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Barabási B, Barna L, Santa-Maria AR, Harazin A, Molnár R, Kincses A, Vigh JP, Dukay B, Sántha M, Tóth ME, Walter FR, Deli MA, Hoyk Z. Role of interleukin-6 and interleukin-10 in morphological and functional changes of the blood-brain barrier in hypertriglyceridemia. Fluids Barriers CNS 2023; 20:15. [PMID: 36882782 PMCID: PMC9990353 DOI: 10.1186/s12987-023-00418-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 10/25/2022] [Accepted: 02/24/2023] [Indexed: 03/09/2023] Open
Abstract
BACKGROUND Hypertriglyceridemia is closely linked to atherosclerosis related inflammatory processes and blood-brain barrier (BBB) dysfunction. Using apolipoprotein B-100 (APOB-100) transgenic mice, an animal model of chronic hypertriglyceridemia, we analyzed BBB function and morphology in vitro and ex vivo. Our objective was to determine which BBB characteristics are produced mainly by interleukin (IL)-6, an atherosclerosis promoting cytokine, and whether these actions can be antagonized by IL-10, an anti-inflammatory cytokine. METHODS Brain endothelial and glial cell cultures and brain microvessels were isolated from wild type (WT) and APOB-100 transgenic mice and were treated with IL-6, IL-10 and their combination. First, IL-6 and IL-10 production was measured in WT and APOB-100 microvessels using qPCR. Then functional parameters of endothelial cell cultures were analyzed and immunocytochemistry for key BBB proteins was performed. RESULTS IL-6 mRNA levels were higher in brain microvessels than in brain parenchyma of APOB-100 transgenic mice. Transendothelial electric resistance and P-glycoprotein activity were lower, and paracellular permeability was higher in cultured APOB-100 brain endothelial cells. These features were sensitive to both IL-6 and IL-10 treatments. A decreased P-glycoprotein immunostaining was measured in transgenic endothelial cells under control conditions and in WT cells after treating them with IL-6. This effect was antagonized by IL-10. Changes in immunostaining for tight junction proteins were observed after IL-6 exposure, which were in part antagonized by IL-10. In glial cell cultures an increase in aquaporin-4 immunolabeling in the transgenic group and an increase in microglia cell density in WT glia cultures was detected after IL-6 treatment, which was antagonized by IL-10. In isolated brain microvessels a decrease in P-glycoprotein immunolabeled area fraction was measured in APOB-100 microvessels under control conditions and in WT microvessels after every cytokine treatment. ZO-1 immunolabeling showed characteristics similar to that of P-glycoprotein. No change was seen in claudin-5 and occludin immunoreactive area fractions in microvessels. A decrease in aquaporin-4 immunoreactivity was measured in WT microvessels treated by IL-6, which was antagonized by IL-10. CONCLUSION IL-6 produced in microvessels contributes to BBB impairment observed in the APOB-100 mice. We showed that IL-10 partly antagonizes the effects of IL-6 at the BBB.
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Affiliation(s)
- Beáta Barabási
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary.,Doctoral School of Theoretical Medicine, University of Szeged, Tisza L. Krt. 109, Szeged, 6725, Hungary
| | - Lilla Barna
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary
| | - Ana Raquel Santa-Maria
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary.,Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, MA, 02115, USA
| | - András Harazin
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary
| | - Réka Molnár
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary
| | - András Kincses
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary
| | - Judit P Vigh
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary
| | - Brigitta Dukay
- Institute of Biochemistry, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary
| | - Miklós Sántha
- Institute of Biochemistry, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary
| | - Melinda E Tóth
- Institute of Biochemistry, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary
| | - Fruzsina R Walter
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary.
| | - Mária A Deli
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary.
| | - Zsófia Hoyk
- Institute of Biophysics, Biological Research Centre, Temesvári Krt. 62, Szeged, 6726, Hungary.
