1
|
Pan T, Yang B, Yao S, Wang R, Zhu Y. Exploring the multifaceted role of adenosine nucleotide translocase 2 in cellular and disease processes: A comprehensive review. Life Sci 2024; 351:122802. [PMID: 38857656 DOI: 10.1016/j.lfs.2024.122802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/04/2024] [Accepted: 06/04/2024] [Indexed: 06/12/2024]
Abstract
Adenosine nucleotide translocases (ANTs) are a family of proteins abundant in the inner mitochondrial membrane, primarily responsible for shuttling ADP and ATP across the mitochondrial membrane. Additionally, ANTs are key players in balancing mitochondrial energy metabolism and regulating cell death. ANT2 isoform, highly expressed in undifferentiated and proliferating cells, is implicated in the development and drug resistance of various tumors. We conduct a detailed analysis of the potential mechanisms by which ANT2 may influence tumorigenesis and drug resistance. Notably, the significance of ANT2 extends beyond oncology, with roles in non-tumor cell processes including blood cell development, gastrointestinal motility, airway hydration, nonalcoholic fatty liver disease, obesity, chronic kidney disease, and myocardial development, making it a promising therapeutic target for multiple pathologies. To better understand the molecular mechanisms of ANT2, this review summarizes the structural properties, expression patterns, and basic functions of the ANT2 protein. In particular, we review and analyze the controversy surrounding ANT2, focusing on its role in transporting ADP/ATP across the inner mitochondrial membrane, its involvement in the composition of the mitochondrial permeability transition pore, and its participation in apoptosis.
Collapse
Affiliation(s)
- Tianhui Pan
- Laboratory of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China
| | - Bin Yang
- Laboratory of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China
| | - Sheng Yao
- Laboratory of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China
| | - Rui Wang
- Laboratory of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China
| | - Yongliang Zhu
- Laboratory of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China.
| |
Collapse
|
2
|
Wang W, Tan J, Liu X, Guo W, Li M, Liu X, Liu Y, Dai W, Hu L, Wang Y, Lu Q, Lee WX, Tang HW, Zhou Q. Cytoplasmic Endonuclease G promotes nonalcoholic fatty liver disease via mTORC2-AKT-ACLY and endoplasmic reticulum stress. Nat Commun 2023; 14:6201. [PMID: 37794041 PMCID: PMC10550995 DOI: 10.1038/s41467-023-41757-x] [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: 02/08/2023] [Accepted: 09/06/2023] [Indexed: 10/06/2023] Open
Abstract
Endonuclease G (ENDOG), a nuclear-encoded mitochondrial intermembrane space protein, is well known to be translocated into the nucleus during apoptosis. Recent studies have shown that ENDOG might enter the mitochondrial matrix to regulate mitochondrial genome cleavage and replication. However, little is known about the role of ENDOG in the cytosol. Our previous work showed that cytoplasmic ENDOG competitively binds with 14-3-3γ, which released TSC2 to repress mTORC1 signaling and induce autophagy. Here, we demonstrate that cytoplasmic ENDOG could also release Rictor from 14-3-3γ to activate the mTORC2-AKT-ACLY axis, resulting in acetyl-CoA production. Importantly, we observe that ENDOG could translocate to the ER, bind with Bip, and release IRE1a/PERK to activate the endoplasmic reticulum stress response, promoting lipid synthesis. Taken together, we demonstrate that loss of ENDOG suppresses acetyl-CoA production and lipid synthesis, along with reducing endoplasmic reticulum stress, which eventually alleviates high-fat diet-induced nonalcoholic fatty liver disease in female mice.
Collapse
Affiliation(s)
- Wenjun Wang
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, Guangdong, 523067, China.
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, Guangdong, 510632, China.
| | - Junyang Tan
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, Guangdong, 523067, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, Guangdong, 510632, China
| | - Xiaomin Liu
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, Guangdong, 523067, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, Guangdong, 510632, China
| | - Wenqi Guo
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, Guangdong, 523067, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, Guangdong, 510632, China
| | - Mengmeng Li
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, Guangdong, 523067, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, Guangdong, 510632, China
| | - Xinjie Liu
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, Guangdong, 523067, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, Guangdong, 510632, China
| | - Yanyan Liu
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, Guangdong, 523067, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, Guangdong, 510632, China
| | - Wenyu Dai
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, Guangdong, 523067, China
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, Guangdong, 510632, China
| | - Liubing Hu
- The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Yimin Wang
- GeneMind Biosciences Company Limited, No. 116, Qingshuihe 1st Road, Luohu District, Shenzhen, Guangdong, 518000, China
| | - Qiuxia Lu
- School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Wen Xing Lee
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore
| | - Hong-Wen Tang
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore
- Division of Cellular & Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre Singapore, Singapore, 169610, Singapore
| | - Qinghua Zhou
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, Guangdong, 523067, China.
- The Biomedical Translational Research Institute, Health Science Center (School of Medicine), Jinan University, Guangzhou, Guangdong, 510632, China.
- The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, 510632, China.
| |
Collapse
|
3
|
Sehim AE, Amin BH, Yosri M, Salama HM, Alkhalifah DH, Alwaili MA, Abd Elghaffar RY. GC-MS Analysis, Antibacterial, and Anticancer Activities of Hibiscus sabdariffa L. Methanolic Extract: In Vitro and In Silico Studies. Microorganisms 2023; 11:1601. [PMID: 37375103 DOI: 10.3390/microorganisms11061601] [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: 05/11/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
The emergence of bacteria that are resistant to several antibiotics has represented a serious hazard to human health globally. Bioactive metabolites from medicinal plants have a wide spectrum of therapeutic possibilities against resistant bacteria. Therefore, this study was performed to investigate the antibacterial efficacy of various extracts of three medicinal plants as Salvia officinalis L., Ziziphus spina-christi L., and Hibiscus sabdariffa L. against pathogenic Gram-negative Enterobacter cloacae (ATCC13047), Pseudomonas aeruginosa (RCMB008001), Escherichia coli (RCMB004001), and Gram-positive Staphylococcus aureus (ATCC 25923), bacteria using the agar-well diffusion method. Results revealed that, out of the three examined plant extracts, the methanol extract of H. sabdariffa L. was the most effective against all tested bacteria. The highest growth inhibition (39.6 ± 0.20 mm) was recorded against E. coli. Additionally, the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) of the methanol extract of H. sabdariffa were detected in the case of all tested bacteria. Moreover, an antibiotic susceptibility test revealed that all tested bacteria showed multidrug resistance (MDR). While 50% of tested bacteria were sensitive and 50% were intermediately sensitive to piperacillin/tazobactam (TZP) based on the inhibition zone but still less than the extract. Synergistic assay demonstrated the promising role of using a combination of H. sabdariffa L. and (TZP) against tested bacteria. A surface investigation using a scanning electron microscope of the E. coli treated with TZP, extract, or a combination of the two revealed extremely considerable bacterial cell death. In addition, H. sabdariffa L. has a promising anticancer role versus Caco-2 cells with IC50 of 17.51 ± 0.07 µg/mL and minimal cytotoxicity upon testing versus Vero cells with CC50 of 165.24 ± 0.89 µg/mL. Flow cytometric analysis confirmed that H. sabdariffa extract significantly increased the apoptotic rate of Caco-2-treated cells compared to the untreated group. Furthermore, GC-MS analysis confirmed the existence of various bioactive components in the methanol hibiscus extract. Utilizing molecular docking with the MOE-Dock tool, binding interactions between n-Hexadecanoic acid, hexadecanoic acid-methyl ester, and oleic acid, 3-hydroxypropyl ester were evaluated against the target crystal structures of E. coli (MenB) (PDB ID:3T88) and the structure of cyclophilin of a colon cancer cell line (PDB ID: 2HQ6). The observed results provide insight into how molecular modeling methods might inhibit the tested substances, which may have applications in the treatment of E. coli and colon cancer. Thus, H. sabdariffa methanol extract is a promising candidate to be further investigated for developing alternative natural therapies for infection treatment.
Collapse
Affiliation(s)
- Amira E Sehim
- Botany and Microbiology Department, Faculty of Science, Benha University, Benha 13518, Egypt
| | - Basma H Amin
- The Regional Center for Mycology and Biotechnology, Al-Azhar University, Cairo 11787, Egypt
| | - Mohammed Yosri
- The Regional Center for Mycology and Biotechnology, Al-Azhar University, Cairo 11787, Egypt
| | - Hanaa M Salama
- Department of Chemistry, Faculty of Science, Port Said University, Port Said 42521, Egypt
| | - Dalal Hussien Alkhalifah
- Department of Biology, Collage of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Maha Abdullah Alwaili
- Department of Biology, Collage of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Rasha Y Abd Elghaffar
- Botany and Microbiology Department, Faculty of Science, Benha University, Benha 13518, Egypt
| |
Collapse
|
4
|
Olanlokun JO, Oyebode OT, Popoola D, Bodede O, Idowu TO, Moodley R, Olorunsogo OO. In vitro effects of 2-methyl-3-propylbutane-1,4-diol purified from Alstonia boonei on erythrocyte membrane stabilization and mitochondrial membrane permeabilization. Chem Biol Drug Des 2023; 101:678-689. [PMID: 36323654 DOI: 10.1111/cbdd.14168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 10/15/2022] [Accepted: 10/29/2022] [Indexed: 11/05/2022]
Abstract
A recent review on the ethnomedicinal, chemical, pharmacological, and toxicological properties of Alstonia boonei revealed the plant's potential in the treatment and management of a range of diseases. However, most of these pharmacological effects are only traceable to the crude form of the plant extract and not specific natural products. Phytochemical investigation of the methanol fraction of the methanol extract of the stem-bark of Alstonia boonei led to the isolation and identification of 2-methyl-3-propylbutane-1,4-diol. The structures were elucidated by the application of 1D-, and 2D-NMR spectroscopic analyses and by comparison with literature data. In this study, the membrane stabilizing activity, mitochondrial membrane permeability transition pore opening, cytochrome c release, mitochondrial ATPase activity, and prevention of mitochondrial lipid peroxidation activity of 2-methyl-3-propylbutane-1,4-diol (MPBD) isolated from A. boonei were determined. The results showed that MPBD significantly (p < .05) prevented peroxidation of mitochondrial membrane lipids and hemolysis using both the heat-induced and hypotonic solution-induced membrane stabilization assays. On the contrary, the compound caused large amplitude swelling of rat liver mitochondria in the absence of calcium, significant (p < .05) cytochrome c release and enhancement of mitochondrial ATPase activity in vitro. Our findings suggest that MPBD showed characteristic biological properties useful in modulating cell death.
Collapse
Affiliation(s)
- John Oludele Olanlokun
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olubukola Titilope Oyebode
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - David Popoola
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olusola Bodede
- Natural Products Research Laboratory, School of Chemistry and Physics, University of Kwazulu-Natal, Durban, South Africa.,Department of Chemistry, University of Pretoria, Pretoria, South Africa
| | - Thomas Oyebode Idowu
- Department of Pharmaceutical Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Roshila Moodley
- Natural Products Research Laboratory, School of Chemistry and Physics, University of Kwazulu-Natal, Durban, South Africa
| | - Olufunso Olabode Olorunsogo
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| |
Collapse
|
5
|
Rahman MM, Tumpa MAA, Rahaman MS, Islam F, Sutradhar PR, Ahmed M, Alghamdi BS, Hafeez A, Alexiou A, Perveen A, Ashraf GM. Emerging Promise of Therapeutic Approaches Targeting Mitochondria in Neurodegenerative Disorders. Curr Neuropharmacol 2023; 21:1081-1099. [PMID: 36927428 PMCID: PMC10286587 DOI: 10.2174/1570159x21666230316150559] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 03/18/2023] Open
Abstract
Mitochondria are critical for homeostasis and metabolism in all cellular eukaryotes. Brain mitochondria are the primary source of fuel that supports many brain functions, including intracellular energy supply, cellular calcium regulation, regulation of limited cellular oxidative capacity, and control of cell death. Much evidence suggests that mitochondria play a central role in neurodegenerative disorders (NDDs) such as Parkinson's disease, Alzheimer's disease, Huntington's disease, and amyotrophic lateral sclerosis. Ongoing studies of NDDs have revealed that mitochondrial pathology is mainly found in inherited or irregular NDDs and is thought to be associated with the pathophysiological cycle of these disorders. Typical mitochondrial disturbances in NDDs include increased free radical production, decreased ATP synthesis, alterations in mitochondrial permeability, and mitochondrial DNA damage. The main objective of this review is to highlight the basic mitochondrial problems that occur in NDDs and discuss the use mitochondrial drugs, especially mitochondrial antioxidants, mitochondrial permeability transition blockade, and mitochondrial gene therapy, for the treatment and control of NDDs.
