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Rubio-Zarapuz A, Parraca JA, Tornero-Aguilera JF, Clemente-Suárez VJ. Unveiling the link: exploring muscle oxygen saturation in fibromyalgia and its implications for symptomatology and therapeutic strategies. Med Gas Res 2025; 15:58-72. [PMID: 39436169 DOI: 10.4103/mgr.medgasres-d-24-00013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 03/20/2024] [Indexed: 10/23/2024] Open
Abstract
Fibromyalgia, characterized as a complex chronic pain syndrome, presents with symptoms of pervasive musculoskeletal pain, significant fatigue, and pronounced sensitivity at specific anatomical sites. Despite extensive research efforts, the origins of fibromyalgia remain enigmatic. This narrative review explores the intricate relationship between muscle oxygen saturation and fibromyalgia, positing that disruptions in the oxygenation processes within muscle tissues markedly influence the symptom profile of this disorder. Muscle oxygen saturation, crucial for muscle function, has been meticulously investigated in fibromyalgia patients through non-invasive techniques such as near-infrared spectroscopy and magnetic resonance imaging. The body of evidence consistently indicates substantial alterations in oxygen utilization within muscle fibers, manifesting as reduced efficiency in oxygen uptake during both rest and physical activity. These anomalies play a significant role in fibromyalgia's symptomatology, especially in terms of chronic pain and severe fatigue, potentially creating conditions that heighten pain sensitivity and accumulate metabolic byproducts. Hypothesized mechanisms for these findings encompass dysfunctions in microcirculation, mitochondrial irregularities, and autonomic nervous system disturbances, all meriting further research. Understanding the dynamics of muscle oxygen saturation in fibromyalgia is of paramount clinical importance, offering the potential for tailored therapeutic approaches to alleviate symptoms and improve the quality of life for sufferers. This investigation not only opens new avenues for innovative research but also fosters hope for more effective treatment strategies and improved outcomes for individuals with fibromyalgia.
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Affiliation(s)
| | - Jose A Parraca
- Departamento de Desporto e Saúde, Escola de Saúde e Desenvolvimento Humano, Universidade de Évora, Évora, Portugal
- Comprehensive Health Research Centre (CHRC), University of Évora, Évora, Portugal
| | | | - Vicente J Clemente-Suárez
- Faculty of Sports Sciences, Universidad Europea de Madrid, Madrid, Spain
- Grupo de Investigación en Cultura, Educación y Sociedad, Universidad de la Costa, Barranquilla, Colombia
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2
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Zamorano-Cataldo M, Vega-Vásquez I, García-Navarrete C, Toledo J, Bustamante D, Ezquer F, Urra FA, Farfán-Troncoso N, Herrera-Marschitz M, Morales P. Mitochondrial dynamics and sex-specific responses in the developing rat hippocampus: Effect of perinatal asphyxia and mesenchymal stem cell Secretome treatment. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119851. [PMID: 39332539 DOI: 10.1016/j.bbamcr.2024.119851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 08/27/2024] [Accepted: 09/11/2024] [Indexed: 09/29/2024]
Abstract
AIMS Perinatal asphyxia is one of the major causes of neonatal death at birth. Survivors can progress but often suffer from long-term sequelae. We aim to determine the effects of perinatal asphyxia on mitochondrial dynamics and whether mesenchymal stem cell secretome (MSC-S) treatment can alleviate the deleterious effects. MATERIALS AND METHODS Animals were subjected to 21 min of asphyxia at the time of delivery. MSC-S or vehicle was intranasally administered 2 h post-delivery. Mitochondrial mass (D-loop, qPCR), mitochondrial dynamics proteins (Drp1, Fis1 and OPA1, Western blot), mitochondrial dynamics (TOMM20, Immunofluorescence), as well as mitochondrial membrane potential (ΔΨm) (Safranin O) were evaluated at P1 and P7 in the hippocampus. KEY FINDINGS Perinatal asphyxia increased levels of mitochondrial dynamics proteins Drp1 and S-OPA1 at P1 and Fis1 at P7. Mitochondrial density and mass were decreased at P1. Perinatal asphyxia induced sex-specific differences, with increased L-OPA1 in females at P7 and increased mitochondria circularity. In males, asphyxia-exposed animals exhibited a reduced ΔΨm at P7. MSC-S treatment normalised levels of mitochondrial dynamics proteins involved in fission. SIGNIFICANCE This study provides novel insights into the effects of perinatal asphyxia on mitochondrial dynamics in the developing brain and on the therapeutic opportunities provided by mesenchymal stem cell secretome treatment. It also highlights on the relevance of considering sex as a biological variable in perinatal brain injury and therapy development. These findings contribute to the development of targeted, personalised therapies for infants affected by perinatal asphyxia.
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Affiliation(s)
- M Zamorano-Cataldo
- Molecular & Clinical Pharmacology Program, ICBM, Medical Faculty, Universidad de Chile, Chile
| | - I Vega-Vásquez
- Advanced Scientific Equipment Network (REDECA), Medical Faculty, Universidad de Chile, Chile
| | - C García-Navarrete
- Advanced Scientific Equipment Network (REDECA), Medical Faculty, Universidad de Chile, Chile
| | - J Toledo
- Advanced Scientific Equipment Network (REDECA), Medical Faculty, Universidad de Chile, Chile
| | - D Bustamante
- Molecular & Clinical Pharmacology Program, ICBM, Medical Faculty, Universidad de Chile, Chile
| | - F Ezquer
- Center for Regenerative Medicine, Medical Faculty, Clínica Alemana, Universidad del Desarrollo, Chile
| | - F A Urra
- Molecular & Clinical Pharmacology Program, ICBM, Medical Faculty, Universidad de Chile, Chile; Laboratory of Metabolic Plasticity and Bioenergetics, Molecular & Clinical Pharmacology Program, Medical Faculty, Universidad de Chile, Chile; Interdisciplinary Group on Mitochondrial Targeting and Bioenergetics (MIBI), Medical Faculty, Universidad de Chile, Chile
| | - N Farfán-Troncoso
- Molecular & Clinical Pharmacology Program, ICBM, Medical Faculty, Universidad de Chile, Chile.
| | - M Herrera-Marschitz
- Molecular & Clinical Pharmacology Program, ICBM, Medical Faculty, Universidad de Chile, Chile.
| | - P Morales
- Molecular & Clinical Pharmacology Program, ICBM, Medical Faculty, Universidad de Chile, Chile; Department of Neuroscience, Medical Faculty, Universidad de Chile, Chile.
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3
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Bhat AA, Moglad E, Goyal A, Afzal M, Thapa R, Almalki WH, Kazmi I, Alzarea SI, Ali H, Gaur A, Singh TG, Singh SK, Dua K, Gupta G. Nrf2 pathways in neuroprotection: Alleviating mitochondrial dysfunction and cognitive impairment in aging. Life Sci 2024; 357:123056. [PMID: 39277133 DOI: 10.1016/j.lfs.2024.123056] [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: 06/14/2024] [Revised: 08/27/2024] [Accepted: 09/11/2024] [Indexed: 09/17/2024]
Abstract
Mitochondrial dysfunction and cognitive impairment are widespread phenomena among the elderly, being crucial factors that contribute to neurodegenerative diseases. Nuclear factor erythroid 2-related factor 2 (Nrf2) is an important regulator of cellular defense systems, including that against oxidative stress. As such, increased Nrf2 activity may serve as a strategy to avert mitochondrial dysfunction and cognitive decline. Scientific data on Nrf2-mediated neuroprotection was collected from PubMed, Google Scholar, and Science Direct, specifically addressing mitochondrial dysfunction and cognitive impairment in older people. Search terms included "Nrf2", "mitochondrial dysfunction," "cognitive impairment," and "neuroprotection." Studies focusing on in vitro and in vivo models and clinical investigations were included to review Nrf2's therapeutic potential comprehensively. The relative studies have demonstrated that increased Nrf2 activity could improve mitochondrial performance, decrease oxidative pressure, and mitigate cognitive impairment. To a large extent, this is achieved through the modulation of critical cellular signalling pathways such as the Keap1/Nrf2 pathway, mitochondrial biogenesis, and neuroinflammatory responses. The present review summarizes the recent progress in comprehending the molecular mechanisms regarding the neuroprotective benefits mediated by Nrf2 through its substantial role against mitochondrial dysfunction and cognitive impairment. This review also emphasizes Nrf2-target pathways and their contribution to cognitive function improvement and rescue from mitochondria-related abnormalities as treatment strategies for neurodegenerative diseases that often affect elderly individuals.
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Affiliation(s)
- Asif Ahmad Bhat
- Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India
| | - Ehssan Moglad
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Ahsas Goyal
- Institute of Pharmaceutical Research, GLA University, Mathura, U.P., India
| | - Muhammad Afzal
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia
| | - Riya Thapa
- Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, 21589 Jeddah, Saudi Arabia
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, 72341 Sakaka, Al-Jouf, Saudi Arabia
| | - Haider Ali
- Centre for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, India; Department of Pharmacology, Kyrgyz State Medical College, Bishkek, Kyrgyzstan
| | - Ashish Gaur
- Graphic Era (Deemed to be University), Clement Town, Dehradun 248002, India; Graphic Era Hill University, Clement Town, Dehradun 248002, India
| | | | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India; Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia; Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW 2007, Australia
| | - Gaurav Gupta
- Centre for Research Impact & Outcome, Chitkara College of Pharmacy, Chitkara University, Rajpura 140401, Punjab, India; Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates.
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4
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Song BL, Wang JQ, Zhang GX, Yi NB, Zhang YJ, Zhou L, Guan YH, Zhang XH, Zheng WF, Qiao ZY, Wang H. A Coupling-Induced Assembly Strategy for Constructing Artificial Shell on Mitochondria in Living Cells. Angew Chem Int Ed Engl 2024; 63:e202411725. [PMID: 39045805 DOI: 10.1002/anie.202411725] [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: 06/22/2024] [Revised: 07/18/2024] [Accepted: 07/22/2024] [Indexed: 07/25/2024]
Abstract
The strategy of in vivo self-assembly has been developed for improved enrichment and long-term retention of anticancer drug in tumor tissues. However, most self-assemblies with non-covalent bonding interactions are susceptible to complex physiological environments, leading to weak stability and loss of biological function. Here, we develop a coupling-induced assembly (CIA) strategy to generate covalently crosslinked nanofibers, which is applied for in situ constructing artificial shell on mitochondria. The oxidation-responsive peptide-porphyrin conjugate P1 is synthesized, which self-assemble into nanoparticles. Under the oxidative microenvironment of mitochondria, the coupling of thiols in P1 causes the formation of dimers, which is further ordered and stacked into crosslinked nanofibers. As a result, the artificial shell is constructed on the mitochondria efficiently through multivalent cooperative interactions due to the increased binding sites. Under ultrasound (US) irradiation, the porphyrin molecules in the shell produce a large amount of reactive oxygen species (ROS) that act on the adjacent mitochondrial membrane, exhibiting ~2-fold higher antitumor activity than nanoparticles in vitro and in vivo. Therefore, the mitochondria-targeted CIA strategy provides a novel perspective on improved sonodynamic therapy (SDT) and shows potential applications in antitumor therapies.
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Affiliation(s)
- Ben-Li Song
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Jia-Qi Wang
- Harbin Medical University Cancer Hospital, No. 150 Haping Road, Nangang District, Harbin, 150081, China
- NHC and CAMS Key Laboratory of Molecular Probe and Targeted Theranostics, Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin Medical University, Harbin, 150001, China
| | - Guang-Xu Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Ning-Bo Yi
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Ying-Jin Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Lei Zhou
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Ying-Hua Guan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Xue-Hao Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Wen-Fu Zheng
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Zeng-Ying Qiao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Hao Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China
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5
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Thoudam T, Gao H, Jiang Y, Huda N, Yang Z, Ma J, Liangpunsakul S. Mitochondrial quality control in alcohol-associated liver disease. Hepatol Commun 2024; 8:e0534. [PMID: 39445886 DOI: 10.1097/hc9.0000000000000534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Accepted: 07/31/2024] [Indexed: 10/25/2024] Open
Abstract
Excessive alcohol consumption is a leading cause of alcohol-associated liver disease (ALD), a significant global health concern with limited therapeutic options. Understanding the key factors contributing to ALD pathogenesis is crucial for identifying potential therapeutic targets. Central to ALD pathogenesis is the intricate interplay between alcohol metabolism and cellular processes, particularly involving mitochondria. Mitochondria are essential organelles in the liver, critical for energy production and metabolic functions. However, they are particularly vulnerable to alcohol-induced damage due to their involvement in alcohol metabolism. Alcohol disrupts mitochondrial function, impairing ATP production and triggering oxidative stress, which leads to cellular damage and inflammation. Mitochondrial quality control mechanisms, including biogenesis, dynamics, and mitophagy, are crucial for maintaining optimal mitochondrial function. Chronic alcohol consumption disrupts mitochondrial quality control checkpoints, leading to mitochondrial dysfunction that impairs fatty acid oxidation and contributes to hepatic steatosis in ALD. Moreover, alcohol promotes the accumulation of damaged mitochondria and the release of proinflammatory components, exacerbating liver damage and inflammation. Preserving mitochondrial health presents a promising therapeutic approach to mitigate ALD progression. In this review, we provide a comprehensive overview of the effects of alcohol on mitochondrial function and quality control mechanisms, highlighting their role in ALD pathogenesis. Understanding these mechanisms may pave the way for the development of novel therapeutic interventions for ALD.
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Affiliation(s)
- Themis Thoudam
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Hui Gao
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Yanchao Jiang
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Nazmul Huda
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Zhihong Yang
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jing Ma
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Suthat Liangpunsakul
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Roudebush Veterans Administration Medical Center, Indianapolis, Indiana, USA
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6
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Kato Y, Ariyoshi K, Nohara Y, Matsunaga N, Shimauchi T, Shindo N, Nishimura A, Mi X, Kim SG, Ide T, Kawanishi E, Ojida A, Nakashima N, Mori Y, Nishida M. Inhibition of dynamin-related protein 1-filamin interaction improves systemic glucose metabolism. Br J Pharmacol 2024; 181:4328-4347. [PMID: 38986570 DOI: 10.1111/bph.16487] [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: 09/22/2023] [Revised: 05/05/2024] [Accepted: 05/18/2024] [Indexed: 07/12/2024] Open
Abstract
BACKGROUND AND PURPOSE Maintaining mitochondrial quality is attracting attention as a new strategy to treat diabetes and diabetic complications. We previously reported that mitochondrial hyperfission by forming a protein complex between dynamin-related protein (Drp) 1 and filamin, mediates chronic heart failure and cilnidipine, initially developed as an L/N-type Ca2+ channel blocker, improves heart failure by inhibiting Drp1-filamin protein complex. We investigated whether cilnidipine improves hyperglycaemia of various diabetic mice models. EXPERIMENTAL APPROACH Retrospective analysis focusing on haemoglobin A1c (HbA1c) was performed in hypertensive and hyperglycaemic patients taking cilnidipine and amlodipine. After developing diabetic mice by streptozotocin (STZ) treatment, an osmotic pump including drug was implanted intraperitoneally, followed by weekly measurements of blood glucose levels. Mitochondrial morphology was analysed by electron microscopy. A Ca2+ channel-insensitive cilnidipine derivative (1,4-dihydropyridine [DHP]) was synthesized and its pharmacological effect was evaluated using obese (ob/ob) mice fed with high-fat diet (HFD). KEY RESULTS In patients, cilnidipine was superior to amlodipine in HbA1c lowering effect. Cilnidipine treatment improved systemic hyperglycaemia and mitochondrial morphological abnormalities in STZ-exposed mice, without lowering blood pressure. Cilnidipine failed to improve hyperglycaemia of ob/ob mice, with suppressing insulin secretion. 1,4-DHP improved hyperglycaemia and mitochondria abnormality in ob/ob mice fed HFD. 1,4-DHP and cilnidipine improved basal oxygen consumption rate of HepG2 cells cultured under 25 mM glucose. CONCLUSION AND IMPLICATIONS Inhibition of Drp1-filamin protein complex formation becomes a new strategy for type 2 diabetes treatment.
