1
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Cong J, Li JY, Zou W. Mechanism and treatment of intracerebral hemorrhage focus on mitochondrial permeability transition pore. Front Mol Neurosci 2024; 17:1423132. [PMID: 39156127 PMCID: PMC11328408 DOI: 10.3389/fnmol.2024.1423132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 07/15/2024] [Indexed: 08/20/2024] Open
Abstract
Intracerebral hemorrhage (ICH) is the second most common subtype of stroke, characterized by high mortality and a poor prognosis. Despite various treatment methods, there has been limited improvement in the prognosis of ICH over the past decades. Therefore, it is imperative to identify a feasible treatment strategy for ICH. Mitochondria are organelles present in most eukaryotic cells and serve as the primary sites for aerobic respiration and energy production. Under unfavorable cellular conditions, mitochondria can induce changes in permeability through the opening of the mitochondrial permeability transition pore (mPTP), ultimately leading to mitochondrial dysfunction and contributing to various diseases. Recent studies have demonstrated that mPTP plays a role in the pathological processes associated with several neurodegenerative diseases including Parkinson's disease, Alzheimer's disease, Huntington's disease, ischemic stroke and ischemia-reperfusion injury, among others. However, there is limited research on mPTP involvement specifically in ICH. Therefore, this study comprehensively examines the pathological processes associated with mPTP in terms of oxidative stress, apoptosis, necrosis, autophagy, ferroptosis, and other related mechanisms to elucidate the potential mechanism underlying mPTP involvement in ICH. This research aims to provide novel insights for the treatment of secondary injury after ICH.
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Affiliation(s)
- Jing Cong
- The First School of Clinical Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Jing-Yi Li
- The Second School of Clinical Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Wei Zou
- Molecular Biology Laboratory of Clinical Integrated of Traditional Chinese and Western Medicine of Heilong Jiang Province, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
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2
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Salehi E, Shadboorestan A, Mohammadi-Bardbori A, Mousavi A, Kargar-Abargouei E, Sarkoohi P, Omidi M. Effect of crocin and quercetin supplementation in cryopreservation medium on post-thaw human sperm quality. Cell Tissue Bank 2024; 25:531-540. [PMID: 37776436 DOI: 10.1007/s10561-023-10110-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 08/28/2023] [Indexed: 10/02/2023]
Abstract
Biochemical and physical changes during the cryopreservation process adversely affect sperm function required for fertilization. Recently, many studies have been conducted to find effective pre-freezing treatments to limit these damages. The present study aimed to investigate the effects of pre-freezing treatment with quercetin and crocin, individually or in combination, on sperm parameters after thawing procedure. For this, semen samples from 20 normozoospermic men were collected and then each sample was divided into five equal parts: 1. fresh group 2. frozen-thawed group without addition of antioxidants 3. frozen-thawed group containing 1 mM crocin, 4. frozen-thawed group containing 50 μM quercetin, and 5. frozen-thawed group containing a combination of 1 mM crocin and 50 μM quercetin. Pre-cryopreservation and post-thaw sperm motility, morphology, viability, DNA fragmentation, reactive oxygen species [1] (ROS) levels, and mitochondrial membrane potential [2] (MMP) were investigated. Cryopreservation significantly reduced sperm quality. Both crocin and quercetin individually improved sperm progressive motility, decreased ROS levels, reduced DNA fragmentation, and marginally increased MMP, though crocin seems to be more successful in protecting sperm quality. More interestingly, the combined addition of crocin and quercetin to the sperm-freezing medium did not show positive effects on sperm quality. Crocin and quercetin may play a role in mitigating the cryopreservation-induced injury to sperm.
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Affiliation(s)
- Ensieh Salehi
- Department of Gynecology, School of Medicine, Fertility and Infertility Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Amir Shadboorestan
- Department of Toxicology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Afshin Mohammadi-Bardbori
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abedeh Mousavi
- Student Research Committee, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Elias Kargar-Abargouei
- Department of Anatomy, School of Medicine, Molecular Medicine Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Parisa Sarkoohi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Mahmoud Omidi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
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3
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Waseem M, Wang BD. Promising Strategy of mPTP Modulation in Cancer Therapy: An Emerging Progress and Future Insight. Int J Mol Sci 2023; 24:5564. [PMID: 36982637 PMCID: PMC10051994 DOI: 10.3390/ijms24065564] [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: 02/07/2023] [Revised: 03/04/2023] [Accepted: 03/07/2023] [Indexed: 03/17/2023] Open
Abstract
Cancer has been progressively a major global health concern. With this developing global concern, cancer determent is one of the most significant public health challenges of this era. To date, the scientific community undoubtedly highlights mitochondrial dysfunction as a hallmark of cancer cells. Permeabilization of the mitochondrial membranes has been implicated as the most considerable footprint in apoptosis-mediated cancer cell death. Under the condition of mitochondrial calcium overload, exclusively mediated by oxidative stress, an opening of a nonspecific channel with a well-defined diameter in mitochondrial membrane allows free exchange between the mitochondrial matrix and the extra mitochondrial cytosol of solutes and proteins up to 1.5 kDa. Such a channel/nonspecific pore is recognized as the mitochondrial permeability transition pore (mPTP). mPTP has been established for regulating apoptosis-mediated cancer cell death. It has been evident that mPTP is critically linked with the glycolytic enzyme hexokinase II to defend cellular death and reduce cytochrome c release. However, elevated mitochondrial Ca2+ loading, oxidative stress, and mitochondrial depolarization are critical factors leading to mPTP opening/activation. Although the exact mechanism underlying mPTP-mediated cell death remains elusive, mPTP-mediated apoptosis machinery has been considered as an important clamp and plays a critical role in the pathogenesis of several types of cancers. In this review, we focus on structure and regulation of the mPTP complex-mediated apoptosis mechanisms and follow with a comprehensive discussion addressing the development of novel mPTP-targeting drugs/molecules in cancer treatment.
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Affiliation(s)
- Mohammad Waseem
- Department of Pharmaceutical Sciences, School of Pharmacy and Health Professions, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA;
| | - Bi-Dar Wang
- Department of Pharmaceutical Sciences, School of Pharmacy and Health Professions, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA;
- Hormone Related Cancers Program, University of Maryland Greenebaum Comprehensive Cancer Center, Baltimore, MD 21201, USA
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4
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Kumar S, Dhamija B, Attrish D, Sawant V, Sengar M, Thorat J, Shet T, Jain H, Purwar R. Genetic alterations and oxidative stress in T cell lymphomas. Pharmacol Ther 2022; 236:108109. [PMID: 35007658 DOI: 10.1016/j.pharmthera.2022.108109] [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: 09/27/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 12/20/2022]
Abstract
T cell lymphomas encompass a diverse group of Non-Hodgkin lymphomas with a wide spectrum of clinical, immunological and pathological manifestations. In the last two decades there has been a progress in our understanding of the cell of origin, genetic abnormalities and their impact on behaviour in T cell lymphomas. Genetic alterations are one of the critical drivers of the pathogenesis of T cell lymphoma. Disease progression has been correlated with multiple genetic abnormalities where malignant clones arise primarily out of the host immune surveillance arsenal. There are many cellular processes involved in disease development, and some of them are T cell signaling, differentiation, epigenetic modifications, and immune regulation. Modulation of these crucial pathways via genetic mutations and chromosomal abnormalities possessing either point or copy number mutations helps tumor cells to develop a niche favourable for their growth via metabolic alterations. Several metabolic pathways especially regulation of redox homeostasis is critical in pathogenesis of lymphoma. Disruption of redox potential and induction of oxidative stress renders malignant cells vulnerable to mitochondrial damage and triggers apoptotic pathways causing cell death. Targeting genetic abnormalities and oxidative stress along with current treatment regime have the potential for improved therapeutics and presents new combination approaches towards selective treatment of T cell lymphomas.
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Affiliation(s)
- Sushant Kumar
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
| | - Bhavuk Dhamija
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
| | - Diksha Attrish
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
| | - Vinanti Sawant
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India
| | - Manju Sengar
- Medical Oncology, Tata memorial Hospital, Mumbai, Maharashtra 400012, India
| | - Jayashree Thorat
- Medical Oncology, Tata memorial Hospital, Mumbai, Maharashtra 400012, India
| | - Tanuja Shet
- Medical Oncology, Tata memorial Hospital, Mumbai, Maharashtra 400012, India
| | - Hasmukh Jain
- Medical Oncology, Tata memorial Hospital, Mumbai, Maharashtra 400012, India
| | - Rahul Purwar
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India.
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Latifah SY, Gopalsamy B, Abdul Rahim R, Manaf Ali A, Haji Lajis N. Ultrastructural and Morphological Effects in T-Lymphoblastic Leukemia CEM-SS Cells Following Treatment with Nordamnacanthal and Damnacanthal from Roots of Morinda elliptica. Molecules 2022; 27:molecules27134136. [PMID: 35807381 PMCID: PMC9268620 DOI: 10.3390/molecules27134136] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/28/2022] [Accepted: 06/13/2022] [Indexed: 02/01/2023] Open
Abstract
Background: Morinda elliptica (family Rubiaceae), locally known as ‘mengkudu kecil’, has been used by the Malays for medicinal purposes. Anthraquinones isolated from the roots of Morinda elliptica, namely nordamnacanthal and damnacanthal, have been widely reported to exhibit anticancer and antioxidant properties in various cancer models in vitro and in vivo. Aim: This study analyzed the morphological and ultrastructural effects of damnacanthal and nordamnacanthal on T-lymphoblastic leukemia CEM-SS cells. Method: Light microscopy, Giemsa staining, Wright’s staining, scanning electron microscopy, and transmission electron microscopy were carried out to determine apoptosis, necrosis, and ultrastructural changes that occurred within the cells. Results: The outcomes showed that these compounds induced cell death by apoptosis and necrosis, specifically at higher doses of 10 and 30 μg/mL. Condensation and fragmentation of the nuclear chromatin, which further separated into small, membrane-bound vesicles known as apoptotic bodies, were observed in the nuclei and cytoplasm. The plasma membranes and cytoskeletons also showed marked morphological changes upon treatment with damnacanthal and nordamnacanthal, indicating apoptosis. Conclusion: Therefore, we report that damnacanthal and nordamnacanthal exhibit anticancer properties by inducing apoptosis and necrosis in CEM-SS cells, and they have potential as a drug for the treatment of T-lymphoblastic leukemia.
