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Headley CA, Gautam S, Olmo‐Fontanez A, Garcia‐Vilanova A, Dwivedi V, Akhter A, Schami A, Chiem K, Ault R, Zhang H, Cai H, Whigham A, Delgado J, Hicks A, Tsao PS, Gelfond J, Martinez‐Sobrido L, Wang Y, Torrelles JB, Turner J. Extracellular Delivery of Functional Mitochondria Rescues the Dysfunction of CD4 + T Cells in Aging. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2303664. [PMID: 37990641 PMCID: PMC10837346 DOI: 10.1002/advs.202303664] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 09/17/2023] [Indexed: 11/23/2023]
Abstract
Mitochondrial dysfunction alters cellular metabolism, increases tissue oxidative stress, and may be principal to the dysregulated signaling and function of CD4+ T lymphocytes in the elderly. In this proof of principle study, it is investigated whether the transfer of functional mitochondria into CD4+ T cells that are isolated from old mice (aged CD4+ T cells), can abrogate aging-associated mitochondrial dysfunction, and improve the aged CD4+ T cell functionality. The results show that the delivery of exogenous mitochondria to aged non-activated CD4+ T cells led to significant mitochondrial proteome alterations highlighted by improved aerobic metabolism and decreased cellular mitoROS. Additionally, mito-transferred aged CD4+ T cells showed improvements in activation-induced TCR-signaling kinetics displaying markers of activation (CD25), increased IL-2 production, enhanced proliferation ex vivo. Importantly, immune deficient mouse models (RAG-KO) showed that adoptive transfer of mito-transferred naive aged CD4+ T cells, protected recipient mice from influenza A and Mycobacterium tuberculosis infections. These findings support mitochondria as targets of therapeutic intervention in aging.
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Affiliation(s)
- Colwyn A. Headley
- Host‐Pathogen Interactions ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
- Biomedical Sciences Graduate ProgramThe Ohio State UniversityColumbusOhio43201USA
- Stanford Cardiovascular InstituteStanford University School of MedicineStanfordCA94305USA
| | - Shalini Gautam
- Host‐Pathogen Interactions ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | | | | | - Varun Dwivedi
- Host‐Pathogen Interactions ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | - Anwari Akhter
- Population Health ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | - Alyssa Schami
- Population Health ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | - Kevin Chiem
- Disease Intervention & Prevention ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | - Russell Ault
- Host‐Pathogen Interactions ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
- Biomedical Sciences Graduate ProgramThe Ohio State UniversityColumbusOhio43201USA
| | - Hao Zhang
- Department of Molecular Microbiology and ImmunologySouth Texas Center for Emerging Infectious DiseasesThe University of Texas at San AntonioSan AntonioTX78249USA
| | - Hong Cai
- Department of Molecular Microbiology and ImmunologySouth Texas Center for Emerging Infectious DiseasesThe University of Texas at San AntonioSan AntonioTX78249USA
| | - Alison Whigham
- Host‐Pathogen Interactions ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | - Jennifer Delgado
- Host‐Pathogen Interactions ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | - Amberlee Hicks
- Host‐Pathogen Interactions ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | - Philip S. Tsao
- Stanford Cardiovascular InstituteStanford University School of MedicineStanfordCA94305USA
| | - Jonathan Gelfond
- UT‐Health San AntonioDepartment of Epidemiology & BiostatisticsSan AntonioTexas78229USA
| | - Luis Martinez‐Sobrido
- Disease Intervention & Prevention ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | - Yufeng Wang
- Department of Molecular Microbiology and ImmunologySouth Texas Center for Emerging Infectious DiseasesThe University of Texas at San AntonioSan AntonioTX78249USA
| | - Jordi B. Torrelles
- Population Health ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
| | - Joanne Turner
- Host‐Pathogen Interactions ProgramTexas Biomedical Research InstituteSan AntonioTexas78227USA
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102
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Alcalá S, Villarino L, Ruiz-Cañas L, Couceiro JR, Martínez-Calvo M, Palencia-Campos A, Navarro D, Cabezas-Sainz P, Rodriguez-Arabaolaza I, Cordero-Barreal A, Trilla-Fuertes L, Rubiolo JA, Batres-Ramos S, Vallespinos M, González-Páramos C, Rodríguez J, Gámez-Pozo A, Vara JÁF, Fernández SF, Berlinches AB, Moreno-Mata N, Redondo AMT, Carrato A, Hermann PC, Sánchez L, Torrente S, Fernández-Moreno MÁ, Mascareñas JL, Sainz B. Targeting cancer stem cell OXPHOS with tailored ruthenium complexes as a new anti-cancer strategy. J Exp Clin Cancer Res 2024; 43:33. [PMID: 38281027 PMCID: PMC10821268 DOI: 10.1186/s13046-023-02931-7] [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: 10/15/2023] [Accepted: 12/11/2023] [Indexed: 01/29/2024] Open
Abstract
BACKGROUND Previous studies by our group have shown that oxidative phosphorylation (OXPHOS) is the main pathway by which pancreatic cancer stem cells (CSCs) meet their energetic requirements; therefore, OXPHOS represents an Achille's heel of these highly tumorigenic cells. Unfortunately, therapies that target OXPHOS in CSCs are lacking. METHODS The safety and anti-CSC activity of a ruthenium complex featuring bipyridine and terpyridine ligands and one coordination labile position (Ru1) were evaluated across primary pancreatic cancer cultures and in vivo, using 8 patient-derived xenografts (PDXs). RNAseq analysis followed by mitochondria-specific molecular assays were used to determine the mechanism of action. RESULTS We show that Ru1 is capable of inhibiting CSC OXPHOS function in vitro, and more importantly, it presents excellent anti-cancer activity, with low toxicity, across a large panel of human pancreatic PDXs, as well as in colorectal cancer and osteosarcoma PDXs. Mechanistic studies suggest that this activity stems from Ru1 binding to the D-loop region of the mitochondrial DNA of CSCs, inhibiting OXPHOS complex-associated transcription, leading to reduced mitochondrial oxygen consumption, membrane potential, and ATP production, all of which are necessary for CSCs, which heavily depend on mitochondrial respiration. CONCLUSIONS Overall, the coordination complex Ru1 represents not only an exciting new anti-cancer agent, but also a molecular tool to dissect the role of OXPHOS in CSCs. Results indicating that the compound is safe, non-toxic and highly effective in vivo are extremely exciting, and have allowed us to uncover unprecedented mechanistic possibilities to fight different cancer types based on targeting CSC OXPHOS.
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Affiliation(s)
- Sonia Alcalá
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - Lara Villarino
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), and Departamento de Química Orgánica, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Laura Ruiz-Cañas
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - José R Couceiro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), and Departamento de Química Orgánica, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Miguel Martínez-Calvo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), and Departamento de Química Orgánica, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Adrián Palencia-Campos
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - Diego Navarro
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - Pablo Cabezas-Sainz
- Department of Zoology, Genetics and Physical Anthropology, Veterinary Faculty, USC, Lugo, Spain
| | - Iker Rodriguez-Arabaolaza
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
- Facultad de Ciencia y Técnología, Universidad del País Vasco, 48940, Leioa (Bizkaia), Spain
| | - Alfonso Cordero-Barreal
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - Lucia Trilla-Fuertes
- Molecular Oncology and Pathology Lab, Instituto de Genética Médica y Molecular-INGEMM, Instituto de Investigación Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Biomedica Molecular Medicine SL, Madrid, Spain
| | - Juan A Rubiolo
- Department of Zoology, Genetics and Physical Anthropology, Veterinary Faculty, USC, Lugo, Spain
| | - Sandra Batres-Ramos
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - Mireia Vallespinos
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - Cristina González-Páramos
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain
| | - Jéssica Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), and Departamento de Química Orgánica, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Angelo Gámez-Pozo
- Molecular Oncology and Pathology Lab, Instituto de Genética Médica y Molecular-INGEMM, Instituto de Investigación Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Biomedica Molecular Medicine SL, Madrid, Spain
| | - Juan Ángel Fresno Vara
- Molecular Oncology and Pathology Lab, Instituto de Genética Médica y Molecular-INGEMM, Instituto de Investigación Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Centro de Investigación Biomédica en Red, Área Cáncer, CIBERONC, ISCIII, Madrid, Spain
| | - Sara Fra Fernández
- Servicio de Cirugía Torácica, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Amparo Benito Berlinches
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
- Servicio de Anatomía Patológica, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Nicolás Moreno-Mata
- Servicio de Cirugía Torácica, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | | | - Alfredo Carrato
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
- Centro de Investigación Biomédica en Red, Área Cáncer, CIBERONC, ISCIII, Madrid, Spain
- Pancreatic Cancer Europe (PCE) Chairperson, Brussels, Belgium
| | | | - Laura Sánchez
- Department of Zoology, Genetics and Physical Anthropology, Veterinary Faculty, USC, Lugo, Spain
| | - Susana Torrente
- Valuation, Transfer and Entrepreneurship Area, USC, Santiago de Compostela, Spain
| | - Miguel Ángel Fernández-Moreno
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Rare Diseases, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain
| | - José L Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), and Departamento de Química Orgánica, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain.
| | - Bruno Sainz
- Department of Biochemistry, Autónoma University of Madrid, School of Medicine and Department of Cancer, Instituto de Investigaciones Biomédicas (IIBm) Sols-Morreale (CSIC-UAM), Madrid, Spain.
- Biomarkers and Personalized Approach to Cancer (BIOPAC) Group, Area 3 Cancer, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain.
- Centro de Investigación Biomédica en Red, Área Cáncer, CIBERONC, ISCIII, Madrid, Spain.
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Zhitkevich A, Bayurova E, Avdoshina D, Zakirova N, Frolova G, Chowdhury S, Ivanov A, Gordeychuk I, Palefsky JM, Isaguliants M. HIV-1 Reverse Transcriptase Expression in HPV16-Infected Epidermoid Carcinoma Cells Alters E6 Expression and Cellular Metabolism, and Induces a Hybrid Epithelial/Mesenchymal Cell Phenotype. Viruses 2024; 16:193. [PMID: 38399969 PMCID: PMC10892743 DOI: 10.3390/v16020193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 02/25/2024] Open
Abstract
The high incidence of epithelial malignancies in HIV-1 infected individuals is associated with co-infection with oncogenic viruses, such as high-risk human papillomaviruses (HR HPVs), mostly HPV16. The molecular mechanisms underlying the HIV-1-associated increase in epithelial malignancies are not fully understood. A collaboration between HIV-1 and HR HPVs in the malignant transformation of epithelial cells has long been anticipated. Here, we delineated the effects of HIV-1 reverse transcriptase on the in vitro and in vivo properties of HPV16-infected cervical cancer cells. A human cervical carcinoma cell line infected with HPV16 (Ca Ski) was made to express HIV-1 reverse transcriptase (RT) by lentiviral transduction. The levels of the mRNA of the E6 isoforms and of the factors characteristic to the epithelial/mesenchymal transition were assessed by real-time RT-PCR. The parameters of glycolysis and mitochondrial respiration were determined using Seahorse technology. RT expressing Ca Ski subclones were assessed for the capacity to form tumors in nude mice. RT expression increased the expression of the E6*I isoform, modulated the expression of E-CADHERIN and VIMENTIN, indicating the presence of a hybrid epithelial/mesenchymal phenotype, enhanced glycolysis, and inhibited mitochondrial respiration. In addition, the expression of RT induced phenotypic alterations impacting cell motility, clonogenic activity, and the capacity of Ca Ski cells to form tumors in nude mice. These findings suggest that HIV-RT, a multifunctional protein, affects HPV16-induced oncogenesis, which is achieved through modulation of the expression of the E6 oncoprotein. These results highlight a complex interplay between HIV antigens and HPV oncoproteins potentiating the malignant transformation of epithelial cells.
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Affiliation(s)
- Alla Zhitkevich
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, 119991 Moscow, Russia; (E.B.); (D.A.); (G.F.); (I.G.)
| | - Ekaterina Bayurova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, 119991 Moscow, Russia; (E.B.); (D.A.); (G.F.); (I.G.)
- Gamaleya National Research Center for Epidemiology and Microbiology, 123098 Moscow, Russia;
| | - Darya Avdoshina
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, 119991 Moscow, Russia; (E.B.); (D.A.); (G.F.); (I.G.)
| | - Natalia Zakirova
- Centre for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, 119991 Moscow, Russia;
| | - Galina Frolova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, 119991 Moscow, Russia; (E.B.); (D.A.); (G.F.); (I.G.)
| | - Sona Chowdhury
- Division of Infectious Diseases, Department of Medicine, University of California, San Francisco, CA 94143, USA; (S.C.); (J.M.P.)
| | - Alexander Ivanov
- Gamaleya National Research Center for Epidemiology and Microbiology, 123098 Moscow, Russia;
- Centre for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, 119991 Moscow, Russia;
| | - Ilya Gordeychuk
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, 119991 Moscow, Russia; (E.B.); (D.A.); (G.F.); (I.G.)
- Gamaleya National Research Center for Epidemiology and Microbiology, 123098 Moscow, Russia;
| | - Joel M. Palefsky
- Division of Infectious Diseases, Department of Medicine, University of California, San Francisco, CA 94143, USA; (S.C.); (J.M.P.)
| | - Maria Isaguliants
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
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104
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Wang R, Liu L, Min L, Adetunji AO, Kou X, Zhou K, Zhu Z. Mitochonic Acid 5 Increases Ram Sperm Quality by Improving Mitochondrial Function during Storage at 4 °C. Animals (Basel) 2024; 14:368. [PMID: 38338011 PMCID: PMC10854625 DOI: 10.3390/ani14030368] [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: 01/03/2024] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
Semen preservation involves lengthening sperm's fertile lifespan without any detrimental effects on its biochemical, functional, and ultrastructural properties. Liquid storage at 4 °C is a ram sperm preservation method. However, this method of storage causes irreversible damage due to cold shocks, osmotic stresses, oxidative stresses, and reductions in sperm metabolism. The present study aims to investigate whether the supplementation of mitochonic acid 5 (MA-5) in a sperm extender could improve chilled ram sperm quality and elucidate its mechanism of action. Ram sperm were diluted with a tris-citrate-glucose extender containing different concentrations of MA-5 (0, 0.1, 1, 10, and 100 nM) and stored at 4 °C for up to 48 h. Sperm motility, membrane integrity, acrosome integrity, mitochondrial membrane potential, reactive oxygen species (ROS) level, ATP content, and the expression of NADPH dehydrogenase subunits 1 (MT-ND1) and NADPH dehydrogenase subunits 6 (MT-ND6) were evaluated. It was observed that compared to the control, the 10 nM MA-5 treatment significantly (p < 0.05) increased total motility (82 ± 3.5% vs. 76 ± 5.9%), progressive motility (67.6 ± 8.2% vs. 51 ± 8.3%), and other parameters (straight-line velocity (VSL), average path velocity (VAP), and curvilinear velocity (VCL)). In addition, 10 nM MA-5 supplementation also improved ram sperm membrane integrity and acrosomal integrity as well increased mitochondrial membrane potential (51.1 ± 0.7% vs. 37.7 ± 1.3%), reduced ROS levels, and elevated adenosine triphosphate (ATP) contents. Furthermore, a Western blot analysis demonstrated that the addition of MA-5 significantly (p < 0.05) increased the expression of MT-ND1 and MT-ND6 proteins in ram sperm, with the 10 nM MA-5 treatment resulting in the highest expression level. These results suggest that MA-5 improves ram sperm quality by maintaining high sperm mitochondrial function during liquid storage at 4 °C.