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Affiliation(s)
- Yuri Kato
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Kohei Ariyoshi
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Yasunobu Nohara
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Naoya Matsunaga
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Tsukasa Shimauchi
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
- Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
| | - Naoya Shindo
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Akiyuki Nishimura
- National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi, Japan
| | - Xinya Mi
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Sang Geon Kim
- College of Pharmacy, Dongguk University-Seoul, Goyang-si, South Korea
| | - Tomomi Ide
- Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eiji Kawanishi
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Akio Ojida
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Naoki Nakashima
- Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yasuo Mori
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Motohiro Nishida
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
- National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi, Japan
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7
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Eid SA, Elzinga SE, Kim B, Rumora AE, Hayes JM, Carter A, Pacut C, Allouch AM, Koubek EJ, Feldman EL. High-Intensity Interval Training, Caloric Restriction, or Their Combination Have Beneficial Effects on Metabolically Acquired Peripheral Neuropathy. Diabetes 2024; 73:1895-1907. [PMID: 39163551 PMCID: PMC11493763 DOI: 10.2337/db23-0997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 08/09/2024] [Indexed: 08/22/2024]
Abstract
Peripheral neuropathy (PN) is a prevalent and debilitating complication of obesity, prediabetes, and type 2 diabetes, which remains poorly understood and lacks disease-modifying therapies. Fortunately, diet and/or exercise have emerged as effective treatment strategies for PN. Here, we examined the impact of caloric restriction (CR) and high-intensity interval training (HIIT) interventions, alone or combined (HIIT-CR), on metabolic and PN outcomes in high-fat diet (HFD) mice. HFD feeding alone resulted in obesity, impaired glucose tolerance, and PN. Peripheral nerves isolated from these mice also developed insulin resistance (IR). CR and HIIT-CR, but not HIIT alone, improved HFD-induced metabolic dysfunction. However, all interventions improved PN to similar extents. When examining the underlying neuroprotective mechanisms in whole nerves, we found that CR and HIIT-CR activate the fuel-sensing enzyme AMPK. We then performed complimentary in vitro work in Schwann cells, the glia of peripheral nerves. Treating primary Schwann cells with the saturated fatty acid palmitate to mimic prediabetic conditions caused IR, which was reversed by the AMPK activator, AICAR. Together, these results enhance our understanding of PN pathogenesis, the differential mechanisms by which diet and exercise may improve PN, and Schwann cell-specific contributions to nerve insulin signaling and PN progression. ARTICLE HIGHLIGHTS
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Affiliation(s)
| | | | - Bhumsoo Kim
- Department of Neurology, University of Michigan, Ann Arbor, MI
| | - Amy E. Rumora
- Department of Neurology, University of Michigan, Ann Arbor, MI
- Department of Neurology, Columbia University, New York, NY
| | - John M. Hayes
- Department of Neurology, University of Michigan, Ann Arbor, MI
| | - Andrew Carter
- Department of Neurology, University of Michigan, Ann Arbor, MI
| | - Crystal Pacut
- Department of Neurology, University of Michigan, Ann Arbor, MI
| | - Adam M. Allouch
- Department of Neurology, University of Michigan, Ann Arbor, MI
| | - Emily J. Koubek
- Department of Neurology, University of Michigan, Ann Arbor, MI
| | - Eva L. Feldman
- Department of Neurology, University of Michigan, Ann Arbor, MI
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8
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Valera-Alberni M, Yao P, Romero-Sanz S, Lanjuin A, Mair WB. Novel imaging tools to study mitochondrial morphology in Caenorhabditis elegans. Life Sci Alliance 2024; 7:e202402918. [PMID: 39260886 PMCID: PMC11391045 DOI: 10.26508/lsa.202402918] [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: 07/01/2024] [Revised: 08/28/2024] [Accepted: 08/29/2024] [Indexed: 09/13/2024] Open
Abstract
Mitochondria exhibit a close interplay between their structure and function. Understanding this intricate relationship requires advanced imaging techniques that can capture the dynamic nature of mitochondria and their impact on cellular processes. However, much of the work on mitochondrial dynamics has been performed in single celled organisms or in vitro cell culture. Here, we introduce novel genetic tools for live imaging of mitochondrial morphology in the nematode Caenorhabditis elegans, addressing a pressing need for advanced techniques in studying organelle dynamics within live intact multicellular organisms. Through a comprehensive analysis, we directly compare our tools with existing methods, demonstrating their advantages for visualizing mitochondrial morphology and contrasting their impact on organismal physiology. We reveal limitations of conventional techniques, whereas showcasing the utility and versatility of our approaches, including endogenous CRISPR tags and ectopic labeling. By providing a guide for selecting the most suitable tools based on experimental goals, our work advances mitochondrial research in C. elegans and enhances the strategic integration of diverse imaging modalities for a holistic understanding of organelle dynamics in living organisms.
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Affiliation(s)
- Miriam Valera-Alberni
- Department of Molecular Metabolism, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Pallas Yao
- Department of Molecular Metabolism, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Silvia Romero-Sanz
- Department of Molecular Metabolism, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Anne Lanjuin
- Department of Molecular Metabolism, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - William B Mair
- Department of Molecular Metabolism, Harvard TH Chan School of Public Health, Boston, MA, USA
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9
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Abou-Shanab AM, Gaser OA, Soliman MW, Oraby A, Salah RA, Gabr M, Edris AAF, Mohamed I, El-Badri N. Human amniotic membrane scaffold enhances adipose mesenchymal stromal cell mitochondrial bioenergetics promoting their regenerative capacities. Mol Cell Biochem 2024:10.1007/s11010-024-05094-x. [PMID: 39453499 DOI: 10.1007/s11010-024-05094-x] [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: 04/15/2024] [Accepted: 08/12/2024] [Indexed: 10/26/2024]
Abstract
The human amniotic membrane (hAM) has been applied as a scaffold in tissue engineering to sustain stem cells and enhance their regenerative capacities. We investigated the molecular and biochemical regulations of mesenchymal stromal cells (MSCs) cultured on hAM scaffold in a three-dimensional (3D) setting. Culture of adipose-MSCs (AMSCs) on decellularized hAM showed significant improvement in their viability, proliferative capacity, resistance to apoptosis, and enhanced MSC markers expression. These cultured MSCs displayed altered expression of markers associated with pro-angiogenesis and inflammation and demonstrated increased potential for differentiation into adipogenic and osteogenic lineages. The hAM scaffold modulated cellular respiration by upregulating glycolysis in MSCs as evidenced by increased glucose consumption, cellular pyruvate and lactate production, and upregulation of glycolysis markers. These metabolic changes modulated mitochondrial oxidative phosphorylation (OXPHOS) and altered the production of reactive oxygen species (ROS), expression of OXPHOS markers, and total antioxidant capacity. They also significantly boosted the urea cycle and altered the mitochondrial ultrastructure. Similar findings were observed in bone marrow-derived MSCs (BMSCs). Live cell imaging of BMSCs cultured in the same 3D environment revealed dynamic changes in cellular activity and interactions with its niche. These findings provide evidence for the favorable properties of hAM as a biomimetic scaffold for enhancing the in vitro functionality of MSCs and supporting their potential usefulness in clinical applications.
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Affiliation(s)
- Ahmed M Abou-Shanab
- Center of Excellence for Stem Cells and Regenerative Medicine, Zewail City of Science and Technology, Giza, 12578, Egypt
| | - Ola A Gaser
- Center of Excellence for Stem Cells and Regenerative Medicine, Zewail City of Science and Technology, Giza, 12578, Egypt
| | - Mariam Waleed Soliman
- Center of Excellence for Stem Cells and Regenerative Medicine, Zewail City of Science and Technology, Giza, 12578, Egypt
| | - Alaa Oraby
- Center of Excellence for Stem Cells and Regenerative Medicine, Zewail City of Science and Technology, Giza, 12578, Egypt
| | - Radwa Ayman Salah
- Center of Excellence for Stem Cells and Regenerative Medicine, Zewail City of Science and Technology, Giza, 12578, Egypt
| | - Mahmoud Gabr
- Urology and Nephrology Center, Mansoura University, Mansoura, 35516, Egypt
| | | | - Ihab Mohamed
- Department of Zoology, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt
| | - Nagwa El-Badri
- Center of Excellence for Stem Cells and Regenerative Medicine, Zewail City of Science and Technology, Giza, 12578, Egypt.
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10
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Fu J, He S, Liu J, Pang J, Wang KN, Chen Y. A novel high signal-to-noise ratio fluorescent probe for real-time mitochondrial viscosity detection and imaging in vitro and in vivo. J Mater Chem B 2024; 12:10635-10643. [PMID: 39310927 DOI: 10.1039/d4tb01486c] [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: 09/25/2024]
Abstract
Mitochondrial viscosity serves as a critical indicator for assessing mitochondrial functionality and offers valuable insights into cellular homeostasis. Continuous, real-time monitoring of mitochondrial viscosity is indispensable for understanding and diagnosing diseases associated with these dynamic changes. In this study, we introduce a novel mitochondrial viscosity-responsive probe named "JL-JC" which is designed by using a molecular strategy, with a classic "D-π-A" molecular structure. Leveraging the distinctive twisted intramolecular charge transfer (TICT) properties of the probe, JL-JC exhibits exceptional sensitivity and a high signal-to-noise ratio, enabling precise detection of viscosity variations within its microenvironment while remaining unaffected by other factors. Upon rapid cellular uptake, JL-JC can efficiently evaluate the mitochondrial viscosity changes under diverse physiological and pathological conditions. Notably, this probe also enables viscosity imaging in zebrafish, offering insights into mitochondrial states in vivo. Our findings present JL-JC as a promising tool and potential diagnostic platform for mitochondria-related diseases.
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Affiliation(s)
- Jinyu Fu
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan, China.
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Medical and Pharmaceutical Basic Research Innovation Center of Emergency and Critical Care Medicine, China's Ministry of Education, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
| | - Simeng He
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan, China.
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Medical and Pharmaceutical Basic Research Innovation Center of Emergency and Critical Care Medicine, China's Ministry of Education, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
| | - Jiandong Liu
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan, China.
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Medical and Pharmaceutical Basic Research Innovation Center of Emergency and Critical Care Medicine, China's Ministry of Education, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
| | - Jiaojiao Pang
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan, China.
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Medical and Pharmaceutical Basic Research Innovation Center of Emergency and Critical Care Medicine, China's Ministry of Education, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
| | - Kang-Nan Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong, China.
- Shenzhen Research Institute of Shandong University, Shenzhen 518057, China
| | - Yuguo Chen
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan, China.
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Medical and Pharmaceutical Basic Research Innovation Center of Emergency and Critical Care Medicine, China's Ministry of Education, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
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11
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Tharayil SP, Rasal S, Gawde U, Mukherjee S, Patil A, Joshi B, Idicula-Thomas S, Shukla P. Relation of mitochondrial DNA copy number and variants with the clinical characteristics of polycystic ovary syndrome. Mol Cell Endocrinol 2024; 594:112386. [PMID: 39423939 DOI: 10.1016/j.mce.2024.112386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2024] [Revised: 09/12/2024] [Accepted: 10/12/2024] [Indexed: 10/21/2024]
Abstract
Mounting evidences suggests mitochondrial dysfunction as a novel contributor in the pathogenesis of PCOS. Herein, we analyzed mtDNA copy number, a biomarker of mitochondrial function in women with PCOS and non-PCOS participants and study its correlation with their clinical characteristics. In this study, we further analyzed association of 383 mtDNA variants, as reported previously by us, with characteristic traits of PCOS and perform structural analysis of mutated protein. Our results indicate relative mitochondrial DNA (mtDNA) copy number to be significantly reduced in women with PCOS compared to non-PCOS group and significantly inversely related to waist to hip ratio (WHR), triglycerides and positively related to high density lipoprotein-cholesterol (HDL-C). After adjustment of the age in the PCOS group, significantly negative correlation of mtDNA copy number with WHR was observed. Unsupervised hierarchical clustering analysis revealed rare, low heteroplasmic mtDNA variants such as 12556G, 1488T, 9200G, 9670G, 3308G, 14480G, 15914T and 5426G to be strongly associated with PCOS related traits. Among these variants, variant 12256G in ND5 gene affected both the flexibility and overall stability of the protein structure. This study is first to reveal significant correlation of mtDNA copy number with WHR in women with PCOS indicating link between mitochondrial dysfunction with central obesity in PCOS. we also first time showed association of rare mtDNA variants with characteristics traits of PCOS highlighting the clinical significance of rare mtDNA variants, which may cumulatively act as early predictors of risk of PCOS and its related comorbidities which may help in the management of PCOS.
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Affiliation(s)
- Samia Palat Tharayil
- Department of Molecular Endocrinology, The Indian Council of Medical Research-National Institute for Research in Reproductive and Child Health (ICMR-NIRRCH), J.M. Street, Parel, Mumbai, 400012, India
| | - Sayli Rasal
- Department of Molecular Endocrinology, The Indian Council of Medical Research-National Institute for Research in Reproductive and Child Health (ICMR-NIRRCH), J.M. Street, Parel, Mumbai, 400012, India
| | - Ulka Gawde
- Biomedical Informatics Centre, The Indian Council of Medical Research-National Institute for Research in Reproductive and Child Health (ICMR-NIRRCH), J.M. Street, Parel, Mumbai, 400012, India
| | - Srabani Mukherjee
- Department of Molecular Endocrinology, The Indian Council of Medical Research-National Institute for Research in Reproductive and Child Health (ICMR-NIRRCH), J.M. Street, Parel, Mumbai, 400012, India
| | - Anushree Patil
- Department of Clinical Research, The Indian Council of Medical Research-National Institute for Research in Reproductive and Child Health (ICMR-NIRRCH), J.M. Street, Parel, Mumbai, 400012, India
| | - Beena Joshi
- Department of Operational and Implementation Research, The Indian Council of Medical Research-National Institute for Research in Reproductive and Child Health (ICMR-NIRRCH), J.M. Street, Parel, Mumbai, 400012, India
| | - Susan Idicula-Thomas
- Biomedical Informatics Centre, The Indian Council of Medical Research-National Institute for Research in Reproductive and Child Health (ICMR-NIRRCH), J.M. Street, Parel, Mumbai, 400012, India
| | - Pallavi Shukla
- Department of Molecular Endocrinology, The Indian Council of Medical Research-National Institute for Research in Reproductive and Child Health (ICMR-NIRRCH), J.M. Street, Parel, Mumbai, 400012, India.
