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González-Flores D, Márquez A, Casimiro I. Oxidative Effects in Early Stages of Embryo Development Due to Alcohol Consumption. Int J Mol Sci 2024; 25:4100. [PMID: 38612908 PMCID: PMC11012856 DOI: 10.3390/ijms25074100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
Alcohol, a widely consumed drug, exerts significant toxic effects on the human organism. This review focuses on its impact during fetal development, when it leads to a spectrum of disorders collectively termed Fetal Alcohol Spectrum Disorders (FASD). Children afflicted by FASD exhibit distinct clinical manifestations, including facial dysmorphism, delayed growth, and neurological and behavioral disorders. These behavioral issues encompass diminished intellectual capacity, memory impairment, and heightened impulsiveness. While the precise mechanisms underlying alcohol-induced fetal damage remain incompletely understood, research indicates a pivotal role for reactive oxygen species (ROS) that are released during alcohol metabolism, inciting inflammation at the cerebral level. Ethanol metabolism amplifies the generation of oxidant molecules, inducing through alterations in enzymatic and non-enzymatic systems responsible for cellular homeostasis. Alcohol consumption disrupts endogenous enzyme activity and fosters lipid peroxidation in consumers, potentially affecting the developing fetus. Addressing this concern, administration of metformin during the prenatal period, corresponding to the third trimester of human pregnancy, emerges as a potential therapeutic intervention for mitigating FASD. This proposed approach holds promise for ameliorating the adverse effects of alcohol exposure on fetal development and warrants further investigation.
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Affiliation(s)
- David González-Flores
- Department of Anatomy, Cell Biology and Zoology, Faculty of Medicine and Health Sciences, University of Extremadura, 06006 Badajoz, Spain
| | - Antonia Márquez
- Department of Anatomy, Cell Biology and Zoology, Faculty of Medicine and Health Sciences, University of Extremadura, 06006 Badajoz, Spain
| | - Ilda Casimiro
- Department of Anatomy, Cell Biology and Zoology, Faculty of Sciences, University of Extremadura, 06006 Badajoz, Spain;
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Xu Y, Zhang Z, Zhao Y, Zhao C, Shi M, Dong X, Zhang J, Tan L, Zhang L, Zhao Y. TRAPPC1 is essential for the maintenance and differentiation of common myeloid progenitors in mice. EMBO Rep 2023; 24:e55503. [PMID: 36440617 PMCID: PMC9900341 DOI: 10.15252/embr.202255503] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 11/29/2022] Open
Abstract
Myeloid cell development in bone marrow is essential for the maintenance of peripheral immune homeostasis. However, the role of intracellular protein trafficking pathways during myeloid cell differentiation is currently unknown. By mining bioinformatics data, we identify trafficking protein particle complex subunit 1 (TRAPPC1) as continuously upregulated during myeloid cell development. Using inducible ER-TRAPPC1 knockout mice and bone marrow chimeric mouse models, we demonstrate that TRAPPC1 deficiency causes severe monocyte and neutrophil defects, accompanied by a selective decrease in common myeloid progenitors (CMPs) and subsequent cell subsets in bone marrow. TRAPPC1-deleted CMPs differentiate poorly into monocytes and neutrophils in vivo and in vitro, in addition to exhibiting enhanced endoplasmic reticulum stress and apoptosis via a Ca2+ -mitochondria-dependent pathway. Cell cycle arrest and senescence of TRAPPC1-deleted CMPs are mediated by the activation of pancreatic endoplasmic reticulum kinase and the upregulation of cyclin-dependent kinase inhibitor p21. This study reveals the essential role of TRAPPC1 in the maintenance and differentiation of CMPs and highlights the significance of protein processing and trafficking processes in myeloid cell development.
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Affiliation(s)
- Yanan Xu
- State Key Laboratory of Membrane BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina
| | - Zhaoqi Zhang
- State Key Laboratory of Membrane BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina
- Cunji Medical SchoolUniversity of Chinese Academy of SciencesBeijingChina
| | - Yang Zhao
- State Key Laboratory of Membrane BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina
| | - Chenxu Zhao
- State Key Laboratory of Membrane BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina
- Cunji Medical SchoolUniversity of Chinese Academy of SciencesBeijingChina
| | - Mingpu Shi
- State Key Laboratory of Membrane BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina
- Cunji Medical SchoolUniversity of Chinese Academy of SciencesBeijingChina
| | - Xue Dong
- State Key Laboratory of Membrane BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina
- Cunji Medical SchoolUniversity of Chinese Academy of SciencesBeijingChina
| | - Jiayu Zhang
- State Key Laboratory of Membrane BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina
- Cunji Medical SchoolUniversity of Chinese Academy of SciencesBeijingChina
| | - Liang Tan
- Kidney Transplantation DepartmentSecond Xiangya Hospital of Central South UniversityChangshaChina
| | - Lianfeng Zhang
- Key Laboratory of Human Diseases Comparative Medicine, Ministry of Health, Institute of Laboratory Animal ScienceChinese Academy of Medical Sciences, Peking Union Medical CollegeBeijingChina
| | - Yong Zhao
- State Key Laboratory of Membrane BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina
- Cunji Medical SchoolUniversity of Chinese Academy of SciencesBeijingChina
- Beijing Institute for Stem Cell and Regenerative MedicineBeijingChina
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3
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Öz A, Çinar R, Naziroğlu M. TRPV1 stimulation increased oxidative neurotoxicity and apoptosis in the glia cell membrane but not in the perinuclear area: An evidence of TRPV1 subtype. Metab Brain Dis 2022; 37:2291-2304. [PMID: 35776390 DOI: 10.1007/s11011-022-01037-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 06/13/2022] [Indexed: 12/01/2022]
Abstract
Glia are essential neurons of the immune system in the central nervous system. The effective mission of glia depends on their activation, release of cytokines, and oxidative cleaning of debris material from neuronal cells. Accumulating evidence indicates that microglia activation-induced oxidative stress via the activation Ca2+ permeable TRPV1 channel has an essential role in the pathophysiology of neurodegenerative diseases. However, there is scarce information on the cytosolic localization of TRPV1 and the induction of oxidative cytotoxicity in the glia. Hence, we investigated the interactions between cytosolic TRPV1 expression levels and oxidative neurotoxicity in the BV2, C8-D1A, N9 glia, and DBTRG glioblastoma cells. We observed TRPV1 expression in the perinuclear area but not in the cell membrane in the BV2, C8-D1A, and N9 cells. Hence, we observed no activation of TRPV1 on the increase of mitochondrial free reactive oxygen species (mROS) and apoptosis in the cells after the capsaicin stimulation. However, we observed TRPV1 channel expression in the positive control (DBTRG) cell membranes. Hence, the Ca2+ influx, TRPV1 current density, apoptosis, and mROS levels were increased in the DBTRG cells after the capsaicin stimulation, although their levels were diminished by the treatment of the TRPV1 blocker (capsazepine). In conclusion, the presence of TRPV1 in the cell membrane of DBTRG cells induced excessive generation of mROS and apoptosis actions, although the presence of TRPV1 in the perinuclear area did not cause the actions. It seems that there is a subtype of TRPV1 in the perinuclear area, and it is not activated by the capsaicin.
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Affiliation(s)
- Ahmi Öz
- Department of Biophysics, School of Medicine, Suleyman Demirel University, TR-32260, Isparta, Turkey
| | - Ramazan Çinar
- Department of Neuroscience, Institute of Health Sciences, Suleyman Demirel University, TR-32260, Isparta, Turkey
| | - Mustafa Naziroğlu
- Department of Biophysics, School of Medicine, Suleyman Demirel University, TR-32260, Isparta, Turkey.
- Department of Neuroscience, Institute of Health Sciences, Suleyman Demirel University, TR-32260, Isparta, Turkey.
- Neuroscience Research Center (NOROBAM), Suleyman Demirel University, TR-32260, Isparta, Turkey.
- Drug Discovery Unit, BSN Health, Analyses, Innovation, Consultancy, Organization, Agriculture and Industry Ltd, TR-32260, Isparta, Turkey.
