating disorder for millions worldwide. While there are multiple underlying causes of ARHL, one common factor is loss of sensory hair cells. In mammals, new hair cells are not produced postnatally and do not regenerate after damage, leading to permanent hearing impairment. By contrast, fish produce hair cells throughout life and robustly regenerate these cells after toxic insult. Despite these regenerative abilities, zebrafish show features of ARHL. Here, we show that aged zebrafish of both sexes exhibited significant hair cell loss and decreased cell proliferation in all inner ear epithelia (saccule, lagena, utricle). Ears from aged zebrafish had increased expression of pro-inflammatory genes and significantly more macrophages than ears from young adult animals. Aged zebrafish also had fewer lateral line hair cells and less cell proliferation than young animals, although lateral line hair cells still robustly regenerated following damage. Unlike zebrafish, African turquoise killifish (an emerging aging model) only showed hair cell loss in the saccule of aged males, but both sexes exhibit age-related changes in the lateral line. Our work demonstrates that zebrafish exhibit key features of auditory aging, including hair cell loss and increased inflammation. Further, our finding that aged zebrafish have fewer lateral line hair cells yet retain regenerative capacity, suggests a decoupling of homeostatic hair cell addition from regeneration following acute trauma. Finally, zebrafish and killifish show species-specific strategies for lateral line homeostasis that may inform further comparative research on aging in mechanosensory systems.
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Affiliation(s)
- Allison B Coffin
- College of Arts and Sciences, Washington State University Vancouver, Vancouver, WA, 98686, USA.
- Department of Integrative Physiology and Neuroscience, Washington State University Vancouver, Vancouver, WA, 98686, USA.
| | - Emily Dale
- College of Arts and Sciences, Washington State University Vancouver, Vancouver, WA, 98686, USA
- Neuroimmunology Research, Mayo Clinic, Rochester, MN, 55902, USA
| | - Olivia Molano
- College of Arts and Sciences, Washington State University Vancouver, Vancouver, WA, 98686, USA
- Neuroscience Graduate Program, Brown University, Providence, RI, 02912, USA
| | - Alexandra Pederson
- College of Arts and Sciences, Washington State University Vancouver, Vancouver, WA, 98686, USA
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Emma K Costa
- Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, 94305, USA
- Neurosciences Interdepartmental Program, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Jingxun Chen
- Department of Genetics, Stanford University, Stanford, CA, 94305, USA
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105
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Tojima T, Suda Y, Jin N, Kurokawa K, Nakano A. Spatiotemporal dissection of the Golgi apparatus and the ER-Golgi intermediate compartment in budding yeast. eLife 2024; 13:e92900. [PMID: 38501165 PMCID: PMC10950332 DOI: 10.7554/elife.92900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 02/23/2024] [Indexed: 03/20/2024] Open
Abstract
Cargo traffic through the Golgi apparatus is mediated by cisternal maturation, but it remains largely unclear how the cis-cisternae, the earliest Golgi sub-compartment, is generated and how the Golgi matures into the trans-Golgi network (TGN). Here, we use high-speed and high-resolution confocal microscopy to analyze the spatiotemporal dynamics of a diverse set of proteins that reside in and around the Golgi in budding yeast. We find many mobile punctate structures that harbor yeast counterparts of mammalian endoplasmic reticulum (ER)-Golgi intermediate compartment (ERGIC) proteins, which we term 'yeast ERGIC'. It occasionally exhibits approach and contact behavior toward the ER exit sites and gradually matures into the cis-Golgi. Upon treatment with the Golgi-disrupting agent brefeldin A, the ERGIC proteins form larger aggregates corresponding to the Golgi entry core compartment in plants, while cis- and medial-Golgi proteins are absorbed into the ER. We further analyze the dynamics of several late Golgi proteins to better understand the Golgi-TGN transition. Together with our previous studies, we demonstrate a detailed spatiotemporal profile of the entire cisternal maturation process from the ERGIC to the Golgi and further to the TGN.
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Grants
- KAKENHI 19K06669 Ministry of Education, Culture, Sports, Science and Technology
- KAKENHI 19H04764 Ministry of Education, Culture, Sports, Science and Technology
- KAKENHI 22K06213 Ministry of Education, Culture, Sports, Science and Technology
- CREST JPMJCR21E3 Japan Science and Technology Agency
- KAKENHI 17H06420 Ministry of Education, Culture, Sports, Science and Technology
- KAKENHI 18H05275 Ministry of Education, Culture, Sports, Science and Technology
- KAKENHI 23H00382 Ministry of Education, Culture, Sports, Science and Technology
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Affiliation(s)
- Takuro Tojima
- Live Cell Super-Resolution Imaging Research Team, RIKEN Center for Advanced PhotonicsWakoJapan
| | - Yasuyuki Suda
- Live Cell Super-Resolution Imaging Research Team, RIKEN Center for Advanced PhotonicsWakoJapan
- Laboratory of Molecular Cell Biology, Faculty of Medicine, University of TsukubaTsukubaJapan
| | - Natsuko Jin
- Live Cell Super-Resolution Imaging Research Team, RIKEN Center for Advanced PhotonicsWakoJapan
| | - Kazuo Kurokawa
- Live Cell Super-Resolution Imaging Research Team, RIKEN Center for Advanced PhotonicsWakoJapan
| | - Akihiko Nakano
- Live Cell Super-Resolution Imaging Research Team, RIKEN Center for Advanced PhotonicsWakoJapan
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106
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Nešić N, Heiligenstein X, Zopf L, Blüml V, Keuenhof KS, Wagner M, Höög JL, Qi H, Li Z, Tsaramirsis G, Peddie CJ, Stojmenović M, Walter A. Automated segmentation of cell organelles in volume electron microscopy using deep learning. Microsc Res Tech 2024. [PMID: 38501891 DOI: 10.1002/jemt.24548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/05/2024] [Accepted: 02/26/2024] [Indexed: 03/20/2024]
Abstract
Recent advances in computing power triggered the use of artificial intelligence in image analysis in life sciences. To train these algorithms, a large enough set of certified labeled data is required. The trained neural network is then capable of producing accurate instance segmentation results that will then need to be re-assembled into the original dataset: the entire process requires substantial expertise and time to achieve quantifiable results. To speed-up the process, from cell organelle detection to quantification across electron microscopy modalities, we propose a deep-learning based approach for fast automatic outline segmentation (FAMOUS), that involves organelle detection combined with image morphology, and 3D meshing to automatically segment, visualize and quantify cell organelles within volume electron microscopy datasets. From start to finish, FAMOUS provides full segmentation results within a week on previously unseen datasets. FAMOUS was showcased on a HeLa cell dataset acquired using a focused ion beam scanning electron microscope, and on yeast cells acquired by transmission electron tomography. RESEARCH HIGHLIGHTS: Introducing a rapid, multimodal machine-learning workflow for the automatic segmentation of 3D cell organelles. Successfully applied to a variety of volume electron microscopy datasets and cell lines. Outperforming manual segmentation methods in time and accuracy. Enabling high-throughput quantitative cell biology.
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Affiliation(s)
- Nebojša Nešić
- Department of Computer Science and Electrical Engineering, Singidunum University, Belgrade, Serbia
| | | | - Lydia Zopf
- Austrian BioImaging, Vienna BioCenter Core Facilities, Vienna, Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Trauma Research Center, Vienna, Austria
| | - Valentin Blüml
- Austrian BioImaging, Vienna BioCenter Core Facilities, Vienna, Austria
| | - Katharina S Keuenhof
- Department for Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Michael Wagner
- Centre for Optical Technologies, Aalen University, Aalen, Germany
| | - Johanna L Höög
- Department for Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Heng Qi
- Department of Computer Science, Dalian University of Technology, Dalian, China
| | - Zhiyang Li
- Department of Computer Science, Dalian Maritime University, Dalian, China
| | - Georgios Tsaramirsis
- Faculty of Computer Information, Higher Colleges of Technology, Abu Dhabi, United Arab Emirates
| | | | - Miloš Stojmenović
- Department of Computer Science and Electrical Engineering, Singidunum University, Belgrade, Serbia
| | - Andreas Walter
- Centre for Optical Technologies, Aalen University, Aalen, Germany
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107
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Yemets A, Shadrina R, Blume R, Plokhovska S, Blume Y. Autophagy formation, microtubule disorientation, and alteration of ATG8 and tubulin gene expression under simulated microgravity in Arabidopsis thaliana. NPJ Microgravity 2024; 10:31. [PMID: 38499552 PMCID: PMC10948825 DOI: 10.1038/s41526-024-00381-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 03/08/2024] [Indexed: 03/20/2024] Open
Abstract
Autophagy plays an important role in plant growth and development, pathogen invasion and modulates plant response and adaptation to various abiotic stress stimuli. The biogenesis and trafficking of autophagosomes involve microtubules (MTs) as important actors in the autophagic process. However, initiation of autophagy in plants under microgravity has not been previously studied. Here we demonstrate how simulated microgravity induces autophagy development involving microtubular reorganization during period of autophagosome formation. It was shown that induction of autophagy with maximal autophagosome formation in root cells of Arabidopsis thaliana is observed after 6 days of clinostating, along with MT disorganization, which leads to visible changes in root morphology. Gradual decrease of autophagosome number was indicated on 9th and 12th days of the experiment as well as no significant re-orientation of MTs were identified. Respectively, analysis of α- and β-tubulins and ATG8 gene expression was carried out. In particular, the most pronounced increase of expression on both 6th and 9th days in response to simulated microgravity was detected for non-paralogous AtATG8b, AtATG8f, AtATG8i, and AtTUA2, AtTUA3 genes, as well as for the pair of β-tubulin duplicates, namely AtTUB2 and AtTUB3. Overall, the main autophagic response was observed after 6 and 9 days of exposure to simulated microgravity, followed by adaptive response after 12 days. These findings provide a key basis for further studies of cellular mechanisms of autophagy and involvement of cytoskeletal structures in autophagy biogenesis under microgravity, which would enable development of new approaches, aimed on enhancing plant adaptation to microgravity.
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Affiliation(s)
- Alla Yemets
- Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Baidy-Vyshnevetskoho St., 2a, Kyiv, 04123, Ukraine.
| | - Ruslana Shadrina
- Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Baidy-Vyshnevetskoho St., 2a, Kyiv, 04123, Ukraine
| | - Rostyslav Blume
- Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Baidy-Vyshnevetskoho St., 2a, Kyiv, 04123, Ukraine.
| | - Svitlana Plokhovska
- Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Baidy-Vyshnevetskoho St., 2a, Kyiv, 04123, Ukraine
| | - Yaroslav Blume
- Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, Baidy-Vyshnevetskoho St., 2a, Kyiv, 04123, Ukraine.
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108
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Siddiqui MF, Li J, Wang S, Zhang H, Qin C, Lu Y. FAM20A is a golgi-localized Type II transmembrane protein. Sci Rep 2024; 14:6518. [PMID: 38499693 PMCID: PMC10948845 DOI: 10.1038/s41598-024-57007-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/13/2024] [Indexed: 03/20/2024] Open
Abstract
Family with sequence similarity 20, member A (FAM20A) is a pseudo-kinase in the secretory pathway and is essential for enamel formation in humans. Here we examine if FAM20A is a membrane-associated protein. We show that the full-length FAM20A can be purified from HEK293 cells transfected with a FAM20A-expresing construct. Further, it is only found in the membrane fraction, but not in the soluble fraction, of cell lysate. Consistently, it is not secreted out of the expressing cells. Moreover, it is co-localized with GM130, a cis-Golgi network marker, and membrane topology analysis indicates that it has its C-terminus oriented towards the lumen of the organelle. Our results support that FAM20A is a Type II transmembrane protein within the secretory compartments.
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Affiliation(s)
- Mohammad Faizan Siddiqui
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Jiahe Li
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Suzhen Wang
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Hua Zhang
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Chunlin Qin
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Yongbo Lu
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA.
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109
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Watanabe S, Kise Y, Yonezawa K, Inoue M, Shimizu N, Nureki O, Inaba K. Structure of full-length ERGIC-53 in complex with MCFD2 for cargo transport. Nat Commun 2024; 15:2404. [PMID: 38493152 PMCID: PMC10944485 DOI: 10.1038/s41467-024-46747-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 03/07/2024] [Indexed: 03/18/2024] Open
Abstract
ERGIC-53 transports certain subsets of newly synthesized secretory proteins and membrane proteins from the endoplasmic reticulum to the Golgi apparatus. Despite numerous structural and functional studies since its identification, the overall architecture and mechanism of action of ERGIC-53 remain unclear. Here we present cryo-EM structures of full-length ERGIC-53 in complex with its functional partner MCFD2. These structures reveal that ERGIC-53 exists as a homotetramer, not a homohexamer as previously suggested, and comprises a four-leaf clover-like head and a long stalk composed of three sets of four-helix coiled-coil followed by a transmembrane domain. 3D variability analysis visualizes the flexible motion of the long stalk and local plasticity of the head region. Notably, MCFD2 is shown to possess a Zn2+-binding site in its N-terminal lid, which appears to modulate cargo binding. Altogether, distinct mechanisms of cargo capture and release by ERGIC- 53 via the stalk bending and metal binding are proposed.
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Affiliation(s)
- Satoshi Watanabe
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi, 980-8577, Japan.
- Department of Molecular and Chemical Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, 980-8577, Japan.
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Miyagi, 980-8578, Japan.
| | - Yoshiaki Kise
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kento Yonezawa
- Structural Biology Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, 305-0801, Japan
- Center for Digital Green-innovation, Nara Institute of Science and Technology, Ikoma, Nara, 630-0192, Japan
| | - Mariko Inoue
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi, 980-8577, Japan
| | - Nobutaka Shimizu
- Structural Biology Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, 305-0801, Japan
| | - Osamu Nureki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kenji Inaba
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi, 980-8577, Japan.
- Department of Molecular and Chemical Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, 980-8577, Japan.
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Miyagi, 980-8578, Japan.
- Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan.
- Core Research for Evolutional Science and Technology (CREST), Japan Agency for Medical Research and Development (AMED), Tokyo, Japan.