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Affiliation(s)
- Ruyuan Wang
- College of Animal Science and Technology, Qingdao Agricultural University, No. 700 Changcheng Road, Qingdao 266109, China
| | - Luwei Liu
- College of Animal Science and Technology, Qingdao Agricultural University, No. 700 Changcheng Road, Qingdao 266109, China
| | - Lingjiang Min
- College of Animal Science and Technology, Qingdao Agricultural University, No. 700 Changcheng Road, Qingdao 266109, China
| | - Adedeji O. Adetunji
- Department of Agriculture, University of Arkansas at Pine Bluff, Pine Bluff, AR 71601, USA
| | - Xin Kou
- Hongde Livestock Farm, Yingli Town, Shuoguang 262717, China
| | - Kaifeng Zhou
- Shandong Provincial Animal Husbandry General Station, Jinan 250022, China
| | - Zhendong Zhu
- College of Animal Science and Technology, Qingdao Agricultural University, No. 700 Changcheng Road, Qingdao 266109, China
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105
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Macejova D, Kollar J, Bobal P, Otevrel J, Schuster D, Brtko J. Triphenyltin isoselenocyanate: a novel nuclear retinoid X receptor ligand with antiproliferative and cytotoxic properties in cell lines derived from human breast cancer. Mol Cell Biochem 2024:10.1007/s11010-023-04914-w. [PMID: 38227157 DOI: 10.1007/s11010-023-04914-w] [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: 09/22/2023] [Accepted: 12/03/2023] [Indexed: 01/17/2024]
Abstract
Several commercially available triorganotin compounds were previously found to function as agonist ligands for nuclear retinoid X receptor (RXR) molecules. Triphenyltin isoselenocyanate (TPT-NCSe), a novel selenium atom containing a derivative of triorganotin origin, was found to represent a new cognate bioactive ligand for RXRs. TPT-NCSe displayed a concentration- and time-dependent decrease in the cell viability in both human breast carcinoma MCF-7 (estrogen receptor positive) and MDA‑MB‑231 (triple negative) cell lines. Reactive oxygen species levels generated in response to TPT-NCSe were significantly higher in both carcinoma cell lines treated with TPT-NCSe when compared to mock-treated samples. Treatment with 500 nM TPT-NCSe caused a decrease in SOD1 and increased SOD2 mRNA in MCF-7 cells. The levels of SOD2 mRNA were more increased following the treatment with TPT-NCSe along with 1 μM all-trans retinoic acid (AtRA) in MCF-7 cells. An increased superoxide dismutase SOD1 and SOD2 mRNA levels were also detected in combination treatment of 500 nM TPT-NCSe and 1 μM AtRA in TPT-NCSe-treated MDA-MB-231 cells. The data have also shown that TPT-NCSe induces apoptosis via a caspase cascade triggered by the mitochondrial apoptotic pathway. TPT-NCSe modulates the expression levels of apoptosis‑related proteins, Annexin A5, Bcl‑2 and BAX family proteins, and finally, it enhances the expression levels of its cognate nuclear receptor subtypes RXRalpha and RXRbeta.
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Affiliation(s)
- Dana Macejova
- Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Dúbravská cesta 9, 845 05, Bratislava, Slovak Republic.
| | - Jakub Kollar
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Paracelsus Medical University, Strubergasse 21, 5020, Salzburg, Austria
| | - Pavel Bobal
- Department of Chemical Drugs, Faculty of Pharmacy, Masaryk University, Palackého třída 1946/1, 612 00, Brno, Czech Republic
| | - Jan Otevrel
- Department of Chemical Drugs, Faculty of Pharmacy, Masaryk University, Palackého třída 1946/1, 612 00, Brno, Czech Republic
| | - Daniela Schuster
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Paracelsus Medical University, Strubergasse 21, 5020, Salzburg, Austria
| | - Julius Brtko
- Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Dúbravská cesta 9, 845 05, Bratislava, Slovak Republic
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106
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Crino OL, Head ML, Jennions MD, Noble DWA. Mitochondrial function and sexual selection: can physiology resolve the 'lek paradox'? J Exp Biol 2024; 227:jeb245569. [PMID: 38206324 DOI: 10.1242/jeb.245569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Across many taxa, males use elaborate ornaments or complex displays to attract potential mates. Such sexually selected traits are thought to signal important aspects of male 'quality'. Female mating preferences based on sexual traits are thought to have evolved because choosy females gain direct benefits that enhance their lifetime reproductive success (e.g. greater access to food) and/or indirect benefits because high-quality males contribute genes that increase offspring fitness. However, it is difficult to explain the persistence of female preferences when males only provide genetic benefits, because female preferences should erode the heritable genetic variation in fitness that sexually selected traits signal. This 'paradox of the lek' has puzzled evolutionary biologists for decades, and inspired many hypotheses to explain how heritable variation in sexually selected traits is maintained. Here, we discuss how factors that affect mitochondrial function can maintain variation in sexually selected traits despite strong female preferences. We discuss how mitochondrial function can influence the expression of sexually selected traits, and we describe empirical studies that link the expression of sexually selected traits to mitochondrial function. We explain how mothers can affect mitochondrial function in their offspring by (a) influencing their developmental environment through maternal effects and (b) choosing a mate to increase the compatibility of mitochondrial and nuclear genes (i.e. the 'mitonuclear compatibility model of sexual selection'). Finally, we discuss how incorporating mitochondrial function into models of sexual selection might help to resolve the paradox of the lek, and we suggest avenues for future research.
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Affiliation(s)
- Ondi L Crino
- School of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT 2600, Australia
| | - Megan L Head
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT 2600, Australia
| | - Michael D Jennions
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT 2600, Australia
- Stellenbosch Institute for Advanced Study (STIAS), Wallenberg Centre, 10 Marais Street, Stellenbosch 7600, South Africa
| | - Daniel W A Noble
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT 2600, Australia
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107
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Bandy R, Shahi S, Quagraine N, Shahbazi Nia S, Howlader MSI, Srivenugopal K, Stephan C, Das H, Mikelis CM, German NA. Mechanistic Aspects of Biphenyl Urea-Based Analogues in Triple-Negative Breast Cancer Cell Lines. ACS Pharmacol Transl Sci 2024; 7:120-136. [PMID: 38230276 PMCID: PMC10789150 DOI: 10.1021/acsptsci.3c00193] [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: 08/17/2023] [Revised: 11/11/2023] [Accepted: 11/24/2023] [Indexed: 01/18/2024]
Abstract
Triple-negative breast cancer (TNBC) poses significant challenges due to its aggressive nature and limited treatment options. In this study, we investigated the impact of urea-based compounds on TNBC cells to uncover their mechanisms of action and therapeutic potential. Notably, polypharmacology urea analogues were found to work via p53-related pathways, and their cytotoxic effects were amplified by the modulation of oxidative phosphorylation pathways in the mitochondria of cancer cells. Specifically, compound 1 demonstrated an uncoupling effect on adenosine triphosphate (ATP) synthesis, leading to a time- and concentration-dependent shift toward glycolysis-based ATP production in MDA-MB-231 cells. At the same time, no significant changes in ATP synthesis were observed in noncancerous MCF10A cells. Moreover, the unique combination of mitochondrial- and p53-related effects leads to a higher cytotoxicity of urea analogues in cancer cells. Notably, the majority of tested clinical agents, but sorafenib, showed significantly higher toxicity in MCF10A cells. To test our hypothesis of sensitizing cancer cells to the treatment via modulation of mitochondrial health, we explored the combinatorial effects of urea-based analogues with established chemotherapeutic agents commonly used in TNBC treatment. Synergistic effects were evident in most tested combinations in TNBC cell lines, while noncancerous MCF10A cells exhibited higher resistance to these combination treatments. The combination of compound 1 with SN38 displayed nearly 60-fold selectivity toward TNBC cells over MCF10A cells. Encouragingly, combinations involving compound 1 restored the sensitivity of TNBC cells to cisplatin. In conclusion, our study provides valuable insights into the mechanisms of action of urea-based compounds in TNBC cells. The observed induction of mitochondrial membrane depolarization, inhibition of superoxide dismutase activity, disruption of ATP synthesis, and cell-line-specific responses contribute to their cytotoxic effects. Additionally, we demonstrated the synergistic potential of compound 1 to enhance the efficacy of existing TNBC treatments. However, the therapeutic potential and underlying molecular mechanisms of urea-based analogues in TNBC cell lines require further exploration.
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Affiliation(s)
- Rayna Bandy
- Department
of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas 79430, United States
| | - Sadisna Shahi
- Department
of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas 79430, United States
| | - Naana Quagraine
- Department
of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas 79430, United States
| | - Siavash Shahbazi Nia
- Department
of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas 79430, United States
| | - Md Sariful Islam Howlader
- Department
of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas 79430, United States
| | - Kalkunte Srivenugopal
- Department
of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas 79430, United States
| | - Clifford Stephan
- Institute
of Biosciences and Technology, Texas A&M
University, Houston, Texas 79106, United States
- Department
of Translational Medical Sciences, School of Medicine, Texas A&M University, Houston, Texas 77030, United States
| | - Hiranmoy Das
- Department
of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas 79430, United States
| | - Constantinos M. Mikelis
- Laboratory
of Molecular Pharmacology, Department of Pharmacy, University of Patras, Patras 26504, Greece
| | - Nadezhda A. German
- Department
of Pharmaceutical Sciences, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas 79430, United States
- Center
of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, Texas 79430, United States
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108
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Hovhannisyan Y, Li Z, Callon D, Suspène R, Batoumeni V, Canette A, Blanc J, Hocini H, Lefebvre C, El-Jahrani N, Kitsara M, L'honoré A, Kordeli E, Fornes P, Concordet JP, Tachdjian G, Rodriguez AM, Vartanian JP, Béhin A, Wahbi K, Joanne P, Agbulut O. Critical contribution of mitochondria in the development of cardiomyopathy linked to desmin mutation. Stem Cell Res Ther 2024; 15:10. [PMID: 38167524 PMCID: PMC10763022 DOI: 10.1186/s13287-023-03619-7] [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: 10/03/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Beyond the observed alterations in cellular structure and mitochondria, the mechanisms linking rare genetic mutations to the development of heart failure in patients affected by desmin mutations remain unclear due in part, to the lack of relevant human cardiomyocyte models. METHODS To shed light on the role of mitochondria in these mechanisms, we investigated cardiomyocytes derived from human induced pluripotent stem cells carrying the heterozygous DESE439K mutation that were either isolated from a patient or generated by gene editing. To increase physiological relevance, cardiomyocytes were either cultured on an anisotropic micropatterned surface to obtain elongated and aligned cardiomyocytes, or as a cardiac spheroid to create a micro-tissue. Moreover, when applicable, results from cardiomyocytes were confirmed with heart biopsies of suddenly died patient of the same family harboring DESE439K mutation, and post-mortem heart samples from five control healthy donors. RESULTS The heterozygous DESE439K mutation leads to dramatic changes in the overall cytoarchitecture of cardiomyocytes, including cell size and morphology. Most importantly, mutant cardiomyocytes display altered mitochondrial architecture, mitochondrial respiratory capacity and metabolic activity reminiscent of defects observed in patient's heart tissue. Finally, to challenge the pathological mechanism, we transferred normal mitochondria inside the mutant cardiomyocytes and demonstrated that this treatment was able to restore mitochondrial and contractile functions of cardiomyocytes. CONCLUSIONS This work highlights the deleterious effects of DESE439K mutation, demonstrates the crucial role of mitochondrial abnormalities in the pathophysiology of desmin-related cardiomyopathy, and opens up new potential therapeutic perspectives for this disease.
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Affiliation(s)
- Yeranuhi Hovhannisyan
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France
| | - Zhenlin Li
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France
| | - Domitille Callon
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France
- Department of Pathology, Academic Hospital of Reims, Reims, France
| | - Rodolphe Suspène
- Virus and Cellular Stress Unit, Department of Virology, Institut Pasteur, Université Paris Cité, Paris, France
| | - Vivien Batoumeni
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France
- Ksilink, Strasbourg, France
| | - Alexis Canette
- Service de Microscopie Électronique (IBPS-SME), Institut de Biologie Paris-Seine (IBPS), CNRS, Sorbonne Université, Paris, France
| | - Jocelyne Blanc
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France
| | - Hakim Hocini
- INSERM U955, Equipe 16, Université Paris-Est Créteil, Créteil, France
| | - Cécile Lefebvre
- INSERM U955, Equipe 16, Université Paris-Est Créteil, Créteil, France
| | - Nora El-Jahrani
- INSERM U955, Equipe 16, Université Paris-Est Créteil, Créteil, France
| | - Maria Kitsara
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France
| | - Aurore L'honoré
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France
| | - Ekaterini Kordeli
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France
| | - Paul Fornes
- Department of Pathology, Academic Hospital of Reims, Reims, France
| | - Jean-Paul Concordet
- INSERM U1154, CNRS UMR7196, Museum National d'Histoire Naturelle, Paris, France
| | - Gérard Tachdjian
- Laboratoire de Cytogénétique, Service d'Histologie-Embryologie-Cytogénétique, AP-HP, Hôpital Antoine Béclère, Université Paris Saclay, Clamart, France
| | - Anne-Marie Rodriguez
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France
| | - Jean-Pierre Vartanian
- Virus and Cellular Stress Unit, Department of Virology, Institut Pasteur, Université Paris Cité, Paris, France
| | - Anthony Béhin
- Reference Center for Muscle Diseases Paris-Est, Myology Institute, AP-HP, Pitié-Salpêtrière Hospital, Sorbonne Université, Paris, France
| | - Karim Wahbi
- Cardiology Department, AP-HP, Cochin Hospital, Université Paris Cité, Paris, France
| | - Pierre Joanne
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France.
| | - Onnik Agbulut
- UMR CNRS 8256, INSERM U1164, Biological Adaptation and Ageing, Institut de Biologie Paris-Seine (IBPS), Sorbonne Université, 7, Quai St Bernard (case 256), 75005, Paris, France.
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109
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Makhlouf M, Souza DG, Kurian S, Bellaver B, Ellis H, Kuboki A, Al-Naama A, Hasnah R, Venturin GT, Costa da Costa J, Venugopal N, Manoel D, Mennella J, Reisert J, Tordoff MG, Zimmer ER, Saraiva LR. Short-term consumption of highly processed diets varying in macronutrient content impair the sense of smell and brain metabolism in mice. Mol Metab 2024; 79:101837. [PMID: 37977411 PMCID: PMC10724696 DOI: 10.1016/j.molmet.2023.101837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/29/2023] [Accepted: 11/10/2023] [Indexed: 11/19/2023] Open
Abstract
OBJECTIVE Food processing greatly contributed to increased food safety, diversity, and accessibility. However, the prevalence of highly palatable and highly processed food in our modern diet has exacerbated obesity rates and contributed to a global health crisis. While accumulating evidence suggests that chronic consumption of such foods is detrimental to sensory and neural physiology, it is unclear whether its short-term intake has adverse effects. Here, we assessed how short-term consumption (<2 months) of three diets varying in composition and macronutrient content influence olfaction and brain metabolism in mice. METHODS The diets tested included a grain-based standard chow diet (CHOW; 54% carbohydrate, 32% protein, 14% fat; #8604 Teklad Rodent diet , Envigo Inc.), a highly processed control diet (hpCTR; 70% carbohydrate, 20% protein, 10% fat; #D12450B, Research Diets Inc.), and a highly processed high-fat diet (hpHFD; 20% carbohydrate, 20% protein, 60% fat; #D12492, Research Diets Inc.). We performed behavioral and metabolic phenotyping, electro-olfactogram (EOG) recordings, brain glucose metabolism imaging, and mitochondrial respirometry in different brain regions. We also performed RNA-sequencing (RNA-seq) in the nose and across several brain regions, and conducted differential expression analysis, gene ontology, and network analysis. RESULTS We show that short-term consumption of the two highly processed diets, but not the grain-based diet, regardless of macronutrient content, adversely affects odor-guided behaviors, physiological responses to odorants, transcriptional profiles in the olfactory mucosa and brain regions, and brain glucose metabolism and mitochondrial respiration. CONCLUSIONS Even short periods of highly processed food consumption are sufficient to cause early olfactory and brain abnormalities, which has the potential to alter food choices and influence the risk of developing metabolic disease.
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Affiliation(s)
| | - Débora G Souza
- Graduate Program in Biological Sciences: Biochemistry, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil; Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Bruna Bellaver
- Graduate Program in Biological Sciences: Biochemistry, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Hillary Ellis
- Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA
| | - Akihito Kuboki
- Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA
| | | | - Reem Hasnah
- Sidra Medicine, PO Box 26999, Doha, Qatar; College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Gianina Teribele Venturin
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Jaderson Costa da Costa
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | - Julie Mennella
- Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA
| | - Johannes Reisert
- Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA
| | - Michael G Tordoff
- Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Eduardo R Zimmer
- Graduate Program in Biological Sciences: Biochemistry, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil; Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil; Department of Pharmacology, UFRGS, Porto Alegre, Brazil; Graduate Program in Biological Sciences: Pharmacology and Therapeutics, UFRGS, Porto Alegre, Brazil; McGill Centre for Studies in Aging, Montreal, Canada.
| | - Luis R Saraiva
- Sidra Medicine, PO Box 26999, Doha, Qatar; Monell Chemical Senses Center, 3500 Market Street, Philadelphia, PA 19104, USA; College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar.
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110
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Zhang Y, Xie J, Ouyang Y, Li S, Sun Y, Tan W, Ren L, Zhou X. Adverse outcome pathways of PBDEs inducing male reproductive toxicity. ENVIRONMENTAL RESEARCH 2024; 240:117598. [PMID: 37939807 DOI: 10.1016/j.envres.2023.117598] [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: 09/20/2023] [Revised: 10/20/2023] [Accepted: 11/03/2023] [Indexed: 11/10/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) are widely used brominated flame retardants, they are easily released into environment and causing adverse effects to the ecosystem and human health. This review aims to summarize the research status of PBDEs-induced male reproductive toxicity and its mechanisms at various levels such as molecular/cellular, tissue/organ and individual/population. The Adverse Outcome Pathways (AOPs) diagram showed that PBDEs-induced reactive oxygen species (ROS) production, disruptions of estrogen receptor-α (ERα) and antagonism of androgen receptor (AR) were defined as critical molecular initiating events (MIEs). They caused key events (KEs) at the molecular and cellular levels, including oxidative stress, increased DNA damage, damaging mitochondria, increased glycolipid levels and apoptosis, depletion of ectoplasmic specialization and decreased Leydig cells numbers. These in turn lead to followed KEs at the tissue or organ levels, such as the impaired spermatogenesis, impaired blood-testis barrier and reduced testosterone synthesis and function. As a result, reproductive system-related adverse outcomes (AOs) were reported, such as the decreased sperm quantity or quality, shorten male anogenital distance and cryptorchidism in individual and reduced reproduction of the population. This review assembled information on the mechanisms of male reproductive toxicity induced by PBDEs, and constructed a causal mechanism relationship diagram from different levels using the an AOP framework to provide theoretical basis for ecological risk assessment and environmental management of PBDEs. The AOP framework makes it possible to develop risk management strategies based on toxicity mechanisms and support for development of Integrated Approach to Testing and Assessment (IATA) which are available for regulatory purposes.