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4
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He PY, Hou YH, Yang Y, Li N. The anticancer effect of extract of medicinal mushroom Sanghuangprous vaninii against human cervical cancer cell via endoplasmic reticulum stress-mitochondrial apoptotic pathway. JOURNAL OF ETHNOPHARMACOLOGY 2021; 279:114345. [PMID: 34146628 DOI: 10.1016/j.jep.2021.114345] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 06/04/2021] [Accepted: 06/15/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sanghuangprous vaninii (Ljub.) L.W. Zhou & Y.C. Dai, known as "Sanghuang" in China, is mainly distributed in the northeast of China. As a traditional medicinal mushroom, "Sanghuang" is medicinally used for resolving the symptoms of gynecological tumors including vaginal bleeding, leucorrhea, abdominal pain and abdominal mass. This mushroom is potential for gynecological cancers therapy. However, there is a lack of scientific evidence on its anti-tumor activity against human cervical cancer, the most common gynecological cancer. AIM OF THE STUDY To identify the anti-tumor potential of the extract of Sanghuangprous vaninii (ESV) on human cervical cancer SiHa cells, and explore detailed mechanisms of ESV inducing cancer cell death. MATERIALS AND METHODS The anti-proliferation effects were evaluated by Cell Counting Kit-8 (CCK8) assay. Transmission electron microscope was applied to determined the cellular ultrastructure changes. The cell cycle distribution, quantification of apoptotic cells, mitochondrial transmembrane potential, reactive oxygen species (ROS) level, and cytosolic calcium level were determined by flow cytometer. Western blot analysis was used to explore the alterations in the expression levels of endoplasmic reticulum stress-marked and apoptosis-related proteins. The in-vivo anti-tumor effect was identified by mouse xenograft model. RESULTS ESV significantly inhibited the proliferation of SiHa cells in vivo and vitro. Blocking cell cycle and causing cell apoptosis contributed to cell death induced by ESV. Mechanistically, ESV induced endoplasmic reticulum stress evidenced by the elevated expressions of GRP78 and CHOP, which accompanied by the release of calcium (Ca2+). The Ca2+ overload and oxidative stress facilitated the collapse of mitochondrial membrane potential and subsequently activated caspase-3 and -9, which eventually lead to cell apoptosis. CONCLUSIONS Our results revealed that Sanghuangprous vaninii was effective against human cervical cancer SiHa cells in vitro and vivo. There is a promising potential that Sanghuangprous vaninii might be a candidate for cervical cancer therapy.
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Affiliation(s)
- Ping-Ya He
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei, 230032, PR China.
| | - Yu-Hao Hou
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei, 230032, PR China.
| | - Yue Yang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei, 230032, PR China.
| | - Ning Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei, 230032, PR China.
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Purohit R, Bera AK. Pannexin 1 plays a pro-survival role by attenuating P2X7 receptor-mediated Ca 2+ influx. Cell Calcium 2021; 99:102458. [PMID: 34479067 DOI: 10.1016/j.ceca.2021.102458] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 07/27/2021] [Accepted: 08/16/2021] [Indexed: 10/20/2022]
Abstract
Extracellular ATP works as an autocrine and/or paracrine signaling molecule by activating plasma membrane-localized purinergic receptors. Stimulation of purinergic P2X7 receptor (P2X7R) increases cytosolic Ca2+ ([Ca2+]c), which in turn activates Pannexin 1 (Panx1) channel. In earlier studies, Panx1 and P2X7R have been shown to interact physically. Also, both the channels have been implicated in similar pathophysiological processes. In this study, we investigated the effect of Panx1 on P2X7R-mediated Ca2+influx. Panx1 attenuated P2X7R-mediated [Ca2+]c rise in CHO-K1 and HEK-293 cells. [Ca2+]c rise was higher in Panx1 knockdown astrocytes. The inhibitory effect was unaffected in the presence of Panx1 blocker, carbenoxolone. The region between 350th and 386th amino acid residues in the carboxyl terminus (CT) of Panx1 was found to be crucial for inhibiting P2X7R. Like full-length Panx1, the CT (350th to 426th amino acids) alone was able to attenuate the [Ca2+]c rise. Further, CT prevented cell death caused by P2X7R overactivation. Based on our results, we propose a novel pro-survival role of Panx1 exerted by modulating P2X7R.
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Affiliation(s)
- Rutambhara Purohit
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Amal Kanti Bera
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600 036, India.
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Hyatt HW, Powers SK. Mitochondrial Dysfunction Is a Common Denominator Linking Skeletal Muscle Wasting Due to Disease, Aging, and Prolonged Inactivity. Antioxidants (Basel) 2021; 10:antiox10040588. [PMID: 33920468 PMCID: PMC8070615 DOI: 10.3390/antiox10040588] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/02/2021] [Accepted: 04/07/2021] [Indexed: 12/29/2022] Open
Abstract
Skeletal muscle is the most abundant tissue in the body and is required for numerous vital functions, including breathing and locomotion. Notably, deterioration of skeletal muscle mass is also highly correlated to mortality in patients suffering from chronic diseases (e.g., cancer). Numerous conditions can promote skeletal muscle wasting, including several chronic diseases, cancer chemotherapy, aging, and prolonged inactivity. Although the mechanisms responsible for this loss of muscle mass is multifactorial, mitochondrial dysfunction is predicted to be a major contributor to muscle wasting in various conditions. This systematic review will highlight the biochemical pathways that have been shown to link mitochondrial dysfunction to skeletal muscle wasting. Importantly, we will discuss the experimental evidence that connects mitochondrial dysfunction to muscle wasting in specific diseases (i.e., cancer and sepsis), aging, cancer chemotherapy, and prolonged muscle inactivity (e.g., limb immobilization). Finally, in hopes of stimulating future research, we conclude with a discussion of important future directions for research in the field of muscle wasting.
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7
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Nazıroğlu M, Öz A, Yıldızhan K. Selenium and Neurological Diseases: Focus on Peripheral Pain and TRP Channels. Curr Neuropharmacol 2021; 18:501-517. [PMID: 31903884 PMCID: PMC7457405 DOI: 10.2174/1570159x18666200106152631] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/26/2019] [Accepted: 01/04/2020] [Indexed: 12/18/2022] Open
Abstract
Pain is a complex physiological process that includes many components. Growing evidence supports the idea that oxidative stress and Ca2+ signaling pathways participate in pain detection by neurons. The main source of endogenous reactive oxygen species (ROS) is mitochondrial dysfunction induced by membrane depolarization, which is in turn caused by Ca2+ influx into the cytosol of neurons. ROS are controlled by antioxidants, including selenium. Selenium plays an important role in the nervous system, including the brain, where it acts as a cofactor for glutathione peroxidase and is incorporated into selenoproteins involved in antioxidant defenses. It has neuroprotective effects through modulation of excessive ROS production, inflammation, and Ca2+ overload in several diseases, including inflammatory pain, hypersensitivity, allodynia, diabetic neuropathic pain, and nociceptive pain. Ca2+ entry across membranes is mediated by different channels, including transient receptor potential (TRP) channels, some of which (e.g., TRPA1, TRPM2, TRPV1, and TRPV4) can be activated by oxidative stress and have a role in the induction of peripheral pain. The results of recent studies indicate the modulator roles of selenium in peripheral pain through inhibition of TRP channels in the dorsal root ganglia of experimental animals. This review summarizes the protective role of selenium in TRP channel regulation, Ca2+ signaling, apoptosis, and mitochondrial oxidative stress in peripheral pain induction.
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Affiliation(s)
- Mustafa Nazıroğlu
- Neuroscience Research Center, Suleyman Demirel University, Isparta, Turkey.,Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey.,Drug Discovery Unit, BSN Health, Analysis and Innovation Ltd. Inc. Teknokent, Isparta, Turkey
| | - Ahmi Öz
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Kenan Yıldızhan
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
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8
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Zhang Y, Li Y, Zhang J, Qi X, Cui Y, Yin K, Lin H. Cadmium induced inflammation and apoptosis of porcine epididymis via activating RAF1/MEK/ERK and NF-κB pathways. Toxicol Appl Pharmacol 2021; 415:115449. [PMID: 33577919 DOI: 10.1016/j.taap.2021.115449] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/03/2021] [Accepted: 02/05/2021] [Indexed: 02/08/2023]
Abstract
Cadmium (Cd) was a serious heavy metal pollutant. Cd exposure will cause damage to reproductive organs. It was largely unknown whether Cd exposure caused inflammation and apoptosis in epididymis. In this study, we established models of Cd exposure in swine, and the apoptotic level of epididymis was detected by in situ TUNEL fluorescence staining assay, the results showed that Cd exposure significantly increased TUNEL-apoptosis index. Furthermore, the results of qRT-PCR and Western blot showed that Cd activated the proto-oncogenic serine/threonine kinase-1 (RAF1)/mitogen-activated protein kinase (MEK)/extracellular signal-regulated kinase (ERK) signal pathway (RAF1/MEK/ERK) and led to the subsequent up-regulation of the nuclear factor-κB (NF-κB), tumor necrosis factor α (TNF-α), cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), interleukin-1β (IL-1β), interleukin-6 (IL-6), interleukin-8 (IL-8), caused inflammation in epididymis. NF-κB inflammation pathway also mediated the tumor protein P53 (P53) and indirectly activated the Cytochrome c (Cytc), B-cell lymphoma-2 (Bcl-2), Bcl-2-Associated X protein (Bax), Caspase 3, Caspase 9. In summary, we believed that the RAF1/MEK/ERK pathway came into play in the apoptosis of epididymal tissues exposed to Cd by activating the NF-κB Inflammation pathway, followed by activation of the mitochondrial apoptotic pathway. This study provides more abundant data for exploring the reproductive toxicity of Cd.
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Affiliation(s)
- Yue Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Yulong Li
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China
| | - Jinxi Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Xue Qi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Yuan Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Kai Yin
- College of Wildlife Resources, Northeast Forestry University, Harbin 150040, PR China
| | - Hongjin Lin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China.