Collapse
Affiliation(s)
- Md. Mominur Rahman
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Mst. Afroza Alam Tumpa
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Md. Saidur Rahaman
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Fahadul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Popy Rani Sutradhar
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Muniruddin Ahmed
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Badrah S. Alghamdi
- Department of Physiology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- The Neuroscience Research Unit, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abdul Hafeez
- Glocal School of Pharmacy, Glocal University, Mirzapur Pole, Saharanpur, Uttar Pradesh, India
| | - Athanasios Alexiou
- Department of Science and Engineering, Novel Global Community Educational Foundation, Hebersham, Australia
- AFNP Med Austria, Wien, Austria
| | - Asma Perveen
- Glocal School of Life Sciences, Glocal University, Mirzapur Pole, Saharanpur, Uttar Pradesh, India
| | - Ghulam Md. Ashraf
- Department of Medical Laboratory Sciences, College of Health Sciences, and Sharjah Institute for Medical Research, University of Sharjah, Sharjah, 27272, United Arab Emirates
| |
Collapse
|
6
|
Almikhlafi MA, Karami MM, Jana A, Alqurashi TM, Majrashi M, Alghamdi BS, Ashraf GM. Mitochondrial Medicine: A Promising Therapeutic Option Against Various Neurodegenerative Disorders. Curr Neuropharmacol 2023; 21:1165-1183. [PMID: 36043795 PMCID: PMC10286591 DOI: 10.2174/1570159x20666220830112408] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/05/2022] [Accepted: 07/14/2022] [Indexed: 11/22/2022] Open
Abstract
Abnormal mitochondrial morphology and metabolic dysfunction have been observed in many neurodegenerative disorders (NDDs). Mitochondrial dysfunction can be caused by aberrant mitochondrial DNA, mutant nuclear proteins that interact with mitochondria directly or indirectly, or for unknown reasons. Since mitochondria play a significant role in neurodegeneration, mitochondriatargeted therapies represent a prosperous direction for the development of novel drug compounds that can be used to treat NDDs. This review gives a brief description of how mitochondrial abnormalities lead to various NDDs such as Alzheimer's disease, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis. We further explore the promising therapeutic effectiveness of mitochondria- directed antioxidants, MitoQ, MitoVitE, MitoPBN, and dimebon. We have also discussed the possibility of mitochondrial gene therapy as a therapeutic option for these NDDs.
Collapse
Affiliation(s)
- Mohannad A. Almikhlafi
- Department of Pharmacology and Toxicology, College of Pharmacy, Taibah University, Madinah, Saudi Arabia
| | - Mohammed M. Karami
- Department of Physiology, Neuroscience Unit, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ankit Jana
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT) Deemed to be University, Campus-11, Patia, Bhubaneswar, Odisha, 751024, India
| | - Thamer M. Alqurashi
- Department of Pharmacology, Faculty of Medicine, Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohammed Majrashi
- Department of Pharmacology, Faculty of Medicine, University of Jeddah, Jeddah, Saudi Arabia
| | - Badrah S. Alghamdi
- Department of Physiology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- The Neuroscience Research Unit, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ghulam Md. Ashraf
- Department of Medical Laboratory Sciences, College of Health Sciences, University of Sharjah, University City, Sharjah 27272, United Arab Emirates
| |
Collapse
|
7
|
Shindo M, Iwata T, Kano A, Shinohara Y. Synthesis and Conversion of Bongkrekic Acid and its Bioactivity. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.1136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mitsuru Shindo
- Institute for Materials Chemistry and Engineering, Kyushu University
| | - Takayuki Iwata
- Institute for Materials Chemistry and Engineering, Kyushu University
| | - Arihiro Kano
- Institute for Materials Chemistry and Engineering, Kyushu University
| | - Yasuo Shinohara
- Institute for Advanced Medical Sciences, Tokushima University
| |
Collapse
|
8
|
Hakiminia B, Alikiaii B, Khorvash F, Mousavi S. Oxidative stress and mitochondrial dysfunction following traumatic brain injury: From mechanistic view to targeted therapeutic opportunities. Fundam Clin Pharmacol 2022; 36:612-662. [PMID: 35118714 DOI: 10.1111/fcp.12767] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 01/15/2022] [Accepted: 02/02/2022] [Indexed: 02/07/2023]
Abstract
Traumatic brain injury (TBI) is one of the most prevalent causes of permanent physical and cognitive disabilities. TBI pathology results from primary insults and a multi-mechanistic biochemical process, termed as secondary brain injury. Currently, there are no pharmacological agents for definitive treatment of patients with TBI. This article is presented with the purpose of reviewing molecular mechanisms of TBI pathology, as well as potential strategies and agents against pathological pathways. In this review article, materials were obtained by searching PubMed, Scopus, Elsevier, Web of Science, and Google Scholar. This search was considered without time limitation. Evidence indicates that oxidative stress and mitochondrial dysfunction are two key mediators of the secondary injury cascade in TBI pathology. TBI-induced oxidative damage results in the structural and functional impairments of cellular and subcellular components, such as mitochondria. Impairments of mitochondrial electron transfer chain and mitochondrial membrane potential result in a vicious cycle of free radical formation and cell apoptosis. The results of some preclinical and clinical studies, evaluating mitochondria-targeted therapies, such as mitochondria-targeted antioxidants and compounds with pleiotropic effects after TBI, are promising. As a proposed strategy in recent years, mitochondria-targeted multipotential therapy is a new hope, waiting to be confirmed. Moreover, based on the available findings, biologics, such as stem cell-based therapy and transplantation of mitochondria are novel potential strategies for the treatment of TBI; however, more studies are needed to clearly confirm the safety and efficacy of these strategies.
Collapse
Affiliation(s)
- Bahareh Hakiminia
- Department of Clinical Pharmacy and Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Babak Alikiaii
- Department of Anesthesiology and Intensive Care, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fariborz Khorvash
- Department of Neurology, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sarah Mousavi
- Department of Clinical Pharmacy and Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
9
|
Yadav T, Gau D, Roy P. Mitochondria-actin cytoskeleton crosstalk in cell migration. J Cell Physiol 2022; 237:2387-2403. [PMID: 35342955 PMCID: PMC9945482 DOI: 10.1002/jcp.30729] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 03/06/2022] [Accepted: 03/11/2022] [Indexed: 12/15/2022]
Abstract
Mitochondria perform diverse functions in the cell and their roles during processes such as cell survival, differentiation, and migration are increasingly being appreciated. Mitochondrial and actin cytoskeletal networks not only interact with each other, but this multifaceted interaction shapes their functional dynamics. The interrelation between mitochondria and the actin cytoskeleton extends far beyond the requirement of mitochondrial ATP generation to power actin dynamics, and impinges upon several major aspects of cellular physiology. Being situated at the hub of cell signaling pathways, mitochondrial function can alter the activity of actin regulatory proteins and therefore modulate the processes downstream of actin dynamics such as cellular migration. As we will discuss, this regulation is highly nuanced and operates at multiple levels allowing mitochondria to occupy a strategic position in the regulation of migration, as well as pathological events that rely on aberrant cell motility such as cancer metastasis. In this review, we summarize the crosstalk that exists between mitochondria and actin regulatory proteins, and further emphasize on how this interaction holds importance in cell migration in normal as well as dysregulated scenarios as in cancer.
Collapse
Affiliation(s)
- Tarun Yadav
- Biology, Indian Institute of Science Education and Research, Pune
| | - David Gau
- Bioengineering, University of Pittsburgh, USA
| | - Partha Roy
- Bioengineering, University of Pittsburgh, USA,Pathology, University of Pittsburgh, USA
| |
Collapse
|
10
|
Boyenle ID, Oyedele AK, Ogunlana AT, Adeyemo AF, Oyelere FS, Akinola OB, Adelusi TI, Ehigie LO, Ehigie AF. Targeting the mitochondrial permeability transition pore for drug discovery: Challenges and opportunities. Mitochondrion 2022; 63:57-71. [PMID: 35077882 DOI: 10.1016/j.mito.2022.01.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/22/2021] [Accepted: 01/17/2022] [Indexed: 12/29/2022]
Abstract
Several drug targets have been amenable to drug discovery pursuit not until the characterization of the mitochondrial permeability transition pore (MPTP), a pore with an undefined molecular identity that forms on the inner mitochondrial membrane upon mitochondrial permeability transition (MPT) under the influence of calcium overload and oxidative stress. The opening of the pore which is presumed to cause cell death in certain human diseases also has implications under physiological parlance. Different models for this pore have been postulated following its first identification in the last six decades. The mitochondrial community has witnessed many protein candidates such as; voltage-dependent anion channel (VDAC), adenine nucleotide translocase (ANT), Mitochondrial phosphate carrier (PiC), Spastic Paralegin (SPG7), disordered proteins, and F1Fo ATPase. However, genetic studies have cast out most of these candidates with only F1Fo ATPase currently under intense argument. Cyclophilin D (CyPD) remains the widely accepted positive regulator of the MPTP known to date, but no drug candidate has emerged as its inhibitor, raising concern issues for therapeutics. Thus, in this review, we discuss various models of MPTP reported with the hope of stimulating further research in this field. We went beyond the classical description of the MPTP to ascribe a 'two-edged sword property' to the pore for therapeutic function in human disease because its inhibition and activation have pharmacological relevance. We suggested putative proteins upstream to CyPD that can regulate its activity and prevent cell deaths in neurodegenerative disease and ischemia-reperfusion injury.
Collapse
Affiliation(s)
- Ibrahim Damilare Boyenle
- Membrane Biochemistry and Biophysics Research Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria; Computational Biology/Drug Discovery Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Abdulquddus Kehinde Oyedele
- Computational Biology/Drug Discovery Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Abdeen Tunde Ogunlana
- Computational Biology/Drug Discovery Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Aishat Folashade Adeyemo
- Membrane Biochemistry and Biophysics Research Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | | | - Olateju Balikis Akinola
- Membrane Biochemistry and Biophysics Research Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Temitope Isaac Adelusi
- Computational Biology/Drug Discovery Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Leonard Ona Ehigie
- Computational Biology/Drug Discovery Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Adeola Folasade Ehigie
- Membrane Biochemistry and Biophysics Research Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
| |
Collapse
|
11
|
Kuang L, Zhu Y, Wu Y, Peng X, Tian K, Liu L, Li T. Synergetic Effect of 4-Phenylbutyric Acid in Combination with Cyclosporine A on Cardiovascular Function in Sepsis Rats via Inhibition of Endoplasmic Reticulum Stress and Mitochondrial Permeability Transition Pore Opening. Front Pharmacol 2021; 12:770558. [PMID: 34916944 PMCID: PMC8670008 DOI: 10.3389/fphar.2021.770558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 11/01/2021] [Indexed: 12/03/2022] Open
Abstract
Background: Sepsis/septic shock is a common complication in the intensive care unit, and the opening of the mitochondrial permeability transition pore (mPTP), as well as the endoplasmic reticulum stress (ERS), play important roles in this situation. Whether the combination of anti-ERS and anti-mPTP by 4-phenylbutyric acid (PBA) and Cyclosporine A (CsA) could benefit sepsis is unclear. Methods: The cecal ligation and puncture-induced septic shock models were replicated in rats, and lipopolysaccharide (LPS)-challenged primary vascular smooth muscle cells and H9C2 cardiomyocytes in vitro models were also used. The therapeutic effects of CsA, PBA, and combined administration on oxygen delivery, cardiac and vascular function, vital organ injury, and the underlying mechanisms were observed. Results: Septic shock significantly induced cardiovascular dysfunction, hypoperfusion, and organ injury and resulted in high mortality in rats. Conventional treatment including fluid resuscitation, vasoactive agents, and antibiotics slightly restored tissue perfusion and organ function in septic rats. Supplementation of CsA or PBA improved the tissue perfusion, organ function, and survival of septic shock rats. The combined application of PBA and CsA could significantly enhance the beneficial effects, compared with using PBA or CsA alone. Further study showed that PBA enhanced CsA-induced cardiovascular protection, which contributed to better therapeutic effects. Conclusion: Anti-ERS and anti-mPTP-opening by the combination of PBA and CsA was beneficial to septic shock. PBA enforced the CsA-associated cardiovascular protection and contributed to the synergetic effect.