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12
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Gupta S, Cassel SL, Sutterwala FS, Dagvadorj J. Regulation of the NLRP3 inflammasome by autophagy and mitophagy. Immunol Rev 2024. [PMID: 39417249 DOI: 10.1111/imr.13410] [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] [Indexed: 10/19/2024]
Abstract
The NLRP3 inflammasome is a multiprotein complex that upon activation by the innate immune system drives a broad inflammatory response. The primary initial mediators of this response are pro-IL-1β and pro-IL-18, both of which are in an inactive form. Formation and activation of the NLRP3 inflammasome activates caspase-1, which cleaves pro-IL-1β and pro-IL-18 and triggers the formation of gasdermin D pores. Gasdermin D pores allow for the secretion of active IL-1β and IL-18 initiating the organism-wide inflammatory response. The NLRP3 inflammasome response can be beneficial to the host; however, if the NLRP3 inflammasome is inappropriately activated it can lead to significant pathology. While the primary components of the NLRP3 inflammasome are known, the precise details of assembly and activation are less well defined and conflicting. Here, we discuss several of the proposed pathways of activation of the NLRP3 inflammasome. We examine the role of subcellular localization and the reciprocal regulation of the NLRP3 inflammasome by autophagy. We focus on the roles of mitochondria and mitophagy in activating and regulating the NLRP3 inflammasome. Finally, we detail the impact of pathologic NLRP3 responses in the development and manifestations of pulmonary disease.
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Affiliation(s)
- Suman Gupta
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
- Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Suzanne L Cassel
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
- Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Fayyaz S Sutterwala
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
- Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Jargalsaikhan Dagvadorj
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
- Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
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13
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Kumar P, Kumar R, Kumar P, Kushwaha S, Kumari S, Yadav N, Srikrishna S. LC-Orbitrap HRMS-Based Proteomics Reveals Novel Mitochondrial Dynamics Regulatory Proteins Associated with RasV12-Induced Glioblastoma (GBM) of Drosophila. J Proteome Res 2024. [PMID: 39413821 DOI: 10.1021/acs.jproteome.4c00502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2024]
Abstract
Glioblastoma multiforme (GBM) is the most prevalent and aggressive brain tumor found in adult humans with a poor prognosis and average survival of 14-15 months. In order to have a comprehensive understanding of proteome and identify novel therapeutic targets, this study focused mainly on the differentially abundant proteins (DAPs) of RasV12-induced GBM. RasV12 is a constitutively active Ras mutant form essential for tumor progression by continuously activating signaling pathways leading to uncontrolled tumor growth. This study used a transgenic Drosophila model with RasV12 overexpression using the repo-GAL4 driver line, specifically in glial cells, to study GBM. The high-resolution mass spectrometry (HRMS)-based proteomic analysis of the GBM larval central nervous system identified three novel DAPs specific to mitochondria. These DAPs, probable maleylacetoacetate isomerase 2 (Q9VHD2), bifunctional methylene tetrahydrofolate dehydrogenase (Q04448), and glutamine synthetase1 (P20477), identified through HRMS were further validated by qRT-PCR. The protein-protein interaction analysis revealed interactions between RasV12 and DAPs, with functional links to mitochondrial dynamics regulators such as Drp1, Marf, Parkin, and HtrA2. Notably, altered expressions of Q9VHD2, P20477, and Q04448 were observed during GBM progression, which offers new insights into the involvement of mitochondrial dynamic regulators in RasV12-induced GBM pathophysiology.
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Affiliation(s)
- Pradeep Kumar
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Rohit Kumar
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Prabhat Kumar
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Sunaina Kushwaha
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Sandhya Kumari
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Neha Yadav
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Saripella Srikrishna
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
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14
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Xu MR, Lin CH, Wang CH, Wang SY. Investigate the metabolic changes in intestinal diseases by employing a 1H-NMR-based metabolomics approach on Caco-2 cells treated with cedrol. Biofactors 2024. [PMID: 39415440 DOI: 10.1002/biof.2132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Accepted: 10/01/2024] [Indexed: 10/18/2024]
Abstract
Mitochondrial dysfunction may precipitate intestinal dysfunction, while inflammatory bowel disease manifests as a chronic inflammatory ailment affecting the gastrointestinal tract. This condition disrupts the barrier function of the intestinal epithelium and alters metabolic products. Increasing mitochondrial adenosine triphosphate (ATP) synthesis in intestinal epithelial cells presents a promising avenue for colitis treatments. Nevertheless, the impact of cedrol on ATP and the intestinal barrier remains unexplored. Hence, this study is dedicated to examining the cedrol's protective effect on an inflammatory cocktail (IC)-induced intestinal epithelial barrier dysfunction in Caco-2 cells. The finding reveals that cedrol enhances ATP content and the transepithelial electrical resistance value in the intestinal epithelial barrier. Moreover, cedrol mitigates the IC-induced decrease in the messenger ribonucleic acid (mRNA) expression of tight junction proteins (ZO-1, Occludin, and Claudin-1), thereby ameliorating intestinal epithelial barrier dysfunction. Furthermore, nuclear magnetic resonance (NMR)-based metabolomic analysis indicated that IC-exposed Caco-2 cells are restored by cedrol treatments. Notably, cedrol elevates metabolites such as amino acids, thereby enhancing the intestinal barrier. In conclusion, cedrol alleviates IC-induced intestinal epithelial barrier dysfunction by promoting ATP-dependent proliferation of Caco-2 cells and bolstering amino acid levels to sustain tight junction messenger ribonucleic acid expression.
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Affiliation(s)
- Mo-Rong Xu
- Doctoral Program in Microbial Genomics, National Chung Hsing University and Academia Sinica, Taichung, Taiwan
- Department of Forestry, National Chung Hsing University, Taichung, Taiwan
| | - Chia-Hsin Lin
- Department of Forestry, National Chung Hsing University, Taichung, Taiwan
| | - Chung Hsuan Wang
- Special Crop and Metabolome Discipline Cluster, Academy Circle Economy, National Chung Hsing University, Taichung, Taiwan
| | - Sheng-Yang Wang
- Doctoral Program in Microbial Genomics, National Chung Hsing University and Academia Sinica, Taichung, Taiwan
- Department of Forestry, National Chung Hsing University, Taichung, Taiwan
- Special Crop and Metabolome Discipline Cluster, Academy Circle Economy, National Chung Hsing University, Taichung, Taiwan
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
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15
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Luo H, Lai Y, Tang W, Wang G, Shen J, Liu H. Mitochondrial transplantation: a promising strategy for treating degenerative joint diseases. J Transl Med 2024; 22:941. [PMID: 39407249 PMCID: PMC11475785 DOI: 10.1186/s12967-024-05752-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2024] [Accepted: 10/08/2024] [Indexed: 10/20/2024] Open
Abstract
The prevalence of age-related degenerative joint diseases, particularly intervertebral disc degeneration and osteoarthritis, is increasing, thereby posing significant challenges for the elderly population. Mitochondrial dysfunction is a critical factor in the etiology and progression of these disorders. Therapeutic interventions that incorporate mitochondrial transplantation exhibit considerable promise by increasing mitochondrial numbers and improving their functionality. Existing evidence suggests that exogenous mitochondrial therapy improves clinical outcomes for patients with degenerative joint diseases. This review elucidates the mitochondrial abnormalities associated with degenerative joint diseases and examines the mechanisms of mitochondrial intercellular transfer and artificial mitochondrial transplantation. Furthermore, therapeutic strategies for mitochondrial transplantation in degenerative joint diseases are synthesized, and the concept of engineered mitochondrial transplantation is proposed.
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Affiliation(s)
- Hong Luo
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Yue Lai
- Department of Orthopedics, Affiliated Hospital of Guangdong medical University, zhanjiang, 524000, China
| | - Weili Tang
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Guoyou Wang
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, 646000, Sichuan, China.
| | - Jianlin Shen
- Central Laboratory, Affiliated Hospital of Putian University, Putian, 351100, Fujian, China.
- Department of Orthopedics, Affiliated Hospital of Putian University, Putian, 351100, Fujian, China.
| | - Huan Liu
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, 646000, Sichuan, China.
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16
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Yoshinaga N, Numata K. Poly(A) Tail Length of Messenger RNA Regulates Translational Efficiency of the Mitochondria-Targeting Delivery System. ACS Biomater Sci Eng 2024; 10:6344-6351. [PMID: 39231264 DOI: 10.1021/acsbiomaterials.4c01169] [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] [Indexed: 09/06/2024]
Abstract
Mitochondria are essential for cellular functions, such as energy production. Human mitochondrial DNA (mtDNA), encoding 13 distinct genes, two rRNA, and 22 tRNA, is crucial for maintaining vital functions, along with nuclear-encoded mitochondrial proteins. However, mtDNA is prone to somatic mutations due to replication errors and reactive oxygen species exposure. These mutations can accumulate, leading to heteroplasmic conditions associated with severe metabolic diseases. Therefore, developing methodologies to improve mitochondrial health is highly demanded. Introducing nucleic acids directly into mitochondria is a promising strategy to control mitochondrial gene expression. Messenger RNA (mRNA) delivery especially offers several advantages such as faster gene expression and reduced risk of genome integration if accidentally delivered to the cell nucleus. In this study, we investigated the effect of the poly(A) tail length of mRNA on the mitochondrial translation to achieve efficient expression. We used a peptide-based mitochondrial targeting system, mitoNEET-(RH)9, comprising a mitochondria-targeting sequence (MTS) and a cationic sequence, to deliver mRNA with various poly(A) tails into the mitochondria. The poly(A) tail length significantly affected translational efficiency, with a medium length of 60 nucleotides maximizing protein expression in various cell lines due to enhanced interaction with mitochondrial RNA-binding proteins. Our findings highlight the importance of optimizing poly(A) tail length for efficient mitochondrial mRNA translation, providing a potential strategy for improving mitochondrial gene therapy. These results pave the way for further exploration of the mechanisms and clinical applications of mitochondrial mRNA delivery systems.
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Affiliation(s)
- Naoto Yoshinaga
- Biomacromolecule Research Team, RIKEN Center for Sustainable Resource Science, Wako-shi, Saitama 351-0198, Japan
- Institute for Advanced Biosciences, Keio University, Tsuruoka-shi, Yamagata 997-0017, Japan
| | - Keiji Numata
- Biomacromolecule Research Team, RIKEN Center for Sustainable Resource Science, Wako-shi, Saitama 351-0198, Japan
- Institute for Advanced Biosciences, Keio University, Tsuruoka-shi, Yamagata 997-0017, Japan
- Department of Material Chemistry, Kyoto University, Kyoto-shi, Kyoto 606-8501, Japan
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17
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Conti Nibali S, Battiato G, Pappalardo XG, De Pinto V. Voltage-Dependent Anion Channels in Male Reproductive Cells: Players in Healthy Fertility? Biomolecules 2024; 14:1290. [PMID: 39456223 DOI: 10.3390/biom14101290] [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: 09/09/2024] [Revised: 10/07/2024] [Accepted: 10/10/2024] [Indexed: 10/28/2024] Open
Abstract
Male infertility affects nearly 50% of infertile couples, with various underlying causes, including endocrine disorders, testicular defects, and environmental factors. Spermatozoa rely on mitochondrial oxidative metabolism for motility and fertilization, with mitochondria playing a crucial role in sperm energy production, calcium regulation, and redox balance. Voltage-dependent anion channels (VDACs), located on the outer mitochondrial membrane, regulate energy and metabolite exchange, which are essential for sperm function. This review offers an updated analysis of VDACs in the male reproductive system, summarizing recent advances in understanding their expression patterns, molecular functions, and regulatory mechanisms. Although VDACs have been widely studied in other tissues, their specific roles in male reproductive physiology still remain underexplored. Special attention is given to the involvement of VDAC2/3 isoforms, which may influence mitochondrial function in sperm cells and could be implicated in male fertility disorders. This update provides a comprehensive framework for future research in reproductive biology, underscoring the significance of VDACs as a molecular link between mitochondrial function and male fertility.
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Affiliation(s)
- Stefano Conti Nibali
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Giuseppe Battiato
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Xena Giada Pappalardo
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - Vito De Pinto
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
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18
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Morciano G, Pinton P. Modulation of mitochondrial permeability transition pores in reperfusion injury: Mechanisms and therapeutic approaches. Eur J Clin Invest 2024:e14331. [PMID: 39387139 DOI: 10.1111/eci.14331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Accepted: 09/24/2024] [Indexed: 10/12/2024]
Abstract
Ischemia/reperfusion injury is attracting continuous interest in science for two reasons: because it affects several clinical conditions and because it has been identified, albeit in broad terms, the molecular entity becoming activated by the reperfusion damage paradoxes. Indeed, calcium, oxygen-dependent oxidative stress and pH would activate conformational changes in the mitochondrial cristae embedded F1/FO ATP synthase, allowing the formation of pores in the inner mitochondrial membrane thus increasing its permeability. This is a key determinant for mitochondrial stress, cell death and tissue dysfunction. Targeting each of these factors has never contributed to improved clinical outcome of the patients affected by reperfusion damage; now, the focus on the PTP opening could represent the closest target to solve this pathway made by extensive cell death when the tissues become revascularized. In this review, we summarized last knowledge about the structure, the modulation and the therapeutic targeting of the PTP, focusing on ATP synthase and cardiac ischemia/reperfusion.
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Affiliation(s)
- Giampaolo Morciano
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
- Maria Cecilia Hospital, GVM Care & Research, Cotignola, Italy
| | - Paolo Pinton
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
- Maria Cecilia Hospital, GVM Care & Research, Cotignola, Italy
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19
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Lin L, Wei J, Xue J, Fan G, Zhu W, Zhu Y, Wu R. Drp1 Promotes Macrophage M1 Polarization and Inflammatory Response in Autoimmune Myocarditis by Driving Mitochondrial Fission. J Cardiovasc Transl Res 2024:10.1007/s12265-024-10570-2. [PMID: 39388091 DOI: 10.1007/s12265-024-10570-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Accepted: 10/02/2024] [Indexed: 10/12/2024]
Abstract
Autoimmune myocarditis (AM) is characterized by an intricate inflammatory response within the myocardium. Dynamin-related protein 1 (Drp1), a pivotal modulator of mitochondrial fission, plays a role in the pathogenesis of various diseases. A myosin-induced experimental autoimmune myocarditis (EAM) mouse model was successfully established. Flow cytometry was employed to detect M1/M2-like macrophages. Mitochondrial fragmentation was assessed using Mito-Tracker Red CMXRos. Drp1 was upregulated and activated in EAM mice. Depletion of Drp1 was observed to mitigate inflammation, macrophage infiltration and M1 polarization within the cardiac tissue of EAM mice. In M1-like macrophages derived from the hearts of EAM mice, Drp1 was found to promote mitochondrial fission and diminish mitochondrial fusion. Furthermore, the depletion of Drp1 reduced the NF-κB-related pro-inflammatory response in EAM-associated M1-like macrophages. Drp1 drives mitochondrial fission in macrophages, driving their M1 polarization and the subsequent inflammatory response. Drp1 may represent an effective target for the prevention and treatment of AM.