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Akyuva Y, Nazıroğlu M, Yıldızhan K. Selenium prevents interferon-gamma induced activation of TRPM2 channel and inhibits inflammation, mitochondrial oxidative stress, and apoptosis in microglia. Metab Brain Dis 2021; 36:285-298. [PMID: 33044639 DOI: 10.1007/s11011-020-00624-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 09/22/2020] [Indexed: 12/22/2022]
Abstract
Microglia as the primary immune cells of brain act protective effects against injuries and infections in the central nervous system. Inflammation via excessive Ca2+ influx and oxygen radical species (ROS) generation is a known factor in many neurodegenerative disorders. Importantly, the Ca2+ permeable TRPM2 channel is activated by oxidative stress. Thus, TRPM2 could provide the excessive Ca2+ influx in the microglia. Although TRPM2 expression level is high in inflammatory cells, the interplay between mouse microglia and TRPM2 channel during inflammation is not fully identified. Thus, it is important to understand the mechanisms and factors involved in order to enhance neuronal regeneration and repair. The data presented here indicate that TRPM2 channels were activated in microglia cells by interferon-gamma (IFNγ). The IFNγ treatment further increased apoptosis (early and late) and cytokine productions (TNF-α, IL-1β, and IL-6) which were due to increased lipid peroxidation and ROS generations as well as increased activations of caspase -3 (Casp-3) and - 9 (Casp-9). However, selenium treatment diminished activations of TRPM2, cytokine, Casp-3, and Casp-9, and levels of lipid peroxidation and mitochondrial ROS production in the microglia that were treated with IFNγ. Moreover, addition of either PARP1 inhibitors (PJ34 or DPQ) or TRPM2 blockers (2-APB or ACA) potentiated the modulator effects of selenium. These results clearly suggest that IFNγ leads to TRPM2 activation in microglia cells; whereas, selenium prevents IFNγ-mediated TRPM2 activation and cytokine generation. Together the interplay between IFNγ released from microglia cells is importance in brain inflammation and may affect oxidative cytotoxicity in the microglia. Graphical abstract Summary of pathways involved in IFNγ-induced TRPM2 activation and microglia death through excessive reactive oxygen species (ROS): Modulator role of selenium (Se). The IFNγ causes the microglia activation. Nudix box domain of TRPM2 is sensitive to ROS. The ROS induces DNA damage and ADPR-ribose (ADPR) production in the nucleus via PARP1 enzyme activation. ADPR and ROS-induced TRPM2 activation stimulates excessive Ca2+ influx. ROS are produced in the mitochondria through the increase of free cytosolic Ca2+ (via TRPM2 activation) by the IFNγ treatment, although they are diminished by the TRPM2 channel blocker (ACA and 2-APB) and PARP1 inhibitor treatments. The main mechanism in the cell death and inflammatory effects of IFNγ is mediated by stimulation of ROS-mediated caspase (caspase -3 and - 9) activations and cytokine production (TNF-α, IL-1β, and IL-6) via TRPM2 activation, respectively. The apoptotic, inflammatory, and oxidant actions of IFNγ are modulated through TRPM2 inhibition by the Se treatment.
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Affiliation(s)
- Yener Akyuva
- Departmant of Neurosurgery, Faculty of Medicine, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Mustafa Nazıroğlu
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey.
- Drug Discovery Unit, BSN Health, Analysis and Innovation Ltd. Inc. Teknokent, Isparta, Turkey.
- Neuroscience Research Center (NÖROBAM), Suleyman Demirel University, TR-32260, Isparta, Turkey.
| | - Kenan Yıldızhan
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
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Armağan HH, Nazıroğlu M. Glutathione depletion induces oxidative injury and apoptosis via TRPM2 channel activation in renal collecting duct cells. Chem Biol Interact 2020; 334:109306. [PMID: 33309544 DOI: 10.1016/j.cbi.2020.109306] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 10/23/2020] [Accepted: 10/28/2020] [Indexed: 12/18/2022]
Abstract
Oxidative stress (OS)-induced glutathione (GSH) depletion plays an essential role in several kidney diseases such as chronic kidney disease and nephrotoxicity. The OS-dependent activation of TRPM2 cation channel in several neurons and cells were modulated by the concentration of intracellular GSH. However, the effects of GSH alteration on TRPM2 activation, OS, and apoptosis in the cortical collecting duct (mpkCCDc14) cells still remain elusive. We investigated the effects of GSH supplementation on OS-induced TRPM2 activation, mitochondrial oxidative stress, and apoptosis in the human embryonic kidney 293 (HEK293) and mpkCCDc14 cells treated with buthionine-sulfoximine (BSO), a GSH synthase inhibitor. The HEK293 and mpkCCDc14 cells were divided into five groups as control, GSH (10 mM for 2 h), BSO (0.5 mM for 6 h), BSO + GSH, and BSO + TRPM2 channel blockers. Apoptosis, cell death, mitochondrial OS, caspase -3, caspase -9, cytosolic free Zn2+, and Ca2+ concentrations were increased in the BSO group of the TRPM2 expressing mpkCCDc14 cells, although they were diminished by the treatments of GSH, PARP-1 inhibitors (PJ34 and DPQ), and TRPM2 blockers (ACA and 2-APB). The BSO-induced decreases in the levels of cell viability and cytosolic GSH were increased by the treatments of GSH, ACA, and 2-APB. However, the effects of BSO and GSH were not observed in the non-TRPM2 expressing HEK293 cells. Current results show that maintaining GSH homeostasis is not only important for quenching OS in the cortical collecting duct cells but equally critical to modulate TRPM2 activation. Thus, suppressing apoptosis and mitochondrial OS responses elicited by oxidant action of GSH depletion.
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Affiliation(s)
- Hamit Hakan Armağan
- Department of Emergency Medicine, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Mustafa Nazıroğlu
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey; Drug Discovery Unit, BSN Health, Analyses, Innovation, Consultancy, Organization, Agriculture and Industry Ltd, Göller Bölgesi Teknokenti, Isparta, Turkey.
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11
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Cantonero C, Camello PJ, Abate C, Berardi F, Salido GM, Rosado JA, Redondo PC. NO1, a New Sigma 2 Receptor/TMEM97 Fluorescent Ligand, Downregulates SOCE and Promotes Apoptosis in the Triple Negative Breast Cancer Cell Lines. Cancers (Basel) 2020; 12:E257. [PMID: 31973006 PMCID: PMC7072710 DOI: 10.3390/cancers12020257] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 12/22/2022] Open
Abstract
(1) Background: The structure of the Sigma 2 receptor/TMEM97 (σ2RTMEM97) has recently been reported. (2, 3) Methods and results: We used genetic and biochemical approaches to identify the molecular mechanism downstream of σ2R/TMEM97. The novel σ2R/TMEM97 fluorescent ligand, NO1, reduced the proliferation and survival of the triple negative breast cancer cell lines (TNBC: MDA-MB-231 and MDA-MB-468 cell lines), due to NO1-induced apoptosis. Greater bioaccumulation and faster uptake of NO1 in MDA-MB-231 cells compared to MCF10A or MCF7 cell lines were also shown. Accordingly, elevated σ2R/TMEM97 expression was confirmed by Western blotting. In contrast to NO1, other σ2R/TMEM97 ligands, such as SM21 and PB28, enhanced MDA-MB-231 cell proliferation and migration. Store-operated calcium entry (SOCE) is crucial for different cancer hallmarks. Here, we show that NO1, but not other σ2R/TMEM97 ligands, reduced SOCE in MDA-MB-231 cells. Similarly, TMEM97 silencing in MDA-MB-231 cells also impaired SOCE. NO1 administration downregulated STIM1-Orai1 interaction, probably by impairing the positive regulatory effect of σ2R/TMEM97 on STIM1, as we were unable to detect interaction with Orai1. (4) Conclusion: σ2R/TMEM97 is a key protein for the survival of triple negative breast cancer cells by promoting SOCE; therefore, NO1 may become a good pharmacological tool to avoid their proliferation.
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Affiliation(s)
- Carlos Cantonero
- Department of Physiology, Phycell and FIMUL Groups, University of Extremadura, 10003 Caceres, Spain; (C.C.); (P.J.C.)
| | - Pedro Javier Camello
- Department of Physiology, Phycell and FIMUL Groups, University of Extremadura, 10003 Caceres, Spain; (C.C.); (P.J.C.)
| | - Carmen Abate
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via Orabona 4, I-70125 Bari, Italy; (C.A.); (F.B.)
| | - Francesco Berardi
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via Orabona 4, I-70125 Bari, Italy; (C.A.); (F.B.)
| | - Gines Maria Salido
- Institute of Molecular Pathology Biomarkers (IMPB) of University of Extremadura, 10003 Caceres, Spain; (G.M.S.); (J.A.R.)
| | - Juan Antonio Rosado
- Institute of Molecular Pathology Biomarkers (IMPB) of University of Extremadura, 10003 Caceres, Spain; (G.M.S.); (J.A.R.)
| | - Pedro C. Redondo
- Institute of Molecular Pathology Biomarkers (IMPB) of University of Extremadura, 10003 Caceres, Spain; (G.M.S.); (J.A.R.)