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110
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Valenzisi P, Marabitti V, Pichierri P, Franchitto A. WRNIP1 prevents transcription-associated genomic instability. eLife 2024; 12:RP89981. [PMID: 38488661 PMCID: PMC10942783 DOI: 10.7554/elife.89981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024] Open
Abstract
R-loops are non-canonical DNA structures that form during transcription and play diverse roles in various physiological processes. Disruption of R-loop homeostasis can lead to genomic instability and replication impairment, contributing to several human diseases, including cancer. Although the molecular mechanisms that protect cells against such events are not fully understood, recent research has identified fork protection factors and DNA damage response proteins as regulators of R-loop dynamics. In this study, we identify the Werner helicase-interacting protein 1 (WRNIP1) as a novel factor that counteracts transcription-associated DNA damage upon replication perturbation. Loss of WRNIP1 leads to R-loop accumulation, resulting in collisions between the replisome and transcription machinery. We observe co-localization of WRNIP1 with transcription/replication complexes and R-loops after replication perturbation, suggesting its involvement in resolving transcription-replication conflicts. Moreover, WRNIP1-deficient cells show impaired replication restart from transcription-induced fork stalling. Notably, transcription inhibition and RNase H1 overexpression rescue all the defects caused by loss of WRNIP1. Importantly, our findings highlight the critical role of WRNIP1 ubiquitin-binding zinc finger (UBZ) domain in preventing pathological persistence of R-loops and limiting DNA damage, thereby safeguarding genome integrity.
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Affiliation(s)
- Pasquale Valenzisi
- Section of Mechanisms Biomarkers and Models, Department of Environment and Health, Istituto Superiore di SanitaRomeItaly
| | - Veronica Marabitti
- Section of Mechanisms Biomarkers and Models, Department of Environment and Health, Istituto Superiore di SanitaRomeItaly
| | - Pietro Pichierri
- Section of Mechanisms Biomarkers and Models, Department of Environment and Health, Istituto Superiore di SanitaRomeItaly
| | - Annapaola Franchitto
- Section of Mechanisms Biomarkers and Models, Department of Environment and Health, Istituto Superiore di SanitaRomeItaly
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García-Carrillo R, Molina-Pelayo FA, Zarate-Lopez D, Cabrera-Aguilar A, Ortega-Domínguez B, Domínguez-López M, Chiquete-Félix N, Dagnino-Acosta A, Velasco-Loyden G, Chávez E, Castro-Sánchez L, de Sánchez VC. An adenosine derivative promotes mitochondrial supercomplexes reorganization and restoration of mitochondria structure and bioenergetics in a diethylnitrosamine-induced hepatocellular carcinoma model. Sci Rep 2024; 14:6348. [PMID: 38491051 PMCID: PMC10943223 DOI: 10.1038/s41598-024-56306-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 03/05/2024] [Indexed: 03/18/2024] Open
Abstract
Hepatocellular carcinoma (HCC) progression is associated with dysfunctional mitochondria and bioenergetics impairment. However, no data about the relationship between mitochondrial supercomplexes (hmwSC) formation and ATP production rates in HCC are available. Our group has developed an adenosine derivative, IFC-305, which improves mitochondrial function, and it has been proposed as a therapeutic candidate for HCC. We aimed to determine the role of IFC-305 on both mitochondrial structure and bioenergetics in a sequential cirrhosis-HCC model in rats. Our results showed that IFC-305 administration decreased the number and size of liver tumors, reduced the expression of tumoral markers, and reestablished the typical architecture of the hepatic parenchyma. The livers of treated rats showed a reduction of mitochondria number, recovery of the mtDNA/nDNA ratio, and mitochondrial length. Also, IFC-305 increased cardiolipin and phosphatidylcholine levels and promoted hmwSC reorganization with changes in the expression levels of hmwSC assembly-related genes. IFC-305 in HCC modified the expression of several genes encoding elements of electron transport chain complexes and increased the ATP levels by recovering the complex I, III, and V activity. We propose that IFC-305 restores the mitochondrial bioenergetics in HCC by normalizing the quantity, morphology, and function of mitochondria, possibly as part of its hepatic restorative effect.
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Grants
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- FOP02-2022-02 project 321696 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- Ciencia de Frontera-2019 project 501204 Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT)
- PAPIIT-UNAM project IN214419 Universidad Nacional Autónoma de México
- PAPIIT-UNAM project IN214419 Universidad Nacional Autónoma de México
- PAPIIT-UNAM project IN214419 Universidad Nacional Autónoma de México
- PAPIIT-UNAM project IN214419 Universidad Nacional Autónoma de México
- PAPIIT-UNAM project IN214419 Universidad Nacional Autónoma de México
- PAPIIT-UNAM project IN214419 Universidad Nacional Autónoma de México
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Affiliation(s)
- Rosendo García-Carrillo
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, 28045, Colima, México
| | | | - David Zarate-Lopez
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, 28045, Colima, México
| | - Alejandro Cabrera-Aguilar
- Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Bibiana Ortega-Domínguez
- Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Mariana Domínguez-López
- Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Natalia Chiquete-Félix
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Adan Dagnino-Acosta
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, 28045, Colima, México
- CONAHCYT-Universidad de Colima, 28045, Colima, México
| | - Gabriela Velasco-Loyden
- Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Enrique Chávez
- Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Luis Castro-Sánchez
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, 28045, Colima, México.
- CONAHCYT-Universidad de Colima, 28045, Colima, México.
| | - Victoria Chagoya de Sánchez
- Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México.
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112
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Zhang J, Peng Y, Fu W, Wang R, Cao J, Li S, Tian X, Li Z, Hua C, Zhai Y, Liu Y, Liu M, Sun J, Li X, Zhao X, Dong J. PLEKHM2 deficiency induces impaired mitochondrial clearance and elevated ROS levels in human iPSC-derived cardiomyocytes. Cell Death Discov 2024; 10:142. [PMID: 38490981 PMCID: PMC10942999 DOI: 10.1038/s41420-024-01907-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 02/28/2024] [Accepted: 03/05/2024] [Indexed: 03/18/2024] Open
Abstract
Pleckstrin homology domain-containing family M member 2 (PLEKHM2) is an essential adaptor for lysosomal trafficking and its homozygous truncation have been reported to cause early onset dilated cardiomyopathy (DCM). However, the molecular mechanism of PLEKHM2 deficiency in DCM pathogenesis and progression is poorly understood. Here, we generated an in vitro model of PLEKHM2 knockout (KO) induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) to elucidate the potential pathogenic mechanism of PLEKHM2-deficient cardiomyopathy. PLEKHM2-KO hiPSC-CMs developed disease phenotypes with reduced contractility and impaired calcium handling. Subsequent RNA sequencing (RNA-seq) analysis revealed altered expression of genes involved in mitochondrial function, autophagy and apoptosis in PLEKHM2-KO hiPSC-CMs. Further molecular experiments confirmed PLEKHM2 deficiency impaired autophagy and resulted in accumulation of damaged mitochondria, which triggered increased reactive oxygen species (ROS) levels and decreased mitochondrial membrane potential (Δψm). Importantly, the elevated ROS levels caused oxidative stress-induced damage to nearby healthy mitochondria, resulting in extensive Δψm destabilization, and ultimately leading to impaired mitochondrial function and myocardial contractility. Moreover, ROS inhibition attenuated oxidative stress-induced mitochondrial damage, thereby partially rescued PLEKHM2 deficiency-induced disease phenotypes. Remarkably, PLEKHM2-WT overexpression restored autophagic flux and rescued mitochondrial function and myocardial contractility in PLEKHM2-KO hiPSC-CMs. Taken together, these results suggested that impaired mitochondrial clearance and increased ROS levels play important roles in PLEKHM2-deficient cardiomyopathy, and PLEKHM2-WT overexpression can improve mitochondrial function and rescue PLEKHM2-deficient cardiomyopathy.
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Affiliation(s)
- Jianchao Zhang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Ying Peng
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Wanrong Fu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Ruifei Wang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
- Department of Cardiology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Jinhua Cao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Shuang Li
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Xiaoxu Tian
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Zhonggen Li
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Chongpei Hua
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Yafei Zhai
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Yangyang Liu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Mengduan Liu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Jihong Sun
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China
| | - Xiaowei Li
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China.
| | - Xiaoyan Zhao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China.
| | - Jianzeng Dong
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
- Henan Key Laboratory of Hereditary Cardiovascular Diseases, Zhengzhou, 450052, China.
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, National Clinical Research Centre for Cardiovascular Diseases, No. 2 Beijing Anzhen Road, Chaoyang District, Beijing, 100029, China.
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113
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Yuan Y, Fan Y, Tang W, Sun H, Sun J, Su H, Fan H. Identification of ALYREF in pan cancer as a novel cancer prognostic biomarker and potential regulatory mechanism in gastric cancer. Sci Rep 2024; 14:6270. [PMID: 38491127 PMCID: PMC10942997 DOI: 10.1038/s41598-024-56895-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 03/12/2024] [Indexed: 03/18/2024] Open
Abstract
ALYREF is considered as a specific mRNA m5C-binding protein which recognizes m5C sites in RNA and facilitates the export of RNA from the nucleus to the cytoplasm. Expressed in various tissues and highly involved in the transcriptional regulation, ALYREF has the potential to become a novel diagnostic marker and therapeutic target for cancer patients. However, few studies focused on its function during carcinogenesis and progress. In order to explore the role of ALYREF on tumorigenesis, TCGA and GTEx databases were used to investigate the relationship of ALYREF to pan-cancer. We found that ALYREF was highly expressed in majority of cancer types and that elevated expression level was positively associated with poor prognosis in many cancers. GO and KEGG analysis showed that ALYREF to be essential in regulating the cell cycle and gene mismatch repair in tumor progression. The correlation analysis of tumor heterogeneity indicated that ALYREF could be specially correlated to the tumor stemness in stomach adenocarcinoma (STAD). Furthermore, we investigate the potential function of ALYREF on gastric carcinogenesis. Prognostic analysis of different molecular subtypes of gastric cancer (GC) unfolded that high ALYREF expression leads to poor prognosis in certain subtypes of GC. Finally, enrichment analysis revealed that ALYREF-related genes possess the function of regulating cell cycle and apoptosis that cause further influences in GC tumor progression. For further verification, we knocked down the expression of ALYREF by siRNA in GC cell line AGS. Knockdown of ALYREF distinctly contributed to inhibition of GC cell proliferation. Moreover, it is observed that knocked-down of ALYREF induced AGS cells arrested in G1 phase and increased cell apoptosis. Our findings highlighted the essential function of ALYREF in tumorigenesis and revealed the specific contribution of ALYREF to gastric carcinogenesis through pan-cancer analysis and biological experiments.
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Affiliation(s)
- Yujie Yuan
- The Key Laboratory of Developmental Genes and Human Diseases, Department of Medical Genetics and Developmental Biology, School of Medicine, Ministry of Education, Southeast University, Nanjing, 210009, China
| | - Yiyang Fan
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Wenqing Tang
- School of Life Science and Technology, Southeast University, Nanjing, 210096, China
| | - Hui Sun
- School of Life Science and Technology, Southeast University, Nanjing, 210096, China
| | - Jinghan Sun
- School of Life Science and Technology, Southeast University, Nanjing, 210096, China
| | - Hongmeng Su
- The Key Laboratory of Developmental Genes and Human Diseases, Department of Medical Genetics and Developmental Biology, School of Medicine, Ministry of Education, Southeast University, Nanjing, 210009, China
| | - Hong Fan
- The Key Laboratory of Developmental Genes and Human Diseases, Department of Medical Genetics and Developmental Biology, School of Medicine, Ministry of Education, Southeast University, Nanjing, 210009, China.
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114
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Mohr ME, Li S, Trouten AM, Stairley RA, Roddy PL, Liu C, Zhang M, Sucov HM, Tao G. Cardiomyocyte-fibroblast interaction regulates ferroptosis and fibrosis after myocardial injury. iScience 2024; 27:109219. [PMID: 38469561 PMCID: PMC10926204 DOI: 10.1016/j.isci.2024.109219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/11/2023] [Accepted: 02/07/2024] [Indexed: 03/13/2024] Open
Abstract
Neonatal mouse hearts have transient renewal capacity, which is lost in juvenile and adult stages. In neonatal mouse hearts, myocardial infarction (MI) causes an initial loss of cardiomyocytes. However, it is unclear which type of regulated cell death (RCD) occurs in stressed cardiomyocytes. In the current studies, we induced MI in neonatal and juvenile mouse hearts and showed that ischemic cardiomyocytes primarily undergo ferroptosis, a non-apoptotic and iron-dependent form of RCD. We demonstrated that cardiac fibroblasts (CFs) protect cardiomyocytes from ferroptosis through paracrine effects and direct cell-cell interaction. CFs show strong resistance to ferroptosis due to high ferritin expression. The fibrogenic activity of CFs, typically considered detrimental to heart function, is negatively regulated by paired-like homeodomain 2 (Pitx2) signaling from cardiomyocytes. In addition, Pitx2 prevents ferroptosis in cardiomyocytes by regulating ferroptotic genes. Understanding the regulatory mechanisms of cardiomyocyte survival and death can identify potentially translatable therapeutic strategies for MI.
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Affiliation(s)
- Mary E. Mohr
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Shuang Li
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Allison M. Trouten
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Rebecca A. Stairley
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Patrick L. Roddy
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Chun Liu
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
- Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Min Zhang
- Pediatric Translational Medicine Institute, Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Henry M. Sucov
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
- Department of Medicine, Division of Cardiology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Ge Tao
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
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115
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Doser RL, Knight KM, Deihl EW, Hoerndli FJ. Activity-dependent mitochondrial ROS signaling regulates recruitment of glutamate receptors to synapses. eLife 2024; 13:e92376. [PMID: 38483244 PMCID: PMC10990490 DOI: 10.7554/elife.92376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 03/13/2024] [Indexed: 04/04/2024] Open
Abstract
Our understanding of mitochondrial signaling in the nervous system has been limited by the technical challenge of analyzing mitochondrial function in vivo. In the transparent genetic model Caenorhabditis elegans, we were able to manipulate and measure mitochondrial reactive oxygen species (mitoROS) signaling of individual mitochondria as well as neuronal activity of single neurons in vivo. Using this approach, we provide evidence supporting a novel role for mitoROS signaling in dendrites of excitatory glutamatergic C. elegans interneurons. Specifically, we show that following neuronal activity, dendritic mitochondria take up calcium (Ca2+) via the mitochondrial Ca2+ uniporter (MCU-1) that results in an upregulation of mitoROS production. We also observed that mitochondria are positioned in close proximity to synaptic clusters of GLR-1, the C. elegans ortholog of the AMPA subtype of glutamate receptors that mediate neuronal excitation. We show that synaptic recruitment of GLR-1 is upregulated when MCU-1 function is pharmacologically or genetically impaired but is downregulated by mitoROS signaling. Thus, signaling from postsynaptic mitochondria may regulate excitatory synapse function to maintain neuronal homeostasis by preventing excitotoxicity and energy depletion.
