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Zhang HJ, Li JY, Wang C, Zhong GQ. Microvesicles with mitochondrial content are increased in patients with sepsis and associated with inflammatory responses. World J Clin Cases 2023; 11:342-356. [PMID: 36686348 PMCID: PMC9850980 DOI: 10.12998/wjcc.v11.i2.342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/03/2022] [Accepted: 12/23/2022] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Endothelial activation plays an important role in sepsis-mediated inflammation, but the triggering factors have not been fully elucidated. Microvesicles carrying mitochondrial content (mitoMVs) have been implicated in several diseases and shown to induce endothelial activation.
AIM To explore whether mitoMVs constitute a subset of MVs isolated from plasma of patients with sepsis and contribute to endothelial activation.
METHODS MVs were isolated from human plasma and characterized by confocal microscopy and flow cytometry. Proinflammatory cytokines, including interleukin (IL)-6, IL-8 and tumour necrosis factor (TNF)-α, and soluble vascular cell adhesion molecule (sVCAM)-1 were detected by ELISA. Human umbilical vein endothelial cells (HUVECs) were stimulated with the circulating MVs to evaluate their effect on endothelial activation.
RESULTS MitoMVs were observed in plasma from patients with sepsis. Compared with those in healthy controls, expression of MVs, mitoMVs, proinflammatory cytokines and sVCAM-1 was increased. The number of mitoMVs was positively associated with TNF-α and sVCAM-1. In vitro, compared with MVs isolated from the plasma of healthy controls, MVs isolated from the plasma of patients with sepsis induced expression of OAS2, RSAD2, and CXCL10 in HUVECs. MitoMVs were taken up by HUVECs, and sonication of MVs significantly reduced the uptake of mitoMVs by HUVECs and expression of the above three type I IFN-dependent genes.
CONCLUSION MitoMVs are increased in the plasma of patients with sepsis, which induces elevated expression of type I IFN-dependent genes. This suggests that circulating mitoMVs activate the type I IFN signalling pathway in endothelial cells and lead to endothelial activation.
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Affiliation(s)
- Hai-Jun Zhang
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530000, Guangxi Zhuang Autonomous Region, China
- Department of Cardiology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421000, Hunan Province, China
| | - Jin-Yi Li
- Department of Cardiology, The Affiliated Hospital of Guilin Medical University, Guilin 541000, Guangxi Zhuang Autonomous Region, China
| | - Chao Wang
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530000, Guangxi Zhuang Autonomous Region, China
| | - Guo-Qiang Zhong
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530000, Guangxi Zhuang Autonomous Region, China
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Barna J, Dimén D, Puska G, Kovács D, Csikós V, Oláh S, Udvari EB, Pál G, Dobolyi Á. Complement component 1q subcomponent binding protein in the brain of the rat. Sci Rep 2019; 9:4597. [PMID: 30872665 PMCID: PMC6418184 DOI: 10.1038/s41598-019-40788-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 02/19/2019] [Indexed: 12/17/2022] Open
Abstract
Complement component 1q subcomponent binding protein (C1qbp) is a multifunctional protein involved in immune response, energy homeostasis of cells as a plasma membrane receptor, and a nuclear, cytoplasmic or mitochondrial protein. Recent reports suggested its neuronal function, too, possibly in axon maintenance, synaptic function, and neuroplasticity. Therefore, we addressed to identify C1qbp in the rat brain using in situ hybridization histochemistry and immunolabelling at light and electron microscopic level. C1qbp has a topographical distribution in the brain established by the same pattern of C1qbp mRNA-expressing and protein-containing neurons with the highest abundance in the cerebral cortex, anterodorsal thalamic nucleus, hypothalamic paraventricular (PVN) and arcuate nuclei, spinal trigeminal nucleus. Double labelling of C1qbp with the neuronal marker NeuN, with the astrocyte marker S100, and the microglia marker Iba1 demonstrated the presence of C1qbp in neurons but not in glial cells in the normal brain, while C1qbp appeared in microglia following their activation induced by focal ischemic lesion. Only restricted neurons expressed C1qbp, for example, in the PVN, magnocellular neurons selectively contained C1qbp. Further double labelling by using the mitochondria marker Idh3a antibody suggested the mitochondrial localization of C1qbp in the brain, confirmed by correlated light and electron microscopy at 3 different brain regions. Post-embedding immunoelectron microscopy also suggested uneven C1qbp content of mitochondria in different brain areas but also heterogeneity within single neurons. These data suggest a specific function of C1qbp in the brain related to mitochondria, such as the regulation of local energy supply in neuronal cells.