Collapse
Affiliation(s)
- Lei Kuang
- Department of Shock and Transfusion, State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yu Zhu
- Department of Shock and Transfusion, State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yue Wu
- Department of Shock and Transfusion, State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaoyong Peng
- Department of Shock and Transfusion, State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Kunlun Tian
- Department of Shock and Transfusion, State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Liangming Liu
- Department of Shock and Transfusion, State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Tao Li
- Department of Shock and Transfusion, State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| |
Collapse
|
12
|
Zheng Y, Wang Z, Li Z, Liu H, Wei J, Peng C, Zhou Y, Li J, Fu Q, Tan H, Ding M. Ordered Conformation‐Regulated Vesicular Membrane Permeability. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yi Zheng
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Zuojie Wang
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Zifen Li
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Hang Liu
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Jing Wei
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Chuan Peng
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Yeqiang Zhou
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Jianshu Li
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Qiang Fu
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Hong Tan
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Mingming Ding
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| |
Collapse
|
13
|
Montana V, Flint D, Waagepetersen HS, Schousboe A, Parpura V. Two Metabolic Fuels, Glucose and Lactate, Differentially Modulate Exocytotic Glutamate Release from Cultured Astrocytes. Neurochem Res 2021; 46:2551-2579. [PMID: 34057673 PMCID: PMC9015689 DOI: 10.1007/s11064-021-03340-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/06/2021] [Accepted: 05/10/2021] [Indexed: 12/26/2022]
Abstract
Astrocytes have a prominent role in metabolic homeostasis of the brain and can signal to adjacent neurons by releasing glutamate via a process of regulated exocytosis. Astrocytes synthesize glutamate de novo owing to the pyruvate entry to the citric/tricarboxylic acid cycle via pyruvate carboxylase, an astrocyte specific enzyme. Pyruvate can be sourced from two metabolic fuels, glucose and lactate. Thus, we investigated the role of these energy/carbon sources in exocytotic glutamate release from astrocytes. Purified astrocyte cultures were acutely incubated (1 h) in glucose and/or lactate-containing media. Astrocytes were mechanically stimulated, a procedure known to increase intracellular Ca2+ levels and cause exocytotic glutamate release, the dynamics of which were monitored using single cell fluorescence microscopy. Our data indicate that glucose, either taken-up from the extracellular space or mobilized from the intracellular glycogen storage, sustained glutamate release, while the availability of lactate significantly reduced the release of glutamate from astrocytes. Based on further pharmacological manipulation during imaging along with tandem mass spectrometry (proteomics) analysis, lactate alone, but not in the hybrid fuel, caused metabolic changes consistent with an increased synthesis of fatty acids. Proteomics analysis further unveiled complex changes in protein profiles, which were condition-dependent and generally included changes in levels of cytoskeletal proteins, proteins of secretory organelle/vesicle traffic and recycling at the plasma membrane in aglycemic, lactate or hybrid-fueled astrocytes. These findings support the notion that the availability of energy sources and metabolic milieu play a significant role in gliotransmission.
Collapse
Affiliation(s)
- Vedrana Montana
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
| | - Daniel Flint
- Luxumbra Strategic Research, LLC, Arlington, VA, USA
| | - Helle S Waagepetersen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Arne Schousboe
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Vladimir Parpura
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
| |
Collapse
|
14
|
Zheng Y, Wang Z, Li Z, Liu H, Wei J, Peng C, Zhou Y, Li J, Fu Q, Tan H, Ding M. Ordered Conformation-Regulated Vesicular Membrane Permeability. Angew Chem Int Ed Engl 2021; 60:22529-22536. [PMID: 34390299 DOI: 10.1002/anie.202109637] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Indexed: 11/07/2022]
Abstract
In nature, the folding and conformation of proteins can control the cell or organelle membrane permeability and regulate the life activities. Here we report the first example of synthetic polypeptide vesicles that regulate their permeability via ordered transition of secondary conformations, in a manner similar to biological systems. The polymersomes undergo a β-sheet to α-helix transition in response to reactive oxygen species (ROS), leading to wall thinning without loss of vesicular integrity. The change of membrane structure increases the vesicular permeability and enables specific transport of payloads with different molecular weights.The change of membrane structure increases the vesicular permeability. As a proof-of-concept, the polymersomes encapsulating enzymes could serve as nanoreactors and carries for glucose-stimulated insulin secretion in vivo inspired by human glucokinase, resulting in safe and effective treatment of type 1 diabetes mellitus in mouse models. This study will help understand the biology of biomembranes and facilitate the engineering of nanoplatforms for biomimicry, biosensing, and controlled delivery applications.
Collapse
Affiliation(s)
- Yi Zheng
- Sichuan University, College of Polymer Science and Engineering, 5805, CHINA
| | - Zuojie Wang
- Sichuan University, College of Polymer Science and Engineering, CHINA
| | - Zifen Li
- Sichuan University, College of Polymer Science and Engineering, CHINA
| | - Hang Liu
- Sichuan University, College of Polymer Science and Engineering, CHINA
| | - Jing Wei
- Sichuan University, College of Polymer Science and Engineering, CHINA
| | - Chuan Peng
- Sichuan University, College of Polymer Science and Engineering, CHINA
| | - Yeqiang Zhou
- Sichuan University, College of Polymer Science and Engineering, CHINA
| | - Jianshu Li
- Sichuan University, College of Polymer Science and Engineering, CHINA
| | - Qiang Fu
- Sichuan University, College of Polymer Science and Engineering, CHINA
| | - Hong Tan
- Sichuan University, College of Polymer Science and Engineering, CHINA
| | - Mingming Ding
- Sichuan University, College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, 610065, Chengdu, CHINA
| |
Collapse
|
15
|
Arora A, Behl T, Sehgal A, Singh S, Sharma N, Mathew B, Bungau S. Targeting cellular batteries for the therapy of neurological diseases. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:41517-41532. [PMID: 34080116 DOI: 10.1007/s11356-021-14665-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 05/27/2021] [Indexed: 06/12/2023]
Abstract
The mitochondria, apart from being known as the cell's "powerhouse," are crucial in the viability of nerve cells. Any damage to these cellular organelles can result in their cellular level dysfunction which includes rapidly multiplying reactive oxygen species (ROS) from the mitochondrial membrane, impaired calcium ion homeostasis, and disturbed mitochondrial dynamics by the formation of permeability transition pore in mitochondria. All these impaired biochemical changes lead to various neurological disorders such as progressive supranuclear palsy (PSP), Parkinson's disease (PD), and Alzheimer's disease (AD). Moreover, impaired mitochondrial functions are particularly prone to damage owing to prolonged lifespan and stretched length of the neurons. At the same time, neurons are highly dependent on ATP, and thus, the mitochondria play a central role in the pathogenesis pertaining to neuronal disorders. Dysfunction in the mitochondria is an early pathological hallmark of neurological disorders, and its early detection with the help of suitable biomarkers can lead to promising treatment in this area. Thus, the drugs which are targeting mitochondrial dysfunctions are the emerging area of research in connection with neurological disorders. This can be evidenced by the great opportunities for mitigation, diagnosis, and treatment of numerous human disorders that entail mitochondrial dysfunction at the nexus of their pathogenesis. Here, we throw light at the mitochondrial pathologies and indications of dysfunctional mitochondria in PD, AD, and PSP. There is also an insight into the possible therapeutic strategies highlighting the need for mitochondria-based medicine and made an attempt for claiming the prerequisite for the therapy of neurological diseases.
Collapse
Affiliation(s)
- Arpita Arora
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | - Aayush Sehgal
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Bijo Mathew
- Department of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Science Campus, Kochi, India
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
| |
Collapse
|
16
|
The Regulation of Non-Specific Membrane Permeability Transition in Yeast Mitochondria under Oxidative Stress. MICROBIOLOGY RESEARCH 2021. [DOI: 10.3390/microbiolres12020029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, the mechanism of non-specific membrane permeability (yPTP) in the Endomyces magnusii yeast mitochondria under oxidative stress due to blocking the key antioxidant enzymes has been investigated. We used monitoring the membrane potential at the cellular (potential-dependent staining) and mitochondrial levels and mitochondria ultra-structural images with transmission electron microscopy (TEM) to demonstrate the mitochondrial permeability transition induction due to the pore opening. Analysis of the yPTP opening upon respiring different substrates showed that NAD(P)H completely blocked the development of the yPTP. The yPTP opening was inhibited by 5–20 mM Pi, 5 mM Mg2+, adenine nucleotides (AN), 5 mM GSH, the inhibitor of the Pi transporter (PiC), 100 μM mersalyl, the blockers of the adenine nucleotide transporter (ANT) carboxyatractyloside (CATR), and bongkrekic acid (BA). We concluded that the non-specific membrane permeability pore opens in the E. magnusii mitochondria under oxidative stress, and the ANT and PiC are involved in its formation. The crucial role of the Ca2+ ions in the process has not been confirmed. We showed that the Ca2+ ions affected the yPTP both with and without the Ca2+ ionophore ETH129 application insignificantly. This phenomenon in the E. magnusii yeast unites both mitochondrial unselective channel (ScMUC) features in the Saccharomyces cerevisiae mitochondria and the classical membrane pore in the mammalian ones (mPTP).
Collapse
|
17
|
A Walk in the Memory, from the First Functional Approach up to Its Regulatory Role of Mitochondrial Bioenergetic Flow in Health and Disease: Focus on the Adenine Nucleotide Translocator. Int J Mol Sci 2021; 22:ijms22084164. [PMID: 33920595 PMCID: PMC8073645 DOI: 10.3390/ijms22084164] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 04/11/2021] [Accepted: 04/16/2021] [Indexed: 12/19/2022] Open
Abstract
The mitochondrial adenine nucleotide translocator (ANT) plays the fundamental role of gatekeeper of cellular energy flow, carrying out the reversible exchange of ADP for ATP across the inner mitochondrial membrane. ADP enters the mitochondria where, through the oxidative phosphorylation process, it is the substrate of Fo-F1 ATP synthase, producing ATP that is dispatched from the mitochondrion to the cytoplasm of the host cell, where it can be used as energy currency for the metabolic needs of the cell that require energy. Long ago, we performed a method that allowed us to monitor the activity of ANT by continuously detecting the ATP gradually produced inside the mitochondria and exported in the extramitochondrial phase in exchange with externally added ADP, under conditions quite close to a physiological state, i.e., when oxidative phosphorylation takes place. More than 30 years after the development of the method, here we aim to put the spotlight on it and to emphasize its versatile applicability in the most varied pathophysiological conditions, reviewing all the studies, in which we were able to observe what really happened in the cell thanks to the use of the "ATP detecting system" allowing the functional activity of the ANT-mediated ADP/ATP exchange to be measured.