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Affiliation(s)
- Lin Lin
- Department of Cardiovascular Medicine, Cardiovascular Hospital of the Second Affiliated Hospital of Xi'an Jiaotong University, Daminggong Campus, No. 5 Jianqiang Road, Xi'an, 710016, Weiyang District, China.
| | - Jin Wei
- Department of Cardiovascular Medicine, Cardiovascular Hospital of the Second Affiliated Hospital of Xi'an Jiaotong University, Daminggong Campus, No. 5 Jianqiang Road, Xi'an, 710016, Weiyang District, China
| | - Jiahong Xue
- Department of Cardiovascular Medicine, Cardiovascular Hospital of the Second Affiliated Hospital of Xi'an Jiaotong University, Daminggong Campus, No. 5 Jianqiang Road, Xi'an, 710016, Weiyang District, China
| | - Gang Fan
- Second Department of Cardiology, Xianyang First People's Hospital, Shaanxi University of Chinese Medicine, Xianyang, 712000, China
| | - Wenjing Zhu
- Department of Cardiovascular Medicine, Cardiovascular Hospital of the Second Affiliated Hospital of Xi'an Jiaotong University, Daminggong Campus, No. 5 Jianqiang Road, Xi'an, 710016, Weiyang District, China
| | - Yanhe Zhu
- Institute of Endiquidiopathies, School of Public Health, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Ruiyun Wu
- Department of Internal Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, China
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20
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Ryu Y, Seo JH, Kim HS, Nam YJ, Bo Noh K, Oh SH, Hwang JS, Shin YJ. COL8A2 Activation Enhances Function of Corneal Endothelial Cells through HIPPO Signaling/Mitochondria Pathway. Matrix Biol 2024:S0945-053X(24)00122-7. [PMID: 39395654 DOI: 10.1016/j.matbio.2024.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 09/24/2024] [Accepted: 10/02/2024] [Indexed: 10/14/2024]
Abstract
Corneal endothelial cells (CECs) are essential for maintaining corneal transparency and hydration through their barrier and pump functions. The COL8A2 gene encodes a component of the extracellular matrix of the cornea, which is crucial for the normal functioning of these cells. Mutations in COL8A2 are linked to corneal dystrophies, emphasizing the gene's importance in corneal health. The purpose of this research is to explore the effects of COL8A2 activation within CECs, to understand its contribution to cellular behavior and health. COL8A2 CRISPR/dCas9 activation system (aCOL8A2) was used to activate the COL8A2. In rats, wound healing and mitochondrial function were assessed after COL8A2 activation. As a result, aCOL8A2 promoted wound healing of rat corneal endothelium by increasing mitochondrial membrane potential. In cultured human CECs, proteomic analysis was performed to screen and identify the differential protein profiles between control and aCOL8A2 cells. Western blot was used to validate the differential proteins from both cells. Mitochondrial function and intracellular distribution were assessed by measuring ATP production and mitochondrial membrane potential. In cultured human CECs, aCOL8A2 increased COL8A2 and phospho-YAP levels. Transendothelial electrical resistance (TEER) was increased and actin cytoskeleton was attenuated by aCOL8A2. Gene ontology analysis revealed that the proteins were mainly involved in the regulation of folate biosynthesis, ECM-receptor interaction, cell differentiation, NADP activity and cytoskeleton. ATP production was increased, mitochondrial membrane potential was polarized and mitochondrial distribution was widespread in the aCOL8A2 group. In conclusion, aCOL8A2 induces a regulatory cascade affecting mitochondrial positioning and efficiency, mediated by alterations in the cytoskeletal architecture and the YAP signaling pathway. This sequence of events serves to bolster the functional capacities of corneal endothelial cells, including their pump and barrier functions, essential for corneal health and transparency.
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Affiliation(s)
- Yunkyoung Ryu
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea; Hallym BioEyeTech Research Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Je Hyun Seo
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Hak Su Kim
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Youn Joo Nam
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea; Hallym BioEyeTech Research Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Kyung Bo Noh
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea; Hallym BioEyeTech Research Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Sun-Hee Oh
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea; Hallym BioEyeTech Research Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Jin Sun Hwang
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Young Joo Shin
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea; Hallym BioEyeTech Research Center, Hallym University College of Medicine, Seoul, Republic of Korea.
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21
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Jiao W, Cheng Y, Liu C, Feng J, Lin J, Shen Y. SGLT1 inhibition alleviates radiation-induced intestinal damage through promoting mitochondrial homeostasis. Free Radic Biol Med 2024; 224:831-845. [PMID: 39393555 DOI: 10.1016/j.freeradbiomed.2024.10.274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 10/06/2024] [Accepted: 10/08/2024] [Indexed: 10/13/2024]
Abstract
Radiation-induced intestinal injury (RIII) constitutes a challenge in radiotherapy. Ionizing radiation (IR) induces DNA and mitochondrial damage by increasing reactive oxygen species (ROS). Sodium-glucose cotransporter 1 (SGLT1) is abundant in the gastrointestinal tract and the protective effects of inhibited SGLT1 in kidney and cardiovascular disease have been widely reported. However, the function of SGLT1 in RIII remains unclear. Herein, we reported that IR induced intestinal epithelial cell damage along with upregulation of SGLT1 in vivo and in vitro, which was alleviated by inhibition of SGLT1. Specifically, maintaining intestinal cell homeostasis was detected through cellular proliferation, apoptosis, and DNA damage assays, promoting epithelial regeneration and lifespan extension. Considering the importance of mitochondrial function in cell fate, we next confirmed that SGLT inhibition maintains mitochondrial homeostasis through enhanced mitophagy in intestinal epithelial cells. Finally, based on the bioinformatics analysis and cell validation, we demonstrated that inhibition of SGLT1 suppresses the PI3K/AKT/mTOR pathway to enhance mitophagy activation post-irradiation. In addition, we preliminarily demonstrate that SGLT inhibitors do not affect the radiosensitivity of tumors. Hence, our findings suggest that inhibition of SGLT is a promising therapeutic strategy to protect against RIII. To the best of our knowledge, this is the first report on the potential effect of SGLT1 inhibition in RIII.
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Affiliation(s)
- Wenlin Jiao
- NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun, China
| | - Yunyun Cheng
- NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun, China
| | - Chang Liu
- NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun, China
| | - Jie Feng
- NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun, China
| | - Jiguo Lin
- NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun, China
| | - Yannan Shen
- NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun, China.
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22
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Delgado-Waldo I, Dokudovskaya S, Loissell-Baltazar YA, Pérez-Arteaga E, Coronel-Hernández J, Martínez-Vázquez M, Pérez-Yépez EA, Lopez-Saavedra A, Jacobo-Herrera N, Pérez Plasencia C. Laherradurin Inhibits Colorectal Cancer Cell Growth by Induction of Mitochondrial Dysfunction and Autophagy Induction. Cells 2024; 13:1649. [PMID: 39404412 PMCID: PMC11475353 DOI: 10.3390/cells13191649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2024] [Revised: 09/27/2024] [Accepted: 09/30/2024] [Indexed: 10/19/2024] Open
Abstract
LAH, an acetogenin from the Annonaceae family, has demonstrated antitumor activity in several cancer cell lines and in vivo models, where it reduced the tumor size and induced programmed cell death. We focused on the effects of LAH on mitochondrial dynamics, mTOR signaling, autophagy, and apoptosis in colorectal cancer (CRC) cells to explore its anticancer potential. METHODS CRC cells were treated with LAH, and its effects on mitochondrial respiration and glycolysis were measured using Seahorse XF technology. The changes in mitochondrial dynamics were observed through fluorescent imaging, while Western blot analysis was used to examine key autophagy and apoptosis markers. RESULTS LAH significantly inhibited mitochondrial complex I activity, inducing ATP depletion and a compensatory increase in glycolysis. This disruption caused mitochondrial fragmentation, a trigger for autophagy, as shown by increased LC3-II expression and mTOR suppression. Apoptosis was also confirmed through the cleavage of caspase-3, contributing to reduced cancer cell viability. CONCLUSIONS LAH's anticancer effects in CRC cells are driven by its disruption of mitochondrial function, triggering both autophagy and apoptosis. These findings highlight its potential as a therapeutic compound for further exploration in cancer treatment.
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Affiliation(s)
- Izamary Delgado-Waldo
- Unidad de Bioquímica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Av. Vasco de Quiroga 15, Col. Belisario Domínguez Sección XVI, Tlalpan, Ciudad de México 14080, Mexico; (I.D.-W.); (E.P.-A.)
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Copilco Universidad, Coyoacán, Ciudad de México 04510, Mexico
| | - Svetlana Dokudovskaya
- CNRS UMR9018, Institut Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France; (S.D.); (Y.A.L.-B.)
| | - Yahir A. Loissell-Baltazar
- CNRS UMR9018, Institut Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France; (S.D.); (Y.A.L.-B.)
| | - Eduardo Pérez-Arteaga
- Unidad de Bioquímica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Av. Vasco de Quiroga 15, Col. Belisario Domínguez Sección XVI, Tlalpan, Ciudad de México 14080, Mexico; (I.D.-W.); (E.P.-A.)
| | - Jossimar Coronel-Hernández
- Laboratorio de Genómica, Instituto Nacional de Cancerología, Instituto Nacional Nacional de Cancerología, Av. San Fernando 22, Belisario Domínguez Secc 16, Tlalpan, Ciudad de México 14080, Mexico; (J.C.-H.); (E.A.P.-Y.)
| | - Mariano Martínez-Vázquez
- Instituto de Química, Universidad Nacional Autónoma de México, C. Exterior, C. Universitaria, Coyoacán, Ciudad de México 04510, Mexico;
| | - Eloy Andrés Pérez-Yépez
- Laboratorio de Genómica, Instituto Nacional de Cancerología, Instituto Nacional Nacional de Cancerología, Av. San Fernando 22, Belisario Domínguez Secc 16, Tlalpan, Ciudad de México 14080, Mexico; (J.C.-H.); (E.A.P.-Y.)
| | - Alejandro Lopez-Saavedra
- Advanced Microscopy Applications Unit (ADMIRA), Instituto Nacional de Cancerología, San Fernando 22. Col. Sección XVI, Tlalpan, Ciudad de México 14080, Mexico;
- Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey Ciudad de Mexico, C. Puente #222, Coapa, Arboledas del Sur, Tlalpan, Ciudad de Mexico 14380, Mexico
| | - Nadia Jacobo-Herrera
- Unidad de Bioquímica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Av. Vasco de Quiroga 15, Col. Belisario Domínguez Sección XVI, Tlalpan, Ciudad de México 14080, Mexico; (I.D.-W.); (E.P.-A.)
| | - Carlos Pérez Plasencia
- Laboratorio de Genómica, Instituto Nacional de Cancerología, Instituto Nacional Nacional de Cancerología, Av. San Fernando 22, Belisario Domínguez Secc 16, Tlalpan, Ciudad de México 14080, Mexico; (J.C.-H.); (E.A.P.-Y.)
- Laboratorio de Genómica Funcional, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla Estado de México 54090, Mexico
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23
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Wu T, Liu H, Xu R, Li Z, Wei Y. Differences in cellular and molecular processes in exposure to PM 2.5 and O 3. ENVIRONMENT INTERNATIONAL 2024; 192:109052. [PMID: 39406161 DOI: 10.1016/j.envint.2024.109052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Revised: 09/06/2024] [Accepted: 10/03/2024] [Indexed: 10/26/2024]
Abstract
Epidemiological and toxicological studies have shown that PM2.5 and O3 could pose significant risks to human health, such as an increased incidence of respiratory and cardiovascular diseases. Usually, the adverse health outcomes induced by PM2.5 and O3 exposure are similar. However, PM2.5 and O3 have distinct physical and chemical properties, with PM2.5 being a solid-liquid mixture and O3 being a strongly oxidizing gaseous pollutant. Therefore, we speculated that there are some differences in biological processes induced by PM2.5 and O3 exposure. In the present study, we investigated the differences induced by PM2.5 and O3 exposure from the perspective of cellular and molecular processes. Firstly, the pulmonary epithelial cells (BEAS-2B) were exposed to different concentrations of PM2.5 or O3 at different durations. Then, we chose experimental models with the concentrations and duration at which the cell survival rate was 50 % after exposure to PM2.5 and O3, which were 100 μg/mL for 24 h for PM2.5, and 200 ppb for 4 h for O3. Our findings indicate that PM2.5 infiltrates cells via endocytosis without causing significant damage to cell membranes, while O3 induces lipid peroxidation at the cell surface. Moreover, the detection of mitochondrial function showed that the content of ATP was significantly reduced after exposure to both PM2.5 and O3. However, we found a significant difference in mtDNA copy number. PM2.5 exposure increased the mtDNA copy number by up-regulating the expression of fission genes (Fis1, Mff, Dnm1). O3 exposure decreased it by up-regulating the expression of fusion gene (Mfn1, Mfn2) and down-regulating the expression of fission gene (Fis1, Dnm1). These results indicate that although both PM2.5 and O3 exposure induced almost exactly similar adverse health outcomes, significant differences do exist in cellular and molecular processes.
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Affiliation(s)
- Tingting Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China; College of Environmental Science And Engineering, Tongji University, Shanghai, China
| | - Hao Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Rongrong Xu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China; College of Environmental Science And Engineering, Tongji University, Shanghai, China
| | - Zhigang Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China.
| | - Yongjie Wei
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China; College of Environmental Science And Engineering, Tongji University, Shanghai, China; Center for Global Health, School of Public Health, Nanjing Medical University, China.
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24
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Robertson AG, Hall AJ, Marfavi A, Rendina LM. Superior Tumor Cell Uptake by Mono- and Tri-Nuclear Rhodamine-Gadolinium(III) Agents. Chemistry 2024; 30:e202402244. [PMID: 39048509 DOI: 10.1002/chem.202402244] [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: 06/10/2024] [Revised: 07/22/2024] [Accepted: 07/24/2024] [Indexed: 07/27/2024]
Abstract
The synthesis and characterization of a novel trinuclear rhodamine-Gd(III) complex, along with two analogous mononuclear rhodamine-Gd(III) complexes, are reported. All complexes displayed good selectivity in a human glioma cell line (T98G) when compared to a glial cell line (SVG p12), with low cytotoxicities. Superior tumor cell uptake for these Gd(III) complexes was observed at lower incubation concentrations compared to previously-reported delocalized lipophilic cations such as a rhodamine-lanthanoid(III) probe and Gd(III)-arylphosphonium complexes, with ca. 150 % and 250 % increases in Gd uptake, respectively.
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Affiliation(s)
- Amy G Robertson
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Andrew J Hall
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Anita Marfavi
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- Nano Institute, Sydney, NSW 2006, Australia
| | - Louis M Rendina
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- Nano Institute, Sydney, NSW 2006, Australia
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25
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Neha, Mazahir I, Khan SA, Kaushik P, Parvez S. The Interplay of Mitochondrial Bioenergetics and Dopamine Agonists as an Effective Disease-Modifying Therapy for Parkinson's Disease. Mol Neurobiol 2024; 61:8086-8103. [PMID: 38468113 DOI: 10.1007/s12035-024-04078-8] [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: 11/01/2023] [Accepted: 02/28/2024] [Indexed: 03/13/2024]
Abstract
Parkinson's disease (PD) is a progressive neurological ailment with a slower rate of advancement that is more common in older adults. The biggest risk factor for PD is getting older, and those over 60 have an exponentially higher incidence of this condition. The failure of the mitochondrial electron chain, changes in the dynamics of the mitochondria, and abnormalities in calcium and ion homeostasis are all symptoms of Parkinson's disease (PD). Increased mitochondrial reactive oxygen species (mROS) and an energy deficit are linked to these alterations. Levodopa (L-DOPA) is a medication that is typically used to treat most PD patients, but because of its negative effects, additional medications have been created utilizing L-DOPA as the parent molecule. Ergot and non-ergot derivatives make up most PD medications. PD is successfully managed with the use of dopamine agonists (DA). To get around the motor issues produced by L-DOPA, these dopamine derivatives can directly excite DA receptors in the postsynaptic membrane. In the past 10 years, two non-ergoline DA with strong binding properties for the dopamine D2 receptor (D2R) and a preference for the dopamine D3 receptor (D3R) subtype, ropinirole, and pramipexole (PPx) have been developed for the treatment of PD. This review covers the most recent research on the efficacy and safety of non-ergot drugs like ropinirole and PPx as supplementary therapy to DOPA for the treatment of PD.