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Affiliation(s)
- Saiful Yazan Latifah
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
- Correspondence: ; Tel.: +603-89472308
| | - Banulata Gopalsamy
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Raha Abdul Rahim
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Abdul Manaf Ali
- Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin (UniSZA), Kuala Terengganu 20300, Malaysia;
| | - Nordin Haji Lajis
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Malaysia;
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6
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Poulkouras R, Dijk G, Lefevre M, Bača M, Moreau D, O'Connor RP. PEDOT:PSS coated electrodes reduce intracellular oxidation and cell damage with pulsed electric field application. Bioelectrochemistry 2022; 147:108163. [DOI: 10.1016/j.bioelechem.2022.108163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 05/12/2022] [Accepted: 05/15/2022] [Indexed: 11/26/2022]
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7
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Cavezzi A, Menicagli R, Troiani E, Corrao S. COVID-19, Cation Dysmetabolism, Sialic Acid, CD147, ACE2, Viroporins, Hepcidin and Ferroptosis: A Possible Unifying Hypothesis. F1000Res 2022; 11:102. [PMID: 35340277 PMCID: PMC8921693 DOI: 10.12688/f1000research.108667.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/20/2022] [Indexed: 08/26/2024] Open
Abstract
Background: iron and calcium dysmetabolism, with hyperferritinemia, hypoferremia, hypocalcemia and anemia have been documented in the majority of COVID-19 patients at later/worse stages. Furthermore, complementary to ACE2, both sialic acid (SA) molecules and CD147 proved relevant host receptors for SARS-CoV-2 entry, which explains the viral attack to multiple types of cells, including erythrocytes, endothelium and neural tissue. Several authors advocated that cell ferroptosis may be the core and final cell degenerative mechanism. Methods: a literature research was performed in several scientific search engines, such as PubMed Central, Cochrane Library, Chemical Abstract Service. More than 500 articles were retrieved until mid-December 2021, to highlight the available evidence about the investigated issues. Results: based on COVID-19 literature data, we have highlighted a few pathophysiological mechanisms, associated with virus-based cation dysmetabolism, multi-organ attack, mitochondria degeneration and ferroptosis. Our suggested elucidated pathological sequence is: a) spike protein subunit S1 docking with sialylated membrane glycoproteins/receptors (ACE2, CD147), and S2 subunit fusion with the lipid layer; b) cell membrane morpho-functional changes due to the consequent electro-chemical variations and viroporin action, which induce an altered ion channel function and intracellular cation accumulation; c) additional intracellular iron concentration due to a deregulated hepcidin-ferroportin axis, with higher hepcidin levels. Viral invasion may also affect erythrocytes/erythroid precursors, endothelial cells and macrophages, through SA and CD147 receptors, with relative hemoglobin and iron/calcium dysmetabolism. AB0 blood group, hemochromatosis, or environmental elements may represent possible factors which affect individual susceptibility to COVID-19. Conclusions: our literature analysis confirms the combined role of SA molecules, ACE2, CD147, viroporins and hepcidin in determining the cation dysmetabolism and final ferroptosis in the cells infected by SARS-CoV-2. The altered ion channels and electrochemical gradients of the cell membrane have a pivotal role in the virus entry and cell dysmetabolism, with subsequent multi-organ immune-inflammatory degeneration and erythrocyte/hemoglobin alterations.
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Affiliation(s)
- Attilio Cavezzi
- Eurocenter Venalinfa, San Benedetto del Tronto, AP, 63074, Italy
| | | | - Emidio Troiani
- Cardiology Unit, Social Security Institute, State Hospital, Cailungo, 47893, San Marino
| | - Salvatore Corrao
- Department of Clinical Medicine, Internal Medicine Division,, ARNAS Civico Di Cristina Benfratelli Hospital Trust, Palermo, Italy
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8
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Cavezzi A, Menicagli R, Troiani E, Corrao S. COVID-19, Cation Dysmetabolism, Sialic Acid, CD147, ACE2, Viroporins, Hepcidin and Ferroptosis: A Possible Unifying Hypothesis. F1000Res 2022; 11:102. [PMID: 35340277 PMCID: PMC8921693 DOI: 10.12688/f1000research.108667.2] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/17/2022] [Indexed: 12/15/2022] Open
Abstract
Background: iron and calcium dysmetabolism, with hyperferritinemia, hypoferremia, hypocalcemia and anemia have been documented in the majority of COVID-19 patients at later/worse stages. Furthermore, complementary to ACE2, both sialic acid (SA) molecules and CD147 proved relevant host receptors for SARS-CoV-2 entry, which explains the viral attack to multiple types of cells, including erythrocytes, endothelium and neural tissue. Several authors advocated that cell ferroptosis may be the core and final cell degenerative mechanism. Methods: a literature research was performed in several scientific search engines, such as PubMed Central, Cochrane Library, Chemical Abstract Service. More than 500 articles were retrieved until mid-December 2021, to highlight the available evidence about the investigated issues. Results: based on COVID-19 literature data, we have highlighted a few pathophysiological mechanisms, associated with virus-based cation dysmetabolism, multi-organ attack, mitochondria degeneration and ferroptosis. Our suggested elucidated pathological sequence is: a) spike protein subunit S1 docking with sialylated membrane glycoproteins/receptors (ACE2, CD147), and S2 subunit fusion with the lipid layer; b) cell membrane morpho-functional changes due to the consequent electro-chemical variations and viroporin action, which induce an altered ion channel function and intracellular cation accumulation; c) additional intracellular iron concentration due to a deregulated hepcidin-ferroportin axis, with higher hepcidin levels. Viral invasion may also affect erythrocytes/erythroid precursors, endothelial cells and macrophages, through SA and CD147 receptors, with relative hemoglobin and iron/calcium dysmetabolism. AB0 blood group, hemochromatosis, or environmental elements may represent possible factors which affect individual susceptibility to COVID-19. Conclusions: our literature analysis confirms the combined role of SA molecules, ACE2, CD147, viroporins and hepcidin in determining the cation dysmetabolism and final ferroptosis in the cells infected by SARS-CoV-2. The altered ion channels and electrochemical gradients of the cell membrane have a pivotal role in the virus entry and cell dysmetabolism, with subsequent multi-organ immune-inflammatory degeneration and erythrocyte/hemoglobin alterations.
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Affiliation(s)
- Attilio Cavezzi
- Eurocenter Venalinfa, San Benedetto del Tronto, AP, 63074, Italy
| | | | - Emidio Troiani
- Cardiology Unit, Social Security Institute, State Hospital, Cailungo, 47893, San Marino
| | - Salvatore Corrao
- Department of Clinical Medicine, Internal Medicine Division,, ARNAS Civico Di Cristina Benfratelli Hospital Trust, Palermo, Italy
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9
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Kim MJ, Hwang YH, Hwang JW, Alam Z, Lee DY. Heme oxygenase-1 gene delivery for altering high mobility group box-1 protein in pancreatic islet. J Control Release 2022; 343:326-337. [PMID: 35085698 DOI: 10.1016/j.jconrel.2022.01.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 10/19/2022]
Abstract
Pancreatic islet transplantation is a promising strategy for the treatment of type I diabetes. High-mobility group box-1 (HMGB1), highly expressed in islet cells, is a potent immune stimulator in immune rejection. Heme oxygenase-1 (HO1) gene therapy can modulate the release of HMGB1 by altering intracellular molecules for successful cell transplantation. After delivery of the heme oxygenase-1 (HO1) gene to islet cells using an adeno-associated viral vector (AAV), it was evaluated the changes in cytoplasmic Ca2+ ions and calcineurin activity as well as histone acetyltransferase (HAT) and Poly(ADP) ribose polymerase-1 (PARP-1). Inhibition of HMGB1 release was evaluated through altering these intracellular molecules. Then, after transplantation of HO1-transduced islets, the therapeutic effect of them was evaluated through measuring blood glucose level to diabetic mice and through immunohistochemical analysis. The transduced HO1 gene significantly inhibited HMGB1 release in islets that was under the cell damage by hypoxia exposure. It was confirmed that this result was initially due to the decrease in cytoplasmic Ca2+ ion concentration and calcineurin activity. In addition, the delivered HO1 gene simultaneously reduced the activity of HAT and PARP-1, which are involved in the translocation of HMGB1 from the nucleus to the cytoplasm. As a result, when the HO1 gene-transduced islets were transplanted into diabetic mice, the treatment efficiency of diabetes was effectively improved by increasing the survival rate of the islets. Collectively, these results suggest that HO1 gene transfer can be used for successful islet transplantation by altering the activity of intracellular signal molecules and reducing HMGB1 release.
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Affiliation(s)
- Min Jun Kim
- Department of Bioengineering, College of Engineering, and BK FOUR Biopharmaceutical Innovation Leader for Education and Research Group, Hanyang University, Seoul 04763, Republic of Korea
| | - Yong Hwa Hwang
- Department of Bioengineering, College of Engineering, and BK FOUR Biopharmaceutical Innovation Leader for Education and Research Group, Hanyang University, Seoul 04763, Republic of Korea
| | - Jin Wook Hwang
- Department of Bioengineering, College of Engineering, and BK FOUR Biopharmaceutical Innovation Leader for Education and Research Group, Hanyang University, Seoul 04763, Republic of Korea
| | - Zahid Alam
- Department of Bioengineering, College of Engineering, and BK FOUR Biopharmaceutical Innovation Leader for Education and Research Group, Hanyang University, Seoul 04763, Republic of Korea
| | - Dong Yun Lee
- Department of Bioengineering, College of Engineering, and BK FOUR Biopharmaceutical Innovation Leader for Education and Research Group, Hanyang University, Seoul 04763, Republic of Korea; Institute of Nano Science & Technology (INST), Hanyang University, Seoul 04763, Republic of Korea; Elixir Pharmatech Inc., Seoul 04763, Republic of Korea.
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10
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Wang JL, Zhang L, Gao LX, Chen JL, Zhou T, Liu Y, Jiang FL. A bright, red-emitting water-soluble BODIPY fluorophore as an alternative to the commercial Mito Tracker Red for high-resolution mitochondrial imaging. J Mater Chem B 2021; 9:8639-8645. [PMID: 34585188 DOI: 10.1039/d1tb01585k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
With the emergence and rapid development of super-resolution fluorescence microscopy, monitoring of mitochondrial morphological changes has aroused great interest for exploring the role of mitochondria in the process of cell metabolism. However, in the absence of water-soluble, photostable and low-toxicity fluorescent dyes, ultra-high-resolution mitochondrial imaging is still challenging. Herein, we designed two fluorescent BODIPY dyes, namely Mito-BDP 630 and Mito-BDP 760, for mitochondrial imaging. The results proved that Mito-BDP 760 underwent aggregation-caused quenching (ACQ) in the aqueous matrix owing to its hydrophobicity and was inaccessible to the cells, which restricted its applications in mitochondrial imaging. In stark contrast, water-soluble Mito-BDP 630 readily penetrated cellular and mitochondrial membranes for mitochondrial imaging with high dye densities under wash-free conditions as driven by membrane potential. As a comparison, Mito Tracker Red presented high photobleaching (the fluorescence intensity dropped by nearly 50%) and high phototoxicity after irradiation by a laser for 30 min. However, Mito-BDP 630 possessed excellent biocompatibility, photostability and chemical stability. Furthermore, clear and bright mitochondria distribution in living HeLa cells after incubation with Mito-BDP 630 could be observed by CLSM. Convincingly, the morphology and cristae of mitochondria could be visualized using an ultra-high-resolution microscope. In short, Mito-BDP 630 provided a powerful and convenient tool for monitoring mitochondrial morphologies in living cells. Given the facile synthesis, photobleaching resistance and low phototoxicity of Mito-BDP 630, it is an alternative to the commercial Mito Tracker Red.
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Affiliation(s)
- Jiang-Lin Wang
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
| | - Lu Zhang
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
| | - Lian-Xun Gao
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
| | - Ji-Lei Chen
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
| | - Te Zhou
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, P. R. China.
| | - Yi Liu
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China. .,College of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Feng-Lei Jiang
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.
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11
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Meiotic Instability Generates a Pathological Condition in Mammalian Ovum. Stem Cell Rev Rep 2020; 17:777-784. [PMID: 33140233 DOI: 10.1007/s12015-020-10072-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/27/2020] [Indexed: 02/02/2023]
Abstract
Maintenance of metaphase-II (M-II) arrest in ovum is required to present itself as a right gamete for successful fertilization in mammals. Surprisingly, instability of meiotic cell cycle results in spontaneous exit from M-II arrest, chromosomal scattering and incomplete extrusion of second polar body (PB-II) without forming pronuclei so called abortive spontaneous ovum activation (SOA). It remains unclear what causes meiotic instability in freshly ovulated ovum that results in abortive SOA. We propose the involvement of various signal molecules such as reactive oxygen species (ROS), cyclic 3',5' adenosine monophosphate (cAMP) and calcium (Ca2+) in the induction of meiotic instability and thereby abortive SOA. These signal molecules through their downstream pathways modulate phosphorylation status and activity of cyclin dependent kinase (cdk1) as well as cyclin B1 level. Changes in phosphorylation status of cdk1 and its activity, dissociation and degradation of cyclin B1 destabilize maturation promoting factor (MPF). The premature MPF destabilization and defects in other cell cycle regulators possibly cause meiotic instability in ovum soon after ovulation. The meiotic instability results in a pathological condition of abortive SOA and deteriorates ovum quality. These ova are unfit for fertilization and limit reproductive outcome in several mammalian species including human. Therefore, global attention is required to identify the underlying causes in greater details in order to address the problem of meiotic instability in ova of several mammalian species icluding human. Moreover, these activated ova may be used to create parthenogenetic embryonic stem cell lines in vitro for the use in regenerative medicine.Graphical abstract.