Collapse
|
18
|
Jin X, Guo JL, Wang L, Zhong X, Yao WF, Gao H, Liu MY. Natural products as pharmacological modulators of mitochondrial dysfunctions for the treatments of Alzheimer's disease: A comprehensive review. Eur J Med Chem 2021; 218:113401. [PMID: 33831779 DOI: 10.1016/j.ejmech.2021.113401] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 10/21/2022]
Abstract
Alzheimer's disease (AD) is the most common progressive neurodegenerative disorder characterized by neuronal loss and cognitive impairment that harshly affect the elderly individuals. Currently, the available anti-AD pharmacological approaches are purely symptomatic to alleviate AD symptoms, and the curative effects of novel anti-AD drugs focused on Aβ target are disappointing. Hence, there is a tremendous need to adjust AD therapeutic targets and discover novel anti-AD agents. In AD, mitochondrial dysfunction gradually triggers neuronal death from different aspects and worsens the occurrence and progress of AD. Consequently, it has been proposed that the intervention of impaired mitochondria represents an attractive breakthrough point for AD treatments. Due to chemical diversity, poly-pharmacological activities, few adverse effects and multiple targeting, natural products (NPs) have been identified as a valuable treasure for drug discovery and development. Multiple lines of studies have scientifically proven that NPs display ameliorative benefits in AD treatment in relation to mitochondrial dysfunction. This review surveys the complicated implications for mitochondrial dysregulation and AD, and then summarizes the potentials of NPs and their underlying molecular mechanisms against AD via reducing or improving mitochondrial dysfunction. It is expected that this work may open the window to speed up the development of innovative anti-AD drugs originated from NPs and improve upcoming AD therapeutics.
Collapse
Affiliation(s)
- Xin Jin
- Department of Pharmacognosy, School of Pharmacy, China Medical University, Shenyang, China
| | - Jia-Ling Guo
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Lin Wang
- Department of Pharmacy, School of Pharmacy, China Medical University, Shenyang, China
| | - Xin Zhong
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Wei-Fan Yao
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Hua Gao
- Division of Pharmacology Laboratory, National Institutes for Food and Drug Control, Beijing, China
| | - Ming-Yan Liu
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China.
| |
Collapse
|
19
|
Hassan Adel SM, Sheikhi MA, Dorra M. An investigation of the effectiveness of oral cyclosporine on perioperative myocardial injury (PMI) in patients who undergo the surgical procedure of coronary artery bypass graft (CABG): A Randomized Controlled Clinical Trial. J Family Med Prim Care 2021; 10:675-680. [PMID: 34041060 PMCID: PMC8138422 DOI: 10.4103/jfmpc.jfmpc_1598_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/29/2020] [Accepted: 12/26/2020] [Indexed: 11/24/2022] Open
Abstract
Background: Routine clinical strategies for the prevention of myocardial infarction (MI) during the surgical procedure of CABG include cross-clamp fibrillation and cardioplegia have failed to decrease the risk of perioperative myocardial injury (PMI). Cyclosporine-A (CsA) might be able to prevent mitochondrial dysfunction and PMI. Methods: In the present clinical trial, patients were divided into two groups (Case receive 2.5 mg/kg CsA and Control receive a placebo) randomly. Moreover, patients were controlled by placebo through a double-blind, single-center trial 4-12 h before anesthesia. Perioperative blood tests include bilirubin, complete blood count, the amount of hemoglobin in whole blood, liver transaminases, and glomerular filtration rate (GFR). Blood samples were taken before surgery and at 24, 48, and 72 h after surgery and serum Troponin-I and CK-MB levels were determined in all blood samples using ELISA. Results: There were no significant differences between the two groups in the results of routine pre-operative blood results, intraoperative variables, and baseline characteristics (P > 0.05). There are significant correlations between cross clamp time and cTnI and CKMB levels in patients taking CsA. In patients with both diabetes and hypertension, postsurgical cTnI and CKMB levels decrease significantly in CsA compared to placebo group on 24, 48, and 72 h (P < 0.05). Moreover, patients with old MI, both postsurgical cTnI and CKMB levels decrease significantly in CsA compared to placebo group on 24 h and 48 h (P < 0.05). Conclusions: In patients with a long cross-clamping period, using an oral CSA single dose before conducting CABG surgery, the risk of PMI could be decreased. Also, oral CsA has protective effect for CABG in diabetic patients with hypertension.
Collapse
Affiliation(s)
| | - Mohammad Ali Sheikhi
- Department of Cardiac Surgery, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Marziyeh Dorra
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| |
Collapse
|
20
|
Mansuri ML, Sharma G, Parihar P, Dube KT, Sharma T, Parihar A, Parihar MS. Increased oxidative stress and mitochondrial impairments associated with increased expression of TNF-α and caspase-3 in palmitic acid-induced lipotoxicity in myoblasts. J Biochem Mol Toxicol 2021; 35:e22744. [PMID: 33604948 DOI: 10.1002/jbt.22744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 12/30/2020] [Accepted: 02/10/2021] [Indexed: 11/07/2022]
Abstract
Saturated fatty acids, whose circulating levels are markedly increased in the body, significantly affect the growth and functions of skeletal muscle. These fatty acids may exert a detrimental effect on the undifferentiated skeletal myoblasts that may adversely affect their differentiation. In the present study, the exposure of myoblasts to excess palmitic acid caused an elevation of tumor necrosis factor-α expression and an increase in reactive oxygen species levels consistent with the enhanced inflammation and oxidative stress. Various concentrations of palmitic acid significantly decreased the mitochondrial membrane potential, induced the programmed cell death by an increase in the caspase-3 expression, and DNA fragmentation in the myoblasts. These findings suggest that the increased concentrations of saturated fatty acid in the myoblasts increase lipotoxicity by increasing inflammation and oxidative stress, decreasing the mitochondrial function, and inducing apoptosis.
Collapse
Affiliation(s)
- Mohammad Lukman Mansuri
- School of Studies in Zoology & Biotechnology, Vikram University, Ujjain, Madhya Pradesh, India
| | - Garima Sharma
- School of Studies in Zoology & Biotechnology, Vikram University, Ujjain, Madhya Pradesh, India
| | - Priyanka Parihar
- School of Studies in Zoology & Biotechnology, Vikram University, Ujjain, Madhya Pradesh, India
| | - Kirti Tiwari Dube
- Department of Zoology, Government Holkar Science College, Indore, Madhya Pradesh, India
| | - Tejasweta Sharma
- School of Studies in Zoology & Biotechnology, Vikram University, Ujjain, Madhya Pradesh, India
| | | | - Mordhwaj Singh Parihar
- School of Studies in Zoology & Biotechnology, Vikram University, Ujjain, Madhya Pradesh, India.,Bioexons LLC, Seattle, Washington, USA
| |
Collapse
|
21
|
Colella M, Cuomo D, Peluso T, Falanga I, Mallardo M, De Felice M, Ambrosino C. Ovarian Aging: Role of Pituitary-Ovarian Axis Hormones and ncRNAs in Regulating Ovarian Mitochondrial Activity. Front Endocrinol (Lausanne) 2021; 12:791071. [PMID: 34975760 PMCID: PMC8716494 DOI: 10.3389/fendo.2021.791071] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 11/29/2021] [Indexed: 12/17/2022] Open
Abstract
The number of mitochondria in the oocyte along with their functions (e.g., energy production, scavenger activity) decline with age progression. Such multifaceted functions support several processes during oocyte maturation, ranging from energy supply to synthesis of the steroid hormones. Hence, it is hardly surprising that their impairment has been reported in both physiological and premature ovarian aging, wherein they are crucial players in the apoptotic processes that arise in aged ovaries. In any form, ovarian aging implies the progressive damage of the mitochondrial structure and activities as regards to ovarian germ and somatic cells. The imbalance in the circulating hormones and peptides (e.g., gonadotropins, estrogens, AMH, activins, and inhibins), active along the pituitary-ovarian axis, represents the biochemical sign of ovarian aging. Despite the progress accomplished in determining the key role of the mitochondria in preserving ovarian follicular number and health, their modulation by the hormonal signalling pathways involved in ovarian aging has been poorly and randomly explored. Yet characterizing this mechanism is pivotal to molecularly define the implication of mitochondrial dysfunction in physiological and premature ovarian aging, respectively. However, it is fairly difficult considering that the pathways associated with ovarian aging might affect mitochondria directly or by altering the activity, stability and localization of proteins controlling mitochondrial dynamics and functions, either unbalancing other cellular mediators, released by the mitochondria, such as non-coding RNAs (ncRNAs). We will focus on the mitochondrial ncRNAs (i.e., mitomiRs and mtlncRNAs), that retranslocate from the mitochondria to the nucleus, as active players in aging and describe their role in the nuclear-mitochondrial crosstalk and its modulation by the pituitary-ovarian hormone dependent pathways. In this review, we will illustrate mitochondria as targets of the signaling pathways dependent on hormones and peptides active along the pituitary/ovarian axis and as transducers, with a particular focus on the molecules retrieved in the mitochondria, mainly ncRNAs. Given their regulatory function in cellular activities we propose them as potential diagnostic markers and/or therapeutic targets.
Collapse
Affiliation(s)
- Marco Colella
- Biogem, Istituto di Biologia e Genetica Molecolare, Ariano Irpino, Italy
- Department of Science and Technology, University of Sannio, Benevento, Italy
- Laboratory of Pre-Clinical and Translational Research, IRCCS, Referral Cancer Center of Basilicata, Rionero in Vulture, Italy
| | - Danila Cuomo
- Department of Molecular and Cellular Medicine, College of Medicine, Texas A&M University, College Station, TX, United States
| | - Teresa Peluso
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Ilaria Falanga
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Massimo Mallardo
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples “Federico II”, Naples, Italy
| | - Mario De Felice
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples “Federico II”, Naples, Italy
- Istituto per l’ endocrinologia e l’oncologia “Gaetano Salvatore” (IEOS)-Centro Nazionale delle Ricerche (CNR), Naples, Italy
| | - Concetta Ambrosino
- Biogem, Istituto di Biologia e Genetica Molecolare, Ariano Irpino, Italy
- Department of Science and Technology, University of Sannio, Benevento, Italy
- Istituto per l’ endocrinologia e l’oncologia “Gaetano Salvatore” (IEOS)-Centro Nazionale delle Ricerche (CNR), Naples, Italy
- *Correspondence: Concetta Ambrosino,
| |
Collapse
|
22
|
Shimada K, Matsui I, Inoue K, Matsumoto A, Yasuda S, Katsuma Y, Sakaguchi Y, Tanaka M, Sugimoto K, Kaimori JY, Takabatake Y, Isaka Y. Dietary casein, egg albumin, and branched-chain amino acids attenuate phosphate-induced renal tubulointerstitial injury in rats. Sci Rep 2020; 10:19038. [PMID: 33149246 PMCID: PMC7643071 DOI: 10.1038/s41598-020-76228-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 10/26/2020] [Indexed: 01/24/2023] Open
Abstract
Dietary phosphate intake is closely correlated with protein intake. However, the effects of the latter on phosphate-induced organ injuries remain uncertain. Herein, we investigated the effects of low (10.8%), moderate (23.0%), and high (35.2%) dietary casein and egg albumin administration on phosphate-induced organ injuries in rats. The moderate and high casein levels suppressed renal tubulointerstitial fibrosis and maintained mitochondrial integrity in the kidney. The serum creatinine levels were suppressed only in the high casein group. Phosphate-induced muscle weakness was also ameliorated by high dietary casein. The urinary and fecal phosphate levels in the early experiment stage showed that dietary casein did not affect phosphate absorption from the intestine. High dietary egg albumin showed similar kidney protective effects, while the egg albumin effects on muscle weakness were only marginally significant. As the plasma branched-chain amino acid levels were elevated in casein- and egg albumin-fed rats, we analyzed their effects. Dietary supplementation of 10% branched-chain amino acids suppressed phosphate-induced kidney injury and muscle weakness. Although dietary protein restriction is recommended in cases of chronic kidney disease, our findings indicate that the dietary casein, egg albumin, and branched-chain amino acid effects might be reconsidered in the era of a phosphate-enriched diet.