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Affiliation(s)
- Yue Zhang
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Junhong Xie
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Yixin Ouyang
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Shuang Li
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Yulin Sun
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Weilun Tan
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China
| | - Lihua Ren
- School of Nursing, Peking University, Beijing, 100191, China
| | - Xianqing Zhou
- Department of Toxicology and Hygienic Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China.
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111
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Katunina EA, Semenova AM, Katunin DA. [The complex effect of polyphenols on the gut microbiota and triggers of neurodegeneration in Parkinson's disease]. Zh Nevrol Psikhiatr Im S S Korsakova 2024; 124:38-44. [PMID: 38261282 DOI: 10.17116/jnevro202412401138] [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: 01/24/2024]
Abstract
Intestinal dysfunction and microbiome changes are actively discussed in the modern literature as the most important link in the development of neurodegenerative changes in Parkinson's disease. The article discusses the pathogenetic chain «microbiome- intestine-brain», as well as factors that affect the development of intestinal dysbiosis. A promising direction for influencing microflora and inflammatory changes in the intestine is the use of polyphenols, primarily curcumin. The review of experimental, laboratory, clinical research proving the pleiotropic effect of curcumin, including its antioxidant, anti-inflammatory, neuroprotective effects, realized both through peripheral and central mechanisms is presented.
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Affiliation(s)
- E A Katunina
- Federal Center of Brain and Neurotechnologies, Moscow, Russia
- Pirogov Russian National Research Medical University Ministry of Health of Russia, Moscow, Russia
| | - A M Semenova
- Federal Center of Brain and Neurotechnologies, Moscow, Russia
| | - D A Katunin
- Federal Center of Brain and Neurotechnologies, Moscow, Russia
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112
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Huang X, Zheng L, Zhou Y, Hu S, Ning W, Li S, Lin Z, Huang S. Controllable Adaptive Molybdate-Oligosaccharide Nanoparticles Regulate M2 Macrophage Mitochondrial Function and Promote Angiogenesis via PI3K/HIF-1α/VEGF Pathway to Accelerate Diabetic Wound Healing. Adv Healthc Mater 2024; 13:e2302256. [PMID: 37922497 DOI: 10.1002/adhm.202302256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 10/22/2023] [Indexed: 11/05/2023]
Abstract
The complex wound environment of diabetic wounds leads to poor treatment efficacy, and the inflammatory disorders and vascular injury are the primary causes of death in such patients. Herein, a sprayable, controllable adaptive, pH-responsive nanosystem of molybdate and oligosaccharide (CMO) is specially developed as an immunomodulatory and angiogenesis-promotion material for diabetic wound healing. CMO exhibited pH-responsive release of Mo2+ and oligosaccharide (COS), specifically in response to the alkalescent environment observed in diabetic wounds. CMO provide an anti-inflammatory environment by promoting M2 polarization through significantly stimulating macrophage mitochondrial function. Specifically, CMO with a certain concentration reduce reactive oxygen species (ROS) and tumor necrosis factor α (TNF-α) expression, and upregulated mitochondrial membrane potential (MMP), superoxide dismutase (SOD), and interleukin 10 (IL-10) expression in macrophages. Moreover, CMO facilitate angiogenesis via upregulating the PI3K/HIF-1α/VEGF pathway-a critical process for the formation of new blood vessels that supply nutrients and oxygen to the healing tissue. Remarkably, CMO promote cell viability and migration of endothelial cells, and enhance the expression of angiogenic genes. In vitro and in vivo studies suggest this simple but powerful nanosystem targeting mitochondrial function has the potential to become an effective treatment for diabetic wound healing.
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Affiliation(s)
- Xiuhong Huang
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, 510280, China
| | - Liqin Zheng
- Department of The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Yueshan Zhou
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, 510280, China
| | - Shaonan Hu
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, 510280, China
| | - Wancheng Ning
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, 510280, China
| | - Simin Li
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, 510280, China
| | - Ziling Lin
- Department of Orthopedic Trauma, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Shaohong Huang
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, 510280, China
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Piao L, Fang YH, Fisher M, Hamanaka RB, Ousta A, Wu R, Mutlu GM, Garcia AJ, Archer SL, Sharp WW. Dynamin-related protein 1 is a critical regulator of mitochondrial calcium homeostasis during myocardial ischemia/reperfusion injury. FASEB J 2024; 38:e23379. [PMID: 38133921 DOI: 10.1096/fj.202301040rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 11/17/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
Dynamin-related protein 1 (Drp1) is a cytosolic GTPase protein that when activated translocates to the mitochondria, meditating mitochondrial fission and increasing reactive oxygen species (ROS) in cardiomyocytes. Drp1 has shown promise as a therapeutic target for reducing cardiac ischemia/reperfusion (IR) injury; however, the lack of specificity of some small molecule Drp1 inhibitors and the reliance on the use of Drp1 haploinsufficient hearts from older mice have left the role of Drp1 in IR in question. Here, we address these concerns using two approaches, using: (a) short-term (3 weeks), conditional, cardiomyocyte-specific, Drp1 knockout (KO) and (b) a novel, highly specific Drp1 GTPase inhibitor, Drpitor1a. Short-term Drp1 KO mice exhibited preserved exercise capacity and cardiac contractility, and their isolated cardiac mitochondria demonstrated increased mitochondrial complex 1 activity, respiratory coupling, and calcium retention capacity compared to controls. When exposed to IR injury in a Langendorff perfusion system, Drp1 KO hearts had preserved contractility, decreased reactive oxygen species (ROS), enhanced mitochondrial calcium capacity, and increased resistance to mitochondrial permeability transition pore (MPTP) opening. Pharmacological inhibition of Drp1 with Drpitor1a following ischemia, but before reperfusion, was as protective as Drp1 KO for cardiac function and mitochondrial calcium homeostasis. In contrast to the benefits of short-term Drp1 inhibition, prolonged Drp1 ablation (6 weeks) resulted in cardiomyopathy. Drp1 KO hearts were also associated with decreased ryanodine receptor 2 (RyR2) protein expression and pharmacological inhibition of the RyR2 receptor decreased ROS in post-IR hearts suggesting that changes in RyR2 may have a role in Drp1 KO mediated cardioprotection. We conclude that Drp1-mediated increases in myocardial ROS production and impairment of mitochondrial calcium handling are key mechanisms of IR injury. Short-term inhibition of Drp1 is a promising strategy to limit early myocardial IR injury which is relevant for the therapy of acute myocardial infarction, cardiac arrest, and heart transplantation.
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Affiliation(s)
- Lin Piao
- Section of Emergency Medicine, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Yong-Hu Fang
- Section of Emergency Medicine, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Michael Fisher
- Section of Emergency Medicine, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Robert B Hamanaka
- Section of Pulmonary and Critical Care, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Alaa Ousta
- Department of Emergency Medicine, Duke University, Durham, North Carolina, USA
| | - Rongxu Wu
- Section of Cardiology, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Gökhan M Mutlu
- Section of Pulmonary and Critical Care, Department of Medicine, University of Chicago, Chicago, Illinois, USA
- Institute for Integrative Physiology, University of Chicago, Chicago, Illinois, USA
| | - Alfredo J Garcia
- Section of Emergency Medicine, Department of Medicine, University of Chicago, Chicago, Illinois, USA
- Institute for Integrative Physiology, University of Chicago, Chicago, Illinois, USA
- The University of Chicago Neuroscience Institute, University of Chicago, Chicago, Illinois, USA
| | - Stephen L Archer
- Department of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Willard W Sharp
- Section of Emergency Medicine, Department of Medicine, University of Chicago, Chicago, Illinois, USA
- Institute for Integrative Physiology, University of Chicago, Chicago, Illinois, USA
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Roy R, York E, Pacchini E, Rawling T. Effects of cationic head group structure on cytotoxicity and mitochondrial actions of amphiphilic ionic liquids. Food Chem Toxicol 2024; 183:114202. [PMID: 38007213 DOI: 10.1016/j.fct.2023.114202] [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: 08/08/2023] [Revised: 10/24/2023] [Accepted: 11/17/2023] [Indexed: 11/27/2023]
Abstract
Ionic liquids (ILs) are a class of low melting point salts with physicochemical properties that make them suitable for a range of industrial applications. Accumulating evidence suggests that certain ILs are cytotoxic and potential environmental pollutants, thus understanding the structural features that promote IL cytotoxicity is important. Amphiphilic ionic liquids (AmILs), a class of ILs with lipophilic N-alkyl chains, containing aromatic head groups are generally more cytotoxic than their aliphatic counterparts, however the impact of other head group properties are less clear. This study therefore sought to provide new structure activity relationship (SAR) insights regarding the role of the cationic head group on AmIL cytotoxicity. A series of AmILs bearing a range of structurally diverse aromatic cations varying in size, charge, and lipophilicity was synthesised and screened against human MDA-MB-231 breast cancer cells. It was found that larger and more lipophilic head groups increased cytotoxicity, although the magnitude of the changes were modest. The mitochondrial effects of representative ILs were assessed. The AmILs induced mitochondrial dysfunction in MDA-MB-231 cells at cytotoxic concentrations, suggesting that they target mitochondria. The new SAR information from this study may assist in the design of AmILs with controlled cytotoxicity.
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Affiliation(s)
- Ritik Roy
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Edward York
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Ethan Pacchini
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Tristan Rawling
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia.
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Diaz-Vegas A, Madsen S, Cooke KC, Carroll L, Khor JXY, Turner N, Lim XY, Astore MA, Morris JC, Don AS, Garfield A, Zarini S, Zemski Berry KA, Ryan AP, Bergman BC, Brozinick JT, James DE, Burchfield JG. Mitochondrial electron transport chain, ceramide, and coenzyme Q are linked in a pathway that drives insulin resistance in skeletal muscle. eLife 2023; 12:RP87340. [PMID: 38149844 PMCID: PMC10752590 DOI: 10.7554/elife.87340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023] Open
Abstract
Insulin resistance (IR) is a complex metabolic disorder that underlies several human diseases, including type 2 diabetes and cardiovascular disease. Despite extensive research, the precise mechanisms underlying IR development remain poorly understood. Previously we showed that deficiency of coenzyme Q (CoQ) is necessary and sufficient for IR in adipocytes and skeletal muscle (Fazakerley et al., 2018). Here, we provide new insights into the mechanistic connections between cellular alterations associated with IR, including increased ceramides, CoQ deficiency, mitochondrial dysfunction, and oxidative stress. We demonstrate that elevated levels of ceramide in the mitochondria of skeletal muscle cells result in CoQ depletion and loss of mitochondrial respiratory chain components, leading to mitochondrial dysfunction and IR. Further, decreasing mitochondrial ceramide levels in vitro and in animal models (mice, C57BL/6J) (under chow and high-fat diet) increased CoQ levels and was protective against IR. CoQ supplementation also rescued ceramide-associated IR. Examination of the mitochondrial proteome from human muscle biopsies revealed a strong correlation between the respirasome system and mitochondrial ceramide as key determinants of insulin sensitivity. Our findings highlight the mitochondrial ceramide-CoQ-respiratory chain nexus as a potential foundation of an IR pathway that may also play a critical role in other conditions associated with ceramide accumulation and mitochondrial dysfunction, such as heart failure, cancer, and aging. These insights may have important clinical implications for the development of novel therapeutic strategies for the treatment of IR and related metabolic disorders.
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Affiliation(s)
- Alexis Diaz-Vegas
- Charles Perkins Centre, School of life and Environmental Sciences, University of SydneySydneyAustralia
| | - Søren Madsen
- Charles Perkins Centre, School of life and Environmental Sciences, University of SydneySydneyAustralia
| | - Kristen C Cooke
- Charles Perkins Centre, School of life and Environmental Sciences, University of SydneySydneyAustralia
| | - Luke Carroll
- Charles Perkins Centre, School of life and Environmental Sciences, University of SydneySydneyAustralia
| | - Jasmine XY Khor
- Charles Perkins Centre, School of life and Environmental Sciences, University of SydneySydneyAustralia
- Charles Perkins Centre and School of Medical Sciences, Faculty of Medicine and Health, University of SydneySydneyAustralia
| | - Nigel Turner
- Cellular Bioenergetics Laboratory, Victor Chang Cardiac Research InstituteSydneyAustralia
| | - Xin Y Lim
- Charles Perkins Centre and School of Medical Sciences, Faculty of Medicine and Health, University of SydneySydneyAustralia
| | - Miro A Astore
- Center for Computational Biology and Center for Computational Mathematics, Flatiron InstituteNew YorkUnited States
| | | | - Anthony S Don
- Charles Perkins Centre and School of Medical Sciences, Faculty of Medicine and Health, University of SydneySydneyAustralia
| | - Amanda Garfield
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical CampusAuroraUnited States
| | - Simona Zarini
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical CampusAuroraUnited States
| | - Karin A Zemski Berry
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical CampusAuroraUnited States
| | - Andrew P Ryan
- Lilly Research Laboratories, Division of Eli Lilly and CompanyIndianapolisUnited States
| | - Bryan C Bergman
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical CampusAuroraUnited States
| | - Joseph T Brozinick
- Lilly Research Laboratories, Division of Eli Lilly and CompanyIndianapolisUnited States
| | - David E James
- Charles Perkins Centre, School of life and Environmental Sciences, University of SydneySydneyAustralia
- Charles Perkins Centre and School of Medical Sciences, Faculty of Medicine and Health, University of SydneySydneyAustralia
| | - James G Burchfield
- Charles Perkins Centre, School of life and Environmental Sciences, University of SydneySydneyAustralia
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116
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Yang S, Zhang T, Ge Y, Cheng Y, Yin L, Pu Y, Chen Z, Liang G. Ferritinophagy Mediated by Oxidative Stress-Driven Mitochondrial Damage Is Involved in the Polystyrene Nanoparticles-Induced Ferroptosis of Lung Injury. ACS NANO 2023; 17:24988-25004. [PMID: 38086097 DOI: 10.1021/acsnano.3c07255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Nanoplastics are a common type of contaminant in the air. However, no investigations have focused on the toxic mechanism of lung injury induced by nanoplastic exposure. In the present study, polystyrene nanoplastics (PS-NPs) caused ferroptosis in lung epithelial cells, which could be alleviated by ferrostatin-1, deferoxamine, and N-acetylcysteine. Further investigation found that PS-NPs disturbed mitochondrial structure and function and triggered autophagy. Mechanistically, oxidative stress-derived mitochondrial damage contributed to ferroptosis, and autophagy-dependent ferritinophagy was a pivotal intermediate link, resulting in ferritin degradation and iron ion release. Furthermore, inhibition of ferroptosis using ferrostatin-1 alleviated pulmonary and systemic toxicity to reverse the mouse lung injury induced by PS-NPs inhalation. Most importantly, the lung-on-a-chip was further used to clarify the role of ferroptosis in the PS-NPs-induced lung injury by visualizing the ferroptosis, oxidative stress, and alveolar-capillary barrier dysfunction at the organ level. In summary, our study indicated that ferroptosis was an important mechanism for nanoplastics-induced lung injury through different lung cells, mouse inhalation models, and three-dimensional-based lung-on-a-chip, providing an insightful reference for pulmonary toxicity assessment of nanoplastics.