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2
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Tóth ME, Sárközy M, Szűcs G, Dukay B, Hajdu P, Zvara Á, Puskás LG, Szebeni GJ, Ruppert Z, Csonka C, Kovács F, Kriston A, Horváth P, Kővári B, Cserni G, Csont T, Sántha M. Exercise training worsens cardiac performance in males but does not change ejection fraction and improves hypertrophy in females in a mouse model of metabolic syndrome. Biol Sex Differ 2022; 13:5. [PMID: 35101146 PMCID: PMC8805345 DOI: 10.1186/s13293-022-00414-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 01/05/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Metabolic syndrome (MetS) refers to a cluster of co-existing cardio-metabolic risk factors, including visceral obesity, dyslipidemia, hyperglycemia with insulin resistance, and hypertension. As there is a close link between MetS and cardiovascular diseases, we aimed to investigate the sex-based differences in MetS-associated heart failure (HF) and cardiovascular response to regular exercise training (ET). METHODS High-fat diet-fed male and female APOB-100 transgenic (HFD/APOB-100, 3 months) mice were used as MetS models, and age- and sex-matched C57BL/6 wild-type mice on standard diet served as healthy controls (SD/WT). Both the SD/WT and HFD/APOB-100 mice were divided into sedentary and ET groups, the latter running on a treadmill (0.9 km/h) for 45 min 5 times per week for 7 months. At month 9, transthoracic echocardiography was performed to monitor cardiac function and morphology. At the termination of the experiment at month 10, blood was collected for serum low-density lipoprotein (LDL)- and high-density lipoprotein (HDL)-cholesterol measurements and homeostatic assessment model for insulin resistance (HOMA-IR) calculation. Cardiomyocyte hypertrophy and fibrosis were assessed by histology. Left ventricular expressions of selected genes associated with metabolism, inflammation, and stress response were investigated by qPCR. RESULTS Both HFD/APOB-100 males and females developed obesity and hypercholesterolemia; however, only males showed insulin resistance. ET did not change these metabolic parameters. HFD/APOB-100 males showed echocardiographic signs of mild HF with dilated ventricles and thinner walls, whereas females presented the beginning of left ventricular hypertrophy. In response to ET, SD/WT males developed increased left ventricular volumes, whereas females responded with physiologic hypertrophy. Exercise-trained HFD/APOB-100 males presented worsening HF with reduced ejection fraction; however, ET did not change the ejection fraction and reversed the echocardiographic signs of left ventricular hypertrophy in HFD/APOB-100 females. The left ventricular expression of the leptin receptor was higher in females than males in the SD/WT groups. Left ventricular expression levels of stress response-related genes were higher in the exercise-trained HFD/APOB-100 males and exercise-trained SD/WT females than exercise-trained SD/WT males. CONCLUSIONS HFD/APOB-100 mice showed sex-specific cardiovascular responses to MetS and ET; however, left ventricular gene expressions were similar between the groups except for leptin receptor and several stress response-related genes.
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Affiliation(s)
- Melinda E. Tóth
- grid.481814.00000 0004 0479 9817Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary
| | - Márta Sárközy
- MEDICS Research Group, Department of Biochemistry, University of Szeged Albert Szent-Györgyi Medical School, Dóm tér 9, Szeged, 6720, Hungary. .,Interdisciplinary Center of Excellence, University of Szeged, Dugonics tér 13, Szeged, 6720, Hungary.
| | - Gergő Szűcs
- grid.9008.10000 0001 1016 9625MEDICS Research Group, Department of Biochemistry, University of Szeged Albert Szent-Györgyi Medical School, Dóm tér 9, Szeged, 6720 Hungary ,grid.9008.10000 0001 1016 9625Interdisciplinary Center of Excellence, University of Szeged, Dugonics tér 13, Szeged, 6720 Hungary
| | - Brigitta Dukay
- grid.481814.00000 0004 0479 9817Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary
| | - Petra Hajdu
- grid.481814.00000 0004 0479 9817Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary
| | - Ágnes Zvara
- grid.418331.c0000 0001 2195 9606Laboratory of Functional Genomics, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary
| | - László G. Puskás
- grid.418331.c0000 0001 2195 9606Laboratory of Functional Genomics, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary
| | - Gábor J. Szebeni