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12
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Liu S, Yang R, Yin N, Faiola F. The short-chain perfluorinated compounds PFBS, PFHxS, PFBA and PFHxA, disrupt human mesenchymal stem cell self-renewal and adipogenic differentiation. J Environ Sci (China) 2020; 88:187-199. [PMID: 31862060 DOI: 10.1016/j.jes.2019.08.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 08/23/2019] [Accepted: 08/28/2019] [Indexed: 05/19/2023]
Abstract
Per- and polyfluorinated alkyl substances (PFASs) are commonly used in industrial processes and daily life products. Because they are persistent, they accumulate in the environment, wildlife and humans. Although many studies have focused on two of the most representative PFASs, PFOS and PFOA, the potential toxicity of short-chain PFASs has not yet been given sufficient attention. We used a battery of assays to evaluate the toxicity of several four-carbon and six-carbon perfluorinated sulfonates and carboxyl acids (PFBS, PFHxS, PFBA and PFHxA), with a human mesenchymal stem cell (hMSC) system. Our results demonstrate significant cyto- and potential developmental toxicity for all the compounds analyzed, with shared but also distinct mechanisms of toxicity. Moreover, the effects of PFBS and PFHxS were stronger than those of PFBA and PFHxA, but occurred at higher doses compared to PFOS or PFOA.
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Affiliation(s)
- Shuyu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Wellcome Trust/CRUK Gurdon Institute, Department of Pathology, University of Cambridge, Cambridge CB2 1QN, UK.
| | - Renjun Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nuoya Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Francesco Faiola
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
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13
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Wang L, Guo X, Guo X, Zhang X, Ren J. Decitabine promotes apoptosis in mesenchymal stromal cells isolated from patients with myelodysplastic syndromes by inducing reactive oxygen species generation. Eur J Pharmacol 2019; 863:172676. [PMID: 31542488 DOI: 10.1016/j.ejphar.2019.172676] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 09/11/2019] [Accepted: 09/18/2019] [Indexed: 10/26/2022]
Abstract
Myelodysplastic syndromes (MDSs) are a group of clonal disorders of hematopoietic stem cells, resulting in ineffective hematopoiesis. Previous studies have reported that decitabine (DAC) plays an essential role in cell cycle arrest and cell death induction in multiple cell types. Nevertheless, the effect of decitabine on mesenchymal stromal cells derived from bone marrow of patients with MDSs is not completely clarified. Here, we explored the apoptotic and anti-proliferative effect of DAC on MSCs isolated from patients with MDSs. Treatment with DAC inhibited cell growth in a concentration- and time-dependent manner by inducing apoptosis. We found a positive relationship between cell death triggered by DAC in MSCs and the death receptor family members Fas and FasL mRNA and protein levels (***P < 0.00085), cleaved caspase (-3, -8, and -9) activity, and mitochondrial membrane potential reduction. Additionally, DAC-induced apoptosis was inhibited by Kp7-6, a FasL/Fas antagonist, indicating a crucial role of FasL/Fas, a cell death receptor, in mediating the apoptotic effect of DAC. DAC also induced reactive oxygen species (ROS) generation in MSCs derived from MDSs patients (*P = 0.038). Furthermore, N-acetyl-L-cysteine (NAC), a widely accepted ROS scavenger, efficiently reversed DAC-induced apoptosis by inhibiting ROS generation (***P < 0.00051) in mitochondria and restoring mitochondrial membrane potential. Furthermore, ROS production was found to be a consequence of caspase activation via caspases inhibition. Our data imply that DAC triggers ROS production in human MSCs, which serves as a crucial factor for mitochondrial membrane potential reduction, and DAC induces cell death prior to FasL/Fas stimulation.
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Affiliation(s)
- Lihua Wang
- Department of Hematology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
| | - Xiaonan Guo
- Department of Hematology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
| | - Xiaoling Guo
- Department of Hematology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
| | - Xiaolei Zhang
- Department of Hematology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
| | - Jinhai Ren
- Department of Hematology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
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14
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Zhao H, Li T, Zhao Y, Tan T, Liu C, Liu Y, Chang L, Huang N, Li C, Fan Y, Yu Y, Li R, Qiao J. Single-Cell Transcriptomics of Human Oocytes: Environment-Driven Metabolic Competition and Compensatory Mechanisms During Oocyte Maturation. Antioxid Redox Signal 2019; 30:542-559. [PMID: 29486586 PMCID: PMC6338670 DOI: 10.1089/ars.2017.7151] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
AIMS The mechanisms coordinating maturation with an environment-driven metabolic shift, a critical step in determining the developmental potential of human in vitro maturation (IVM) oocytes, remain to be elucidated. Here we explored the key genes regulating human oocyte maturation using single-cell RNA sequencing and illuminated the compensatory mechanism from a metabolic perspective by analyzing gene expression. RESULTS Three key genes that encode CoA-related enzymes were screened from the RNA sequencing data. Two of them, ACAT1 and HADHA, were closely related to the regulation of substrate production in the Krebs cycle. Dysfunction of the Krebs cycle was induced by decreases in the activity of specific enzymes. Furthermore, the activator of these enzymes, the calcium concentration, was also decreased because of the failure of influx of exogenous calcium. Although release of endogenous calcium from the endoplasmic reticulum and mitochondria met the requirement for maturation, excessive release resulted in aneuploidy and developmental incompetence. High nicotinamide nucleotide transhydrogenase expression induced NADPH dehydrogenation to compensate for the NADH shortage resulting from the dysfunction of the Krebs cycle. Importantly, high NADP+ levels activated DPYD to enhance the repair of DNA double-strand breaks to maintain euploidy. INNOVATION The present study shows for the first time that exposure to the in vitro environment can lead to the decline of energy metabolism in human oocytes during maturation but that a compensatory action maintains their developmental competence. CONCLUSION In vitro maturation of human oocytes is mediated through a cascade of competing and compensatory actions driven by genes encoding enzymes.
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Affiliation(s)
- Hongcui Zhao
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Tianjie Li
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Yue Zhao
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Tao Tan
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China .,2 Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology , Kunming, China
| | - Changyu Liu
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Yali Liu
- 3 Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, China
| | - Liang Chang
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Ning Huang
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Chang Li
- 2 Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology , Kunming, China
| | - Yong Fan
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China .,3 Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, China
| | - Yang Yu
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Rong Li
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
| | - Jie Qiao
- 1 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China
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15
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Lan M, Tang X, Zhang J, Yao Z. Insights in pathogenesis of multiple sclerosis: nitric oxide may induce mitochondrial dysfunction of oligodendrocytes. Rev Neurosci 2018; 29:39-53. [PMID: 28822986 DOI: 10.1515/revneuro-2017-0033] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 06/15/2017] [Indexed: 01/01/2023]
Abstract
Demyelinating diseases, such as multiple sclerosis (MS), are kinds of common diseases in the central nervous system (CNS), and originated from myelin loss and axonal damage. Oligodendrocyte dysfunction is the direct reason of demyelinating lesions in the CNS. Nitric oxide (NO) plays an important role in the pathological process of demyelinating diseases. Although the neurotoxicity of NO is more likely mediated by peroxynitrite rather than NO itself, NO can impair oligodendrocyte energy metabolism through mediating the damaging of mitochondrial DNA, mitochondrial membrane and mitochondrial respiratory chain complexes. In the progression of MS, NO can mainly mediate demyelination, axonal degeneration and cell death. Hence, in this review, we extensively discuss endangerments of NO in oligodendrocytes (OLs), which is suggested to be the main mediator in demyelinating diseases, e.g. MS. We hypothesize that NO takes part in MS through impairing the function of monocarboxylate transporter 1, especially causing axonal degeneration. Then, it further provides a new insight that NO for OLs may be a reliable therapeutic target to ameliorate the course of demyelinating diseases.
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Affiliation(s)
- Minghong Lan
- Department of Physiology, Third Military Medical University, Chongqing 400038, China
| | - Xiaoyi Tang
- Department of Physiology, Third Military Medical University, Chongqing 400038, China
| | - Jie Zhang
- Department of Physiology, Third Military Medical University, Chongqing 400038, China
| | - Zhongxiang Yao
- Department of Physiology, Third Military Medical University, Chongqing 400038, China
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16
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Bossio C, Abdel Aziz I, Tullii G, Zucchetti E, Debellis D, Zangoli M, Di Maria F, Lanzani G, Antognazza MR. Photocatalytic Activity of Polymer Nanoparticles Modulates Intracellular Calcium Dynamics and Reactive Oxygen Species in HEK-293 Cells. Front Bioeng Biotechnol 2018; 6:114. [PMID: 30211158 PMCID: PMC6119808 DOI: 10.3389/fbioe.2018.00114] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 07/20/2018] [Indexed: 11/13/2022] Open
Abstract
Optical modulation of living cells activity by light-absorbing exogenous materials is gaining increasing interest, due to the possibility both to achieve high spatial and temporal resolution with a minimally invasive and reversible technique and to avoid the need of viral transfection with light-sensitive proteins. In this context, conjugated polymers represent ideal candidates for photo-transduction, due to their excellent optoelectronic and biocompatibility properties. In this work, we demonstrate that organic polymer nanoparticles, based on poly(3-hexylthiophene) conjugated polymer, establish a functional interaction with an in vitro cell model (Human Embryonic Kidney cells, HEK-293). They display photocatalytic activity in aqueous environment and, once internalized within the cell cytosol, efficiently generate reactive oxygen species (ROS) upon visible light excitation, without affecting cell viability. Interestingly, light-activated ROS generation deterministically triggers modulation of intracellular calcium ion flux, successfully controlled at the single cell level. In perspective, the capability of polymer NPs to produce ROS and to modulate Ca2+ dynamics by illumination on-demand, at non-toxic levels, may open the path to the study of biological processes with a gene-less approach and unprecedented spatio-temporal resolution, as well as to the development of new biotechnology tools for cell optical modulation.
