1
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Marino Y, Inferrera F, D'Amico R, Impellizzeri D, Cordaro M, Siracusa R, Gugliandolo E, Fusco R, Cuzzocrea S, Di Paola R. Role of mitochondrial dysfunction and biogenesis in fibromyalgia syndrome: Molecular mechanism in central nervous system. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167301. [PMID: 38878832 DOI: 10.1016/j.bbadis.2024.167301] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/22/2024] [Accepted: 06/07/2024] [Indexed: 08/18/2024]
Abstract
A critical role for mitochondrial dysfunction has been shown in the pathogenesis of fibromyalgia. It is a chronic pain syndrome characterized by neuroinflammation and impaired oxidative balance in the central nervous system. Boswellia serrata (BS), a natural polyphenol, is a well-known able to influence the mitochondrial metabolism. The objective of this study was to evaluate the mitochondrial dysfunction and biogenesis in fibromyalgia and their modulation by BS. To induce the model reserpine (1 mg/Kg) was subcutaneously administered for three consecutive days and BS (100 mg/Kg) was given orally for twenty-one days. BS reduced pain like behaviors in reserpine-injected rats and the astrocytes activation in the dorsal horn of the spinal cord and prefrontal cortex that are recognized as key regions associated with the neuropathic pain. Vulnerability to neuroinflammation and impaired neuronal plasticity have been described as consequences of mitochondrial dysfunction. BS administration increased PGC-1α expression in the nucleus of spinal cord and brain tissues, promoting the expression of regulatory genes for mitochondrial biogenesis (NRF-1, Tfam and UCP2) and cellular antioxidant defence mechanisms (catalase, SOD2 and Prdx 3). According with these data BS reduced lipid peroxidation and the GSSG/GSH ratio and increased SOD activity in the same tissues. Our results also showed that BS administration mitigates cytochrome-c leakage by promoting mitochondrial function and supported the movement of PGC-1α protein into the nucleus restoring the quality control of mitochondria. Additionally, BS reduced Drp1 and Fis1, preventing both mitochondrial fission and cell death, and increased the expression of Mfn2 protein, facilitating mitochondrial fusion. Overall, our results showed important mitochondrial dysfunction in central nervous system in fibromyalgia syndrome and the role of BS in restoring mitochondrial dynamics.
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Affiliation(s)
- Ylenia Marino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy.
| | - Francesca Inferrera
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy.
| | - Ramona D'Amico
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy.
| | - Daniela Impellizzeri
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy.
| | - Marika Cordaro
- Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, 98125 Messina, Italy.
| | - Rosalba Siracusa
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy.
| | - Enrico Gugliandolo
- Department of Veterinary Science, University of Messina, 98168 Messina, Italy.
| | - Roberta Fusco
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy.
| | - Salvatore Cuzzocrea
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy.
| | - Rosanna Di Paola
- Department of Veterinary Science, University of Messina, 98168 Messina, Italy.
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2
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Tang Z, Chen Z, Guo M, Peng Y, Xiao Y, Guan Z, Ni R, Qi X. NRF2 Deficiency Promotes Ferroptosis of Astrocytes Mediated by Oxidative Stress in Alzheimer's Disease. Mol Neurobiol 2024; 61:7517-7533. [PMID: 38401046 DOI: 10.1007/s12035-024-04023-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 02/06/2024] [Indexed: 02/26/2024]
Abstract
Oxidative stress is involved in the pathogenesis of Alzheimer's disease (AD), which is linked to reactive oxygen species (ROS), lipid peroxidation, and neurotoxicity. Emerging evidence suggests a role of nuclear factor (erythroid-derived 2)-like 2 (Nrf2), a major source of antioxidant response elements in AD. The molecular mechanism of oxidative stress and ferroptosis in astrocytes in AD is not yet fully understood. Here, we aimed to investigate the mechanism by which Nrf2 regulates the ferroptosis of astrocytes in AD. We found decreased expression of Nrf2 and upregulated expression of the ROS marker NADPH oxidase 4 (NOX4) in the frontal cortex from patients with AD and in the cortex of 3×Tg mice compared to wildtype mice. We demonstrated that Nrf2 deficiency led to ferroptosis-dependent oxidative stress-induced ROS with downregulated heme oxygenase-1 and glutathione peroxidase 4 and upregulated cystine glutamate expression. Moreover, Nrf2 deficiency increased lipid peroxidation, DNA oxidation, and mitochondrial fragmentation in mouse astrocytes (mAS, M1800-57). In conclusion, these results suggest that Nrf2 deficiency promotes ferroptosis of astrocytes involving oxidative stress in AD.
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Affiliation(s)
- Zhi Tang
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, 550004, China
| | - Zhuyi Chen
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, 550004, China
| | - Min Guo
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, 550004, China
| | - Yaqian Peng
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, 550004, China
| | - Yan Xiao
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, 550004, China
| | - Zhizhong Guan
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, 550004, China
- Collaborative Innovation Center for Prevention and Control of Endemic and Ethnic Regional Diseases Co-Constructed By the Province and Ministry, Guizhou, 550004, China
| | - Ruiqing Ni
- Institute for Regenerative Medicine, University of Zurich, Zurich, Switzerland.
- Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland.
| | - Xiaolan Qi
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, 550004, China.
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3
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Sánchez-Ramírez E, Ung TPL, Stringari C, Aguilar-Arnal L. Emerging Functional Connections Between Metabolism and Epigenetic Remodeling in Neural Differentiation. Mol Neurobiol 2024; 61:6688-6707. [PMID: 38340204 PMCID: PMC11339152 DOI: 10.1007/s12035-024-04006-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
Stem cells possess extraordinary capacities for self-renewal and differentiation, making them highly valuable in regenerative medicine. Among these, neural stem cells (NSCs) play a fundamental role in neural development and repair processes. NSC characteristics and fate are intricately regulated by the microenvironment and intracellular signaling. Interestingly, metabolism plays a pivotal role in orchestrating the epigenome dynamics during neural differentiation, facilitating the transition from undifferentiated NSC to specialized neuronal and glial cell types. This intricate interplay between metabolism and the epigenome is essential for precisely regulating gene expression patterns and ensuring proper neural development. This review highlights the mechanisms behind metabolic regulation of NSC fate and their connections with epigenetic regulation to shape transcriptional programs of stemness and neural differentiation. A comprehensive understanding of these molecular gears appears fundamental for translational applications in regenerative medicine and personalized therapies for neurological conditions.
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Affiliation(s)
- Edgar Sánchez-Ramírez
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Thi Phuong Lien Ung
- Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, Institut Polytechnique de Paris, Palaiseau, France
| | - Chiara Stringari
- Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, Institut Polytechnique de Paris, Palaiseau, France
| | - Lorena Aguilar-Arnal
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.
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4
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An J, Park S, Jain N, Kim Y, Nimse SB, Churchill DG. Novel mycophenolic acid precursor-based fluorescent probe for intracellular H 2O 2 detection in living cells and Daphnia magna and Zebrafish model systems. Analyst 2024; 149:4477-4486. [PMID: 39041806 DOI: 10.1039/d4an00742e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Innovative for the scientific community and attracting attention in the extensive biomedical field are novel compact organic chemosensing systems built upon unique core molecular frameworks. These systems may demonstrate customized responses and may be adaptable to analytes, showing promise for potential in vivo applications. Our recent investigation focuses on a precursor of Mycophenolic acid, resulting in the development of LBM (LOD = 13 nM) - a specialized probe selective for H2O2. This paper details the synthesis, characterization, and thorough biological assessments of LBM. Notably, we conducted experiments involving living cells, daphnia, and zebrafish models, utilizing microscopy techniques to determine probe nontoxicity and discern distinct patterns of probe localization. Localization involved the distribution of the probe in the Zebrafish model within the gut, esophagus, and muscles of the antennae.
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Affiliation(s)
- Jongkeol An
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Sujeong Park
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon, 24252, Republic of Korea
| | - Neha Jain
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Youngsam Kim
- Environmental Safety Group, KIST Europe Forschungsgesellschaft mbH, 66123 Saarbrücken, Germany
- Division of Energy and Environment Technology, University of Science and Technology, Daejeon 34141, Republic of Korea
| | - Satish Balasaheb Nimse
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon, 24252, Republic of Korea
| | - David G Churchill
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- KAIST Institute for Health Science and Technology (KIHST) (Therapeutic Bioengineering Section), Daejeon 34141, Republic of Korea
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5
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Li X, Jiang H, Guo D, Huang W, Ren H, Zhang Q. Toxic Features and Metabolomic Intervention of Glabrene, an Impurity Found in the Pharmaceutical Product of Glabridin. Int J Mol Sci 2024; 25:8985. [PMID: 39201673 PMCID: PMC11354706 DOI: 10.3390/ijms25168985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/30/2024] [Accepted: 08/16/2024] [Indexed: 09/03/2024] Open
Abstract
Glabridin is a widely used product in the cosmetics and pharmaceutical industry, which is generally isolated and purified from Licorice (Glycyrrhiza glabra) extract in industrial production. It has wide clinical applications, but significant toxicity has also been reported. The purity of glabridin raw material is generally between 90% and 98%. We have identified a toxic impurity, glabrene, in the industrial product glabridin. Our investigation using an AB wild-type zebrafish toxicity test showed that glabrene has a significant lethal effect with an LC10 of 2.8 μM. Glabrene induced obvious malformation and disrupted cartilage development in zebrafish larvae. Furthermore, the compound significantly reduced larval mobility and caused damage to brain neural tissues. Metabolic pathway analysis and neurotransmitter quantification via ELISA indicated abnormal activation of the phenylalanine metabolic pathway, resulting in elevated dopamine and acetylcholine levels in vivo. These findings provide insights into the potential risks of glabrene contamination and offer a new reference point for enhancing safety measures and quality controls in licorice-derived products.
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Affiliation(s)
- Xue Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China; (X.L.); (H.J.); (D.G.); (W.H.)
| | - Haixin Jiang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China; (X.L.); (H.J.); (D.G.); (W.H.)
| | - Dongxue Guo
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China; (X.L.); (H.J.); (D.G.); (W.H.)
| | - Wen Huang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China; (X.L.); (H.J.); (D.G.); (W.H.)
| | - Houpu Ren
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China;
| | - Qiang Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China; (X.L.); (H.J.); (D.G.); (W.H.)
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6
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Rezaei Adariani S, Agne D, Koska S, Burhop A, Seitz C, Warmers J, Janning P, Metz M, Pahl A, Sievers S, Waldmann H, Ziegler S. Detection of a Mitochondrial Fragmentation and Integrated Stress Response Using the Cell Painting Assay. J Med Chem 2024; 67:13252-13270. [PMID: 39018123 PMCID: PMC11320566 DOI: 10.1021/acs.jmedchem.4c01183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/04/2024] [Accepted: 07/09/2024] [Indexed: 07/19/2024]
Abstract
Mitochondria are cellular powerhouses and are crucial for cell function. However, they are vulnerable to internal and external perturbagens that may impair mitochondrial function and eventually lead to cell death. In particular, small molecules may impact mitochondrial function, and therefore, their influence on mitochondrial homeostasis is at best assessed early on in the characterization of biologically active small molecules and drug discovery. We demonstrate that unbiased morphological profiling by means of the cell painting assay (CPA) can detect mitochondrial stress coupled with the induction of an integrated stress response. This activity is common for compounds addressing different targets, is not shared by direct inhibitors of the electron transport chain, and enables prediction of mitochondrial stress induction for small molecules that are profiled using CPA.
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Affiliation(s)
- Soheila Rezaei Adariani
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
- Faculty
of Chemistry and Chemical Biology, Technical
University Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Daya Agne
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
| | - Sandra Koska
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
| | - Annina Burhop
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
| | - Carina Seitz
- Compound
Management and Screening Center, Max Planck
Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
| | - Jens Warmers
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
- Faculty
of Chemistry and Chemical Biology, Technical
University Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Petra Janning
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
| | - Malte Metz
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
| | - Axel Pahl
- Compound
Management and Screening Center, Max Planck
Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
| | - Sonja Sievers
- Compound
Management and Screening Center, Max Planck
Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
| | - Herbert Waldmann
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
- Faculty
of Chemistry and Chemical Biology, Technical
University Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Slava Ziegler
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
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7
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Inferrera F, Marino Y, D'Amico R, Impellizzeri D, Cordaro M, Siracusa R, Gugliandolo E, Fusco R, Cuzzocrea S, Di Paola R. Impaired mitochondrial quality control in fibromyalgia: Mechanisms involved in skeletal muscle alteration. Arch Biochem Biophys 2024; 758:110083. [PMID: 38969196 DOI: 10.1016/j.abb.2024.110083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/04/2024] [Accepted: 07/02/2024] [Indexed: 07/07/2024]
Abstract
Fibromyalgia (FMS) is a persistent syndrome marked by widespread musculoskeletal pain and behavioural symptoms. Given the hypothesis linking FMS aetiology to mitochondrial dysfunction and oxidative stress, we examined the biochemical correlation among these factors by studying specific proteins associated with mitochondrial homeostasis in muscle. Additionally, this study investigated the role of Boswellia serrata gum resin extract (BS), known for its various functions, including the potent induction of antioxidant enzymes, in determining protective or reparative mechanisms in the muscle cells. Sprague-Dawley rats were injected with reserpine to induce FMS. These animals exhibited moderate changes in hind limb skeletal muscles, experiencing mobility difficulties. Additionally, there were noteworthy morphological and ultrastructural alterations, along with the expression of myogenin, mitochondrial enzymes and oxidative stress markers in the gastrocnemius muscle. Interestingly, BS demonstrated a reduction in spontaneous motor activity difficulties. Moreover, BS showed a positive impact on musculoskeletal morphostructural aspects, as well as a decrease in oxidative stress and mitochondrial alterations. In particular, BS restored the mRNA expression of citrate synthase and cytochrome-c oxidase subunit II and the activity of electron transfer chain complexes. BS also influenced mitochondrial biogenesis, upregulating PGC-1α expression and the related transcription factors (Nrf1, Tfam, Nrf2, FOXO3a, SIRT3, GCLC, NQO1, SOD2 and GPx4), oxidative stress (lipid peroxidation, GSH levels and GSH-Px activity) and mitochondrial dynamics and function (Mnf2 expression and CoQ10 levels). Overall, this study underlined the key role of the mitochondrial alteration in FMS and that BS had a very high antioxidant effect in these organelles and also in the cells.
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Affiliation(s)
- Francesca Inferrera
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy.
| | - Ylenia Marino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy.
| | - Ramona D'Amico
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy.
| | - Daniela Impellizzeri
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy.
| | - Marika Cordaro
- Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, 98125, Messina, Italy.
| | - Rosalba Siracusa
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy.
| | - Enrico Gugliandolo
- Department of Veterinary Science, University of Messina, 98168, Messina, Italy.
| | - Roberta Fusco
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy.
| | - Salvatore Cuzzocrea
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy.
| | - Rosanna Di Paola
- Department of Veterinary Science, University of Messina, 98168, Messina, Italy.