- grid.418331.c0000 0001 2195 9606Laboratory of Functional Genomics, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary
| | - Zsófia Ruppert
- grid.481814.00000 0004 0479 9817Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary ,grid.9008.10000 0001 1016 9625Doctoral School in Biology, University of Szeged, Szeged, Hungary
| | - Csaba Csonka
- grid.9008.10000 0001 1016 9625MEDICS Research Group, Department of Biochemistry, University of Szeged Albert Szent-Györgyi Medical School, Dóm tér 9, Szeged, 6720 Hungary ,grid.9008.10000 0001 1016 9625Interdisciplinary Center of Excellence, University of Szeged, Dugonics tér 13, Szeged, 6720 Hungary
| | - Ferenc Kovács
- grid.481814.00000 0004 0479 9817Synthetic and Systems Biology Unit, Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary ,Single-Cell Technologies Ltd, Temesvári krt. 62, Szeged, 6726 Hungary
| | - András Kriston
- grid.481814.00000 0004 0479 9817Synthetic and Systems Biology Unit, Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary ,Single-Cell Technologies Ltd, Temesvári krt. 62, Szeged, 6726 Hungary
| | - Péter Horváth
- grid.481814.00000 0004 0479 9817Synthetic and Systems Biology Unit, Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary ,Single-Cell Technologies Ltd, Temesvári krt. 62, Szeged, 6726 Hungary ,grid.7737.40000 0004 0410 2071Institute for Molecular Medicine Finland (FIMM), University of Helsinki, 00014 Helsinki, Finland
| | - Bence Kővári
- grid.9008.10000 0001 1016 9625Department of Pathology, Albert Szent-Györgyi Medical School, University of Szeged, Állomás utca 1, Szeged, 6720 Hungary
| | - Gábor Cserni
- grid.9008.10000 0001 1016 9625Department of Pathology, Albert Szent-Györgyi Medical School, University of Szeged, Állomás utca 1, Szeged, 6720 Hungary
| | - Tamás Csont
- grid.9008.10000 0001 1016 9625MEDICS Research Group, Department of Biochemistry, University of Szeged Albert Szent-Györgyi Medical School, Dóm tér 9, Szeged, 6720 Hungary ,grid.9008.10000 0001 1016 9625Interdisciplinary Center of Excellence, University of Szeged, Dugonics tér 13, Szeged, 6720 Hungary
| | - Miklós Sántha
- grid.481814.00000 0004 0479 9817Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network, Temesvári krt. 62, Szeged, 6726 Hungary
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Varga-Medveczky Z, Kovács N, Tóth ME, Sántha M, Horváth I, Bors LA, Fónagy K, Imre T, Szabó P, Máthé D, Erdő F. Age-Related Inflammatory Balance Shift, Nasal Barrier Function, and Cerebro-Morphological Status in Healthy and Diseased Rodents. Front Neurosci 2021; 15:700729. [PMID: 34366780 PMCID: PMC8343234 DOI: 10.3389/fnins.2021.700729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/14/2021] [Indexed: 01/20/2023] Open
Abstract
Increased blood–brain barrier (BBB) permeability and extensive neuronal changes have been described earlier in both healthy and pathological aging like apolipoprotein B-100 (APOB-100) and amyloid precursor protein (APP)–presenilin-1 (PSEN1) transgenic mouse models. APOB-100 hypertriglyceridemic model is a useful tool to study the link between cerebrovascular pathology and neurodegeneration, while APP–PSEN1 humanized mouse is a model of Alzheimer’s disease. The aim of the current study was to characterize the inflammatory changes in the brain with healthy aging and in neurodegeneration. Also, the cerebro-morphological and cognitive alterations have been investigated. The nose-to-brain delivery of a P-glycoprotein substrate model drug (quinidine) was monitored in the disease models and compared with the age-matched controls. Our results revealed an inflammatory balance shift in both the healthy aged and neurodegenerative models. In normal aging monocyte chemoattractant protein-1, stem cell factor and Rantes were highly upregulated indicating a stimulated leukocyte status. In APOB-100 mice, vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF-BB), and interleukin-17A (IL-17A) were induced (vascular reaction), while in APP–PSEN1 mice resistin, IL-17A and GM-CSF were mostly upregulated. The nasal drug absorption was similar in the brain and blood indicating the molecular bypass of the BBB. The learning and memory tests showed no difference in the cognitive performance of healthy aged and young animals. Based on these results, it can be concluded that various markers of chronic inflammation are present in healthy aged and diseased animals. In APOB-100 mice, a cerebro-ventricular dilation can also be observed. For development of proper anti-aging and neuroprotective compounds, further studies focusing on the above inflammatory targets are suggested.