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Affiliation(s)
- Sheng Yang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P. R. China
| | - Tianyi Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P. R. China
| | - Yiling Ge
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P. R. China
| | - Yanping Cheng
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P. R. China
| | - Lihong Yin
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P. R. China
| | - Yuepu Pu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P. R. China
| | - Zaozao Chen
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, P. R. China
| | - Geyu Liang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu 210009, P. R. China
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Miles TK, Odle AK, Byrum SD, Lagasse A, Haney A, Ortega VG, Bolen CR, Banik J, Reddick MM, Herdman A, MacNicol MC, MacNicol AM, Childs GV. Anterior Pituitary Transcriptomics Following a High-Fat Diet: Impact of Oxidative Stress on Cell Metabolism. Endocrinology 2023; 165:bqad191. [PMID: 38103263 PMCID: PMC10771268 DOI: 10.1210/endocr/bqad191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/07/2023] [Accepted: 12/14/2023] [Indexed: 12/18/2023]
Abstract
Anterior pituitary cell function requires a high level of protein synthesis and secretion which depend heavily on mitochondrial adenosine triphosphate production and functional endoplasmic reticula. Obesity adds stress to tissues, requiring them to adapt to inflammation and oxidative stress, and adding to their allostatic load. We hypothesized that pituitary function is vulnerable to the stress of obesity. Here, we utilized a 10- to 15-week high-fat diet (HFD, 60%) in a thermoneutral environment to promote obesity, testing both male and female FVB.129P mice. We quantified serum hormones and cytokines, characterized the metabolic phenotype, and defined changes in the pituitary transcriptome using single-cell RNA-sequencing analysis. Weight gain was significant by 3 weeks in HFD mice, and by 10 weeks all HFD groups had gained 20 g. HFD females (15 weeks) had increased energy expenditure and decreased activity. All HFD groups showed increases in serum leptin and decreases in adiponectin. HFD caused increased inflammatory markers: interleukin-6, resistin, monocyte chemoattractant protein-1, and tumor necrosis factorα. HFD males and females also had increased insulin and increased TSH, and HFD females had decreased serum prolactin and growth hormone pulse amplitude. Pituitary single-cell transcriptomics revealed modest or no changes in pituitary cell gene expression from HFD males after 10 or 15 weeks or from HFD females after 10 weeks. However, HFD females (15 weeks) showed significant numbers of differentially expressed genes in lactotropes and pituitary stem cells. Collectively, these studies reveal that pituitary cells from males appear to be more resilient to the oxidative stress of obesity than females and identify the most vulnerable pituitary cell populations in females.
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Affiliation(s)
- Tiffany K Miles
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Angela K Odle
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Stephanie D Byrum
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Department of Biomedical informatics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Arkansas Children's Research Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Alex Lagasse
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Anessa Haney
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Victoria G Ortega
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Cole R Bolen
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Jewel Banik
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Milla M Reddick
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Ashley Herdman
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Melanie C MacNicol
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Angus M MacNicol
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Gwen V Childs
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
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118
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Elmorsy E, Al-Ghafari A, Al Doghaither H, Hashish S, Salama M, Mudyanselage AW, James L, Carter WG. Differential Effects of Paraquat, Rotenone, and MPTP on Cellular Bioenergetics of Undifferentiated and Differentiated Human Neuroblastoma Cells. Brain Sci 2023; 13:1717. [PMID: 38137165 PMCID: PMC10741680 DOI: 10.3390/brainsci13121717] [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: 10/17/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Paraquat (PQ), rotenone (RO), and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) are neurotoxicants that can damage human health. Exposure to these neurotoxicants has been linked to neurodegeneration, particularly Parkinson's disease. However, their mechanisms of action have not been fully elucidated, nor has the relative vulnerability of neuronal subtypes to their exposures. To address this, the current study investigated the cytotoxic effects of PQ, RO, and MPTP and their relative effects on cellular bioenergetics and oxidative stress on undifferentiated human neuroblastoma (SH-SY5Y) cells and those differentiated to dopaminergic (DA) or cholinergic (CH) phenotypes. The tested neurotoxicants were all cytotoxic to the three cell phenotypes that correlated with both concentration and exposure duration. At half-maximal effective concentrations (EC50s), there were significant reductions in cellular ATP levels and reduced activity of the mitochondrial complexes I and III, with a parallel increase in lactate production. PQ at 10 µM significantly decreased ATP production and mitochondrial complex III activity only in DA cells. RO was the most potent inhibitor of mitochondrial complex 1 and did not inhibit mitochondrial complex III even at concentrations that induced a 50% loss of cell viability. MPTP was the most potent toxicant in undifferentiated cells. All neurotoxicants significantly increased reactive oxygen species, lipid peroxidation, and nuclear expression of Nrf2, with a corresponding inhibition of the antioxidant enzymes catalase and superoxide dismutase. At a 10 µM exposure to PQ or RO, oxidative stress biomarkers were significant in DA cells. Collectively, this study underscores the importance of mitochondrial dysfunction and oxidative stress in PQ, RO, and MPTP-induced cytotoxicity and that neuronal phenotypes display differential vulnerability to these neurotoxicants.
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Affiliation(s)
- Ekramy Elmorsy
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
- Pathology Department, Faculty of Medicine, Northern Border University, Arar 91431, Saudi Arabia
| | - Ayat Al-Ghafari
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.A.-G.); (H.A.D.)
- Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Huda Al Doghaither
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.A.-G.); (H.A.D.)
| | - Sara Hashish
- Institute of Global Health and Human Ecology, The American University in Cairo (AUC), Cairo 11385, Egypt; (S.H.); (M.S.)
| | - Mohamed Salama
- Institute of Global Health and Human Ecology, The American University in Cairo (AUC), Cairo 11385, Egypt; (S.H.); (M.S.)
| | - Anusha W. Mudyanselage
- Clinical Toxicology Research Group, School of Medicine, University of Nottingham, Royal Derby Hospital Centre, Derby DE22 3DT, UK; (A.W.M.); (L.J.)
- Faculty of Agricultural Sciences, Sabaragamuwa University of Sri Lanka, Belihuloya 70140, Sri Lanka
| | - Lipta James
- Clinical Toxicology Research Group, School of Medicine, University of Nottingham, Royal Derby Hospital Centre, Derby DE22 3DT, UK; (A.W.M.); (L.J.)
| | - Wayne G. Carter
- Clinical Toxicology Research Group, School of Medicine, University of Nottingham, Royal Derby Hospital Centre, Derby DE22 3DT, UK; (A.W.M.); (L.J.)
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119
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Rosell-Hidalgo A, Eakins J, Walker P, Moore AL, Ghafourian T. Risk Assessment of Psychotropic Drugs on Mitochondrial Function Using In Vitro Assays. Biomedicines 2023; 11:3272. [PMID: 38137493 PMCID: PMC10741027 DOI: 10.3390/biomedicines11123272] [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: 11/12/2023] [Revised: 11/30/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Mitochondria are potential targets responsible for some drug- and xenobiotic-induced organ toxicities. However, molecular mechanisms of drug-induced mitochondrial toxicities are mostly unknown. Here, multiple in vitro assays were used to investigate the effects of 22 psychotropic drugs on mitochondrial function. The acute extracellular flux assay identified inhibitors of the electron transport chain (ETC), i.e., aripiprazole, phenytoin, and fluoxetine, an uncoupler (reserpine), substrate inhibitors (quetiapine, carbamazepine, buspirone, and tianeptine), and cytotoxic compounds (chlorpromazine and valproic acid) in HepG2 cells. Using permeabilized HepG2 cells revealed minimum effective concentrations of 66.3, 6730, 44.5, and 72.1 µM for the inhibition of complex-I-linked respiration for quetiapine, valproic acid, buspirone, and fluoxetine, respectively. Assessing complex-II-linked respiration in isolated rat liver mitochondria revealed haloperidol is an ETC inhibitor, chlorpromazine is an uncoupler in basal respiration and an ETC inhibitor under uncoupled respiration (IC50 = 135 µM), while olanzapine causes a mild dissipation of the membrane potential at 50 µM. This research elucidates some mechanisms of drug toxicity and provides some insight into their safety profile for clinical drug decisions.
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Affiliation(s)
- Alicia Rosell-Hidalgo
- Cyprotex Discovery Ltd., No. 24 Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, UK; (A.R.-H.); (J.E.)
| | - Julie Eakins
- Cyprotex Discovery Ltd., No. 24 Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, UK; (A.R.-H.); (J.E.)
| | - Paul Walker
- Cyprotex Discovery Ltd., No. 24 Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, UK; (A.R.-H.); (J.E.)
| | - Anthony L. Moore
- Department of Biochemistry and Biomedicine, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK;
| | - Taravat Ghafourian
- Department of Pharmaceutical Sciences, Barry & Judy Silverman College of Pharmacy, Nova Southeastern University, 3200 South University Drive, Ft. Lauderdale, FL 33328-2018, USA
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120
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Noone J, Rochfort KD, O'Sullivan F, O'Gorman DJ. SIRT4 is a regulator of human skeletal muscle fatty acid metabolism influencing inner and outer mitochondrial membrane-mediated fusion. Cell Signal 2023; 112:110931. [PMID: 37858614 DOI: 10.1016/j.cellsig.2023.110931] [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: 04/18/2023] [Revised: 09/22/2023] [Accepted: 10/16/2023] [Indexed: 10/21/2023]
Abstract
OBJECTIVE The mitochondrial phenotype, governed by the balance of fusion-fission, is a key determinant of energy metabolism. The inner and outer mitochondrial membrane (IMM) fusion proteins optic atrophy 1 (OPA1) and Mitofusin 1 and 2 (Mfn1/2) play an important role in this process. Recent evidence also shows that Sirtuin 4 (SIRT4), located within the mitochondria, is involved in the regulation of fatty acid oxidation. The purpose of this study was to determine if SIRT4 expression regulates inner and outer mitochondrial-mediated fusion and substrate utilization within differentiated human skeletal muscle cells (HSkMC). MATERIAL AND METHODS SIRT4 expression was knocked down using small interfering RNA (siRNA) transfection in differentiated HSkMC. Following knockdown, mitochondrial respiration was determined by high-resolution respirometry (HRR) using the Oroboros Oxygraph O2k. Live cell confocal microscopy, quantified using the Mitochondrial Network Analysis (MiNA) toolset, was used to examine mitochondrial morphological change. This was further examined through the measurement of key metabolic and mitochondrial morphological regulators (mRNA and protein) induced by knockdown. RESULTS SIRT4 knockdown resulted in a significant decrease in LEAK respiration, potentially explained by a decrease in ANT1 protein expression. Knockdown further increased oxidative phosphorylation and protein expression of key regulators of fatty acid metabolism. Quantitative analysis of live confocal imaging of fluorescently labelled mitochondria following SIRT4 knockdown supported the role SIRT4 plays in the regulation of mitochondrial morphology, as emphasized by an increase in mitochondrial network branches and junctions. Measurement of key regulators of mitochondrial dynamics illustrated a significant increase in mitochondrial fusion proteins Mfn1, OPA1 respectively, indicative of an increase in mitochondrial size. CONCLUSIONS This study provides evidence of a direct relationship between the mitochondrial phenotype and substrate oxidation in HSkMC. We identify SIRT4 as a key protagonist of energy metabolism via its regulation of IMM and OMM fusion proteins, OPA1 and Mfn1. SIRT4 knockdown increases mitochondrial capacity to oxidize fatty acids, decreasing LEAK respiration and further increasing mitochondrial elongation via its regulation of mitochondrial fusion.
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Affiliation(s)
- John Noone
- 3U Diabetes Partnership, School of Health and Human Performance, Dublin City University, Dublin, Ireland; National Institute for Cellular and Biotechnology, Dublin City University, Dublin, Ireland; Translational Research Institute, AdventHealth, Orlando, FL, USA
| | - Keith D Rochfort
- National Institute for Cellular and Biotechnology, Dublin City University, Dublin, Ireland; School of Nursing, Psychotherapy and Community Health, Dublin City University, Dublin 9, Ireland
| | - Finbarr O'Sullivan
- National Institute for Cellular and Biotechnology, Dublin City University, Dublin, Ireland; SSPC, The SFI Research Centre for Pharmaceuticals
| | - Donal J O'Gorman
- 3U Diabetes Partnership, School of Health and Human Performance, Dublin City University, Dublin, Ireland; National Institute for Cellular and Biotechnology, Dublin City University, Dublin, Ireland; SSPC, The SFI Research Centre for Pharmaceuticals.
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121
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Kayhani K, Barreto FS. Disproportionate role of nuclear-encoded proteins in organismal and mitochondrial thermal performance in a copepod. J Exp Biol 2023; 226:jeb246085. [PMID: 37947077 DOI: 10.1242/jeb.246085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 10/30/2023] [Indexed: 11/12/2023]
Abstract
Determining the mechanisms by which organisms evolve thermal tolerance is crucial to predicting how populations may respond to changes in local temperature regimes. Although evidence of relationships between mitochondrial background and thermal adaptation have been found, the presence of both nuclear-encoded and mitochondrial DNA (mtDNA)-encoded proteins warrants experiments aimed at parsing out the relative role of each genome in thermal adaptation. We investigated the relative role of mtDNA-encoded products in thermal tolerance between two divergent populations of Tigriopus californicus using first-generation (F1) hybrids that vary in maternally inherited mtDNA but are heterozygous for population-specific alleles across nuclear loci. We tested two measures of thermal tolerance, (1) survivorship to acute thermal stress and (2) thermal stability of mitochondrial performance in Complex I-fueled ATP synthesis, both across a range of increasing temperatures. We found that the southern population (San Diego, CA, USA) outperformed the northern population (Strawberry Hill, OR, USA) in survivorship, and that both reciprocal F1 hybrid crosses had intermediate survival. Mitochondria from the San Diego population displayed greater stability in ATP synthesis with increasing temperatures compared with those from Strawberry Hill. Interestingly, hybrids from both cross directions had synthesis profiles that were very similar to that of Strawberry Hill. Taken together, these results suggest that the relative role of the mtDNA in these phenotypes is negligible compared with that of elements encoded by nuclear DNA in this system.
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Affiliation(s)
- Kamron Kayhani
- Department of Integrative Biology, Oregon State University, Corvallis, OR 97331, USA
| | - Felipe S Barreto
- Department of Integrative Biology, Oregon State University, Corvallis, OR 97331, USA
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Walsh MA, Musci RV, Jacobs RA, Hamilton KL. A practical perspective on how to develop, implement, execute, and reproduce high-resolution respirometry experiments: The physiologist's guide to an Oroboros O2k. FASEB J 2023; 37:e23280. [PMID: 37899680 DOI: 10.1096/fj.202301644rr] [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: 08/15/2023] [Revised: 09/29/2023] [Accepted: 10/13/2023] [Indexed: 10/31/2023]
Abstract
The development of high-resolution respirometry (HRR) has greatly expanded the analytical scope to study mitochondrial respiratory control relative to specific tissue/cell types across various metabolic states. Specifically, the Oroboros Oxygraph 2000 (O2k) is a common tool for measuring rates of mitochondrial respiration and is the focus of this perspective. The O2k platform is amenable for answering numerous bioenergetic questions. However, inherent variability with HRR-derived data, both within and amongst users, can impede progress in bioenergetics research. Therefore, we advocate for several vital considerations when planning and conducting O2k experiments to ultimately enhance transparency and reproducibility across laboratories. In this perspective, we offer guidance for best practices of mitochondrial preparation, protocol selection, and measures to increase reproducibility. The goal of this perspective is to propagate the use of the O2k, enhance reliability and validity for both new and experienced O2k users, and provide a reference for peer reviewers.
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Affiliation(s)
- Maureen A Walsh
- Health and Exercise Science Department, Colorado State University, Fort Collins, Colorado, USA
| | - Robert V Musci
- Health and Human Sciences Department, Loyola Marymount University, Los Angeles, California, USA
| | - Robert A Jacobs
- Department of Human Physiology and Nutrition, University of Colorado Colorado Springs (UCCS), Colorado Springs, Colorado, USA
- William J. Hybl Sports Medicine and Performance Center, Colorado Springs, Colorado, USA
| | - Karyn L Hamilton
- Health and Exercise Science Department, Colorado State University, Fort Collins, Colorado, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, Colorado, USA
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123
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Owesny P, Grune T. The link between obesity and aging - insights into cardiac energy metabolism. Mech Ageing Dev 2023; 216:111870. [PMID: 37689316 DOI: 10.1016/j.mad.2023.111870] [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: 07/11/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023]
Abstract
Obesity and aging are well-established risk factors for a range of diseases, including cardiovascular diseases and type 2 diabetes. Given the escalating prevalence of obesity, the aging population, and the subsequent increase in cardiovascular diseases, it is crucial to investigate the underlying mechanisms involved. Both aging and obesity have profound effects on the energy metabolism through various mechanisms, including metabolic inflexibility, altered substrate utilization for energy production, deregulated nutrient sensing, and mitochondrial dysfunction. In this review, we aim to present and discuss the hypothesis that obesity, due to its similarity in changes observed in the aging heart, may accelerate the process of cardiac aging and exacerbate the clinical outcomes of elderly individuals with obesity.
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Affiliation(s)
- Patricia Owesny
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany; DZHK (German Center for Cardiovascular Research), partner site Berlin, Berlin, Germany
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany; DZHK (German Center for Cardiovascular Research), partner site Berlin, Berlin, Germany; German Center for Diabetes Research (DZD), München-Neuherberg, Germany.
