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Ziakova K, Kovalska M, Pilchova I, Dibdiakova K, Brodnanova M, Pokusa M, Kalenska D, Racay P. Involvement of Proteasomal and Endoplasmic Reticulum Stress in Neurodegeneration After Global Brain Ischemia. Mol Neurobiol 2023; 60:6316-6329. [PMID: 37452223 PMCID: PMC10533597 DOI: 10.1007/s12035-023-03479-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 07/03/2023] [Indexed: 07/18/2023]
Abstract
A brief period of transient global brain ischemia leads to selective ischemic neurodegeneration associated with death of hippocampal CA1 pyramidal neurons days after reperfusion. The mechanism of such selective and delayed neurodegeneration is still uncertain. Our work aimed to study the involvement of proteasomal and endoplasmic reticulum (ER) stress in ischemic neurodegeneration. We have performed laser scanning confocal microscopy analysis of brain slices from control and experimental animals that underwent global brain ischemia for 15 min and varying times of reperfusion. We have focused on ubiquitin, PUMA, a proapoptotic protein of the Bcl-2 family overexpressed in response to both proteasomal and ER stress, and p53, which controls expression of PUMA. We have also examined the expression of HRD1, an E3 ubiquitin ligase that was shown to be overexpressed after ER stress. We have also examined potential crosstalk between proteasomal and ER stress using cellular models of both proteasomal and ER stress. We demonstrate that global brain ischemia is associated with an appearance of distinct immunoreactivity of ubiquitin, PUMA and p53 in pyramidal neurons of the CA1 layer of the hippocampus 72 h after ischemic insults. Such changes correlate with a delay and selectivity of ischemic neurodegeneration. Immunoreactivity of HRD1 observed in all investigated regions of rat brain was transiently absent in both CA1 and CA3 pyramidal neurones 24 h after ischemia in the hippocampus, which does not correlate with a delay and selectivity of ischemic neurodegeneration. We do not document significant crosstalk between proteasomal and ER stress. Our results favour dysfunction of the ubiquitin proteasome system and consequent p53-induced expression of PUMA as the main mechanisms responsible for selective and delayed degeneration of pyramidal neurons of the hippocampal CA1 layer in response to global brain ischemia.
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Affiliation(s)
- Katarina Ziakova
- Biomedical Center, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Maria Kovalska
- Department of Histology and Embryology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Ivana Pilchova
- Biomedical Center, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Katarina Dibdiakova
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Mala Hora 4D, SK-03601, Martin, Slovak Republic
| | - Maria Brodnanova
- Biomedical Center, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Michal Pokusa
- Biomedical Center, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Dagmar Kalenska
- Department of Anatomy, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Peter Racay
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Mala Hora 4D, SK-03601, Martin, Slovak Republic.
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Evinova A, Hatokova Z, Tatarkova Z, Brodnanova M, Dibdiakova K, Racay P. Endoplasmic reticulum stress induces mitochondrial dysfunction but not mitochondrial unfolded protein response in SH-SY5Y cells. Mol Cell Biochem 2022; 477:965-975. [DOI: 10.1007/s11010-021-04344-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 12/22/2021] [Indexed: 12/06/2022]
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Cibulka M, Brodnanova M, Grendar M, Necpal J, Benetin J, Han V, Kurca E, Nosal V, Skorvanek M, Vesely B, Stanclova A, Lasabova Z, Pös Z, Szemes T, Stuchlik S, Grofik M, Kolisek M. Alzheimer's Disease-Associated SNP rs708727 in SLC41A1 May Increase Risk for Parkinson's Disease: Report from Enlarged Slovak Study. Int J Mol Sci 2022; 23:ijms23031604. [PMID: 35163527 PMCID: PMC8835868 DOI: 10.3390/ijms23031604] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023] Open
Abstract
SLC41A1 (A1) SNPs rs11240569 and rs823156 are associated with altered risk for Parkinson's disease (PD), predominantly in Asian populations, and rs708727 has been linked to Alzheimer's disease (AD). In this study, we have examined a potential association of the three aforementioned SNPs and of rs9438393, rs56152218, and rs61822602 (all three lying in the A1 promoter region) with PD in the Slovak population. Out of the six tested SNPs, we have identified only rs708727 as being associated with an increased risk for PD onset in Slovaks. The minor allele (A) in rs708727 is associated with PD in dominant and completely over-dominant genetic models (ORD = 1.36 (1.05-1.77), p = 0.02, and ORCOD = 1.34 (1.04-1.72), p = 0.02). Furthermore, the genotypic triplet GG(rs708727) + AG(rs823156) + CC(rs61822602) might be clinically relevant despite showing a medium (h ≥ 0.5) size difference (h = 0.522) between the PD and the control populations. RandomForest modeling has identified the power of the tested SNPs for discriminating between PD-patients and the controls to be essentially zero. The identified association of rs708727 with PD in the Slovak population leads us to hypothesize that this A1 polymorphism, which is involved in the epigenetic regulation of the expression of the AD-linked gene PM20D1, is also involved in the pathoetiology of PD (or universally in neurodegeneration) through the same or similar mechanism as in AD.