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8
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Wang L, Tang Z, Li B, Peng Y, Yang X, Xiao Y, Ni R, Qi XL. Myricetin ameliorates cognitive impairment in 3×Tg Alzheimer's disease mice by regulating oxidative stress and tau hyperphosphorylation. Biomed Pharmacother 2024; 177:116963. [PMID: 38889642 DOI: 10.1016/j.biopha.2024.116963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 06/13/2024] [Accepted: 06/15/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Alzheimer's disease is characterized by abnormal β-amyloid (Aβ) plaque accumulation, tau hyperphosphorylation, reactive oxidative stress, mitochondrial dysfunction and synaptic loss. Myricetin, a dietary flavonoid, has been shown to exert neuroprotective effects in vitro and in vivo. Here, we aimed to elucidate the mechanism and pathways involved in the protective effect of myricetin. METHODS The effect of myricetin was assessed on Aβ42 oligomer-treated neuronal SH-SY5Y cells and in 3×Tg mice. Behavioral tests were performed to assess the cognitive effects of myricetin (14 days, ip) in 3×Tg mice. The levels of beta-amyloid precursor protein (APP), synaptic and mitochondrial proteins, glycogen synthase kinase3β (GSK3β) and extracellular regulated kinase (ERK) 2 were assessed via Western blotting. Flow cytometry assays, immunofluorescence staining, and transmission electron microscopy were used to assess mitochondrial dysfunction and reactive oxidative stress. RESULTS We found that, compared with control treatment, myricetin treatment improved spatial cognition and learning and memory in 3×Tg mice. Myricetin ameliorated tau phosphorylation and the reduction in pre- and postsynaptic proteins in Aβ42 oligomer-treated neuronal SH-SY5Y cells and in 3×Tg mice. In addition, myricetin reduced reactive oxygen species generation, lipid peroxidation, and DNA oxidation, and rescued mitochondrial dysfunction via the associated GSK3β and ERK 2 signalling pathways. CONCLUSIONS This study provides new insight into the neuroprotective mechanism of myricetin in vitro in cell culture and in vivo in a mouse model of Alzheimer's disease.
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Affiliation(s)
- Li Wang
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Key Laboratory of Molecular Biology of Guizhou Medical University, Guiyang, China
| | - Zhi Tang
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Key Laboratory of Molecular Biology of Guizhou Medical University, Guiyang, China
| | - Bo Li
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Key Laboratory of Molecular Biology of Guizhou Medical University, Guiyang, China
| | - Yaqian Peng
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Key Laboratory of Molecular Biology of Guizhou Medical University, Guiyang, China
| | - Xi Yang
- Guiyang Healthcare Vocational University, Guizhou ERC for Medical Resources & Healthcare Products (Guizhou Engineering Research Center for Medical Resources and Healthcare Products), Guiyang, Guizhou, China
| | - Yan Xiao
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Key Laboratory of Molecular Biology of Guizhou Medical University, Guiyang, China
| | - Ruiqing Ni
- Institute for Regenerative Medicine, University of Zurich, Zurich, Switzerland; Institute for Biomedical Engineering, ETH Zurich & University of Zurich, Zurich, Switzerland.
| | - Xiao-Lan Qi
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Key Laboratory of Molecular Biology of Guizhou Medical University, Guiyang, China; Collaborative Innovation Center for Prevention and Control of Endemic and Ethnic Regional Diseases Constructed by the Province and Ministry, Guiyang, China.
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9
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Aggarwal S, Singh V, Chakraborty A, Cha S, Dimitriou A, de Crescenzo C, Izikson O, Yu L, Plebani R, Tzika AA, Rahme LG. Skeletal muscle mitochondrial dysfunction mediated by Pseudomonas aeruginosa quorum-sensing transcription factor MvfR: reversing effects with anti-MvfR and mitochondrial-targeted compounds. mBio 2024; 15:e0129224. [PMID: 38860823 PMCID: PMC11253625 DOI: 10.1128/mbio.01292-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 05/14/2024] [Indexed: 06/12/2024] Open
Abstract
Sepsis and chronic infections with Pseudomonas aeruginosa, a leading "ESKAPE" bacterial pathogen, are associated with increased morbidity and mortality and skeletal muscle atrophy. The actions of this pathogen on skeletal muscle remain poorly understood. In skeletal muscle, mitochondria serve as a crucial energy source, which may be perturbed by infection. Here, using the well-established backburn and infection model of murine P. aeruginosa infection, we deciphered the systemic impact of the quorum-sensing transcription factor MvfR (multiple virulence factor regulator) by interrogating, 5 days post-infection, its effect on mitochondrial-related functions in the gastrocnemius skeletal muscle and the outcome of the pharmacological inhibition of MvfR function and that of the mitochondrial-targeted peptide, Szeto-Schiller 31 (SS-31). Our findings show that the MvfR perturbs adenosine triphosphate generation, oxidative phosphorylation, and antioxidant response, elevates the production of reactive oxygen species, and promotes oxidative damage of mitochondrial DNA in the gastrocnemius muscle of infected mice. These impairments in mitochondrial-related functions were corroborated by the alteration of key mitochondrial proteins involved in electron transport, mitochondrial biogenesis, dynamics and quality control, and mitochondrial uncoupling. Pharmacological inhibition of MvfR using the potent anti-MvfR lead, D88, we developed, or the mitochondrial-targeted peptide SS-31 rescued the MvfR-mediated alterations observed in mice infected with the wild-type strain PA14. Our study provides insights into the actions of MvfR in orchestrating mitochondrial dysfunction in the skeletal murine muscle, and it presents novel therapeutic approaches for optimizing clinical outcomes in affected patients. IMPORTANCE Skeletal muscle, pivotal for many functions in the human body, including breathing and protecting internal organs, contains abundant mitochondria essential for maintaining cellular homeostasis during infection. The effect of Pseudomonas aeruginosa (PA) infections on skeletal muscle remains poorly understood. Our study delves into the role of a central quorum-sensing transcription factor, multiple virulence factor regulator (MvfR), that controls the expression of multiple acute and chronic virulence functions that contribute to the pathogenicity of PA. The significance of our study lies in the role of MvfR in the metabolic perturbances linked to mitochondrial functions in skeletal muscle and the effectiveness of the novel MvfR inhibitor and the mitochondrial-targeted peptide SS-31 in alleviating the mitochondrial disturbances caused by PA in skeletal muscle. Inhibiting MvfR or interfering with its effects can be a potential therapeutic strategy to curb PA virulence.
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Affiliation(s)
- Shifu Aggarwal
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA
| | - Vijay Singh
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Arijit Chakraborty
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA
- Shriners Hospitals for Children Boston, Boston, Massachusetts, USA
| | - Sujin Cha
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Alexandra Dimitriou
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Claire de Crescenzo
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Olivia Izikson
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Lucy Yu
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Roberto Plebani
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - A. Aria Tzika
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Shriners Hospitals for Children Boston, Boston, Massachusetts, USA
| | - Laurence G. Rahme
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA
- Shriners Hospitals for Children Boston, Boston, Massachusetts, USA
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10
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Traa A, Keil A, AlOkda A, Jacob-Tomas S, Tamez González AA, Zhu S, Rudich Z, Van Raamsdonk JM. Overexpression of mitochondrial fission or mitochondrial fusion genes enhances resilience and extends longevity. Aging Cell 2024:e14262. [PMID: 38953684 DOI: 10.1111/acel.14262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 06/05/2024] [Accepted: 06/17/2024] [Indexed: 07/04/2024] Open
Abstract
The dynamicity of the mitochondrial network is crucial for meeting the ever-changing metabolic and energy needs of the cell. Mitochondrial fission promotes the degradation and distribution of mitochondria, while mitochondrial fusion maintains mitochondrial function through the complementation of mitochondrial components. Previously, we have reported that mitochondrial networks are tubular, interconnected, and well-organized in young, healthy C. elegans, but become fragmented and disorganized with advancing age and in models of age-associated neurodegenerative disease. In this work, we examine the effects of increasing mitochondrial fission or mitochondrial fusion capacity by ubiquitously overexpressing the mitochondrial fission gene drp-1 or the mitochondrial fusion genes fzo-1 and eat-3, individually or in combination. We then measured mitochondrial function, mitochondrial network morphology, physiologic rates, stress resistance, and lifespan. Surprisingly, we found that overexpression of either mitochondrial fission or fusion machinery both resulted in an increase in mitochondrial fragmentation. Similarly, both mitochondrial fission and mitochondrial fusion overexpression strains have extended lifespans and increased stress resistance, which in the case of the mitochondrial fusion overexpression strains appears to be at least partially due to the upregulation of multiple pathways of cellular resilience in these strains. Overall, our work demonstrates that increasing the expression of mitochondrial fission or fusion genes extends lifespan and improves biological resilience without promoting the maintenance of a youthful mitochondrial network morphology. This work highlights the importance of the mitochondria for both resilience and longevity.
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Affiliation(s)
- Annika Traa
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Metabolic Disorders and Complications Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Allison Keil
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Metabolic Disorders and Complications Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Abdelrahman AlOkda
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Metabolic Disorders and Complications Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Suleima Jacob-Tomas
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Metabolic Disorders and Complications Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Aura A Tamez González
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Metabolic Disorders and Complications Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Shusen Zhu
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Metabolic Disorders and Complications Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Zenith Rudich
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Metabolic Disorders and Complications Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Jeremy M Van Raamsdonk
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
- Metabolic Disorders and Complications Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Division of Experimental Medicine, Department of Medicine, McGill University, Montreal, Quebec, Canada
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11
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Wu K, Shieh JS, Qin L, Guo JJ. Mitochondrial mechanisms in the pathogenesis of chronic inflammatory musculoskeletal disorders. Cell Biosci 2024; 14:76. [PMID: 38849951 PMCID: PMC11162051 DOI: 10.1186/s13578-024-01259-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 05/29/2024] [Indexed: 06/09/2024] Open
Abstract
Chronic inflammatory musculoskeletal disorders characterized by prolonged muscle inflammation, resulting in enduring pain and diminished functionality, pose significant challenges for the patients. Emerging scientific evidence points to mitochondrial malfunction as a pivotal factor contributing to these ailments. Mitochondria play a critical role in powering skeletal muscle activity, but in the context of persistent inflammation, disruptions in their quantity, configuration, and performance have been well-documented. Various disturbances, encompassing alterations in mitochondrial dynamics (such as fission and fusion), calcium regulation, oxidative stress, biogenesis, and the process of mitophagy, are believed to play a central role in the progression of these disorders. Additionally, unfolded protein responses and the accumulation of fatty acids within muscle cells may adversely affect the internal milieu, impairing the equilibrium of mitochondrial functioning. The structural discrepancies between different mitochondrial subsets namely, intramyofibrillar and subsarcolemmal mitochondria likely impact their metabolic capabilities and susceptibility to inflammatory influences. The release of signals from damaged mitochondria is known to incite inflammatory responses. Intriguingly, migrasomes and extracellular vesicles serve as vehicles for intercellular transfer of mitochondria, aiding in the removal of impaired mitochondria and regulation of inflammation. Viral infections have been implicated in inducing stress on mitochondria. Prolonged dysfunction of these vital organelles sustains oxidative harm, metabolic irregularities, and heightened cytokine release, impeding the body's ability to repair tissues. This review provides a comprehensive analysis of advancements in understanding changes in the intracellular environment, mitochondrial architecture and distribution, biogenesis, dynamics, autophagy, oxidative stress, cytokines associated with mitochondria, vesicular structures, and associated membranes in the context of chronic inflammatory musculoskeletal disorders. Strategies targeting key elements regulating mitochondrial quality exhibit promise in the restoration of mitochondrial function, alleviation of inflammation, and enhancement of overall outcomes.
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Affiliation(s)
- Kailun Wu
- Department of Orthopedics, The Fourth Affiliated Hospital of Soochow University/Suzhou Dushu Lake Hospital, Suzhou, Jiangsu, People's Republic of China
- Department of Orthopedics and Sports Medicine, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, People's Republic of China
| | - Ju-Sheng Shieh
- Department of Periodontology, School of Dentistry, Tri-Service General Hospital, National Defense Medical Center, Taipei City, 11490, Taiwan
| | - Ling Qin
- Musculoskeletal Research Laboratory of the Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Jiong Jiong Guo
- Department of Orthopedics and Sports Medicine, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, People's Republic of China.
- MOE China-Europe Sports Medicine Belt and Road Joint Laboratory, Soochow University, Suzhou, Jiangsu, People's Republic of China.
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12
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Aggarwal S, Singh V, Chakraborty A, Cha S, Dimitriou A, de Crescenzo C, Izikson O, Yu L, Plebani R, Tzika AA, Rahme LG. Skeletal Muscle Mitochondrial Dysfunction Mediated by Pseudomonas aeruginosa Quorum Sensing Transcription Factor MvfR: Reversing Effects with Anti-MvfR and Mitochondrial-Targeted Compounds. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.03.592480. [PMID: 38746243 PMCID: PMC11092755 DOI: 10.1101/2024.05.03.592480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Sepsis and chronic infections with Pseudomonas aeruginosa, a leading "ESKAPE" bacterial pathogen, are associated with increased morbidity and mortality and skeletal muscle atrophy. The actions of this pathogen on skeletal muscle remain poorly understood. In skeletal muscle, mitochondria serve as a crucial energy source, which may be perturbed by infection. Here, using the well-established backburn and infection model of murine P. aeruginosa infection, we deciphered the systemic impact of the quorum sensing (QS) transcription factor MvfR by interrogating five days post-infection its effect on mitochondrial-related functions in the gastrocnemius skeletal muscle and the outcome of the pharmacological inhibition of MvfR function and that of the mitochondrial-targeted peptide, Szeto-Schiller 31 (SS-31). Our findings show that the MvfR perturbs ATP generation, oxidative phosphorylation (OXPHOS), and antioxidant response, elevates the production of reactive oxygen species, and promotes oxidative damage of mitochondrial DNA in the gastrocnemius muscle of infected mice. These impairments in mitochondrial-related functions were corroborated by the alteration of key mitochondrial proteins involved in electron transport, mitochondrial biogenesis, dynamics and quality control, and mitochondrial uncoupling. Pharmacological inhibition of MvfR using the potent anti-MvfR lead, D88, we developed, or the mitochondrial-targeted peptide SS-31 rescued the MvfR- mediated alterations observed in mice infected with the wild-type strain PA14. Our study provides insights into the actions of MvfR in orchestrating mitochondrial dysfunction in the skeletal murine muscle, and it presents novel therapeutic approaches for optimizing clinical outcomes in affected patients.