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Lai Y, Loy F, Isola M, Noli R, Rinaldi A, Lobina C, Vargiu R, Cesare Marincola F, Isola R. Male and Female Mitochondria Respond Differently after Exercising in Acute Hypoxia. Biomedicines 2023; 11:3149. [PMID: 38137370 PMCID: PMC10740434 DOI: 10.3390/biomedicines11123149] [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: 08/31/2023] [Revised: 11/10/2023] [Accepted: 11/20/2023] [Indexed: 12/24/2023] Open
Abstract
The use of hypoxic devices among athletes who train in normobaric hypoxia has become increasingly popular; however, the acute effects on heart and brain metabolism are not yet fully understood. This study aimed to investigate the mitochondrial bioenergetics in trained male and female Wistar rats after acute hypoxia training. The experimental plan included exercising for 30 min on a treadmill in a Plexiglas cage connected to a hypoxic generator set at 12.5% O2 or in normoxia. After the exercise, the rats were sacrificed, and their mitochondria were isolated from their brains and hearts. The bioenergetics for each complex of the electron transport chain was tested using a Clark-type electrode. The results showed that following hypoxia training, females experienced impaired oxidative phosphorylation through complex II in heart subsarcolemmal mitochondria, while males had an altered ADP/O in heart interfibrillar mitochondria, without any change in oxidative capacity. No differences from controls were evident in the brain, but an increased electron transport system efficiency was observed with complex I and IV substrates in males. Therefore, the study's findings suggest that hypoxia training affects the heart mitochondria of females more than males. This raises a cautionary flag for female athletes who use hypoxic devices.
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Affiliation(s)
- Ylenia Lai
- Department of Biological Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Francesco Loy
- Department of Biological Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Michela Isola
- Department of Biological Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Roberta Noli
- Department of Biological Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Andrea Rinaldi
- Department of Biological Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Carla Lobina
- Neuroscience Institute, Division of Cagliari, National Research Council of Italy, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Romina Vargiu
- Department of Biological Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Flaminia Cesare Marincola
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Raffaella Isola
- Department of Biological Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
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125
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MacColl Garfinkel A, Mnatsakanyan N, Patel JH, Wills AE, Shteyman A, Smith PJS, Alavian KN, Jonas EA, Khokha MK. Mitochondrial leak metabolism induces the Spemann-Mangold Organizer via Hif-1α in Xenopus. Dev Cell 2023; 58:2597-2613.e4. [PMID: 37673063 PMCID: PMC10840693 DOI: 10.1016/j.devcel.2023.08.015] [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: 06/23/2022] [Revised: 06/30/2023] [Accepted: 08/09/2023] [Indexed: 09/08/2023]
Abstract
An instructive role for metabolism in embryonic patterning is emerging, although a role for mitochondria is poorly defined. We demonstrate that mitochondrial oxidative metabolism establishes the embryonic patterning center, the Spemann-Mangold Organizer, via hypoxia-inducible factor 1α (Hif-1α) in Xenopus. Hypoxia or decoupling ATP production from oxygen consumption expands the Organizer by activating Hif-1α. In addition, oxygen consumption is 20% higher in the Organizer than in the ventral mesoderm, indicating an elevation in mitochondrial respiration. To reconcile increased mitochondrial respiration with activation of Hif-1α, we discovered that the "free" c-subunit ring of the F1Fo ATP synthase creates an inner mitochondrial membrane leak, which decouples ATP production from respiration at the Organizer, driving Hif-1α activation there. Overexpression of either the c-subunit or Hif-1α is sufficient to induce Organizer cell fates even when β-catenin is inhibited. We propose that mitochondrial leak metabolism could be a general mechanism for activating Hif-1α and Wnt signaling.
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Affiliation(s)
- Alexandra MacColl Garfinkel
- Pediatric Genomics Discovery Program, Department of Pediatrics and Genetics, Yale University School of Medicine, New Haven, CT 06510, USA; Section of Endocrinology, Department of Internal Medicine, Yale University, New Haven, CT 06510, USA
| | - Nelli Mnatsakanyan
- Department of Cellular and Molecular Physiology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Jeet H Patel
- Department of Biochemistry, University of Washington School of Medicine, Seattle, WA 98195, USA; Program in Molecular and Cellular Biology, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Andrea E Wills
- Department of Biochemistry, University of Washington School of Medicine, Seattle, WA 98195, USA; Institute for Stem Cell and Regenerative Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Amy Shteyman
- Section of Endocrinology, Department of Internal Medicine, Yale University, New Haven, CT 06510, USA
| | - Peter J S Smith
- Institute for Life Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | | | - Elizabeth Ann Jonas
- Section of Endocrinology, Department of Internal Medicine, Yale University, New Haven, CT 06510, USA.
| | - Mustafa K Khokha
- Pediatric Genomics Discovery Program, Department of Pediatrics and Genetics, Yale University School of Medicine, New Haven, CT 06510, USA.
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126
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Lee YT, Tan YJ, Oon CE. BZD9L1 Differentially Regulates Sirtuins in Liver-Derived Cells by Inducing Reactive Oxygen Species. Biomedicines 2023; 11:3059. [PMID: 38002059 PMCID: PMC10669747 DOI: 10.3390/biomedicines11113059] [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: 06/26/2023] [Revised: 11/04/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
Growing evidence has highlighted that mitochondrial dysfunction contributes to drug-induced toxicities and leads to drug attrition and post-market withdrawals. The acetylation or deacetylation of mitochondrial proteins can affect mitochondrial functions as the cells adapt to various cellular stresses and other metabolic challenges. SIRTs act as critical deacetylases in modulating mitochondrial function in response to drug toxicity, oxidative stress, reactive oxygen species (ROS), and energy metabolism. We previously showed that a recently characterised SIRT inhibitor (BZD9L1) is non-toxic in rodents in a short-term toxicity evaluation. However, the impact of BZD9L1 on mitochondrial function is unknown. This work aims to determine the effects of BZD9L1 on mitochondrial function in human normal liver and kidney-derived cell lines using the Agilent Seahorse Cell Mito Stress Test to complement our short-term toxicity evaluations in vivo. The Mito Stress assay revealed that BZD9L1 could potentially trigger oxidative stress by inducing ROS, which promotes proton leak and reduces coupling efficiency in liver-derived THLE cells. However, the same was not observed in human kidney-derived HEK293 cells. Interestingly, BZD9L1 had no impact on SIRT3 protein expression in both cell lines but affected SOD2 and its acetylated form at 72 h in THLE cells, indicating that BZD9L1 exerted its effect through SIRT3 activity rather than protein expression. In contrast, BZD9L1 reduced SIRT1 protein expression and impacted the p53 protein differently in both cell lines. Although BZD9L1 did not affect the spare respiratory capacity in vitro, these findings call for further validation of mitochondrial function through assessment of other mitochondrial parameters to evaluate the safety of BZD9L1.
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Affiliation(s)
| | | | - Chern Ein Oon
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Gelugor 11800, Penang, Malaysia; (Y.T.L.); (Y.J.T.)
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127
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Llorente-Folch I, Düssmann H, Watters O, Connolly NMC, Prehn JHM. Ketone body β-hydroxybutyrate (BHB) preserves mitochondrial bioenergetics. Sci Rep 2023; 13:19664. [PMID: 37952048 PMCID: PMC10640643 DOI: 10.1038/s41598-023-46776-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 11/04/2023] [Indexed: 11/14/2023] Open
Abstract
The ketogenic diet is an emerging therapeutic approach for refractory epilepsy, as well as certain rare and neurodegenerative disorders. The main ketone body, β-hydroxybutyrate (BHB), is the primary energy substrate endogenously produced in a ketogenic diet, however, mechanisms of its therapeutic actions remain unknown. Here, we studied the effects of BHB on mitochondrial energetics, both in non-stimulated conditions and during glutamate-mediated hyperexcitation. We found that glutamate-induced hyperexcitation stimulated mitochondrial respiration in cultured cortical neurons, and that this response was greater in cultures supplemented with BHB than with glucose. BHB enabled a stronger and more sustained maximal uncoupled respiration, indicating that BHB enables neurons to respond more efficiently to increased energy demands such as induced during hyperexcitation. We found that cytosolic Ca2+ was required for BHB-mediated enhancement of mitochondrial function, and that this enhancement was independent of the mitochondrial glutamate-aspartate carrier, Aralar/AGC1. Our results suggest that BHB exerts its protective effects against hyperexcitation by enhancing mitochondrial function through a Ca2+-dependent, but Aralar/AGC1-independent stimulation of mitochondrial respiration.
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Affiliation(s)
- I Llorente-Folch
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland.
- Centre for Systems Medicine, Royal College of Surgeons in Ireland, Dublin 2, Ireland.
- Department of Basic Sciences of Health, Area of Biochemistry and Molecular Biology, Universidad Rey Juan Carlos, 28922, Alcorcón, Madrid, Spain.
| | - H Düssmann
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland
- Centre for Systems Medicine, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - O Watters
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland
- SFI FUTURE-NEURO Research Centre, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - N M C Connolly
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland
- Centre for Systems Medicine, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Jochen H M Prehn
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland.
- Centre for Systems Medicine, Royal College of Surgeons in Ireland, Dublin 2, Ireland.
- SFI FUTURE-NEURO Research Centre, Royal College of Surgeons in Ireland, Dublin 2, Ireland.
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128
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Lombardi P, Karadayian AG, Guerra JI, Bustamante J, Rodríguez de Lores Arnaiz G, Lores-Arnaiz S. Mitochondrial bioenergetics and cytometric characterization of a synaptosomal preparation from mouse brain cortex. Mitochondrion 2023; 73:95-107. [PMID: 37944836 DOI: 10.1016/j.mito.2023.10.002] [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: 12/30/2022] [Revised: 09/06/2023] [Accepted: 10/28/2023] [Indexed: 11/12/2023]
Abstract
Mitochondrial function at synapses can be assessed in isolated nerve terminals. Synaptosomes are structures obtained in vitro by detaching the nerve endings from neuronal bodies under controlled homogenization conditions. Several protocols have been described for the preparation of intact synaptosomal fractions. Herein a fast and economical method to obtain synaptosomes with optimal intrasynaptic mitochondria functionality was described. Synaptosomal fractions were obtained from mouse brain cortex by differential centrifugation followed by centrifugation in a Ficoll gradient. The characteristics of the subcellular particles obtained were analyzed by flow cytometry employing specific tools. Integrity and specificity of the obtained organelles were evaluated by calcein and SNAP-25 probes. The proportion of positive events of the synaptosomal preparation was 75 ± 2 % and 48 ± 7% for calcein and Synaptosomal-Associated Protein of 25 kDa (SNAP-25), respectively. Mitochondrial integrity was evaluated by flow cytometric analysis of cardiolipin content, which indicated that 73 ± 1% of the total events were 10 N-nonylacridine orange (NAO)-positive. Oxygen consumption, ATP production and mitochondrial membrane potential determinations showed that mitochondria inside synaptosomes remained functional after the isolation procedure. Mitochondrial and synaptosomal enrichment were determined by measuring synaptosomes/ homogenate ratio of specific markers. Functionality of synaptosomes was verified by nitric oxide detection after glutamate addition. As compared with other methods, the present protocol can be performed briefly, does not imply high economic costs, and provides an useful tool for the isolation of a synaptosomal preparation with high mitochondrial respiratory capacity and an adequate integrity and function of intraterminal mitochondria.
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Affiliation(s)
- Paulina Lombardi
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Fisicoquímica, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular "Profesor Alberto Boveris" (IBIMOL), Buenos Aires, Argentina
| | - Analía G Karadayian
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Fisicoquímica, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular "Profesor Alberto Boveris" (IBIMOL), Buenos Aires, Argentina
| | - Juan I Guerra
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Fisicoquímica, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular "Profesor Alberto Boveris" (IBIMOL), Buenos Aires, Argentina
| | | | - Georgina Rodríguez de Lores Arnaiz
- Universidad de Buenos Aires, Facultad de Medicina, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Instituto de Biología Celular y Neurociencias "Profesor Eduardo De Robertis" (IBCN), Buenos Aires, Argentina
| | - Silvia Lores-Arnaiz
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Fisicoquímica, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular "Profesor Alberto Boveris" (IBIMOL), Buenos Aires, Argentina.
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129
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Meyer JN, Pan WK, Ryde IT, Alexander T, Klein-Adams JC, Ndirangu DS, Falvo MJ. Bioenergetic function is decreased in peripheral blood mononuclear cells of veterans with Gulf War Illness. PLoS One 2023; 18:e0287412. [PMID: 37910447 PMCID: PMC10619881 DOI: 10.1371/journal.pone.0287412] [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: 06/13/2023] [Accepted: 09/26/2023] [Indexed: 11/03/2023] Open
Abstract
Gulf War Illness (GWI) is a major health problem for approximately 250,000 Gulf War (GW) veterans, but the etiology of GWI is unclear. We hypothesized that mitochondrial dysfunction is an important contributor to GWI, based on the similarity of some GWI symptoms to those occurring in some mitochondrial diseases; the plausibility that certain pollutants to which GW veterans were exposed affect mitochondria; mitochondrial effects observed in studies in laboratory models of GWI; and previous evidence of mitochondrial outcomes in studies in GW veterans. A primary role of mitochondria is generation of energy via oxidative phosphorylation. However, direct assessment of mitochondrial respiration, reflecting oxidative phosphorylation, has not been carried out in veterans with GWI. In this case-control observational study, we tested multiple measures of mitochondrial function and integrity in a cohort of 114 GW veterans, 80 with and 34 without GWI as assessed by the Kansas definition. In circulating white blood cells, we analyzed multiple measures of mitochondrial respiration and extracellular acidification, a proxy for non-aerobic energy generation; mitochondrial DNA (mtDNA) copy number; mtDNA damage; and nuclear DNA damage. We also collected detailed survey data on demographics; deployment; self-reported exposure to pesticides, pyridostigmine bromide, and chemical and biological warfare agents; and current biometrics, health and activity levels. We observed a 9% increase in mtDNA content in blood in veterans with GWI, but did not detect differences in DNA damage. Basal and ATP-linked oxygen consumption were respectively 42% and 47% higher in veterans without GWI, after adjustment for mtDNA amount. We did not find evidence for a compensatory increase in anaerobic energy generation: extracellular acidification was also lower in GWI (12% lower at baseline). A subset of 27 and 26 veterans returned for second and third visits, allowing us to measure stability of mitochondrial parameters over time. mtDNA CN, mtDNA damage, ATP-linked OCR, and spare respiratory capacity were moderately replicable over time, with intraclass correlation coefficients of 0.43, 0.44, 0.50, and 0.57, respectively. Other measures showed higher visit-to-visit variability. Many measurements showed lower replicability over time among veterans with GWI compared to veterans without GWI. Finally, we found a strong association between recalled exposure to pesticides, pyridostigmine bromide, and chemical and biological warfare agents and GWI (p < 0.01, p < 0.01, and p < 0.0001, respectively). Our results demonstrate decreased mitochondrial respiratory function as well as decreased glycolytic activity, both of which are consistent with decreased energy availability, in peripheral blood mononuclear cells in veterans with GWI.
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Affiliation(s)
- Joel N. Meyer
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
| | - William K. Pan
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
| | - Ian T. Ryde
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
| | - Thomas Alexander
- Department of Veterans Affairs, War Related Illness and Injury Study Center, East Orange, NJ, United States of America
| | - Jacquelyn C. Klein-Adams
- Department of Veterans Affairs, War Related Illness and Injury Study Center, East Orange, NJ, United States of America
| | - Duncan S. Ndirangu
- Department of Veterans Affairs, War Related Illness and Injury Study Center, East Orange, NJ, United States of America
| | - Michael J. Falvo
- Department of Veterans Affairs, War Related Illness and Injury Study Center, East Orange, NJ, United States of America
- New Jersey Medical School, Rutgers Biomedical and Health Sciences, Newark, NJ, United States of America
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130
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Nesci S. Proton leak through the UCPs and ANT carriers and beyond: A breath for the electron transport chain. Biochimie 2023; 214:77-85. [PMID: 37336388 DOI: 10.1016/j.biochi.2023.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 06/16/2023] [Indexed: 06/21/2023]
Abstract
Mitochondria produce heat as a result of an ineffective H+ cycling of mitochondria respiration across the inner mitochondrial membrane (IMM). This event present in all mitochondria, known as proton leak, can decrease protonmotive force (Δp) and restore mitochondrial respiration by partially uncoupling the substrate oxidation from the ADP phosphorylation. During impaired conditions of ATP generation with F1FO-ATPase, the Δp increases and IMM is hyperpolarized. In this bioenergetic state, the respiratory complexes support H+ transport until the membrane potential stops the H+ pump activity. Consequently, the electron transfer is stalled and the reduced form of electron carriers of the respiratory chain can generate O2∙¯ triggering the cascade of ROS formation and oxidative stress. The physiological function to attenuate the production of O2∙¯ by Δp dissipation can be attributed to the proton leak supported by the translocases of IMM.
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Affiliation(s)
- Salvatore Nesci
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, 40064, BO, Italy.