Collapse
Affiliation(s)
- Karin Shimada
- Department of Nephrology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Isao Matsui
- Department of Nephrology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Kazunori Inoue
- Department of Nephrology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Ayumi Matsumoto
- Department of Nephrology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Seiichi Yasuda
- Department of Nephrology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yusuke Katsuma
- Department of Nephrology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yusuke Sakaguchi
- Department of Inter-organ Communication Research in Kidney Disease, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Minoru Tanaka
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan.,Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, 7-10-2 Tomoga-oka, Suma, Kobe, Hyogo, 654-0142, Japan.,Department of Rehabilitation Science, Osaka Health Science University, 1-9-27 Tenma, Kita-ku, Osaka, 530-0043, Japan
| | - Ken Sugimoto
- Department of Geriatric and General Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan
| | - Jun-Ya Kaimori
- Department of Inter-organ Communication Research in Kidney Disease, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshitsugu Takabatake
- Department of Nephrology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshitaka Isaka
- Department of Nephrology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
23
|
Chen D, Zhang T, Lee TH. Cellular Mechanisms of Melatonin: Insight from Neurodegenerative Diseases. Biomolecules 2020; 10:biom10081158. [PMID: 32784556 PMCID: PMC7464852 DOI: 10.3390/biom10081158] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/23/2020] [Accepted: 08/05/2020] [Indexed: 02/06/2023] Open
Abstract
Neurodegenerative diseases are the second most common cause of death and characterized by progressive impairments in movement or mental functioning in the central or peripheral nervous system. The prevention of neurodegenerative disorders has become an emerging public health challenge for our society. Melatonin, a pineal hormone, has various physiological functions in the brain, including regulating circadian rhythms, clearing free radicals, inhibiting biomolecular oxidation, and suppressing neuroinflammation. Cumulative evidence indicates that melatonin has a wide range of neuroprotective roles by regulating pathophysiological mechanisms and signaling pathways. Moreover, melatonin levels are decreased in patients with neurodegenerative diseases. In this review, we summarize current knowledge on the regulation, molecular mechanisms and biological functions of melatonin in neurodegenerative diseases such as Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, amyotrophic lateral sclerosis, vascular dementia and multiple sclerosis. We also discuss the clinical application of melatonin in neurodegenerative disorders. This information will lead to a better understanding of the regulation of melatonin in the brain and provide therapeutic options for the treatment of various neurodegenerative diseases.
Collapse
Affiliation(s)
- Dongmei Chen
- Correspondence: (D.C.); (T.H.L.); Tel.: +86-591-2286-2498 (D.C.); +86-591-2286-2498 (T.H.L.)
| | | | - Tae Ho Lee
- Correspondence: (D.C.); (T.H.L.); Tel.: +86-591-2286-2498 (D.C.); +86-591-2286-2498 (T.H.L.)
| |
Collapse
|
24
|
Mitochondria focused neurotherapeutics for spinal cord injury. Exp Neurol 2020; 330:113332. [DOI: 10.1016/j.expneurol.2020.113332] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 04/21/2020] [Accepted: 04/26/2020] [Indexed: 02/06/2023]
|
25
|
Genistein potentiates Centchroman induced antineoplasticity in breast cancer via PI3K/Akt deactivation and ROS dependent induction of apoptosis. Life Sci 2019; 239:117073. [PMID: 31751581 DOI: 10.1016/j.lfs.2019.117073] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/28/2019] [Accepted: 11/14/2019] [Indexed: 12/30/2022]
Abstract
AIMS Recently, strategies of cancer treatment using combination of agents with distinct molecular mechanism(s) of action are considered more promising due to its high efficacy and reduced systemic toxicity. The study is aimed to improve the efficacy of selective estrogen receptor modulator, Centchroman (CC) by combination with the phytoestrogen Genistein (GN). METHODS Cytotoxicity was evaluated by Sulforhodamine B assay. Cell cycle analysis was done through flow cytometry. Further, Apoptosis was analyzed using Annexin V/PI staining, tunel assay and electron microscopic examination and verified using western blot analysis. In order to validate the in vitro results, in vivo analysis was performed using 4T1-syngeneic mouse model. KEY FINDINGS In this study, we report that the dietary isoflavone genistein (GN) synergistically improved antineoplasticity of CC in breast cancer by arresting cells at G2/M phase culminating in ROS dependent apoptosis. The combination of CC plus GN caused dysregulation of Bax and Bcl-2 ratio inducing mitochondrial dysfunction, activation of Caspase-3/7, -9 and PARP cleavage. Further, combination significantly suppresses phosphorylation of PI3K/Akt/NF-κB, enhancing apoptosis. Additionally, combination markedly reduced tumor growth compared to CC and GN alone in mouse 4T1 breast tumor model. SIGNIFICANCE Together, these studies suggest that GN represents a potential adjunct molecule whose role in CC induced apoptosis deserves attention.
Collapse
|
26
|
Martinis P, Grancara S, Kanamori Y, García-Argáez AN, Pacella E, Dalla Via L, Toninello A, Agostinelli E. Involvement of the biogenic active amine agmatine in mitochondrial membrane permeabilization and release of pro-apoptotic factors. Amino Acids 2019; 52:161-169. [DOI: 10.1007/s00726-019-02791-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 09/30/2019] [Indexed: 10/25/2022]
|
27
|
Shah SS, Lannon H, Dias L, Zhang JY, Alper SL, Pollak MR, Friedman DJ. APOL1 Kidney Risk Variants Induce Cell Death via Mitochondrial Translocation and Opening of the Mitochondrial Permeability Transition Pore. J Am Soc Nephrol 2019; 30:2355-2368. [PMID: 31558683 DOI: 10.1681/asn.2019020114] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 08/15/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Genetic Variants in Apolipoprotein L1 (APOL1) are associated with large increases in CKD rates among African Americans. Experiments in cell and mouse models suggest that these risk-related polymorphisms are toxic gain-of-function variants that cause kidney dysfunction, following a recessive mode of inheritance. Recent data in trypanosomes and in human cells indicate that such variants may cause toxicity through their effects on mitochondria. METHODS To examine the molecular mechanisms underlying APOL1 risk variant-induced mitochondrial dysfunction, we generated tetracycline-inducible HEK293 T-REx cells stably expressing the APOL1 nonrisk G0 variant or APOL1 risk variants. Using these cells, we mapped the molecular pathway from mitochondrial import of APOL1 protein to APOL1-induced cell death with small interfering RNA knockdowns, pharmacologic inhibitors, blue native PAGE, mass spectrometry, and assessment of mitochondrial permeability transition pore function. RESULTS We found that the APOL1 G0 and risk variant proteins shared the same import pathway into the mitochondrial matrix. Once inside, G0 remained monomeric, whereas risk variant proteins were prone to forming higher-order oligomers. Both nonrisk G0 and risk variant proteins bound components of the mitochondrial permeability transition pore, but only risk variant proteins activated pore opening. Blocking mitochondrial import of APOL1 risk variants largely eliminated oligomer formation and also rescued toxicity. CONCLUSIONS Our study illuminates important differences in the molecular behavior of APOL1 nonrisk and risk variants, and our observations suggest a mechanism that may explain the very different functional effects of these variants, despite the lack of consistently observed differences in trafficking patterns, intracellular localization, or binding partners. Variant-dependent differences in oligomerization pattern may underlie APOL1's recessive, gain-of-function biology.
Collapse
Affiliation(s)
- Shrijal S Shah
- Renal Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Herbert Lannon
- Renal Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Leny Dias
- Renal Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Jia-Yue Zhang
- Renal Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Seth L Alper
- Renal Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Martin R Pollak
- Renal Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - David J Friedman
- Renal Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
28
|
Carraro M, Checchetto V, Szabó I, Bernardi P. F‐ATPsynthase and the permeability transition pore: fewer doubts, more certainties. FEBS Lett 2019; 593:1542-1553. [DOI: 10.1002/1873-3468.13485] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 06/09/2019] [Accepted: 06/10/2019] [Indexed: 12/27/2022]
Affiliation(s)
- Michela Carraro
- Department of Biomedical Sciences University of Padova Italy
| | | | - Ildikó Szabó
- Department of Biology University of Padova Italy
| | - Paolo Bernardi
- Department of Biomedical Sciences University of Padova Italy
| |
Collapse
|
29
|
Abal P, Louzao MC, Vilariño N, Vieytes MR, Botana LM. Acute Toxicity Assessment: Macroscopic and Ultrastructural Effects in Mice Treated with Oral Tetrodotoxin. Toxins (Basel) 2019; 11:E305. [PMID: 31146400 PMCID: PMC6628385 DOI: 10.3390/toxins11060305] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/24/2019] [Accepted: 05/25/2019] [Indexed: 01/30/2023] Open
Abstract
Tetrodotoxin (TTX) is an extremely toxic marine compound produced by different genera of bacteria that can reach humans through ingestion mainly of pufferfish but also of other contaminated fish species, marine gastropods or bivalves. TTX blocks voltage-gated sodium channels inhibiting neurotransmission, which in severe cases triggers cardiorespiratory failure. Although TTX has been responsible for many human intoxications limited toxicological data are available. The recent expansion of TTX from Asian to European waters and diversification of TTX-bearing organisms entail an emerging risk of food poisoning. This study is focused on the acute toxicity assessment of TTX administered to mice by oral gavage following macroscopic and microscopic studies. Necropsy revealed that TTX induced stomach swelling 2 h after administration, even though no ultrastructural alterations were further detected. However, transmission electron microscopy images showed an increase of lipid droplets in hepatocytes, swollen mitochondria in spleens, and alterations of rough endoplasmic reticulum in intestines as hallmarks of the cellular damage. These findings suggested that gastrointestinal effects should be considered when evaluating human TTX poisoning.
Collapse
Affiliation(s)
- Paula Abal
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002 Lugo, Spain.
| | - M Carmen Louzao
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002 Lugo, Spain.
| | - Natalia Vilariño
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002 Lugo, Spain.
| | - Mercedes R Vieytes
- Departamento de Fisiología, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002 Lugo, Spain.
| | - Luis M Botana
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002 Lugo, Spain.
| |
Collapse
|
30
|
Mondal NK, Behera J, Kelly KE, George AK, Tyagi PK, Tyagi N. Tetrahydrocurcumin epigenetically mitigates mitochondrial dysfunction in brain vasculature during ischemic stroke. Neurochem Int 2018; 122:120-138. [PMID: 30472160 DOI: 10.1016/j.neuint.2018.11.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/07/2018] [Accepted: 11/20/2018] [Indexed: 12/17/2022]
Abstract
The objectives of this study are to identify the mechanism of mitochondrial dysfunction during cerebral ischemic/reperfusion (I/R) injury and the therapeutic potential of tetrahydrocurcumin (THC) to mitigate mitochondrial dysfunction in experimental stroke model. In our study, 8-10 weeks old male C57BL/6 wild-type mice were subjected to middle cerebral artery occlusion (MCAO) for 40 min, followed by reperfusion for 72 h. THC (25mg/kg-BW/day) was injected intraperitoneally once daily for 3 days after 4 h of ischemia. The experimental groups were: (i) sham, (ii) I/R and (iii) I/R + THC. We noticed that THC treatment in ischemic mice significantly improved the functional capacity and motor co-ordination along with reduced neuroscore, infarct volume, brain edema and microvascular leakage in brain parenchyma. The study revealed that level of total homocysteine (tHcy), homocysteine metabolizing enzymes, mitochondrial oxidative stress were significantly altered in I/R mice compared to sham. We also observed alteration in mitochondrial transition pore, ATP production and O2 consumption in the ischemic brain as compared to sham. Further, elevated matrix metalloproteinases-9 (MMP-9) activity and reduced tight junction protein expressions intensified the brain vascular impairment in I/R mice compared to sham. Interestingly, we found that levels of mitophagy markers, fusion and fission proteins were significantly altered. However THC treatment in I/R mice almost normalized the above functional and molecular changes. Mechanistic study demonstrated that DNA Methyltransferase 1 (DNMT1) expression was higher and was associated with reduced mitochondrial tissue inhibitor of metalloproteinases 2 (TIMP-2) expression through hyper-methylation of CpG island of TIMP-2 promoter in I/R mice compared to sham. However, administration of epigenetic inhibitor, 5-Azacytidine (5-Aza) abrogated I/R induced hyper-methylation of TIMP-2 promoter and maintaining the extracellular matrix (ECM) integrity. In conclusion, this study suggests that THC epigenetically ameliorates mitochondrial dysfunction in brain vasculature during Ischemic Stroke.