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13
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Charrasse S, Racine V, Saint-Omer C, Poquillon T, Lionnard L, Ledru M, Gonindard C, Delaunois S, Kissa K, Frye RE, Pastore M, Reynes C, Frechet M, Chajra H, Aouacheria A. Quantitative imaging and semiotic phenotyping of mitochondrial network morphology in live human cells. PLoS One 2024; 19:e0301372. [PMID: 38547143 PMCID: PMC10977735 DOI: 10.1371/journal.pone.0301372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 03/11/2024] [Indexed: 04/02/2024] Open
Abstract
The importance of mitochondria in tissue homeostasis, stress responses and human diseases, combined to their ability to transition between various structural and functional states, makes them excellent organelles for monitoring cell health. There is therefore a need for technologies to accurately analyze and quantify changes in mitochondrial organization in a variety of cells and cellular contexts. Here we present an innovative computerized method that enables accurate, multiscale, fast and cost-effective analysis of mitochondrial shape and network architecture from confocal fluorescence images by providing more than thirty features. In order to facilitate interpretation of the quantitative results, we introduced two innovations: the use of Kiviat-graphs (herein named MitoSpider plots) to present highly multidimensional data and visualization of the various mito-cellular configurations in the form of morphospace diagrams (called MitoSigils). We tested our fully automated image analysis tool on rich datasets gathered from live normal human skin cells cultured under basal conditions or exposed to specific stress including UVB irradiation and pesticide exposure. We demonstrated the ability of our proprietary software (named MitoTouch) to sensitively discriminate between control and stressed dermal fibroblasts, and between normal fibroblasts and other cell types (including cancer tissue-derived fibroblasts and primary keratinocytes), showing that our automated analysis captures subtle differences in morphology. Based on this novel algorithm, we report the identification of a protective natural ingredient that mitigates the deleterious impact of hydrogen peroxide (H2O2) on mitochondrial organization. Hence we conceived a novel wet-plus-dry pipeline combining cell cultures, quantitative imaging and semiotic analysis for exhaustive analysis of mitochondrial morphology in living adherent cells. Our tool has potential for broader applications in other research areas such as cell biology and medicine, high-throughput drug screening as well as predictive and environmental toxicology.
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Affiliation(s)
- Sophie Charrasse
- ISEM, Institut des Sciences de l’Evolution, UMR 5554, Université Montpellier, CNRS, IRD, Montpellier, France
| | - Victor Racine
- QuantaCell SAS, Institute for Regenerative Medicine and Biotherapy (IRMB), Saint Eloi Hospital, Montpellier University Hospital, Montpellier, France
| | - Charlotte Saint-Omer
- ISEM, Institut des Sciences de l’Evolution, UMR 5554, Université Montpellier, CNRS, IRD, Montpellier, France
| | - Titouan Poquillon
- ISEM, Institut des Sciences de l’Evolution, UMR 5554, Université Montpellier, CNRS, IRD, Montpellier, France
- QuantaCell SAS, Institute for Regenerative Medicine and Biotherapy (IRMB), Saint Eloi Hospital, Montpellier University Hospital, Montpellier, France
| | - Loïc Lionnard
- ISEM, Institut des Sciences de l’Evolution, UMR 5554, Université Montpellier, CNRS, IRD, Montpellier, France
| | - Marine Ledru
- ISEM, Institut des Sciences de l’Evolution, UMR 5554, Université Montpellier, CNRS, IRD, Montpellier, France
| | | | | | - Karima Kissa
- VBIC, INSERM U1047, Université de Montpellier, Montpellier, France
| | - Richard E. Frye
- Autism Discovery and Treatment Foundation, Phoenix, AZ, United States America
| | - Manuela Pastore
- STATABIO BioCampus, Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Christelle Reynes
- STATABIO BioCampus, Université de Montpellier, CNRS, INSERM, Montpellier, France
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | | | | | - Abdel Aouacheria
- ISEM, Institut des Sciences de l’Evolution, UMR 5554, Université Montpellier, CNRS, IRD, Montpellier, France
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14
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Kritskaya KA, Fedotova EI, Berezhnov AV. Impaired Mitochondrial Network Morphology and Reactive Oxygen Species Production in Fibroblasts from Parkinson's Disease Patients. Biomedicines 2024; 12:282. [PMID: 38397882 PMCID: PMC10886641 DOI: 10.3390/biomedicines12020282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/17/2024] [Accepted: 01/22/2024] [Indexed: 02/25/2024] Open
Abstract
The mitochondrial network (MN) is a dynamic structure undergoing constant remodeling in the cell. It is assumed that perturbations to the MN may be associated with various pathologies, including Parkinson's disease (PD). Using automatic image analysis and super-resolution microscopy, we have assessed the MN parameters in fibroblasts from patients with established hereditary PD mutations (associated with PINK1, LRRK2, and α-synuclein, as well as PINK1 and Parkin proteins simultaneously) under normal conditions and after hydrogen peroxide-induced stress. Fibroblasts with the Pink1/Parkin mutation are most different in morphology to fibroblasts obtained from conditionally healthy donors: the MN is larger, and it contains longer mitochondria and accumulated individual mitochondria. In addition to MN, we evaluated other cellular parameters, such as cytosolic and mitochondrial ROS production and mitochondrial membrane potential. It has been shown that mitochondria of fibroblasts with mutations in genes encoding PINK1, α-synuclein, and Pink/Parkin tend towards hyperpolarization and cytosolic ROS overproduction, while mitochondrial ROS production was higher only in fibroblasts with PINK1 and α-synuclein mutations.
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Affiliation(s)
- Kristina A. Kritskaya
- Institute of Cell Biophysics, Russian Academy of Sciences, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, 3 Institutskaya Street, 142290 Pushchino, Russia;
| | | | - Alexey V. Berezhnov
- Institute of Cell Biophysics, Russian Academy of Sciences, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, 3 Institutskaya Street, 142290 Pushchino, Russia;
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15
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Rao J, Sun W, Wang X, Li J, Zhang Z, Zhou F. A novel role for astrocytic fragmented mitochondria in regulating morphine addiction. Brain Behav Immun 2023; 113:328-339. [PMID: 37543246 DOI: 10.1016/j.bbi.2023.07.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/28/2023] [Accepted: 07/30/2023] [Indexed: 08/07/2023] Open
Abstract
Chronic morphine exposure causes the development of addictive behaviors, accompanied by an increase in neuroinflammation in the central nervous system. While previous researches have shown that astrocytes contribute to brain diseases, the role of astrocyte in morphine addiction through induced neuroinflammation remain unexplored. Here we show that morphine-induced inflammation requires the crosstalk among neuron, astrocyte, and microglia. Specifically, astrocytes respond to morphine-induced neuronal activation by increasing glycolytic metabolism. The dysregulation of glycolysis leads to an increased in the generation of mitochondrial reactive oxygen species and causes excessive mitochondrial fragmentation in astrocytes. These fragmented, dysfunctional mitochondria are consequently released into extracellular environment, leading to activation of microglia and release of inflammatory cytokines. We also found that blocking the nicotinamide adenine dinucleotide salvage pathway with FK866 could inhibit astrocytic glycolysis and restore the mitochondrial homeostasis and effectively attenuate neuroinflammatory responses. Importantly, FK866 reversed morphine-induced addictive behaviors in mice. In summary, our findings illustrate an essential role of astrocytic immunometabolism in morphine induced neural and behavioral plasticity, providing a novel insight into the interactions between neurons, astrocytes, and microglia in the brain affected by chronic morphine exposure.
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Affiliation(s)
- Jie Rao
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Weikang Sun
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Xinran Wang
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Jin Li
- Pain Department, Hainan Cancer Hospital, Haikou 570312, China
| | - Zhichun Zhang
- Pain Department, Hainan Cancer Hospital, Haikou 570312, China
| | - Feifan Zhou
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou 570228, China.
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16
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Koren SA, Ahmed Selim N, De la Rosa L, Horn J, Farooqi MA, Wei AY, Müller-Eigner A, Emerson J, Johnson GVW, Wojtovich AP. All-optical spatiotemporal mapping of ROS dynamics across mitochondrial microdomains in situ. Nat Commun 2023; 14:6036. [PMID: 37758713 PMCID: PMC10533892 DOI: 10.1038/s41467-023-41682-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Hydrogen peroxide (H2O2) functions as a second messenger to signal metabolic distress through highly compartmentalized production in mitochondria. The dynamics of reactive oxygen species (ROS) generation and diffusion between mitochondrial compartments and into the cytosol govern oxidative stress responses and pathology, though these processes remain poorly understood. Here, we couple the H2O2 biosensor, HyPer7, with optogenetic stimulation of the ROS-generating protein KillerRed targeted into multiple mitochondrial microdomains. Single mitochondrial photogeneration of H2O2 demonstrates the spatiotemporal dynamics of ROS diffusion and transient hyperfusion of mitochondria due to ROS. This transient hyperfusion phenotype required mitochondrial fusion but not fission machinery. Measurement of microdomain-specific H2O2 diffusion kinetics reveals directionally selective diffusion through mitochondrial microdomains. All-optical generation and detection of physiologically-relevant concentrations of H2O2 between mitochondrial compartments provide a map of mitochondrial H2O2 diffusion dynamics in situ as a framework to understand the role of ROS in health and disease.
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Affiliation(s)
- Shon A Koren
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester, NY, 14642, Box 711/604, USA
| | - Nada Ahmed Selim
- University of Rochester Medical Center, Department of Pharmacology and Physiology, 575 Elmwood Ave., Rochester, NY, 14642, Box 711/604, USA
| | - Lizbeth De la Rosa
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester, NY, 14642, Box 711/604, USA
| | - Jacob Horn
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester, NY, 14642, Box 711/604, USA
| | - M Arsalan Farooqi
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester, NY, 14642, Box 711/604, USA
| | - Alicia Y Wei
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester, NY, 14642, Box 711/604, USA
| | - Annika Müller-Eigner
- Research Group Epigenetics, Metabolism and Longevity, Research Institute for Farm Animal Biology (FBN), Dummerstorf, 18196, Germany
| | - Jacen Emerson
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester, NY, 14642, Box 711/604, USA
| | - Gail V W Johnson
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester, NY, 14642, Box 711/604, USA
| | - Andrew P Wojtovich
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester, NY, 14642, Box 711/604, USA.
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17
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Chi H, Song M, Zhang J, Zhou J, Liu D. Relationship between acute glucose variability and cognitive decline in type 2 diabetes: A systematic review and meta-analysis. PLoS One 2023; 18:e0289782. [PMID: 37656693 PMCID: PMC10473499 DOI: 10.1371/journal.pone.0289782] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 07/25/2023] [Indexed: 09/03/2023] Open
Abstract
BACKGROUND Cognitive decline is one of the most widespread chronic complications of diabetes, which occurs in more than half of the patients with type 2 diabetes (T2DM). Emerging evidences have suggested that glucose variability (GV) is associated with the pathogenesis of diabetic complications. However, the influence of acute GV on cognitive dysfunction in T2DM is still controversial. The aim of the study was to evaluate the association between acute GV and cognitive defect in T2DM, and provide a most recent and comprehensive summary of the evidences in this research field. METHODS PubMed, Cochrane library, EMBASE, Web of science, Sinomed, China National Knowledge Infrastructure (CNKI), and Wanfang were searched for articles that reported on the association between acute GV and cognitive impairment in T2DM. RESULTS 9 eligible studies were included, with a total of 1263 patients with T2DM involved. Results showed that summary Fisher's z value was -0.23 [95%CI (-0.39, -0.06)], suggesting statistical significance (P = 0.006). Summary r value was -0.22 [95%CI (-0.37, -0.06)]. A lower cognitive performance was found in the subjects with greater glucose variation, which has statistical significance. Mean amplitude of glycemic excursions (MAGE) was associated with a higher risk of poor functional outcomes. Fisher's z value was -0.35 [95%CI (-0.43, -0.25)], indicating statistical significance (P = 0.011). Sensitivity analyses by omitting individual studies showed stability of the results. CONCLUSIONS Overall, higher acute GV is associated with an increased risk of cognitive impairment in patients with T2DM. Further studies should be required to determine whether targeted intervention of reducing acute GV could prevent cognitive decline.
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Affiliation(s)
- Haiyan Chi
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
- Department of Endocrinology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, China
| | - Min Song
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Jinbiao Zhang
- Department of Neurology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, China
| | - Junyu Zhou
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Deshan Liu
- Department of Traditional Chinese Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
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18
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Grel H, Woznica D, Ratajczak K, Kalwarczyk E, Anchimowicz J, Switlik W, Olejnik P, Zielonka P, Stobiecka M, Jakiela S. Mitochondrial Dynamics in Neurodegenerative Diseases: Unraveling the Role of Fusion and Fission Processes. Int J Mol Sci 2023; 24:13033. [PMID: 37685840 PMCID: PMC10487704 DOI: 10.3390/ijms241713033] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/16/2023] [Accepted: 08/20/2023] [Indexed: 09/10/2023] Open
Abstract
Neurodegenerative diseases (NDs) are a diverse group of disorders characterized by the progressive degeneration and death of neurons, leading to a range of neurological symptoms. Despite the heterogeneity of these conditions, a common denominator is the implication of mitochondrial dysfunction in their pathogenesis. Mitochondria play a crucial role in creating biomolecules, providing energy through adenosine triphosphate (ATP) generated by oxidative phosphorylation (OXPHOS), and producing reactive oxygen species (ROS). When they're not functioning correctly, becoming fragmented and losing their membrane potential, they contribute to these diseases. In this review, we explore how mitochondria fuse and undergo fission, especially in the context of NDs. We discuss the genetic and protein mutations linked to these diseases and how they impact mitochondrial dynamics. We also look at the key regulatory proteins in fusion (MFN1, MFN2, and OPA1) and fission (DRP1 and FIS1), including their post-translational modifications. Furthermore, we highlight potential drugs that can influence mitochondrial dynamics. By unpacking these complex processes, we aim to direct research towards treatments that can improve life quality for people with these challenging conditions.