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Affiliation(s)
- Rachel L Doser
- Department of Biomedical Science, Colorado State UniversityFort CollinsUnited States
- Department of Health and Exercise Sciences, Colorado State UniversityFort CollinsUnited States
| | - Kaz M Knight
- Department of Biomedical Science, Colorado State UniversityFort CollinsUnited States
- Cellular and Molecular Biology Graduate Program, Colorado State UniversityFort CollinsUnited States
| | - Ennis W Deihl
- Department of Biomedical Science, Colorado State UniversityFort CollinsUnited States
| | - Frederic J Hoerndli
- Department of Biomedical Science, Colorado State UniversityFort CollinsUnited States
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116
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Dong X, Zhan Y, Li S, Yang M, Gao Y. MKRN1 regulates the expression profiles and transcription factor activity in HeLa cells inhibition suppresses cervical cancer cell progression. Sci Rep 2024; 14:6129. [PMID: 38480859 PMCID: PMC10937657 DOI: 10.1038/s41598-024-56830-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 03/12/2024] [Indexed: 03/17/2024] Open
Abstract
Cervical cancer is one of the most common gynecologic malignancies worldwide, necessitating the identification of novel biomarkers and therapeutic targets. This study aimed to investigate the significance of MKRN1 in cervical cancer and explore its potential as a diagnostic marker and therapeutic target. The results indicated that MKRN1 expression was up-regulated in cervical cancer tissues and correlated with advanced tumor stage, higher grade, and poor patient survival. Functional studies demonstrated that targeting MKRN1 effectively inhibited cell proliferation, migration, and invasion, highlighting its critical role in tumor progression and metastasis. Moreover, the knockdown of MKRN1 resulted in altered expression patterns of six transcription factor-encoding genes, revealing its involvement in gene regulation. Co-expression network analysis unveiled complex regulatory mechanisms underlying the effects of MKRN1 knockdown on gene expression. Furthermore, the results suggested that MKRN1 might serve as a diagnostic marker for personalized treatment strategies and a therapeutic target to inhibit tumor growth, metastasis, and overcome drug resistance. The development of MKRN1-targeted interventions might hold promise for advancing personalized medicine approaches in cervical cancer treatment. Further research is warranted to validate these findings, elucidate underlying mechanisms, and translate these insights into improved management and outcomes for cervical cancer patients.
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Affiliation(s)
- Xiang Dong
- School of Life Science, Bengbu Medical College, No. 2600 Donghai Road, Bengbu, 233030, Anhui, China
- Research Center of Clinical Laboratory Science, School of Laboratory Medicine, Bengbu Medical College, Bengbu, 233030, Anhui, China
| | - Yuling Zhan
- School of Life Science, Bengbu Medical College, No. 2600 Donghai Road, Bengbu, 233030, Anhui, China
- Research Center of Clinical Laboratory Science, School of Laboratory Medicine, Bengbu Medical College, Bengbu, 233030, Anhui, China
| | - Suwan Li
- School of Life Science, Bengbu Medical College, No. 2600 Donghai Road, Bengbu, 233030, Anhui, China
- Research Center of Clinical Laboratory Science, School of Laboratory Medicine, Bengbu Medical College, Bengbu, 233030, Anhui, China
| | - Minghui Yang
- Research Center of Clinical Laboratory Science, School of Laboratory Medicine, Bengbu Medical College, Bengbu, 233030, Anhui, China
- School of Basic Courses, Bengbu Medical College, Bengbu, 233030, Anhui, China
| | - Yu Gao
- School of Life Science, Bengbu Medical College, No. 2600 Donghai Road, Bengbu, 233030, Anhui, China.
- Laboratory Animal Center, Bengbu Medical College, Bengbu, 233030, Anhui, China.
- Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, 233030, Anhui, China.
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117
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Zhang H, Li Y, Ibáñez CF, Xie M. Perirenal adipose tissue contains a subpopulation of cold-inducible adipocytes derived from brown-to-white conversion. eLife 2024; 13:RP93151. [PMID: 38470102 DOI: 10.7554/elife.93151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Abstract
Perirenal adipose tissue (PRAT) is a unique visceral depot that contains a mixture of brown and white adipocytes. The origin and plasticity of such cellular heterogeneity remains unknown. Here, we combine single-nucleus RNA sequencing with genetic lineage tracing to reveal the existence of a distinct subpopulation of Ucp1-&Cidea+ adipocytes that arises from brown-to-white conversion during postnatal life in the periureter region of mouse PRAT. Cold exposure restores Ucp1 expression and a thermogenic phenotype in this subpopulation. These cells have a transcriptome that is distinct from subcutaneous beige adipocytes and may represent a unique type of cold-recruitable adipocytes. These results pave the way for studies of PRAT physiology and mechanisms controlling the plasticity of brown/white adipocyte phenotypes.
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Affiliation(s)
- Houyu Zhang
- Chinese Institute for Brain Research, Zhongguancun Life Science Park, Beijing, China
- Peking University Academy for Advanced Interdisciplinary Studies, Beijing, China
| | - Yan Li
- Chinese Institute for Brain Research, Zhongguancun Life Science Park, Beijing, China
- Peking University Academy for Advanced Interdisciplinary Studies, Beijing, China
| | - Carlos F Ibáñez
- Chinese Institute for Brain Research, Zhongguancun Life Science Park, Beijing, China
- Peking University School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Beijing, China
- PKU-IDG/McGovern Institute for Brain Research, Beijing, China
- Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Meng Xie
- PKU-IDG/McGovern Institute for Brain Research, Beijing, China
- Peking University School of Psychological and Cognitive Sciences, Beijing Key Laboratory of Behavior and Mental Health, Beijing, China
- Department of Biosciences and Nutrition, Karolinska Institute, Flemingsberg, Sweden
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118
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Amini A, Esmaeili F, Golpich M. Possible role of lncRNAs in amelioration of Parkinson's disease symptoms by transplantation of dopaminergic cells. NPJ Parkinsons Dis 2024; 10:56. [PMID: 38472261 PMCID: PMC10933336 DOI: 10.1038/s41531-024-00661-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 02/14/2024] [Indexed: 03/14/2024] Open
Abstract
Long non-coding RNAs (lncRNAs) are biomarkers for diagnosis and treatment of Parkinson's disease (PD). Since dopaminergic cell transplantation is a clinical method to treat PD, this study investigated the effects of dopaminergic cell therapy on the expression of some lncRNAs and genes related to PD. In this study, Twenty-eight rats were randomly assigned to four experimental groups. The control group (Sal group) received saline injections. The Par group was a PD rat model with 6-hydroxydopamine (6-OHDA) injection in right striatum (ST). PD animals were transplanted by undifferentiated P19 stem cells (Par-E group), and P19-derived dopaminergic cells (Par-N group). Cell transplant effects were evaluated using behavioral tests (cylinder, open field, and rotarod tests), and histological methods (H&E and Nissl staining, and immunohistochemistry). Moreover, the expression of lncRNAs MALAT1, MEG3, and SNHG1, alongside specific neuronal (synaptophysin) and dopaminergic (tyrosine hydroxylase) markers was evaluated by qRT-PCR. Behavioral and histopathological examinations revealed that cell transplantation partially compensated dopaminergic cell degeneration in ST and substantia nigra (SN) of PD rats. The expression of MALAT1, SNHG1, and MEG3 was decreased in the ST of the Par group, while MEG3 and SNHG1 gene expression was increased in PBMC relative to the Sal group. In PBMC of the Par-N group, all three lncRNAs showed a reduction in their expression. Conversely, MALAT1 and SNHG1 expression was increased in ST tissue, while MEG3 gene expression was decreased compared to the Sal group. In conclusion, dopaminergic cell transplantation could change the lncRNAs expression. Furthermore, it partially improves symptoms in PD rats.
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Affiliation(s)
- A Amini
- Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - F Esmaeili
- Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.
| | - M Golpich
- Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
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Jorgenson KW, Hibbert JE, Sayed RKA, Lange AN, Godwin JS, Mesquita PHC, Ruple BA, McIntosh MC, Kavazis AN, Roberts MD, Hornberger TA. A novel imaging method (FIM-ID) reveals that myofibrillogenesis plays a major role in the mechanically induced growth of skeletal muscle. eLife 2024; 12:RP92674. [PMID: 38466320 PMCID: PMC10928493 DOI: 10.7554/elife.92674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024] Open
Abstract
An increase in mechanical loading, such as that which occurs during resistance exercise, induces radial growth of muscle fibers (i.e. an increase in cross-sectional area). Muscle fibers are largely composed of myofibrils, but whether radial growth is mediated by an increase in the size of the myofibrils (i.e. myofibril hypertrophy) and/or the number of myofibrils (i.e. myofibrillogenesis) is not known. Electron microscopy (EM) can provide images with the level of resolution that is needed to address this question, but the acquisition and subsequent analysis of EM images is a time- and cost-intensive process. To overcome this, we developed a novel method for visualizing myofibrils with a standard fluorescence microscope (fluorescence imaging of myofibrils with image deconvolution [FIM-ID]). Images from FIM-ID have a high degree of resolution and contrast, and these properties enabled us to develop pipelines for automated measurements of myofibril size and number. After extensively validating the automated measurements, we used both mouse and human models of increased mechanical loading to discover that the radial growth of muscle fibers is largely mediated by myofibrillogenesis. Collectively, the outcomes of this study offer insight into a fundamentally important topic in the field of muscle growth and provide future investigators with a time- and cost-effective means to study it.
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Affiliation(s)
- Kent W Jorgenson
- School of Veterinary Medicine and the Department of Comparative Biosciences, University of Wisconsin-MadisonMadisonUnited States
| | - Jamie E Hibbert
- School of Veterinary Medicine and the Department of Comparative Biosciences, University of Wisconsin-MadisonMadisonUnited States
| | - Ramy KA Sayed
- School of Veterinary Medicine and the Department of Comparative Biosciences, University of Wisconsin-MadisonMadisonUnited States
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Sohag UniversitySohagEgypt
| | - Anthony N Lange
- School of Veterinary Medicine and the Department of Comparative Biosciences, University of Wisconsin-MadisonMadisonUnited States
| | | | | | | | | | | | | | - Troy A Hornberger
- School of Veterinary Medicine and the Department of Comparative Biosciences, University of Wisconsin-MadisonMadisonUnited States
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120
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Kowald L, Roedig J, Karlowitz R, Wagner K, Smith S, Juretschke T, Beli P, Müller S, van Wijk SJL. USP22 regulates APL differentiation via PML-RARα stabilization and IFN repression. Cell Death Discov 2024; 10:128. [PMID: 38467608 PMCID: PMC10928094 DOI: 10.1038/s41420-024-01894-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 03/13/2024] Open
Abstract
Ubiquitin-specific peptidase 22 (USP22) is a deubiquitinating enzyme (DUB) that underlies tumorigenicity, proliferation, cell death and differentiation through deubiquitination of histone and non-histone targets. Ubiquitination determines stability, localization and functions of cell fate proteins and controls cell-protective signaling pathways to surveil cell cycle progression. In a variety of carcinomas, lymphomas and leukemias, ubiquitination regulates the tumor-suppressive functions of the promyelocytic leukemia protein (PML), but PML-specific DUBs, DUB-controlled PML ubiquitin sites and the functional consequences of PML (de)ubiquitination remain unclear. Here, we identify USP22 as regulator of PML and the oncogenic acute promyelocytic leukemia (APL) fusion PML-RARα protein stability and identify a destabilizing role of PML residue K394. Additionally, loss of USP22 upregulates interferon (IFN) and IFN-stimulated gene (ISG) expression in APL and induces PML-RARα stabilization and a potentiation of the cell-autonomous sensitivity towards all-trans retinoic acid (ATRA)-mediated differentiation. Our findings imply USP22-dependent surveillance of PML-RARα stability and IFN signaling as important regulator of APL pathogenesis, with implications for viral mimicry, differentiation and cell fate regulation in other leukemia subtypes.
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Affiliation(s)
- Lisa Kowald
- Institute for Experimental Pediatric Hematology and Oncology, Medical Faculty, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt am Main, Germany
| | - Jens Roedig
- Institute for Experimental Pediatric Hematology and Oncology, Medical Faculty, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt am Main, Germany
| | - Rebekka Karlowitz
- Institute for Experimental Pediatric Hematology and Oncology, Medical Faculty, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt am Main, Germany
| | - Kristina Wagner
- Institute of Biochemistry II (IBCII), Medical Faculty, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - Sonja Smith
- Institute for Experimental Pediatric Hematology and Oncology, Medical Faculty, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt am Main, Germany
| | - Thomas Juretschke
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | - Petra Beli
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
| | - Stefan Müller
- Institute of Biochemistry II (IBCII), Medical Faculty, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - Sjoerd J L van Wijk
- Institute for Experimental Pediatric Hematology and Oncology, Medical Faculty, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt am Main, Germany.
- German Cancer Consortium (DKTK), partner site Frankfurt/Mainz, Frankfurt am Main, Germany.
- German Cancer Research Center (DKFZ), Heidelberg, Germany.
- University Cancer Centre Frankfurt (UCT), University Hospital Frankfurt, Goethe-University Frankfurt, Frankfurt, Germany.
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121
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Gilbert CJ, Rabolli CP, Golubeva VA, Sattler KM, Wang M, Ketabforoush A, Arnold WD, Lepper C, Accornero F. YTHDF2 governs muscle size through a targeted modulation of proteostasis. Nat Commun 2024; 15:2176. [PMID: 38467649 PMCID: PMC10928198 DOI: 10.1038/s41467-024-46546-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 02/28/2024] [Indexed: 03/13/2024] Open
Abstract
The regulation of proteostasis is fundamental for maintenance of muscle mass and function. Activation of the TGF-β pathway drives wasting and premature aging by favoring the proteasomal degradation of structural muscle proteins. Yet, how this critical post-translational mechanism is kept in check to preserve muscle health remains unclear. Here, we reveal the molecular link between the post-transcriptional regulation of m6A-modified mRNA and the modulation of SMAD-dependent TGF-β signaling. We show that the m6A-binding protein YTHDF2 is essential to determining postnatal muscle size. Indeed, muscle-specific genetic deletion of YTHDF2 impairs skeletal muscle growth and abrogates the response to hypertrophic stimuli. We report that YTHDF2 controls the mRNA stability of the ubiquitin ligase ASB2 with consequences on anti-growth gene program activation through SMAD3. Our study identifies a post-transcriptional to post-translational mechanism for the coordination of gene expression in muscle.