Collapse
Affiliation(s)
- Nandan K Mondal
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, 40202, USA; Department of Surgery, Baylor College of Medicine, Texas Heart Institute, Houston, TX, 77030, USA
| | - Jyotirmaya Behera
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Kimberly E Kelly
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Akash K George
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Pranav K Tyagi
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, 40202, USA
| | - Neetu Tyagi
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY, 40202, USA.
| |
Collapse
|
31
|
Xiang X, Gao T, Zhang BR, Jiang FL, Liu Y. Surface functional groups affect CdTe QDs behavior at mitochondrial level. Toxicol Res (Camb) 2018; 7:1071-1080. [PMID: 30542601 DOI: 10.1039/c8tx00160j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 08/21/2018] [Indexed: 12/15/2022] Open
Abstract
Quantum dots (QDs) are used in the bio-medical area because of their excellent optical properties. Their biomedical utilization has remained a serious biosecurity concern. Cytotoxicity experiments have shown that QD toxicity is connected to the properties of the QDs. In this paper, the toxicity of QDs was studied from the aspect of surface functional groups at the mitochondrial level. Three types of ligands, thioglycollic acid (TGA), mercaptoethylamine (MEA) and l-cysteine (l-Cys), which have similar structures but different functional groups were used to coat CdTe QDs. The effects of the three types of CdTe QDs on mitochondria were then observed. The experimental results showed the three types of CdTe QDs could impair mitochondrial respiration, destroy membrane potential and induce mitochondrial swelling. Interestingly, MEA-CdTe QDs showed similar effects on membrane potential and mitochondrial swelling as did l-Cys-CdTe QDs, while TGA-CdTe QDs showed stronger effects than that of the two other QDs. Moreover, the three types of CdTe QDs showed significantly different effects on mitochondrial membrane fluidity. MEA-CdTe QDs decreased mitochondrial membrane fluidity, l-Cys-CdTe QDs showed no obvious influence on mitochondrial membrane fluidity and TGA-CdTe QDs increased mitochondrial membrane fluidity. The interaction mechanism of CdTe QDs on mitochondrial permeability transition (MPT) pores as well as Cd2+ release by CdTe QDs were checked to determine the reason for their different effects on mitochondria. The results showed that the impact of the three types of CdTe QDs on mitochondria was not only related to the released metal ion, but also to their interaction with MPT pore proteins. This work emphasizes the importance of surface functional groups in the behavior of CdTe QDs at the sub-cellular level.
Collapse
Affiliation(s)
- Xun Xiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; ; Tel: +86-27-68756667
| | - Tao Gao
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; ; Tel: +86-27-68756667
| | - Bo-Rui Zhang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; ; Tel: +86-27-68756667
| | - Feng-Lei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; ; Tel: +86-27-68756667
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE) , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China . ; ; ; Tel: +86-27-68756667.,College of Chemistry and Chemical Engineering , Wuhan University of Science and Technology , Wuhan 430081 , PR China.,College of Chemistry and Material Science , Guangxi Teachers Education University , Nanning , 530001 , PR China
| |
Collapse
|
32
|
Banafshe HR, Mohsenpour M, Ardjmand A. Effects Following Intracerebroventricular Injection of Immunosuppressant Cyclosporine A On Inhibitory Avoidance Learning and Memory in Mice. Galen Med J 2018; 7:e1044. [PMID: 34466427 PMCID: PMC8343945 DOI: 10.22086/gmj.v0i0.1044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 04/27/2018] [Accepted: 05/04/2018] [Indexed: 11/30/2022] Open
Abstract
Background: Protein phosphatase-2B or calcineurin (CN) is the main phosphatase and a critical regulator of cellular pathways for learning, memory, and plasticity. Cyclosporine A(CyA), a phosphatase and peptidyl-prolyl cis/trans isomerase inhibitor, is a common immune suppressant extensively used in tissue transplantation. To further clarify the role of CN in different stages of learning and memory, the aim of the present study was to evaluate the role of CyA in an inhibitory avoidance (IA) model in mice. Materials and Methods: Using intracerebroventricular (ICV) injection of different doses of CyA (0.5, 5, and 50 nM) at different periods (pre-/post-training and pre-test), the effect of the drug was evaluated in a step-down IA paradigm. The latency of step-down (sec) was considered a criterion for memory performance. Results: The pre-training injections of CyA (0.5, 5 nM), however not of 50 nM, impaired IA learning acquisition. The post-training injection of high-dose CyA (50 nM) impaired memory consolidation. The pre-test ICV CyA injection did not impair memory retrieval; the ICV injection of CyA caused no change in locomotion. Conclusion: These findings suggest that CyA selectively interferes with acquisition, retention, but not retrieval, of information processing in mice. Given the crucial role of CN in common signaling pathway of memory performance and cognition, it could be a probable therapeutic target in the treatment of a wide variety of neurological conditions involving memory.
Collapse
Affiliation(s)
- Hamid Reza Banafshe
- Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran.,Department of Pharmacology, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohsen Mohsenpour
- Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Abolfazl Ardjmand
- Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran.,Department of Physiology, Kashan University of Medical Sciences, Kashan, Iran
| |
Collapse
|
33
|
Baines CP, Gutiérrez-Aguilar M. The still uncertain identity of the channel-forming unit(s) of the mitochondrial permeability transition pore. Cell Calcium 2018; 73:121-130. [PMID: 29793100 PMCID: PMC5993635 DOI: 10.1016/j.ceca.2018.05.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/07/2018] [Accepted: 05/12/2018] [Indexed: 10/16/2022]
Abstract
Mitochondria from different organisms can undergo a sudden process of inner membrane unselective leakiness to molecules known as the mitochondrial permeability transition (MPT). This process has been studied for nearly four decades and several proteins have been claimed to constitute, or at least regulate the usually inactive pore responsible for this transition. However, no protein candidate proposed as the actual pore-forming unit has passed rigorous gain- or loss-of-function genetic tests. Here we review evidence for -and against- putative channel-forming components of the MPT pore. We conclude that the structure of the MPT pore still remains largely undefined and suggest that future studies should follow established technical considerations to unambiguously consolidate the channel forming constituent(s) of the MPT pore.
Collapse
Affiliation(s)
- Christopher P Baines
- Dalton Cardiovascular Research Center, University of Missouri-Columbia, Columbia, MO 65211, USA; Department of Biomedical Sciences, University of Missouri-Columbia, Columbia, MO 65211, USA; Department of Medical Pharmacology and Physiology, University of Missouri-Columbia, Columbia, MO 65211, USA.
| | - Manuel Gutiérrez-Aguilar
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 Ciudad de México, Mexico.
| |
Collapse
|
34
|
Krestinina OV, Baburina YL, Odinokova IV, Azarashvili TS, Akatov VS. Melatonin Modulates Phosphorylation of 2′,3′-Cyclic Nucleotide-3′-Phosphodiesterase in the Presence of Protoporphyrin IX in the Brain Mitochondria of Rats during the Functioning of the Non-Specific Mitochondrial Pore. NEUROCHEM J+ 2018. [DOI: 10.1134/s1819712418010051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
35
|
Kaushik S, Shyam H, Sharma R, Balapure AK. Dietary isoflavone daidzein synergizes centchroman action via induction of apoptosis and inhibition of PI3K/Akt pathway in MCF-7/MDA MB-231 human breast cancer cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 40:116-124. [PMID: 29496164 DOI: 10.1016/j.phymed.2018.01.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 12/14/2017] [Accepted: 01/14/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Despite advancements in the prognosis and management of breast cancer, it remains a major cause of mortality in women worldwide. Centchroman (CC), an oral contraceptive has been found to exhibit anti-cancer potential against a wide range of cancer including breast cancer. PURPOSE The present study is intended to evaluate the ability of soy isoflavone Daidzein (DZ) in enhancing the efficacy of CC in Human Breast Cancer Cells (HBCCs). METHODS/STUDY DESIGN Sulforhodamine B assay was employed to determine the cytotoxicity induced by 10 µM CC & 50 µM DZ separately and together in MCF-7/MDA MB-231 HBCCs and non-tumorigenic Human Mammary Epithelial Cells (HMECs) MCF-10A as a control. Combination Index (CI) analysis was executed using CompuSyn software. Further, apoptosis was assessed using Annexin V/PI, AO/PI staining and tunel assay. Cell cycle, reactive oxygen species generation and mitochondrial membrane potential alteration was determined using flow cytometry. Western blot analysis was performed to check the expression of respective proteins. RESULTS The results suggest that the combination exerts elevated toxicity as compared to control and each drug per se without affecting HMECs MCF-10A. This therefore implies cancer cell specific action of CC plus DZ administered together. Additionally, combination index analysis suggests synergistic action of CC and DZ combination in HBCCs. Cell cycle analysis, Annexin V/PI staining, tunel assay and western blot analysis confirms the induction of apoptosis by combination in HBCCs. Interestingly, western blot analysis also revealed that the combination down-regulated the expression of proteins involved in cell survival i.e. PI3K, Akt and mTOR, suggesting inhibition of cell survival pathway. CONCLUSION The results overall demonstrate that CC plus DZ has higher anticancer efficacy as compared to either drug alone. Hence, the combination of CC plus DZ may offer a novel strategy for the management of breast cancer.
Collapse
Affiliation(s)
- Shweta Kaushik
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Taramani, Chennai, Tamil Nadu 600113, India
| | - Hari Shyam
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ramesh Sharma
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Anil K Balapure
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Taramani, Chennai, Tamil Nadu 600113, India.
| |
Collapse
|
36
|
Acute Limb Ischemia-Much More Than Just a Lack of Oxygen. Int J Mol Sci 2018; 19:ijms19020374. [PMID: 29373539 PMCID: PMC5855596 DOI: 10.3390/ijms19020374] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 01/17/2018] [Accepted: 01/23/2018] [Indexed: 12/12/2022] Open
Abstract
Acute ischemia of an extremity occurs in several stages, a lack of oxygen being the primary contributor of the event. Although underlying patho-mechanisms are similar, it is important to determine whether it is an acute or chronic event. Healthy tissue does not contain enlarged collaterals, which are formed in chronically malperfused tissue and can maintain a minimum supply despite occlusion. The underlying processes for enhanced collateral blood flow are sprouting vessels from pre-existing vessels (via angiogenesis) and a lumen extension of arterioles (via arteriogenesis). While disturbed flow patterns with associated local low shear stress upregulate angiogenesis promoting genes, elevated shear stress may trigger arteriogenesis due to increased blood volume. In case of an acute ischemia, especially during the reperfusion phase, fluid transfer occurs into the tissue while the vascular bed is simultaneously reduced and no longer reacts to vaso-relaxing factors such as nitric oxide. This process results in an exacerbative cycle, in which increased peripheral resistance leads to an additional lack of oxygen. This whole process is accompanied by an inundation of inflammatory cells, which amplify the inflammatory response by cytokine release. However, an extremity is an individual-specific composition of different tissues, so these processes may vary dramatically between patients. The image is more uniform when broken down to the single cell stage. Because each cell is dependent on energy produced from aerobic respiration, an event of acute hypoxia can be a life-threatening situation. Aerobic processes responsible for yielding adenosine triphosphate (ATP), such as the electron transport chain and oxidative phosphorylation in the mitochondria, suffer first, thus disrupting the integrity of cellular respiration. One consequence of this is irreparable damage of the cell membrane due to an imbalance of electrolytes. The eventual increase in net fluid influx associated with a decrease in intracellular pH is considered an end-stage event. Due to the lack of ATP, individual cell organelles can no longer sustain their activity, thus initiating the cascade pathways of apoptosis via the release of cytokines such as the BCL2 associated X protein (BAX). As ischemia may lead to direct necrosis, inflammatory processes are further aggravated. In the case of reperfusion, the flow of nascent oxygen will cause additional damage to the cell, further initiating apoptosis in additional surrounding cells. In particular, free oxygen radicals are formed, causing severe damage to cell membranes and desoxyribonucleic acid (DNA). However, the increased tissue stress caused by this process may be transient, as radical scavengers may attenuate the damage. Taking the above into final consideration, it is clearly elucidated that acute ischemia and subsequent reperfusion is a process that leads to acute tissue damage combined with end-organ loss of function, a condition that is difficult to counteract.