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Affiliation(s)
- Hubert Grel
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Damian Woznica
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Katarzyna Ratajczak
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Ewelina Kalwarczyk
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Julia Anchimowicz
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Weronika Switlik
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Piotr Olejnik
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Piotr Zielonka
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Magdalena Stobiecka
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Slawomir Jakiela
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
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19
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Yang SG, Bae JW, Park HJ, Koo DB. Mito-TEMPO protects preimplantation porcine embryos against mitochondrial fission-driven apoptosis through DRP1/PINK1-mediated mitophagy. Life Sci 2023; 315:121333. [PMID: 36608867 DOI: 10.1016/j.lfs.2022.121333] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/09/2022] [Accepted: 12/24/2022] [Indexed: 01/05/2023]
Abstract
AIMS Mdivi-1 (Md-1) is a well-known inhibitor of mitochondrial fission and mitophagy. The mitochondrial superoxide scavenger Mito-TEMPO (MT) exerts positive effects on the developmental competence of pig embryos. This study aimed to explore the adverse effects of Md-1 on developmental capacity in porcine embryos and the protective effects of MT against Md-1-induced injury. MAIN METHODS We exposed porcine embryos to Md-1 (10 and 50 μM) for 2 days after in vitro fertilization (IVF). MT (0.1 μM) treatment was applied for 4 days after exposing embryos to Md-1. We assessed blastocyst development, DNA damage, mitochondrial superoxide production, and mitochondrial distribution using TUNEL assay, Mito-SOX, and Mito-tracker, respectively. Subsequently, the expression of PINK1, DRP1, and p-DRP1Ser616 was evaluated via immunofluorescence staining and Western blot analysis. KEY FINDINGS Md-1 compromised the developmental competence of blastocysts. Apoptosis and mitochondrial superoxide production were significantly upregulated in 50 μM Md-1-treated embryos, accompanied by a downregulation of p-DRP1Ser616, PINK1, and LC3B levels and lower mitophagy activity at the blastocyst stage. We confirmed the protective effects of MT against the detrimental effect of Md-1 on blastocyst developmental competence, mitochondrial fission, and DRP1/PINK1-mediated mitophagy activation. Eventually, MT recovered DRP1/PINK1-mediated mitophagy and mitochondrial fission by inhibiting superoxide production in Md-1-treated embryos. SIGNIFICANCE MT protects against detrimental effects of Md-1 on porcine embryos by suppressing superoxide production. These findings expand available scientific knowledge on improving outcomes of IVF.
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Affiliation(s)
- Seul-Gi Yang
- Department of Biotechnology, College of Engineering, Daegu University, 201 Daegudae-ro, Jillyang, Gyeongsan, Gyeongbuk 38453, Republic of Korea; Institute of Infertility, Daegu University, 201 Daegudae-ro, Jillyang, Gyeongsan, Gyeongbuk 38453, Republic of Korea
| | - Jin-Wook Bae
- Department of Biotechnology, College of Engineering, Daegu University, 201 Daegudae-ro, Jillyang, Gyeongsan, Gyeongbuk 38453, Republic of Korea; Institute of Infertility, Daegu University, 201 Daegudae-ro, Jillyang, Gyeongsan, Gyeongbuk 38453, Republic of Korea
| | - Hyo-Jin Park
- Department of Biotechnology, College of Engineering, Daegu University, 201 Daegudae-ro, Jillyang, Gyeongsan, Gyeongbuk 38453, Republic of Korea; Institute of Infertility, Daegu University, 201 Daegudae-ro, Jillyang, Gyeongsan, Gyeongbuk 38453, Republic of Korea.
| | - Deog-Bon Koo
- Department of Biotechnology, College of Engineering, Daegu University, 201 Daegudae-ro, Jillyang, Gyeongsan, Gyeongbuk 38453, Republic of Korea; Institute of Infertility, Daegu University, 201 Daegudae-ro, Jillyang, Gyeongsan, Gyeongbuk 38453, Republic of Korea.
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20
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Chen TH, Koh KY, Lin KMC, Chou CK. Mitochondrial Dysfunction as an Underlying Cause of Skeletal Muscle Disorders. Int J Mol Sci 2022; 23:12926. [PMID: 36361713 PMCID: PMC9653750 DOI: 10.3390/ijms232112926] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/21/2022] [Accepted: 10/21/2022] [Indexed: 09/19/2023] Open
Abstract
Mitochondria are an important energy source in skeletal muscle. A main function of mitochondria is the generation of ATP for energy through oxidative phosphorylation (OXPHOS). Mitochondrial defects or abnormalities can lead to muscle disease or multisystem disease. Mitochondrial dysfunction can be caused by defective mitochondrial OXPHOS, mtDNA mutations, Ca2+ imbalances, mitochondrial-related proteins, mitochondrial chaperone proteins, and ultrastructural defects. In addition, an imbalance between mitochondrial fusion and fission, lysosomal dysfunction due to insufficient biosynthesis, and/or defects in mitophagy can result in mitochondrial damage. In this review, we explore the association between impaired mitochondrial function and skeletal muscle disorders. Furthermore, we emphasize the need for more research to determine the specific clinical benefits of mitochondrial therapy in the treatment of skeletal muscle disorders.
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Affiliation(s)
- Tsung-Hsien Chen
- Department of Internal Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 60002, Taiwan
| | - Kok-Yean Koh
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 60002, Taiwan
| | - Kurt Ming-Chao Lin
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan 35053, Taiwan
| | - Chu-Kuang Chou
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 60002, Taiwan
- Obesity Center, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi 60002, Taiwan
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21
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Lambiri DW, Levin LA. Modeling Reactive Oxygen Species-Induced Axonal Loss in Leber Hereditary Optic Neuropathy. Biomolecules 2022; 12:1411. [PMID: 36291620 PMCID: PMC9599876 DOI: 10.3390/biom12101411] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 11/17/2022] Open
Abstract
Leber hereditary optic neuropathy (LHON) is a rare syndrome that results in vision loss. A necessary but not sufficient condition for its onset is the existence of known mitochondrial DNA mutations that affect complex I biomolecular structure. Cybrids with LHON mutations generate higher rates of reactive oxygen species (ROS). This study models how ROS, particularly H2O2, could signal and execute the axonal degeneration process that underlies LHON. We modeled and explored several hypotheses regarding the influence of H2O2 on the dynamics of propagation of axonal degeneration in LHON. Zonal oxidative stress, corresponding to H2O2 gradients, correlated with the morphology of injury exhibited in the LHON pathology. If the axonal membrane is highly permeable to H2O2 and oxidative stress induces larger production of H2O2, small injuries could trigger cascading failures of neighboring axons. The cellular interdependence created by H2O2 diffusion, and the gradients created by tissue variations in H2O2 production and scavenging, result in injury patterns and surviving axonal loss distributions similar to LHON tissue samples. Specifically, axonal degeneration starts in the temporal optic nerve, where larger groups of small diameter fibers are located and propagates from that region. These findings correlate well with clinical observations of central loss of visual field, visual acuity, and color vision in LHON, and may serve as an in silico platform for modeling the mechanism of action for new therapeutics.
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Affiliation(s)
- Darius W. Lambiri
- Department of Physiology, McGill University, Montreal, QC H3G 1Y6, Canada
| | - Leonard A. Levin
- Department of Ophthalmology and Visual Sciences, McGill University, Montreal, QC H4A 3S5, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
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22
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Tracy EP, Nair R, Rowe G, Beare JE, Beyer A, LeBlanc AJ. Adipose stromal vascular fraction reverses mitochondrial dysfunction and hyperfission in aging-induced coronary microvascular disease. Am J Physiol Heart Circ Physiol 2022; 323:H749-H762. [PMID: 36018760 PMCID: PMC9529257 DOI: 10.1152/ajpheart.00311.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/22/2022] [Accepted: 08/22/2022] [Indexed: 01/28/2023]
Abstract
Aging is associated with blunted coronary microvascular vasodilatory function. Previously, systemically administered adipose stromal vascular fraction (SVF) therapy reversed aging-induced attenuation of β1-adrenergic- and flow-mediated dilation dependent on reducing mitochondrial reactive oxygen species. We hypothesized that SVF-mediated recovery of microvascular dilatory function is dependent on recovery of mitochondrial function, specifically by reducing mitochondrial hyperfission. Female Fischer-344 rats were allocated into young control, old control, and old + SVF therapy groups. Pressure myography, immunofluorescent staining, Western blot analysis, and RNA sequencing were performed to determine coronary microvascular mitochondrial dynamics and function. Gene and protein expression of fission-mediator DRP-1 was enhanced with aging but reversed by SVF therapy. SVF facilitated an increase in fusion-mediator MFN-1 gene and protein expression. Mitochondrial morphology was characterized as rod-like and densely networked in young controls, isolated circular and punctate with aging, and less circularity with partially restored mitochondrial branch density with SVF therapy. Decreased mitochondrial membrane potential and ATP bioavailability in aged animals at baseline and during flow-mediated dilation were reversed by SVF and accompanied with enhanced oxygen consumption. Dilation to norepinephrine and flow in young controls were dependent on uninhibited mitochondrial fusion, whereas inhibiting fission did not restore aged microvessel response to norepinephrine or flow. SVF-mediated recovery of β-adrenergic function was dependent on uninhibited mitochondrial fusion, whereas recovery of flow-mediated dilation was dependent on maintained mitochondrial fission. Impaired dilation in aging is mitigated by SVF therapy, which recovers mitochondrial function and fission/fusion balance.NEW & NOTEWORTHY We elucidated the consequences of aging on coronary microvascular mitochondrial health as well as SVF's ability to reverse these effects. Aging shifts gene/protein expression and mitochondrial morphology indicating hyperfission, alongside attenuated mitochondrial membrane potential and ATP bioavailability, all reversed using SVF therapy. Mitochondrial membrane potential and ATP levels correlated with vasodilatory efficiency. Mitochondrial dysfunction is a contributing pathological factor in aging that can be targeted by therapeutic SVF to preserve microvascular dilative function.
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Affiliation(s)
- Evan Paul Tracy
- Department of Physiology, University of Louisville, Louisville, Kentucky
| | - Rajeev Nair
- Department of Physiology, University of Louisville, Louisville, Kentucky
| | - Gabrielle Rowe
- Department of Physiology, University of Louisville, Louisville, Kentucky
| | - Jason E Beare
- Department of Cardiovascular and Thoracic Surgery, University of Louisville, Louisville, Kentucky
- Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, Kentucky
| | - Andreas Beyer
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Amanda Jo LeBlanc
- Department of Cardiovascular and Thoracic Surgery, University of Louisville, Louisville, Kentucky
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23
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Sabry MM, Ahmed MM, Maksoud OMA, Rashed L, Morcos MA, El-Maaty AA, Maher Galal A, Sharawy N. Carnitine, apelin and resveratrol regulate mitochondrial quality control (QC) related proteins and ameliorate acute kidney injury: role of hydrogen peroxide. Arch Physiol Biochem 2022; 128:1391-1400. [PMID: 32538173 DOI: 10.1080/13813455.2020.1773504] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Mitochondrial impairment is recognised as a prominent feature in kidney diseases. Therefore, we investigated whether the effects of resveratrol, L-carnitine, and apelin in the acute kidney injury model were associated with modulation of mitochondrial quality control (QC) related proteins, intra-renal renin-angiotensin (RAS) activity, adenosine triphosphate (ATP) and Na+-K+ ATPase gene expression. Rats were randomly assigned to 7 groups: Distilled water injected control group, DMSO injected control group, distilled water injected lipopolysaccharide (LPS) group, DMSO injected LPS group, resveratrol injected LPS group, L-carnitine injected LPS group and apelin 13 injected LPS group. We observed that resveratrol, L-carnitine, and apelin treatments altered mitochondrial (QC) related protein levels (Pink1, Parkin, BNIP-3, Drp1, and PGC1α), decreased intra-renal RAS parameters, increased ATP level and upregulated Na+-K+ ATPase gene expression in renal tissue. Our results provide new insight into the role of mitochondrial quality control and how different antioxidants exert beneficial effects on acute kidney injury.
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Affiliation(s)
- Maha Mohamed Sabry
- Department of Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Mona Mohamed Ahmed
- Department of Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | | | - Laila Rashed
- Department of Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Mary Attia Morcos
- Department of Histology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Amal Abo El-Maaty
- Department of Animal Reproduction and Artificial Insemination, Veterinary Division, National Research Centre, Cairo, Egypt
| | - Amr Maher Galal
- Department of Pharmacology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Nivin Sharawy
- Department of Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt
- Department of physiology, Cairo University Hospitals, Cairo, Egypt
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24
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Wang D, Cao L, Zhou X, Wang G, Ma Y, Hao X, Fan H. Mitigation of honokiol on fluoride-induced mitochondrial oxidative stress, mitochondrial dysfunction, and cognitive deficits through activating AMPK/PGC-1α/Sirt3. JOURNAL OF HAZARDOUS MATERIALS 2022; 437:129381. [PMID: 35752048 DOI: 10.1016/j.jhazmat.2022.129381] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 05/29/2022] [Accepted: 06/11/2022] [Indexed: 06/15/2023]
Abstract
Oxidative stress and mitochondrial dysfunction contribute greatly to fluoride-induced cognitive impairment and behavioural disorders. Honokiol, a natural biphenolic compound, possesses antioxidant and mitochondrial protective properties. The present study investigated the protective actions of honokiol on NaF-elicited cognitive deficits and elucidated the possible mechanism of honokiol-mediated protection. The results demonstrated that honokiol administration markedly attenuated fluoride-induced cognitive impairments and neural/synaptic injury in mice. Moreover, honokiol elevated the activity and expression of SOD2 and promoted mtROS scavenging through Sirt3 activation in NaF-treated mice and SH-SY5Y cell lines. Meanwhile, honokiol substantially lowered mtROS production by enhancing Sirt3-mediated mitochondrial DNA (mtDNA) transcription, thereby leading to significant increases in ATP synthesis and complex I activity. Further studies revealed that honokiol activated AMPK and upregulated the PGC-1α and Sirt3 protein expression in vivo and in vitro. Intriguingly, the protective actions of honokiol on oxidative stress and mitochondrial dysfunction were abolished by AMPK shRNA or Sirt3 shRNA. Notably, AMPK knockdown prevented the increase in PGC-1α and Sirt3 expression induced by honokiol, while Sirt3 shRNA suppressed Sirt3 signaling without significant effects on p-AMPK and PGC-1α expression. In conclusion, our findings indicate that honokiol mitigates NaF-induced oxidative stress and mitochondrial dysfunction by regulating mtROS homeostasis, partly via the AMPK/PGC-1α/Sirt3 pathway, which ultimately contributes to neuronal/synaptic injury and cognitive deficits.
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Affiliation(s)
- Dongmei Wang
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China.
| | - Luyang Cao
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Xiang Zhou
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Gang Wang
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Yilu Ma
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Xueqin Hao
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Hua Fan
- Department of Neurology, First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China.