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Affiliation(s)
- Neha
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi, 110062, India
| | - Iqra Mazahir
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi, 110062, India
| | - Sara Akhtar Khan
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi, 110062, India
| | - Pooja Kaushik
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi, 110062, India.
| | - Suhel Parvez
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi, 110062, India.
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26
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Liu C, Wu C, Zhang S, Lv Z. Contribution of impaired autophagy, mitochondrial dysfunction and abnormal lipolysis to epididymal aging in mice. Exp Gerontol 2024; 195:112528. [PMID: 39067197 DOI: 10.1016/j.exger.2024.112528] [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: 06/01/2024] [Revised: 07/13/2024] [Accepted: 07/23/2024] [Indexed: 07/30/2024]
Abstract
With the increase of the aged population in modern society, research on aging and aging-related diseases has attracted increasing attention. Unlike women, men experience changes gradually in the reproductive system during aging. The epididymis is an important organ for sperm maturation and storage, but less study has been conducted to investigate cellular senescence in aging epididymis and the corresponding influences on sperm. This study aims to explore cellular and molecular mechanisms underlying aging changes in epididymal tissues. Cellular senescence in the epididymis of 18-month-old C57BL/6 J mice was evaluated with SA (senescence-associated)-β-galactosidase staining and molecular markers such as P21 and Lamin B, compared to the 2-month-old young group. Western blot analysis and immunofluorescence staining were performed to examine the proteins expressions involved in AMPKα/SIRT1 pathway, autophagy/mitophagy, mitochondrial dynamics and lipolysis. The results showed that in old mice AMPKα/ SIRT1 pathway was downregulated with increased acetylation in the epididymal tissues. Reduced expressions of autophagy related genes and PINK1/PARK2 were detected as well as increased P62 protein level and decreased colocalization of LC3 and LAMP2, which indicated deficient autophagy and mitophagy occurred in aging epididymal tissues. Significant decreased expressions of MFN1, MFN2, p-DRP1(Ser637) and FIS1 showed an imbalance in mitochondrial dynamics in aging epididymal tissues. Additionally, intracellular lipid droplets accumulation occurred in epididymal epithelial cells in old mice, with reduced expressions of the lipolysis enzymes ATGL, HSL and Ascl4. Lipophagy impairment was further detected by minimal colocalization of lipid droplets with either LC3 or LAMP2 in the epididymal ductal epithelial cells of old mice. Our study provides new insights into the molecular mechanisms of impaired autophagy, imbalanced mitochondrial dynamics and disrupted lipolysis, which together contribute to senescent changes and may be detrimental to the epididymal function during aging.
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Affiliation(s)
- Chao Liu
- Department of Histology & Embryology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Chongkang Wu
- Department of Histology & Embryology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Shoubing Zhang
- Department of Histology & Embryology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Zhengmei Lv
- Department of Histology & Embryology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China.
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27
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Zhang H, Zhang Y, Zhang J, Jia D. Exercise Alleviates Cardiovascular Diseases by Improving Mitochondrial Homeostasis. J Am Heart Assoc 2024; 13:e036555. [PMID: 39291488 DOI: 10.1161/jaha.124.036555] [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] [Indexed: 09/19/2024]
Abstract
Engaging in regular exercise and physical activity contributes to delaying the onset of cardiovascular diseases (CVDs). However, the physiological mechanisms underlying the benefits of regular exercise or physical activity in CVDs remain unclear. The disruption of mitochondrial homeostasis is implicated in the pathological process of CVDs. Exercise training effectively delays the onset and progression of CVDs by significantly ameliorating the disruption of mitochondrial homeostasis. This includes improving mitochondrial biogenesis, increasing mitochondrial fusion, decreasing mitochondrial fission, promoting mitophagy, and mitigating mitochondrial morphology and function. This review provides a comprehensive overview of the benefits of physical exercise in the context of CVDs, establishing a connection between the disruption of mitochondrial homeostasis and the onset of these conditions. Through a detailed examination of the underlying molecular mechanisms within mitochondria, the study illuminates how exercise can provide innovative perspectives for future therapies for CVDs.
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Affiliation(s)
- Huijie Zhang
- School of Exercise and health Shanghai University of Sport Shanghai China
| | - Yuxuan Zhang
- School of Exercise and health Shanghai University of Sport Shanghai China
| | - Jiaqiao Zhang
- School of Exercise and health Shanghai University of Sport Shanghai China
| | - Dandan Jia
- School of Exercise and health Shanghai University of Sport Shanghai China
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28
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Tian L, Liu Q, Wang X, Chen S, Li Y. Fighting ferroptosis: Protective effects of dexmedetomidine on vital organ injuries. Life Sci 2024; 354:122949. [PMID: 39127318 DOI: 10.1016/j.lfs.2024.122949] [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: 05/08/2024] [Revised: 07/25/2024] [Accepted: 08/05/2024] [Indexed: 08/12/2024]
Abstract
Vital organ injury is one of the leading causes of global mortality and socio-economic burdens. Current treatments have limited efficacy, and new strategies are needed. Dexmedetomidine (DEX) is a highly selective α2-adrenergic receptor that protects multiple organs by reducing inflammation and preventing cell death. However, its exact mechanism is not yet fully understood. Understanding the underlying molecular mechanisms of its protective effects is crucial as it could provide a basis for designing highly targeted and more effective drugs. Ferroptosis is the primary mode of cell death during organ injury, and recent studies have shown that DEX can protect vital organs from this process. This review provides a detailed analysis of preclinical in vitro and in vivo studies and gains a better understanding of how DEX protects against vital organ injuries by inhibiting ferroptosis. Our findings suggest that DEX can potentially protect vital organs mainly by regulating iron metabolism and the antioxidant defense system. This is the first review that summarizes all evidence of ferroptosis's role in DEX's protective effects against vital organ injuries. Our work aims to provide new insights into organ therapy with DEX and accelerate its translation from the laboratory to clinical settings.
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Affiliation(s)
- Lei Tian
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Qian Liu
- Department of Anesthesiology, Zigong First People's Hospital, Zigong, China
| | - Xing Wang
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Suheng Chen
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Yulan Li
- Department of Anesthesiology, The First Hospital of Lanzhou University, Lanzhou, China.
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29
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Madreiter-Sokolowski CT, Hiden U, Krstic J, Panzitt K, Wagner M, Enzinger C, Khalil M, Abdellatif M, Malle E, Madl T, Osto E, Schosserer M, Binder CJ, Olschewski A. Targeting organ-specific mitochondrial dysfunction to improve biological aging. Pharmacol Ther 2024; 262:108710. [PMID: 39179117 DOI: 10.1016/j.pharmthera.2024.108710] [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: 04/27/2024] [Revised: 08/09/2024] [Accepted: 08/20/2024] [Indexed: 08/26/2024]
Abstract
In an aging society, unveiling new anti-aging strategies to prevent and combat aging-related diseases is of utmost importance. Mitochondria are the primary ATP production sites and key regulators of programmed cell death. Consequently, these highly dynamic organelles play a central role in maintaining tissue function, and mitochondrial dysfunction is a pivotal factor in the progressive age-related decline in cellular homeostasis and organ function. The current review examines recent advances in understanding the interplay between mitochondrial dysfunction and organ-specific aging. Thereby, we dissect molecular mechanisms underlying mitochondrial impairment associated with the deterioration of organ function, exploring the role of mitochondrial DNA, reactive oxygen species homeostasis, metabolic activity, damage-associated molecular patterns, biogenesis, turnover, and dynamics. We also highlight emerging therapeutic strategies in preclinical and clinical tests that are supposed to rejuvenate mitochondrial function, such as antioxidants, mitochondrial biogenesis stimulators, and modulators of mitochondrial turnover and dynamics. Furthermore, we discuss potential benefits and challenges associated with the use of these interventions, emphasizing the need for organ-specific approaches given the unique mitochondrial characteristics of different tissues. In conclusion, this review highlights the therapeutic potential of addressing mitochondrial dysfunction to mitigate organ-specific aging, focusing on the skin, liver, lung, brain, skeletal muscle, and lung, as well as on the reproductive, immune, and cardiovascular systems. Based on a comprehensive understanding of the multifaceted roles of mitochondria, innovative therapeutic strategies may be developed and optimized to combat biological aging and promote healthy aging across diverse organ systems.
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Affiliation(s)
| | - Ursula Hiden
- Department of Obstetrics and Gynecology, Research Unit of Early Life Determinants, Medical University of Graz, Austria
| | - Jelena Krstic
- Division of Cell Biology, Histology and Embryology, Medical University of Graz, BioTechMed-Graz, Austria
| | - Katrin Panzitt
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Austria
| | - Martin Wagner
- Division of Gastroenterology and Hepatology, Medical University of Graz, Austria
| | | | - Michael Khalil
- Department of Neurology, Medical University of Graz, Austria
| | - Mahmoud Abdellatif
- Division of Cardiology, Medical University of Graz, BioTechMed-Graz, Austria
| | - Ernst Malle
- Division of Molecular Biology and Biochemistry, Medical University of Graz, BioTechMed-Graz, Austria
| | - Tobias Madl
- Division of Medicinal Chemistry, Medical University of Graz, BioTechMed-Graz, Austria
| | - Elena Osto
- Division of Physiology and Pathophysiology, Medical University of Graz
| | - Markus Schosserer
- Center for Pathobiochemistry and Genetics, Medical University of Vienna, Austria; Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence, Austria
| | - Christoph J Binder
- Department of Laboratory Medicine, Medical University of Vienna, Austria
| | - Andrea Olschewski
- Department of Anesthesiology and Intensive Care Medicine, LBI for Lung Vascular Research, Medical University of Graz, Austria.
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Brogyanyi T, Kejík Z, Veselá K, Dytrych P, Hoskovec D, Masařik M, Babula P, Kaplánek R, Přibyl T, Zelenka J, Ruml T, Vokurka M, Martásek P, Jakubek M. Iron chelators as mitophagy agents: Potential and limitations. Biomed Pharmacother 2024; 179:117407. [PMID: 39265234 DOI: 10.1016/j.biopha.2024.117407] [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: 06/14/2024] [Revised: 08/26/2024] [Accepted: 09/02/2024] [Indexed: 09/14/2024] Open
Abstract
Mitochondrial autophagy (mitophagy) is very important process for the maintenance of cellular homeostasis, functionality and survival. Its dysregulation is associated with high risk and progression numerous serious diseases (e.g., oncological, neurodegenerative and cardiovascular ones). Therefore, targeting mitophagy mechanisms is very hot topic in the biological and medicinal research. The interrelationships between the regulation of mitophagy and iron homeostasis are now becoming apparent. In short, mitochondria are central point for the regulation of iron homeostasis, but change in intracellular cheatable iron level can induce/repress mitophagy. In this review, relationships between iron homeostasis and mitophagy are thoroughly discussed and described. Also, therapeutic applicability of mitophagy chelators in the context of individual diseases is comprehensively and critically evaluated.
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Affiliation(s)
- Tereza Brogyanyi
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic; Institute of Pathological Physiology, First Faculty of Medicine, Charles University in Prague, U Nemocnice 5, 1, Prague 28 53, Czech Republic
| | - Zdeněk Kejík
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic
| | - Kateřina Veselá
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic
| | - Petr Dytrych
- 1st Department of Surgery-Department of Abdominal, Thoracic Surgery and Traumatology, First Faculty of Medicine, Charles University and General University Hospital, U Nemocnice 2, Prague 121 08, Czech Republic
| | - David Hoskovec
- 1st Department of Surgery-Department of Abdominal, Thoracic Surgery and Traumatology, First Faculty of Medicine, Charles University and General University Hospital, U Nemocnice 2, Prague 121 08, Czech Republic
| | - Michal Masařik
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic; Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Brno CZ-625 00, Czech Republic; Department of Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Brno 625 00, Czech Republic
| | - Petr Babula
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Brno CZ-625 00, Czech Republic
| | - Robert Kaplánek
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic
| | - Tomáš Přibyl
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague, Prague 166 28, Czech Republic
| | - Jaroslav Zelenka
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague, Prague 166 28, Czech Republic
| | - Tomáš Ruml
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague, Prague 166 28, Czech Republic
| | - Martin Vokurka
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University in Prague, U Nemocnice 5, 1, Prague 28 53, Czech Republic
| | - Pavel Martásek
- Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic
| | - Milan Jakubek
- BIOCEV, First Faculty of Medicine, Charles University, Vestec 252 50, Czech Republic; Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital, Prague 120 00, Czech Republic.
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Yu JF, Wen Y, Li M. An Active Self-Mitochondria-Targeting Cyanine Immunomodulator for Near-Infrared II Fluorescence Imaging-Guided Synergistic Photodynamic Immunotherapy. Adv Healthc Mater 2024; 13:e2401061. [PMID: 38849128 DOI: 10.1002/adhm.202401061] [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: 03/29/2024] [Revised: 06/05/2024] [Indexed: 06/09/2024]
Abstract
Photodynamic therapy targeting mitochondria represents a promising therapeutic strategy for fighting diverse types of cancers. However, the currently available photosensitizers (PSs) suffer from insufficient therapeutic potency, limited mitochondria delivery efficiency, and the inability to treat invisible metastatic distal cancers. Herein, an active self-mitochondria-targeting heptapeptide cyanine (HCy) immunomodulator (I2HCy-QAP) is reported for near-infrared II (NIR-II) fluorescence imaging-guided photodynamic immunotherapy of primary and distal metastatic cancers. The I2HCy-QAP is designed by introducing a quaternary ammonium salt with a phenethylamine skeleton (QAP) into the iodinated HCy photosensitizer. The I2HCy-QAP can precisely target mitochondria due to the lipophilic cationic QAP unit, present strong NIR-II fluorescence tail emission, and effectively generate singlet oxygen 1O2 under NIR laser irradiation, thereby inducing mitochondria-targeted damages and eliciting strong systemic immunogenic cell death immune responses. The combination of the I2HCy-QAP-mediated photodynamic immunotherapy with anti-programmed death-1 antibody therapy achieves remarkable therapeutic efficacy against both primary and distal metastatic cancers with significant inhibition of lung metastasis in a triple-negative breast cancer model. This work provides a new concept for designing high-performance NIR emissive cyanine immunomodulators for NIR-II fluorescence-guided photodynamic immunotherapy.