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Affiliation(s)
- Zsófia Varga-Medveczky
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Noémi Kovács
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Melinda E Tóth
- Institute of Biochemistry, ELKH Biological Research Centre, Szeged, Hungary
| | - Miklós Sántha
- Institute of Biochemistry, ELKH Biological Research Centre, Szeged, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Luca Anna Bors
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary.,Heart and Vascular Centre, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Katalin Fónagy
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Timea Imre
- Research Centre for Natural Sciences, Centre for Structural Study, Budapest, Hungary
| | - Pál Szabó
- Research Centre for Natural Sciences, Centre for Structural Study, Budapest, Hungary
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary.,Hungarian Center of Excellence for Molecular Medicine (HCEMM), Advanced In Vivo Imaging Core Faciltiy, Budapest, Hungary
| | - Franciska Erdő
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
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4
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Tóth ME, Dukay B, Péter M, Balogh G, Szűcs G, Zvara Á, Szebeni GJ, Hajdu P, Sárközy M, Puskás LG, Török Z, Csont T, Vígh L, Sántha M. Male and Female Animals Respond Differently to High-Fat Diet and Regular Exercise Training in a Mouse Model of Hyperlipidemia. Int J Mol Sci 2021; 22:ijms22084198. [PMID: 33919597 PMCID: PMC8073713 DOI: 10.3390/ijms22084198] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/13/2021] [Accepted: 04/15/2021] [Indexed: 01/18/2023] Open
Abstract
Inappropriate nutrition and a sedentary lifestyle can lead to obesity, one of the most common risk factors for several chronic diseases. Although regular physical exercise is an efficient approach to improve cardiometabolic health, the exact cellular processes are still not fully understood. We aimed to analyze the morphological, gene expression, and lipidomic patterns in the liver and adipose tissues in response to regular exercise. Healthy (wild type on a normal diet) and hyperlipidemic, high-fat diet-fed (HFD-fed) apolipoprotein B-100 (APOB-100)-overexpressing mice were trained by treadmill running for 7 months. The serum concentrations of triglyceride and tumor necrosis factor α (TNFα), as well as the level of lipid accumulation in the liver, were significantly higher in HFD-fed APOB-100 males compared to females. However, regular exercise almost completely abolished lipid accumulation in the liver of hyperlipidemic animals. The expression level of the thermogenesis marker, uncoupling protein-1 (Ucp1), was significantly higher in the subcutaneous white adipose tissue of healthy females, as well as in the brown adipose tissue of HFD-fed APOB-100 females, compared to males. Lipidomic analyses revealed that hyperlipidemia essentially remodeled the lipidome of brown adipose tissue, affecting both the membrane and storage lipid fractions, which was partially restored by exercise in both sexes. Our results revealed more severe metabolic disturbances in HFD-fed APOB-100 males compared to females. However, exercise efficiently reduced the body weight, serum triglyceride levels, expression of pro-inflammatory factors, and hepatic lipid accumulation in our model.
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Affiliation(s)
- Melinda E. Tóth
- Institute of Biochemistry, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (B.D.); (M.P.); (G.B.); (P.H.); (Z.T.); (L.V.); (M.S.)
- Correspondence: ; Tel.: +36-62-599-635
| | - Brigitta Dukay
- Institute of Biochemistry, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (B.D.); (M.P.); (G.B.); (P.H.); (Z.T.); (L.V.); (M.S.)
- Doctoral School in Biology, University of Szeged, H-6726 Szeged, Hungary
| | - Mária Péter
- Institute of Biochemistry, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (B.D.); (M.P.); (G.B.); (P.H.); (Z.T.); (L.V.); (M.S.)
| | - Gábor Balogh
- Institute of Biochemistry, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (B.D.); (M.P.); (G.B.); (P.H.); (Z.T.); (L.V.); (M.S.)
| | - Gergő Szűcs
- MEDICS Research Group, Department of Biochemistry, Interdisciplinary Center of Excellence, University of Szeged, H-6720 Szeged, Hungary; (G.S.); (M.S.); (T.C.)
| | - Ágnes Zvara
- Laboratory of Functional Genomics, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (Á.Z.); (G.J.S.); (L.G.P.)
| | - Gábor J. Szebeni
- Laboratory of Functional Genomics, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (Á.Z.); (G.J.S.); (L.G.P.)
| | - Petra Hajdu
- Institute of Biochemistry, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (B.D.); (M.P.); (G.B.); (P.H.); (Z.T.); (L.V.); (M.S.)
| | - Márta Sárközy
- MEDICS Research Group, Department of Biochemistry, Interdisciplinary Center of Excellence, University of Szeged, H-6720 Szeged, Hungary; (G.S.); (M.S.); (T.C.)
| | - László G. Puskás
- Laboratory of Functional Genomics, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (Á.Z.); (G.J.S.); (L.G.P.)
| | - Zsolt Török
- Institute of Biochemistry, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (B.D.); (M.P.); (G.B.); (P.H.); (Z.T.); (L.V.); (M.S.)
| | - Tamás Csont
- MEDICS Research Group, Department of Biochemistry, Interdisciplinary Center of Excellence, University of Szeged, H-6720 Szeged, Hungary; (G.S.); (M.S.); (T.C.)
| | - László Vígh
- Institute of Biochemistry, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (B.D.); (M.P.); (G.B.); (P.H.); (Z.T.); (L.V.); (M.S.)
| | - Miklós Sántha
- Institute of Biochemistry, ELKH Biological Research Centre, H-6726 Szeged, Hungary; (B.D.); (M.P.); (G.B.); (P.H.); (Z.T.); (L.V.); (M.S.)