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12
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Dai X, Nie G, Cao H, Xing C, Hu G, Zhang C. In vivo assessment of molybdenum and cadmium co-induced the mRNA levels of heat shock proteins, inflammatory cytokines and apoptosis in shaoxing duck (Anas platyrhyncha) testicles. Poult Sci 2019; 98:5424-5431. [DOI: 10.3382/ps/pez328] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 05/22/2019] [Indexed: 12/20/2022] Open
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Anti-Inflammatory and Anti-Apoptotic Effects of Stybenpropol A on Human Umbilical Vein Endothelial Cells. Int J Mol Sci 2019; 20:ijms20215383. [PMID: 31671764 PMCID: PMC6862503 DOI: 10.3390/ijms20215383] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/19/2019] [Accepted: 10/24/2019] [Indexed: 12/28/2022] Open
Abstract
Inflammation is a key mediator in the progression of atherosclerosis (AS). Benzoinum, a resin secreted from the bark of Styrax tonkinensis, has been widely used as a form of traditional Chinese medicine in clinical settings to enhance cardiovascular function, but the active components of the resin responsible for those pharmaceutical effects remain unclear. To better clarify these components, a new phenylpropane derivative termed stybenpropol A was isolated from benzoinum and characterized via comprehensive spectra a nalysis. We further assessed how this phenylpropane derivative affected treatment of human umbilical vein endothelial cells (HUVECs) with tumor necrosis factor-α (TNF-α). Our results revealed that stybenpropol A reduced soluble intercellular cell adhesion molecule-1 (sICAM-1), soluble vascular cell adhesion molecule-1 (sVCAM-1), interleukin-8 (IL-8), and interleukin-1β (IL-1β) expression by ELISA, inhibited apoptosis, and accelerated nitric oxide (NO) release in TNF-α-treated HUVECs. We further found that stybenpropol A decreased VCAM-1, ICAM-1, Bax, and caspase-9 protein levels, and increased the protein levels of Bcl-2, IKK-β, and IκB-α. This study identified a new, natural phenylpropane derivative of benzoinum, and is the first to reveal its cytoprotective effects in the context of TNF-α-treated HUVECs via regulation of the NF-κB and caspase-9 signaling pathways.
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Ataizi ZS, Ertilav K, Nazıroğlu M. Mitochondrial oxidative stress-induced brain and hippocampus apoptosis decrease through modulation of caspase activity, Ca 2+ influx and inflammatory cytokine molecular pathways in the docetaxel-treated mice by melatonin and selenium treatments. Metab Brain Dis 2019; 34:1077-1089. [PMID: 31197678 DOI: 10.1007/s11011-019-00428-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 05/01/2019] [Indexed: 01/03/2023]
Abstract
Docetaxel (DOCE) is widely used to treat several types of glioblastoma. Adverse effects DOCE seriously limit its clinical use in several tissues. Its side effects on brain cortex and hippocampus have not been clarified yet. Limited data indicated a protective effect of melatonin (MLT) and selenium (SELEN) on DOCE-induced apoptosis, Ca2+ influx and mitochondrial reactive oxygen species (ROS) in several tissues except brain and hippocampus. The purpose of this study is to discover the protective effect of MLT and SELEN on DOCE-induced brain and hippocampus oxidative toxicity in mice. MLT and SELEN pretreatments significantly ameliorated acute DOCE-induced mitochondrial ROS production in the hippocampus and brain tissues by reducing levels of lipid peroxidation, intracellular ROS production and mitochondrial membrane depolarization, while increasing levels of total antioxidant status, glutathione, glutathione peroxidase, MLT, α-tocopherol, γ-tocopherol, vitamin A, vitamin C and β-carotene in the tissues. Furthermore, MLT and SELEN pretreatments increased cell viability and TRPM2 channel activation in the hippocampus and brain followed by decreased activations of TNF-α, IL-1β, IL-6, and caspase -3 and - 9, suggesting a suppression of calcium ion influx, apoptosis and inflammation responses. However, modulator role of SELEN on the values in the tissues is more significant than in the MLT treatment. MLT and SELEN prevent DOCE-induced hippocampus and brain injury by inhibiting mitochondrial ROS and cellular apoptosis through regulating caspase -3 and - 9 activation signaling pathways. MLT and SELEN may serve as potential therapeutic targets against DOCE-induced toxicity in the hippocampus and brain.
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Affiliation(s)
- Zeki Serdar Ataizi
- Departmant of Neurosurgery, Yunus Emre General State Hospital, Eskişehir, Turkey
| | - Kemal Ertilav
- Departmant of Neurosurgery, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Mustafa Nazıroğlu
- Neuroscience Research Center, Suleyman Demirel University, Isparta, Turkey.
- Drug Discovery Unit, BSN Health, Analysis and Innovation Ltd. Inc. Teknokent, Isparta, Turkey.
- Süleyman Demirel Üniversitesi, Tıp Fakültesi, Biyofizik Anabilim Dalı, TR-32260, Isparta, Turkey.
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Porcine Circovirus Type 2 Induces ORF3-Independent Mitochondrial Apoptosis via PERK Activation and Elevation of Cytosolic Calcium. J Virol 2019; 93:JVI.01784-18. [PMID: 30651358 DOI: 10.1128/jvi.01784-18] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 12/29/2018] [Indexed: 01/27/2023] Open
Abstract
Our previous studies demonstrated that porcine circovirus type 2 (PCV2) triggers an unfolded protein response (UPR) in porcine kidney PK-15 cells by activating the protein kinase R-like endoplasmic reticulum kinase (PERK)/eukaryotic initiation factor 2α (eIF2α) pathway of endoplasmic reticulum (ER) stress, which in turn facilitates viral replication (Y. Zhou et al., Viruses 8:e56, 2016, https://doi.org/10.3390/v8020056; Y. Zhou et al., J Zhejiang Univ Sci B 18:316-323, 2017, https://doi.org/10.1631/jzus.B1600208). PCV2 is found to cause oxidative stress and upregulation of cytoplasmic Ca2+ levels. The virus is reported to employ its open reading frame 3 (ORF3) to induce apoptosis. We wondered whether and how PCV2-induced UPR would lead to apoptosis independent of ORF3. Using an ORF3-deficient PCV2 mutant (ΔORF3), apoptotic responses in infected PK-15 and porcine alveolar macrophage (PAM) cells were still apparent, although lower than in the parental PCV2 strain. We hypothesized that apoptosis induced by ΔORF3 might result from the UPR. We found that ΔORF3-induced apoptosis was significantly reduced when the infected cells were treated with the selective PERK blocker GSK2606414 (GSK) or the general ER stress attenuator 4-phenylbutyrate (4-PBA). Such treatments also ameliorated elevation of cytoplasmic Ca2+ and reactive oxygen species (ROS) levels in PK-15 and PAM cells, two predisposing factors for apoptosis via disruption of the ER-mitochondrion units. Treatment of ΔORF3-infected cells with GSK and 4-PBA also decreased the mitochondrial Ca2+ load and increased the mitochondrial membrane potential (MMP). With transient expression of the structural protein capsid (Cap) in combination with PERK silencing, we found that Cap induced MMP collapse and mitochondrial apoptosis could result from the UPR and elevation of Ca2+ and ROS levels, which were inhibitable by downregulation of PERK. We propose that PCV2-driven ER stress is Cap dependent and could lead to mitochondrial apoptotic responses independent of ORF3 via perturbation of intracellular Ca2+ homeostasis and accumulation of ROS.IMPORTANCE PCV2 encodes protein ORF3, a putative protein with proapoptotic activity. Our early studies showed that PCV2 infection triggers ER stress via selective activation of the PERK pathway, a branch of the ER stress pathways, in permissive cells for enhanced replication and infection increased cytosolic Ca2+ and ROS levels. Here we clearly show that PCV2 infection or Cap expression induces ORF3-independent apoptosis via increased cytosolic and mitochondrial Ca2+ levels and cellular ROS levels as a result of activation of the PERK pathway.