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Affiliation(s)
- János Barna
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Diána Dimén
- MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary
| | - Gina Puska
- MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary
| | - Dávid Kovács
- MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary
| | - Vivien Csikós
- MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary
| | - Szilvia Oláh
- MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary
| | - Edina B Udvari
- MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary
| | - Gabriella Pál
- Hungarian Defence Forces Military Hospital, Budapest, Hungary
| | - Árpád Dobolyi
- MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Hungarian Academy of Sciences and Eötvös Loránd University, Budapest, Hungary.
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Sizing lipid droplets from adult and geriatric mouse liver tissue via nanoparticle tracking analysis. Anal Bioanal Chem 2018; 410:3629-3638. [PMID: 29663061 DOI: 10.1007/s00216-018-1016-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 02/23/2018] [Accepted: 03/09/2018] [Indexed: 12/24/2022]
Abstract
The significance of lipid droplets in lipid metabolism, cell signaling, and regulating longevity is increasingly recognized, yet the lipid droplet's unique properties and architecture make it difficult to size and study using conventional methods. To begin to address this issue, we demonstrate the capabilities of nanoparticle tracking analysis (NTA) for sizing of lipid droplets. NTA was found to be adequate to assess lipid droplet stability over time, indicating that lipid droplet preparations are stable for up to 24 h. NTA had the ability to compare the size distributions of lipid droplets from adult and geriatric mouse liver tissue, suggesting an age-related decrease in lipid droplet size. This is the first report on the use of NTA to size intracellular organelles. Graphical Abstract Light scattering reveals the temporal positions of individual lipid droplets, which are recorded with a camera. The two-dimensional diffusion constant of each lipid droplet is extracted from the data set, which is then used to calculate a hydrodynamic radius using the Stokes-Einstein equation.
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He YC, Kong FZ, Fan LY, Wu JY, Liu XP, Li J, Sun Y, Zhang Q, Yang Y, Wu XJ, Xiao H, Cao CX. Preparation of intact mitochondria using free-flow isoelectric focusing with post-pH gradient sample injection for morphological, functional and proteomics studies. Anal Chim Acta 2017; 982:200-208. [DOI: 10.1016/j.aca.2017.06.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 06/10/2017] [Accepted: 06/13/2017] [Indexed: 12/31/2022]
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Muratore KA, Grundhofer HM, Arriaga EA. Capillary Electrophoresis with Laser-Induced Fluorescent Detection of Immunolabeled Individual Autophagy Organelles Isolated from Liver Tissue. Anal Chem 2016; 88:11691-11698. [PMID: 27783895 DOI: 10.1021/acs.analchem.6b03270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Macroautophagy is a cellular degradation process responsible for the clearance of excess intracellular cargo. Existing methods for bulk quantification of autophagy rely on organelle markers that bind to multiple autophagy organelle types, making it difficult to tease apart the subcellular mechanisms implicated in autophagy dysfunction in liver and other pathologies. To address this issue, methods based on individual organelle measurements are needed. Capillary electrophoresis with laser-induced fluorescent detection (CE-LIF) was previously used to count and determine properties of individual autophagy organelles isolated from an LC3-GFP expressing cell line, but has never been used on autophagy organelles originating from a tissue sample. Here, we used DyLight488-labeled anti-LC3 antibodies to label endogenous LC3 present on organelles isolated from murine liver tissue prior to CE-LIF analysis. We evaluated the ability of this method to detect changes in a known model system of altered autophagy, as well as confirmed the specificity and reproducibility of the antibody in the labeling of autophagy organelles from liver tissue. This is both the first demonstration of CE-LIF to analyze individual organelles labeled with fluorophore-conjugated antibodies, and the first application of individual organelle CE-LIF to measure the properties of autophagy organelles isolated from tissue. The observations described here demonstrate that CE-LIF of immunolabeled autophagy organelles is a powerful technique useful to investigate the complexity of autophagy in any tissue sample of interest.