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Affiliation(s)
- Caterina Bossio
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Milan, Italy
| | - Ilaria Abdel Aziz
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Milan, Italy
- Dipartimento di Fisica, Politecnico di Milano, Milan, Italy
| | - Gabriele Tullii
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Milan, Italy
- Dipartimento di Fisica, Politecnico di Milano, Milan, Italy
| | - Elena Zucchetti
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Milan, Italy
- Dipartimento di Fisica, Politecnico di Milano, Milan, Italy
| | - Doriana Debellis
- Electron Microscopy Facility, Istituto Italiano di Tecnologia, Genova, Italy
| | - Mattia Zangoli
- Institute for Organic Synthesis and Photoreactivity, CNR-ISOF, Bologna, Italy
| | - Francesca Di Maria
- Institute for Organic Synthesis and Photoreactivity, CNR-ISOF, Bologna, Italy
| | - Guglielmo Lanzani
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Milan, Italy
- Dipartimento di Fisica, Politecnico di Milano, Milan, Italy
| | - Maria Rosa Antognazza
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Milan, Italy
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17
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Xiao YF, Zeng ZX, Guan XH, Wang LF, Wang CJ, Shi H, Shou W, Deng KY, Xin HB. FKBP12.6 protects heart from AngII-induced hypertrophy through inhibiting Ca 2+ /calmodulin-mediated signalling pathways in vivo and in vitro. J Cell Mol Med 2018; 22:3638-3651. [PMID: 29682889 PMCID: PMC6010737 DOI: 10.1111/jcmm.13645] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 03/08/2018] [Indexed: 12/12/2022] Open
Abstract
We previously observed that disruption of FK506‐binding protein 12.6 (FKBP12.6) gene resulted in cardiac hypertrophy in male mice. Studies showed that overexpression of FKBP12.6 attenuated thoracic aortic constriction (TAC)‐induced cardiac hypertrophy in mice, whereas the adenovirus‐mediated overexpression of FKBP12.6 induced hypertrophy and apoptosis in cultured neonatal cardiomyocytes, indicating that the role of FKBP12.6 in cardiac hypertrophy is still controversial. In this study, we aimed to investigate the roles and mechanisms of FKBP12.6 in angiotensin II (AngII)‐induced cardiac hypertrophy using various transgenic mouse models in vivo and in vitro. FKBP12.6 knockout (FKBP12.6−/−) mice and cardiac‐specific FKBP12.6 overexpressing (FKBP12.6 TG) mice were infused with AngII (1500 ng/kg/min) for 14 days subcutaneously by implantation of an osmotic mini‐pump. The results showed that FKBP12.6 deficiency aggravated AngII‐induced cardiac hypertrophy, while cardiac‐specific overexpression of FKBP12.6 prevented hearts from the hypertrophic response to AngII stimulation in mice. Consistent with the results in vivo, overexpression of FKBP12.6 in H9c2 cells significantly repressed the AngII‐induced cardiomyocyte hypertrophy, seen as reductions in the cell sizes and the expressions of hypertrophic genes. Furthermore, we demonstrated that the protection of FKBP12.6 on AngII‐induced cardiac hypertrophy was involved in reducing the concentration of intracellular Ca2+ ([Ca2+]i), in which the protein significantly inhibited the key Ca2+/calmodulin‐dependent signalling pathways such as calcineurin/cardiac form of nuclear factor of activated T cells 4 (NFATc4), calmodulin kinaseII (CaMKII)/MEF‐2, AKT/Glycogen synthase kinase 3β (GSK3β)/NFATc4 and AKT/mTOR signalling pathways. Our study demonstrated that FKBP12.6 protects heart from AngII‐induced cardiac hypertrophy through inhibiting Ca2+/calmodulin‐mediated signalling pathways.
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Affiliation(s)
- Yun-Fei Xiao
- Institute of Translational Medicine, Nanchang University, Nanchang, China.,School of Life Science, Nanchang University, Nanchang, China
| | - Zhi-Xiong Zeng
- Institute of Translational Medicine, Nanchang University, Nanchang, China.,School of Life Science, Nanchang University, Nanchang, China
| | - Xiao-Hui Guan
- Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Ling-Fang Wang
- Institute of Translational Medicine, Nanchang University, Nanchang, China.,School of Life Science, Nanchang University, Nanchang, China
| | - Chan-Juan Wang
- Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Huidong Shi
- Georgia Cancer Center, Augusta University, Augusta, GA, USA
| | - Weinian Shou
- Riley Heart Research Center, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Ke-Yu Deng
- Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Hong-Bo Xin
- Institute of Translational Medicine, Nanchang University, Nanchang, China.,School of Life Science, Nanchang University, Nanchang, China
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18
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Sun Y, Wang C, Wang L, Dai Z, Yang K. Arsenic trioxide induces apoptosis and the formation of reactive oxygen species in rat glioma cells. Cell Mol Biol Lett 2018; 23:13. [PMID: 29610575 PMCID: PMC5870496 DOI: 10.1186/s11658-018-0074-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 02/08/2018] [Indexed: 02/06/2023] Open
Abstract
Background Arsenic trioxide (As2O3) has a dramatic therapeutic effect on acute promyelocytic leukemia (APL) patients. It can also cause apoptosis in various tumor cells. This study investigated whether As2O3 has an antitumor effect on glioma and explored the underlying mechanism. Results MTT and trypan blue assays showed that As2O3 remarkably inhibited growth of C6 and 9 L glioma cells. Cell viability decreased in glioma cells to a greater extent than in normal glia cells. The annexin V-FITC/PI and Hoechest/PI staining assays revealed a significant increase in apoptosis that correlated with the duration of As2O3 treatment and occurred in glioma cells to a greater extent than in normal glial cells. As2O3 treatment induced reactive oxygen species (ROS) production in C6 and 9 L cells in a time-dependent manner. Cells pretreated with the antioxidant N-acetylcysteine (NAC) showed significantly lower As2O3-induced ROS generation. As2O3 significantly inhibited the expression of the anti-apoptotic gene Bcl-2, and upregulated the proapoptotic gene Bax in both C6 and 9 L glioma cells in a time-dependent manner. Conclusions As2O3 can significantly inhibit the growth of glioma cells and it can induce cell apoptosis in a time- and concentration-dependent manner. ROS were found to be responsible for apoptosis in glioma cells induced by As2O3. These results suggest As2O3 is a promising agent for the treatment of glioma.
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Affiliation(s)
- Yuanyuan Sun
- 1Nursing Support Center, First Affiliated Hospital, Harbin Medical University, Harbin, 150000 China
| | - Chen Wang
- 2Neurosurgery Department, First Affiliated Hospital, Harbin Medical University, Nangang District, Harbin, 150000 China
| | - Ligang Wang
- 2Neurosurgery Department, First Affiliated Hospital, Harbin Medical University, Nangang District, Harbin, 150000 China
| | - Zhibo Dai
- 2Neurosurgery Department, First Affiliated Hospital, Harbin Medical University, Nangang District, Harbin, 150000 China
| | - Kongbin Yang
- 2Neurosurgery Department, First Affiliated Hospital, Harbin Medical University, Nangang District, Harbin, 150000 China
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19
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Chaicharoenaudomrung N, Jaroonwitchawan T, Noisa P. Cordycepin induces apoptotic cell death of human brain cancer through the modulation of autophagy. Toxicol In Vitro 2017; 46:113-121. [PMID: 28987792 DOI: 10.1016/j.tiv.2017.10.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 08/09/2017] [Accepted: 10/02/2017] [Indexed: 01/19/2023]
Abstract
Brain cancer, in particular neuroblastoma and glioblastoma, is a global challenge to human health. Cordycepin, extracted from Cordyceps ssp., has been revealed as a strong anticancer agent through several ways; however, the mechanism, by which cordycepin counteracts brain cancers, is still poorly understood. In this study, the underlying mechanisms of cordycepin against human brain cancer cells were explored. SH-SY5Y and U251 cells were being a model to represent human neuroblastoma and glioblastoma, respectively. Here, it was found that cordycepin inhibited cell growth, and induced apoptosis in a dose-dependent manner in both SH-SY5Y and U-251 cell lines. The expression of pro-apoptotic genes, including P53, BAX, Caspase-3, and Caspase-9, were upregulated, whereas the expression of anti-apoptotic gene, BCL-2, was suppressed. Besides, cordycepin induced the generation of reactive oxygen species (ROS) along with the suppression of antioxidant genes, including GPX, SOD, and Catalase. Importantly, cordycepin was shown to involve in the activation of autophagy, which was evidenced by the increment of LC3I/II. The combination of cordycepin with chloroquine, an autophagy inhibitor, further inhibited the growth, and enhanced the death of brain cancer cells. Altogether, this finding suggested that cordycepin induced apoptosis of human brain cancer cells through mitochondrial-mediated intrinsic pathway and the modulation of autophagy. Therefore, cordycepin could be a promising candidate for the development of anticancer drugs targeting human brain cancers.
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Affiliation(s)
- Nipha Chaicharoenaudomrung
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Nakhon Ratchasima 30000, Thailand
| | - Thiranut Jaroonwitchawan
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Nakhon Ratchasima 30000, Thailand
| | - Parinya Noisa
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Nakhon Ratchasima 30000, Thailand.
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20
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Effect of nitric oxide to axonal degeneration in multiple sclerosis via downregulating monocarboxylate transporter 1 in oligodendrocytes. Nitric Oxide 2017; 67:75-80. [PMID: 28392448 DOI: 10.1016/j.niox.2017.04.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 04/05/2017] [Accepted: 04/05/2017] [Indexed: 12/21/2022]
Abstract
Multiple sclerosis (MS) is a neurodegenerative disease of the central nervous system (CNS). Axonal degeneration, one of the main pathological characteristics of MS, is affected by nitric oxide (NO). In turn, NO induces mitochondrial dysfunction of neurons and glial cells. Inadequate glucose causes monocarboxylate transporter 1 (MCT1) to transfer lactate from oligodendrocytes (OLs) to neurons, which decreases MCT1 and results in energy substrate deficit (mainly lactate) in axons. The condition gradually leads to axonal degeneration. This study proposes that NO-induced MCT1 down-regulation in OLs may be involved in the pathological process of axonal degeneration, which eventually leads to MS.
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21
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Bollimuntha S, Pani B, Singh BB. Neurological and Motor Disorders: Neuronal Store-Operated Ca 2+ Signaling: An Overview and Its Function. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 993:535-556. [PMID: 28900932 PMCID: PMC5821072 DOI: 10.1007/978-3-319-57732-6_27] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Calcium (Ca2+) is a ubiquitous second messenger that performs significant physiological task such as neurosecretion, exocytosis, neuronal growth/differentiation, and the development and/or maintenance of neural circuits. An important regulatory aspect of neuronal Ca2+ homeostasis is store-operated Ca2+ entry (SOCE) which, in recent years, has gained much attention for influencing a variety of nerve cell responses. Essentially, activation of SOCE ensues following the activation of the plasma membrane (PM) store-operated Ca2+ channels (SOCC) triggered by the depletion of endoplasmic reticulum (ER) Ca2+ stores. In addition to the TRPC (transient receptor potential canonical) and the Orai family of ion channels, STIM (stromal interacting molecule) proteins have been baptized as key molecular regulators of SOCE. Functional significance of the TRPC channels in neurons has been elaborately studied; however, information on Orai and STIM components of SOCE, although seems imminent, is currently limited. Importantly, perturbations in SOCE have been implicated in a spectrum of neuropathological conditions. Hence, understanding the precise involvement of SOCC in neurodegeneration would presumably unveil avenues for plausible therapeutic interventions. We thus review the role of SOCE-regulated neuronal Ca2+ signaling in selecting neurodegenerative conditions.
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Affiliation(s)
- Sunitha Bollimuntha
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, 58202, USA.
| | - Biswaranjan Pani
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, 58202, USA
| | - Brij B Singh
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, 58202, USA.
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22
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Kim HB, Yoo BS. Propolis Inhibits UVA-Induced Apoptosis of Human Keratinocyte HaCaT Cells by Scavenging ROS. Toxicol Res 2016; 32:345-351. [PMID: 27818737 PMCID: PMC5080852 DOI: 10.5487/tr.2016.32.4.345] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 07/11/2016] [Accepted: 07/26/2016] [Indexed: 12/13/2022] Open
Abstract
Propolis is a resinous material collected by honeybees from several plant sources. This research aimed at showing its protective effect against UVA-induced apoptosis of human keratinocyte HaCaT cells. Using Hoechst staining, it was demonstrated that propolis (5 and 10 μg/mL) significantly inhibited the apoptosis of HaCaT cells induced by UVA-irradiation. Propolis also showed the protective effect against loss of mitochondrial membrane potential induced by UVA-irradiaiton in HaCaT cells. Propolis also inhibited the expression of activated caspase-3 induced by UVA-irradiation. To investigate the role of ROS in UVA-induced apoptosis and protection by propolis, the generation of ROS was determined in cells. The results showed that the generation of ROS was markedly reduced in cells pretreated with propolis. Consequently, propolis protected human keratinocyte HaCaT cells against UVA-induced apoptosis, which might be related to the reduction of ROS generation by UVA-irradiation.