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Ma YB, Lu CJ, Junaid M, Jia PP, Yang L, Zhang JH, Pei DS. Potential adverse outcome pathway (AOP) of silver nanoparticles mediated reproductive toxicity in zebrafish. CHEMOSPHERE 2018; 207:320-328. [PMID: 29803881 DOI: 10.1016/j.chemosphere.2018.05.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/25/2018] [Accepted: 05/03/2018] [Indexed: 05/11/2023]
Abstract
Recently, the augmented utilization of silver nanoparticles (AgNPs) resulted in increasingrates of its release to aquatic environment, which potentially caused adverse effects to aquatic organisms. Therefore, this study investigated - reproductive toxicity and associated potential adverse outcome pathway (AOP) in zebrafish after chronic exposure to AgNPs. To serve the purpose, three-month-old adult zebrafish were exposed to different concentrations (0, 10, 33 and 100 μg/L) of AgNPs for five weeks. Exposure to 33 and 100 μg/L of AgNPs significantly decreased the fecundity in female zebrafish, accompanied by increasing apoptotic cells in the ovarian and testicular tissue using TUNEL assay. Increasing tissue burdens of AgNPs and reactive oxygen species (ROS) production were also found in both ovary and testis after five-week exposure to AgNPs. To explore the mechanism of the apoptotic pathway, the transcription levels of various genes (bax, bcl-2, caspase-3, and caspase-9) associated with the mitochondrion-mediated apoptosis pathway were examined in zebrafish after exposure to AgNPs. The results showed that the expression patterns of all the investigated genes were altered to some extent. These findings demonstrated that AgNPs exposure caused oxidative stress, induced germ cells apoptosis via mitochondrial-dependent pathway, and ultimately impaired the reproduction in zebrafish.
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Affiliation(s)
- Yan-Bo Ma
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Chun-Jiao Lu
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Muhammad Junaid
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pan-Pan Jia
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Yang
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Jing-Hui Zhang
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - De-Sheng Pei
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.
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17
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Li Q, Wang BL, Sun FR, Li JQ, Cao XP, Tan L. The role of UNC5C in Alzheimer's disease. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:178. [PMID: 29951500 DOI: 10.21037/atm.2018.04.43] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Alzheimer's disease (AD) is a chronic progressive neurodegenerative disease in adults characterized by the deposition of extracellular plaques of β-amyloid protein (Aβ), intracellular neurofibrillary tangles (NFTs), synaptic loss and neuronal apoptosis. AD has a strong and complex genetic component that involving into multiple genes. With recent advances in whole-exome sequencing (WES) and whole-genome sequencing (WGS) technology, UNC5C was identified to have association with AD. Emerging studies on cell and animal models identified that aberrant UNC5C may contribute to AD by activating death-associated protein kinase 1 (DAPK1) which is a new component involved in AD pathogenesis with an extensive involvement in aberrant tau, Aβ and neuronal apoptosis/autophagy. In this review, we briefly summarize the biochemical properties, genetics, epigenetics, and the speculative role of UNC5C in AD. We hope our review would bring comprehensive understandings of AD pathogenesis and provide new therapeutic targets for AD.
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Affiliation(s)
- Quan Li
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao 266071, China
| | - Bai-Ling Wang
- Department of Geriatrics, Qingdao Mental Health Center, Qingdao 266034, China
| | - Fu-Rong Sun
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao 266071, China
| | - Jie-Qiong Li
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao 266071, China
| | - Xi-Peng Cao
- Clinical Research Center, Qingdao Municipal Hospital, Qingdao University, Qingdao 266071, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao 266071, China
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18
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Disrupting CCT-β : β-tubulin selectively kills CCT-β overexpressed cancer cells through MAPKs activation. Cell Death Dis 2017; 8:e3052. [PMID: 28906489 PMCID: PMC5636972 DOI: 10.1038/cddis.2017.425] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 07/12/2017] [Accepted: 07/24/2017] [Indexed: 12/21/2022]
Abstract
We have previously demonstrated the ability of I-Trp to disrupt the protein–protein interaction of β-tubulin with chaperonin-containing TCP-1β (CCT-β). This caused more severe apoptosis in multidrug-resistant MES-SA/Dx5, compared to MES-SA, due to its higher CCT-β overexpression. In this study, we screened a panel of cancer cell lines, finding CCT-β overexpression in the triple-negative breast cancer cell line MDA-MB-231, colorectal cancer cell lines Colo205 and HCT116, and a gastric cancer cell line MKN-45. Thus, I-Trp killed these cancers with sub- to low-μM EC50, whereas it was non-toxic to MCF-10A. We then synthesized analogs of I-Trp and evaluated their cytotoxicity. Furthermore, apoptotic mechanism investigations revealed the activation of both protein ubiquitination/degradation and ER-associated protein degradation pathways. These pathways proceeded through activation of MAPKs at the onset of CCT-β : β-tubulin complex disruption. We thus establish an effective strategy to treat CCT-β overexpressed cancers by disrupting the CCT-β : β-tubulin complex.
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Jolkinolide B induces apoptosis of colorectal carcinoma through ROS-ER stress-Ca 2+-mitochondria dependent pathway. Oncotarget 2017; 8:91223-91237. [PMID: 29207638 PMCID: PMC5710918 DOI: 10.18632/oncotarget.20077] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Accepted: 07/26/2017] [Indexed: 01/09/2023] Open
Abstract
Colorectal carcinoma (CRC) remains one of the leading causes of death in cancer-related diseases. In this study, we aimed to investigate the anticancer effect of Jolkinolide B (JB), a bioactive diterpenoid component isolated from the dried roots of Euphorbia fischeriana Steud, on CRC cells and its underlying mechanisms. We found that JB suppressed the cell viability and colony formation of CRC cells, HT29 and SW620. Annexin V/PI assay revealed that JB induced apoptosis in CRC cells, which was further confirmed by the increased expression of cleaved-caspase3 and cleaved-PARP. iTRAQ-based quantitative proteomics was performed to identify JB-regulated proteins in CRC cells. Gene Ontology (GO) analysis revealed that these JB-regulated proteins were mainly involved in ER stress response, which was evidenced by the expression of ER stress marker proteins, HSP90, Bip and PDI. Moreover, we found that JB provoked the generation of reactive oxygen species (ROS), and that inhibition of the ROS generation with N-acetyl L-cysteine could reverse the JB-induced apoptosis. Confocal microscopy and flow cytometry showed that JB treatment enhanced intracellular and mitochondrial Ca2+ level and JC-1 assay revealed a loss of mitochondrial membrane potential in CRC after JB treatment. The mitochondrial Ca2+ uptake and depolarization can be blocked by Ruthenium Red (RuRed), an inhibitor of mitochondrial Ca2+ uniporter. Taken together, we demonstrated that JB exerts its anticancer effect by ER stress-Ca2+-mitochondria signaling, suggesting the promising chemotherapeutic potential of JB for the treatment of CRC.
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20
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Arslan H, Özdemir S, Altun S. Cypermethrin toxication leads to histopathological lesions and induces inflammation and apoptosis in common carp (Cyprinus carpio L.). CHEMOSPHERE 2017; 180:491-499. [PMID: 28431387 DOI: 10.1016/j.chemosphere.2017.04.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 06/07/2023]
Abstract
Cypermethrin (Cyp), a known neurotoxic pesticide, is widely used in agricultural applications. In the present study, the aim was to determine the histopathological effects of Cyp toxication and evaluate the activation of inducible nitric oxide synthetase (iNOS) and 8-hydroxy-2-deoxyguanosine (8-OHdG) using an immunofluorescence assay. Thereafter, we identified the expressions of caspase 3, capsase 8, iNOS, and metallothionein 1 (MT1) genes in common carp using quantitative reverse transcription polymerase chain reaction (qRT-PCR). High and low doses of Cyp were administered to experimental groups for 24, 48, 72, and 96 h. As a result, necrotic neurons in different stages and desquamation of ependymal cells due to necrosis were detected in the brain. Histopathological changes, including hyperplasia of lamellar cells, telangiectasia of lamellae and thickening due to cellular infiltration in gills, hemorrhage, diffuse hydropic degeneration, and focal necrosis in the liver were observed in the experimental groups. Immunopositive reactions of 8-OHdG were clearly observed in the nuclei and cytoplasm of neurons, and positive reactions for iNOS were detected in the cytoplasm of neurons and in the glial cells of the experimental groups. Furthermore, we found that caspase 3, capsase 8, iNOS, and MT1 genes were up-regulated in the brain when exposed to both high and low doses of Cyp. In conclusion, our findings revealed that Cyp toxication harms the organs of common carp, particularly the brain, and also gives rise to inflammation, DNA damage, and apoptosis. Therefore, the use of Cyp should be restricted to protect the health of aquatic animals.