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Affiliation(s)
- Christopher J Gilbert
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI, USA
| | - Charles P Rabolli
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI, USA
| | - Volha A Golubeva
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Kristina M Sattler
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Meifang Wang
- NextGen Precision Health, University of Missouri, Columbia, MO, USA
- Department of Physical Medicine and Rehabilitation, University of Missouri, Columbia, MO, USA
| | - Arsh Ketabforoush
- NextGen Precision Health, University of Missouri, Columbia, MO, USA
- Department of Physical Medicine and Rehabilitation, University of Missouri, Columbia, MO, USA
| | - W David Arnold
- NextGen Precision Health, University of Missouri, Columbia, MO, USA
- Department of Physical Medicine and Rehabilitation, University of Missouri, Columbia, MO, USA
- Department of Neurology, University of Missouri, Columbia, MO, USA
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, USA
- Division of Neuromuscular Disorders, Department of Neurology, The Ohio State University, Columbus, OH, USA
- Department of Physical Medicine and Rehabilitation, The Ohio State University, Columbus, OH, USA
| | - Christoph Lepper
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Federica Accornero
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA.
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI, USA.
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122
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Lujan P, Garcia-Cabau C, Wakana Y, Vera Lillo J, Rodilla-Ramírez C, Sugiura H, Malhotra V, Salvatella X, Garcia-Parajo MF, Campelo F. Sorting of secretory proteins at the trans-Golgi network by human TGN46. eLife 2024; 12:RP91708. [PMID: 38466628 DOI: 10.7554/elife.91708] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Abstract
Secretory proteins are sorted at the trans-Golgi network (TGN) for export into specific transport carriers. However, the molecular players involved in this fundamental process remain largely elusive. Here, we identified the human transmembrane protein TGN46 as a receptor for the export of secretory cargo protein PAUF in CARTS - a class of protein kinase D-dependent TGN-to-plasma membrane carriers. We show that TGN46 is necessary for cargo sorting and loading into nascent carriers at the TGN. By combining quantitative fluorescence microscopy and mutagenesis approaches, we further discovered that the lumenal domain of TGN46 encodes for its cargo sorting function. In summary, our results define a cellular function of TGN46 in sorting secretory proteins for export from the TGN.
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Affiliation(s)
- Pablo Lujan
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Carla Garcia-Cabau
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Yuichi Wakana
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Javier Vera Lillo
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Carmen Rodilla-Ramírez
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Hideaki Sugiura
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Vivek Malhotra
- Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, Barcelona, Spain
- Universitat Pompeu Fabra, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Xavier Salvatella
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Maria F Garcia-Parajo
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Felix Campelo
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Barcelona, Spain
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123
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Krasovec G, Renaud C, Quéinnec É, Sasakura Y, Chambon JP. Extrinsic apoptosis participates to tail regression during the metamorphosis of the chordate Ciona. Sci Rep 2024; 14:5729. [PMID: 38459045 PMCID: PMC10923776 DOI: 10.1038/s41598-023-48411-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 11/26/2023] [Indexed: 03/10/2024] Open
Abstract
Apoptosis is a regulated cell death ubiquitous in animals defined by morphological features depending on caspases. Two regulation pathways are described, currently named the intrinsic and the extrinsic apoptosis. While intrinsic apoptosis is well studied and considered ancestral among metazoans, extrinsic apoptosis is poorly studied outside mammals. Here, we address extrinsic apoptosis in the urochordates Ciona, belonging to the sister group of vertebrates. During metamorphosis, Ciona larvae undergo a tail regression depending on tissue contraction, migration and apoptosis. Apoptosis begin at the tail tip and propagates towards the trunk as a polarized wave. We identified Ci-caspase 8/10 by phylogenetic analysis as homolog to vertebrate caspases 8 and 10 that are the specific initiator of extrinsic apoptosis. We detected Ci-caspase 8/10 expression in Ciona larvae, especially at the tail tip. We showed that chemical inhibition of Ci-caspase 8/10 leads to a delay of tail regression, and Ci-caspase 8/10 loss of function induced an incomplete tail regression. The specificity between apoptotic pathways and initiator caspase suggests that extrinsic apoptosis regulates cell death during the tail regression. Our study presents rare in vivo work on extrinsic apoptosis outside mammals, and contribute to the discussion on its evolutionary history in animals.
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Affiliation(s)
- Gabriel Krasovec
- Institut de Systématique, Evolution, Biodiversité, Sorbonne Université, Muséum National d'Histoire Naturelle, CNRS, EPHE, F-75252, Paris Cedex 05, France.
- Shimoda Marine Research Center, University of Tsukuba, Shizuoka, Japan.
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013, Paris, France.
| | - Cécile Renaud
- Institut de Systématique, Evolution, Biodiversité, Sorbonne Université, Muséum National d'Histoire Naturelle, CNRS, EPHE, F-75252, Paris Cedex 05, France
| | - Éric Quéinnec
- Institut de Systématique, Evolution, Biodiversité, Sorbonne Université, Muséum National d'Histoire Naturelle, CNRS, EPHE, F-75252, Paris Cedex 05, France
| | - Yasunori Sasakura
- Shimoda Marine Research Center, University of Tsukuba, Shizuoka, Japan
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Zhou Q, Meng Y, Li D, Yao L, Le J, Liu Y, Sun Y, Zeng F, Chen X, Deng G. Ferroptosis in cancer: From molecular mechanisms to therapeutic strategies. Signal Transduct Target Ther 2024; 9:55. [PMID: 38453898 PMCID: PMC10920854 DOI: 10.1038/s41392-024-01769-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/21/2024] [Accepted: 02/03/2024] [Indexed: 03/09/2024] Open
Abstract
Ferroptosis is a non-apoptotic form of regulated cell death characterized by the lethal accumulation of iron-dependent membrane-localized lipid peroxides. It acts as an innate tumor suppressor mechanism and participates in the biological processes of tumors. Intriguingly, mesenchymal and dedifferentiated cancer cells, which are usually resistant to apoptosis and traditional therapies, are exquisitely vulnerable to ferroptosis, further underscoring its potential as a treatment approach for cancers, especially for refractory cancers. However, the impact of ferroptosis on cancer extends beyond its direct cytotoxic effect on tumor cells. Ferroptosis induction not only inhibits cancer but also promotes cancer development due to its potential negative impact on anticancer immunity. Thus, a comprehensive understanding of the role of ferroptosis in cancer is crucial for the successful translation of ferroptosis therapy from the laboratory to clinical applications. In this review, we provide an overview of the recent advancements in understanding ferroptosis in cancer, covering molecular mechanisms, biological functions, regulatory pathways, and interactions with the tumor microenvironment. We also summarize the potential applications of ferroptosis induction in immunotherapy, radiotherapy, and systemic therapy, as well as ferroptosis inhibition for cancer treatment in various conditions. We finally discuss ferroptosis markers, the current challenges and future directions of ferroptosis in the treatment of cancer.
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Affiliation(s)
- Qian Zhou
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Furong Laboratory, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Yu Meng
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Furong Laboratory, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Daishi Li
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Furong Laboratory, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Lei Yao
- Department of General Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Jiayuan Le
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Furong Laboratory, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Yihuang Liu
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Furong Laboratory, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Yuming Sun
- Department of Plastic and Cosmetic Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Furong Zeng
- Department of Oncology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
- Furong Laboratory, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
| | - Guangtong Deng
- Department of Dermatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
- Furong Laboratory, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
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Zhang Z, Leng XK, Zhai YY, Zhang X, Sun ZW, Xiao JY, Lu JF, Liu K, Xia B, Gao Q, Jia M, Xu CQ, Jiang YN, Zhang XG, Tao KS, Wu JW. Deficiency of ASGR1 promotes liver injury by increasing GP73-mediated hepatic endoplasmic reticulum stress. Nat Commun 2024; 15:1908. [PMID: 38459023 PMCID: PMC10924105 DOI: 10.1038/s41467-024-46135-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 02/13/2024] [Indexed: 03/10/2024] Open
Abstract
Liver injury is a core pathological process in the majority of liver diseases, yet the genetic factors predisposing individuals to its initiation and progression remain poorly understood. Here we show that asialoglycoprotein receptor 1 (ASGR1), a lectin specifically expressed in the liver, is downregulated in patients with liver fibrosis or cirrhosis and male mice with liver injury. ASGR1 deficiency exacerbates while its overexpression mitigates acetaminophen-induced acute and CCl4-induced chronic liver injuries in male mice. Mechanistically, ASGR1 binds to an endoplasmic reticulum stress mediator GP73 and facilitates its lysosomal degradation. ASGR1 depletion increases circulating GP73 levels and promotes the interaction between GP73 and BIP to activate endoplasmic reticulum stress, leading to liver injury. Neutralization of GP73 not only attenuates ASGR1 deficiency-induced liver injuries but also improves survival in mice received a lethal dose of acetaminophen. Collectively, these findings identify ASGR1 as a potential genetic determinant of susceptibility to liver injury and propose it as a therapeutic target for the treatment of liver injury.
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Affiliation(s)
- Zhe Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Xiang Kai Leng
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Yuan Yuan Zhai
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Xiao Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Zhi Wei Sun
- Beijing Sungen Biomedical Technology Co. Ltd, Beijing, China
| | - Jun Ying Xiao
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Jun Feng Lu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Kun Liu
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Air Force Medical University, Xi'an, China
| | - Bo Xia
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Qi Gao
- Beijing Sungen Biomedical Technology Co. Ltd, Beijing, China
| | - Miao Jia
- Beijing Sungen Biomedical Technology Co. Ltd, Beijing, China
| | - Cheng Qi Xu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Na Jiang
- Department of Pathology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiao Gang Zhang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
| | - Kai Shan Tao
- Department of Hepatobiliary Surgery, Xi-Jing Hospital, Air Force Medical University, Xi'an, China.
| | - Jiang Wei Wu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China.
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Torigoe TH, Willcox DC, Shimabukuro M, Higa M, Gerschenson M, Andrukhiv A, Suzuki M, Morris BJ, Chen R, Gojanovich GS, Allsopp RC, Willcox BJ. Novel protective effect of the FOXO3 longevity genotype on mechanisms of cellular aging in Okinawans. NPJ Aging 2024; 10:18. [PMID: 38459055 PMCID: PMC10923797 DOI: 10.1038/s41514-024-00142-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 02/06/2024] [Indexed: 03/10/2024]
Abstract
The genetic association of FOXO3 genotypes with human longevity is well established, although the mechanism is not fully understood. We now report on the relationship of the FOXO3 longevity variant rs2802292 with telomere length, telomerase activity, FOXO3 expression, and inflammatory cytokine levels in men and women. In agreement with earlier work, the FOXO3 longevity variant conferred protection against telomere shortening of peripheral blood mononuclear cells from adults aged 55 years and older. This was accompanied by higher levels of telomerase activity in mononuclear cells for carriers of the longevity-associated FOXO3 G-allele of SNP rs2802292 (P = 0.015). FOXO3 mRNA expression increased slightly with age in both young (P = 0.02) and old (P = 0.08) G-allele carriers. Older female G-allele carriers displayed a modest decline in levels of pro-inflammatory cytokine IL-6 with age (P = 0.07). In contrast, older male G-allele carriers displayed an age-dependent increase in levels of anti-inflammatory cytokine IL-10 with age (P = 0.04). Thus, FOXO3 may act through several different pro-longevity mechanisms, which may differ by age and sex.
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Affiliation(s)
- Trevor H Torigoe
- Institute for Biogenesis Research, Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA.
| | - D Craig Willcox
- Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA
- Department of Human Welfare, Okinawa International University, Ginowan, Okinawa, Japan
- Okinawa Research Center for Longevity Science, Urasoe, Okinawa, Japan
- Department of Research, Kuakini Medical Center, Honolulu, HI, USA
| | - Michio Shimabukuro
- Department of Diabetes, Endocrinology and Metabolism, Fukushima Medical University School of Medicine, Fukushima, Fukushima, Japan
- Diabetes and Life-Style Related Disease Center, Tomishiro Central Hospital, Tomishiro, Okinawa, Japan
| | - Moritake Higa
- Diabetes and Life-Style Related Disease Center, Tomishiro Central Hospital, Tomishiro, Okinawa, Japan
| | - Mariana Gerschenson
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA
| | - Anastasia Andrukhiv
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA
| | - Makoto Suzuki
- Okinawa Research Center for Longevity Science, Urasoe, Okinawa, Japan
| | - Brian J Morris
- Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA
- Department of Research, Kuakini Medical Center, Honolulu, HI, USA
- School of Medical Sciences, University of Sydney, Sydney, NSW, Australia
| | - Randi Chen
- Department of Research, Kuakini Medical Center, Honolulu, HI, USA
| | - Greg S Gojanovich
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA
| | - Richard C Allsopp
- Institute for Biogenesis Research, Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA.
- Okinawa Research Center for Longevity Science, Urasoe, Okinawa, Japan.
| | - Bradley J Willcox
- Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, USA
- Okinawa Research Center for Longevity Science, Urasoe, Okinawa, Japan
- Department of Research, Kuakini Medical Center, Honolulu, HI, USA
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127
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Rafińska K, Niedojadło K, Świdziński M, Bednarska-Kozakiewicz E. Distribution of exchangeable Ca 2+ during the process of Larix decidua Mill. pollination and germination. Sci Rep 2024; 14:5639. [PMID: 38454044 PMCID: PMC10920793 DOI: 10.1038/s41598-024-54903-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 02/18/2024] [Indexed: 03/09/2024] Open
Abstract
The involvement of Ca2+ ions in angiosperms sexual processes is well established, while in gymnosperms, such knowledge remains limited and is still a topic of discussion. In this study, we focused on Larix decidua, using Alizarin-red S staining and the pyroantimonate method to examine the tissue and subcellular distribution of free and loosely bound Ca2+ ions at different stages of the male gametophyte's development and its interaction with the ovule. Our findings show that in larch, both the germination of pollen grains and the growth of pollen tubes occur in an environment rich in Ca2+. These ions play a crucial role in the adhesion of the pollen grain to the stigmatic tip and its subsequent movement to the micropylar canal. There is a significant presence of free and loosely bound Ca2+ ions in both the fluid of the micropylar canal and the extracellular matrix of the nucellus. As the pollen tube extends through the nucellus, we observed a notable accumulation of Ca2+ ions just above the entry to the mature archegonium, a region likely crucial for the male gametophyte's directional growth. Meanwhile, the localized presence of free and loosely bound Ca2+ ions within the egg cell cytoplasm may inhibit the pollen tubes growth and rupture, playing an important role in fertilization.