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5
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Dukay B, Walter FR, Vigh JP, Barabási B, Hajdu P, Balassa T, Migh E, Kincses A, Hoyk Z, Szögi T, Borbély E, Csoboz B, Horváth P, Fülöp L, Penke B, Vígh L, Deli MA, Sántha M, Tóth ME. Neuroinflammatory processes are augmented in mice overexpressing human heat-shock protein B1 following ethanol-induced brain injury. J Neuroinflammation 2021; 18:22. [PMID: 33423680 PMCID: PMC7798334 DOI: 10.1186/s12974-020-02070-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 12/30/2020] [Indexed: 12/27/2022] Open
Abstract
Background Heat-shock protein B1 (HSPB1) is among the most well-known and versatile member of the evolutionarily conserved family of small heat-shock proteins. It has been implicated to serve a neuroprotective role against various neurological disorders via its modulatory activity on inflammation, yet its exact role in neuroinflammation is poorly understood. In order to shed light on the exact mechanism of inflammation modulation by HSPB1, we investigated the effect of HSPB1 on neuroinflammatory processes in an in vivo and in vitro model of acute brain injury. Methods In this study, we used a transgenic mouse strain overexpressing the human HSPB1 protein. In the in vivo experiments, 7-day-old transgenic and wild-type mice were treated with ethanol. Apoptotic cells were detected using TUNEL assay. The mRNA and protein levels of cytokines and glial cell markers were examined using RT-PCR and immunohistochemistry in the brain. We also established primary neuronal, astrocyte, and microglial cultures which were subjected to cytokine and ethanol treatments. TNFα and hHSPB1 levels were measured from the supernates by ELISA, and intracellular hHSPB1 expression was analyzed using fluorescent immunohistochemistry. Results Following ethanol treatment, the brains of hHSPB1-overexpressing mice showed a significantly higher mRNA level of pro-inflammatory cytokines (Tnf, Il1b), microglia (Cd68, Arg1), and astrocyte (Gfap) markers compared to wild-type brains. Microglial activation, and 1 week later, reactive astrogliosis was higher in certain brain areas of ethanol-treated transgenic mice compared to those of wild-types. Despite the remarkably high expression of pro-apoptotic Tnf, hHSPB1-overexpressing mice did not exhibit higher level of apoptosis. Our data suggest that intracellular hHSPB1, showing the highest level in primary astrocytes, was responsible for the inflammation-regulating effects. Microglia cells were the main source of TNFα in our model. Microglia isolated from hHSPB1-overexpressing mice showed a significantly higher release of TNFα compared to wild-type cells under inflammatory conditions. Conclusions Our work provides novel in vivo evidence that hHSPB1 overexpression has a regulating effect on acute neuroinflammation by intensifying the expression of pro-inflammatory cytokines and enhancing glial cell activation, but not increasing neuronal apoptosis. These results suggest that hHSPB1 may play a complex role in the modulation of the ethanol-induced neuroinflammatory response. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-020-02070-2.
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Affiliation(s)
- Brigitta Dukay
- Institute of Biochemistry, Biological Research Centre, Temesvári krt. 62, Szeged, H-6726, Hungary. .,Doctoral School in Biology, University of Szeged, Szeged, Hungary.
| | - Fruzsina R Walter
- Institute of Biophysics, Biological Research Centre, Szeged, Hungary
| | - Judit P Vigh
- Institute of Biophysics, Biological Research Centre, Szeged, Hungary
| | - Beáta Barabási
- Institute of Biophysics, Biological Research Centre, Szeged, Hungary.,Doctoral School in Theoretical Medicine, University of Szeged, Szeged, Hungary
| | - Petra Hajdu
- Institute of Biochemistry, Biological Research Centre, Temesvári krt. 62, Szeged, H-6726, Hungary
| | - Tamás Balassa
- Institute of Biochemistry, Biological Research Centre, Temesvári krt. 62, Szeged, H-6726, Hungary.,Doctoral School of Informatics, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Ede Migh
- Institute of Biochemistry, Biological Research Centre, Temesvári krt. 62, Szeged, H-6726, Hungary
| | - András Kincses
- Institute of Biophysics, Biological Research Centre, Szeged, Hungary
| | - Zsófia Hoyk
- Institute of Biophysics, Biological Research Centre, Szeged, Hungary
| | - Titanilla Szögi
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Emőke Borbély
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Bálint Csoboz
- Institute of Biochemistry, Biological Research Centre, Temesvári krt. 62, Szeged, H-6726, Hungary.,Institute of Medical Biology, University of Tromsø, Tromsø, Norway
| | - Péter Horváth
- Institute of Biochemistry, Biological Research Centre, Temesvári krt. 62, Szeged, H-6726, Hungary.,Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - Lívia Fülöp
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Botond Penke
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - László Vígh
- Institute of Biochemistry, Biological Research Centre, Temesvári krt. 62, Szeged, H-6726, Hungary
| | - Mária A Deli
- Institute of Biophysics, Biological Research Centre, Szeged, Hungary
| | - Miklós Sántha
- Institute of Biochemistry, Biological Research Centre, Temesvári krt. 62, Szeged, H-6726, Hungary
| | - Melinda E Tóth
- Institute of Biochemistry, Biological Research Centre, Temesvári krt. 62, Szeged, H-6726, Hungary.