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Affiliation(s)
- Harun Arslan
- Department of Basic Sciences, Faculty of Fisheries, Ataturk University, Yakutiye, 25240, Erzurum, Turkey.
| | - Selçuk Özdemir
- Department of Genetics, Faculty of Veterinary Medicine, Ataturk University, Yakutiye, 25240, Erzurum, Turkey
| | - Serdar Altun
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Yakutiye, 25240, Erzurum, Turkey
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21
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Arslan H, Altun S, Özdemir S. Acute toxication of deltamethrin results in activation of iNOS, 8-OHdG and up-regulation of caspase 3, iNOS gene expression in common carp (Cyprinus carpio L.). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 187:90-99. [PMID: 28399480 DOI: 10.1016/j.aquatox.2017.03.014] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 06/07/2023]
Abstract
Deltamethrin is a widely used synthetic pyrethroid pesticide that protects agricultural yields, including crops, fruits, and vegetables from insect-pests. It is known that deltamethrin toxication leads to metabolic disorders and has detrimental effects on the brain and liver in different organisms. However, the harmful effects of deltamethrin toxication on aquatic animals remain unclear. In the present study, we aimed to evaluate the adverse effects of deltamethrin toxication by performing a histopathological examination, an immunofluorescence assay, and a qRT-PCR on common carp. We observed that a low-dose (0.04μM) and a high-dose (0.08μM) of deltamethrin exposure caused lamellar cells hyperplasia and inflammatory cells infiltration in the gills, hyperemia, diffuse hydropic degenerations and focal necrosis in the hepatocytes, necrotic changes in the neurons, and also induced activation of inducible Nitric Oxide Synthase (iNOS) and 8-hydroxy-2-deoxyguanosine (8-OHdG) in the gills, liver, and brain depending on the exposure time (24h, 48h, 72h and 96h). In addition, deltamethrin toxication caused the up-regulation of caspase-3 and the inducible Nitric Oxide Synthase (iNOS) of the gene expression depending on the dose (0.04μM and 0.08μM) and the exposure time in the brain (p<0.05, p<0.01, p<0.001). Our results indicated that long-term deltamethrin exposure could lead to inflammation, oxidative stress, DNA damage, and apoptosis on the different organs in common carp. Thus, deltamethrin toxication is dangerous for common carp populations, and the usage of deltamethrin should be controlled and restricted in agricultural areas.
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Affiliation(s)
- Harun Arslan
- Department of Basic Sciences, Faculty of Fisheries, Ataturk University, Yakutiye, 25240, Erzurum, Turkey.
| | - Serdar Altun
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Yakutiye, 25240, Erzurum, Turkey
| | - Selçuk Özdemir
- Department of Genetics, Faculty of Veterinary Medicine, Ataturk University, Yakutiye, 25240, Erzurum, Turkey
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22
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Demirdaş A, Nazıroğlu M, Övey İS. Duloxetine Reduces Oxidative Stress, Apoptosis, and Ca 2+ Entry Through Modulation of TRPM2 and TRPV1 Channels in the Hippocampus and Dorsal Root Ganglion of Rats. Mol Neurobiol 2016; 54:4683-4695. [PMID: 27443158 DOI: 10.1007/s12035-016-9992-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 06/14/2016] [Indexed: 11/29/2022]
Abstract
Overload of Ca2+ entry and excessive oxidative stress in neurons are the two main causes of depression. Activation of transient receptor potential (TRP) vanilloid type 1 (TRPV1) and TRP melastatin 2 (TRPM2) during oxidative stress has been linked to neuronal survival. Duloxetine (DULOX) in neurons reduced the effects of Ca2+ entry and reactive oxygen species (ROS) through glutamate receptors, and this reduction of effects may also occur through TRPM2 and TRPV1 channels. In order to better characterize the actions of DULOX in peripheral pain and hippocampal oxidative injury through modulation of TRPM2 and TRPV1, we tested the effects of DULOX on apoptosis and oxidative stress in the hippocampal and dorsal root ganglion (DRG) neurons of rats. Freshly isolated hippocampal and DRG neurons were incubated for 24 h with DULOX. In whole-cell patch-clamp and intracellular-free calcium ([Ca2+]) concentration (Fura-2) experiments, cumene hydroperoxide and ADP-ribose-induced TRPM2 currents in the neurons were inhibited by N-(p-amylcinnamoyl) anthranilic acid (ACA) and capsaicin-induced TRPV1 currents were inhibited by capsazepine (CPZ) incubations. TRPM2 and TRPV1 channel current densities, [Ca2+] concentration, apoptosis, caspase 3, caspase 9, mitochondrial depolarization, and intracellular ROS production values in the neurons were lower in the DULOX group than in controls. In addition, the above values were further decreased by DULOX + CPZ and DULOX + ACA treatments. In conclusion, TRPM2 and TRPV1 channels are involved in Ca2+ entry-induced neuronal death and modulation of the activity of these channels by DULOX treatment may account for their neuroprotective activity against apoptosis, excessive ROS production, and Ca2+ entry.
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Affiliation(s)
- Arif Demirdaş
- Department of Psychiatry, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Mustafa Nazıroğlu
- Department of Neuroscience, Health Science Institute, Suleyman Demirel University, Isparta, Turkey. .,Neuroscience Research Center, Suleyman Demirel University, 32260, Isparta, Turkey.
| | - İshak Suat Övey
- Department of Neuroscience, Health Science Institute, Suleyman Demirel University, Isparta, Turkey
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23
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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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Poletto V, Dragoni S, Lim D, Biggiogera M, Aronica A, Cinelli M, De Luca A, Rosti V, Porta C, Guerra G, Moccia F. Endoplasmic Reticulum Ca2+Handling and Apoptotic Resistance in Tumor-Derived Endothelial Colony Forming Cells. J Cell Biochem 2016; 117:2260-71. [DOI: 10.1002/jcb.25524] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 02/22/2016] [Indexed: 12/23/2022]
Affiliation(s)
- Valentina Poletto
- Center for the Study of Myelofibrosis, Biotechnology Research Laboratory; Fondazione IRCCS Policlinico San Matteo; Pavia 27100 Italy
| | - Silvia Dragoni
- Laboratory of General Physiology, Department of Biology and Biotechnology “L. Spallanzani”; University of Pavia; Pavia 27100 Italy
| | - Dmitry Lim
- Department of Pharmaceutical Sciences; Università del Piemonte Orientale “Amedeo Avogadro”; Novara 28100 Italy
| | - Marco Biggiogera
- Laboratory of Cell Biology and Neurobiology, Department of Biology and Biotechnology “L. Spallanzani”; University of Pavia; Pavia 27100 Italy
| | - Adele Aronica
- Center for the Study of Myelofibrosis, Biotechnology Research Laboratory; Fondazione IRCCS Policlinico San Matteo; Pavia 27100 Italy
| | - Mariapia Cinelli
- Department of Public Health; University of Naples “Federico II”; Naples 80131 Italy
| | - Antonio De Luca
- Department of Mental and Physical Health and Preventive Medicine, Section of Human Anatomy, Second University of Naples; Largo Madonna delle Grazie 1; Naples 80138 Italy
| | - Vittorio Rosti
- Center for the Study of Myelofibrosis, Biotechnology Research Laboratory; Fondazione IRCCS Policlinico San Matteo; Pavia 27100 Italy
| | - Camillo Porta
- Medical Oncology; Fondazione IRCCS Policlinico San Matteo; Pavia 27100 Italy
| | - Germano Guerra
- Department of Medicine and Health Sciences “Vincenzo Tiberio”; University of Molise; Campobasso 86100 Italy
| | - Francesco Moccia
- Laboratory of General Physiology, Department of Biology and Biotechnology “L. Spallanzani”; University of Pavia; Pavia 27100 Italy
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25
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Investigation of the Effects of Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS) on Apoptosis and Cell Cycle in a Zebrafish (Danio rerio) Liver Cell Line. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 12:15673-82. [PMID: 26690195 PMCID: PMC4690948 DOI: 10.3390/ijerph121215012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 10/19/2015] [Accepted: 11/26/2015] [Indexed: 12/02/2022]
Abstract
This study aimed to explore the effects of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) on apoptosis and cell cycle in a zebrafish (Danio rerio) liver cell line (ZFL). Treatment groups included a control group, PFOA-IC50, PFOA-IC80, PFOS-IC50 and PFOS-IC80 groups. IC50 and IC80 concentrations were identified by cellular modeling and MTT assays. mRNA levels of p53, Bcl-2, Bax, Caspase-3 and NF-κB p65 were detected by qPCR. Cell apoptosis and cell cycle were detected by flow cytometry and the protein levels of p53, Bcl-2, Bax, Caspase-3 and NF-κB p65 were determined by western blotting. Both PFOA and PFOS inhibited the growth of zebrafish liver cells, and the inhibition rate of PFOS was higher than that of PFOA. Bcl-2 expression levels in the four groups were significantly higher than the control group and Bcl-2 increased significantly in the PFOA-IC80 group. However, the expression levels of Bax in the four treatment groups were higher than the control group. The percentage of cell apoptosis increased significantly with the treatment of PFOA and PFOS (p < 0.05). Cell cycle and cell proliferation were blocked in both the PFOA-IC80 and PFOS-IC80 groups, indicating that PFOA-IC80 and PFOS-IC50 enhanced apoptosis in ZFL cells.