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131
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Grayson C, Mailloux RJ. Coenzyme Q 10 and nicotinamide nucleotide transhydrogenase: Sentinels for mitochondrial hydrogen peroxide signaling. Free Radic Biol Med 2023; 208:260-271. [PMID: 37573896 DOI: 10.1016/j.freeradbiomed.2023.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/21/2023] [Accepted: 08/08/2023] [Indexed: 08/15/2023]
Abstract
Mitochondria use hydrogen peroxide (H2O2) as a mitokine for cell communication. H2O2 output for signaling depends on its rate of production and degradation, both of which are strongly affected by the redox state of the coenzyme Q10 (CoQ) pool and NADPH availability. Here, we propose the CoQ pool and nicotinamide nucleotide transhydrogenase (NNT) have evolved to be central modalities for mitochondrial H2O2 signaling. Both factors play opposing yet equally important roles in dictating H2O2 availability because they are connected to one another by two central parameters in bioenergetics: electron supply and Δp. The CoQ pool is the central point of convergence for electrons from various dehydrogenases and the electron transport chain (ETC). The increase in Δp creates a significant amount of protonic backpressure on mitochondria to promote H2O2 genesis through CoQ pool reduction. These same factors also drive the activity of NNT, which uses electrons and the Δp to eliminate H2O2. In this way, electron supply and the magnitude of the Δp manifests as a redox connection between the two sentinels, CoQ and NNT, which serve as opposing yet equally important forces required for budgeting H2O2. Taken together, CoQ and NNT are sentinels linked through mitochondrial bioenergetics to manage H2O2 availability for interorganelle and intercellular redox signaling.
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Affiliation(s)
- Cathryn Grayson
- The School of Human Nutrition, Faculty of Agricultural and Environmental Sciences, McGill University, Ste.-Anne-de-Bellevue, Quebec, Canada
| | - Ryan J Mailloux
- The School of Human Nutrition, Faculty of Agricultural and Environmental Sciences, McGill University, Ste.-Anne-de-Bellevue, Quebec, Canada.
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132
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Singh S, Bruder-Nascimento A, Costa RM, Alves JV, Bharathi S, Goetzman ES, Bruder-Nascimento T. Adjusted vascular contractility relies on integrity of progranulin pathway: Insights into mitochondrial function. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.27.564485. [PMID: 37961631 PMCID: PMC10634918 DOI: 10.1101/2023.10.27.564485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Objective Cardiovascular disease (CVD) is a global health crisis and a leading cause of mortality. The intricate interplay between vascular contractility and mitochondrial function is central to CVD pathogenesis. The progranulin gene (GRN) encodes glycoprotein progranulin (PGRN), a ubiquitous molecule with known anti-inflammatory property. However, the role of PGRN in CVD remains enigmatic. In this study, we sought to dissect the significance of PGRN in the regulation vascular contractility and investigate the interface between PGRN and mitochondrial quality. Method Our investigation utilized aortae from male and female C57BL6/J wild-type (PGRN+/+) and B6(Cg)-Grntm1.1Aidi/J (PGRN-/-) mice, encompassing wire myograph assays to assess vascular contractility and primary aortic vascular smooth muscle cells (VSMCs) for mechanistic insights. Results Our results showed suppression of contractile activity in PGRN-/- VSMCs and aorta, followed by reduced α-smooth muscle actin expression. Mechanistically, PGRN deficiency impaired mitochondrial oxygen consumption rate (OCR), complex I activity, mitochondrial turnover, and mitochondrial redox signaling, while restoration of PGRN levels in aortae from PGRN-/- mice via lentivirus delivery ameliorated contractility and boosted OCR. In addition, VSMC overexpressing PGRN displayed higher mitochondrial respiration and complex I activity accompanied by cellular hypercontractility. Furthermore, increased PGRN triggered lysosome biogenesis by regulating transcription factor EB and accelerated mitophagy flux in VSMC, while treatment with spermidine, an autophagy inducer, improved mitochondrial phenotype and enhanced vascular contractility. Finally, angiotensin II failed to induce vascular contractility in PGRN-/- suggesting a key role of PGRN to maintain the vascular tone. Conclusion Our findings suggest that PGRN preserves the vascular contractility via regulating mitophagy flux, mitochondrial complex I activity, and redox signaling. Therefore, loss of PGRN function appears as a pivotal risk factor in CVD development.
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Affiliation(s)
- Shubhnita Singh
- Department of Pediatrics at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Center for Pediatrics Research in Obesity and Metabolism (CPROM) at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Endocrinology Division at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, USA
| | - Ariane Bruder-Nascimento
- Department of Pediatrics at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Center for Pediatrics Research in Obesity and Metabolism (CPROM) at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Endocrinology Division at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
| | - Rafael M Costa
- Department of Pediatrics at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Center for Pediatrics Research in Obesity and Metabolism (CPROM) at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Endocrinology Division at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Juliano V Alves
- Department of Pediatrics at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Center for Pediatrics Research in Obesity and Metabolism (CPROM) at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Endocrinology Division at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Sivakama Bharathi
- Department of Pediatrics at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
| | - Eric S Goetzman
- Department of Pediatrics at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, USA
- Genetic and Genomic Medicine Division at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
| | - Thiago Bruder-Nascimento
- Department of Pediatrics at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Center for Pediatrics Research in Obesity and Metabolism (CPROM) at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Endocrinology Division at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
- Vascular Medicine Institute (VMI), University of Pittsburgh, Pittsburgh, PA, USA
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133
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Sciandra F, Bottoni P, De Leo M, Braca A, Brancaccio A, Bozzi M. Verbascoside Elicits Its Beneficial Effects by Enhancing Mitochondrial Spare Respiratory Capacity and the Nrf2/HO-1 Mediated Antioxidant System in a Murine Skeletal Muscle Cell Line. Int J Mol Sci 2023; 24:15276. [PMID: 37894956 PMCID: PMC10607197 DOI: 10.3390/ijms242015276] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Muscle weakness and muscle loss characterize many physio-pathological conditions, including sarcopenia and many forms of muscular dystrophy, which are often also associated with mitochondrial dysfunction. Verbascoside, a phenylethanoid glycoside of plant origin, also named acteoside, has shown strong antioxidant and anti-fatigue activity in different animal models, but the molecular mechanisms underlying these effects are not completely understood. This study aimed to investigate the influence of verbascoside on mitochondrial function and its protective role against H2O2-induced oxidative damage in murine C2C12 myoblasts and myotubes pre-treated with verbascoside for 24 h and exposed to H2O2. We examined the effects of verbascoside on cell viability, intracellular reactive oxygen species (ROS) production and mitochondrial function through high-resolution respirometry. Moreover, we verified whether verbascoside was able to stimulate nuclear factor erythroid 2-related factor (Nrf2) activity through Western blotting and confocal fluorescence microscopy, and to modulate the transcription of its target genes, such as heme oxygenase-1 (HO-1) and peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), by Real Time PCR. We found that verbascoside (1) improved mitochondrial function by increasing mitochondrial spare respiratory capacity; (2) mitigated the decrease in cell viability induced by H2O2 and reduced ROS levels; (3) promoted the phosphorylation of Nrf2 and its nuclear translocation; (4) increased the transcription levels of HO-1 and, in myoblasts but not in myotubes, those of PGC-1α. These findings contribute to explaining verbascoside's ability to relieve muscular fatigue and could have positive repercussions for the development of therapies aimed at counteracting muscle weakness and mitochondrial dysfunction.
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Affiliation(s)
- Francesca Sciandra
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”—SCITEC Sede di Roma, Largo F. Vito, 00168 Roma, Italy
| | - Patrizia Bottoni
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Sezione di Biochimica, Università Cattolica del Sacro Cuore di Roma, Largo F. Vito 1, 00168 Roma, Italy
| | - Marinella De Leo
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
| | - Alessandra Braca
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
| | - Andrea Brancaccio
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”—SCITEC Sede di Roma, Largo F. Vito, 00168 Roma, Italy
- School of Biochemistry, University of Bristol, Bristol BS8 1TD, UK
| | - Manuela Bozzi
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”—SCITEC Sede di Roma, Largo F. Vito, 00168 Roma, Italy
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Sezione di Biochimica, Università Cattolica del Sacro Cuore di Roma, Largo F. Vito 1, 00168 Roma, Italy
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Krajčová A, Němcová V, Halačová M, Waldauf P, Balík M, Duška F. Amiodarone but not propafenone impairs bioenergetics and autophagy of human myocardial cells. Toxicol Appl Pharmacol 2023; 477:116676. [PMID: 37661063 DOI: 10.1016/j.taap.2023.116676] [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: 03/08/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
Cardiac and extra-cardiac side effects of common antiarrhythmic agents might be related to drug-induced mitochondrial dysfunction. Supratherapeutic doses of amiodarone have been shown to impair mitochondria in animal studies, whilst influence of propafenone on cellular bioenergetics is unknown. We aimed to assess effects of protracted exposure to pharmacologically relevant doses of amiodarone and propafenone on cellular bioenergetics and mitochondrial biology of human and mouse cardiomyocytes. In this study, HL-1 mouse atrial cardiomyocytes and primary human cardiomyocytes derived from the ventricles of the adult heart were exposed to 2 and 7 μg/mL of either amiodarone or propafenone. After 24 h, extracellular flux analysis and confocal laser scanning microscopy were used to measure mitochondrial functions. Autophagy was assessed by western blots and live-cell imaging of lysosomes. In human cardiomyocytes, amiodarone significantly reduced mitochondrial membrane potential and ATP production, in association with an inhibition of fatty acid oxidation and impaired complex I- and II-linked respiration in the electron transport chain. Expectedly, this led to increased anaerobic glycolysis. Amiodarone increased the production of reactive oxygen species and autophagy was also markedly affected. In contrast, propafenone-exposed cardiomyocytes did not exert any impairment of cellular bioenergetics. Similar changes after amiodarone treatment were observed during identical experiments performed on HL-1 mouse cardiomyocytes, suggesting a comparable pharmacodynamics of amiodarone among mammalian species. In conclusion, amiodarone but not propafenone in near-therapeutic concentrations causes a pattern of mitochondrial dysfunction with affected autophagy and metabolic switch from oxidative metabolism to anaerobic glycolysis in human cardiomyocytes.
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Affiliation(s)
- Adéla Krajčová
- Department of Anaesthesia and Intensive Care of The Third Faculty of Medicine and Královské Vinohrady University Hospital, OXYLAB-Laboratory for Mitochondrial Physiology, Charles University, Prague, Czech Republic
| | - Vlasta Němcová
- Department of Biochemistry, Cell and Molecular Biology and Centre for Research on Nutrition, Metabolism and Diabetes, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Milada Halačová
- Department of Anaesthesia and Intensive Care of The Third Faculty of Medicine and Královské Vinohrady University Hospital, OXYLAB-Laboratory for Mitochondrial Physiology, Charles University, Prague, Czech Republic; Department of Pharmacology of The Second Medical Faculty, Charles University, Prague, Czech Republic
| | - Petr Waldauf
- Department of Anaesthesia and Intensive Care of The Third Faculty of Medicine and Královské Vinohrady University Hospital, OXYLAB-Laboratory for Mitochondrial Physiology, Charles University, Prague, Czech Republic
| | - Martin Balík
- Department of Anaesthesia and Intensive Care of The First Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic
| | - František Duška
- Department of Anaesthesia and Intensive Care of The Third Faculty of Medicine and Královské Vinohrady University Hospital, OXYLAB-Laboratory for Mitochondrial Physiology, Charles University, Prague, Czech Republic.
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135
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Alsharabasy AM, Aljaabary A, Bohara R, Farràs P, Glynn SA, Pandit A. Nitric Oxide-Scavenging, Anti-Migration Effects, and Glycosylation Changes after Hemin Treatment of Human Triple-Negative Breast Cancer Cells: A Mechanistic Study. ACS Pharmacol Transl Sci 2023; 6:1416-1432. [PMID: 37854626 PMCID: PMC10580390 DOI: 10.1021/acsptsci.3c00115] [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: 06/09/2023] [Indexed: 10/20/2023]
Abstract
The enhanced expression of nitric oxide (•NO) synthase predicts triple-negative breast cancer outcome and its resistance to different therapeutics. Our earlier work demonstrated the efficiency of hemin to scavenge the intra- and extracellular •NO, proposing its potency as a therapeutic agent for inhibiting cancer cell migration. In continuation, the present work evaluates the effects of •NO on the migration of MDA-MB-231 cells and how hemin modulates the accompanied cellular behavior, focusing on the corresponding expression of cellular glycoproteins, migration-associated markers, and mitochondrial functions. We demonstrated for the first time that while •NO induced cell migration, hemin contradicted that by •NO-scavenging. This was in combination with modulation of the •NO-enhanced glycosylation patterns of cellular proteins with inhibition of the expression of specific proteins involved in the epithelial-mesenchymal transition. These effects were in conjunction with changes in the mitochondrial functions related to both •NO, hemin, and its nitrosylated product. Together, these results suggest that hemin can be employed as a potential anti-migrating agent targeting •NO-scavenging and regulating the expression of migration-associated proteins.
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Affiliation(s)
- Amir M. Alsharabasy
- CÚRAM,
SFI Research Centre for Medical Devices, University of Galway, Galway H91 W2TY, Ireland
| | - Amal Aljaabary
- CÚRAM,
SFI Research Centre for Medical Devices, University of Galway, Galway H91 W2TY, Ireland
| | - Raghvendra Bohara
- CÚRAM,
SFI Research Centre for Medical Devices, University of Galway, Galway H91 W2TY, Ireland
| | - Pau Farràs
- CÚRAM,
SFI Research Centre for Medical Devices, University of Galway, Galway H91 W2TY, Ireland
- School
of Biological and Chemical Sciences, Ryan Institute, University of Galway, Galway H91 TK33, Ireland
| | - Sharon A. Glynn
- CÚRAM,
SFI Research Centre for Medical Devices, University of Galway, Galway H91 W2TY, Ireland
- Discipline
of Pathology, Lambe Institute for Translational Research, School of
Medicine, University of Galway, Galway H91 YR71, Ireland
| | - Abhay Pandit
- CÚRAM,
SFI Research Centre for Medical Devices, University of Galway, Galway H91 W2TY, Ireland
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136
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Desousa BR, Kim KKO, Jones AE, Ball AB, Hsieh WY, Swain P, Morrow DH, Brownstein AJ, Ferrick DA, Shirihai OS, Neilson A, Nathanson DA, Rogers GW, Dranka BP, Murphy AN, Affourtit C, Bensinger SJ, Stiles L, Romero N, Divakaruni AS. Calculation of ATP production rates using the Seahorse XF Analyzer. EMBO Rep 2023; 24:e56380. [PMID: 37548091 PMCID: PMC10561364 DOI: 10.15252/embr.202256380] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 07/05/2023] [Accepted: 07/14/2023] [Indexed: 08/08/2023] Open
Abstract
Oxidative phosphorylation and glycolysis are the dominant ATP-generating pathways in mammalian metabolism. The balance between these two pathways is often shifted to execute cell-specific functions in response to stimuli that promote activation, proliferation, or differentiation. However, measurement of these metabolic switches has remained mostly qualitative, making it difficult to discriminate between healthy, physiological changes in energy transduction or compensatory responses due to metabolic dysfunction. We therefore present a broadly applicable method to calculate ATP production rates from oxidative phosphorylation and glycolysis using Seahorse XF Analyzer data and empirical conversion factors. We quantify the bioenergetic changes observed during macrophage polarization as well as cancer cell adaptation to in vitro culture conditions. Additionally, we detect substantive changes in ATP utilization upon neuronal depolarization and T cell receptor activation that are not evident from steady-state ATP measurements. This method generates a single readout that allows the direct comparison of ATP produced from oxidative phosphorylation and glycolysis in live cells. Additionally, the manuscript provides a framework for tailoring the calculations to specific cell systems or experimental conditions.