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25
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Chen S, Li Y, Fu S, Li Y, Wang C, Sun P, Li H, Tian J, Du GQ. Melatonin alleviates arginine vasopressin-induced cardiomyocyte apoptosis via increasing Mst1-Nrf2 pathway activity to reduce oxidative stress. Biochem Pharmacol 2022; 206:115265. [DOI: 10.1016/j.bcp.2022.115265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 09/08/2022] [Accepted: 09/23/2022] [Indexed: 11/27/2022]
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26
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Garrido-Bazán V, Aguirre J. H 2O 2 Induces Calcium and ERMES Complex-Dependent Mitochondrial Constriction and Division as Well as Mitochondrial Outer Membrane Remodeling in Aspergillus nidulans. J Fungi (Basel) 2022; 8:829. [PMID: 36012817 PMCID: PMC9410301 DOI: 10.3390/jof8080829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/29/2022] [Accepted: 08/01/2022] [Indexed: 11/16/2022] Open
Abstract
The dynamin-like protein DnmA and its receptor FisA are essential for H2O2-induced mitochondrial division in Aspergillus nidulans. Here, we show that in the absence of DnmA or FisA, mitochondria show few spontaneous transient constrictions, the frequency of which is extensively increased by H2O2 or the carbonyl cyanide m-chlorophenyl hydrazone (CCCP). While H2O2-induced constrictions are transient, CCCP induces a drastic and irreversible alteration of mitochondrial filaments. H2O2 induces a gradual mitochondrial depolarization, while CCCP-induced depolarization is abrupt. The calcium chelator BAPTA-AM prevents the formation of mitochondrial constrictions induced by either H2O2 or CCCP. H2O2 also induces major rearrangements of the mitochondrial outer membrane, which remain after constrictions dissipate, as well as changes in endoplasmic reticulum (ER) and nuclear morphology. Similar mitochondrial constriction, ER and nuclear morphology changes are detected during the early stages of asexual development. ER and ER-Mitochondria encounter structure (ERMES) complex-composed of proteins Mdm10, Mmm1, Mdm43 and Mdm12-are important for mitochondrial division in Saccharomyces cerevisiae. As the Mdm10 ortholog MdmB was found to be essential in A. nidulans, we evaluated its functions in ΔmdmB terminal mutants and ΔmdmB heterokaryons. ΔmdmB conidia produce a short germ tube that fails to grow further, in which inherited mitochondria become gigantic and round shaped, lacking clear contacts with the ER. In slow-growing ΔmdmB heterokaryotic mycelia, multiple hyphae contain very long mitochondria with high ROS levels, as occur in ΔdnmA and ΔfisA mutants. In this hyphae, H2O2 fails to induce mitochondrial constrictions but not outer mitochondrial membrane reshaping, indicating that these are two separate effects of H2O2. Our results indicate that H2O2 induces a generalized mitochondrial constriction response, prior to actual division, involving gradual depolarization; they also indicate that Ca2+ and the ERMES complex are critical for both mitochondrial constriction and division. This supports a view of mitochondrial dynamics as the result of a cascade of signaling events that can be initiated in vivo by H2O2.
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Affiliation(s)
| | - Jesús Aguirre
- Departamento de Biología Celular y del Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Apartado Postal 70-242, Ciudad de México 04510, Mexico
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27
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Stenberg S, Li J, Gjuvsland AB, Persson K, Demitz-Helin E, González Peña C, Yue JX, Gilchrist C, Ärengård T, Ghiaci P, Larsson-Berglund L, Zackrisson M, Smits S, Hallin J, Höög JL, Molin M, Liti G, Omholt SW, Warringer J. Genetically controlled mtDNA deletions prevent ROS damage by arresting oxidative phosphorylation. eLife 2022; 11:e76095. [PMID: 35801695 PMCID: PMC9427111 DOI: 10.7554/elife.76095] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 07/07/2022] [Indexed: 11/15/2022] Open
Abstract
Deletion of mitochondrial DNA in eukaryotes is currently attributed to rare accidental events associated with mitochondrial replication or repair of double-strand breaks. We report the discovery that yeast cells arrest harmful intramitochondrial superoxide production by shutting down respiration through genetically controlled deletion of mitochondrial oxidative phosphorylation genes. We show that this process critically involves the antioxidant enzyme superoxide dismutase 2 and two-way mitochondrial-nuclear communication through Rtg2 and Rtg3. While mitochondrial DNA homeostasis is rapidly restored after cessation of a short-term superoxide stress, long-term stress causes maladaptive persistence of the deletion process, leading to complete annihilation of the cellular pool of intact mitochondrial genomes and irrevocable loss of respiratory ability. This shows that oxidative stress-induced mitochondrial impairment may be under strict regulatory control. If the results extend to human cells, the results may prove to be of etiological as well as therapeutic importance with regard to age-related mitochondrial impairment and disease.
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Affiliation(s)
- Simon Stenberg
- Centre for Integrative Genetics, Department of Animal and Aquacultural Sciences, Norwegian University of Life SciencesÅsNorway
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Jing Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer CenterGuangzhouChina
- Université Côte d’Azur, CNRS, INSERM, IRCANNiceFrance
| | - Arne B Gjuvsland
- Centre for Integrative Genetics, Department of Animal and Aquacultural Sciences, Norwegian University of Life SciencesÅsNorway
| | - Karl Persson
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Erik Demitz-Helin
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Carles González Peña
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Jia-Xing Yue
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer CenterGuangzhouChina
- Université Côte d’Azur, CNRS, INSERM, IRCANNiceFrance
| | - Ciaran Gilchrist
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Timmy Ärengård
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Payam Ghiaci
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Lisa Larsson-Berglund
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Martin Zackrisson
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Silvana Smits
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Johan Hallin
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Johanna L Höög
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
| | - Mikael Molin
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
- Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburgSweden
| | - Gianni Liti
- Université Côte d’Azur, CNRS, INSERM, IRCANNiceFrance
| | - Stig W Omholt
- Department of Circulation and Medical Imaging, Cardiac Exercise Research Group, Norwegian University of Science and TechnologyTrondheimNorway
| | - Jonas Warringer
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburgSweden
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28
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SAMM50 Regulates Thermogenesis of Beige Adipocytes Differentiated from Human Adipose-Derived Stem Cells by Balancing Mitochondrial Dynamics. Int J Mol Sci 2022; 23:ijms23126764. [PMID: 35743205 PMCID: PMC9224253 DOI: 10.3390/ijms23126764] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/07/2022] [Accepted: 06/16/2022] [Indexed: 01/18/2023] Open
Abstract
Brown/beige adipocyte thermogenesis is a process that is important for energy balance. The thermogenesis of brown/beige adipocytes occurs in the mitochondria, which is modulated by the dynamic balance between mitochondrial fusion and fission. Mitophagy is also involved in mitochondrial dynamics. The sorting and assembly machinery (SAM) complex protein, SAMM50, plays a key role in mitochondrial dynamics and quality control through regulating mitophagy. However, the roles of SAMM50 in the thermogenesis of beige adipocytes remain unknown. Thus, the objective of this study was to conduct functional analyses of SAMM50. The expression of mitochondrial fusion genes was repressed by SAMM50 knockdown but was not altered by SAMM50 overexpression. These results agreed with the distribution of the fluorescence-stained mitochondria and an mtDNA copy number. In contrast, the expression of mitochondrial fission genes showed an opposite outcome. As a result, suppression by the SAMM50 shRNA inhibited the expression of thermogenic genes (UCP1, PPARGC1A, DIO2, ELOVL3, CIDEA, and CIDEC) and mitochondrial-related genes (CYCS, COX7A1, TFAM, CPT1B, and CPT2). Conversely, SAMM50 overexpression promoted the expression of the thermogenic genes and mitochondrial genes. Thus, SAMM50 links the balance between the mitochondrial dynamics and thermogenesis of beige adipocytes.
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29
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Effects of Linkers and Substitutions on Multitarget Directed Ligands for Alzheimer’s Diseases: Emerging Paradigms and Strategies. Int J Mol Sci 2022; 23:ijms23116085. [PMID: 35682763 PMCID: PMC9181730 DOI: 10.3390/ijms23116085] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 02/06/2023] Open
Abstract
Alzheimer’s disease (AD) is multifactorial, progressive and the most predominant cause of cognitive impairment and dementia worldwide. The current “one-drug, one-target” approach provides only symptomatic relief to the condition but is unable to cure the disease completely. The conventional single-target therapeutic approach might not always induce the desired effect due to the multifactorial nature of AD. Hence, multitarget strategies have been proposed to simultaneously knock out multiple targets involved in the development of AD. Herein, we provide an overview of the various strategies, followed by the multitarget-directed ligand (MTDL) development, rationale designs and efficient examples. Furthermore, the effects of the linkers and substitutional functional groups on MTDLs against various targets of AD and their modes of action are also discussed.
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30
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Piccialli I, Tedeschi V, Caputo L, D’Errico S, Ciccone R, De Feo V, Secondo A, Pannaccione A. Exploring the Therapeutic Potential of Phytochemicals in Alzheimer’s Disease: Focus on Polyphenols and Monoterpenes. Front Pharmacol 2022; 13:876614. [PMID: 35600880 PMCID: PMC9114803 DOI: 10.3389/fphar.2022.876614] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/11/2022] [Indexed: 12/21/2022] Open
Abstract
Alzheimer’s disease (AD) is a chronic, complex neurodegenerative disorder mainly characterized by the irreversible loss of memory and cognitive functions. Different hypotheses have been proposed thus far to explain the etiology of this devastating disorder, including those centered on the Amyloid-β (Aβ) peptide aggregation, Tau hyperphosphorylation, neuroinflammation and oxidative stress. Nonetheless, the therapeutic strategies conceived thus far to treat AD neurodegeneration have proven unsuccessful, probably due to the use of single-target drugs unable to arrest the progressive deterioration of brain functions. For this reason, the theoretical description of the AD etiology has recently switched from over-emphasizing a single deleterious process to considering AD neurodegeneration as the result of different pathogenic mechanisms and their interplay. Moreover, much relevance has recently been conferred to several comorbidities inducing insulin resistance and brain energy hypometabolism, including diabetes and obesity. As consequence, much interest is currently accorded in AD treatment to a multi-target approach interfering with different pathways at the same time, and to life-style interventions aimed at preventing the modifiable risk-factors strictly associated with aging. In this context, phytochemical compounds are emerging as an enormous source to draw on in the search for multi-target agents completing or assisting the traditional pharmacological medicine. Intriguingly, many plant-derived compounds have proven their efficacy in counteracting several pathogenic processes such as the Aβ aggregation, neuroinflammation, oxidative stress and insulin resistance. Many strategies have also been conceived to overcome the limitations of some promising phytochemicals related to their poor pharmacokinetic profiles, including nanotechnology and synthetic routes. Considering the emerging therapeutic potential of natural medicine, the aim of the present review is therefore to highlight the most promising phytochemical compounds belonging to two major classes, polyphenols and monoterpenes, and to report the main findings about their mechanisms of action relating to the AD pathogenesis.
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Affiliation(s)
- Ilaria Piccialli
- Division of Pharmacology, Department of Neuroscience, Reproductive and Dentistry Sciences, School of Medicine, University of Naples “Federico II”, Naples, Italy
| | - Valentina Tedeschi
- Division of Pharmacology, Department of Neuroscience, Reproductive and Dentistry Sciences, School of Medicine, University of Naples “Federico II”, Naples, Italy
| | - Lucia Caputo
- Department of Pharmacy, University of Salerno, Salerno, Italy
| | - Stefano D’Errico
- Department of Pharmacy, University of Naples “Federico II”, Naples, Italy
| | - Roselia Ciccone
- Division of Pharmacology, Department of Neuroscience, Reproductive and Dentistry Sciences, School of Medicine, University of Naples “Federico II”, Naples, Italy
| | - Vincenzo De Feo
- Department of Pharmacy, University of Salerno, Salerno, Italy
| | - Agnese Secondo
- Division of Pharmacology, Department of Neuroscience, Reproductive and Dentistry Sciences, School of Medicine, University of Naples “Federico II”, Naples, Italy
| | - Anna Pannaccione
- Division of Pharmacology, Department of Neuroscience, Reproductive and Dentistry Sciences, School of Medicine, University of Naples “Federico II”, Naples, Italy
- *Correspondence: Anna Pannaccione,
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31
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Burtscher J, Romani M, Bernardo G, Popa T, Ziviani E, Hummel FC, Sorrentino V, Millet GP. Boosting mitochondrial health to counteract neurodegeneration. Prog Neurobiol 2022; 215:102289. [DOI: 10.1016/j.pneurobio.2022.102289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 03/23/2022] [Accepted: 05/25/2022] [Indexed: 12/22/2022]
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32
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Chang KT, Jezek J, Campbell AN, Stieg DC, Kiss ZA, Kemper K, Jiang P, Lee HO, Kruger WD, van Hasselt PM, Strich R. Aberrant cyclin C nuclear release induces mitochondrial fragmentation and dysfunction in MED13L syndrome fibroblasts. iScience 2022; 25:103823. [PMID: 35198885 PMCID: PMC8844603 DOI: 10.1016/j.isci.2022.103823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 11/02/2021] [Accepted: 01/21/2022] [Indexed: 12/25/2022] Open
Abstract
MED13L syndrome is a haploinsufficiency developmental disorder characterized by intellectual disability, heart malformation, and hypotonia. MED13L controls transcription by tethering the cyclin C-Cdk8 kinase module (CKM) to the Mediator complex. In addition, cyclin C has CKM-independent roles in the cytoplasm directing stress-induced mitochondrial fragmentation and regulated cell death. Unstressed MED13L S1497 F/fs patient fibroblasts exhibited aberrant cytoplasmic cyclin C localization, mitochondrial fragmentation, and a 6-fold reduction in respiration. In addition, the fibroblasts exhibited reduced mtDNA copy number, reduction in mitochondrial membrane integrity, and hypersensitivity to oxidative stress. Finally, transcriptional analysis of MED13L mutant fibroblasts revealed reduced mRNA levels for several genes necessary for normal mitochondrial function. Pharmacological or genetic approaches preventing cyclin C-mitochondrial localization corrected the fragmented mitochondrial phenotype and partially restored organelle function. In conclusion, this study found that mitochondrial dysfunction is an underlying defect in cells harboring the MED13L S1497 F/fs allele and identified cyclin C mis-localization as the likely cause. These results provide a new avenue for understanding this disorder.