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Affiliation(s)
- Michal Cibulka
- Biomedical Centre Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia; (M.C.); (M.B.); (M.G.)
| | - Maria Brodnanova
- Biomedical Centre Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia; (M.C.); (M.B.); (M.G.)
| | - Marian Grendar
- Biomedical Centre Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia; (M.C.); (M.B.); (M.G.)
| | - Jan Necpal
- Clinic of Neurology, AGEL Hospital in Zvolen, 96001 Zvolen, Slovakia;
| | - Jan Benetin
- Clinic of Neurology, University Hospital Bratislava, Slovak Medical University in Bratislava, 83303 Bratislva, Slovakia;
| | - Vladimir Han
- Clinic of Neurology, University Hospital of L. Pasteur in Kosice, University of Pavol Jozef Safarik, 04066 Kosice, Slovakia; (V.H.); (M.S.)
| | - Egon Kurca
- Clinic of Neurology, University Hospital Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia; (E.K.); (V.N.)
| | - Vladimir Nosal
- Clinic of Neurology, University Hospital Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia; (E.K.); (V.N.)
| | - Matej Skorvanek
- Clinic of Neurology, University Hospital of L. Pasteur in Kosice, University of Pavol Jozef Safarik, 04066 Kosice, Slovakia; (V.H.); (M.S.)
| | - Branislav Vesely
- Clinic of Neurology, Faculty Hospital in Nitra, Constantine the Philosopher University in Nitra, 94901 Nitra, Slovakia;
| | - Andrea Stanclova
- Institute of Molecular Biology and Genomics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia; (A.S.); (Z.L.)
| | - Zora Lasabova
- Institute of Molecular Biology and Genomics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia; (A.S.); (Z.L.)
| | - Zuzana Pös
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, 84104 Bratislava, Slovakia; (Z.P.); (T.S.); (S.S.)
- GENETON s.r.o., 84104 Bratislava, Slovakia
| | - Tomas Szemes
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, 84104 Bratislava, Slovakia; (Z.P.); (T.S.); (S.S.)
- GENETON s.r.o., 84104 Bratislava, Slovakia
| | - Stanislav Stuchlik
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, 84104 Bratislava, Slovakia; (Z.P.); (T.S.); (S.S.)
| | - Milan Grofik
- Clinic of Neurology, University Hospital Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia; (E.K.); (V.N.)
- Correspondence: (M.G.); (M.K.)
| | - Martin Kolisek
- Biomedical Centre Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia; (M.C.); (M.B.); (M.G.)
- Correspondence: (M.G.); (M.K.)