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Affiliation(s)
- Brandon R Desousa
- Department of Molecular and Medical PharmacologyUniversity of California, Los AngelesLos AngelesCAUSA
| | - Kristen KO Kim
- Department of Molecular and Medical PharmacologyUniversity of California, Los AngelesLos AngelesCAUSA
| | - Anthony E Jones
- Department of Molecular and Medical PharmacologyUniversity of California, Los AngelesLos AngelesCAUSA
| | - Andréa B Ball
- Department of Molecular and Medical PharmacologyUniversity of California, Los AngelesLos AngelesCAUSA
| | - Wei Y Hsieh
- Department of Microbiology, Immunology, and Molecular GeneticsUniversity of California, Los AngelesLos AngelesCAUSA
| | | | - Danielle H Morrow
- Department of Molecular and Medical PharmacologyUniversity of California, Los AngelesLos AngelesCAUSA
| | | | | | - Orian S Shirihai
- Department of MedicineUniversity of California, Los AngelesLos AngelesCAUSA
| | | | - David A Nathanson
- Department of Molecular and Medical PharmacologyUniversity of California, Los AngelesLos AngelesCAUSA
| | | | | | | | | | - Steven J Bensinger
- Department of Microbiology, Immunology, and Molecular GeneticsUniversity of California, Los AngelesLos AngelesCAUSA
| | - Linsey Stiles
- Department of Molecular and Medical PharmacologyUniversity of California, Los AngelesLos AngelesCAUSA
- Department of MedicineUniversity of California, Los AngelesLos AngelesCAUSA
| | | | - Ajit S Divakaruni
- Department of Molecular and Medical PharmacologyUniversity of California, Los AngelesLos AngelesCAUSA
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137
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Amthor JS. ATP yield of plant respiration: potential, actual and unknown. ANNALS OF BOTANY 2023; 132:133-162. [PMID: 37409716 PMCID: PMC10550282 DOI: 10.1093/aob/mcad075] [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: 03/31/2023] [Accepted: 07/04/2023] [Indexed: 07/07/2023]
Abstract
BACKGROUND AND AIMS The ATP yield of plant respiration (ATP/hexose unit respired) quantitatively links active heterotrophic processes with substrate consumption. Despite its importance, plant respiratory ATP yield is uncertain. The aim here was to integrate current knowledge of cellular mechanisms with inferences required to fill knowledge gaps to generate a contemporary estimate of respiratory ATP yield and identify important unknowns. METHOD A numerical balance sheet model combining respiratory carbon metabolism and electron transport pathways with uses of the resulting transmembrane electrochemical proton gradient was created and parameterized for healthy, non-photosynthesizing plant cells catabolizing sucrose or starch to produce cytosolic ATP. KEY RESULTS Mechanistically, the number of c subunits in the mitochondrial ATP synthase Fo sector c-ring, which is unquantified in plants, affects ATP yield. A value of 10 was (justifiably) used in the model, in which case respiration of sucrose potentially yields about 27.5 ATP/hexose (0.5 ATP/hexose more from starch). Actual ATP yield often will be smaller than its potential due to bypasses of energy-conserving reactions in the respiratory chain, even in unstressed plants. Notably, all else being optimal, if 25 % of respiratory O2 uptake is via the alternative oxidase - a typically observed fraction - ATP yield falls 15 % below its potential. CONCLUSIONS Plant respiratory ATP yield is smaller than often assumed (certainly less than older textbook values of 36-38 ATP/hexose) leading to underestimation of active-process substrate requirements. This hinders understanding of ecological/evolutionary trade-offs between competing active processes and assessments of crop growth gains possible through bioengineering of processes that consume ATP. Determining the plant mitochondrial ATP synthase c-ring size, the degree of any minimally required (useful) bypasses of energy-conserving reactions in the respiratory chain, and the magnitude of any 'leaks' in the inner mitochondrial membrane are key research needs.
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Affiliation(s)
- J S Amthor
- Center for Ecosystem Science and Society and Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011, USA
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138
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Samartsev VN, Semenova AA, Belosludtsev KN, Dubinin MV. Modulators reducing the efficiency of oxidative ATP synthesis in mitochondria: protonophore uncouplers, cyclic redox agents, and decouplers. Biophys Rev 2023; 15:851-857. [PMID: 37974985 PMCID: PMC10643702 DOI: 10.1007/s12551-023-01160-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 09/25/2023] [Indexed: 11/19/2023] Open
Abstract
This work considers the main indicators of the oxidative phosphorylation efficiency in mitochondria: the ADP/O and H+/O ratios. Three groups of modulators that reduce the efficiency of oxidative phosphorylation are compared: protonophore uncouplers, cyclic redox compounds, and decouplers. It is noted that some of them are considered effective therapeutic agents. The paper analyzes the authors' original data on the mechanism of action of natural decouplers, represented by long-chain α,ω-dioic acids, as antioxidants. In conclusion, we discuss the hypothesis of their participation in the rescue of hepatocytes in various disorders of carbohydrate and lipid metabolism.
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Affiliation(s)
| | - Alena A. Semenova
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El 424001 Russia
| | - Konstantin N. Belosludtsev
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El 424001 Russia
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, 142290 Pushchino, Russia
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139
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Huang Z, Ito M, Zhang S, Toda T, Takeda JI, Ogi T, Ohno K. Extremely low-frequency electromagnetic field induces acetylation of heat shock proteins and enhances protein folding. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 264:115482. [PMID: 37717354 DOI: 10.1016/j.ecoenv.2023.115482] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/21/2023] [Accepted: 09/12/2023] [Indexed: 09/19/2023]
Abstract
The pervasive weak electromagnetic fields (EMF) inundate the industrialized society, but the biological effects of EMF as weak as 10 µT have been scarcely analyzed. Heat shock proteins (HSPs) are molecular chaperones that mediate a sequential stress response. HSP70 and HSP90 provide cells under undesirable situations with either assisting covalent folding of proteins or degrading improperly folded proteins in an ATP-dependent manner. Here we examined the effect of extremely low-frequency (ELF)-EMF on AML12 and HEK293 cells. Although the protein expression levels of HSP70 and HSP90 were reduced after an exposure to ELF-EMF for 3 h, acetylations of HSP70 and HSP90 were increased, which was followed by an enhanced binding affinities of HSP70 and HSP90 for HSP70/HSP90-organizing protein (HOP/STIP1). After 3 h exposure to ELF-EMF, the amount of mitochondria was reduced but the ATP level and the maximal mitochondrial oxygen consumption were increased, which was followed by the reduced protein aggregates and the increased cell viability. Thus, ELF-EMF exposure for 3 h activated acetylation of HSPs to enhance protein folding, which was returned to the basal level at 12 h. The proteostatic effects of ELF-EMF will be able to be applied to treat pathological states in humans.
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Affiliation(s)
- Zhizhou Huang
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mikako Ito
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shaochuan Zhang
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takuro Toda
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Jun-Ichi Takeda
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomoo Ogi
- Department of Genetics, Research Institute of Environmental Medicine (RIeM), Nagoya University, Nagoya, Japan
| | - Kinji Ohno
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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140
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Tinklenberg JA, Slick RA, Sutton J, Zhang L, Meng H, Beatka MJ, Vanden Avond M, Prom MJ, Ott E, Montanaro F, Heisner J, Toro R, Hardeman EC, Geurts AM, Stowe DF, Hill RB, Lawlor MW. Different Mouse Models of Nemaline Myopathy Harboring Acta1 Mutations Display Differing Abnormalities Related to Mitochondrial Biology. THE AMERICAN JOURNAL OF PATHOLOGY 2023; 193:1548-1567. [PMID: 37419385 PMCID: PMC10548277 DOI: 10.1016/j.ajpath.2023.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 06/20/2023] [Accepted: 06/23/2023] [Indexed: 07/09/2023]
Abstract
ACTA1 encodes skeletal muscle-specific α-actin, which polymerizes to form the thin filament of the sarcomere. Mutations in ACTA1 are responsible for approximately 30% of nemaline myopathy (NM) cases. Previous studies of weakness in NM have focused on muscle structure and contractility, but genetic issues alone do not explain the phenotypic heterogeneity observed in patients with NM or NM mouse models. To identify additional biological processes related to NM phenotypic severity, proteomic analysis was performed using muscle protein isolates from wild-type mice in comparison to moderately affected knock-in (KI) Acta1H40Y and the minimally affected transgenic (Tg) ACTA1D286G NM mice. This analysis revealed abnormalities in mitochondrial function and stress-related pathways in both mouse models, supporting an in-depth assessment of mitochondrial biology. Interestingly, evaluating each model in comparison to its wild-type counterpart identified different degrees of mitochondrial abnormality that correlated well with the phenotypic severity of the mouse model. Muscle histology, mitochondrial respiration, electron transport chain function, and mitochondrial transmembrane potential were all normal or minimally affected in the TgACTA1D286G mouse model. In contrast, the more severely affected KI.Acta1H40Y mice displayed significant abnormalities in relation to muscle histology, mitochondrial respirometry, ATP, ADP, and phosphate content, and mitochondrial transmembrane potential. These findings suggest that abnormal energy metabolism is related to symptomatic severity in NM and may constitute a contributor to phenotypic variability and a novel treatment target.
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Affiliation(s)
- Jennifer A Tinklenberg
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Clinical and Translational Science Institute, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Rebecca A Slick
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Clinical and Translational Science Institute, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jessica Sutton
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Liwen Zhang
- Mass Spectrometry and Proteomics Facility, Campus Chemical Instrument Center, The Ohio State University, Columbus, Ohio
| | - Hui Meng
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Margaret J Beatka
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Mark Vanden Avond
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Mariah J Prom
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Emily Ott
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Federica Montanaro
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neuroscience Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom; NIHR Great Ormond Street Hospital Biomedical Research Centre, London, United Kingdom
| | - James Heisner
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Rafael Toro
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Edna C Hardeman
- School of Medical Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Aron M Geurts
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Mellowes Center for Genomic Sciences and Precision Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - David F Stowe
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - R Blake Hill
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Michael W Lawlor
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin.
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141
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Boël M, Voituron Y, Roussel D. Body mass dependence of oxidative phosphorylation efficiency in liver mitochondria from mammals. Comp Biochem Physiol A Mol Integr Physiol 2023; 284:111490. [PMID: 37479023 DOI: 10.1016/j.cbpa.2023.111490] [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: 06/10/2023] [Revised: 07/18/2023] [Accepted: 07/18/2023] [Indexed: 07/23/2023]
Abstract
In eukaryotes, the performances of an organism are dependent on body mass and chemically supported by the mitochondrial production of ATP. Although the relationship between body mass and mitochondrial oxygen consumption is well described, the allometry of the transduction efficiency from oxygen to ATP production (ATP/O) is still poorly understood. Using a comparative approach, we investigated the oxygen consumption and ATP production of liver mitochondria from twelve species of mammals ranging from 5 g to 600 kg. We found that both oxygen consumption and ATP production are mass dependent but not the ATP/O at the maximal phosphorylating state. The results also showed that for sub-maximal phosphorylating states the ATP/O value positively correlated with body mass, irrespective of the metabolic intensity. This result contrasts with previous data obtained in mammalian muscles, suggesting a tissue-dependence of the body mass effect on mitochondrial efficiency.
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Affiliation(s)
- Mélanie Boël
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622 Villeurbanne, France; Univ Rennes, CNRS, UMR 6553 ECOBIO [(Ecosystèmes, biodiversité, évolution)], F-35000 Rennes, France.
| | - Yann Voituron
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622 Villeurbanne, France. https://twitter.com/YVoituron
| | - Damien Roussel
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622 Villeurbanne, France.
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142
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Slick RA, Tinklenberg JA, Sutton J, Zhang L, Meng H, Beatka MJ, Vanden Avond M, Prom MJ, Ott E, Montanaro F, Heisner J, Toro R, Granzier H, Geurts AM, Stowe DF, Hill RB, Lawlor MW. Aberrations in Energetic Metabolism and Stress-Related Pathways Contribute to Pathophysiology in the Neb Conditional Knockout Mouse Model of Nemaline Myopathy. THE AMERICAN JOURNAL OF PATHOLOGY 2023; 193:1528-1547. [PMID: 37422147 PMCID: PMC10548278 DOI: 10.1016/j.ajpath.2023.06.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 05/08/2023] [Accepted: 06/08/2023] [Indexed: 07/10/2023]
Abstract
Nemaline myopathy (NM) is a genetically and clinically heterogeneous disease that is diagnosed on the basis of the presence of nemaline rods on skeletal muscle biopsy. Although NM has typically been classified by causative genes, disease severity or prognosis cannot be predicted. The common pathologic end point of nemaline rods (despite diverse genetic causes) and an unexplained range of muscle weakness suggest that shared secondary processes contribute to the pathogenesis of NM. We speculated that these processes could be identified through a proteome-wide interrogation using a mouse model of severe NM in combination with pathway validation and structural/functional analyses. A proteomic analysis was performed using skeletal muscle tissue from the Neb conditional knockout mouse model compared with its wild-type counterpart to identify pathophysiologically relevant biological processes that might impact disease severity or provide new treatment targets. A differential expression analysis and Ingenuity Pathway Core Analysis predicted perturbations in several cellular processes, including mitochondrial dysfunction and changes in energetic metabolism and stress-related pathways. Subsequent structural and functional studies demonstrated abnormal mitochondrial distribution, decreased mitochondrial respiratory function, an increase in mitochondrial transmembrane potential, and extremely low ATP content in Neb conditional knockout muscles relative to wild type. Overall, the findings of these studies support a role for severe mitochondrial dysfunction as a novel contributor to muscle weakness in NM.
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Affiliation(s)
- Rebecca A Slick
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Clinical and Translational Science Institute, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jennifer A Tinklenberg
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Clinical and Translational Science Institute, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jessica Sutton
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Liwen Zhang
- Mass Spectrometry and Proteomics Facility, Campus Chemical Instrument Center, The Ohio State University, Columbus, Ohio
| | - Hui Meng
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Margaret J Beatka
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Mark Vanden Avond
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Mariah J Prom
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Emily Ott
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Federica Montanaro
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neuroscience Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom the NIHR Great Ormond Street Hospital Biomedical Research Centre, London, United Kingdom; NIHR Great Ormond Street Hospital Biomedical Research Centre, London, United Kingdom
| | - James Heisner
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Rafael Toro
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Henk Granzier
- College of Medicine, University of Arizona, Tucson, Arizona
| | - Aron M Geurts
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Mellowes Center for Genomic Sciences and Precision Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - David F Stowe
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Joint Department of Biomedical Engineering, Medical College of Wisconsin and Marquette University, Milwaukee, Wisconsin
| | - R Blake Hill
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Michael W Lawlor
- Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin.
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143
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Sullivan DI, Bello FM, Silva AG, Redding KM, Giordano L, Hinchie AM, Loughridge KE, Mora AL, Königshoff M, Kaufman BA, Jurczak MJ, Alder JK. Intact mitochondrial function in the setting of telomere-induced senescence. Aging Cell 2023; 22:e13941. [PMID: 37688329 PMCID: PMC10577573 DOI: 10.1111/acel.13941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/25/2023] [Accepted: 07/07/2023] [Indexed: 09/10/2023] Open
Abstract
Mitochondria play essential roles in metabolic support and signaling within all cells. Congenital and acquired defects in mitochondria are responsible for several pathologies, including premature entrance to cellar senescence. Conversely, we examined the consequences of dysfunctional telomere-driven cellular senescence on mitochondrial biogenesis and function. We drove senescence in vitro and in vivo by deleting the telomere-binding protein TRF2 in fibroblasts and hepatocytes, respectively. Deletion of TRF2 led to a robust DNA damage response, global changes in transcription, and induction of cellular senescence. In vitro, senescent cells had significant increases in mitochondrial respiratory capacity driven by increased cellular and mitochondrial volume. Hepatocytes with dysfunctional telomeres maintained their mitochondrial respiratory capacity in vivo, whether measured in intact cells or purified mitochondria. Induction of senescence led to the upregulation of overlapping and distinct genes in fibroblasts and hepatocytes, but transcripts related to mitochondria were preserved. Our results support that mitochondrial function and activity are preserved in telomere dysfunction-induced senescence, which may facilitate continued cellular functions.
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Affiliation(s)
- Daniel I. Sullivan
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease, Division of Pulmonary, Allergy, and Critical Care MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Fiona M. Bello
- Division of Endocrinology and MetabolismUniversity of PittsburghPittsburghPennsylvaniaUSA
- Center for Metabolism and Mitochondrial MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Agustin Gil Silva
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease, Division of Pulmonary, Allergy, and Critical Care MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Kevin M. Redding
- Center for Metabolism and Mitochondrial MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
- Heart, Lung, and Blood Vascular Medicine InstituteUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Luca Giordano
- Center for Metabolism and Mitochondrial MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
- Heart, Lung, and Blood Vascular Medicine InstituteUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Angela M. Hinchie
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease, Division of Pulmonary, Allergy, and Critical Care MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Kelly E. Loughridge
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease, Division of Pulmonary, Allergy, and Critical Care MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Ana L. Mora
- Division of Pulmonary, Critical Care and Sleep Medicine, Davis Heart Lung Research InstituteThe Ohio State UniversityColumbusOhioUSA
| | - Melanie Königshoff
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease, Division of Pulmonary, Allergy, and Critical Care MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Brett A. Kaufman
- Center for Metabolism and Mitochondrial MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
- Heart, Lung, and Blood Vascular Medicine InstituteUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Michael J. Jurczak
- Division of Endocrinology and MetabolismUniversity of PittsburghPittsburghPennsylvaniaUSA
- Center for Metabolism and Mitochondrial MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Jonathan K. Alder
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease, Division of Pulmonary, Allergy, and Critical Care MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
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144
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Harrington JS, Ryter SW, Plataki M, Price DR, Choi AMK. Mitochondria in health, disease, and aging. Physiol Rev 2023; 103:2349-2422. [PMID: 37021870 PMCID: PMC10393386 DOI: 10.1152/physrev.00058.2021] [Citation(s) in RCA: 129] [Impact Index Per Article: 129.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/07/2023] Open
Abstract
Mitochondria are well known as organelles responsible for the maintenance of cellular bioenergetics through the production of ATP. Although oxidative phosphorylation may be their most important function, mitochondria are also integral for the synthesis of metabolic precursors, calcium regulation, the production of reactive oxygen species, immune signaling, and apoptosis. Considering the breadth of their responsibilities, mitochondria are fundamental for cellular metabolism and homeostasis. Appreciating this significance, translational medicine has begun to investigate how mitochondrial dysfunction can represent a harbinger of disease. In this review, we provide a detailed overview of mitochondrial metabolism, cellular bioenergetics, mitochondrial dynamics, autophagy, mitochondrial damage-associated molecular patterns, mitochondria-mediated cell death pathways, and how mitochondrial dysfunction at any of these levels is associated with disease pathogenesis. Mitochondria-dependent pathways may thereby represent an attractive therapeutic target for ameliorating human disease.