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Gao D, Xu Z, Qiao P, Liu S, Zhang L, He P, Zhang X, Wang Y, Min W. Cadmium induces liver cell apoptosis through caspase-3A activation in purse red common carp (Cyprinus carpio). PLoS One 2013; 8:e83423. [PMID: 24349509 PMCID: PMC3861504 DOI: 10.1371/journal.pone.0083423] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 11/03/2013] [Indexed: 12/16/2022] Open
Abstract
Caspase-3, the essential effector caspase, plays a pivotal role during caspase-dependent apoptosis. In this study, we isolated and characterized caspase-3A gene from common carp. The common carp caspase-3A comprising 273 amino acids showed 71.8% sequence similarity and 59.3% sequence identity to human caspase-3. It exhibited an evolutionarily conserved structure of mammalian caspase-3 genes, including a pro-domain, a large subunit, a small subunit and other motifs such as the pentapeptide active-site motif (QACRG) and the putative cleavage sites at the aspartic acids. Phylogenetic analysis demonstrated that common carp caspase-3A formed a clade with cyprinid fish caspase-3. To assess whether caspase-3A is involved in cadmium (Cd)-induced cell apoptosis in common carp, a Cd exposure experiment was performed. TUNEL analysis showed that Cd triggered liver cell apoptosis; caspase-3A activity was markedly increased; its proenzyme level was significantly decreased, and the levels of its cleaved forms were markedly increased. However, real-time quantitative PCR analysis revealed that the mRNA transcript level of caspase-3A was not significantly elevated. Immunoreactivities were observed in the cytoplasm of hepatocytes by immunohistochemical detection. The findings indicates that Cd can trigger liver cell apoptosis through the activation of caspase-3A. Caspase-3A may play an essential role in Cd-induced apoptosis.
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Affiliation(s)
- Dian Gao
- Medical College of Nanchang University, Nanchang, PR China
- Institute of Immunotherapy, Nanchang University, Nanchang, PR China
| | - Zhen’e Xu
- Medical College of Nanchang University, Nanchang, PR China
- Institute of Immunotherapy, Nanchang University, Nanchang, PR China
| | - Panpan Qiao
- Medical College of Nanchang University, Nanchang, PR China
| | - Shen Liu
- Medical College of Nanchang University, Nanchang, PR China
| | - Li Zhang
- Medical College of Nanchang University, Nanchang, PR China
| | - Penghui He
- Medical College of Nanchang University, Nanchang, PR China
| | - Xiaoyan Zhang
- Medical College of Nanchang University, Nanchang, PR China
| | - Yannan Wang
- Medical College of Nanchang University, Nanchang, PR China
| | - Weiping Min
- Medical College of Nanchang University, Nanchang, PR China
- Institute of Immunotherapy, Nanchang University, Nanchang, PR China
- Jiangxi Academy of Medical Sciences, Nanchang, PR China
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Nazıroğlu M, Özgül C. Vitamin E modulates oxidative stress and protein kinase C activator (PMA)-induced TRPM2 channel gate in dorsal root ganglion of rats. J Bioenerg Biomembr 2013; 45:541-9. [PMID: 23943124 DOI: 10.1007/s10863-013-9524-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 07/30/2013] [Indexed: 01/07/2023]
Abstract
It is well known that Ca(2+) influx through cation channels induces peripheral pain in dorsal root ganglion (DRG) neurons. Melastatin-like transient receptor potential 2 (TRPM2) channel is a oxidative redox sensitive Ca(2+)-permeable cation channel. There is scarce report on block of the channels. Since the mechanisms that lead to TRPM2 inhibition in response to oxidative stress and protein kinase C (PKC) activation are not understood, we investigated effects of the antioxidants on the inhibition of TRPM2 channel currents in the DRG neurons of rats. The DRG peripheral neurons were freshly isolated from rats and the neurons were incubated by phorbol 12-myristate 13-acetate (PMA) which leads to activation of PKC and cause oxidative stress. In whole-cell patch clamp experiments, TRPM2 currents in the DRG incubated with PMA were stimulated by H2O2. In addition, the PMA-induced activation of TRPM2 channels were blocked by nonspecific TRPM2 channels inhibitors [2-aminoethyl diphenylborinate (2-APB) and N-(p-amylcinnamoyl)anthranilic acid (ACA)]. The currents in the neurons are also totally blocked by vitamin E incubation. However, administration of catalase and vitamin C with/without the vitamin E incubation did not block the currents. In conclusion, we indicated that vitamin E modulated oxidative stress-induced TRPM2 channel activation in the DRG neurons. The results may be useful modulation of oxidative stress-induced peripheral pain in sensory neurons.
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Affiliation(s)
- Mustafa Nazıroğlu
- Neuroscience Research Center, University of Suleyman Demirel, Isparta, Turkey,
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Inhibition of mitochondrial cytochrome c oxidase potentiates Aβ-induced ER stress and cell death in cortical neurons. Mol Cell Neurosci 2013; 52:1-8. [DOI: 10.1016/j.mcn.2012.09.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2011] [Revised: 08/31/2012] [Accepted: 09/21/2012] [Indexed: 12/14/2022] Open
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Targeting β-tubulin:CCT-β complexes incurs Hsp90- and VCP-related protein degradation and induces ER stress-associated apoptosis by triggering capacitative Ca2+ entry, mitochondrial perturbation and caspase overactivation. Cell Death Dis 2012. [PMID: 23190606 PMCID: PMC3542608 DOI: 10.1038/cddis.2012.173] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We have previously demonstrated that interrupting the protein–protein interaction (PPI) of β-tubulin:chaperonin-containing TCP-1β (CCT-β) induces the selective killing of multidrug-resistant cancer cells due to CCT-β overexpression. However, the molecular mechanism has not yet been identified. In this study, we found that CCT-β interacts with a myriad of intracellular proteins involved in the cellular functions of the endoplasmic reticulum (ER), mitochondria, cytoskeleton, proteasome and apoptosome. Our data show that the targeted cells activate both the heat-shock protein 90 (Hsp90)-associated protein ubiquitination/degradation pathway to eliminate misfolded proteins in the cytoplasm and the valosin-containing protein (VCP)-centered ER-associated protein degradation pathway to reduce the excessive levels of unfolded polypeptides from the ER, thereby mitigating ER stress, at the onset of β-tubulin:CCT-β complex disruption. Once ER stress is expanded, ER stress-associated apoptotic signaling is enforced, as exhibited by cellular vacuolization and intracellular Ca2+ release. Furthermore, the elevated intracellular Ca2+ levels resulting from capacitative Ca2+ entry augments apoptotic signaling by provoking mitochondrial perturbation and caspase overactivation in the targeted cells. These findings not only provide a detailed picture of the apoptotic signaling cascades evoked by targeting the β-tubulin:CCT-β complex but also demonstrate a strategy to combat malignancies with chemoresistance to Hsp90- and VCP-related anticancer agents.
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Lawal AO, Ellis EM. Phospholipase C Mediates Cadmium-Dependent Apoptosis in HEK 293 Cells. Basic Clin Pharmacol Toxicol 2012; 110:510-7. [DOI: 10.1111/j.1742-7843.2011.00843.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Nascimento FD, Sancey L, Pereira A, Rome C, Oliveira V, Oliveira EB, Nader HB, Yamane T, Kerkis I, Tersariol ILS, Coll JL, Hayashi MAF. The Natural Cell-Penetrating Peptide Crotamine Targets Tumor Tissue in Vivo and Triggers a Lethal Calcium-Dependent Pathway in Cultured Cells. Mol Pharm 2011; 9:211-21. [DOI: 10.1021/mp2000605] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fabio D. Nascimento
- Grupo de Estudos em Odontologia, Universidade Bandeirante de São Paulo (UNIBAN), São Paulo, SP,
Brazil
| | - Lucie Sancey
- INSERM U823, Institut Albert Bonniot, Grenoble, France
- University Joseph Fourier, Grenoble, France
| | | | - Claire Rome
- INSERM U823, Institut Albert Bonniot, Grenoble, France
- University Joseph Fourier, Grenoble, France
| | - Vitor Oliveira
- Departamento
de Biofísica, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Eduardo B. Oliveira
- Departamento de Bioquímica
e Imunologia, Universidade de São Paulo (USP), Ribeirão Preto, Brazil
| | - Helena B. Nader
- Departamento de Bioquímica, Universidade Federal de São Paulo (UNIFESP), São Paulo,
Brazil
| | - Tetsuo Yamane
- Laboratório
de Bioquímica e Biologia Molecular, Centro de Biotecnologia da Amazônia (CBA), Manaus, AM,
Brazil
| | - Irina Kerkis
- Laboratório
de Genética, Instituto Butantan,
São Paulo, SP, Brasil
| | - Ivarne L. S. Tersariol
- Centro Interdisciplinar
de Investigação Bioquímica (CIIB), Universidade de Mogi das Cruzes, Mogi das Cruzes, SP,
Brazil
| | - Jean-Luc Coll
- INSERM U823, Institut Albert Bonniot, Grenoble, France
- University Joseph Fourier, Grenoble, France
| | - Mirian A. F. Hayashi
- Departamento de Farmacologia, Universidade Federal de São Paulo (UNIFESP),
São Paulo, SP, Brazil