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Affiliation(s)
- Kai-Ti Chang
- Department of Molecular Biology, Graduate School of Biomedical Sciences, Rowan University School of Osteopathic Medicine, Stratford, NJ 08084, USA
| | - Jan Jezek
- Department of Molecular Biology, Graduate School of Biomedical Sciences, Rowan University School of Osteopathic Medicine, Stratford, NJ 08084, USA
| | - Alicia N Campbell
- Department of Molecular Biology, Graduate School of Biomedical Sciences, Rowan University School of Osteopathic Medicine, Stratford, NJ 08084, USA
| | - David C Stieg
- Department of Molecular Biology, Graduate School of Biomedical Sciences, Rowan University School of Osteopathic Medicine, Stratford, NJ 08084, USA
| | - Zachary A Kiss
- Department of Medicine, Rowan University School of Osteopathic Medicine, Stratford, NJ 08084, USA
| | - Kevin Kemper
- Department of Molecular Biology, Graduate School of Biomedical Sciences, Rowan University School of Osteopathic Medicine, Stratford, NJ 08084, USA
| | - Ping Jiang
- Department of Molecular Biology, Graduate School of Biomedical Sciences, Rowan University School of Osteopathic Medicine, Stratford, NJ 08084, USA
| | - Hyung-Ok Lee
- Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | | | - Peter M van Hasselt
- Department of Metabolic and Endocrine Disease, University of Utrecht Medical Center, Utrecht, 3584 CX, the Netherlands
| | - Randy Strich
- Department of Molecular Biology, Graduate School of Biomedical Sciences, Rowan University School of Osteopathic Medicine, Stratford, NJ 08084, USA
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33
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Urbisz AZ, Chajec Ł, Małota K, Student S, Sawadro MK, Śliwińska MA, Świątek P. All for one - changes in mitochondrial morphology and activity during syncytial oogenesis. Biol Reprod 2022; 106:1232-1253. [PMID: 35156116 DOI: 10.1093/biolre/ioac035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 12/23/2021] [Accepted: 02/10/2022] [Indexed: 11/14/2022] Open
Abstract
The syncytial groups of germ cells (germ-line cysts) forming in ovaries of clitellate annelids are an attractive model to study mitochondrial stage-specific changes. Using transmission electron microscopy, serial block-face scanning electron microscopy, and fluorescent microscopy, we analyzed the mitochondria distribution and morphology and the state of membrane potential in female cysts in Enchytraeus albidus. We visualized in 3D at the ultrastructural level mitochondria in cysts at successive stages: 2-celled, 4-celled, 16-celled cysts, and cyst in advanced oogenesis. We found that mitochondria form extensive aggregates - they are fused and connected into large and branched mitochondrial networks. The most extensive networks are formed with up to 10,000 fused mitochondria, whereas individual organelles represent up to 2% of the total mitochondrial volume. We classify such morphology of mitochondria as a dynamic hyperfusion state, and suggest that it can maintain their high activity and intensifies the process of cellular respiration within the syncytial cysts. We found some individual mitochondria undergoing degradation, which implies that damaged mitochondria are removed from networks for their final elimination. As it was shown that growing oocytes possess less active mitochondria than the nurse cells, it suggests that the high activity of mitochondria in the nurse cells and their dynamic hyperfusion state serve the needs of the growing oocyte. Additionally, we measured by calorimetry the total antioxidant capacity of germ-line cysts in comparison to somatic tissue, and it suggests that antioxidative defense systems, together with mitochondrial networks, can effectively protect germ-line mitochondria from damage.
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Affiliation(s)
- Anna Z Urbisz
- Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, University of Silesia in Katowice, Katowice, Poland
| | - Łukasz Chajec
- Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, University of Silesia in Katowice, Katowice, Poland
| | - Karol Małota
- Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, University of Silesia in Katowice, Katowice, Poland
| | - Sebastian Student
- Institute of Automatic Control, Silesian University of Technology, Gliwice, Poland
| | - Marta K Sawadro
- Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, University of Silesia in Katowice, Katowice, Poland
| | - Małgorzata A Śliwińska
- Nencki Institute of Experimental Biology of Polish Academy of Sciences, Laboratory of Imaging Tissue Structure and Function, Warsaw, Poland
| | - Piotr Świątek
- Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, University of Silesia in Katowice, Katowice, Poland
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34
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Botchway BOA, Okoye FC, Chen Y, Arthur WE, Fang M. Alzheimer Disease: Recent Updates on Apolipoprotein E and Gut Microbiome Mediation of Oxidative Stress, and Prospective Interventional Agents. Aging Dis 2022; 13:87-102. [PMID: 35111364 PMCID: PMC8782546 DOI: 10.14336/ad.2021.0616] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/16/2021] [Indexed: 12/11/2022] Open
Abstract
Alzheimer's disease (AD) is a current public health challenge and will remain until the development of an effective intervention. However, developing an effective treatment for the disease requires a thorough understanding of its etiology, which is currently lacking. Although several studies have shown the association between oxidative damage and AD, only a few have clarified the specific mechanisms involved. Herein, we reviewed recent preclinical and clinical studies that indicated the significance of oxidative damage in AD, as well as potential antioxidants. Although several factors regulate oxidative stress in AD, we centered our investigation on apolipoprotein E and the gut microbiome. Apolipoprotein E, particularly apolipoprotein E-ε4, can impair the structural facets of the mitochondria. This, in turn, can minimize the mitochondrial functionality and result in the progressive build-up of free radicals, eventually leading to oxidative stress. Similarly, the gut microbiome can influence oxidative stress to a significant degree via its metabolite, trimethylamine N-oxide. Given the various roles of these two factors in modulating oxidative stress, we also discuss the possible relationship between them and provide future research directions.
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Affiliation(s)
- Benson OA Botchway
- Gastroenterology Department, Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children’s Regional Medical Center, Hangzhou, China
- College of Medicine, Zhejiang University, Hangzhou, China
- Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, China.
| | - Favour C Okoye
- College of Medicine, Zhejiang University, Hangzhou, China
| | - Yili Chen
- Neurosurgery Department, Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, China
| | - William E Arthur
- Department of Internal Medicine, Eastern Regional Hospital, Koforidua, Ghana
| | - Marong Fang
- Gastroenterology Department, Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children’s Regional Medical Center, Hangzhou, China
- Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, China.
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35
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Collins AE, Saleh TM, Kalisch BE. Naturally Occurring Antioxidant Therapy in Alzheimer's Disease. Antioxidants (Basel) 2022; 11:213. [PMID: 35204096 PMCID: PMC8868221 DOI: 10.3390/antiox11020213] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/17/2022] [Accepted: 01/19/2022] [Indexed: 02/06/2023] Open
Abstract
It is estimated that the prevalence rate of Alzheimer's disease (AD) will double by the year 2040. Although currently available treatments help with symptom management, they do not prevent, delay the progression of, or cure the disease. Interestingly, a shared characteristic of AD and other neurodegenerative diseases and disorders is oxidative stress. Despite profound evidence supporting the role of oxidative stress in the pathogenesis and progression of AD, none of the currently available treatment options address oxidative stress. Recently, attention has been placed on the use of antioxidants to mitigate the effects of oxidative stress in the central nervous system. In preclinical studies utilizing cellular and animal models, natural antioxidants showed therapeutic promise when administered alone or in combination with other compounds. More recently, the concept of combination antioxidant therapy has been explored as a novel approach to preventing and treating neurodegenerative conditions that present with oxidative stress as a contributing factor. In this review, the relationship between oxidative stress and AD pathology and the neuroprotective role of natural antioxidants from natural sources are discussed. Additionally, the therapeutic potential of natural antioxidants as preventatives and/or treatment for AD is examined, with special attention paid to natural antioxidant combinations and conjugates that are currently being investigated in human clinical trials.
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Affiliation(s)
| | | | - Bettina E. Kalisch
- Department of Biomedical Sciences and Collaborative Specialization in Neuroscience Program, University of Guelph, Guelph, ON N1G 2W1, Canada; (A.E.C.); (T.M.S.)
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36
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Nguyen CD, Yoo J, Hwang SY, Cho SY, Kim M, Jang H, No KO, Shin JC, Kim JH, Lee G. Bee Venom Activates the Nrf2/HO-1 and TrkB/CREB/BDNF Pathways in Neuronal Cell Responses against Oxidative Stress Induced by Aβ 1-42. Int J Mol Sci 2022; 23:ijms23031193. [PMID: 35163115 PMCID: PMC8835940 DOI: 10.3390/ijms23031193] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/16/2022] [Accepted: 01/18/2022] [Indexed: 02/04/2023] Open
Abstract
Honeybee venom has recently been considered an anti-neurodegenerative agent, primarily due to its anti-inflammatory effects. The natural accumulation of amyloid-beta (Aβ) in the brain is reported to be the natural cause of aging neural ability downfall, and oxidative stress is the main route by which Aβ ignites its neural toxicity. Anti-neural oxidative stress is considered an effective approach for neurodegenerative therapy. To date, it is unclear how bee venom ameliorates neuronal cells in oxidative stress induced by Aβ. Here, we evaluated the neuroprotective effect of bee venom on Aβ-induced neural oxidative stress in both HT22 cells and an animal model. Our results indicate that bee venom protected HT22 cells against apoptosis induced by Aβ1–42. This protective effect was explained by the increased nuclear translocation of nuclear factor erythroid 2-like 2 (Nrf2), consequently upregulating the production of heme oxygenase-1 (HO-1), a critical cellular instinct antioxidant enzyme that neutralizes excessive oxidative stress. Furthermore, bee venom treatment activated the tropomyosin-related kinase receptor B (TrkB)/cAMP response element-binding (CREB)/brain-derived neurotrophic factor (BDNF), which is closely related to the promotion of cellular antioxidant defense and neuronal functions. A mouse model with cognitive deficits induced by Aβ1–42 intracerebroventricular (ICV) injections was also used. Bee venom enhanced animal cognitive ability and enhanced neural cell genesis in the hippocampal dentate gyrus region in a dose-dependent manner. Further analysis of animal brain tissue and serum confirmed that bee venom reduced oxidative stress, cholinergic system activity, and intercellular neurotrophic factor regulation, which were all adversely affected by Aβ1–42. Our study demonstrates that bee venom exerts antioxidant and neuroprotective actions against neural oxidative stress caused by Aβ1–42, thereby promoting its use as a therapeutic agent for neurodegenerative disorders.
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Affiliation(s)
- Cong Duc Nguyen
- College of Korean Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (C.D.N.); (S.-Y.H.); (S.-Y.C.); (M.K.); (H.J.); (K.O.N.)
| | - Jaehee Yoo
- Department of Acupuncture and Moxibustion Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (J.Y.); (J.C.S.)
- Dongshin University Gwangju Korean Medicine Hospital, 141 Wolsan-ro Nam-gu, Gwangju 61619, Korea
| | - Sun-Young Hwang
- College of Korean Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (C.D.N.); (S.-Y.H.); (S.-Y.C.); (M.K.); (H.J.); (K.O.N.)
| | - Sung-Young Cho
- College of Korean Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (C.D.N.); (S.-Y.H.); (S.-Y.C.); (M.K.); (H.J.); (K.O.N.)
| | - Myeonghun Kim
- College of Korean Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (C.D.N.); (S.-Y.H.); (S.-Y.C.); (M.K.); (H.J.); (K.O.N.)
| | - Hyemin Jang
- College of Korean Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (C.D.N.); (S.-Y.H.); (S.-Y.C.); (M.K.); (H.J.); (K.O.N.)
| | - Kyoung Ok No
- College of Korean Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (C.D.N.); (S.-Y.H.); (S.-Y.C.); (M.K.); (H.J.); (K.O.N.)
| | - Jeong Cheol Shin
- Department of Acupuncture and Moxibustion Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (J.Y.); (J.C.S.)
- Dongshin University Mokpo Korean Medicine Hospital, 313 Baengnyeon-daero, Mokpo 58665, Korea
| | - Jae-Hong Kim
- Department of Acupuncture and Moxibustion Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (J.Y.); (J.C.S.)
- Dongshin University Gwangju Korean Medicine Hospital, 141 Wolsan-ro Nam-gu, Gwangju 61619, Korea
- Correspondence: (J.-H.K.); (G.L.)
| | - Gihyun Lee
- College of Korean Medicine, Dongshin University, 67 Dongshindae-gil, Naju 58245, Korea; (C.D.N.); (S.-Y.H.); (S.-Y.C.); (M.K.); (H.J.); (K.O.N.)
- Correspondence: (J.-H.K.); (G.L.)
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37
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Electroacupuncture Relieves Hippocampal Injury by Heme Oxygenase-1 to Improve Mitochondrial Function. J Surg Res 2022; 273:15-23. [PMID: 35016152 DOI: 10.1016/j.jss.2021.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 11/02/2021] [Accepted: 12/15/2021] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Electroacupuncture (EA) treatment has been demonstrated to have the potential to prevent sepsis-induced hippocampal injury; however, the mechanisms underlying the protective effects of EA against such injury remain unclear. Herein, to elucidate these mechanisms, we constructed a mouse model of lipopolysaccharide (LPS)-induced hippocampal injury to investigate the protection mechanism of EA and to determine whether heme oxygenase-1 (HO-1)-mediated mitochondrial function is involved in the protective effect of EA. MATERIALS AND METHODS The sepsis model of hippocampal injury was induced by administering LPS. The Zusanli and Baihui acupoints were stimulated using EA for 30 min once a day, for 5 d before LPS exposure and the first day after administering LPS. Hippocampal injury was investigated by hematoxylin and eosin staining and Nissl staining. HO-1 levels were measured using Western blotting. Mitochondrial metabolism was validated by assessing adenosine triphosphate, superoxide dismutase, malondialdehyde levels, reactive oxygen species production, and mitochondrial respiratory chain activity. Mitochondrial morphology was analyzed by transmission electron microscopy. RESULTS EA treatment alleviated neuronal injury, impeded oxidative stress, and improved mitochondrial respiratory function, energy metabolism, and mitochondrial morphology in LPS-exposed mice. In addition, HO-1 knockout aggravated LPS-induced hippocampal injury, aggravated oxidative stress, and reduced mitochondrial respiratory function and aggravated mitochondrial swelling, crest relaxation, and vacuole degeneration. Moreover, EA was unable to reverse the hippocampal damage and mitochondrial dysfunction caused by LPS exposure after HO-1 knockout. CONCLUSIONS EA improves LPS-induced hippocampal injury by regulating HO-1-mediated mitochondrial function. Furthermore, HO-1 plays a critical role in maintaining mitochondrial function and resisting oxidative injury.
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38
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Afroz SF, Condon ND, Sweet MJ, Kapetanovic R. Quantifying Regulated Mitochondrial Fission in Macrophages. Methods Mol Biol 2022; 2523:281-301. [PMID: 35759204 DOI: 10.1007/978-1-0716-2449-4_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Mitochondria have co-evolved with eukaryotic cells for more than a billion years, becoming an important cog in their machinery. They are best known for being tasked with energy generation through the production of adenosine triphosphate, but they also have roles in several other cellular processes, for example, immune and inflammatory responses. Mitochondria have important functions in macrophages, key innate immune cells that detect pathogens and drive inflammation. Mitochondrial activity is influenced by the highly dynamic nature of the mitochondrial network, which alternates between interconnected tubular and fragmented forms. The dynamic balance between this interconnected fused network and fission-mediated mitochondrial fragmentation modulates inflammatory responses such as production of cytokines and mitochondrial reactive oxygen species. Here we describe methods to differentiate mouse bone marrow cells into macrophages and the use of light microscopy, electron microscopy, flow cytometry, and Western blotting to quantify regulated mitochondrial dynamics in these differentiated macrophages.