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Affiliation(s)
- John S Harrington
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, New York-Presbyterian Hospital/Weill Cornell Medical Center, Weill Cornell Medicine, New York, New York, United States
| | | | - Maria Plataki
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, New York-Presbyterian Hospital/Weill Cornell Medical Center, Weill Cornell Medicine, New York, New York, United States
| | - David R Price
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, New York-Presbyterian Hospital/Weill Cornell Medical Center, Weill Cornell Medicine, New York, New York, United States
| | - Augustine M K Choi
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, New York-Presbyterian Hospital/Weill Cornell Medical Center, Weill Cornell Medicine, New York, New York, United States
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145
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Anunciado-Koza RVP, Guntur AR, Vary CP, Gartner CA, Nowak M, Koza RA. Purification of functional mouse skeletal muscle mitochondria using percoll density gradient centrifugation. BMC Res Notes 2023; 16:243. [PMID: 37777771 PMCID: PMC10544150 DOI: 10.1186/s13104-023-06519-4] [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: 10/13/2022] [Accepted: 09/20/2023] [Indexed: 10/02/2023] Open
Abstract
OBJECTIVE Our goal was to isolate purified mitochondria from mouse skeletal muscle using a Percoll density gradient and to assess bioenergetic function and purity via Seahorse Extracellular Flux (XF) Analyses and mass spectrometry. RESULTS Mitochondria isolated from murine quadriceps femoris skeletal muscle using a Percoll density gradient method allowed for minimally contaminated preparations with time from tissue harvest to mitochondrial isolation and quantification in about 3-4 h. Percoll purification from 100 to 200 mg fresh tissue yielded ~ 200-400 ug protein. Mitochondrial bioenergetics evaluated using the Seahorse XFe96 analyzer, a high-throughput respirometry platform, showed optimum mitochondrial input at 500 ng with respiratory control ratio ranging from 3.9 to 7.1 using various substrates demonstrating a high degree of functionality. Furthermore, proteomic analysis of Percoll-enriched mitochondria isolated from skeletal muscle using this method showed significant enrichment of mitochondrial proteins indicating high sample purity. This study established a methodology that ensures sufficient high quality mitochondria for downstream analyses such as mitochondrial bioenergetics and proteomics.
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Affiliation(s)
| | - Anyonya R Guntur
- MaineHealth Institute for Research, 81 Research Drive, Scarborough, ME, United States of America
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, United States of America
- Department of Medicine, Tufts University School of Medicine, Boston, MA, United States of America
| | - Calvin P Vary
- MaineHealth Institute for Research, 81 Research Drive, Scarborough, ME, United States of America
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, United States of America
- Department of Medicine, Tufts University School of Medicine, Boston, MA, United States of America
| | - Carlos A Gartner
- MaineHealth Institute for Research, 81 Research Drive, Scarborough, ME, United States of America
| | - Madeleine Nowak
- MaineHealth Institute for Research, 81 Research Drive, Scarborough, ME, United States of America
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, United States of America
| | - Robert A Koza
- MaineHealth Institute for Research, 81 Research Drive, Scarborough, ME, United States of America.
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, United States of America.
- Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA, United States of America.
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146
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Zhang X, Hou X, Xu C, Cheng S, Ni X, Shi Y, Yao Y, Chen L, Hu MG, Xia D. Kaempferol regulates the thermogenic function of adipocytes in high-fat-diet-induced obesity via the CDK6/RUNX1/UCP1 signaling pathway. Food Funct 2023; 14:8201-8216. [PMID: 37551935 DOI: 10.1039/d3fo00613a] [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: 08/09/2023]
Abstract
Activation of adipose tissue thermogenesis is a promising strategy in the treatment of obesity and obesity-related metabolic disorders. Kaempferol (KPF) is a predominant dietary flavonoid with multiple pharmacological properties, such as anti-inflammatory and antioxidant activities. In this study, we sought to characterize the role of KPF in adipocyte thermogenesis. We demonstrated that KPF-treated mice were protected from diet-induced obesity, glucose tolerance, and insulin resistance, accompanied by markedly increased energy expenditure, ex vivo oxygen consumption of white fat, and increased expression of proteins related to adaptive thermogenesis. KPF-promoted beige cell formation is a cell-autonomous effect, since the overexpression of cyclin-dependent kinase 6 (CDK6) in preadipocytes partially reversed browning phenotypes observed in KPF-treated cells. Overall, these data implicate that KPF is involved in promoting beige cell formation by suppressing CDK6 protein expression. This study provides evidence that KPF is a promising natural product for obesity treatment by boosting energy expenditure.
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Affiliation(s)
- Xiaoxi Zhang
- Department of Food Science and Nutrition, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
- Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Xiaoli Hou
- Department of Food Science and Nutrition, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
- Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Changyu Xu
- Department of Food Science and Nutrition, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Siyao Cheng
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Xintao Ni
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yueyue Shi
- Department of Food Science and Nutrition, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Yanjing Yao
- Department of Food Science and Nutrition, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Liangxin Chen
- Department of Food Science and Nutrition, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Miaofen G Hu
- Department of Medicine, Division of Hematology Oncology, Tufts Medical Center, Boston, MA, 02111, USA.
| | - Daozong Xia
- Department of Food Science and Nutrition, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
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147
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Diaz-Vegas A, Madsen S, Cooke KC, Carroll L, Khor JXY, Turner N, Lim XY, Astore MA, Morris J, Don A, Garfield A, Zarini S, Zemski Berry KA, Ryan A, Bergman BC, Brozinick JT, James DE, Burchfield JG. Mitochondrial electron transport chain, ceramide and Coenzyme Q are linked in a pathway that drives insulin resistance in skeletal muscle. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.10.532020. [PMID: 36945619 PMCID: PMC10028964 DOI: 10.1101/2023.03.10.532020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Insulin resistance (IR) is a complex metabolic disorder that underlies several human diseases, including type 2 diabetes and cardiovascular disease. Despite extensive research, the precise mechanisms underlying IR development remain poorly understood. Here, we provide new insights into the mechanistic connections between cellular alterations associated with IR, including increased ceramides, deficiency of coenzyme Q (CoQ), mitochondrial dysfunction, and oxidative stress. We demonstrate that elevated levels of ceramide in the mitochondria of skeletal muscle cells results in CoQ depletion and loss of mitochondrial respiratory chain components, leading to mitochondrial dysfunction and IR. Further, decreasing mitochondrial ceramide levels in vitro and in animal models (under chow and high fat diet) increased CoQ levels and was protective against IR. CoQ supplementation also rescued ceramide-associated IR. Examination of the mitochondrial proteome from human muscle biopsies revealed a strong correlation between the respirasome system and mitochondrial ceramide as key determinants of insulin sensitivity. Our findings highlight the mitochondrial Ceramide-CoQ-respiratory chain nexus as a potential foundation of an IR pathway that may also play a critical role in other conditions associated with ceramide accumulation and mitochondrial dysfunction, such as heart failure, cancer, and aging. These insights may have important clinical implications for the development of novel therapeutic strategies for the treatment of IR and related metabolic disorders.
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Affiliation(s)
- Alexis Diaz-Vegas
- Charles Perkins Centre, School of life and Environmental Sciences, University of Sydney, Sydney, Australia
| | - Soren Madsen
- Charles Perkins Centre, School of life and Environmental Sciences, University of Sydney, Sydney, Australia
| | - Kristen C. Cooke
- Charles Perkins Centre, School of life and Environmental Sciences, University of Sydney, Sydney, Australia
| | - Luke Carroll
- Charles Perkins Centre, School of life and Environmental Sciences, University of Sydney, Sydney, Australia
| | - Jasmine X. Y. Khor
- Charles Perkins Centre and School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW, 2050, Australia
| | - Nigel Turner
- Cellular Bioenergetics Laboratory, Victor Chang Cardiac Research Institute, Darlinghurst, NSW, Australia
| | - Xin Ying Lim
- Charles Perkins Centre and School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW, 2050, Australia
| | - Miro A. Astore
- Center for Computational Biology and Center for Computational Mathematics, Flatiron Institute, New York, NY 10010, USA
| | - Jonathan Morris
- School of Chemistry, UNSW Sydney, Sydney, 2052, NSW, Australia
| | - Anthony Don
- Charles Perkins Centre and School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW, 2050, Australia
| | - Amanda Garfield
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Simona Zarini
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Karin A. Zemski Berry
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Andrew Ryan
- Lilly Research Laboratories, Division of Eli Lilly and Company, Indianapolis, IN, USA
| | - Bryan C. Bergman
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Joseph T. Brozinick
- Lilly Research Laboratories, Division of Eli Lilly and Company, Indianapolis, IN, USA
| | - David E. James
- Charles Perkins Centre, School of life and Environmental Sciences, University of Sydney, Sydney, Australia
- Charles Perkins Centre and School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW, 2050, Australia
| | - James G. Burchfield
- Charles Perkins Centre, School of life and Environmental Sciences, University of Sydney, Sydney, Australia
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148
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Konadu B, Hosler JP, Gibert Y, Edwards KS. Analysis of oxygen consumption rates in zebrafish reveals differences based on sex, age and physical activity recovery. Front Physiol 2023; 14:1272366. [PMID: 37781232 PMCID: PMC10534073 DOI: 10.3389/fphys.2023.1272366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 09/04/2023] [Indexed: 10/03/2023] Open
Abstract
Introduction: Mitochondrial dysfunction is linked to a variety of human diseases. Understanding the dynamic alterations in mitochondrial respiration at various stages of development is important to our understanding of disease progression. Zebrafish provide a system for investigating mitochondrial function and alterations during different life stages. The purpose of this study was to investigate our ability to measure mitochondrial oxygen consumption rates in zebrafish embryos, larvae, and adults as an indicator of mitochondrial function. Methods: Basal respiration of entire zebrafish embryos (5 dpf), larvae (0.6-0.9 cm), young adults (3-month-old), and old adults (12-month-old) was measured using an Oroboros Oxygraph, with a stirrer speed of 26 rpm. For embryos and larvae, "leak" respiration (plus oligomycin), maximum respiration (plus uncoupler), non-mitochondrial respiration (plus inhibitors), and complex IV activity were also measured. To induce physical activity in adult fish, the stirrer speed was increased to 200 rpm. Results and Discussion: We demonstrate the ability to accurately measure respiration rates in zebrafish at various ages using the Oroboros Oxygraph. When comparing zebrafish embryos to larvae, embryos have a higher maximum respiration. Three-month-old zebrafish males have higher basal respiration than females, while 12-month-old zebrafish females exhibit greater rates of respiration than males and younger females. When the stirrer speed was increased, respiration rates decrease, but with differences depending on sex. This study demonstrates a simple and accessible method to assess zebrafish physiology by mitochondrial oxygen consumption measurements in an unmodified Oroboros Oxygraph. The method should facilitate studies to understand the intricate interplay between mitochondrial function, development, and aging.
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Affiliation(s)
- Bridget Konadu
- Department of Cell and Molecular Biology, Cancer Center and Research Institute, University of Mississippi Medical Center, Jackson, MS, United States
| | - Jonathan P. Hosler
- Department of Cell and Molecular Biology, Cancer Center and Research Institute, University of Mississippi Medical Center, Jackson, MS, United States
| | - Yann Gibert
- Department of Cell and Molecular Biology, Cancer Center and Research Institute, University of Mississippi Medical Center, Jackson, MS, United States
| | - Kristin S. Edwards
- Department of Cell and Molecular Biology, Cancer Center and Research Institute, University of Mississippi Medical Center, Jackson, MS, United States
- Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS, United States
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149
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Clemente-Suárez VJ, Redondo-Flórez L, Beltrán-Velasco AI, Ramos-Campo DJ, Belinchón-deMiguel P, Martinez-Guardado I, Dalamitros AA, Yáñez-Sepúlveda R, Martín-Rodríguez A, Tornero-Aguilera JF. Mitochondria and Brain Disease: A Comprehensive Review of Pathological Mechanisms and Therapeutic Opportunities. Biomedicines 2023; 11:2488. [PMID: 37760929 PMCID: PMC10526226 DOI: 10.3390/biomedicines11092488] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/02/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Mitochondria play a vital role in maintaining cellular energy homeostasis, regulating apoptosis, and controlling redox signaling. Dysfunction of mitochondria has been implicated in the pathogenesis of various brain diseases, including neurodegenerative disorders, stroke, and psychiatric illnesses. This review paper provides a comprehensive overview of the intricate relationship between mitochondria and brain disease, focusing on the underlying pathological mechanisms and exploring potential therapeutic opportunities. The review covers key topics such as mitochondrial DNA mutations, impaired oxidative phosphorylation, mitochondrial dynamics, calcium dysregulation, and reactive oxygen species generation in the context of brain disease. Additionally, it discusses emerging strategies targeting mitochondrial dysfunction, including mitochondrial protective agents, metabolic modulators, and gene therapy approaches. By critically analysing the existing literature and recent advancements, this review aims to enhance our understanding of the multifaceted role of mitochondria in brain disease and shed light on novel therapeutic interventions.
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Affiliation(s)
- Vicente Javier Clemente-Suárez
- Faculty of Sports Sciences, Universidad Europea de Madrid, Tajo Street, s/n, 28670 Madrid, Spain; (V.J.C.-S.); (J.F.T.-A.)
- Group de Investigación en Cultura, Educación y Sociedad, Universidad de la Costa, Barranquilla 080002, Colombia
| | - Laura Redondo-Flórez
- Department of Health Sciences, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, C/Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain
| | - Ana Isabel Beltrán-Velasco
- Psychology Department, Facultad de Ciencias de la Vida y la Naturaleza, Universidad Antonio de Nebrija, 28240 Madrid, Spain
| | - Domingo Jesús Ramos-Campo
- LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Science-INEF, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Pedro Belinchón-deMiguel
- Department of Nursing and Nutrition, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain;
| | | | - Athanasios A. Dalamitros
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sport Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Rodrigo Yáñez-Sepúlveda
- Faculty of Education and Social Sciences, Universidad Andres Bello, Viña del Mar 2520000, Chile;
| | - Alexandra Martín-Rodríguez
- Faculty of Sports Sciences, Universidad Europea de Madrid, Tajo Street, s/n, 28670 Madrid, Spain; (V.J.C.-S.); (J.F.T.-A.)
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150
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Lubawy J, Chowański SP, Colinet H, Słocińska M. Mitochondrial metabolism and oxidative stress in the tropical cockroach under fluctuating thermal regimes. J Exp Biol 2023; 226:jeb246287. [PMID: 37589559 DOI: 10.1242/jeb.246287] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/08/2023] [Indexed: 08/18/2023]
Abstract
The cockroach Gromphadorhina coquereliana can survive at low temperatures under extensive periods of cold stress. To assess energy management and insect adaptation in response to cold, we measured mitochondrial activity and oxidative stress in muscle and fat body tissues from G. coquereliana under a fluctuating thermal regime (FTR; stressed at 4°C for 3 h on 3 consecutive days, with or without 24 h recovery). Compared with our earlier work showing that a single exposure to cold significantly affects mitochondrial parameters, here, repeated exposure to cold triggered an acclimatory response, resulting in unchanged mitochondrial bioenergetics. Immediately after cold exposure, we observed an increase in the overall pool of ATP and a decrease in typical antioxidant enzyme activity. We also observed decreased activity of uncoupling protein 4 in muscle mitochondria. After 24 h of recovery, we observed an increase in expression of antioxidant enzymes in muscles and the fat body and a significant increase in the expression of UCP4 and HSP70 in the latter. This indicates that processes related to energy conversion and disturbance under cold stress may trigger different protective mechanisms in these tissues, and that these mechanisms must be activated to restore insect homeostasis. The mitochondrial parameters and enzymatic assays suggest that mitochondria are not affected during FTR but oxidative stress markers are decreased, and a 24 h recovery period allows for the restoration of redox and energy homeostasis, especially in the fat body. This confirms the crucial role of the fat body in intermediary metabolism and energy management in insects and in the response to repeated thermal stress.
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Affiliation(s)
- Jan Lubawy
- Department of Animal Physiology and Developmental Biology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, 61-614 Poznań, Poland
| | - Szymon P Chowański
- Department of Animal Physiology and Developmental Biology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, 61-614 Poznań, Poland
| | - Hervé Colinet
- ECOBIO - UMR 6553, Université de Rennes 1, CNRS, Rennes 35042, France
| | - Małgorzata Słocińska
- Department of Animal Physiology and Developmental Biology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, 61-614 Poznań, Poland
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