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Affiliation(s)
- Katarzyna Rafińska
- Department of Environmental Chemistry and Bioanalysis, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, 87-100, Toruń, Poland
| | - Katarzyna Niedojadło
- Department of Cellular and Molecular Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1, 87-100, Toruń, Poland.
| | - Michał Świdziński
- Department of Cellular and Molecular Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1, 87-100, Toruń, Poland
| | - Elżbieta Bednarska-Kozakiewicz
- Department of Cellular and Molecular Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1, 87-100, Toruń, Poland
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128
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Chen C, Li H, Zhang J, Cheng SC. Exploring the limitations of mitochondrial dye as a genuine horizontal mitochondrial transfer surrogate. Commun Biol 2024; 7:281. [PMID: 38448655 PMCID: PMC10917768 DOI: 10.1038/s42003-024-05964-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 02/23/2024] [Indexed: 03/08/2024] Open
Abstract
Rosamine-based mitochondrial dyes, such as Mitotracker Red, have commonly been employed to visualize mitochondrial localization within cells due to their preferential accumulation in organelles with membrane potential. Consequently, Mitotracker Red has often served as a surrogate indicator for tracking mitochondrial movement between neighboring cells. However, it is important to note that the presence of membrane potential in the cell membrane and other organelles may lead to the non-specific partial enrichment of Mitotracker Red in locations other than mitochondria. This study comprehensively investigates the reliability of mitochondrial dye as a marker for studying horizontal mitochondrial transfer (HMT). By meticulous replicating of previous experiments and comparing the efficiency of mitochondrial dye transfer with that of mito-targeted GFP, our findings confirm that HMT occurs at significantly lower efficiency than previously indicated by Mitotracker dye. Subsequent experiments involving mitochondria-deficient cells robustly demonstrates the non-specificity of mitochondrial dye as indicator for mitochondria. We advocate for a thorough reevaluation of existing literature in this field and propose exploration of alternative techniques to enhance the investigation of HMT. By addressing these pivotal aspects, we can advance our understanding of cellular dynamics and pave the way for future explorations in this captivating field.
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Affiliation(s)
- Chuanfang Chen
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University; Xiamen, Fujian, 361102, China.
| | - Haige Li
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University; Xiamen, Fujian, 361102, China
| | - Jia Zhang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University; Xiamen, Fujian, 361102, China
| | - Shih-Chin Cheng
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University; Xiamen, Fujian, 361102, China.
- Department of Gastroenterology, The National Key Clinical Specialty, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, 361004, China.
- Department of Digestive Disease, School of Medicine, Xiamen University, Xiamen, Fujian, 361004, China.
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129
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Hirano M, Yonemaru Y, Shimozono S, Sugiyama M, Ando R, Okada Y, Fujiwara T, Miyawaki A. StayGold photostability under different illumination modes. Sci Rep 2024; 14:5541. [PMID: 38448511 PMCID: PMC10918099 DOI: 10.1038/s41598-024-55213-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/21/2024] [Indexed: 03/08/2024] Open
Abstract
StayGold is a bright fluorescent protein (FP) that is over one order of magnitude more photostable than any of the currently available FPs across the full range of illumination intensities used in widefield microscopy and structured illumination microscopy, the latter of which is a widefield illumination-based technique. To compare the photostability of StayGold under other illumination modes with that of three other green-emitting FPs, namely EGFP, mClover3, and mNeonGreen, we expressed all four FPs as fusions to histone 2B in HeLa cells. Unlike the case of widefield microscopy, the photobleaching behavior of these FPs in laser scanning confocal microscopy (LSCM) is complicated. The outstanding photostability of StayGold observed in multi-beam LSCM was variably attenuated in single-beam LSCM, which produces intermittent and instantaneously strong illumination. We systematically examined the effects of different single-beam LSCM beam-scanning patterns on the photostability of the FPs in living HeLa cells. This study offers relevant guidelines for researchers who aim to achieve sustainable live cell imaging by resolving problems related to FP photostability. We also provide evidence for measurable sensitivity of the photostability of StayGold to chemical fixation.
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Affiliation(s)
- Masahiko Hirano
- Laboratory for Cell Function Dynamics, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-City, Saitama, 351-0198, Japan
- Biotechnological Optics Research Team, RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako-City, Saitama, 351-0198, Japan
| | - Yasuo Yonemaru
- Evident Corporation, 67-4 Takakura-Machi, Hachioji-City, Tokyo, 190-0033, Japan
- RIKEN CBS-EVIDENT Open Collaboration Center, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-City, Saitama, 351-0198, Japan
| | - Satoshi Shimozono
- Laboratory for Cell Function Dynamics, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-City, Saitama, 351-0198, Japan
| | - Mayu Sugiyama
- Laboratory for Cell Function Dynamics, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-City, Saitama, 351-0198, Japan
| | - Ryoko Ando
- Laboratory for Cell Function Dynamics, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-City, Saitama, 351-0198, Japan
- Department of Optical Biomedical Science, Institute for Life and Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan
| | - Yasushi Okada
- Laboratory for Cell Polarity Regulation, RIKEN Center for Biosystems Dynamics Research, Suita, Osaka, 565-0874, Japan
- Department of Cell Biology, Department of Physics, UBI and WPI-IRCN, The University of Tokyo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Takahiro Fujiwara
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto, 606-8501, Japan
| | - Atsushi Miyawaki
- Laboratory for Cell Function Dynamics, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-City, Saitama, 351-0198, Japan.
- Biotechnological Optics Research Team, RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako-City, Saitama, 351-0198, Japan.
- RIKEN CBS-EVIDENT Open Collaboration Center, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-City, Saitama, 351-0198, Japan.
- Laboratory of Bioresponse Analysis, Institute for Life and Medical Sciences, Kyoto University, Kyoto, 606-8507, Japan.
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130
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Derouiche F, Djemil R, Sebihi FZ, Douaouya L, Maamar H, Benjemana K. High methionine diet mediated oxidative stress and proteasome impairment causes toxicity in liver. Sci Rep 2024; 14:5555. [PMID: 38448604 PMCID: PMC10917754 DOI: 10.1038/s41598-024-55857-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/28/2024] [Indexed: 03/08/2024] Open
Abstract
Methionine (Met) rich diet inducing oxidative stress is reported to alter many organs. Proteasome as a regulator of oxidative stress can be targeted. This study was performed to investigate if excessive methionine supplementation causes hepatotoxicity related to proteasome dysfunction under endogenous oxidative stress in rats. Male Wistar albino rats (n = 16) were divided into controls and treated groups. The treated rats (n = 08) received orally L-methionine (1 g/kg/day) for 21 days. Total homocysteine (tHcy), total oxidant status (TOS), total antioxidant status (TAS), hepatic enzymes levels: aspartate aminotransferase (AST), alanine aminotransferase (ALT), lactate dehydrogenase (LDH), alkaline phosphatase (ALP), with total bilirubin (TBil), albumin (Alb), and C-reactive protein (CRP) were determined in plasma by biochemical assays. Liver supernatants were used for malondialdehyde (MDA), protein carbonyls (PC), glutathione (GSH), catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), 20S proteasome activities and their subunits expression, tumor necrosis factor-α (TNF-α), and interleukin 6 (IL-6) evaluation by appropriate methods and light microscopy for liver histological examination. Methionine treatment increased homocysteine, TOS, oxidative stress index (OSI), MDA and PC but decreased TAS, GSH, CAT, SOD, GPx with the 20S proteasome activities and their β subunits expression. Liver proteins: AST, ALT, LDH, ALP, TBil and CRP were increased but Alb was decreased. Liver histology was also altered. An increase in liver TNF-α and IL-6 levels were observed. These findings indicated that methionine supplementation associated oxidative stress and proteasome dysfunction, caused hepatotoxicity and inflammation in rat. Further investigations should be to better understand the relation between methionine, oxidative stress, proteasome, and liver injuries.
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Affiliation(s)
- Faouzia Derouiche
- Biotechnology, Water, Environment and Health Laboratory, Faculty of Natural and Life Sciences, University Abbes Lagherour, Khenchela, Algeria.
- Department of Molecular and Cellular Biology, Faculty of Natural and Life Sciences, University Abbes Lagherour, Khenchela, Algeria.
| | - Randa Djemil
- Biotechnology, Water, Environment and Health Laboratory, Faculty of Natural and Life Sciences, University Abbes Lagherour, Khenchela, Algeria
- Department of Molecular and Cellular Biology, Faculty of Natural and Life Sciences, University Abbes Lagherour, Khenchela, Algeria
| | - Fatima Zohra Sebihi
- Department of Molecular and Cellular Biology, Faculty of Natural and Life Sciences, University Abbes Lagherour, Khenchela, Algeria
| | - Lilia Douaouya
- Department of Molecular and Cellular Biology, Faculty of Natural and Life Sciences, University Abbes Lagherour, Khenchela, Algeria
| | - Hichem Maamar
- Department of Molecular and Cellular Biology, Faculty of Natural and Life Sciences, University Abbes Lagherour, Khenchela, Algeria
| | - Katia Benjemana
- Biotechnology, Water, Environment and Health Laboratory, Faculty of Natural and Life Sciences, University Abbes Lagherour, Khenchela, Algeria
- Department of Molecular and Cellular Biology, Faculty of Natural and Life Sciences, University Abbes Lagherour, Khenchela, Algeria
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131
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Siegfried H, Farkouh G, Le Borgne R, Pioche-Durieu C, De Azevedo Laplace T, Verraes A, Daunas L, Verbavatz JM, Heuzé ML. The ER tether VAPA is required for proper cell motility and anchors ER-PM contact sites to focal adhesions. eLife 2024; 13:e85962. [PMID: 38446032 PMCID: PMC10917420 DOI: 10.7554/elife.85962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/07/2024] [Indexed: 03/07/2024] Open
Abstract
Cell motility processes highly depend on the membrane distribution of Phosphoinositides, giving rise to cytoskeleton reshaping and membrane trafficking events. Membrane contact sites serve as platforms for direct lipid exchange and calcium fluxes between two organelles. Here, we show that VAPA, an ER transmembrane contact site tether, plays a crucial role during cell motility. CaCo2 adenocarcinoma epithelial cells depleted for VAPA exhibit several collective and individual motility defects, disorganized actin cytoskeleton and altered protrusive activity. During migration, VAPA is required for the maintenance of PI(4)P and PI(4,5)P2 levels at the plasma membrane, but not for PI(4)P homeostasis in the Golgi and endosomal compartments. Importantly, we show that VAPA regulates the dynamics of focal adhesions (FA) through its MSP domain, is essential to stabilize and anchor ventral ER-PM contact sites to FA, and mediates microtubule-dependent FA disassembly. To conclude, our results reveal unknown functions for VAPA-mediated membrane contact sites during cell motility and provide a dynamic picture of ER-PM contact sites connection with FA mediated by VAPA.
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Affiliation(s)
- Hugo Siegfried
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013ParisFrance
| | - Georges Farkouh
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013ParisFrance
| | - Rémi Le Borgne
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013ParisFrance
| | | | | | - Agathe Verraes
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013ParisFrance
| | - Lucien Daunas
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013ParisFrance
| | | | - Mélina L Heuzé
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013ParisFrance
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132
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Hasibi R, Michoel T, Oyarzún DA. Integration of graph neural networks and genome-scale metabolic models for predicting gene essentiality. NPJ Syst Biol Appl 2024; 10:24. [PMID: 38448436 PMCID: PMC10917767 DOI: 10.1038/s41540-024-00348-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 02/08/2024] [Indexed: 03/08/2024] Open
Abstract
Genome-scale metabolic models are powerful tools for understanding cellular physiology. Flux balance analysis (FBA), in particular, is an optimization-based approach widely employed for predicting metabolic phenotypes. In model microbes such as Escherichia coli, FBA has been successful at predicting essential genes, i.e. those genes that impair survival when deleted. A central assumption in this approach is that both wild type and deletion strains optimize the same fitness objective. Although the optimality assumption may hold for the wild type metabolic network, deletion strains are not subject to the same evolutionary pressures and knock-out mutants may steer their metabolism to meet other objectives for survival. Here, we present FlowGAT, a hybrid FBA-machine learning strategy for predicting essentiality directly from wild type metabolic phenotypes. The approach is based on graph-structured representation of metabolic fluxes predicted by FBA, where nodes correspond to enzymatic reactions and edges quantify the propagation of metabolite mass flow between a reaction and its neighbours. We integrate this information into a graph neural network that can be trained on knock-out fitness assay data. Comparisons across different model architectures reveal that FlowGAT predictions for E. coli are close to those of FBA for several growth conditions. This suggests that essentiality of enzymatic genes can be predicted by exploiting the inherent network structure of metabolism. Our approach demonstrates the benefits of combining the mechanistic insights afforded by genome-scale models with the ability of deep learning to infer patterns from complex datasets.
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Affiliation(s)
- Ramin Hasibi
- Computational Biology Unit, Department of Informatics, University of Bergen, Bergen, Norway
| | - Tom Michoel
- Computational Biology Unit, Department of Informatics, University of Bergen, Bergen, Norway
| | - Diego A Oyarzún
- School of Biological Sciences, University of Edinburgh, Edinburgh, UK.
- School of Informatics, University of Edinburgh, Edinburgh, UK.
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133
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Muroňová J, Kherraf ZE, Giordani E, Lambert E, Eckert S, Cazin C, Amiri-Yekta A, Court M, Chevalier G, Martinez G, Neirijnck Y, Kühne F, Wehrli L, Klena N, Hamel V, De Macedo L, Escoffier J, Guichard P, Coutton C, Mustapha SFB, Kharouf M, Bouin AP, Zouari R, Thierry-Mieg N, Nef S, Geimer S, Loeuillet C, Ray PF, Arnoult C. Lack of CCDC146, a ubiquitous centriole and microtubule-associated protein, leads to non-syndromic male infertility in human and mouse. eLife 2024; 12:RP86845. [PMID: 38441556 PMCID: PMC10942651 DOI: 10.7554/elife.86845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024] Open
Abstract
From a cohort of 167 infertile patients suffering from multiple morphological abnormalities of the flagellum (MMAF), pathogenic bi-allelic mutations were identified in the CCDC146 gene. In somatic cells, CCDC146 is located at the centrosome and at multiple microtubule-related organelles during mitotic division, suggesting that it is a microtubule-associated protein (MAP). To decipher the molecular pathogenesis of infertility associated with CCDC146 mutations, a Ccdc146 knock-out (KO) mouse line was created. KO male mice were infertile, and sperm exhibited a phenotype identical to CCDC146 mutated patients. CCDC146 expression starts during late spermiogenesis. In the spermatozoon, the protein is conserved but is not localized to centrioles, unlike in somatic cells, rather it is present in the axoneme at the level of microtubule doublets. Expansion microscopy associated with the use of the detergent sarkosyl to solubilize microtubule doublets suggests that the protein may be a microtubule inner protein (MIP). At the subcellular level, the absence of CCDC146 impacted all microtubule-based organelles such as the manchette, the head-tail coupling apparatus (HTCA), and the axoneme. Through this study, a new genetic cause of infertility and a new factor in the formation and/or structure of the sperm axoneme were characterized.