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Györffy BA, Tóth V, Török G, Gulyássy P, Kovács RÁ, Vadászi H, Micsonai A, Tóth ME, Sántha M, Homolya L, Drahos L, Juhász G, Kékesi KA, Kardos J. Synaptic mitochondrial dysfunction and septin accumulation are linked to complement-mediated synapse loss in an Alzheimer's disease animal model. Cell Mol Life Sci 2020; 77:5243-5258. [PMID: 32034429 PMCID: PMC7671981 DOI: 10.1007/s00018-020-03468-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/25/2019] [Accepted: 01/21/2020] [Indexed: 12/21/2022]
Abstract
Synaptic functional disturbances with concomitant synapse loss represent central pathological hallmarks of Alzheimer's disease. Excessive accumulation of cytotoxic amyloid oligomers is widely recognized as a key event that underlies neurodegeneration. Certain complement components are crucial instruments of widespread synapse loss because they can tag synapses with functional impairments leading to their engulfment by microglia. However, an exact understanding of the affected synaptic functions that predispose to complement-mediated synapse elimination is lacking. Therefore, we conducted systematic proteomic examinations on synaptosomes prepared from an amyloidogenic mouse model of Alzheimer's disease (APP/PS1). Synaptic fractions were separated according to the presence of the C1q-tag using fluorescence-activated synaptosome sorting and subjected to proteomic comparisons. The results raised the decline of mitochondrial functions in the C1q-tagged synapses of APP/PS1 mice based on enrichment analyses, which was verified using flow cytometry. Additionally, proteomics results revealed extensive alterations in the level of septin protein family members, which are known to dynamically form highly organized pre- and postsynaptic supramolecular structures, thereby affecting synaptic transmission. High-resolution microscopy investigations demonstrated that synapses with considerable amounts of septin-3 and septin-5 show increased accumulation of C1q in APP/PS1 mice compared to the wild-type ones. Moreover, a strong positive correlation was apparent between synaptic septin-3 levels and C1q deposition as revealed via flow cytometry and confocal microscopy examinations. In sum, our results imply that deterioration of synaptic mitochondrial functions and alterations in the organization of synaptic septins are associated with complement-dependent synapse loss in Alzheimer's disease.
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Affiliation(s)
- Balázs A Györffy
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
- Laboratory of Proteomics, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Vilmos Tóth
- Laboratory of Proteomics, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
- Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - György Török
- Molecular Cell Biology Research Group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences Centre of Excellence, Budapest, Hungary
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Péter Gulyássy
- MS Proteomics Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Budapest, Hungary
| | - Réka Á Kovács
- Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Henrietta Vadászi
- Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - András Micsonai
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
- Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Melinda E Tóth
- Institute of Biochemistry, Biological Research Centre, Szeged, Hungary
| | - Miklós Sántha
- Institute of Biochemistry, Biological Research Centre, Szeged, Hungary
| | - László Homolya
- Molecular Cell Biology Research Group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences Centre of Excellence, Budapest, Hungary
| | - László Drahos
- MS Proteomics Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Budapest, Hungary
| | - Gábor Juhász
- Laboratory of Proteomics, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
- CRU Hungary Ltd., Göd, Hungary
| | - Katalin A Kékesi
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
- Laboratory of Proteomics, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
- Department of Physiology and Neurobiology, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - József Kardos
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary.
- Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, Budapest, Hungary.