Collapse
|
37
|
Parks RJ, Murphy E, Liu JC. Mitochondrial Permeability Transition Pore and Calcium Handling. Methods Mol Biol 2018; 1782:187-196. [PMID: 29851001 DOI: 10.1007/978-1-4939-7831-1_11] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The opening of a large conductance channel in the inner mitochondrial membrane, known as the mitochondrial permeability transition pore (PTP), has been shown to be a primary mediator of cell death in the heart subjected to ischemia-reperfusion injury. Inhibitors of the PTP have been shown to reduce cardiac ischemia-reperfusion injury in many animal models. Furthermore, most cardioprotective strategies appear to reduce ischemic cell death either by reducing the triggers for the opening of the PTP, such as reducing calcium overload or reactive oxygen species, or by inhibiting PTP modulators. This chapter will focus on key issues in the study of the PTP and provide some methods for measuring PTP opening in isolated mitochondria.
Collapse
Affiliation(s)
- Randi J Parks
- Systems Biology Center, NHLBI, NIH, Bethesda, MD, 20892, USA
| | | | - Julia C Liu
- Systems Biology Center, NHLBI, NIH, Bethesda, MD, 20892, USA.
| |
Collapse
|
38
|
Huang J, Liu Z, Xu P, Zhang Z, Yin D, Liu J, He H, He M. Capsaicin prevents mitochondrial damage, protects cardiomyocytes subjected to anoxia/reoxygenation injury mediated by 14-3-3η/Bcl-2. Eur J Pharmacol 2018; 819:43-50. [DOI: 10.1016/j.ejphar.2017.11.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 11/07/2017] [Accepted: 11/16/2017] [Indexed: 10/18/2022]
|
39
|
Liu XL, Wang YD, Yu XM, Li DW, Li GR. Mitochondria-mediated damage to dopaminergic neurons in Parkinson's disease (Review). Int J Mol Med 2017; 41:615-623. [PMID: 29207041 DOI: 10.3892/ijmm.2017.3255] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 10/20/2017] [Indexed: 11/06/2022] Open
Abstract
Mitochondria are important organelles in virtually all eukaryotic cells, and are involved in a wide range of physiological and pathophysiological processes. Besides the generation of cellular energy in the form of adenosine triphosphate, mitochondria are also involved in calcium homeostasis, reactive oxygen species production and the activation of the intrinsic cell death pathway, thus determining cell survival and death. Mitochondrial abnormalities have been implicated in a wide range of disorders, including neurodegenerative disease such as Parkinson's disease (PD), and considered as a primary cause and central event responsible for the progressive loss of dopaminergic neurons in PD. Thus, reversion or attenuation of mitochondrial dysfunction should alleviate the severity or progression of the disease. The present review systematically summarizes the possible mechanisms associated with mitochondria‑mediated dopaminergic neuron damage in PD, in an attempt to elucidate the requirement for further studies for the development of effective PD treatments.
Collapse
Affiliation(s)
- Xiao-Liang Liu
- Cancer Center, The First Hospital of Jilin University, Changchun, Jilin 132021, P.R. China
| | - Ying-Di Wang
- Department of Urinary Surgery, The Tumor Hospital of Jilin Province, Changchun, Jilin 130012, P.R. China
| | - Xiu-Ming Yu
- Department of Immunology, The First Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin 130021, P.R. China
| | - Da-Wei Li
- Department of Neurology, Affiliated Hospital of Beihua University, Jilin, Jilin 132000, P.R. China
| | - Guang-Ren Li
- Department of Neurology, The Third Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| |
Collapse
|
40
|
Paradies G, Paradies V, Ruggiero FM, Petrosillo G. Mitochondrial bioenergetics decay in aging: beneficial effect of melatonin. Cell Mol Life Sci 2017; 74:3897-3911. [PMID: 28785806 PMCID: PMC11107727 DOI: 10.1007/s00018-017-2619-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 08/03/2017] [Indexed: 12/18/2022]
Abstract
Aging is a biological process characterized by progressive decline in physiological functions, increased oxidative stress, reduced capacity to respond to stresses, and increased risk of contracting age-associated disorders. Mitochondria are referred to as the powerhouse of the cell through their role in the oxidative phosphorylation to generate ATP. These organelles contribute to the aging process, mainly through impairment of electron transport chain activity, opening of the mitochondrial permeability transition pore and increased oxidative stress. These events lead to damage to proteins, lipids and mitochondrial DNA. Cardiolipin, a phospholipid of the inner mitochondrial membrane, plays a pivotal role in several mitochondrial bioenergetic processes as well as in mitochondrial-dependent steps of apoptosis and in mitochondrial membrane stability and dynamics. Cardiolipin alterations are associated with mitochondrial bienergetics decline in multiple tissues in a variety of physiopathological conditions, as well as in the aging process. Melatonin, the major product of the pineal gland, is considered an effective protector of mitochondrial bioenergetic function. Melatonin preserves mitochondrial function by preventing cardiolipin oxidation and this may explain, at least in part, the protective role of this compound in mitochondrial physiopathology and aging. Here, mechanisms through which melatonin exerts its protective role against mitochondrial dysfunction associated with aging and age-associated disorders are discussed.
Collapse
Affiliation(s)
- Giuseppe Paradies
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy.
| | - Valeria Paradies
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
| | - Francesca M Ruggiero
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
| | - Giuseppe Petrosillo
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council, Bari, Italy
| |
Collapse
|
41
|
Xiang X, Wu C, Zhang BR, Gao T, Zhao J, Ma L, Jiang FL, Liu Y. The relationship between the length of surface ligand and effects of CdTe quantum dots on the physiological functions of isolated mitochondria. CHEMOSPHERE 2017; 184:1108-1116. [PMID: 28672691 DOI: 10.1016/j.chemosphere.2017.06.091] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 06/16/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
The potential toxicity of Quantum dots (QDs) should be assessed comprehensively for their fast spreading applications. Many studies have shown the toxicity of QDs is associated with their surface ligands. In this work, two analog ligands with one carbon difference, 2-mercaptoacetic acid (TGA) and 3-mercaptopropionic acid (MPA) were used as coating materials in the syntheses of two types of CdTe QDs with similar physicochemical properties. Then the biological effects of QDs on isolated mitochondria were studied. It was found that the two types of QDs could impair mitochondrial respiration and induce mitochondrial permeability transition (MPT). However, as compared with TGA-CdTe QDs, MPA-CdTe QDs had a stronger effect on MPT. The weaker effect of TGA-CdTe QDs on MPT might be owing to their better stability and thus less amount of released Cd2+, which could be further explained by the stronger affinity between the ligand (TGA) and the cadmium complexes in the crystal growth of QDs. These results highlighted the importance of ligands responsible for the toxicity of QDs at the sub-cellular level.
Collapse
Affiliation(s)
- Xun Xiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Can Wu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China; College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, PR China
| | - Bo-Rui Zhang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Tao Gao
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Jie Zhao
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Long Ma
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Feng-Lei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China.
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China; College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, PR China.
| |
Collapse
|
42
|
Song SB, Jang SY, Kang HT, Wei B, Jeoun UW, Yoon GS, Hwang ES. Modulation of Mitochondrial Membrane Potential and ROS Generation by Nicotinamide in a Manner Independent of SIRT1 and Mitophagy. Mol Cells 2017; 40:503-514. [PMID: 28736426 PMCID: PMC5547220 DOI: 10.14348/molcells.2017.0081] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 06/15/2017] [Indexed: 12/31/2022] Open
Abstract
Nicotinamide (NAM) plays essential roles in physiology through facilitating NAD+ redox homeostasis. Importantly, at high doses, it protects cells under oxidative stresses, and has shown therapeutic effectiveness in a variety of disease conditions. In our previous studies, NAM lowered reactive oxygen species (ROS) levels and extended cellular life span in primary human cells. In the treated cells, levels of NAD+/NADH and SIRT1 activity increased, while mitochondrial content decreased through autophagy activation. The remaining mitochondria were marked with low superoxide levels and high membrane potentials (Δψm); we posited that the treatment of NAM induced an activation of mitophagy that is selective for depolarized mitochondria, which produce high levels of ROS. However, evidence for the selective mitophagy that is mediated by SIRT1 has never been provided. This study sought to explain the mechanisms by which NAM lowers ROS levels and increases Δψm. Our results showed that NAM and SIRT1 activation exert quite different effects on mitochondrial physiology. Furthermore, the changes in ROS and Δψm were not found to be mediated through autophagy or SIRT activation. Rather, NAM suppressed superoxide generation via a direct reduction of electron transport, and increased Δψm via suppression of mitochondrial permeability transition pore formation. Our results dissected the effects of cellular NAD+ redox modulation, and emphasized the importance of the NAD+/NADH ratio in the mitochondria as well as the cytosol in maintaining mitochondrial quality.
Collapse
Affiliation(s)
- Seon Beom Song
- Department of Life Science, University of Seoul, Seoul 02504,
Korea
| | - So-Young Jang
- Department of Life Science, University of Seoul, Seoul 02504,
Korea
| | - Hyun Tae Kang
- Department of Life Science, University of Seoul, Seoul 02504,
Korea
| | - Bie Wei
- Department of Life Science, University of Seoul, Seoul 02504,
Korea
| | - Un-woo Jeoun
- Department of Biomedical Science and Department of Biochemistry, Ajou University School of Medicine, Suwon 16499,
Korea
| | - Gye Soon Yoon
- Department of Biomedical Science and Department of Biochemistry, Ajou University School of Medicine, Suwon 16499,
Korea
| | - Eun Seong Hwang
- Department of Life Science, University of Seoul, Seoul 02504,
Korea
| |
Collapse
|
43
|
Suppression of Inner Mitochondrial Membrane Peptidase 2-Like (IMMP2L) Gene Exacerbates Hypoxia-Induced Neural Death Under High Glucose Condition. Neurochem Res 2017; 42:1504-1514. [PMID: 28316022 DOI: 10.1007/s11064-017-2207-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/08/2017] [Accepted: 02/13/2017] [Indexed: 10/19/2022]
Abstract
It is known that diabetes hyperglycemia enhances cerebral ischemia and reperfusion induced damage. We have previously shown that mutation of inner mitochondrial membrane peptidase 2-like (IMMP2L) increases brain damage caused by transient cerebral ischemia. In this study, we attempt to examine the impact of IMMP2L deficiency on an in vitro model that mimics the diabetic hypoxic conditions. Normal IMMP2L wild type and IMMP2L gene deleted HT22 cells were cultured. Hypoxia was induced under high glucose and acidic conditions with 4 h of oxygen deprivation. Cell viability was assessed by CCK-8 assay and cell death was determined using Annexin V/7-AAD assay. Superoxide production was measured using dihydroethidium staining and mitochondrial membrane potential was detected using JC-1 probe. Suppression of IMMP2L reduced the cell viability, increased the ROS production and decreased the mitochondrial membrane potential. In conclusion, our study demonstrated that deficiency of IMMP2L in cells, cultured under hypoxia, high glucose and acidic conditions, exacerbated neuronal death under a condition that mimics in vivo cerebral ischemia in diabetic condition.