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Affiliation(s)
- Jana Muroňová
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
| | - Zine Eddine Kherraf
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
- UM GI-DPI, CHU Grenoble AlpesGrenobleFrance
| | - Elsa Giordani
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
| | - Emeline Lambert
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
| | - Simon Eckert
- Cell Biology/ Electron Microscopy, University of BayreuthBayreuthGermany
| | - Caroline Cazin
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
- UM GI-DPI, CHU Grenoble AlpesGrenobleFrance
| | - Amir Amiri-Yekta
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECRTehranIslamic Republic of Iran
| | - Magali Court
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
| | - Geneviève Chevalier
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
| | - Guillaume Martinez
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
- UM de Génétique Chromosomique, Hôpital Couple-Enfant, CHU Grenoble AlpesGrenobleFrance
| | - Yasmine Neirijnck
- Department of Genetic Medicine and Development, University of Geneva Medical SchoolGenevaSwitzerland
| | - Francoise Kühne
- Department of Genetic Medicine and Development, University of Geneva Medical SchoolGenevaSwitzerland
| | - Lydia Wehrli
- Department of Genetic Medicine and Development, University of Geneva Medical SchoolGenevaSwitzerland
| | - Nikolai Klena
- University of Geneva, Department of Molecular and Cellular Biology, Sciences IIIGenevaSwitzerland
| | - Virginie Hamel
- University of Geneva, Department of Molecular and Cellular Biology, Sciences IIIGenevaSwitzerland
| | - Lisa De Macedo
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
| | - Jessica Escoffier
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
| | - Paul Guichard
- University of Geneva, Department of Molecular and Cellular Biology, Sciences IIIGenevaSwitzerland
| | - Charles Coutton
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
- UM de Génétique Chromosomique, Hôpital Couple-Enfant, CHU Grenoble AlpesGrenobleFrance
| | | | - Mahmoud Kharouf
- Polyclinique les Jasmins, Centre d'Aide Médicale à la Procréation, Centre Urbain NordTunisTunisia
| | - Anne-Pacale Bouin
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
| | - Raoudha Zouari
- Polyclinique les Jasmins, Centre d'Aide Médicale à la Procréation, Centre Urbain NordTunisTunisia
| | - Nicolas Thierry-Mieg
- Laboratoire TIMC/MAGe, CNRS UMR 5525, Pavillon Taillefer, Faculté de MedecineLa TroncheFrance
| | - Serge Nef
- Department of Genetic Medicine and Development, University of Geneva Medical SchoolGenevaSwitzerland
| | - Stefan Geimer
- Cell Biology/ Electron Microscopy, University of BayreuthBayreuthGermany
| | - Corinne Loeuillet
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
| | - Pierre F Ray
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
- UM GI-DPI, CHU Grenoble AlpesGrenobleFrance
| | - Christophe Arnoult
- Institute for Advanced Biosciences (IAB), INSERM 1209GrenobleFrance
- Institute for Advanced Biosciences (IAB), CNRS UMR 5309GrenobleFrance
- Institute for Advanced Biosciences (IAB), Université Grenoble AlpesGrenobleFrance
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134
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Park WH. Propyl gallate induces cell death in human pulmonary fibroblast through increasing reactive oxygen species levels and depleting glutathione. Sci Rep 2024; 14:5375. [PMID: 38438412 PMCID: PMC10912098 DOI: 10.1038/s41598-024-52849-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 01/24/2024] [Indexed: 03/06/2024] Open
Abstract
Propyl gallate (PG) exhibits an anti-growth effect on various cell types. The present study investigated the impact of PG on the levels of reactive oxygen species (ROS) and glutathione (GSH) in primary human pulmonary fibroblast (HPF) cells. Moreover, the effects of N-acetyl cysteine (NAC, an antioxidant), L-buthionine sulfoximine (BSO, a GSH synthesis inhibitor), and small interfering RNA (siRNAs) against various antioxidant genes on ROS and GSH levels and cell death were examined in PG-treated HPF cells. PG (100-800 μM) increased the levels of total ROS and O2·- at early time points of 30-180 min and 24 h, whereas PG (800-1600 μM) increased GSH-depleted cell number at 24 h and reduced GSH levels at 30-180 min. PG downregulated the activity of superoxide dismutase (SOD) and upregulated the activity of catalase in HPF cells. Treatment with 800 μM PG increased the number of apoptotic cells and cells that lost mitochondrial membrane potential (MMP; ΔΨm). NAC treatment attenuated HPF cell death and MMP (ΔΨm) loss induced by PG, accompanied by a decrease in GSH depletion, whereas BSO exacerbated the cell death and MMP (ΔΨm) loss without altering ROS and GSH depletion levels. Furthermore, siRNA against SOD1, SOD2, or catalase attenuated cell death in PG-treated HPF cells, whereas siRNA against GSH peroxidase enhanced cell death. In conclusion, PG induced cell death in HPF cells by increasing ROS levels and depleting GSH. NAC was found to decrease HPF cell death induced by PG, while BSO enhanced cell death. The findings shed light on how manipulating the antioxidant system influence the cytotoxic effects of PG in HPF cells.
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Affiliation(s)
- Woo Hyun Park
- Department of Physiology, Medical School, Jeonbuk National University, 20 Geonji-Ro, Deokjin, Jeonju, Jeollabuk, 54907, Republic of Korea.
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135
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Zhang FY, Wu L, Zhang TN, Chen HH. KCTD15 acts as an anti-tumor factor in colorectal cancer cells downstream of the demethylase FTO and the m6A reader YTHDF2. Commun Biol 2024; 7:262. [PMID: 38438714 PMCID: PMC10912199 DOI: 10.1038/s42003-024-05880-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 02/01/2024] [Indexed: 03/06/2024] Open
Abstract
Potassium Channel Tetramerization Domain Containing 15 (KCTD15) participates in the carcinogenesis of several solid malignancies; however, its role in colorectal cancer (CRC) remains unclear. Here we find that KCTD15 exhibits lower expression in CRC tissues as compared to para-carcinoma tissues. Tetracycline (tet)-induced overexpression and knockdown of KCTD15 confirms KCTD15 as an anti-proliferative and pro-apoptotic factor in CRC both in vitro and in xenografted tumors. N6-methyladenosine (m6A) is known to affect the expression, stabilization, and degradation of RNAs with this modification. We demonstrate that upregulation of fat mass and obesity-associated protein (FTO), a classical m6A eraser, prevents KCTD15 mRNA degradation in CRC cells. Less KCTD15 RNA is recognized by m6A 'reader' YTH N6-Methyladenosine RNA Binding Protein F2 (YTHDF2) in FTO-overexpressed cells. Moreover, KCTD15 overexpression decreases protein expression of histone deacetylase 1 (HDAC1) but increases acetylation of critical tumor suppressor p53 at Lys373 and Lys382. Degradation of p53 is delayed in CRC cells post-KCTD15 overexpression. We further show that the regulatory effects of KCTD15 on p53 are HDAC1-dependent. Collectively, we conclude that KCTD15 functions as an anti-growth factor in CRC cells, and its expression is orchestrated by the FTO-YTHDF2 axis. Enhanced p53 protein stabilization may contribute to KCTD15's actions in CRC cells.
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Affiliation(s)
- Fang-Yuan Zhang
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Lin Wu
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tie-Ning Zhang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China.
| | - Huan-Huan Chen
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China.
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Yan Y, Zhou S, Chen X, Yi Q, Feng S, Zhao Z, Liu Y, Liang Q, Xu Z, Li Z, Sun L. Suppression of ITPKB degradation by Trim25 confers TMZ resistance in glioblastoma through ROS homeostasis. Signal Transduct Target Ther 2024; 9:58. [PMID: 38438346 PMCID: PMC10912509 DOI: 10.1038/s41392-024-01763-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 01/05/2024] [Accepted: 01/29/2024] [Indexed: 03/06/2024] Open
Abstract
Temozolomide (TMZ) represents a standard-of-care chemotherapeutic agent in glioblastoma (GBM). However, the development of drug resistance constitutes a significant hurdle in the treatment of malignant glioma. Although specific innovative approaches, such as immunotherapy, have shown favorable clinical outcomes, the inherent invasiveness of most gliomas continues to make them challenging to treat. Consequently, there is an urgent need to identify effective therapeutic targets for gliomas to overcome chemoresistance and facilitate drug development. This investigation used mass spectrometry to examine the proteomic profiles of six pairs of GBM patients who underwent standard-of-care treatment and surgery for both primary and recurrent tumors. A total of 648 proteins exhibiting significant differential expression were identified. Gene Set Enrichment Analysis (GSEA) unveiled notable alterations in pathways related to METABOLISM_OF_LIPIDS and BIOLOGICAL_OXIDATIONS between the primary and recurrent groups. Validation through glioma tissue arrays and the Xiangya cohort confirmed substantial upregulation of inositol 1,4,5-triphosphate (IP3) kinase B (ITPKB) in the recurrence group, correlating with poor survival in glioma patients. In TMZ-resistant cells, the depletion of ITPKB led to an increase in reactive oxygen species (ROS) related to NADPH oxidase (NOX) activity and restored cell sensitivity to TMZ. Mechanistically, the decreased phosphorylation of the E3 ligase Trim25 at the S100 position in recurrent GBM samples accounted for the weakened ITPKB ubiquitination. This, in turn, elevated ITPKB stability and impaired ROS production. Furthermore, ITPKB depletion or the ITPKB inhibitor GNF362 effectively overcome TMZ chemoresistance in a glioma xenograft mouse model. These findings reveal a novel mechanism underlying TMZ resistance and propose ITPKB as a promising therapeutic target for TMZ-resistant GBM.
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Affiliation(s)
- Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Shangjun Zhou
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Xi Chen
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Qiaoli Yi
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Songshan Feng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Zijin Zhao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Yuanhong Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Qiuju Liang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, 410008, China.
| | - Zhi Li
- Xiangya Cancer Center, Xiangya Hospital, Central South University, Changsha, 410008, China.
- Key Laboratory of Molecular Radiation Oncology Hunan Province, Changsha, 410008, China.
- Institute of Cancer Research, National Clinical Research Center for Geriatric Disorders (Xiangya), Xiangya Hospital, Central South University, Changsha, 410008, China.
| | - Lunquan Sun
- Xiangya Cancer Center, Xiangya Hospital, Central South University, Changsha, 410008, China.
- Key Laboratory of Molecular Radiation Oncology Hunan Province, Changsha, 410008, China.
- Institute of Cancer Research, National Clinical Research Center for Geriatric Disorders (Xiangya), Xiangya Hospital, Central South University, Changsha, 410008, China.
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137
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Zehrer AC, Martin-Villalba A, Diederich B, Ewers H. An open-source, high-resolution, automated fluorescence microscope. eLife 2024; 12:RP89826. [PMID: 38436658 PMCID: PMC10942636 DOI: 10.7554/elife.89826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
Fluorescence microscopy is a fundamental tool in the life sciences, but the availability of sophisticated equipment required to yield high-quality, quantitative data is a major bottleneck in data production in many laboratories worldwide. This problem has long been recognized and the abundancy of low-cost electronics and the simplification of fabrication through 3D-printing have led to the emergence of open-source scientific hardware as a research field. Cost effective fluorescence microscopes can be assembled from cheaply mass-produced components, but lag behind commercial solutions in image quality. On the other hand, blueprints of sophisticated microscopes such as light-sheet or super-resolution systems, custom-assembled from high quality parts, are available, but require a high level of expertise from the user. Here, we combine the UC2 microscopy toolbox with high-quality components and integrated electronics and software to assemble an automated high-resolution fluorescence microscope. Using this microscope, we demonstrate high resolution fluorescence imaging for fixed and live samples. When operated inside an incubator, long-term live-cell imaging over several days was possible. Our microscope reaches single molecule sensitivity, and we performed single particle tracking and SMLM super-resolution microscopy experiments in cells. Our setup costs a fraction of its commercially available counterparts but still provides a maximum of capabilities and image quality. We thus provide a proof of concept that high quality scientific data can be generated by lay users with a low-budget system and open-source software. Our system can be used for routine imaging in laboratories that do not have the means to acquire commercial systems and through its affordability can serve as teaching material to students.
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Affiliation(s)
| | - Ana Martin-Villalba
- Department of Molecular Neurobiology, German Cancer Research CenteHeidelbergGermany
| | | | - Helge Ewers
- Institut für Chemie und Biochemie, Freie Universität BerlinBerlinGermany
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138
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Carpenter MA, Thyagarajan A, Owens M, Annamraju R, Borchers CB, Travers JB, Kemp MG. The acid sphingomyelinase inhibitor imipramine enhances the release of UV photoproduct-containing DNA in small extracellular vesicles in UVB-irradiated human skin. Photochem Photobiol 2024. [PMID: 38433456 DOI: 10.1111/php.13932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 03/05/2024]
Abstract
Nucleic acids, lipids, and other cell components can be found within different types of extracellular vesicles (EVs), which include apoptotic bodies (ABs), large extracellular vesicles (LEVs), and small extracellular vesicles (SEVs). Release of LEVs from cells can be reduced by genetic or pharmacological inhibition of the enzyme acid sphinogomyelinase (aSMase), and indeed several studies have demonstrated a role for the clinically approved aSMase inhibitor imipramine in blocking LEV release, including in response to UVB exposure. Given that exposure of keratinocytes to UVB radiation results in the generation of UVR photoproducts in DNA that can subsequently be found in association with ABs and SEVs, we examined how imipramine impacts the release of extracellular DNA containing UVR photoproducts at an early time point after UVR exposure. Using several different model systems, including cultured keratinocytes in vitro, discarded human surgical skin ex vivo, and skin biopsies obtained from treated human subjects, these pilot studies suggest that imipramine treatment stimulates the release of CPD-containing, SEV-associated DNA. These surprising findings indicate that LEV and SEV generation pathways could be linked in UVB-irradiated cells and that imipramine may exacerbate the systemic effects of extracellular UVR-damaged DNA throughout the body.