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7
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Tóth ME, Dukay B, Hoyk Z, Sántha M. Cerebrovascular Changes and Neurodegeneration Related to Hyperlipidemia: Characteristics of the Human ApoB-100 Transgenic Mice. Curr Pharm Des 2020; 26:1486-1494. [PMID: 32067608 PMCID: PMC7403644 DOI: 10.2174/1381612826666200218101818] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 11/27/2019] [Indexed: 01/07/2023]
Abstract
Serum lipid levels are closely related to the structure and function of blood vessels. Chronic hyperlipidemia may lead to damage in both the cardio- and the cerebrovascular systems. Vascular dysfunctions, including impairments of the blood-brain barrier, are known to be associated with neurodegenerative diseases. A growing number of evidence suggests that cardiovascular risk factors, such as hyperlipidemia, may increase the likelihood of developing dementia. Due to differences in lipoprotein metabolism, wild-type mice are protected against diet-induced hypercholesterolemia, and their serum lipid profile is different from that observed in humans. Therefore, several transgenic mouse models have been established to study the role of different apolipoproteins and their receptors in lipid metabolism, as well as the complications related to pathological lipoprotein levels. This mini-review focused on a transgenic mouse model overexpressing an apolipoprotein, the human ApoB-100. We discussed literature data and current advancements on the understanding of ApoB-100 induced cardio- and cerebrovascular lesions in order to demonstrate the involvement of this type of apolipoprotein in a wide range of pathologies, and a link between hyperlipidemia and neurodegeneration.
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Affiliation(s)
- Melinda E Tóth
- Institute of Biochemistry, Biological Research Centre, Sezeged, Hungary
| | - Brigitta Dukay
- Institute of Biochemistry, Biological Research Centre, Sezeged, Hungary.,Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Zsófia Hoyk
- Institute of Biophysics, Biological Research Centre, H-6726 Szeged, Temesvári krt. 62., Hungary
| | - Miklós Sántha
- Institute of Biochemistry, Biological Research Centre, Sezeged, Hungary
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8
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Abstract
The heat-shock response, one of the main pro-survival mechanisms of a living organism, has evolved as the biochemical response of cells to cope with heat stress. The most well-characterized aspect of the heat-shock response is the accumulation of a conserved set of proteins termed heat-shock proteins (HSPs). HSPs are key players in protein homeostasis acting as chaperones by aiding the folding and assembly of nascent proteins and protecting against protein aggregation. HSPs have been associated with neurological diseases in the context of their chaperone activity, as they were found to suppress the aggregation of misfolded toxic proteins. In recent times, HSPs have proven to have functions apart from the classical molecular chaperoning in that they play a role in a wider scale of neurological disorders by modulating neuronal survival, inflammation, and disease-specific signaling processes. HSPs are gaining importance based on their ability to fine-tune inflammation and act as immune modulators in various bodily fluids. However, their effect on neuroinflammation processes is not yet fully understood. In this review, we summarize the role of neuroinflammation in acute and chronic pathological conditions affecting the brain. Moreover, we seek to explore the existing literature on HSP-mediated inflammatory function within the central nervous system and compare the function of these proteins when they are localized intracellularly compared to being present in the extracellular milieu.
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Affiliation(s)
- Brigitta Dukay
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.,Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Bálint Csoboz
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Melinda E Tóth
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
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9
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Hoyk Z, Tóth ME, Lénárt N, Nagy D, Dukay B, Csefová A, Zvara Á, Seprényi G, Kincses A, Walter FR, Veszelka S, Vígh J, Barabási B, Harazin A, Kittel Á, Puskás LG, Penke B, Vígh L, Deli MA, Sántha M. Cerebrovascular Pathology in Hypertriglyceridemic APOB-100 Transgenic Mice. Front Cell Neurosci 2018; 12:380. [PMID: 30410436 PMCID: PMC6209654 DOI: 10.3389/fncel.2018.00380] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 10/04/2018] [Indexed: 01/08/2023] Open
Abstract
Hypertriglyceridemia is not only a serious risk factor in the development of cardiovascular diseases, but it is linked to neurodegeneration, too. Previously, we generated transgenic mice overexpressing the human APOB-100 protein, a mouse model of human atherosclerosis. In this model we observed high plasma levels of triglycerides, oxidative stress, tau hyperphosphorylation, synaptic dysfunction, cognitive impairment, increased neural apoptosis and neurodegeneration. Neurovascular dysfunction is recognized as a key factor in the development of neurodegenerative diseases, but the cellular and molecular events linking cerebrovascular pathology and neurodegeneration are not fully understood. Our aim was to study cerebrovascular changes in APOB-100 transgenic mice. We described the kinetics of the development of chronic hypertriglyceridemia in the transgenic animals. Increased blood-brain barrier permeability was found in the hippocampus of APOB-100 transgenic mice which was accompanied by structural changes. Using transmission electron microscopy, we detected changes in the brain capillary endothelial tight junction structure and edematous swelling of astrocyte endfeet. In brain microvessels isolated from APOB-100 transgenic animals increased Lox-1, Aqp4, and decreased Meox-2, Mfsd2a, Abcb1a, Lrp2, Glut-1, Nos2, Nos3, Vim, and in transgenic brains reduced Cdh2 and Gfap-σ gene expressions were measured using quantitative real-time PCR. We confirmed the decreased P-glycoprotein (ABCB1) and vimentin expression related to the neurovascular unit by immunostaining in transgenic brain sections using confocal microscopy. We conclude that in chronic hypertriglyceridemic APOB-100 transgenic mice both functional and morphological cerebrovascular pathology can be observed, and this animal model could be a useful tool to study the link between cerebrovascular pathology and neurodegeneration.