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Brodnanova M, Hatokova Z, Evinova A, Cibulka M, Racay P. Differential impact of imipramine on thapsigargin- and tunicamycin-induced endoplasmic reticulum stress and mitochondrial dysfunction in neuroblastoma SH-SY5Y cells. Eur J Pharmacol 2021; 902:174073. [PMID: 33798597 DOI: 10.1016/j.ejphar.2021.174073] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 03/18/2021] [Accepted: 03/26/2021] [Indexed: 01/10/2023]
Abstract
The aim of our work was to study effect of antidepressant imipramine on both thapsigargin- and tunicamycin-induced ER stress and mitochondrial dysfunction in neuroblastoma SH-SY5Y cells. ER stress in SH-SY5Y cells was induced by either tunicamycin or thapsigargin in the presence or absence of imipramine. Cell viability was tested by the MTT assay. Splicing of XBP1 mRNA was studied by RT-PCR. Finally, expression of Hrd1 and Hsp60 was determined by Western blot analysis. Our findings provide evidence that at high concentrations imipramine potentiates ER stress-induced death of SH-SY5Y cells. The effect of imipramine on ER stress-induced death of SH-SY5Y cells was stronger in combination of imipramine with thapsigargin. In addition, we have found that treatment of SH-SY5Y cells with imipramine in combination of either thapsigargin or tunicamycin is associated with the alteration of ER stress-induced IRE1α-XBP1 signalling. Despite potentiation of ER stress-induced XBP1 splicing, imipramine suppresses both thapsigargin- and tunicamycin-induced expression of Hrd1. Finally, imipramine in combination with thapsigargin, but not tunicamycin, aggravates ER stress-induced mitochondrial dysfunction without significant impact on intracellular mitochondrial content as indicated by the unaltered expression of Hsp60. Our results indicate the possibility that chronic treatment with imipramine might be associated with a higher risk of development and progression of neurodegenerative disorders, in particular those allied with ER stress and mitochondrial dysfunction like Parkinson's and Alzheimer's disease.
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Affiliation(s)
- Maria Brodnanova
- Department of Medical Biochemistry, Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin (JFM CU), Mala Hora 4D, SK-03601 Martin, Slovakia
| | | | | | | | - Peter Racay
- Department of Medical Biochemistry, Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin (JFM CU), Mala Hora 4D, SK-03601 Martin, Slovakia.
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Cibulka M, Brodnanova M, Grendar M, Grofik M, Kurca E, Pilchova I, Osina O, Tatarkova Z, Dobrota D, Kolisek M. SNPs rs11240569, rs708727, and rs823156 in SLC41A1 Do Not Discriminate Between Slovak Patients with Idiopathic Parkinson's Disease and Healthy Controls: Statistics and Machine-Learning Evidence. Int J Mol Sci 2019; 20:ijms20194688. [PMID: 31546642 PMCID: PMC6801379 DOI: 10.3390/ijms20194688] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 09/17/2019] [Accepted: 09/19/2019] [Indexed: 12/28/2022] Open
Abstract
Gene SLC41A1 (A1) is localized within Parkinson’s disease-(PD)-susceptibility locus PARK16 and encodes for the Na+/Mg2+-exchanger. The association of several A1 SNPs with PD has been studied. Two, rs11240569 and rs823156, have been associated with reduced PD-susceptibility primarily in Asian populations. Here, we examined the association of rs11240569, rs708727, and rs823156 with PD in the Slovak population and their power to discriminate between PD patients and healthy controls. The study included 150 PD patients and 120 controls. Genotyping was performed with the TaqMan® approach. Data were analyzed by conventional statistics and Random Forest machine-learning (ML) algorithm. Individually, none of the three SNPs is associated with an altered risk for PD-onset in Slovaks. However, a combination of genotypes of SNP-triplet GG(rs11240569)/AG(rs708727)/AA(rs823156) is significantly (p < 0.05) more frequent in the PD (13.3%) than in the control (5%) cohort. ML identified the power of the tested SNPs in isolation or of their singlets (joined), duplets and triplets to discriminate between PD-patients and healthy controls as zero. Our data further substantiate differences between diverse populations regarding the association of A1 polymorphisms with PD-susceptibility. Lack of power of the tested SNPs to discriminate between PD and healthy cases render their clinical/diagnostic relevance in the Slovak population negligible.
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Affiliation(s)
- Michal Cibulka
- Division of Neurosciences, Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
| | - Maria Brodnanova
- Division of Neurosciences, Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
| | - Marian Grendar
- Department of Bioinformatics, Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
| | - Milan Grofik
- Clinic of Neurology, University Hospital in Martin, 03601 Martin, Slovakia.
| | - Egon Kurca
- Clinic of Neurology, University Hospital in Martin, 03601 Martin, Slovakia.
| | - Ivana Pilchova
- Division of Neurosciences, Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
| | - Oto Osina
- Clinic of Occupational Medicine and Toxicology, University Hospital in Martin, 03601 Martin, Slovakia.
| | - Zuzana Tatarkova
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
| | - Dusan Dobrota
- Division of Neurosciences, Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
| | - Martin Kolisek
- Division of Neurosciences, Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 03601 Martin, Slovakia.
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