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Affiliation(s)
- Han Bit Kim
- Department of Life Science, Kyonggi University, Suwon, Korea
| | - Byung Sun Yoo
- Department of Life Science, Kyonggi University, Suwon, Korea
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23
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Kawase T, Okuda K, Nagata M, Tsuchimochi M, Yoshie H, Nakata K. Non-invasive, quantitative assessment of the morphology of γ-irradiated human mesenchymal stem cells and periosteal cells using digital holographic microscopy. Int J Radiat Biol 2016; 92:796-805. [PMID: 27586164 DOI: 10.1080/09553002.2016.1230242] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
PURPOSE To assure the quality of cells to be used in cell therapy, we examined the applicability of digital holographic microscopy (DHM) for non-invasive, quantitative assessment of changes in cell morphology. MATERIALS AND METHODS Mesenchymal stem cells derived from adipose tissue (MSC-AT) and bone marrow (MSC-BM), in addition to human alveolar periosteal cells (PC) as a reference, were γ-ray irradiated (1 and 4 Gy), and their morphological changes were quantified without fixation using holographic microscopy. After detachment and fixation with ethanol, cell number and surface antigen expression were determined using an automated cell counter kit and flow-cytometry, respectively. RESULTS Among various indexes, only indexes related to cell size were significantly changed after γ-irradiation. Both BMC-AT and BMC-BM were enlarged and more sensitive to a low dose of γ-irradiation than PC. In contrast to PC, proteins related to DNA damage repair (γ-H2AX, p21waf1, p53 and Rb) were not substantially upregulated or sustained for a week in either MSC-AT or MSC-BM. CONCLUSION Instead of DNA damage markers, we suggest that cell morphological parameters (e.g. cell volume) that are monitored by DHM could be a useful and more stable marker of MSC quality.
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Affiliation(s)
- Tomoyuki Kawase
- a Division of Oral Bioengineering, Institute of Medicine and Dentistry, Niigata University, Niigata, Japan
| | - Kazuhiro Okuda
- b Division of Periodontology, Institute of Medicine and Dentistry, Niigata University, Niigata, Japan
| | - Masaki Nagata
- c Division of Oral and Maxillofacial Surgery , Institute of Medicine and Dentistry, Niigata University , Niigata , Japan
| | - Makoto Tsuchimochi
- d Department of Oral and Maxillofacial Radiology , The Nippon Dental University School of Life Dentistry at Niigata , Niigata , Japan
| | - Hiromasa Yoshie
- b Division of Periodontology, Institute of Medicine and Dentistry, Niigata University, Niigata, Japan
| | - Koh Nakata
- e Bioscience Medical Research Center, Niigata University Medical and Dental Hospital , Niigata , Japan
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Chen YG, Yue HT, Zhang ZZ, Yuan FH, Bi HT, Yuan K, Weng SP, He JG, Chen YH. Identification and characterization of a mitochondrial unfolded protein response transcription factor ATFS-1 in Litopenaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2016; 54:144-152. [PMID: 26481519 DOI: 10.1016/j.fsi.2015.10.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 10/11/2015] [Accepted: 10/12/2015] [Indexed: 06/05/2023]
Abstract
A mitochondrial specific stress response termed mitochondrial unfolded protein response (UPR(mt)) is activated in responding to disturbance of protein homeostasis in mitochondria. The activating transcription factor associated with stress-1 (designated as ATFS-1) is the key regulator of UPR(mt). To investigating the roles of ATFS-1 (LvATFS-1) in Litopenaeus vannamei mitochondrial stress remission and immunity, it's full length cDNA was cloned. The open reading frame of LvATFS-1 was 1, 557 bp in length, deducing to a 268 amino acids protein. LvATFS-1 was highly expressed in muscle, hemocytes and eyestalk. Subcellular location assays showed that N-terminal of LvATFS-1 contained a mitochondrial targeting sequence, which could directed the fused EGFP located to mitochondria. And the C-terminal of LvATFS-1, which had a nuclear localization signal, expressed in nucleus. The in vitro experiments verified that LvATFS-1 could reduced the level of intracellular reactive oxygen species (ROS). And results of real-time RT-PCR indicated that LvATFS-1 might scavenge excess ROS via ROS-eliminating genes regulation. Reporter gene assays showed that LvATFS-1 could upregulated the expression of the antimicrobial peptide genes in Drosophila Schneider 2 cells. Results of real-time RT-PCR showed that Vibrio alginolyticus or white spot syndrome virus (WSSV) infection induced the expression of LvATFS-1. And knocked-down LvATFS-1 by RNAi resulted in a higher cumulative mortality of L. vannamei upon V. alginolyticus or WSSV infection. These results suggested that LvATFS-1 not only rolled in mitochondrial specific stress responding, but also important for L. vannamei immunologic defence.
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Affiliation(s)
- Yong-Gui Chen
- Key Laboratory of Marine Resources and Coastal Engineering in Guangdong Province, School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; State Key Laboratory for Biocontrol, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China
| | - Hai-Tao Yue
- School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; State Key Laboratory for Biocontrol, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China
| | - Ze-Zhi Zhang
- School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; State Key Laboratory for Biocontrol, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China
| | - Feng-Hua Yuan
- School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; State Key Laboratory for Biocontrol, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China
| | - Hai-Tao Bi
- School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; State Key Laboratory for Biocontrol, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China
| | - Kai Yuan
- School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; State Key Laboratory for Biocontrol, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China
| | - Shao-Ping Weng
- School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; State Key Laboratory for Biocontrol, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China
| | - Jian-Guo He
- Key Laboratory of Marine Resources and Coastal Engineering in Guangdong Province, School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; School of Life Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; State Key Laboratory for Biocontrol, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China
| | - Yi-Hong Chen
- Key Laboratory of Marine Resources and Coastal Engineering in Guangdong Province, School of Marine Sciences, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China; State Key Laboratory for Biocontrol, Sun Yat-sen University, 135 Xingang Road West, Guangzhou, 510275, PR China.
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25
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Zhang HF, Wang KH. Relationship between mutations of mitochondrial DNA control region and tumors. Shijie Huaren Xiaohua Zazhi 2016; 24:2676-2681. [DOI: 10.11569/wcjd.v24.i17.2676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The mitochondrion is the main place of cell respiration and participates in the process of cell apoptosis and proliferation, nucleic acid synthesis, and the production of free radicals. Mitochondrial DNA (mtDNA) is susceptible to the attack by oxygen free radicals and their products, and tends to develop somatic mutations, because of the lack of protection by histones and complete repair system. Somatic mutations in mtDNA will finally promote tumorigenesis. The control region of mtDNA is a region with a high mutation frequency. The association between control region mutations and tumorigenesis has attracted wide attention. Therefore, it is of great significance to elucidate the relationship between mtDNA control region mutations and tumorigenesis.
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Morrissette KM, Paradis NA. Should reperfusion be revisited? Am J Emerg Med 2016; 34:1086-7. [DOI: 10.1016/j.ajem.2016.02.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 02/27/2016] [Indexed: 10/22/2022] Open
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Hashimoto H, Arai K, Hayashi S, Okamoto H, Takahashi J, Chikuda M. The effect of astaxanthin on vascular endothelial growth factor (VEGF) levels and peroxidation reactions in the aqueous humor. J Clin Biochem Nutr 2016; 59:10-5. [PMID: 27499573 PMCID: PMC4933686 DOI: 10.3164/jcbn.15-137] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 01/26/2016] [Indexed: 11/22/2022] Open
Abstract
We explored the effect of astaxanthin on vascular endothelial growth factor in the aqueous humor, by measuring vascular endothelial growth factor levels and oxidation-related parameters, including O2•− scavenging activity, H2O2 level, and total hydroperoxide level in the aqueous humor, obtained from 35 patients before and after astaxanthin administration. We evaluated the relationship between vascular endothelial growth factor and the oxidation-related parameters as well as the patient’s diabetic status, age, and sex. Vascular endothelial growth factor levels did not change significantly but O2•− scavenging activity and total hydroperoxide level significantly (p<0.05) increased and decreased, respectively. Both pre- and post- astaxanthin intake, vascular endothelial growth factor and total hydroperoxide levels were positively correlated (Pearson: r = 0.42, p<0.05; r = 0.55, p<0.01, respectively). Analysis of vascular endothelial growth factor levels and O2•− scavenging activities gave a negative correlation but only pre-astaxanthin intake (r = −0.37, p<0.05). Differences in levels pre- and post-astaxanthin only showed association between vascular endothelial growth factor and total hydroperoxide (r = 0.49, p<0.01) analyzed by multiple linear regression. Using multivariate analysis, pre-astaxanthin vascular endothelial growth factor level was associated with two factors of total hydroperoxide and O2•− scavenging activity (r = 0.49, p<0.05), and post-astaxanthin vascular endothelial growth factor level with two factors of total hydroperoxide and sex (r = 0.60, p<0.01). Astaxanthin intake may have affected vascular endothelial growth factor level through its antioxidant effects by increasing O2•− scavenging activity and suppressing peroxide production.
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Affiliation(s)
- Hirotaka Hashimoto
- Tsukuba Hashimoto Optical Clinic, 530 Furuku, Tsukuba, Ibaraki 305-0021, Japan; Department of Ophthalmology, Koshigaya Hospital, Dokkyo University School of Medicine, 2-1-50 Minamikoshigaya, Saitama 343-8555, Japan
| | - Kiyomi Arai
- Department of Ophthalmology, Koshigaya Hospital, Dokkyo University School of Medicine, 2-1-50 Minamikoshigaya, Saitama 343-8555, Japan
| | - Shimmin Hayashi
- Department of Ophthalmology, Koshigaya Hospital, Dokkyo University School of Medicine, 2-1-50 Minamikoshigaya, Saitama 343-8555, Japan; Lively Eye Clinic, 3-1-4 Asahi-cho, Souka-shi, Saitama 340-0053, Japan
| | - Hiroyuki Okamoto
- Embassy of Japan in Jordan, No. 7, Fa'eq Halazon St. Between 5th and 6th Circle, North Abdoun, Amman 11181, Jordan
| | - Jiro Takahashi
- Fuji Chemical Industry Co., LTD., 55 Yokohoonji, Kamiichi-machi, Nakaniikawa-gun, Toyama 930-0397, Japan
| | - Makoto Chikuda
- Department of Ophthalmology, Koshigaya Hospital, Dokkyo University School of Medicine, 2-1-50 Minamikoshigaya, Saitama 343-8555, Japan
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Organic two-photon nanoparticles modulate reactive oxygen species, intracellular calcium concentration, and mitochondrial membrane potential during apoptosis of human gastric carcinoma SGC-7901 cells. Biotechnol Lett 2016; 38:1269-76. [DOI: 10.1007/s10529-016-2105-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Accepted: 04/06/2016] [Indexed: 10/22/2022]
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29
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Premkumar KV, Chaube SK. Increased level of reactive oxygen species persuades postovulatory aging-mediated spontaneous egg activation in rat eggs cultured in vitro. In Vitro Cell Dev Biol Anim 2016; 52:576-88. [PMID: 26896066 DOI: 10.1007/s11626-016-0007-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 01/25/2016] [Indexed: 11/29/2022]
Abstract
The present study was aimed to find out whether increased level of reactive oxygen species (ROS) particularity hydrogen peroxide (H2O2) could persuade postovulatory aging-mediated abortive spontaneous egg activation (SEA) in rat eggs cultured in vitro. For this purpose, ROS and H2O2 levels, mitochondria distribution and its membrane potential, p286-CaMK-II, Emi2, Thr-161 phophorylated cyclin-dependent protein kinase1 (Cdk1) as well as cyclin B1 levels, in vitro effects of 3-tert-butyl-4 hydroxy anisole (BHA), pentoxifylline and dibutyryl-adenosine 3',5'-cyclic monophosphate (db-cAMP) were analyzed during postovulatory aging-induced abortive SEA in vitro. Data of the present study suggest that postovulatory aging increased H2O2 levels, disturbed mitochondrial distribution pattern and mitochondrial membrane potential (MMP) in eggs. There was an significant increase of p286-CaMK-II level, while Emi2 level reduced significantly during egg aging in vitro. The reduced Emi2 level was associated with decreased Thr-161 phosphorylated cyclin-dependent kinase-1 (Cdk1) as well as cyclin B1 level in aged eggs that underwent abortive SEA. Further, supplementation of pentoxifylline, db-cAMP, and BHA protected postovulatory aging-mediated abortive SEA in concentration-dependent manner. These data suggest that postovulatory aging increased H2O2 levels, reduced MMP, and increased p286-CaMK-II. The increased p286-CaMK-II was associated with reduced Emi2 level and maturation-promoting factor levels during postovulatory aging-mediated abortive SEA. Drugs that elevate cAMP directly or indirectly and BHA protected postovulatory aging-mediated abortive SEA possibly by reducing ROS level in rat eggs cultured in vitro.