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Zhao YL, Xiang Q, Shi QY, Li SY, Tan L, Wang JT, Jin XG, Luo AL. GABAergic excitotoxicity injury of the immature hippocampal pyramidal neurons' exposure to isoflurane. Anesth Analg 2011; 113:1152-60. [PMID: 21918167 DOI: 10.1213/ane.0b013e318230b3fd] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Certain anesthetics exhibit neurotoxicity in the brains of immature but not mature animals. γ-Aminobutyric acid (GABA), the primary inhibitory neurotransmitter in the adult brain, is excitatory on immature neurons via its action at the GABAA receptor, depolarizing the membrane potential and inducing a cytosolic Ca2+ increase ([Ca2+]i), because of a reversed transmembrane chloride gradient. Recent experimental data from several rodent studies have demonstrated that exposure to isoflurane during an initial phase causes neuronal excitotoxicity and apoptosis. GABAA receptor-mediated synaptic voltage-dependent calcium channels' (VDCCs) overactivation and Ca2+ influx are involved in these neural changes. METHODS We monitored [Ca2+]i using Fluo-4 AM fluorescence imaging. Using whole-cell patch clamp techniques, IVDCC (voltage-dependent calcium channel currents) were recorded from primary cultures of rat hippocampal neurons (5-day culture) exposed to isoflurane. To further investigate the neurotoxicity of high cytosolic-free calcium after isoflurane in a dose- and time-dependent manner, the possibility of increased caspase-3 levels was evaluated by Western blot and quantitative real-time polymerase chain reaction. Statistical significance was assessed using the Student t test or 1-way analysis of variance followed by the Tukey post hoc test. RESULTS Under control conditions, isoflurane enhanced the GABA-induced [Ca2+]i increase in a dose-dependent manner. Dantrolene and nicardipine markedly inhibited this enhancement mediated by isoflurane. Moreover, in Ca2+-free media, pretreatment with isoflurane did not show any influence on the caffeine-induced increase of [Ca2+]i. Similarly, using whole-cell recording, isoflurane increased the peak amplitude of IVDCC in the cultured neurons from rat hippocampus by depolarization pulses. Isoflurane (0.25, 0.5, 0.75, and 1 minimum alveolar concentration [MAC]) potentiated IVDCC peak current amplitude by 109.11%±9.03%, 120.56%±11.46%, 141.33%±13.87%, and 146.78%±15.87%, respectively. To analyze variation in protein levels, the effect of treatments with isoflurane on caspase-3 activity was dose- and time-dependent, reaching a maximal caspase-3 activity after exposure to 1 MAC for 6 hours (P<0.001). However, in the mRNA levels, hippocampal caspase-3 mRNA levels began to be significantly increased in isoflurane-treated developing rat hippocampal neurons after 6 hours of exposure to 0.25 MAC isoflurane (P<0.001). CONCLUSIONS Isoflurane-mediated enhancement of GABA-triggered [Ca2+]i release results from membrane depolarization with subsequent activation of VDCCs and further Ca2+-induced Ca2+ release from the ryanodine-sensitizing Ca2+ store. An increase in [Ca2+]i, caused by activation of the GABAA receptor and opening of VDCCs, is necessary for isoflurane-induced calcium overload of immature rat hippocampal neurons, which may be involved in the mechanism of an isoflurane-induced neurotoxic effect in the developing rodent brain.
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Affiliation(s)
- Y L Zhao
- Department of Anesthesiology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 JieFang Rd., Wuhan, Hubei, 430030, China
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Singh BK, Tripathi M, Pandey PK, Kakkar P. Alteration in mitochondrial thiol enhances calcium ion dependent membrane permeability transition and dysfunction in vitro: a cross-talk between mtThiol, Ca(2+), and ROS. Mol Cell Biochem 2011; 357:373-85. [PMID: 21748338 DOI: 10.1007/s11010-011-0908-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Accepted: 05/28/2011] [Indexed: 12/16/2022]
Abstract
Mitochondrial permeability transition (MPT) and dysfunctions play a pivotal role in many patho-physiological and toxicological conditions. The interplay of mitochondrial thiol (mtThiol), MPT, Ca(2+) homeostasis, and resulting dysfunctions still remains controversial despite studies by several research groups. Present study was undertaken to ascertain the correlation between Ca(2+) homeostasis, mtThiol alteration and reactive oxygen species (ROS) in causing MPT leading to mitochondrial dysfunction. mtThiol depletion significantly enhanced Ca(2+) dependent MPT (swelling) and depolarization of mitochondria resulting in release of pro-apoptotic proteins like Cyt c, AIF, and EndoG. mtThiol alteration and Ca(2+) overload caused reduced mitochondrial electron flow, oxidation of pyridine nucleotides (NAD(P)H) and significantly enhanced ROS generation (DHE and DCFH-DA fluorescence). Studies with MPT inhibitor (Cyclosporin A), Ca(2+) uniport blocker (ruthenium red) and Ca(2+) chelator (BAPTA) indicated that mitochondrial dysfunction was more pronounced under dual stress of altered mtThiol and Ca(2+) overload in comparison with single stress of excessive Ca(2+). Transmission electron microscopy confirmed the changes in mitochondrial integrity under stress. Our findings suggest that the Ca(2+) overload itself is not solely responsible for structural and functional impairment of mitochondria. A multi-factorial cross-talk between mtThiol, Ca(2+) and ROS is responsible for mitochondrial dysfunction. Furthermore, minor depletion of mtThiol was found to be an important factor along with Ca(2+) overload in triggering MPT in isolated mitochondria, tilting the balance towards disturbed functionality.
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Affiliation(s)
- Brijesh Kumar Singh
- Herbal Research Section, Indian Institute of Toxicology Research, Formerly-Industrial Toxicology Research Centre, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
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Costa RO, Ferreiro E, Martins I, Santana I, Cardoso SM, Oliveira CR, Pereira CMF. Amyloid β-induced ER stress is enhanced under mitochondrial dysfunction conditions. Neurobiol Aging 2011; 33:824.e5-16. [PMID: 21704433 DOI: 10.1016/j.neurobiolaging.2011.04.011] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 04/13/2011] [Accepted: 04/29/2011] [Indexed: 01/10/2023]
Abstract
Previously we reported that endoplasmic reticulum (ER)-mitochondria crosstalk is involved in amyloid-β (Aβ)-induced apoptosis. Now we show that mitochondrial dysfunction affects the ER stress response triggered by Aβ using cybrids that recreate the defect in mitochondrial cytochrome c oxidase (COX) activity detected in platelets from Alzheimer's disease (AD) patients. AD and control cybrids were treated with Aβ or classical ER stressors and the ER stress-mediated apoptotic cell death pathway was accessed. Upon treatment, we found increased glucose-regulated protein 78 (GRP78) levels and caspase-4 activation (ER stress markers) which were more pronounced in AD cybrids. Treated AD cybrids also exhibited decreased cell survival as well as increased caspase-3-like activity, poli-ADP-ribose-polymerase (PARP) levels and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL)-positive apoptotic cells. Finally, we showed that Aβ-induced caspase-3 activation in both cybrid cell lines was prevented by dantrolene, thus implicating ER Ca(2+) release in ER stress-mediated apoptosis. Our results demonstrate that mitochondrial dysfunction occurring in AD patients due to COX inhibition potentiates cell susceptibility to Aβ-induced ER stress. This study further supports the close communication between ER and mitochondria during apoptosis in AD.
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Affiliation(s)
- Rui O Costa
- Centre for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
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Uğuz AC, Naziroğlu M, Espino J, Bejarano I, González D, Rodríguez AB, Pariente JA. Selenium modulates oxidative stress-induced cell apoptosis in human myeloid HL-60 cells through regulation of calcium release and caspase-3 and -9 activities. J Membr Biol 2009; 232:15-23. [PMID: 19898892 DOI: 10.1007/s00232-009-9212-2] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Accepted: 10/08/2009] [Indexed: 01/27/2023]
Abstract
Selenium is an essential chemopreventive antioxidant element to oxidative stress, although high concentrations of selenium induce toxic and oxidative effects on the human body. However, the mechanisms behind these effects remain elusive. We investigated toxic effects of different selenium concentrations in human promyelocytic leukemia HL-60 cells by evaluating Ca(2+) mobilization, cell viability and caspase-3 and -9 activities at different sample times. We found the toxic concentration and toxic time of H(2)O(2) as 100 microM: and 10 h on cell viability in the cells using four different concentrations of H(2)O(2) (1 microM: -1 mM: ) and six different incubation times (30 min, 1, 2, 5, 10, 24 h). Then, we found the therapeutic concentration of selenium to be 200 nM: by cells incubated in eight different concentrations of selenium (10 nM: -1 mM: ) for 1 h. We measured Ca(2+) release, cell viability and caspase-3 and -9 activities in cells incubated with high and low selenium concentrations at 30 min and 1, 2, 5, 10 and 24 h. Selenium (200 nM: ) elicited mild endoplasmic reticulum stress and mediated cell survival by modulating Ca(2+) release, the caspases and cell apoptosis, whereas selenium concentrations as high as 1 mM: induced severe endoplasmic reticulum stress and caused cell death by activating modulating Ca(2+) release, the caspases and cell apoptosis. In conclusion, these results explained the molecular mechanisms of the chemoprotective effect of different concentrations of selenium on oxidative stress-induced apoptosis.
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