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Affiliation(s)
- Syeda Farhana Afroz
- Institute for Molecular Bioscience (IMB), The University of Queensland, Brisbane, QLD, Australia
- IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Nicholas D Condon
- Institute for Molecular Bioscience (IMB), The University of Queensland, Brisbane, QLD, Australia
| | - Matthew J Sweet
- Institute for Molecular Bioscience (IMB), The University of Queensland, Brisbane, QLD, Australia.
- IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD, Australia.
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia.
| | - Ronan Kapetanovic
- Institute for Molecular Bioscience (IMB), The University of Queensland, Brisbane, QLD, Australia.
- IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD, Australia.
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia.
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland.
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39
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Gao Z, Zhang R, Jiang L, Zhou H, Wang Q, Ma Y, Zhang D, Qin Y, Tian P, Zhang N, Shi Z, Xu S. Administration of miR-195 Inhibitor Enhances Memory Function Through Improving Synaptic Degradation and Mitochondrial Dysfunction of the Hippocampal Neurons in SAMP8 Mice. J Alzheimers Dis 2021; 85:1495-1509. [PMID: 34924391 DOI: 10.3233/jad-215301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Mitochondrial dysfunction is an early feature of Alzheimer's disease (AD) and miR-195 is involved in mitochondrial disorder through targeting MFN-2 protein in hippocampal neurons of AD. OBJECTIVE To clarify if administration of miR-195 inhibitor could enhance the memory deficits through improving hippocampal neuron mitochondrial dysfunction in SAMP8 mice. METHODS The expression of miR-195 was detected by RT-qPCR in primary hippocampal neurons and HT-22 cells treated with Aβ 1-42. Morris water maze (MWM) was used to assess the learning and memory function in SAMP8 mice administrated with antagomir-195. Transmission electron microscopy was employed to determine the morphological changes of synapses and mitochondria of hippocampus in SAMP8 mice. Mitochondrial respiration was measured using a high-resolution oxygraph. RESULTS The expression of miR-195 were upregulated in the primary hippocampal neurons and HT-22 cells induced by Aβ 1-42. Inhibition of miR-195 ameliorated the mitochondrial dysfunction in HT-22 cells induced by Aβ 1-42, including mitochondrial morphologic damages, mitochondrial membrane potential, respiration function, and ATP production. Administration of antagomir-195 by the third ventricle injection markedly ameliorated the cognitive function, postsynaptic density thickness, length of synaptic active area, mitochondrial aspect ratio, and area in hippocampus of SAMP8 mice. Finally, antagomir-195 was able to promote an increase in the activity of respiratory chain complex CI and II in SAMP8 mice. CONCLUSION This study demonstrated that miR-195 inhibitor ameliorated the cognitive impairment of AD mice by improving mitochondrial structure damages and dysfunction in the hippocampal neurons, which provide an experimental basis for further exploring the treatment strategy of AD.
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Affiliation(s)
- Zhaoyu Gao
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Rui Zhang
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Lei Jiang
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Huimin Zhou
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China.,Department of Endocrinology, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China
| | - Qian Wang
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China
| | - Yingxin Ma
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Di Zhang
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Yushi Qin
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Pei Tian
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Nan Zhang
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Zhongli Shi
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
| | - Shunjiang Xu
- Central Laboratory, The First Hospital of Hebei Medical University, Shijiazhuang, P. R. China.,Hebei International Joint Research Center for Brain Science, Shijiazhuang, P. R. China.,Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease, Shijiazhuang, P. R. China
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40
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Zhao Y, Jiang Q, Zhang X, Zhu X, Dong X, Shen L, Zhang S, Niu L, Chen L, Zhang M, Jiang J, Chen D, Zhu L. l-Arginine Alleviates LPS-Induced Oxidative Stress and Apoptosis via Activating SIRT1-AKT-Nrf2 and SIRT1-FOXO3a Signaling Pathways in C2C12 Myotube Cells. Antioxidants (Basel) 2021; 10:antiox10121957. [PMID: 34943060 PMCID: PMC8750292 DOI: 10.3390/antiox10121957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/04/2021] [Accepted: 12/06/2021] [Indexed: 12/27/2022] Open
Abstract
l-arginine (l-Arg) has been reported to possess a wide range of functions, including anti-inflammatory, anti-oxidative, and anti-apoptosis. However, the role of l-Arg in LPS-induced muscle injury and its potential protective mechanism has not been well elucidated. This study aimed to investigate the effects of l-Arg on the LPS-induced oxidative stress and apoptosis in differentiated C2C12 myotube cells. Our results demonstrated that myotube cells treated with 0.2 mg/mL LPS significantly decreased cell viability. l-Arg treatment significantly suppressed LPS induced ROS accumulation and cell apoptosis. Furthermore, l-Arg improved antioxidant-related enzymes’ activities; increased antioxidant ability via Akt-Nrf2 signaling pathway; maintained the mitochondrial membrane potential (MMP); and enhanced FOXO3a expression, leading to a decrease in the mitochondrial-associated apoptotic proteins. In addition, l-Arg exposure dramatically increased the mRNA and protein expressions of SIRT1. The cytoprotective effect of l-Arg was restricted by the SIRT1 inhibitor EX527, which led to an increase in ROS level, apoptosis rate, and decreased cell MMP. The results also demonstrated that EX527 treatment significantly eliminated the effect of l-Arg on LPS-induced oxidative damage and mitochondria-mediated cell apoptosis. Our findings revealed that l-Arg could be used as a potential nutraceutical in reducing muscle injury via regulating SIRT1-Akt-Nrf2 and SIRT1-FOXO3a-mitochondria apoptosis signaling pathways.
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Affiliation(s)
- Ye Zhao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Qin Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Xuefei Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Xiaoxiao Zhu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Xia Dong
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Linyuan Shen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Shunhua Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Lili Niu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Lei Chen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Ming Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Jun Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Daiwen Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Ya’an 625014, China
- Correspondence: (D.C.); (L.Z.)
| | - Li Zhu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
- Correspondence: (D.C.); (L.Z.)
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41
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Wang D, Cao L, Pan S, Wang G, Wang L, Cao N, Hao X. Sirt3-mediated mitochondrial dysfunction is involved in fluoride-induced cognitive deficits. Food Chem Toxicol 2021; 158:112665. [PMID: 34780879 DOI: 10.1016/j.fct.2021.112665] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/17/2021] [Accepted: 11/04/2021] [Indexed: 01/11/2023]
Abstract
Excessive fluoride is capable of inducing cognitive deficits, but the mechanisms remain elusive. This study aimed to investigate the effects and underlying mechanisms of fluoride on mitochondrial dysfunction and neurobiological alterations, as well as cognitive impairment. C57BL/6 mice were orally administered 25, 50, and 100 mg/L NaF for 90 days. Cultured human neuroblastoma SH-SY5Y cells were exposed to NaF (110 mg/L) for 24 h in the presence or absence of Sirt3 overexpression. The results demonstrated that chronic exposure to high fluoride induced cognitive deficits and neural/synaptic injury in mice. Fluoride reduced mitochondrial antioxidant enzyme activities and elevated SOD2 acetylation by downregulating Sirt3 expression in the brains of mice and NaF-treated SH-SY5Y cells. Moreover, fluoride lowered mtDNA transcription and induced mitochondrial dysfunction along with increased FoxO3A acetylation in the brains of mice and NaF-treated SH-SY5Y cells. Subsequent experiments revealed that overexpression of Sirt3 significantly attenuated the adverse effects of fluoride on radical scavenging capabilities and mtDNA transcription, as well as mitochondrial function in SH-SY5Y cells. These results suggest that chronic long-term fluoride exposure evokes neural/synaptic injury and cognitive impairment through mitochondrial dysfunction and its associated oxidative stress, which is, at least partly, mediated by Sirt3 inhibition in the mouse brain.
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Affiliation(s)
- Dongmei Wang
- School of Basic Medical Sciences, Henan University of Science and Technology, Henan, Luoyang, 471003, China.
| | - Luyang Cao
- School of Basic Medical Sciences, Henan University of Science and Technology, Henan, Luoyang, 471003, China
| | - Shunji Pan
- School of Basic Medical Sciences, Henan University of Science and Technology, Henan, Luoyang, 471003, China
| | - Gang Wang
- School of Basic Medical Sciences, Henan University of Science and Technology, Henan, Luoyang, 471003, China
| | - Lewei Wang
- School of Basic Medical Sciences, Henan University of Science and Technology, Henan, Luoyang, 471003, China
| | - Ningyao Cao
- School of Basic Medical Sciences, Henan University of Science and Technology, Henan, Luoyang, 471003, China
| | - Xueqin Hao
- School of Basic Medical Sciences, Henan University of Science and Technology, Henan, Luoyang, 471003, China
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42
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Sarmiento-Salinas FL, Perez-Gonzalez A, Acosta-Casique A, Ix-Ballote A, Diaz A, Treviño S, Rosas-Murrieta NH, Millán-Perez-Peña L, Maycotte P. Reactive oxygen species: Role in carcinogenesis, cancer cell signaling and tumor progression. Life Sci 2021; 284:119942. [PMID: 34506835 DOI: 10.1016/j.lfs.2021.119942] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/27/2021] [Accepted: 09/01/2021] [Indexed: 02/07/2023]
Abstract
Cancer is one of the major causes of death in the world and its global burden is expected to continue increasing. In several types of cancers, reactive oxygen species (ROS) have been extensively linked to carcinogenesis and cancer progression. However, studies have reported conflicting evidence regarding the role of ROS in cancer, mostly dependent on the cancer type or the step of the tumorigenic process. We review recent studies describing diverse aspects of the interplay of ROS with cancer in the different stages of cancer progression, with a special focus on their role in carcinogenesis, their importance for cancer cell signaling and their relationship to the most prevalent cancer risk factors.
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Affiliation(s)
- Fabiola Lilí Sarmiento-Salinas
- Centro de Investigación Biomédica de Oriente (CIBIOR), Instituto Mexicano del Seguro Social (IMSS), Atlixco, Puebla, Mexico; Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Andrea Perez-Gonzalez
- Centro de Investigación Biomédica de Oriente (CIBIOR), Instituto Mexicano del Seguro Social (IMSS), Atlixco, Puebla, Mexico; Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Adilene Acosta-Casique
- Centro de Investigación Biomédica de Oriente (CIBIOR), Instituto Mexicano del Seguro Social (IMSS), Atlixco, Puebla, Mexico; Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Adrián Ix-Ballote
- Centro de Investigación Biomédica de Oriente (CIBIOR), Instituto Mexicano del Seguro Social (IMSS), Atlixco, Puebla, Mexico; Posgrado en Ciencias y Tecnologías Biomédicas, Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, Mexico
| | - Alfonso Diaz
- Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Samuel Treviño
- Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | | | | | - Paola Maycotte
- Centro de Investigación Biomédica de Oriente (CIBIOR), Instituto Mexicano del Seguro Social (IMSS), Atlixco, Puebla, Mexico.
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43
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Nguyen CD, Lee G. Neuroprotective Activity of Melittin-The Main Component of Bee Venom-Against Oxidative Stress Induced by Aβ 25-35 in In Vitro and In Vivo Models. Antioxidants (Basel) 2021; 10:antiox10111654. [PMID: 34829525 PMCID: PMC8614890 DOI: 10.3390/antiox10111654] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/09/2021] [Accepted: 10/18/2021] [Indexed: 11/23/2022] Open
Abstract
Melittin, a 26-amino acid peptide, is the main component of the venom of four honeybee species and exhibits neuroprotective actions. However, it is unclear how melittin ameliorates neuronal cells in oxidative stress and how it affects memory impairment in an in vivo model. We evaluated the neuroprotective effect of melittin on Aβ25–35-induced neuro-oxidative stress in both in vitro HT22 cells and in vivo animal model. Melittin effectively protected against HT22 cell viability and significantly deregulated the Aβ25–35-induced overproduction of intracellular reactive oxygen species. Western blot analysis showed that melittin suppressed cell apoptosis and regulated Bax/Bcl-2 ratio, as well as the expression of proapoptotic related factors: Apoptosis-inducing factor (AIF), Calpain, Cytochrome c (CytoC), Cleaved caspase-3 (Cleacas3). Additionally, melittin enhanced the antioxidant defense pathway by regulating the nuclear translocation of nuclear factor erythroid 2-like 2 (Nrf2) thus upregulated the production of the heme oxygenase-1 (HO-1), a major cellular antioxidant enzyme combating neuronal oxidative stress. Furthermore, melittin treatment activated the Tropomyosin-related kinase receptor B (TrkB)/cAMP Response Element-Binding (CREB)/Brain-derived neurotrophic factor (BDNF), contributing to neuronal neurogenesis, and regulating the normal function of synapses in the brain. In our in vivo experiment, melittin was shown to enhance the depleted learning and memory ability, a novel finding. A mouse model with cognitive deficits induced by Aβ25–35 intracerebroventricular injection was used. Melittin had dose-dependently enhanced neural-disrupted animal behavior and enhanced neurogenesis in the dentate gyrus hippocampal region. Further analysis of mouse brain tissue and serum confirmed that melittin enhanced oxidant–antioxidant balance, cholinergic system activity, and intercellular neurotrophic factors regulation, which were all negatively altered by Aβ25–35. Our study shows that melittin exerts antioxidant and neuroprotective actions against neural oxidative stress. Melittin can be a potential therapeutic agent for neurodegenerative disorders.
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44
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Tracy EP, Hughes W, Beare JE, Rowe G, Beyer A, LeBlanc AJ. Aging-Induced Impairment of Vascular Function: Mitochondrial Redox Contributions and Physiological/Clinical Implications. Antioxid Redox Signal 2021; 35:974-1015. [PMID: 34314229 PMCID: PMC8905248 DOI: 10.1089/ars.2021.0031] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Significance: The vasculature responds to the respiratory needs of tissue by modulating luminal diameter through smooth muscle constriction or relaxation. Coronary perfusion, diastolic function, and coronary flow reserve are drastically reduced with aging. This loss of blood flow contributes to and exacerbates pathological processes such as angina pectoris, atherosclerosis, and coronary artery and microvascular disease. Recent Advances: Increased attention has recently been given to defining mechanisms behind aging-mediated loss of vascular function and development of therapeutic strategies to restore youthful vascular responsiveness. The ultimate goal aims at providing new avenues for symptom management, reversal of tissue damage, and preventing or delaying of aging-induced vascular damage and dysfunction in the first place. Critical Issues: Our major objective is to describe how aging-associated mitochondrial dysfunction contributes to endothelial and smooth muscle dysfunction via dysregulated reactive oxygen species production, the clinical impact of this phenomenon, and to discuss emerging therapeutic strategies. Pathological changes in regulation of mitochondrial oxidative and nitrosative balance (Section 1) and mitochondrial dynamics of fission/fusion (Section 2) have widespread effects on the mechanisms underlying the ability of the vasculature to relax, leading to hyperconstriction with aging. We will focus on flow-mediated dilation, endothelial hyperpolarizing factors (Sections 3 and 4), and adrenergic receptors (Section 5), as outlined in Figure 1. The clinical implications of these changes on major adverse cardiac events and mortality are described (Section 6). Future Directions: We discuss antioxidative therapeutic strategies currently in development to restore mitochondrial redox homeostasis and subsequently vascular function and evaluate their potential clinical impact (Section 7). Antioxid. Redox Signal. 35, 974-1015.