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Affiliation(s)
- M Alexandra Carpenter
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio, USA
| | - Anita Thyagarajan
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio, USA
| | - Madison Owens
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio, USA
| | - Risha Annamraju
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio, USA
| | - Christina B Borchers
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio, USA
| | - Jeffrey B Travers
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio, USA
- Department of Dermatology, Wright State University Boonshoft School of Medicine, Dayton, Ohio, USA
- Dayton VA Medical Center, Dayton, Ohio, USA
| | - Michael G Kemp
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio, USA
- Dayton VA Medical Center, Dayton, Ohio, USA
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139
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Liu B, Liu XY, Wang GP, Chen YX. The immune cell infiltration-associated molecular subtypes and gene signature predict prognosis for osteosarcoma patients. Sci Rep 2024; 14:5184. [PMID: 38431660 PMCID: PMC10908810 DOI: 10.1038/s41598-024-55890-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 02/28/2024] [Indexed: 03/05/2024] Open
Abstract
Host immune dysregulation involves in the initiation and development of osteosarcoma (OS). However, the exact role of immune cells in OS remains unknown. We aimed to distinguish the molecular subtypes and establish a prognostic model in OS patients based on immunocyte infiltration. The gene expression profile and corresponding clinical feature of OS patients were obtained from TARGET and GSE21257 datasets. MCP-counter and univariate Cox regression analyses were applied to identify immune cell infiltration-related molecular subgroups. Functional enrichment analysis and immunocyte infiltration analysis were performed between two subgroups. Furthermore, Cox regression and LASSO analyses were performed to establish the prognostic model for the prediction of prognosis and metastasis in OS patients. The subgroup with low infiltration of monocytic lineage (ML) was related to bad prognosis in OS patients. 435 DEGs were screened between the two subgroups. Functional enrichment analysis revealed these DEGs were involved in immune- and inflammation-related pathways. Three important genes (including TERT, CCDC26, and IL2RA) were identified to establish the prognostic model. The risk model had good prognostic performance for the prediction of metastasis and overall survival in OS patients. A novel stratification system was established based on ML-related signature. The risk model could predict the metastasis and prognosis in OS patients. Our findings offered a novel sight for the prognosis and development of OS.
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Affiliation(s)
- Bin Liu
- Department of Spine Surgery, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha, 410005, Hunan, China
| | - Xiang-Yang Liu
- Department of Spine Surgery, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha, 410005, Hunan, China
| | - Guo-Ping Wang
- Department of Spine Surgery, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha, 410005, Hunan, China
| | - Yi-Xin Chen
- Department of Rehabilitation Medicine, Xiangya Hospital of Central South University, No. 87, Xiangya Road, Changsha, 410008, Hunan, China.
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140
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de-Carvalho J, Tlili S, Saunders TE, Telley IA. The positioning mechanics of microtubule asters in Drosophila embryo explants. eLife 2024; 12:RP90541. [PMID: 38426416 PMCID: PMC10911390 DOI: 10.7554/elife.90541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024] Open
Abstract
Microtubule asters are essential in localizing the action of microtubules in processes including mitosis and organelle positioning. In large cells, such as the one-cell sea urchin embryo, aster dynamics are dominated by hydrodynamic pulling forces. However, in systems with more densely positioned nuclei such as the early Drosophila embryo, which packs around 6000 nuclei within the syncytium in a crystalline-like order, it is unclear what processes dominate aster dynamics. Here, we take advantage of a cell cycle regulation Drosophila mutant to generate embryos with multiple asters, independent from nuclei. We use an ex vivo assay to further simplify this biological system to explore the forces generated by and between asters. Through live imaging, drug and optical perturbations, and theoretical modeling, we demonstrate that these asters likely generate an effective pushing force over short distances.
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Affiliation(s)
- Jorge de-Carvalho
- Instituto Gulbenkian de Ciência, Fundação Calouste GulbenkianOeirasPortugal
| | - Sham Tlili
- Mechanobiology Institute and Department of Biological Sciences, National University of SingaporeSingaporeSingapore
| | - Timothy E Saunders
- Mechanobiology Institute and Department of Biological Sciences, National University of SingaporeSingaporeSingapore
- Institute of Molecular and Cellular Biology, A*Star, ProteosSingaporeSingapore
- Centre for Mechanochemical Cell Biology, Warwick Medical School, University of WarwickWarwickUnited Kingdom
| | - Ivo A Telley
- Instituto Gulbenkian de Ciência, Fundação Calouste GulbenkianOeirasPortugal
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141
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Chen M, Liu H, Liang W, Huang P, Ye F, Cai Y, Liang Z, Xiong L, Kang L, Huang L. Mitochondrial DNA copy number plays opposing roles in T-lymphocyte infiltration of colorectal cancer based on mismatch repair status: new directions for immunotherapy? Br J Cancer 2024; 130:798-807. [PMID: 38218920 PMCID: PMC10912653 DOI: 10.1038/s41416-023-02568-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 12/13/2023] [Accepted: 12/21/2023] [Indexed: 01/15/2024] Open
Abstract
BACKGROUND Researchers have previously reported that mitochondrial DNA copy number (mtDNA-CN) can play different roles in microsatellite instable/mismatch repair-deficient (MSI/dMMR) and microsatellite stable/mismatch repair-proficient (MSS/pMMR) colorectal cancer (CRC). To support malignancy, dMMR CRC relies on glycolysis, while pMMR CRC favors oxidative phosphorylation. However, it is unclear whether mtDNA-CN changes are related to T cell infiltration in CRC. METHODS The mtDNA-CN was detected by qRT-PCR in 532 patients, and the expression of CD3 and CD8 in 485 patients was detected by immunohistochemistry. The correlation between mtDNA-CN and the prognosis of CRC patients was further analyzed, and the correlation between mtDNA-CN and T lymphocyte infiltration was also analyzed. Biopsy specimens from the immune checkpoint inhibitors (ICIs) treatment cohort were obtained to verify the correlation between mtDNA-CN and the efficacy of ICIs. The effects of mtDNA-CN and MMR status on gene expression were analyzed by RNA-seq. RESULTS Our results show that mtDNA-CN has inverse relationships to CRC prognosis in cases with different MMR statuses, potentially inducing the U-shaped association in CRC. The opposing correlations between mtDNA-CN and T lymphocyte infiltration in cases of dMMR CRC and pMMR CRC further suggest that mtDNA-CN might play an important role in CRC development. More importantly, cases of pMMR CRC with lower mtDNA-CN and of dMMR CRC with higher mtDNA-CN can benefit more dramatically from ICIs. Furthermore, RNA-seq revealed a link between the level of mtDNA-CN and T lymphocyte infiltration in CRC cases with different MMR statuses. CONCLUSION Our study found a potential relationship between mtDNA-CN and CRC development that differs by MMR status, potentially providing a rationale for the use of mtDNA-CN as both a predictive biomarker and a therapeutic target for ICIs.
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Affiliation(s)
- Mian Chen
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430022, Wuhan, Hubei, China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huashan Liu
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wenfeng Liang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Pinzhu Huang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Fujin Ye
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yebing Cai
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhenxing Liang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Li Xiong
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Liang Kang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
| | - Liang Huang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
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142
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Ci M, Zhao G, Li C, Liu R, Hu X, Pan J, Shen Y, Zhang G, Li Y, Zhang L, Liang P, Cui H. OTUD4 promotes the progression of glioblastoma by deubiquitinating CDK1 and activating MAPK signaling pathway. Cell Death Dis 2024; 15:179. [PMID: 38429268 PMCID: PMC10907623 DOI: 10.1038/s41419-024-06569-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 02/15/2024] [Accepted: 02/21/2024] [Indexed: 03/03/2024]
Abstract
Glioblastoma, IDH-Wild type (GBM, CNS WHO Grade 4) is a highly heterogeneous and aggressive primary malignant brain tumor with high morbidity, high mortality, and poor patient prognosis. The global burden of GBM is increasing notably due to limited treatment options, drug delivery problems, and the lack of characteristic molecular targets. OTU deubiquitinase 4 (OTUD4) is a potential predictive factor for several cancers such as breast cancer, liver cancer, and lung cancer. However, its function in GBM remains unknown. In this study, we found that high expression of OTUD4 is positively associated with poor prognosis in GBM patients. Moreover, we provided in vitro and in vivo evidence that OTUD4 promotes the proliferation and invasion of GBM cells. Mechanism studies showed that, on the one hand, OTUD4 directly interacts with cyclin-dependent kinase 1 (CDK1) and stabilizes CDK1 by removing its K11, K29, and K33-linked polyubiquitination. On the other hand, OTUD4 binds to fibroblast growth factor receptor 1 (FGFR1) and reduces FGFR1's K6 and K27-linked polyubiquitination, thereby indirectly stabilizing CDK1, ultimately influencing the activation of the downstream MAPK signaling pathway. Collectively, our results revealed that OTUD4 promotes GBM progression via OTUD4-CDK1-MAPK axis, and may be a prospective therapeutic target for GBM treatment.
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Affiliation(s)
- Mingxin Ci
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
| | - Gaichao Zhao
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
| | - Chongyang Li
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
| | - Ruochen Liu
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
| | - Xiaosong Hu
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
| | - Jun Pan
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
| | - Yang Shen
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
| | - Guanghui Zhang
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
| | - Yongsen Li
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
| | - Li Zhang
- Department of Radiology and Nuclear Medicine, The First Hospital of HeBei Medical University, Hebei, 050000, China.
| | - Ping Liang
- Department of Neurosurgery, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, China.
| | - Hongjuan Cui
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China.
- Jinfeng Laboratory, Chongqing, 401329, China.
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143
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Muñoz M, Acevedo A, Ovitt CE, Luitje ME, Maruyama EO, Catalán MA. CFTR expression in human salivary gland acinar cells. Am J Physiol Cell Physiol 2024; 326:C742-C748. [PMID: 38284125 DOI: 10.1152/ajpcell.00549.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 01/08/2024] [Accepted: 01/20/2024] [Indexed: 01/30/2024]
Abstract
The key role of CFTR in secretory epithelia has been extensively documented. Additionally, CFTR plays a significant role in ion absorption in exocrine glands, including salivary and sweat glands. Most of the knowledge about CFTR expression comes from animal models such as the mouse or the rat, but there is limited information about CFTR expression in human tissues. In the present study, we assessed the expression of CFTR in human submandibular and parotid glands. Consistent with findings in rodent salivary glands, our immunolocalization studies show that CFTR is expressed in duct cells. However, CFTR expression in human salivary glands differs from that in rodents, as immunolocalization and single-cell RNA sequencing analysis from a previous study performed in the human parotid gland revealed the presence of CFTR protein and transcripts within a distinct cell cluster. Based on cell marker expression, this cluster corresponds to acinar cells. To obtain functional evidence supporting CFTR expression, we isolated human parotid acinar cells through collagenase digestion. Acinar cells displayed an anion conductance that was activated in response to cAMP-increasing agents and was effectively blocked by CFTRInh172, a known CFTR blocker. This study provides novel evidence of CFTR expression within acinar cells of human salivary glands. This finding challenges the established model positioning CFTR exclusively in duct cells from exocrine glands.NEW & NOTEWORTHY This study addresses the uncertainty about the impact of CFTR on human salivary gland function. We found CFTR transcripts in a subset of duct cells known as ionocytes, as well as in acinar cells. Isolated human parotid acinar cells exhibited Cl- conductance consistent with CFTR activity. This marks the first documented evidence of functional CFTR expression in human salivary gland acinar cells.
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Affiliation(s)
- Manuel Muñoz
- Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile
| | - Alejandro Acevedo
- Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile
| | - Catherine E Ovitt
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, New York, United States
| | - Martha E Luitje
- Department of Otolaryngology, University of Rochester Medical Center, Rochester, New York, United States
| | - Eri O Maruyama
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, New York, United States
| | - Marcelo A Catalán
- Instituto de Fisiología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
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144
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Garcia-Saez AJ. Dying in self-defense: cell death signaling in animals and plants. Cell Death Differ 2024; 31:263-264. [PMID: 37563260 PMCID: PMC10923845 DOI: 10.1038/s41418-023-01206-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 07/11/2023] [Accepted: 08/04/2023] [Indexed: 08/12/2023] Open
Affiliation(s)
- Ana J Garcia-Saez
- Institute of Genetics, CECAD, University of Cologne, Cologne, Germany.
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145
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Sun K, Liao S, Yao X, Yao F. USP30 promotes the progression of breast cancer by stabilising Snail. Cancer Gene Ther 2024; 31:472-483. [PMID: 38146008 PMCID: PMC10940155 DOI: 10.1038/s41417-023-00718-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/27/2023]
Abstract
Breast cancer (BC) is the most prevalent tumour in women worldwide. USP30 is a deubiquitinase that has been previously reported to promote tumour progression and lipid synthesis in hepatocellular carcinoma. However, the role of USP30 in breast cancer remains unclear. Therefore, we investigated its biological action and corresponding mechanisms in vitro and in vivo. In our study, we found that USP30 was highly expressed in breast cancer samples and correlated with a poor patient prognosis. Knockdown of USP30 significantly suppressed the proliferation, invasion and migration abilities of BC cells in vitro and tumour growth in vivo, whereas overexpression of USP30 exhibited the opposite effect. Mechanistically, we verified that USP30 interacts with and stabilises Snail to promote its protein expression through deubiquitination by K48-linked polyubiquitin chains and then accelerates the EMT program. More importantly, USP30 reduced the chemosensitivity of BC cells to paclitaxel (PTX). Collectively, these data demonstrate that USP30 promotes the BC cell EMT program by stabilising Snail and attenuating chemosensitivity to PTX and may be a potential therapeutic target in BC.
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Affiliation(s)
- Kai Sun
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, P. R. China
| | - Shichong Liao
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, P. R. China
| | - Xinrui Yao
- School of Science, University of Sydney, Sydney, Australia
| | - Feng Yao
- Department of Breast and Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, P. R. China.