Collapse
|
44
|
Golovach NG, Cheshchevik VT, Lapshina EA, Ilyich TV, Zavodnik IB. Calcium-Induced Mitochondrial Permeability Transitions: Parameters of Ca 2+ Ion Interactions with Mitochondria and Effects of Oxidative Agents. J Membr Biol 2017; 250:225-236. [PMID: 28251264 DOI: 10.1007/s00232-017-9953-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 02/21/2017] [Indexed: 12/13/2022]
Abstract
We evaluated the parameters of Ca2+-induced mitochondrial permeability transition (MPT) pore formations, Ca2+ binding constants, stoichiometry, energy of activation, and the effect of oxidative agents, tert-butyl hydroperoxide (tBHP), and hypochlorous acid (HOCl), on Ca2+ -mediated process in rat liver mitochondria. From the Hill plot of the dependence of MPT rate on Ca2+ concentration, we determined the order of interaction of Ca2+ ions with the mitochondrial sites, n = 3, and the apparent Kd = 60 ± 12 µM. We also found the apparent Michaelis-Menten constant, Km, for Ca2+ interactions with mitochondria to be equal to 75 ± 20 µM, whereas that in the presence of 300 µM tBHP was 120 ± 20 µM. Using the Arrhenius plots of the temperature dependences of apparent mitochondrial swelling rate at various Ca2+ concentrations, we calculated the activation energy of the MPT process. ΔEa was 130 ± 20 kJ/mol at temperatures below the break point of the Arrhenius plot (30-34 °C) and 50 ± 9 kJ/mol at higher temperatures. Ca2+ ions induced rapid mitochondrial NADH depletion and membrane depolarization. Prevention of the pore formation by cyclosporin A inhibited Ca2+-dependent mitochondrial depolarization and Mg2+ ions attenuated the potential dissipation. tBHP (10-150 µM) dose-dependently enhanced the rate of MPT opening, whereas the effect of HOCl on MPT depended on the ratio of HOCl/Ca2+. The apparent Km of tBHP interaction with mitochondria in the swelling reaction was found to be Km = 11 ± 3 µM. The present study provides evidence that three calcium ions interact with mitochondrial site with high affinity during MPT. Ca2+-induced MPT pore formations due to mitochondrial membrane protein denaturation resulted in membrane potential dissipation. Oxidants with different mechanisms, tBHP and HOCl, reduced mitochondrial membrane potential and oxidized mitochondrial NADH in EDTA-free medium and had an effect on Ca2+-induced MPT onset.
Collapse
Affiliation(s)
- Nina G Golovach
- Department of Biochemistry, Yanka Kupala State University of Grodno, Blvd. Len. Kom. - 50, 230030, Grodno, Belarus
| | - Vitali T Cheshchevik
- Department of Biochemistry, Yanka Kupala State University of Grodno, Blvd. Len. Kom. - 50, 230030, Grodno, Belarus
| | - Elena A Lapshina
- Department of Biochemistry, Yanka Kupala State University of Grodno, Blvd. Len. Kom. - 50, 230030, Grodno, Belarus
| | - Tatsiana V Ilyich
- Department of Biochemistry, Yanka Kupala State University of Grodno, Blvd. Len. Kom. - 50, 230030, Grodno, Belarus
| | - Ilya B Zavodnik
- Department of Biochemistry, Yanka Kupala State University of Grodno, Blvd. Len. Kom. - 50, 230030, Grodno, Belarus.
| |
Collapse
|
45
|
Mnatsakanyan N, Beutner G, Porter GA, Alavian KN, Jonas EA. Physiological roles of the mitochondrial permeability transition pore. J Bioenerg Biomembr 2017; 49:13-25. [PMID: 26868013 PMCID: PMC4981558 DOI: 10.1007/s10863-016-9652-1] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 02/04/2016] [Indexed: 01/01/2023]
Abstract
Neurons experience high metabolic demand during such processes as synaptic vesicle recycling, membrane potential maintenance and Ca2+ exchange/extrusion. The energy needs of these events are met in large part by mitochondrial production of ATP through the process of oxidative phosphorylation. The job of ATP production by the mitochondria is performed by the F1FO ATP synthase, a multi-protein enzyme that contains a membrane-inserted portion, an extra-membranous enzymatic portion and an extensive regulatory complex. Although required for ATP production by mitochondria, recent findings have confirmed that the membrane-confined portion of the c-subunit of the ATP synthase also houses a large conductance uncoupling channel, the mitochondrial permeability transition pore (mPTP), the persistent opening of which produces osmotic dysregulation of the inner mitochondrial membrane, uncoupling of oxidative phosphorylation and cell death. Recent advances in understanding the molecular components of mPTP and its regulatory mechanisms have determined that decreased uncoupling occurs in states of enhanced mitochondrial efficiency; relative closure of mPTP therefore contributes to cellular functions as diverse as cardiac development and synaptic efficacy.
Collapse
Affiliation(s)
- Nelli Mnatsakanyan
- Department Internal Medicine, Section of Endocrinology, Yale University, New Haven, CT, USA
| | - Gisela Beutner
- Department of Pediatrics (Cardiology), University of Rochester Medical Center, Rochester, NY, USA
| | - George A Porter
- Department of Pediatrics (Cardiology), University of Rochester Medical Center, Rochester, NY, USA
| | - Kambiz N Alavian
- Division of Brain Sciences, Department of Medicine, Imperial College London, London, UK
| | - Elizabeth A Jonas
- Department Internal Medicine, Section of Endocrinology, Yale University, New Haven, CT, USA.
| |
Collapse
|
46
|
|
47
|
Rasheed MZ, Tabassum H, Parvez S. Mitochondrial permeability transition pore: a promising target for the treatment of Parkinson's disease. PROTOPLASMA 2017; 254:33-42. [PMID: 26825389 DOI: 10.1007/s00709-015-0930-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 12/10/2015] [Indexed: 06/05/2023]
Abstract
Among the neurodegenerative diseases (ND), Parkinson's disease affects 6.3 million people worldwide characterized by the progressive loss of dopaminergic neurons in substantia nigra. The mitochondrial permeability transition pore (mtPTP) is a non-selective voltage-dependent mitochondrial channel whose opening modifies the permeability properties of the mitochondrial inner membrane. It is recognized as a potent pharmacological target for diseases associated with mitochondrial dysfunction and excessive cell death including ND such as Parkinson's disease (PD). Imbalance in Ca2+ concentration, change in mitochondrial membrane potential, overproduction of reactive oxygen species (ROS), or mutation in mitochondrial genome has been implicated in the pathophysiology of the opening of the mtPTP. Different proteins are released by permeability transition including cytochrome c which is responsible for apoptosis. This review aims to discuss the importance of PTP in the pathophysiology of PD and puts together different positive as well as negative aspects of drugs such as pramipexole, ropinirole, minocyclin, rasagilin, and safinamide which act as a blocker or modifier for mtPTP. Some of them may be detrimental in their neuroprotective nature.
Collapse
Affiliation(s)
- Md Zeeshan Rasheed
- Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
| | - Heena Tabassum
- Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
- Department of Biochemistry, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India
| | - Suhel Parvez
- Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), New Delhi, 110 062, India.
| |
Collapse
|
48
|
Jiang H, Zhang C, Tang Y, Zhao J, Wang T, Liu H, Sun X. The regulator of calcineurin 1 increases adenine nucleotide translocator 1 and leads to mitochondrial dysfunctions. J Neurochem 2016; 140:307-319. [PMID: 27861892 PMCID: PMC5248620 DOI: 10.1111/jnc.13900] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 10/08/2016] [Accepted: 11/07/2016] [Indexed: 11/29/2022]
Abstract
The over‐expression of regulator of calcineurin 1 isoform 1 (RCAN1.1) has been implicated in mitochondrial dysfunctions of Alzheimer's disease; however, the mechanism linking RCAN1.1 over‐expression and the mitochondrial dysfunctions remains unknown. In this study, we use human neuroblastoma SH‐SY5Y cells stably expressing RCAN1.1S and rat primary neurons infected with RCAN1.1S expression lentivirus to study the association of RCAN1 with mitochondrial functions. Our study here showed that the over‐expression of RCAN1.1S remarkably up‐regulates the expression of adenine nucleotide translocator (ANT1) by stabilizing ANT1 mRNA. The increased ANT1 level leads to accelerated ATP–ADP exchange rate, more Ca2+‐induced mitochondrial permeability transition pore opening, increased cytochrome c release, and eventually cell apoptosis. Furthermore, knockdown of ANT1 expression brings these mitochondria perturbations caused by RCAN1.1S back to normal. The effect of RCAN1.1S on ANT1 was independent of its inhibition on calcineurin. This study elucidated a novel function of RCAN1 in mitochondria and provides a molecular basis for the RCAN1.1S over‐expression‐induced mitochondrial dysfunctions and neuronal apoptosis. ![]()
Collapse
Affiliation(s)
- Hui Jiang
- Otolaryngology Key Lab, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Pediatrics, 2nd Hospital of Shandong University, Jinan, Shandong, China
| | - Chen Zhang
- Otolaryngology Key Lab, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yu Tang
- Otolaryngology Key Lab, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Juan Zhao
- Otolaryngology Key Lab, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Tan Wang
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Heng Liu
- Otolaryngology Key Lab, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xiulian Sun
- Brain Research Institute, Qilu Hospital of Shandong University, Jinan, Shandong, China
| |
Collapse
|
49
|
Abstract
As the heart is an energy-demanding organ, impaired cardiac energy metabolism and mitochondrial function have been inexorably linked to cardiac dysfunction. There is a growing recognition that mitochondrial dysfunction contributes to impaired myocardial energetics and increased oxidative stress in cardiomyopathies, cardiac ischemic damage and heart failure (HF), and mitochondrial permeability transition pore opening has been reported a critical trigger of myocyte death and myocardial remodeling. It is well established that mitochondria play pivotal roles in intracellular signaling in both cell death as well as in cardioprotective pathways. Moreover, recent studies have shown that defects in mitochondrial dynamics affecting biogenesis and turnover are linked to cardiac senescence and HF. Accordingly, there has been an increasing interest in targeting mitochondria for HF therapy. This article reviews the background and recent evidence of mitochondrial involvement in several types of cell death (apoptosis, necrosis and autophagy) occurring in HF. In addition, potential strategies for targeting mitochondria are examined, and their utility in HF therapy considered.
Collapse
|
50
|
2',3'-Cyclic nucleotide 3'-phosphodiesterase as a messenger of protection of the mitochondrial function during melatonin treatment in aging. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1859:94-103. [PMID: 27836641 DOI: 10.1016/j.bbamem.2016.11.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 11/01/2016] [Accepted: 11/06/2016] [Indexed: 01/19/2023]
Abstract
The process of aging is considered to be tightly related to mitochondrial dysfunction. One of the causes of aging is an increased sensitivity to the induction of mitochondrial permeability transition pore (mPTP) opening in the inner membrane of mitochondria. Melatonin, a natural antioxidant, is a hormone produced by the pineal gland. The role of melatonin whose level decreases with aging is well understood. In the present study, we demonstrated that long-term treatment of aged rats with melatonin improved the functional state of mitochondria; thus, the Ca2+ capacity was enhanced and mitochondrial swelling was deaccelerated in mitochondria. Melatonin prevented mPTP and impaired the release of cytochrome c and 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNPase) from mitochondria of both young and aged rats. Our data suggest that melatonin retains СNPase inside mitochondria, thereby providing the protection of the protein against deleterious effects of 2',3'-cAMP in aging.
Collapse
|