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Affiliation(s)
- Katherine A Muratore
- Department of Biochemistry, Molecular Biology, and Biophysics and ‡Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Heather M Grundhofer
- Department of Biochemistry, Molecular Biology, and Biophysics and ‡Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Edgar A Arriaga
- Department of Biochemistry, Molecular Biology, and Biophysics and ‡Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
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Popkov VA, Plotnikov EY, Lyamzaev KG, Silachev DN, Zorova LD, Pevzner IB, Jankauskas SS, Zorov SD, Babenko VA, Zorov DB. Mitodiversity. BIOCHEMISTRY (MOSCOW) 2016; 80:532-41. [PMID: 26071770 DOI: 10.1134/s000629791505003x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Here, in addition to the previously coined term "mitobiota", we introduce the term "mitodiversity" for various phenotypic and genetic heterogeneities of mitochondria within the same cell or organ. Based on data on the mitochondrial transmembrane potential determined both in situ and in vitro under normal conditions and after organ ischemia/reperfusion, such heterogeneity is most evident under pathologic conditions. Herein, a part of the mitochondrial population with transmembrane potential typical of the normal state is sustained even under a pathological condition that, perhaps, underlies the development of ways of reversing pathology back to the normal state. The membrane potentials of isolated mitochondria were shown to directly correlate with the magnitude of side-scattered light depicting internal structure of mitochondria. We analyzed possible interpretations of data on mitochondrial membrane potential obtained using fluorescent probes. We suggest a possible mechanism underlying retention of fluorescent probes inside the cells and mitochondria.
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Affiliation(s)
- V A Popkov
- Lomonosov Moscow State University, Faculty of Bioengineering and Bioinformatics, Moscow, 119991, Russia
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Thimiri Govinda Raj DB, Khan NA. Designer nanoparticle: nanobiotechnology tool for cell biology. NANO CONVERGENCE 2016; 3:22. [PMID: 28191432 PMCID: PMC5271163 DOI: 10.1186/s40580-016-0082-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 08/29/2016] [Indexed: 05/17/2023]
Abstract
This article discusses the use of nanotechnology for subcellular compartment isolation and its application towards subcellular omics. This technology review significantly contributes to our understanding on use of nanotechnology for subcellular systems biology. Here we elaborate nanobiotechnology approach of using superparamagnetic nanoparticles (SPMNPs) optimized with different surface coatings for subcellular organelle isolation. Using pulse-chase approach, we review that SPMNPs interacted differently with the cell depending on its surface functionalization. The article focuses on the use of functionalized-SPMNPs as a nanobiotechnology tool to isolate high quality (both purity and yield) plasma membranes and endosomes or lysosomes. Such nanobiotechnology tool can be applied in generating subcellular compartment inventories. As a future perspective, this strategy could be applied in areas such as immunology, cancer and stem cell research.
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Affiliation(s)
- Deepak B. Thimiri Govinda Raj
- European Molecular Biology Laboratory (EMBL), Grenoble Outstation and Unit of Virus Host-Cell Interactions (UVHCI), UJF-EMBL-CNRS, UMR 5233 Grenoble, France
- Envirotransgene Bio-solutions Global, Chennai, India
- Biotechnology Centre for Oslo, Centre for Molecular Medicine Norway (NCMM), P.O. Box 1137, Blindern, 0318 Oslo, Norway
| | - Niamat Ali Khan
- Laboratory of Lipid Metabolism and Cancer, O&N I, Herestraat 49, Box 902, 3000 Louvain, Belgium
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Quantification of protein copy number in single mitochondria: The Bcl-2 family proteins. Biosens Bioelectron 2015; 74:476-82. [DOI: 10.1016/j.bios.2015.06.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 06/23/2015] [Accepted: 06/25/2015] [Indexed: 01/06/2023]
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