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Affiliation(s)
- Jin-Feng Yu
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Yu Wen
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
- Furong Laboratory, Central South University, Changsha, Hunan, 410008, China
| | - Ming Li
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
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Abbasi Moajani F, Soozangar N, Amani M, Jeddi F, Salimnejad R, Aslani MR. The suppressive effects of crocin from saffron on allergic airway inflammation through Drp1/Nfr1/Mfn2/Pgc1-alpha signaling pathway in mice. JOURNAL OF ETHNOPHARMACOLOGY 2024; 337:118862. [PMID: 39326816 DOI: 10.1016/j.jep.2024.118862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 09/21/2024] [Accepted: 09/24/2024] [Indexed: 09/28/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Saffron is derived from the dried stigmas of Crocus sativus L., which was considered by ancient nations for food and medicinal purposes. In traditional medicine, the therapeutic use of Crocus sativus includes antispasmodic, antitussive and expectorant. AIM OF THE STUDY Mitochondrial fusion, fission, biogenesis, and mitophagy are essential processes for maintaining mitochondrial dynamics in response to cellular stress. The primary objective of this research was to examine how crocin affected the levels of important mitochondrial regulators, including Drp1, Pgc1α, Nrf1, and Mfn2, in the lung tissue of ovalbumin-sensitized mice. MATERIALS AND METHODS A total of fifty male BALB/C mice were randomly assigned to five unique groups (n = 10 for each group), including the control group, ovalbumin-sensitized group (OVA), OVA group treated with 30 mg/kg of crocin, OVA group treated with 60 mg/kg of crocin, and OVA group treated with 1 mg/kg of dexamethasone. Post-sensitization and ovalbumin challenge, mice lung tissues were evaluated for the expression of Drp1, Pgc1α, Nrf1, and Mfn2 mRNA levels using real-time PCR as well as histopathological assessments. RESULTS In the OVA group, there was a significant elevated in inflammatory cells such as eosinophils, neutrophils, macrophages, and lymphocytes; however, crocin (both concentrations) and dexamethasone intervention showed significant inhibitory effects (P < 0.01 to P < 0.001). Moreover, an increase in the expression of Drp1, Pgc1α, and Nrf1 levels was seen in the OVA group, while crocin and dexamethasone showed protective benefits (P < 0.05 to P < 0.001). Furthermore, the levels of Mfn2 were reduced in the lung tissue of mice exposed to ovalbumin, but this decrease was reversed by crocin 60 (P < 0.05) and dexamethasone treatment (P < 0.001). CONCLUSION In mice with OVA sensitization, the balance of mitochondrial dynamics in lung tissue was disrupted, but intervention of crocin identified to have a protective effect.
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Affiliation(s)
- Fatima Abbasi Moajani
- Lung Diseases Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Narges Soozangar
- Zoonoses Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Mojtaba Amani
- Lung Diseases Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Farhad Jeddi
- Department of Genetics and Pathology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Ramin Salimnejad
- Department of Anatomical Sciences, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Mohammad Reza Aslani
- Lung Diseases Research Center, Ardabil University of Medical Sciences, Ardabil, Iran; Department of Physiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
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Delpino MV, Quarleri J. Aging mitochondria in the context of SARS-CoV-2: exploring interactions and implications. FRONTIERS IN AGING 2024; 5:1442323. [PMID: 39380657 PMCID: PMC11458564 DOI: 10.3389/fragi.2024.1442323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Accepted: 09/16/2024] [Indexed: 10/10/2024]
Abstract
The coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has presented global challenges with a diverse clinical spectrum, including severe respiratory complications and systemic effects. This review explores the intricate relationship between mitochondrial dysfunction, aging, and obesity in COVID-19. Mitochondria are vital for cellular energy provision and resilience against age-related macromolecule damage accumulation. They manage energy allocation in cells, activating adaptive responses and stress signals such as redox imbalance and innate immunity activation. As organisms age, mitochondrial function diminishes. Aging and obesity, linked to mitochondrial dysfunction, compromise the antiviral response, affecting the release of interferons, and worsening COVID-19 severity. Furthermore, the development of post-acute sequelae of SARS-CoV-2 infection (PASC), also known as long COVID has been associated with altered energy metabolism, and chronic immune dysregulation derived from mitochondrial dysfunction. Understanding the interplay between mitochondria, aging, obesity, and viral infections provides insights into COVID-19 pathogenesis. Targeting mitochondrial health may offer potential therapeutic strategies to mitigate severe outcomes and address long-term consequences in infected individuals.
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Zaninello M, Baptista P, Duarte FV. Mitochondrial Dynamics and mRNA Translation: A Local Synaptic Tale. BIOLOGY 2024; 13:746. [PMID: 39336173 PMCID: PMC11428642 DOI: 10.3390/biology13090746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2024] [Revised: 09/17/2024] [Accepted: 09/19/2024] [Indexed: 09/30/2024]
Abstract
Mitochondria are dynamic organelles that can adjust and respond to different stimuli within a cell. This plastic ability allows them to effectively coordinate several cellular functions in cells and becomes particularly relevant in highly complex cells such as neurons. An imbalance in mitochondrial dynamics can disrupt mitochondrial function, leading to abnormal cellular function and ultimately to a range of diseases, including neurodegenerative disorders. Regulation of mRNA transport and local translation inside neurons is crucial for maintaining the proteome of distal mitochondria, which is vital for energy production and synaptic function. A significant portion of the axonal transcriptome is dedicated to mRNAs for mitochondrial proteins, emphasizing the importance of local translation in sustaining mitochondrial function in areas far from the cell body. In neurons, local translation and the regulation of mRNAs encoding mitochondrial-shaping proteins could be essential for synaptic plasticity and neuronal health. The dynamics of these mRNAs, including their transport and local translation, may influence the morphology and function of mitochondria, thereby affecting the overall energy status and responsiveness of synapses. Comprehending the mitochondria-related mRNA regulation and local translation, as well as its influence on mitochondrial morphology near the synapses will help to better understand neuronal physiology and neurological diseases where mitochondrial dysfunction and impaired synaptic plasticity play a central role.
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Affiliation(s)
- Marta Zaninello
- Institute for Genetics, University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), 50931 Cologne, Germany
| | - Pedro Baptista
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, 3004-504 Coimbra, Portugal
| | - Filipe V Duarte
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, 3004-504 Coimbra, Portugal
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Tufail M, Jiang CH, Li N. Altered metabolism in cancer: insights into energy pathways and therapeutic targets. Mol Cancer 2024; 23:203. [PMID: 39294640 PMCID: PMC11409553 DOI: 10.1186/s12943-024-02119-3] [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: 08/14/2024] [Accepted: 09/09/2024] [Indexed: 09/21/2024] Open
Abstract
Cancer cells undergo significant metabolic reprogramming to support their rapid growth and survival. This study examines important metabolic pathways like glycolysis, oxidative phosphorylation, glutaminolysis, and lipid metabolism, focusing on how they are regulated and their contributions to the development of tumors. The interplay between oncogenes, tumor suppressors, epigenetic modifications, and the tumor microenvironment in modulating these pathways is examined. Furthermore, we discuss the therapeutic potential of targeting cancer metabolism, presenting inhibitors of glycolysis, glutaminolysis, the TCA cycle, fatty acid oxidation, LDH, and glucose transport, alongside emerging strategies targeting oxidative phosphorylation and lipid synthesis. Despite the promise, challenges such as metabolic plasticity and the need for combination therapies and robust biomarkers persist, underscoring the necessity for continued research in this dynamic field.
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Affiliation(s)
- Muhammad Tufail
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Can-Hua Jiang
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China
- Institute of Oral Precancerous Lesions, Central South University, Changsha, China
- Research Center of Oral and Maxillofacial Tumor, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Ning Li
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China.
- Institute of Oral Precancerous Lesions, Central South University, Changsha, China.
- Research Center of Oral and Maxillofacial Tumor, Xiangya Hospital, Central South University, Changsha, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
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Elmorsy EM, Al-Ghafari AB, Al Doghaither HA, Fawzy MS, Shehata SA. Neurotoxic mechanisms of dexamethasone in SH-SY5Y neuroblastoma cells: Insights into bioenergetics, oxidative stress, and apoptosis. Steroids 2024; 212:109514. [PMID: 39303897 DOI: 10.1016/j.steroids.2024.109514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 09/16/2024] [Accepted: 09/17/2024] [Indexed: 09/22/2024]
Abstract
Despite the known therapeutic uses of dexamethasone (DEX), the specific mechanisms underlying its neurotoxic effects in neuronal cells, particularly in undifferentiated human neuroblastoma (SH-SY5Y) cells, remain inadequately understood. This study aims to elucidate these mechanisms, emphasizing bioenergetics, oxidative stress, and apoptosis, thereby providing novel insights into the cellular vulnerabilities induced by chronic DEX exposure. The findings revealed significant reductions in cell viability, altered membrane integrity with LDH leakage, decreased intracellular ATP production, and the electron transport chain complexes I and III activity inhibition. DEX significantly increased the release of the reactive species and peroxidation of lipids, as well as of Nrf2 expression. At the same time, it simultaneously led to a decline in the activities of the antioxidant catalase and superoxide dismutase enzymes, along with a depletion of glutathione reserves. The apoptosis process was exhibited by a significant elevation of caspases 3 and 8 activities with overexpression of mRNA BAX, inhibition of BCL-2, and a significant upregulation of the BAX/BCL-2 ratio. Assessment of neuronal development genes (GAP43, CAMK2A, CAMK2B, TUBB3, and Wnts) by quantitative PCR assay showed increased expression of CAMK2A, CAMK2B, and Wnt3a with a significant reduction in GAP43 mRNA levels. Collectively, this study proved that DEX was cytotoxic to SH-SY5Y via bioenergetic disruption, mitochondrial dysfunction, oxidative stress, and apoptosis.
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Affiliation(s)
- Ekramy M Elmorsy
- Pathology Department, Faculty of Medicine, Northern Border University, Arar 91431, Saudi Arabia; Center for Health Research, Northern Border University, Arar, Saudi Arabia
| | - Ayat B Al-Ghafari
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Huda A Al Doghaither
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Manal S Fawzy
- Department of Biochemistry, Faculty of Medicine, Northern Border University, Arar 91431, Saudi Arabia; Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt.
| | - Shaimaa A Shehata
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt
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Yang W, Lian K, Ye J, Cheng Y, Xu X. Analyses of single-cell and bulk RNA sequencing combined with machine learning reveal the expression patterns of disrupted mitophagy in schizophrenia. Front Psychiatry 2024; 15:1429437. [PMID: 39355378 PMCID: PMC11442249 DOI: 10.3389/fpsyt.2024.1429437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Accepted: 08/29/2024] [Indexed: 10/03/2024] Open
Abstract
Background Mitochondrial dysfunction is an important factor in the pathogenesis of schizophrenia. However, the relationship between mitophagy and schizophrenia remains to be elucidated. Methods Single-cell RNA sequencing datasets of peripheral blood and brain organoids from SCZ patients and healthy controls were retrieved. Mitophagy-related genes that were differentially expressed between the two groups were screened. The diagnostic model based on key mitophagy genes was constructed using two machine learning methods, and the relationship between mitophagy and immune cells was analyzed. Single-cell RNA sequencing data of brain organoids was used to calculate the mitophagy score (Mitoscore). Results We found 7 key mitophagy genes to construct a diagnostic model. The mitophagy genes were related to the infiltration of neutrophils, activated dendritic cells, resting NK cells, regulatory T cells, resting memory T cells, and CD8 T cells. In addition, we identified 12 cell clusters based on the Mitoscore, and the most abundant neurons were further divided into three subgroups. Results at the single-cell level showed that Mitohigh_Neuron established a novel interaction with endothelial cells via SPP1 signaling pathway, suggesting their distinct roles in SCZ pathogenesis. Conclusion We identified a mitophagy signature for schizophrenia that provides new insights into disease pathogenesis and new possibilities for its diagnosis and treatment.
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Affiliation(s)
- Wei Yang
- Department of Psychiatry, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
- Department of Psychiatry, The Second People’s Hospital of Yuxi, Yuxi, Yunnan, China
- Yuxi Hospital affiliated to Kunming University of Science and Technology, Yuxi, Yunnan, China
| | - Kun Lian
- Department of Psychiatry, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
- Department of Neurosurgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jing Ye
- Department of Psychiatry, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yuqi Cheng
- Department of Psychiatry, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
- Schizophrenia Research Program, Yunnan Clinical Research Center for Mental Disorders, Kunming, Yunnan, China
| | - Xiufeng Xu
- Department of Psychiatry, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
- Schizophrenia Research Program, Yunnan Clinical Research Center for Mental Disorders, Kunming, Yunnan, China
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Yang Z, Deng M, Ren L, Fan Z, Yang S, Liu S, Ren X, Gao J, Cheng B, Xia J. Pyroptosis of oral keratinocyte contributes to energy metabolic reprogramming of T cells in oral lichen planus via OPA1-mediated mitochondrial fusion. Cell Death Discov 2024; 10:408. [PMID: 39289349 PMCID: PMC11408637 DOI: 10.1038/s41420-024-02174-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 09/03/2024] [Accepted: 09/05/2024] [Indexed: 09/19/2024] Open
Abstract
Oral lichen planus (OLP) is a chronic inflammatory disease that is associated with an increased risk of carcinogenesis. The typical pathological features of OLP include submucosal T-cell banding, infiltration, and liquefactive degeneration of basal epithelial cells. However, the histological appearance of basal cell death cannot be explained by apoptosis of keratinocytes alone. The aim of this study was to explore a novel mechanism of epithelial cell death, pyroptosis, and its role in the development of OLP. The immunohistochemical results initially revealed pyroptosis in the epithelial cells of OLP. There was significant upregulation of pyroptosis-related inflammatory cytokines, specifically IL-1β. The expression of IL-1β is closely related to the severity of the patient's condition. In vitro, the culture supernatant from epithelial cells and exogenous IL-1β significantly promote the proliferation and activation of T cells. This effect can be inhibited by neutralizing antibody or receptor inhibitor of IL-1β. Stimulation with exogenous IL-1β enhances both glycolysis and oxidative phosphorylation in T cells, with a more pronounced increase in glycolysis. This is due to the regulation of NAD+ availability and mitochondrial dynamics by IL-1β. IL-1β specifically stimulates the expression of optic atrophy 1 (OPA1), particularly L-OPA1, which promotes mitochondrial fusion and increases NAD+ availability. This process upregulated glycolysis in T cells. The knockdown of OPA1 reverses these changes by reducing the proliferation and activation of T cells. In this study, IL-1β promoted OPA1 transcription by activating the NF-κB pathway. The expression of OPA1 is inhibited by the inhibitor of NF-κB pathway. These results suggest that OLP keratinocytes undergo pyroptosis, which then secrete inflammatory factors that activate the NF-κB signaling pathway of T cells. This pathway regulates OPA1-mediated mitochondrial fusion and energy metabolism reprogramming in T cells, contributing to the development of OLP. These findings provide new insights into the mechanisms and therapeutic strategies for OLP.
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Affiliation(s)
- Zaiwu Yang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan Xi Road, Yuexiu District, 510055, Guangzhou, P. R. China
- Guangdong Provincial Key Laboratory of Stomatology, No.74 Zhongshan Second Road, Yuexiu District, 510055, Guangzhou, P. R. China
| | - Miao Deng
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan Xi Road, Yuexiu District, 510055, Guangzhou, P. R. China
- Guangdong Provincial Key Laboratory of Stomatology, No.74 Zhongshan Second Road, Yuexiu District, 510055, Guangzhou, P. R. China
| | - Lin Ren
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan Xi Road, Yuexiu District, 510055, Guangzhou, P. R. China
- Guangdong Provincial Key Laboratory of Stomatology, No.74 Zhongshan Second Road, Yuexiu District, 510055, Guangzhou, P. R. China
| | - Zhaona Fan
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan Xi Road, Yuexiu District, 510055, Guangzhou, P. R. China
- Guangdong Provincial Key Laboratory of Stomatology, No.74 Zhongshan Second Road, Yuexiu District, 510055, Guangzhou, P. R. China
| | - Shiwen Yang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan Xi Road, Yuexiu District, 510055, Guangzhou, P. R. China
- Guangdong Provincial Key Laboratory of Stomatology, No.74 Zhongshan Second Road, Yuexiu District, 510055, Guangzhou, P. R. China
| | - Suyang Liu
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan Xi Road, Yuexiu District, 510055, Guangzhou, P. R. China
- Guangdong Provincial Key Laboratory of Stomatology, No.74 Zhongshan Second Road, Yuexiu District, 510055, Guangzhou, P. R. China
| | - Xianyue Ren
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan Xi Road, Yuexiu District, 510055, Guangzhou, P. R. China
- Guangdong Provincial Key Laboratory of Stomatology, No.74 Zhongshan Second Road, Yuexiu District, 510055, Guangzhou, P. R. China
| | - Jinlong Gao
- Sydney Dental School, Faculty of Medicine and Health, The University of Sydney, Institute of Dental Research, Westmead Centre for Oral Health, Westmead, 2145, Australia
| | - Bin Cheng
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan Xi Road, Yuexiu District, 510055, Guangzhou, P. R. China.