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Affiliation(s)
- Karuppanan V Premkumar
- Cell Physiology Laboratory, Department of Zoology, Centre of Advanced Study, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Centre of Advanced Study, Banaras Hindu University, Varanasi, 221005, UP, India.
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30
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Kayama Y, Raaz U, Jagger A, Adam M, Schellinger IN, Sakamoto M, Suzuki H, Toyama K, Spin JM, Tsao PS. Diabetic Cardiovascular Disease Induced by Oxidative Stress. Int J Mol Sci 2015; 16:25234-63. [PMID: 26512646 PMCID: PMC4632800 DOI: 10.3390/ijms161025234] [Citation(s) in RCA: 264] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 09/30/2015] [Accepted: 09/30/2015] [Indexed: 01/10/2023] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of morbidity and mortality among patients with diabetes mellitus (DM). DM can lead to multiple cardiovascular complications, including coronary artery disease (CAD), cardiac hypertrophy, and heart failure (HF). HF represents one of the most common causes of death in patients with DM and results from DM-induced CAD and diabetic cardiomyopathy. Oxidative stress is closely associated with the pathogenesis of DM and results from overproduction of reactive oxygen species (ROS). ROS overproduction is associated with hyperglycemia and metabolic disorders, such as impaired antioxidant function in conjunction with impaired antioxidant activity. Long-term exposure to oxidative stress in DM induces chronic inflammation and fibrosis in a range of tissues, leading to formation and progression of disease states in these tissues. Indeed, markers for oxidative stress are overexpressed in patients with DM, suggesting that increased ROS may be primarily responsible for the development of diabetic complications. Therefore, an understanding of the pathophysiological mechanisms mediated by oxidative stress is crucial to the prevention and treatment of diabetes-induced CVD. The current review focuses on the relationship between diabetes-induced CVD and oxidative stress, while highlighting the latest insights into this relationship from findings on diabetic heart and vascular disease.
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Affiliation(s)
- Yosuke Kayama
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA.
- VA Palo Alto Health Care System, Palo Alto, CA 94304, USA.
| | - Uwe Raaz
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA.
- VA Palo Alto Health Care System, Palo Alto, CA 94304, USA.
| | - Ann Jagger
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA.
- VA Palo Alto Health Care System, Palo Alto, CA 94304, USA.
| | - Matti Adam
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA.
- VA Palo Alto Health Care System, Palo Alto, CA 94304, USA.
| | - Isabel N Schellinger
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA.
- VA Palo Alto Health Care System, Palo Alto, CA 94304, USA.
| | - Masaya Sakamoto
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minatoku, Tokyo 105-0003, Japan.
| | - Hirofumi Suzuki
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minatoku, Tokyo 105-0003, Japan.
| | - Kensuke Toyama
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA.
- VA Palo Alto Health Care System, Palo Alto, CA 94304, USA.
| | - Joshua M Spin
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA.
- VA Palo Alto Health Care System, Palo Alto, CA 94304, USA.
| | - Philip S Tsao
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford University, Stanford, CA 94305, USA.
- VA Palo Alto Health Care System, Palo Alto, CA 94304, USA.
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Wang Y, Sun Z, Chen S, Jiao Y, Bai C. ROS-mediated activation of JNK/p38 contributes partially to the pro-apoptotic effect of ajoene on cells of lung adenocarcinoma. Tumour Biol 2015; 37:3727-38. [DOI: 10.1007/s13277-015-4181-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 10/01/2015] [Indexed: 10/22/2022] Open
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Yamaguchi T, Yoneyama M, Hinoi E, Ogita K. Involvement of calpain in 4-hydroxynonenal-induced disruption of gap junction-mediated intercellular communication among fibrocytes in primary cultures derived from the cochlear spiral ligament. J Pharmacol Sci 2015; 129:127-34. [PMID: 26499182 DOI: 10.1016/j.jphs.2015.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/24/2015] [Accepted: 09/27/2015] [Indexed: 11/20/2022] Open
Abstract
The endocochlear potential in the inner ear is essential for hearing ability, and maintained by various K(+) transport apparatuses including Na(+), K(+)-ATPase and gap junction-mediated intercellular communication (GJ-IC) in the lateral wall structures of the cochlea. Noise-induced hearing loss is known at least in part due to disruption of GJ-IC resulting from an oxidative stress-induced decrease in connexins (Cxs) level in the lateral wall structures. The purpose of this study was to investigate, using primary cultures of fibrocytes from the cochlear spiral ligament of mice, the mechanism underlying GJ-IC disruption induced by 4-hydroxynonenal (4-HNE), which is formed as a mediator of oxidative stress. An exposure to 4-HNE produced the following events: i.e., an increase in 4-HNE-adducted proteins; a decrease in the protein levels of Cx43, β-catenin, and Cx43/β-catenin complex along with intracellular translocation of this complex from the cell membrane to the cytoplasm; enhanced calpain-dependent degradation of endogenous α-fodrin; and disruption of GJ-IC. The 4-HNE-induced decrease in these protein levels and disruption of GJ-IC were most completely abolished by the calpain inhibitor PD150606. Taken together, our data suggest that 4-HNE disrupted GJ-IC through calpain-mediated degradation of Cx43 and β-catenin in primary cultures of fibrocytes derived from the cochlear spiral ligament.
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Affiliation(s)
- Taro Yamaguchi
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, Hirakata, Osaka 573-0101, Japan; Laboratory of Molecular Pharmacology, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-0934, Japan
| | - Masanori Yoneyama
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, Hirakata, Osaka 573-0101, Japan
| | - Eiichi Hinoi
- Laboratory of Molecular Pharmacology, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-0934, Japan
| | - Kiyokazu Ogita
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, Hirakata, Osaka 573-0101, Japan.
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Zhang D, Ren L, Chen GQ, Zhang J, Reed BM, Shen XH. ROS-induced oxidative stress and apoptosis-like event directly affect the cell viability of cryopreserved embryogenic callus in Agapanthus praecox. PLANT CELL REPORTS 2015; 34:1499-513. [PMID: 26104871 DOI: 10.1007/s00299-015-1802-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 04/10/2015] [Accepted: 05/06/2015] [Indexed: 05/09/2023]
Abstract
Oxidative stress and apoptosis-like programmed cell death, induced in part by H 2 O 2 , are two key factors that damage cells during plant cryopreservation. Their inhibition can improve cell viability. We hypothesized that oxidative stress and apoptosis-like event induced by ROS seriously impact plant cell viability during cryopreservation. This study documented changes in cell morphology and ultrastructure, and detected dynamic changes in ROS components (O 2 (·-) , H2O2 and OH·), antioxidant systems, and programmed cell death (PCD) events during embryonic callus cryopreservation of Agapanthus praecox. Plasmolysis, organelle ultrastructure changes, and increases in malondialdehyde (a membrane lipid peroxidation product) suggested that oxidative damage and PCD events occurred at several early cryopreservation steps. PCD events including autophagy, apoptosis-like, and necrosis also occurred at later stages of cryopreservation, and most were apoptosis. H2O2 is the most important ROS molecule mediating oxidative damage and affecting cell viability, and catalase and AsA-GSH cycle are involved in scavenging the intracellular H2O2 and protecting the cells against stress damage in the whole process. Gene expression studies verified changes of antioxidant system and PCD-related genes at the main steps of the cryopreservation process that correlated with improved cell viability. Reducing oxidative stress or inhibition of apoptosis-like event by deactivating proteases improved cryopreserved cell viability from 49.14 to 86.85 % and 89.91 %, respectively. These results verify our model of ROS-induced oxidative stress and apoptosis-like event in plant cryopreservation. This study provided a novel insight into cell stress response mechanisms in cryopreservation.
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Affiliation(s)
- Di Zhang
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, No. 800, Rd. Dong Chuan, Shanghai, People's Republic of China
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Yang FR, Li Y, Zhang XH, Wang M, Guo HR, Ruan WJ. Anticancer effect and mechanism of a Se-modified porphyrin Au(III) complex. Bioorg Med Chem Lett 2015; 25:3592-6. [PMID: 26152428 DOI: 10.1016/j.bmcl.2015.06.075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/17/2015] [Accepted: 06/20/2015] [Indexed: 10/23/2022]
Abstract
Au, Se and porphyrin are widely used components in the design of anticancer drugs, but their combination has never been referred to. In this work, a Se-modified porphyrin Au(III) complex, [AuTPP-Se]Cl, was designed and synthesized as a potential anticancer agent. This compound exhibits remarkable antiproliferative activity on all the six tested cancer cells. Its potency on HepG2 is even ten times higher than that of CDDP. The synergistic action among Au, Se and porphyrin components was validated. Mechanism study showed that both the induction of mitochondria-dependent apoptosis and the arrest of cell cycle contribute to the anticancer activity of [AuTPP-Se]Cl.
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Affiliation(s)
- Feng-Rui Yang
- Department of Pharmacology, Tianjin Medical University, No. 22 of Qixiangtai Road, Tianjin 300070, China
| | - Yue Li
- Department of Chemistry, Nankai University, No. 94 of Weijin Road, Tianjin 300071, China
| | - Xiao-Hong Zhang
- Department of Chemistry, Nankai University, No. 94 of Weijin Road, Tianjin 300071, China
| | - Meng Wang
- Department of Pharmacology, Tianjin Medical University, No. 22 of Qixiangtai Road, Tianjin 300070, China
| | - Hong-Rui Guo
- Department of Chemistry, Nankai University, No. 94 of Weijin Road, Tianjin 300071, China
| | - Wen-Juan Ruan
- Department of Chemistry, Nankai University, No. 94 of Weijin Road, Tianjin 300071, China.