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146
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Nguyen XTA, Le TNU, Nguyen TQ, Thi Thuy Ha H, Artati A, Leong NCP, Nguyen DT, Lim PY, Susanto AV, Huang Q, Fam L, Leong LN, Bonne I, Lee A, Granadillo JL, Gooch C, Yu D, Huang H, Soong TW, Chang MW, Wenk MR, Adamski J, Cazenave-Gassiot A, Nguyen LN. MFSD7c functions as a transporter of choline at the blood-brain barrier. Cell Res 2024; 34:245-257. [PMID: 38302740 PMCID: PMC10907603 DOI: 10.1038/s41422-023-00923-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 12/26/2023] [Indexed: 02/03/2024] Open
Abstract
Mutations in the orphan transporter MFSD7c (also known as Flvcr2), are linked to Fowler syndrome. Here, we used Mfsd7c knockout (Mfsd7c-/-) mice and cell-based assays to reveal that MFSD7c is a choline transporter at the blood-brain barrier (BBB). We performed comprehensive metabolomics analysis and detected differential changes of metabolites in the brains and livers of Mfsd7c-/-embryos. Particularly, we found that choline-related metabolites were altered in the brains but not in the livers of Mfsd7c-/- embryos. Thus, we hypothesized that MFSD7c regulates the level of choline in the brain. Indeed, expression of human MFSD7c in cells significantly increased choline uptake. Interestingly, we showed that choline uptake by MFSD7c is greatly increased by choline-metabolizing enzymes, leading us to demonstrate that MFSD7c is a facilitative transporter of choline. Furthermore, single-cell patch clamp analysis showed that the import of choline by MFSD7c is electrogenic. Choline transport function of MFSD7c was shown to be conserved in vertebrates, but not in yeasts. We demonstrated that human MFSD7c is a functional ortholog of HNM1, the yeast choline importer. We also showed that several missense mutations identified in patients exhibiting Fowler syndrome had abolished or reduced choline transport activity. Mice lacking Mfsd7c in endothelial cells of the central nervous system suppressed the import of exogenous choline from blood but unexpectedly had increased choline levels in the brain. Stable-isotope tracing study revealed that MFSD7c was required for exporting choline derived from lysophosphatidylcholine in the brain. Collectively, our work identifies MFSD7c as a choline exporter at the BBB and provides a foundation for future work to reveal the disease mechanisms of Fowler syndrome.
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Affiliation(s)
- Xuan Thi Anh Nguyen
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Thanh Nha Uyen Le
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Hudson Institute of Medical Research, Clayton, VIC, Australia
| | - Toan Q Nguyen
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Hoa Thi Thuy Ha
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Anna Artati
- Metabolomics and Proteomics Core, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Nancy C P Leong
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Dat T Nguyen
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Pei Yen Lim
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Singapore Lipidomics Incubator (SLING), Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Adelia Vicanatalita Susanto
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI), National University of Singapore, Singapore, Singapore
- Synthetic Biology Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Qianhui Huang
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Ling Fam
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Lo Ngah Leong
- Electron Microscopy Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Isabelle Bonne
- Electron Microscopy Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Microbiology and Immunology, Immunology Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Life Sciences Institute, Immunology Programme, National University of Singapore, Singapore, Singapore
| | - Angela Lee
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University in St Louis, Saint Louis, MO, USA
| | - Jorge L Granadillo
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University in St Louis, Saint Louis, MO, USA
| | - Catherine Gooch
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University in St Louis, Saint Louis, MO, USA
| | - Dejie Yu
- Electrophysiology Core Facility, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Hua Huang
- Electrophysiology Core Facility, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Diseases Program, National University of Singapore, Singapore, Singapore
| | - Tuck Wah Soong
- Electrophysiology Core Facility, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cardiovascular Diseases Program, National University of Singapore, Singapore, Singapore
| | - Matthew Wook Chang
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI), National University of Singapore, Singapore, Singapore
- Synthetic Biology Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Markus R Wenk
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Singapore Lipidomics Incubator (SLING), Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Jerzy Adamski
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Amaury Cazenave-Gassiot
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Singapore Lipidomics Incubator (SLING), Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Long N Nguyen
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
- Singapore Lipidomics Incubator (SLING), Life Sciences Institute, National University of Singapore, Singapore, Singapore.
- Life Sciences Institute, Immunology Programme, National University of Singapore, Singapore, Singapore.
- Cardiovascular Diseases Program, National University of Singapore, Singapore, Singapore.
- Immunology Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
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147
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Shi L, Wang X, Guo S, Gou H, Shang H, Jiang X, Wei C, Wang J, Li C, Wang L, Zhao Z, Yu W, Yu J. TMEM65 promotes gastric tumorigenesis by targeting YWHAZ to activate PI3K-Akt-mTOR pathway and is a therapeutic target. Oncogene 2024; 43:931-943. [PMID: 38341472 PMCID: PMC10959749 DOI: 10.1038/s41388-024-02959-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 01/07/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
Copy number alterations are crucial for the development of gastric cancer (GC). Here, we identified Transmembrane Protein 65 (TMEM65) amplification by genomic hybridization microarray to profile copy-number variations in GC. TMEM65 mRNA level was significantly up-regulated in GC compared to adjacent normal tissues, and was positively associated with TMEM65 amplification. High TMEM65 expression or DNA copy number predicts poor prognosis (P < 0.05) in GC. Furtherly, GC patients with TMEM65 amplification (n = 129) or overexpression (n = 78) significantly associated with shortened survival. Ectopic expression of TMEM65 significantly promoted cell proliferation, cell cycle progression and cell migration/invasion ability, but inhibited apoptosis (all P < 0.05). Conversely, silencing of TMEM65 in GC cells showed opposite abilities on cell function in vitro and suppressed tumor growth and lung metastasis in vivo (all P < 0.01). Moreover, TMEM65 depletion by VNP-encapsulated TMEM65-siRNA significantly suppressed tumor growth in subcutaneous xenograft model. Mechanistically, TMEM65 exerted oncogenic effects through activating PI3K-Akt-mTOR signaling pathway, as evidenced of increased expression of key regulators (p-Akt, p-GSK-3β, p-mTOR) by Western blot. YWHAZ (Tyrosine 3-Monooxygenase/Tryptophan 5-Monooxygenase) was identified as a direct downstream effector of TMEM65. Direct binding of TMEM65 with YWHAZ in the cytoplasm inhibited ubiquitin-mediated degradation of YWHAZ. Moreover, oncogenic effect of TMEM65 was partly dependent on YWHAZ. In conclusion, TMEM65 promotes gastric tumorigenesis by activating PI3K-Akt-mTOR signaling via cooperating with YWHAZ. TMEM65 overexpression may serve as an independent new biomarker and is a therapeutic target in GC.
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Affiliation(s)
- Lingxue Shi
- Departments of Endoscopy Center, The First Hospital of Hebei Medical University, Shijiazhuang, China
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiaohong Wang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital and Institute, Beijing, China
| | - Shang Guo
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- The First Hospital of Hebei Medical University, Shijiazhuang, China
- Gastrointestinal Disease Centre, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hongyan Gou
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Haiyun Shang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiaojia Jiang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chunxian Wei
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jia Wang
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chao Li
- Departments of Endoscopy Center, The First Hospital of Hebei Medical University, Shijiazhuang, China
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Lihong Wang
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zengren Zhao
- The First Hospital of Hebei Medical University, Shijiazhuang, China.
- Gastrointestinal Disease Centre, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, China.
| | - Weifang Yu
- Departments of Endoscopy Center, The First Hospital of Hebei Medical University, Shijiazhuang, China.
- The First Hospital of Hebei Medical University, Shijiazhuang, China.
| | - Jun Yu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China.
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148
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Cadorna CAE, Pahayo DG, Rey JD. The first mitochondrial genome of Calophyllum soulattri Burm.f. Sci Rep 2024; 14:5112. [PMID: 38429360 PMCID: PMC10907642 DOI: 10.1038/s41598-024-55016-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 02/19/2024] [Indexed: 03/03/2024] Open
Abstract
Calophyllum soulattri Burm.f. is traditionally used to treat skin infections and reduce rheumatic pain, yet genetic and genomic studies are still limited. Here, we present the first complete mitochondrial genome of C. soulattri. It is 378,262 bp long with 43.97% GC content, containing 55 genes (30 protein-coding, 5 rRNA, and 20 tRNA). Repeat analysis of the mitochondrial genome revealed 194 SSRs, mostly mononucleotides, and 266 pairs of dispersed repeats ( ≥ 30 bp) that were predominantly palindromic. There were 23 homologous fragments found between the mitochondrial and plastome genomes. We also predicted 345 C-to-U RNA editing sites from 30 protein-coding genes (PCGs) of the C. soulatrii mitochondrial genome. These RNA editing events created the start codon of nad1 and the stop codon of ccmFc. Most PCGs of the C. soulattri mitochondrial genome underwent negative selection, but atp4 and ccmB experienced positive selection. Phylogenetic analyses showed C. soulattri is a sister taxon of Garcinia mangostana. This study has shed light on C. soulattri's evolution and Malpighiales' phylogeny. As the first complete mitochondrial genome in Calophyllaceae, it can be used as a reference genome for other medicinal plant species within the family for future genetic studies.
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Affiliation(s)
- Charles Anthon E Cadorna
- Plant Molecular Phylogenetics Laboratory, Institute of Biology, College of Science, University of the Philippines, Diliman, 1101, Quezon City, Philippines
| | - Dexter G Pahayo
- Plant Molecular Phylogenetics Laboratory, Institute of Biology, College of Science, University of the Philippines, Diliman, 1101, Quezon City, Philippines
| | - Jessica D Rey
- Plant Molecular Phylogenetics Laboratory, Institute of Biology, College of Science, University of the Philippines, Diliman, 1101, Quezon City, Philippines.
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149
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Jæger KH, Charwat V, Wall S, Healy KE, Tveito A. Do calcium channel blockers applied to cardiomyocytes cause increased channel expression resulting in reduced efficacy? NPJ Syst Biol Appl 2024; 10:22. [PMID: 38429306 PMCID: PMC10907638 DOI: 10.1038/s41540-024-00347-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 02/08/2024] [Indexed: 03/03/2024] Open
Abstract
In the initial hours following the application of the calcium channel blocker (CCB) nifedipine to microtissues consisting of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs), we observe notable variations in the drug's efficacy. Here, we investigate the possibility that these temporal changes in CCB effects are associated with adaptations in the expression of calcium ion channels in cardiomyocyte membranes. To explore this, we employ a recently developed mathematical model that delineates the regulation of calcium ion channel expression by intracellular calcium concentrations. According to the model, a decline in intracellular calcium levels below a certain target level triggers an upregulation of calcium ion channels. Such an upregulation, if instigated by a CCB, would then counteract the drug's inhibitory effect on calcium currents. We assess this hypothesis using time-dependent measurements of hiPSC-CMs dynamics and by refining an existing mathematical model of myocyte action potentials incorporating the dynamic nature of the number of calcium ion channels. The revised model forecasts that the CCB-induced reduction in intracellular calcium concentrations leads to a subsequent increase in calcium ion channel expression, thereby attenuating the drug's overall efficacy. The data and fit models suggest that dynamic changes in cardiac cells in the presence of CCBs may be explainable by induced changes in protein expression, and that this may lead to challenges in understanding calcium based drug effects on the heart unless timings of applications are carefully considered.
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Affiliation(s)
| | | | - Samuel Wall
- Simula Research Laboratory, Oslo, Norway
- Organos Inc., Berkeley, CA, USA
| | - Kevin E Healy
- Department of Bioengineering, University of California, Berkeley, CA, USA
- Department of Material Science and Engineering, University of California, Berkeley, CA, USA
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150
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Chen D, Wu J, Qiu X, Luo S, Huang S, Wei E, Qin M, Huang J, Liu S. SPHK1 potentiates colorectal cancer progression and metastasis via regulating autophagy mediated by TRAF6-induced ULK1 ubiquitination. Cancer Gene Ther 2024; 31:410-419. [PMID: 38135696 PMCID: PMC10940154 DOI: 10.1038/s41417-023-00711-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 11/23/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023]
Abstract
A sphingolipid metabolite regulator, sphingosine kinase 1 (SPHK1), plays a critical role in the development of colorectal cancer (CRC). Studies have demonstrated that invasion and metastasis of CRC are promoted by SPHK1-driven autophagy. However, the exact mechanism of SPHK1 drives autophagy to promote tumor progression remains unclear. Here, immunohistochemical detection showed the expression of SPHK1 and tumor necrosis factor receptor-associated factor-6 (TRAF6) in human CRC tissues was stronger than in adjacent normal tissues, they were both associated with distance metastasis. It was discovered that knockdown of SPHK1 reduced the expression of TRAF6, inhibited autophagy, and inhibited the growth and metastasis of CRC cells in vitro. Moreover, the effects of SPHK1-downregulating were reversed by overexpression of TRAF6 in CRC cells transfected by double-gene. Overexpression of SPHK1 and TRAF6 promoted the expression of autophagy protein LC3 and Vimentin, while downregulated the expression of autophagy protein P62 and E-cadherin. The expression of autophagy-related ubiquitination protein ULK1 and Ubiquitin protein were significantly upregulated in TRAF6-overexpressed CRC cells. In addition, autophagy inhibitor 3-methyladenine (3MA) significantly inhibited the metastasis-promoting effect of SPHK1 and TRAF6, suppressed the expression of LC3 and Vimentin, and promoted the expression of P62 and E-cadherin, in CRC cells. Immunofluorescence staining showed SPHK1 and TRAF6 were co-localized in HT29 CRC cell membrane and cytoplasm. Immunoprecipitation detection showed SPHK1 was efficiently combined with the endogenous TRAF6, and the interaction was also detected reciprocally. Additionally, proteasome inhibitor MG132 treatment upregulated the expression of TRAF6 and the level of Ubiquitin protein, in SPHK1-downregulating CRC cells. These results reveal that SPHK1 potentiates CRC progression and metastasis via regulating autophagy mediated by TRAF6-induced ULK1 ubiquitination. SPHK1-TRAF6-ULK1 signaling axis is critical to the progression of CRC and provides a new strategy for the therapeutic control of CRC.
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Affiliation(s)
- Da Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P. R. China
| | - Jiangni Wu
- Department of Pathology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P. R. China
| | - Xinze Qiu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P. R. China
| | - Shibo Luo
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P. R. China
| | - Shanpei Huang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P. R. China
| | - Erdan Wei
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P. R. China
| | - Mengbin Qin
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P. R. China
| | - Jiean Huang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P. R. China
| | - Shiquan Liu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, P. R. China.
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