- Guangdong Provincial Key Laboratory of Stomatology, No.74 Zhongshan Second Road, Yuexiu District, 510055, Guangzhou, P. R. China.
| | - Juan Xia
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, No.56 Lingyuan Xi Road, Yuexiu District, 510055, Guangzhou, P. R. China.
- Guangdong Provincial Key Laboratory of Stomatology, No.74 Zhongshan Second Road, Yuexiu District, 510055, Guangzhou, P. R. China.
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Huber T, Horioka-Duplix M, Chen Y, Saca VR, Ceraudo E, Chen Y, Sakmar TP. The role of signaling pathways mediated by the GPCRs CysLTR1/2 in melanocyte proliferation and senescence. Sci Signal 2024; 17:eadp3967. [PMID: 39288219 DOI: 10.1126/scisignal.adp3967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 08/15/2024] [Indexed: 09/19/2024]
Abstract
In contrast with sun exposure-induced melanoma, rarer melanocytic tumors and neoplasms with low mutational burden present opportunities to study isolated signaling mechanisms. These include uveal melanoma and blue nevi, which are often driven by mutations within the G protein-coupled signaling cascade downstream of cysteinyl leukotriene receptor 2. Here, we review how the same mutations within this pathway drive the growth of melanocytes in one tissue but can inhibit the growth of those in another, exemplifying the role of the tissue environment in the delicate balance between uncontrolled cell growth and senescence.
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Affiliation(s)
- Thomas Huber
- Laboratory of Chemical Biology and Signal Transduction, Rockefeller University, New York, NY 10065, USA
| | - Mizuho Horioka-Duplix
- Laboratory of Chemical Biology and Signal Transduction, Rockefeller University, New York, NY 10065, USA
- Tri-Institutional PhD Program in Chemical Biology, New York, NY 10065, USA
| | - Yuanhuang Chen
- Laboratory of Chemical Biology and Signal Transduction, Rockefeller University, New York, NY 10065, USA
- Tri-Institutional PhD Program in Chemical Biology, New York, NY 10065, USA
| | - Victoria R Saca
- Laboratory of Chemical Biology and Signal Transduction, Rockefeller University, New York, NY 10065, USA
- Tri-Institutional PhD Program in Chemical Biology, New York, NY 10065, USA
| | - Emilie Ceraudo
- Laboratory of Chemical Biology and Signal Transduction, Rockefeller University, New York, NY 10065, USA
| | - Yu Chen
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Thomas P Sakmar
- Laboratory of Chemical Biology and Signal Transduction, Rockefeller University, New York, NY 10065, USA
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Zhang L, Chen Y, Pan Q, Fang S, Zhang Z, Wang J, Yang Y, Yang D, Sun X. Silencing of PCK1 mitigates the proliferation and migration of vascular smooth muscle cells and vascular intimal hyperplasia by suppressing STAT3/DRP1-mediated mitochondrial fission. Acta Biochim Biophys Sin (Shanghai) 2024. [PMID: 39262325 DOI: 10.3724/abbs.2024154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024] Open
Abstract
The pathological proliferation and migration of vascular smooth muscle cells (VSMCs) are key processes during vascular neointimal hyperplasia (NIH) and restenosis. Phosphoenolpyruvate carboxy kinase 1 (PCK1) is closely related to a variety of malignant proliferative diseases. However, the role of PCK1 in VSMCs has rarely been investigated. This study aims to examine the role of PCK1 in the proliferation and migration of VSMCs and vascular NIH after injury. In vivo, extensive NIH and increased expression of PCK1 within the neointima are observed in injured arteries. Interestingly, the administration of adeno-associated virus-9 (AAV-9) carrying Pck1 short hairpin RNA (sh Pck1) significantly attenuates NIH and stenosis of the vascular lumen. In vitro, Pck1 small interfering RNA (si Pck1)-induced PCK1 silencing inhibits VSMC proliferation and migration. Additionally, silencing of PCK1 leads to reduced expression of dynamin-related protein 1 (DRP1) and attenuated mitochondrial fission. Lentivirus-mediated DRP1 overexpression markedly reverses the inhibitory effects of PCK1 silencing on VSMC proliferation, migration, and mitochondrial fission. Finally, PCK1 inhibition attenuates the phosphorylation of signal transducer and activator of transcription 3 (STAT3). Activation of STAT3 abolishes the suppressive effects of PCK1 silencing on DRP1 expression, mitochondrial fission, proliferation, and migration in VSMCs. In conclusion, PCK1 inhibition attenuates the mitochondrial fission, proliferation, and migration of VSMCs by inhibiting the STAT3/DRP1 axis, thereby suppressing vascular NIH and restenosis.
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Affiliation(s)
- Li Zhang
- Department of Cardiology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - Yingmei Chen
- Department of Cardiology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - Quanrong Pan
- Department of General Practice, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - Shizheng Fang
- Department of Critical Care Medicine, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - Zhongjian Zhang
- Department of Cardiology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - Jia Wang
- Department of Cardiology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - Yongjian Yang
- Department of Cardiology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - Dachun Yang
- Department of Cardiology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - Xiongshan Sun
- Department of Cardiology, the General Hospital of Western Theater Command, Chengdu 610083, China
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Clark C, Barzegar Behrooz A, da Sila Rosa SC, Jacobs J, Weng X, Srivastava A, Vitorino R, Ande SR, Ravandi A, Dhingra S, Pecic S, Miller D, Shojaei S, Ghavami S. BCL2L13 Influences Autophagy and Ceramide Metabolism without Affecting Temozolomide Resistance in Glioblastoma. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.23.609447. [PMID: 39253475 PMCID: PMC11383306 DOI: 10.1101/2024.08.23.609447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/11/2024]
Abstract
Temozolomide (TMZ) resistance in glioblastoma (GB) poses a significant therapeutic challenge. We developed a TMZ-resistant (TMZ-R) U251 GB model, revealing distinct differences in cell viability, apoptosis, autophagy, and lipid metabolism between TMZ-R and non-resistant (TMZ-NR) cells. TMZ-NR cells exhibited heightened sensitivity to TMZ-induced apoptosis, while TMZ-R cells-maintained viability. Autophagy flux was completely inhibited in TMZ-R cells, indicated by LC3βII and SQSTM1 accumulation. BCL2L13, which showed higher expression in TMZ-R cells, demonstrated increased interaction with Ceramide Synthase 6 (CerS6) and reduced interaction with Ceramide Synthase 2 (CerS2) in TMZ-NR cells. BCL2L13 knockdown (KD) disrupted autophagy flux, decreasing autophagosome accumulation in TMZ-R cells while increasing it in TMZ-NR cells. These changes contributed to altered ceramide profiles, where TMZ-R cells displayed elevated levels of Cer 16:0, 18:0, 20:0, 22:0, 24:0, and 24:1. Our findings highlight BCL2L13 and altered ceramide metabolism as potential therapeutic targets to overcome TMZ resistance in GB.
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Ouyang W, Yan D, Hu J, Liu Z. Multifaceted mitochondrial as a novel therapeutic target in dry eye: insights and interventions. Cell Death Discov 2024; 10:398. [PMID: 39242592 PMCID: PMC11379830 DOI: 10.1038/s41420-024-02159-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 08/20/2024] [Accepted: 08/22/2024] [Indexed: 09/09/2024] Open
Abstract
Dry eye, recognized as the most prevalent ocular surface disorder, has risen to prominence as a significant public health issue, adversely impacting the quality of life for individuals across the globe. Despite decades of extensive research into the chronic inflammation that characterizes dry eye, the intricate mechanisms fueling this persistent inflammatory state remain incompletely understood. Among the various cellular components under investigation, mitochondria-essential for cellular energy production and homeostasis-have attracted increasing attention for their role in dry eye pathogenesis. This involvement points to mechanisms such as oxidative stress, apoptosis, and sustained inflammation, which are central to the progression of the disease. This review aims to provide a thorough exploration of mitochondrial dysfunction in dry eye, shedding light on the critical roles played by mitochondrial oxidative stress, apoptosis, and mitochondrial DNA damage. It delves into the mechanisms through which diverse pathogenic factors may trigger mitochondrial dysfunction, thereby contributing to the onset and exacerbation of dry eye. Furthermore, it lays the groundwork for an overview of current therapeutic strategies that specifically target mitochondrial dysfunction, underscoring their potential in managing this complex condition. By spotlighting this burgeoning area of research, our review seeks to catalyze the development of innovative drug discovery and therapeutic approaches. The ultimate goal is to unlock promising avenues for the future management of dry eye, potentially revolutionizing treatment paradigms and improving patient outcomes. Through this comprehensive examination, we endeavor to enrich the scientific community's understanding of dry eye and inspire novel interventions that address the underlying mitochondrial dysfunctions contributing to this widespread disorder.
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Affiliation(s)
- Weijie Ouyang
- Xiamen University affiliated Xiamen Eye Center, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Fujian Engineering and Research Center of Eye Regenerative Medicine, Eye Institute of Xiamen University, School of Medicine of Xiamen University, Xiamen, Fujian, China; Department of Ophthalmology, the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Dan Yan
- Xiamen University affiliated Xiamen Eye Center, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Fujian Engineering and Research Center of Eye Regenerative Medicine, Eye Institute of Xiamen University, School of Medicine of Xiamen University, Xiamen, Fujian, China
| | - Jiaoyue Hu
- Xiamen University affiliated Xiamen Eye Center, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Fujian Engineering and Research Center of Eye Regenerative Medicine, Eye Institute of Xiamen University, School of Medicine of Xiamen University, Department of Ophthalmology of Xiang'an Hospital of Xiamen University, Xiamen, Fujian, China.
| | - Zuguo Liu
- Xiamen University affiliated Xiamen Eye Center, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Fujian Engineering and Research Center of Eye Regenerative Medicine, Eye Institute of Xiamen University, School of Medicine of Xiamen University, Department of Ophthalmology of Xiang'an Hospital of Xiamen University, Xiamen, Fujian, China; Department of Ophthalmology, the First Affiliated Hospital of University of South China, University of South China, Hengyang, Hunan, China.
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43
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Xie W, Koppula S, Kale MB, Ali LS, Wankhede NL, Umare MD, Upaganlawar AB, Abdeen A, Ebrahim EE, El-Sherbiny M, Behl T, Shen B, Singla RK. Unraveling the nexus of age, epilepsy, and mitochondria: exploring the dynamics of cellular energy and excitability. Front Pharmacol 2024; 15:1469053. [PMID: 39309002 PMCID: PMC11413492 DOI: 10.3389/fphar.2024.1469053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Accepted: 08/20/2024] [Indexed: 09/25/2024] Open
Abstract
Epilepsy, a complex neurological condition marked by recurring seizures, is increasingly recognized for its intricate relationship with mitochondria, the cellular powerhouses responsible for energy production and calcium regulation. This review offers an in-depth examination of the interplay between epilepsy, mitochondrial function, and aging. Many factors might account for the correlation between epilepsy and aging. Mitochondria, integral to cellular energy dynamics and neuronal excitability, perform a critical role in the pathophysiology of epilepsy. The mechanisms linking epilepsy and mitochondria are multifaceted, involving mitochondrial dysfunction, reactive oxygen species (ROS), and mitochondrial dynamics. Mitochondrial dysfunction can trigger seizures by compromising ATP production, increasing glutamate release, and altering ion channel function. ROS, natural byproducts of mitochondrial respiration, contribute to oxidative stress and neuroinflammation, critical factors in epileptogenesis. Mitochondrial dynamics govern fusion and fission processes, influence seizure threshold and calcium buffering, and impact seizure propagation. Energy demands during seizures highlight the critical role of mitochondrial ATP generation in maintaining neuronal membrane potential. Mitochondrial calcium handling dynamically modulates neuronal excitability, affecting synaptic transmission and action potential generation. Dysregulated mitochondrial calcium handling is a hallmark of epilepsy, contributing to excitotoxicity. Epigenetic modifications in epilepsy influence mitochondrial function through histone modifications, DNA methylation, and non-coding RNA expression. Potential therapeutic avenues targeting mitochondria in epilepsy include mitochondria-targeted antioxidants, ketogenic diets, and metabolic therapies. The review concludes by outlining future directions in epilepsy research, emphasizing integrative approaches, advancements in mitochondrial research, and ethical considerations. Mitochondria emerge as central players in the complex narrative of epilepsy, offering profound insights and therapeutic potential for this challenging neurological disorder.