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35
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Nazima B, Manoharan V, Miltonprabu S. Grape seed proanthocyanidins ameliorates cadmium-induced renal injury and oxidative stress in experimental rats through the up-regulation of nuclear related factor 2 and antioxidant responsive elements. Biochem Cell Biol 2015; 93:210-26. [DOI: 10.1139/bcb-2014-0114] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Cadmium (Cd) preferentially accumulates in the kidney, the major target for Cd-related toxicity. Cd-induced reactive oxygen species (ROS) have been considered crucial mediators for renal injury. The biologically significant ionic form of cadmium (Cd+) binds to many bio-molecules, and these interactions underlie the toxicity mechanisms of Cd. The present study was hypothesized to explore the protective effect of grape seed proanthocyanidins (GSP) on Cd-induced renal toxicity and to elucidate the potential mechanism. Male Wistar rats were treated with Cd as cadmium chloride (CdCl2, 5 mg·kg−1 bw, orally) and orally pre-administered with GSP (100 mg·kg−1 bw) 90 min before Cd intoxication for 4 weeks to evaluate renal damage of Cd and antioxidant potential of GSP. Serum renal function parameters (blood urea nitrogen and creatinine) levels in serum and urine, renal oxidative stress (lipid peroxidation, protein carbonylation, enzymatic, and non-enzymatic antioxidants), inflammatory (NF-κB p65, NO, TNF-α, IL-6), apoptotic (caspase-3, caspase-9, Bax, Bcl-2), membrane bound ATPases, and Nrf2 (HO-1, keap1, γ-GCS, and μ-GST) markers were evaluated in Cd-treated rats. Pretreatment with GSP revealed a significant improvement in renal oxidative stress markers in kidneys of Cd-treated rats. In addition, GSP treatment decreases the amount of iNOS, NF-κB, TNF-α, caspase-3, and Bax and increases the levels Bcl-2 protein expression. Similarly, mRNA and protein analyses substantiated that GSP treatment notably normalizes the renal expression of Nrf2/Keap1 and its downstream regulatory proteins in the Cd-treated rats. Histopathological and ultra-structural observations also demonstrated that GSP effectively protects the kidney from Cd-induced oxidative damage. These findings suggest that GSP ameliorates renal dysfunction and oxidative stress through the activation of Nrf2 pathway in Cd-intoxicated rats.
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Affiliation(s)
- Bashir Nazima
- Department of Zoology, Faculty of Science, Annamalai University, Annamalainagar 608002, Tamilnadu, India
- Department of Zoology, Faculty of Science, Annamalai University, Annamalainagar 608002, Tamilnadu, India
| | - Vaihundam Manoharan
- Department of Zoology, Faculty of Science, Annamalai University, Annamalainagar 608002, Tamilnadu, India
- Department of Zoology, Faculty of Science, Annamalai University, Annamalainagar 608002, Tamilnadu, India
| | - Selvaraj Miltonprabu
- Department of Zoology, Faculty of Science, Annamalai University, Annamalainagar 608002, Tamilnadu, India
- Department of Zoology, Faculty of Science, Annamalai University, Annamalainagar 608002, Tamilnadu, India
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36
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Liu M, Liu Y, Cheng Z, Liu J, Chai T. Effects of chromic chloride on chick embryo fibroblast viability. Toxicol Rep 2015; 2:555-562. [PMID: 28962390 PMCID: PMC5598472 DOI: 10.1016/j.toxrep.2015.03.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 03/08/2015] [Accepted: 03/11/2015] [Indexed: 11/16/2022] Open
Abstract
The objective of this study is to evaluate the effects of chromic chloride (CrCl3) on chick embryo fibroblast (CEF) viability. The cells were incubated with CrCl3 (0.02, 0.1, 0.5, 2.5, 12.5, and 62.5 μM), and the viability was determined using MTT assay, morphological detection and flow cytometry. The results show that lower concentrations of CrCl3 (0.02, 0.1, and 0.5 μM) did not damage CEF viability. At 0.1 μM, CrCl3 can increase CEF viability (P < 0.05). However, at higher concentrations of CrCl3 (2.5, 12.5, and 62.5 μM), the number of apoptotic and necrotic cells (P < 0.01) and intracellular reactive oxygen species (P < 0.01) increased. In addition, decreased mitochondrial membrane potential (P < 0.01) and enhanced intracellular calcium levels (P < 0.01) were observed after the exposure. Moreover, apoptotic morphological changes induced by these processes in CEF were confirmed using Hoechst 33258 staining. Cell death induced by higher concentrations of CrCl3 was caused by an apoptotic and a necrotic mechanism, whereas the main mechanism of oxidative stress and induced mitochondrial dysfunction was apoptotic death. The induced apoptotic death in CEF is concentration- and time-dependent.
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Affiliation(s)
- Mingchao Liu
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, China
| | - Yanhan Liu
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, China
| | - Ziqiang Cheng
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, China
| | - Jianzhu Liu
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, China
| | - Tongjie Chai
- College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an 271018, China
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Huang W, Li D, Liu Y. Mitochondrial electron transport chain is involved in microcystin-RR induced tobacco BY-2 cells apoptosis. J Environ Sci (China) 2014; 26:1930-5. [PMID: 25193844 DOI: 10.1016/j.jes.2014.06.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/02/2013] [Accepted: 12/19/2013] [Indexed: 06/03/2023]
Abstract
Microcystin-RR (MC-RR) has been suggested to induce apoptosis in tobacco BY-2 cells through mitochondrial dysfunction including the loss of mitochondrial membrane potential (ΔΨm). To further elucidate the mechanisms involved in MC-RR induced apoptosis in tobacco BY-2 cells, we have investigated the role of mitochondrial electron transport chain (ETC) as a potential source for reactive oxygen species (ROS). Tobacco BY-2 cells after exposure to MC-RR (60mg/L) displayed apoptotic changes in association with an increased production of ROS and loss of ΔΨm. All of these adverse effects were significantly attenuated by ETC inhibitors including Rotenone (2μmol/L, complex I inhibitor) and antimycin A (0.01μmol/L, complex III inhibitor), but not by thenoyltrifluoroacetone (5μmol/L, complex II inhibitor). These results suggest that mitochondrial ETC plays a key role in mediating MC-RR induced apoptosis in tobacco BY-2 cells through an increased mitochondrial production of ROS.
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Affiliation(s)
- Wenmin Huang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, the Chinese Academy of Sciences, Wuhan 430074, China.
| | - Dunhai Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Yongding Liu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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A novel mechanism for the antibacterial effect of silver nanoparticles on Escherichia coli. Biometals 2014; 27:1191-201. [PMID: 25104311 DOI: 10.1007/s10534-014-9782-z] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 07/28/2014] [Indexed: 10/24/2022]
Abstract
Silver nanoparticles are known to have antimicrobial properties and have been used extensively in medicine, although the mechanism(s) of action have not yet been clearly established. In the present study, the findings suggest a novel mechanism for the antibacterial effect of silver nanoparticles on Escherichia coli, namely, the induction of a bacterial apoptosis-like response. We propose a possible mechanism for the bacterial apoptosis-like response that includes the following: accumulation of reactive oxygen species (ROS) (detected with H2DCFDA staining), increased intracellular calcium levels (detected with Fura-2 AM), phosphatidylserine exposure in the outer membrane (detected with Annexin V) which is the hallmarks of early apoptosis, disruption of the membrane potential [detected with DiBAC4(3)], activation of a bacterial caspase-like protein (detected by FITC-VAD-FMK staining) and DNA degradation (detected with TUNEL assay) which is the hallmarks of late apoptosis in bacterial cells treated with silver nanoparticles. We also performed RecA expression assay with western blotting and observed activation of SOS response to repair the damaged DNA. To summarize, silver nanoparticles are involved in the apoptosis-like response in E. coli and the novel mechanisms which were identified in this study, suggest that silver nanoparticles may be an effective antimicrobial agent with far lower propensity for inducing microbial resistance than antibiotics.
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Bai Y, Zhao X, Qi C, Wang L, Cheng Z, Liu M, Liu J, Yang D, Wang S, Chai T. Effects of chromium picolinate on the viability of chick embryo fibroblast. Hum Exp Toxicol 2014; 33:403-413. [PMID: 23925942 DOI: 10.1177/0960327113499042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Chromium picolinate (CrPic), which is used as a nutritional supplement and to treat type 2 diabetes, has gained much attention because of its cytotoxicity. This study evaluated the effects of CrPic on the viability of the chick embryo fibroblast (CEF) using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, morphological detection, and flow cytometry. The results show that lower concentrations of CrPic (8 and 16 μM) did not damage CEF viability (p > 0.05). However, higher CrPic concentrations (400 and 600 μM) indicated a highly significant effect on the production of intracellular reactive oxygen species, alteration of mitochondrial membrane potential, intracellular calcium ion concentration, and the apoptosis rate (p < 0.01), contrary to lower CrPic concentrations (8 and 16 μM) and control group. Moreover, apoptotic morphological changes induced by these processes in CEF were confirmed using Hoechst 33258 staining. Cell death induced by higher concentrations of CrPic was caused by an apoptotic and a necrotic mechanism, whereas the main mechanism of oxidative stress-induced mitochondrial dysfunction was apoptotic death.
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Affiliation(s)
- Y Bai
- 1College of Veterinary Medicine, Research Center for Animal Disease Control Engineering Shandong Province, Shandong Agricultural University, Tai'an, China
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Yasur J, Rani PU. Environmental effects of nanosilver: impact on castor seed germination, seedling growth, and plant physiology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:8636-48. [PMID: 23702569 DOI: 10.1007/s11356-013-1798-3] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 04/30/2013] [Indexed: 05/25/2023]
Abstract
Increasing use of nanoparticles in daily products is of great concern today, especially when their positive and negative impact on environment is not known. Hence, in current research, we have studied the impact of silver nanoparticle (AgNPs) and silver nitrate (AgNO3) application on seed germination, root, and shoot length of castor bean, Ricinus communis L. plant. Silver nanoparticles had no significant effects on seedling growth even at higher concentration of 4,000 mg L(-1), while the silver in bulk form as AgNO3 applied on the castor bean seeds inhibited the seed germination. Silver uptake in seedlings of the castor seeds on treatment with both the forms of silver was confirmed through atomic absorption spectroscopy studies. The silver nanoparticle and silver nitrate application to castor seeds also caused an enhanced enzymatic activity of ROS enzymes and phenolic content in castor seedlings. High-performance liquid chromatography analysis of individual phenols indicated enhanced content of parahydroxy benzoic acid. These kinds of studies are of great interest in order to unveil the movement and accumulation of nanoparticles in plant tissues for assessing future applications in the field or laboratory.
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Affiliation(s)
- Jyothsna Yasur
- Biology and Biotechnology Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500007, Andhra Pradesh, India
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Yang SK, Xiao L, Li J, Liu F, Sun L. Oxidative stress, a common molecular pathway for kidney disease: Role of the redox enzyme p66Shc. Ren Fail 2013; 36:313-20. [DOI: 10.3109/0886022x.2013.846867] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Ren L, Zhang D, Jiang XN, Gai Y, Wang WM, Reed BM, Shen XH. Peroxidation due to cryoprotectant treatment is a vital factor for cell survival in Arabidopsis cryopreservation. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2013; 212:37-47. [PMID: 24094052 DOI: 10.1016/j.plantsci.2013.07.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 07/16/2013] [Accepted: 07/20/2013] [Indexed: 05/25/2023]
Abstract
Cryopreservation can be a safe and cost-effective tool for the long-term storage of plant germplasm. In Arabidopsis, the ability to recover from cryogenic treatment was lost as growth progressed. Growth could be restored in 48-h seedlings, whereas 72-h seedlings died after cryogenic treatment. Why seedling age and survival are negatively correlated is an interesting issue. A comparative transcriptomics was performed to screen differentially expressed genes between 48- and 72-h seedlings after exposure to cryoprotectant. Among differentially expressed genes, oxidative stress response genes played important roles in cryoprotectant treatment, and peroxidation was a key factor related to cell survival. Seedlings underwent more peroxidation at 72-h than at 48-h. A comprehensive analysis indicated that peroxidation injured membrane systems leading to photophosphorylation and oxidative phosphorylation damage. Furthermore, the apoptosis-like events were found in cryogenic treatment of Arabidopsis seedlings. 48- and 72-h seedlings underwent different degrees of membrane lipid peroxidation during cryoprotectant treatment, and reducing the injury of oxidative stress was an important factor to successful cryopreservation. This study provided a novel insight of genetic regulatory mechanisms in cryopreservation, and established an excellent model to test and evaluate the effect of exogenous antioxidants and conventional cryoprotectants in plant cryopreservation.