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Affiliation(s)
- Evan Paul Tracy
- Department of Physiology, University of Louisville, Louisville, Kentucky, USA
| | - William Hughes
- Department of Medicine and Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Jason E Beare
- Cardiovascular Innovation Institute, University of Louisville, Louisville, Kentucky, USA.,Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, Kentucky, USA
| | - Gabrielle Rowe
- Department of Physiology, University of Louisville, Louisville, Kentucky, USA
| | - Andreas Beyer
- Department of Medicine and Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Amanda Jo LeBlanc
- Department of Physiology, University of Louisville, Louisville, Kentucky, USA.,Cardiovascular Innovation Institute, University of Louisville, Louisville, Kentucky, USA
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45
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Ghosh P, Singh R, Ganeshpurkar A, Pokle AV, Singh RB, Singh SK, Kumar A. Cellular and molecular influencers of neuroinflammation in Alzheimer's disease: Recent concepts & roles. Neurochem Int 2021; 151:105212. [PMID: 34656693 DOI: 10.1016/j.neuint.2021.105212] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 09/22/2021] [Accepted: 10/10/2021] [Indexed: 01/21/2023]
Abstract
Alzheimer's disease (AD), an extremely common neurodegenerative disorder of the older generation, is one of the leading causes of death globally. Besides the conventional hallmarks i.e. Amyloid-β (Aβ) plaques and neurofibrillary tangles (NFTs), neuroinflammation also serves as a major contributing factor in the pathogenesis of AD. There are mounting evidences to support the fundamental role of cellular (microglia, astrocytes, mast cells, and T-cells) and molecular (cytokines, chemokines, caspases, and complement proteins) influencers of neuroinflammation in producing/promoting neurodegeneration and dementia in AD. Genome-wide association studies (GWAS) have revealed the involvement of various single nucleotide polymorphisms (SNPs) of genes related to neuroinflammation with the risk of developing AD. Modulating the release of the neuroinflammatory molecules and targeting their relevant mechanisms may have beneficial effects on the onset, progress and severity of the disease. Here, we review the distinct role of various mediators and modulators of neuroinflammation that impact the pathogenesis and progression of AD as well as incite further research efforts for the treatment of AD through a neuroinflammatory approach.
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Affiliation(s)
- Powsali Ghosh
- Pharmaceutical Chemistry Research Laboratory 1, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Ravi Singh
- Pharmaceutical Chemistry Research Laboratory 1, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Ankit Ganeshpurkar
- Pharmaceutical Chemistry Research Laboratory 1, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Ankit Vyankatrao Pokle
- Pharmaceutical Chemistry Research Laboratory 1, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Ravi Bhushan Singh
- Institute of Pharmacy Harischandra PG College, Bawanbigha, Varanasi, India
| | - Sushil Kumar Singh
- Pharmaceutical Chemistry Research Laboratory 1, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Ashok Kumar
- Pharmaceutical Chemistry Research Laboratory 1, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India.
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46
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Ding Q, Qi Y, Tsang SY. Mitochondrial Biogenesis, Mitochondrial Dynamics, and Mitophagy in the Maturation of Cardiomyocytes. Cells 2021; 10:cells10092463. [PMID: 34572112 PMCID: PMC8466139 DOI: 10.3390/cells10092463] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/09/2021] [Accepted: 09/15/2021] [Indexed: 01/01/2023] Open
Abstract
Pluripotent stem cells (PSCs) can undergo unlimited self-renewal and can differentiate into all the cell types present in our body, including cardiomyocytes. Therefore, PSCs can be an excellent source of cardiomyocytes for future regenerative medicine and medical research studies. However, cardiomyocytes obtained from PSC differentiation culture are regarded as immature structurally, electrophysiologically, metabolically, and functionally. Mitochondria are organelles responsible for various cellular functions such as energy metabolism, different catabolic and anabolic processes, calcium fluxes, and various signaling pathways. Cells can respond to cellular needs to increase the mitochondrial mass by mitochondrial biogenesis. On the other hand, cells can also degrade mitochondria through mitophagy. Mitochondria are also dynamic organelles that undergo continuous fusion and fission events. In this review, we aim to summarize previous findings on the changes of mitochondrial biogenesis, mitophagy, and mitochondrial dynamics during the maturation of cardiomyocytes. In addition, we intend to summarize whether changes in these processes would affect the maturation of cardiomyocytes. Lastly, we aim to discuss unanswered questions in the field and to provide insights for the possible strategies of enhancing the maturation of PSC-derived cardiomyocytes.
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Affiliation(s)
- Qianqian Ding
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China;
| | - Yanxiang Qi
- State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China;
| | - Suk-Ying Tsang
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China;
- State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China;
- Key Laboratory for Regenerative Medicine, Ministry of Education, The Chinese University of Hong Kong, Hong Kong, China
- The Institute for Tissue Engineering and Regenerative Medicine (iTERM), The Chinese University of Hong Kong, Hong Kong, China
- Correspondence: ; Tel.: +852-39431020
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47
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Surinkaew P, Apaijai N, Sawaddiruk P, Jaiwongkam T, Kerdphoo S, Chattipakorn N, Chattipakorn SC. Mitochondrial Fusion Promoter Alleviates Brain Damage in Rats with Cardiac Ischemia/Reperfusion Injury. J Alzheimers Dis 2021; 77:993-1003. [PMID: 32804148 DOI: 10.3233/jad-200495] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Cardiac ischemia/reperfusion (I/R) injury induces brain damage through increased blood-brain barrier (BBB) breakdown, microglial hyperactivity, pro-inflammatory cytokines, amyloid-β deposition, loss of dendritic spines, brain mitochondrial dysfunction, and imbalanced mitochondrial dynamics. Previous studies demonstrated that mitochondrial fusion promoter reduced cardiac damage from cardiac I/R injury; however, following cardiac I/R injury, the roles of mitochondrial dynamics on the brain have not been investigated. OBJECTIVE To investigate the effects of pharmacological modulation using mitochondrial fusion promoter (M1) in the brain of rats following cardiac I/R injury. METHODS Twenty-four male Wistar rats were separated into two groups; 1) sham-operation (n = 8) and 2) cardiac I/R injury (n = 16). Rats in the cardiac I/R injury group were randomly received either normal saline solution as a vehicle or a mitochondrial fusion promoter (M1, 2 mg/kg) intravenously. Both treatments were given to the rats 15 minutes before cardiac I/R injury. At the end of the reperfusion protocol, the brain was rapidly removed to investigate brain mitochondrial function, mitochondrial dynamics proteins, microglial activity, and Alzheimer's disease (AD) related proteins. RESULTS Cardiac I/R injury induced brain mitochondrial dynamics imbalance as indicated by reduced mitochondrial fusion proteins expression without alteration in mitochondrial fission, brain mitochondrial dysfunction, BBB breakdown, increased macrophage infiltration, apoptosis, and AD-related proteins. Pretreatment with M1 effectively increased the expression of mitofusin 2, a mitochondrial outer membrane fusion protein, reduced brain mitochondrial dysfunction, BBB breakdown, macrophage infiltration, apoptosis, and AD-related proteins in rats following cardiac I/R injury. CONCLUSION This mitochondrial fusion promoter significantly protected rats with cardiac I/R injury against brain damage.
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Affiliation(s)
- Poomarin Surinkaew
- Department of Anesthesiology, Lamphun Hospital, Lamphun, Thailand.,Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Nattayaporn Apaijai
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Passakorn Sawaddiruk
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand.,Department of Anesthesiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Thidarat Jaiwongkam
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Sasiwan Kerdphoo
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand.,Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand.,Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
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48
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Fealy CE, Grevendonk L, Hoeks J, Hesselink MKC. Skeletal muscle mitochondrial network dynamics in metabolic disorders and aging. Trends Mol Med 2021; 27:1033-1044. [PMID: 34417125 DOI: 10.1016/j.molmed.2021.07.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/13/2021] [Accepted: 07/26/2021] [Indexed: 01/05/2023]
Abstract
With global demographics trending towards an aging population, the numbers of individuals with an age-associated loss of independence is increasing. A key contributing factor is loss of skeletal muscle mitochondrial, metabolic, and contractile function. Recent advances in imaging technologies have demonstrated the importance of mitochondrial morphology and dynamics in the pathogenesis of disease. In this review, we examine the evidence for altered mitochondrial dynamics as a mechanism in age and obesity-associated loss of skeletal muscle function, with a particular focus on the available human data. We highlight some of the areas where more data are needed to identify the specific mechanisms connecting mitochondrial morphology and skeletal muscle dysfunction.
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Affiliation(s)
- Ciarán E Fealy
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands; Department of Physical Education and Sport Sciences, University of Limerick, Castletroy, Limerick, Ireland
| | - Lotte Grevendonk
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Joris Hoeks
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Matthijs K C Hesselink
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.
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49
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Hu YR, Xing SL, Chen C, Shen DZ, Chen JL. Codonopsis pilosula Polysaccharides Alleviate Aβ 1-40-Induced PC12 Cells Energy Dysmetabolism via CD38/NAD+ Signaling Pathway. Curr Alzheimer Res 2021; 18:208-221. [PMID: 34102973 PMCID: PMC8506921 DOI: 10.2174/1567205018666210608103831] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 03/16/2021] [Accepted: 04/21/2021] [Indexed: 11/22/2022]
Abstract
Background Alzheimer's disease (AD) is the most common type of dementia and has a complex pathogenesis with no effective treatment. Energy metabolism disorders, as an early pathological event of AD,have attracted attention as a promising area of AD research. Codonopsis pilosula Polysaccharides are the main effective components of Codonopsis pilosula, which have been demonstrated to regulate energy metabolism. Methods In order to further study the roles and mechanisms of Codonopsis pilosula polysaccharides in AD, this study used an Aβ1-40-induced PC12 cells model to study the protective effects of Codonopsis pilosula polysaccharides and their potential mechanisms in improving energy metabolism dysfunction. Results The results showed that Aβ1-40 induced a decrease in PC12 cells viability, energy metabolism molecules (ATP, NAD+, and NAD+/NADH) and Mitochondrial Membrane Potential (MMP) and an increase in ROS. Additionally, it was found that Aβ1-40 increased CD38 expression related to NAD+ homeostasis, whereas Silent Information Regulation 2 homolog1 (SIRT1, SIRT3), Peroxisome proliferator-activated receptor γ coactivator 1-α (PGC-1α) and SIRT3 activity were decreased. Codonopsis pilosula polysaccharides increased NAD+, NAD+/NADH, SIRT3, SIRT1, and PGC-1α related to NAD+, thus partially recovering ATP. Conclusion Our findings reveal that Codonopsis pilosula polysaccharides protected PC12 cells from Aβ1-40-induced damage, suggesting that these components of the Codonopsis pilosula herb may represent an early treatment option for AD patients.
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Affiliation(s)
- Yi R Hu
- Shanghai Geriatric Institute of Chinese Medicine, Shanghai 200031, China
| | - San L Xing
- Shanghai Geriatric Institute of Chinese Medicine, Shanghai 200031, China
| | - Chuan Chen
- Shanghai Geriatric Institute of Chinese Medicine, Shanghai 200031, China
| | - Ding Z Shen
- Shanghai Geriatric Institute of Chinese Medicine, Shanghai 200031, China
| | - Jiu L Chen
- Shanghai Geriatric Institute of Chinese Medicine, Shanghai 200031, China
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Issac PK, Guru A, Velayutham M, Pachaiappan R, Arasu MV, Al-Dhabi NA, Choi KC, Harikrishnan R, Arockiaraj J. Oxidative stress induced antioxidant and neurotoxicity demonstrated in vivo zebrafish embryo or larval model and their normalization due to morin showing therapeutic implications. Life Sci 2021; 283:119864. [PMID: 34358548 DOI: 10.1016/j.lfs.2021.119864] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/21/2021] [Accepted: 07/29/2021] [Indexed: 12/30/2022]
Abstract
AIMS The study examined that morin as possible antioxidant and neuroprotective due to oxidative stress (H2O2) in zebrafish larval model. MATERIALS AND METHODS Zebrafish larvae were induced with oxidative stress using H2O2 at 1 mM; their behavioural changes were assessed through partition preference and horizontal compartment test. The head section without eyes and yolk sac of zebrafish larvae were employed for enzyme assays such as SOD, CAT, Thiobarbituric acid reactive substances assay, reduced glutathione, glutathione peroxidase activity, glutathione S transferase, Acetylcholinesterase activity and nitrate levels. Also, intracellular ROS and apoptosis in larval head was detected by DCFDA and acridine orange staining followed by gene expression studies. KEY FINDINGS Morin exposure was not harmful to the larvae at concentration between 20 and 60 μM, but it caused non-lethal deformity between 80 and 100 μM. In the partition test, zebrafish embryos treated with H2O2 showed cognitive impairment, whereas the morin-treated groups showed an improved behavioural activity. The study also found that restoring antioxidant enzymes and reduced lipid peroxidation which had a neuroprotective impact. Inhibition of NO overproduction and increased AChE activity were also shown to reduce the neuronal damage. Apoptosis and intracellular ROS levels were reduced in larvae when it was co-incubated with morin. Morin treatment up regulated the antioxidant enzymes against oxidative stress. SIGNIFICANCE Morin provides protection against H2O2 induced oxidative stress through a cellular antioxidant defence mechanism by up-regulating gene expression, thus increasing the antioxidant activity at cellular or organismal stage.
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Affiliation(s)
- Praveen Kumar Issac
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India
| | - Ajay Guru
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India; Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India
| | - Manikandan Velayutham
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India; Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India
| | - Raman Pachaiappan
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ki Choon Choi
- Grassland and Forage Division, National Institute of Animal Science, RDA, Seonghwan-Eup, Cheonan-Si, Chungnam 330-801, Republic of Korea
| | - Ramasamy Harikrishnan
- Department of Zoology, Pachaiyappa's College for Men, Kanchipuram 631 501, Tamil Nadu, India
| | - Jesu Arockiaraj
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India; Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India.
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