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Affiliation(s)
- Wen Xie
- Department of Pharmacy and Institutes for Systems Genetics, Center for High Altitude Medicine, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Sushruta Koppula
- College of Biomedical and Health Sciences, Konkuk University, Chungju-Si, Republic of Korea
| | - Mayur B. Kale
- Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, India
| | - Lashin S. Ali
- Department of Basic Medical Sciences, Faculty of Dentistry, Al-Ahliyya Amman University, Amman, Jordan
| | | | - Mohit D. Umare
- Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, India
| | | | - Ahmed Abdeen
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Benha University, Toukh, Egypt
| | - Elturabi E. Ebrahim
- Medical-Surgical Nursing Department, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Mohamed El-Sherbiny
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, Riyadh, Saudi Arabia
- Department of Anatomy, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Tapan Behl
- Amity School of Pharmaceutical Sciences, Amity University, Mohali, India
| | - Bairong Shen
- Institutes for Systems Genetics, West China Tianfu Hospital, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Rajeev K. Singla
- Department of Pharmacy and Institutes for Systems Genetics, Center for High Altitude Medicine, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
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Giacco A, Petito G, Silvestri E, Scopigno N, Vigliotti M, Mercurio G, de Lange P, Lombardi A, Moreno M, Goglia F, Lanni A, Senese R, Cioffi F. Comparative effects of 3,5-diiodo-L-thyronine and 3,5,3'-triiodo-L-thyronine on mitochondrial damage and cGAS/STING-driven inflammation in liver of hypothyroid rats. Front Endocrinol (Lausanne) 2024; 15:1432819. [PMID: 39301315 PMCID: PMC11410700 DOI: 10.3389/fendo.2024.1432819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Accepted: 08/07/2024] [Indexed: 09/22/2024] Open
Abstract
Maintaining a well-functioning mitochondrial network through the mitochondria quality control (MQC) mechanisms, including biogenesis, dynamics and mitophagy, is crucial for overall health. Mitochondrial dysfunction caused by oxidative stress and further exacerbated by impaired quality control can trigger inflammation through the release of the damage-associated molecular patterns (mtDAMPs). mtDAMPs act by stimulating the cyclic GMP-AMP synthase (cGAS) stimulator of interferon genes (STING) pathway. Recently, aberrant signalling of the cGAS-STING axis has been recognised to be closely associated with several sterile inflammatory diseases (e.g. non-alcoholic fatty liver disease, obesity). This may fit the pathophysiology of hypothyroidism, an endocrine disorder characterised by the reduction of thyroid hormone production associated with impaired metabolic fluxes, oxidative balance and inflammatory status. Both 3,5,3'-triiodo-L-tyronine (T3) and its derivative 3,5-diiodo-L-thyronine (3,5-T2), are known to mitigate processes targeting mitochondria, albeit the underlying mechanisms are not yet fully understood. Therefore, we used a chemically induced hypothyroidism rat model to investigate the effect of 3,5-T2 or T3 administration on inflammation-related factors (inflammatory cytokines, hepatic cGAS-STING pathway), oxidative stress, antioxidant defence enzymes, mitochondrial DNA (mtDNA) damage, release and repair, and the MQC system in the liver. Hypothyroid rats showed: i) increased oxidative stress, ii) accumulation of mtDNA damage, iii) high levels of circulating cytokines, iv) hepatic activation of cGAS-STING pathways and v) impairment of MQC mechanisms and autophagy. Both iodothyronines restored oxidative balance by enhancing antioxidant defence, preventing mtDNA damage through the activation of mtDNA repair mechanisms (OGG1, APE1, and POLγ) and promoting autophagy progression. Concerning MQC, both iodothyronines stimulated mitophagy and dynamics, with 3,5-T2 activating fusion and T3 modulating both fusion and fission processes. Moreover, only T3 enhanced mitochondrial biogenesis. Notably, 3,5-T2, but not T3, reversed the hypothyroidism-induced activation of the cGAS-STING inflammatory cascade. In addition, it is noteworthy that 3,5-T2 seems more effective than T3 in reducing circulating pro-inflammatory cytokines IL-6 and IL-1B and in stimulating the release of IL-10, a known anti-inflammatory cytokine. These findings reveal novel molecular mechanisms of hepatic signalling pathways involved in hypothyroidism, which could be targeted by natural iodothyronines, particularly 3,5-T2, paving the way for the development of new treatment strategies for inflammatory diseases.
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Affiliation(s)
- Antonia Giacco
- Department of Science and Technologies, University of Sannio, Benevento, Italy
| | - Giuseppe Petito
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", Caserta, Italy
| | - Elena Silvestri
- Department of Science and Technologies, University of Sannio, Benevento, Italy
| | - Nicla Scopigno
- Department of Science and Technologies, University of Sannio, Benevento, Italy
| | - Michela Vigliotti
- Department of Science and Technologies, University of Sannio, Benevento, Italy
| | - Giovanna Mercurio
- Department of Science and Technologies, University of Sannio, Benevento, Italy
| | - Pieter de Lange
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", Caserta, Italy
| | - Assunta Lombardi
- Department of Biology, University of Naples Federico II, Napoli, Italy
| | - Maria Moreno
- Department of Science and Technologies, University of Sannio, Benevento, Italy
| | - Fernando Goglia
- Department of Science and Technologies, University of Sannio, Benevento, Italy
| | - Antonia Lanni
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", Caserta, Italy
| | - Rosalba Senese
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", Caserta, Italy
| | - Federica Cioffi
- Department of Science and Technologies, University of Sannio, Benevento, Italy
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45
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Chu YL, Pi JC, Yao YF, Chen XY, Peng XP, Li WJ. Polyphenol (-)-Epigallocatechin Gallate (EGCG) mitigated kidney injury by regulating metabolic homeostasis and mitochondrial dynamics involvement with Drp1-mediated mitochondrial fission in mice. Food Chem Toxicol 2024; 191:114906. [PMID: 39095006 DOI: 10.1016/j.fct.2024.114906] [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: 04/09/2024] [Revised: 07/05/2024] [Accepted: 07/30/2024] [Indexed: 08/04/2024]
Abstract
The study aimed to examine effects of (-)-epigallocatechin-3-gallate (EGCG) on energy metabolism and mitochondrial dynamics in mouse model of renal injury caused by doxorubicin (DOX). Here, mice were divided into Control group, EGCG-only treated group, DOX group, and three doses of EGCG plus DOX groups. Our results showed that EGCG behaved beneficial effects against kidney injury via attenuation of pathological changes in kidney tissue, which was confirmed by reducing serum creatinine (SCr), blood urea nitrogen (BUN), and apoptosis. Subsequently, changes in reactive oxygen species generation, malondialdehyde content, and activities of antioxidant enzymes were considerably ameliorated in EGCG + DOX groups when compared to DOX group. Furthermore, EGCG-evoked renal protection was associated with increases of mitochondrial membrane potential and decreases of mitochondrial fission protein Dynamin-related protein 1 (Drp1). Moreover, changing glycolysis into mitochondrial oxidative phosphorylation was observed, evidenced by controlling activities of malate dehydrogenase (MDH) and hexokinase (HK) in EGCG + DOX groups when compared to DOX group, indicating that reprogramming energy metabolism was linked to EGCG-induced renal protection in mice. Therefore, EGCG was demonstrated to have a protective effect against kidney injury by reducing oxidative damage, metabolic disorders, and mitochondrial dysfunction, suggesting that EGCG has potential as a feasible strategy to prevent kidney injury.
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Affiliation(s)
- Yue-Lei Chu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Jin-Chan Pi
- Jinchan Pi, College of Future Technology, Nanchang University, Nanchang, 330031, China
| | - Yu-Fei Yao
- Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, 330006, China
| | - Xuan-Ying Chen
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, 330046, China
| | - Xiao-Ping Peng
- Department of Cardiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University. Nanchang, 330046, China
| | - Wen-Juan Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China.
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46
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Zhang J, Li W, Liu Z, Chen Y, Wei X, Peng L, Xu M, Ji Y. Defective post-transcriptional modification of tRNA disrupts mitochondrial homeostasis in Leber's hereditary optic neuropathy. J Biol Chem 2024; 300:107728. [PMID: 39214298 PMCID: PMC11421333 DOI: 10.1016/j.jbc.2024.107728] [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: 05/13/2024] [Revised: 07/31/2024] [Accepted: 08/16/2024] [Indexed: 09/04/2024] Open
Abstract
Leber's Hereditary Optic Neuropathy (LHON) is a rare, maternally inherited eye disease, predominantly due to the degeneration of retinal ganglion cells (RGCs). It is associated with a mitochondrial DNA (mtDNA) point mutation. Our previous study identified that the m.15927G > A homoplasmic mutation damaged the highly conserved base pairing (28C-42G) in anticodon stem of tRNAThr, caused deficient t6A modification and significantly decreased efficiency in aminoacylation and steady-state levels of tRNAThr, and led to mitochondrial dysfunction. Meanwhile, mechanisms underlying mtDNA mutations regulate intracellular signaling related to mitochondrial and cellular integrity are less explored. Here, we manifested that defective nucleotide modification induced by the m.15927G > A mutation interfered with the expression of nuclear genes involved in cytoplasmic proteins essential for oxidative phosphorylation system (OXPHOS), thereby impacting the assemble and integrity of OXPHOS complexes. As a result of these mitochondrial dysfunctions, there was an imbalance in mitochondrial dynamics, particularly distinguished by an increased occurrence of mitochondrial fission. Excessive fission compromised the autophagy process, including the initiation phase, formation, and maturation of autophagosomes. Both Parkin-mediated mitophagy and receptor-dependent mitophagy were significantly impaired in cybrids haboring the m.15927G > A mutation. These changes facilitated intrinsic apoptosis, as indicated by increased cytochrome c release and elevated levels of apoptosis-associated proteins (e.g., BAK, BAX, cleaved caspase 9, cleaved caspase 3, and cleaved PARP) in the mutant cybrids. This study demonstrates that the m.15927G > A mutation contributes to LHON by dysregulating OXPHOS biogenesis, aberrant quality control, increased autophagy, inhibited mitophagy, and abnormal apoptosis.
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MESH Headings
- Optic Atrophy, Hereditary, Leber/metabolism
- Optic Atrophy, Hereditary, Leber/genetics
- Optic Atrophy, Hereditary, Leber/pathology
- Humans
- Mitochondria/metabolism
- Mitochondria/genetics
- Mitochondria/pathology
- Mitophagy
- Homeostasis
- RNA Processing, Post-Transcriptional
- DNA, Mitochondrial/metabolism
- DNA, Mitochondrial/genetics
- Oxidative Phosphorylation
- RNA, Transfer, Thr/metabolism
- RNA, Transfer, Thr/genetics
- Mitochondrial Dynamics
- Apoptosis
- Point Mutation
- Autophagy
- Ubiquitin-Protein Ligases/metabolism
- Ubiquitin-Protein Ligases/genetics
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Affiliation(s)
- Juanjuan Zhang
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China; Attardi Institute of Mitochondrial Biomedicine, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.
| | - Wenxu Li
- Attardi Institute of Mitochondrial Biomedicine, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhen Liu
- Attardi Institute of Mitochondrial Biomedicine, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yingqi Chen
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiaoyang Wei
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lu Peng
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Man Xu
- Attardi Institute of Mitochondrial Biomedicine, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China; Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yanchun Ji
- Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
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Meng X, Mao H, Wan M, Lu L, Chen Z, Zhang L. Mitochondrial homeostasis in odontoblast: Physiology, pathogenesis and targeting strategies. Life Sci 2024; 352:122797. [PMID: 38917871 DOI: 10.1016/j.lfs.2024.122797] [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: 02/17/2024] [Revised: 04/15/2024] [Accepted: 06/04/2024] [Indexed: 06/27/2024]
Abstract
Caries and pulpitis remain a major global disease burden and affect the quality of life of patients. Odontoblasts are key players in the progression of caries and pulpitis, not only secreting and mineralizing to form dentin, but also acting as a wall of defense to initiate immune defenses. Mitochondrion is an information processor for numerous cellular activities, and dysregulation of mitochondrion homeostasis not only affects cellular metabolism but also triggers a wide range of diseases. Elucidating mitochondrial homeostasis in odontoblasts can help deepen scholars' understanding of odontoblast-associated diseases. Articles on mitochondrial homeostasis in odontoblasts were evaluated for information pertinent to include in this narrative review. This narrative review focused on understanding the complex interplay between mitochondrial homeostasis in odontoblasts under physiological and pathological conditions. Furthermore, mitochondria-centered therapeutic strategies (including mitochondrial base editing, targeting platforms, and mitochondrial transplantation) were emphasized by resolving key genes that regulate mitochondrial function. Mitochondria are involved in odontoblast differentiation and function, and act as mitochondrial danger-associated molecular patterns (mtDAMPs) to mediate odontoblast pathological progression. Novel mitochondria-centered therapeutic strategies are particularly attractive as emerging therapeutic approaches for the maintenance of mitochondrial homeostasis. It is expected to probe key events of odontoblast differentiation and advance the clinical resolution of dentin formation and mineralization disorders and odontoblast-related diseases.
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Affiliation(s)
- Xiang Meng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
| | - Hanqing Mao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
| | - Minting Wan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
| | - Linxin Lu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
| | - Zhi Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; Department of Endodontics, School and Hospital of Stomatology, Wuhan University, HongShan District, LuoYu Road No. 237, Wuhan 430079, China.
| | - Lu Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; Department of Endodontics, School and Hospital of Stomatology, Wuhan University, HongShan District, LuoYu Road No. 237, Wuhan 430079, China.
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48
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Joof AN, Ren F, Zhou Y, Wang M, Li J, Tan Y. Targeting Mitochondria: Influence of Metabolites on Mitochondrial Heterogeneity. Cell Biochem Funct 2024; 42:e4131. [PMID: 39380166 DOI: 10.1002/cbf.4131] [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: 03/14/2024] [Revised: 09/15/2024] [Accepted: 09/18/2024] [Indexed: 10/10/2024]
Abstract
Mitochondria are vital organelles that provide energy for the metabolic processes of cells. These include regulating cellular metabolism, autophagy, apoptosis, calcium ions, and signaling processes. Despite their varying functions, mitochondria are considered semi-independent organelles that possess their own genome, known as mtDNA, which encodes 13 proteins crucial for oxidative phosphorylation. However, their diversity reflects an organism's adaptation to physiological conditions and plays a complex function in cellular metabolism. Mitochondrial heterogeneity exists at the single-cell and tissue levels, impacting cell shape, size, membrane potential, and function. This heterogeneity can contribute to the progression of diseases such as neurodegenerative diseases, metabolic diseases, and cancer. Mitochondrial dynamics enhance the stability of cells and sufficient energy requirement, but these activities are not universal and can lead to uneven mitochondria, resulting in heterogeneity. Factors such as genetics, environmental compounds, and signaling pathways are found to affect these cellular processes and heterogeneity. Additionally, the varying roles of metabolites such as NADH and ATP affect glycolysis's speed and efficiency. An imbalance in metabolites can impair ATP production and redox potential in the mitochondria. Therefore, this review will explore the influence of metabolites in shaping mitochondrial morphology, how these changes contribute to age-related diseases and the therapeutic targets for regulating mitochondrial heterogeneity.
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Affiliation(s)
- Amie N Joof
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
| | - Fangyuan Ren
- Department of Obstetrics, Zhuzhou Hospital Affiliated to Xiangya School of Medicine, Central South University, Changsha, China
| | - Yan Zhou
- Department of Obstetrics, Zhuzhou Hospital Affiliated to Xiangya School of Medicine, Central South University, Changsha, China
| | - Mengyu Wang
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
| | - Jiani Li
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
| | - Yurong Tan
- Department of Medical Microbiology, Central South University Changsha, Changsha, Hunan Province, China
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49
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Klimenko ES, Sukhareva KS, Vlasova Y, Smolina NA, Fomicheva Y, Knyazeva A, Muravyev AS, Sorokina MY, Gavrilova LS, Boldyreva LV, Medvedeva SS, Sejersen T, Kostareva AA. Flnc expression impacts mitochondrial function, autophagy, and calcium handling in C2C12 cells. Exp Cell Res 2024; 442:114174. [PMID: 39089502 DOI: 10.1016/j.yexcr.2024.114174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 07/12/2024] [Accepted: 07/21/2024] [Indexed: 08/04/2024]
Affiliation(s)
- E S Klimenko
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - K S Sukhareva
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - YuA Vlasova
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - N A Smolina
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - YuV Fomicheva
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - A Knyazeva
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - A S Muravyev
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - M Yu Sorokina
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - L S Gavrilova
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
| | - L V Boldyreva
- Scientific-Research Institute of Neurosciences and Medicine, Novosibirsk, Russia; Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - S S Medvedeva
- Scientific-Research Institute of Neurosciences and Medicine, Novosibirsk, Russia; Institute of Molecular and Cellular Biology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - T Sejersen
- Department of Women's and Children's Health, Karolinska Institutet, Department of Child Neurology, Karolinska University Hospital, Astrid Lindgren Children's Hospital, Stockholm, Sweden; Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, Shatin, New Territories, Hong Kong
| | - A A Kostareva
- Almazov National Medical Research Centre, Saint-Petersburg, Russia; Department of Women's and Children's Health, Karolinska Institutet, Department of Child Neurology, Karolinska University Hospital, Astrid Lindgren Children's Hospital, Stockholm, Sweden; Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, Shatin, New Territories, Hong Kong.
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50
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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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