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Affiliation(s)
- Li Ren
- Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, No. 800, Rd. Dong Chuan, Shanghai, PR China.
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KO YUJIN, JEONG JINWOO, CHOI YUNGHYUN, RYU CHUNGHO. Soy soluble polysaccharide induces apoptosis in HCT-116 human colon cancer cells via reactive oxygen species generation. Mol Med Rep 2013; 8:1767-72. [DOI: 10.3892/mmr.2013.1725] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 09/26/2013] [Indexed: 11/05/2022] Open
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Marimuthu S, Balakrishnan P, Nair S. Phytochemical investigation and radical scavenging activities of Melia azedarach and its DNA protective effect in cultured lymphocytes. PHARMACEUTICAL BIOLOGY 2013; 51:1331-1340. [PMID: 23767787 DOI: 10.3109/13880209.2013.791323] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
CONTEXT Melia azedarach Linn (Meliaceae) is an Ayurvedic medicinal plant which is native to India. It is traditionally used for the treatment of leprosy, inflammation, scrofula, anthelmintic, antilithic, diuretic, deobstruent and cardiac disorders. OBJECTIVE To evaluate the phytochemical constituents and antioxidant activities of the ethanol leaf extract of Melia azedarach (MA) and its protective effect against H2O2-induced cellular damage in cultured lymphocytes. MATERIALS AND METHODS The dose-dependent study of MA (20, 40, 60, 80, 100 µg/ml) was used to study in vitro radical scavenging assays. The effective dose of MA (60 µg/ml) was further used to study the H2O2-induced DNA damage (comet assay and DNA fragmentation assay) in cultured lymphocytes. RESULTS The ethanol extract of MA (20, 40, 60, 80, 100 µg/ml) exhibited a significant dose-dependent inhibition of in vitro radical scavenging assays and their corresponding IC50 values as follows: hydroxyl radical (26.50 ± 0.26 µg/ml), superoxide anion (30.00 ± 0.32 µg/ml), nitric oxide radical (48.00 ± 0.48 µg/ml), DPPH radical (30.55 ± 0.32 µg/ml) and reducing power (22.00 ± 0.22 µg/ml). The increase in the severity of DNA damage and TBARS was increased significantly (p<0.05) at 500 µM H2O2-treated cultured lymphocytes and RBC cellular membranes. The phytochemical screening studies identified 13 chemical constituents present in the leaf extract of MA. DISCUSSION AND CONCLUSION The results of this study demonstrate that MA offers protection against H2O2-induced cellular damage and it can be developed as an effective antioxidant during oxidative stress.
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Affiliation(s)
- Srinivasan Marimuthu
- Ayurveda Research Institute for Mother & Child health Care, Poojapura, Trivandrum, India
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Aly HAA. Aroclor 1254 induced oxidative stress and mitochondria mediated apoptosis in adult rat sperm in vitro. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2013; 36:274-283. [PMID: 23686007 DOI: 10.1016/j.etap.2013.04.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 04/13/2013] [Accepted: 04/16/2013] [Indexed: 06/02/2023]
Abstract
Aroclor 1254, a commercial mixture of highly toxic environmental pollutant, is known to cause testicular toxicity. The present study was undertaken to delineate and elucidate the nature and the mechanism of action of Aroclor 1254 on rat sperm in vitro. Sperm of adult rat were incubated with 10(-9)M, 10(-8)M or 10(-7)M of Aroclor 1254 for 3h. Sperm motility was significantly decreased. Moreover, sperm viability, acrosome reaction and mitochondrial membrane potential (Δψm) were significantly decreased in a dose-related pattern. DNA integrity was significantly decreased at 10(-8)M and 10(-7)M of Aroclor 1254, while it did not show any significant change at 10(-9)M. Aroclor 1254 induced downstream events included cytochrome c release and caspase-3 activation, in a dose-related manner. ATP content was decreased while protein carbonyl content was significantly increased in a dose-related manner. The oxidative stress status was also assessed. Hydrogen peroxide (H2O2) production and lipid peroxidation (LPO) were significantly increased in a dose-related pattern. The antioxidant enzymes SOD, CAT and GPx were significantly decreased, while at a concentration of 10(-9)M of Aroclor 1254, GR activity did not show any significant change. The non-enzymatic antioxidant (GSH) was significantly decreased in a dose-dependent manner. In conclusion; our data clearly show that Aroclor 1254 induces toxicity, oxidative stress and culminating in mitochondria mediated apoptosis in rat sperm.
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Affiliation(s)
- Hamdy A A Aly
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Nasr City, Cairo, Egypt.
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Yuan Y, Jiang CY, Xu H, Sun Y, Hu FF, Bian JC, Liu XZ, Gu JH, Liu ZP. Cadmium-induced apoptosis in primary rat cerebral cortical neurons culture is mediated by a calcium signaling pathway. PLoS One 2013; 8:e64330. [PMID: 23741317 PMCID: PMC3669330 DOI: 10.1371/journal.pone.0064330] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 04/11/2013] [Indexed: 11/20/2022] Open
Abstract
Cadmium (Cd) is an extremely toxic metal, capable of severely damaging several organs, including the brain. Studies have shown that Cd disrupts intracellular free calcium ([Ca2+]i) homeostasis, leading to apoptosis in a variety of cells including primary murine neurons. Calcium is a ubiquitous intracellular ion which acts as a signaling mediator in numerous cellular processes including cell proliferation, differentiation, and survival/death. However, little is known about the role of calcium signaling in Cd-induced apoptosis in neuronal cells. Thus we investigated the role of calcium signaling in Cd-induced apoptosis in primary rat cerebral cortical neurons. Consistent with known toxic properties of Cd, exposure of cerebral cortical neurons to Cd caused morphological changes indicative of apoptosis and cell death. It also induced elevation of [Ca2+]i and inhibition of Na+/K+-ATPase and Ca2+/Mg2+-ATPase activities. This Cd-induced elevation of [Ca2+]i was suppressed by an IP3R inhibitor, 2-APB, suggesting that ER-regulated Ca2+ is involved. In addition, we observed elevation of reactive oxygen species (ROS) levels, dysfunction of cytochrome oxidase subunits (COX-I/II/III), depletion of mitochondrial membrane potential (ΔΨm), and cleavage of caspase-9, caspase-3 and poly (ADP-ribose) polymerase (PARP) during Cd exposure. Z-VAD-fmk, a pan caspase inhibitor, partially prevented Cd-induced apoptosis and cell death. Interestingly, apoptosis, cell death and these cellular events induced by Cd were blocked by BAPTA-AM, a specific intracellular Ca2+ chelator. Furthermore, western blot analysis revealed an up-regulated expression of Bcl-2 and down-regulated expression of Bax. However, these were not blocked by BAPTA-AM. Thus Cd toxicity is in part due to its disruption of intracellular Ca2+ homeostasis, by compromising ATPases activities and ER-regulated Ca2+, and this elevation in Ca2+ triggers the activation of the Ca2+-mitochondria apoptotic signaling pathway. This study clarifies the signaling events underlying Cd neurotoxicity, and suggests that regulation of Cd-disrupted [Ca2+]i homeostasis may be a new strategy for prevention of Cd-induced neurodegenerative diseases.
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Affiliation(s)
- Yan Yuan
- College of Veterinary Medicine, Yang Zhou University, Yangzhou, China
| | - Chen-yang Jiang
- College of Veterinary Medicine, Yang Zhou University, Yangzhou, China
| | - Hui Xu
- College of Veterinary Medicine, Yang Zhou University, Yangzhou, China
| | - Ya Sun
- College of Veterinary Medicine, Yang Zhou University, Yangzhou, China
| | - Fei-fei Hu
- College of Veterinary Medicine, Yang Zhou University, Yangzhou, China
| | - Jian-chun Bian
- College of Veterinary Medicine, Yang Zhou University, Yangzhou, China
| | - Xue-zhong Liu
- College of Veterinary Medicine, Yang Zhou University, Yangzhou, China
| | - Jian-hong Gu
- College of Veterinary Medicine, Yang Zhou University, Yangzhou, China
| | - Zong-ping Liu
- College of Veterinary Medicine, Yang Zhou University, Yangzhou, China
- * E-mail:
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Le Saux O, Martin L, Aherrahrou Z, Leftheriotis G, Váradi A, Brampton CN. The molecular and physiological roles of ABCC6: more than meets the eye. Front Genet 2012; 3:289. [PMID: 23248644 PMCID: PMC3520154 DOI: 10.3389/fgene.2012.00289] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Accepted: 11/23/2012] [Indexed: 12/30/2022] Open
Abstract
Abnormal mineralization occurs in the context of several common conditions, including advanced age, diabetes, hypercholesterolemia, chronic renal failure, and certain genetic conditions. Metabolic, mechanical, infectious, and inflammatory injuries promote ectopic mineralization through overlapping yet distinct molecular mechanisms of initiation and progression. The ABCC6 protein is an ATP-dependent transporter primarily found in the plasma membrane of hepatocytes. ABCC6 exports unknown substrates from the liver presumably for systemic circulation. ABCC6 deficiency is the primary cause for chronic and acute forms of ectopic mineralization described in diseases such as pseudoxanthoma elasticum (PXE), β-thalassemia, and generalized arterial calcification of infancy (GACI) in humans and dystrophic cardiac calcification (DCC) in mice. These pathologies are characterized by mineralization of cardiovascular, ocular, and dermal tissues. PXE and to an extent GACI are caused by inactivating ABCC6 mutations, whereas the mineralization associated with β-thalassemia patients derives from a liver-specific change in ABCC6 expression. DCC is an acquired phenotype resulting from cardiovascular insults (ischemic injury or hyperlipidemia) and secondary to ABCC6 insufficiency. Abcc6-deficient mice develop ectopic calcifications similar to both the human PXE and mouse DCC phenotypes. The precise molecular and cellular mechanism linking deficient hepatic ABCC6 function to distal ectopic mineral deposition is not understood and has captured the attention of many research groups. Our previously published work along with that of others show that ABCC6 influences other modulators of calcification and that it plays a much greater physiological role than originally thought.
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Affiliation(s)
- Olivier Le Saux
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii Honolulu, HI, USA
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Real-time concurrent monitoring of apoptosis, cytosolic calcium, and mitochondria permeability transition for hypermulticolor high-content screening of drug-induced mitochondrial dysfunction-mediated hepatotoxicity. Toxicol Lett 2012; 214:175-81. [DOI: 10.1016/j.toxlet.2012.08.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Revised: 08/28/2012] [Accepted: 08/29/2012] [Indexed: 11/22/2022]
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Yu Y, Fan SM, Yuan SJ, Tashiro SI, Onodera S, Ikejima T. Nitric oxide (•NO) generation but not ROS plays a major role in silibinin-induced autophagic and apoptotic death in human epidermoid carcinoma A431 cells. Free Radic Res 2012; 46:1346-60. [DOI: 10.3109/10715762.2012.715369] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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SHIN DONGYEOK, PARK YOUSOO, YANG KWANGMO, KIM GIYOUNG, KIM WUNJAE, HAN MINHO, KANG HOSUNG, CHOI YUNGHYUN. Decitabine, a DNA methyltransferase inhibitor, induces apoptosis in human leukemia cells through intracellular reactive oxygen species generation. Int J Oncol 2012; 41:910-8. [DOI: 10.3892/ijo.2012.1546] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 05/16/2012] [Indexed: 11/05/2022] Open
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