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Affiliation(s)
- Zsófia Hoyk
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Melinda E Tóth
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Nikolett Lénárt
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Dóra Nagy
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Brigitta Dukay
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Alexandra Csefová
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Ágnes Zvara
- Laboratory of Functional Genomics, Core Facilities, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - György Seprényi
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - András Kincses
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Fruzsina R Walter
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Szilvia Veszelka
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Judit Vígh
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Beáta Barabási
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - András Harazin
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Ágnes Kittel
- Laboratory of Molecular Pharmacology, Department of Pharmacology, Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary
| | - László G Puskás
- Laboratory of Functional Genomics, Core Facilities, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Botond Penke
- Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - László Vígh
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Mária A Deli
- Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Miklós Sántha
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
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10
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Penke B, Bogár F, Crul T, Sántha M, Tóth ME, Vígh L. Heat Shock Proteins and Autophagy Pathways in Neuroprotection: from Molecular Bases to Pharmacological Interventions. Int J Mol Sci 2018; 19:E325. [PMID: 29361800 PMCID: PMC5796267 DOI: 10.3390/ijms19010325] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [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: 12/22/2017] [Revised: 01/15/2018] [Accepted: 01/18/2018] [Indexed: 02/07/2023] Open
Abstract
Neurodegenerative diseases (NDDs) such as Alzheimer's disease, Parkinson's disease and Huntington's disease (HD), amyotrophic lateral sclerosis, and prion diseases are all characterized by the accumulation of protein aggregates (amyloids) into inclusions and/or plaques. The ubiquitous presence of amyloids in NDDs suggests the involvement of disturbed protein homeostasis (proteostasis) in the underlying pathomechanisms. This review summarizes specific mechanisms that maintain proteostasis, including molecular chaperons, the ubiquitin-proteasome system (UPS), endoplasmic reticulum associated degradation (ERAD), and different autophagic pathways (chaperon mediated-, micro-, and macro-autophagy). The role of heat shock proteins (Hsps) in cellular quality control and degradation of pathogenic proteins is reviewed. Finally, putative therapeutic strategies for efficient removal of cytotoxic proteins from neurons and design of new therapeutic targets against the progression of NDDs are discussed.
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Affiliation(s)
- Botond Penke
- Department of Medical Chemistry, University of Szeged, H-6720 Szeged, Dóm Square 8, Hungary.
| | - Ferenc Bogár
- Department of Medical Chemistry, University of Szeged, H-6720 Szeged, Dóm Square 8, Hungary.
- MTA-SZTE Biomimetic Systems Research Group, University of Szeged, H-6720 Szeged, Dóm Square 8, Hungary.
| | - Tim Crul
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, H-6726 Szeged, Temesvári krt. 62, Hungary.
| | - Miklós Sántha
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, H-6726 Szeged, Temesvári krt. 62, Hungary.
| | - Melinda E Tóth
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, H-6726 Szeged, Temesvári krt. 62, Hungary.
| | - László Vígh
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, H-6726 Szeged, Temesvári krt. 62, Hungary.
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11
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Małecki A, Skipor-Lahuta J, Toborek M, Abbott NJ, Antonetti DA, Su EJ, Lawrence DA, Atış M, Akcan U, Yılmaz CU, Orhan N, Düzgün P, Ceylan UD, Arıcan N, Karahüseyinoğlu S, Şahin GN, Ahıshalı B, Kaya M, Aydin S, Klopstein A, Engelhardt B, Baumann J, Tsao CC, Huang SF, Ogunshola O, Boytsova EB, Morgun AV, Khilazheva ED, Pozhilenkova EA, Gorina YV, Martynova GP, Salmina AB, Bueno D, Garcia-Fernàndez J, Castro V, Skowronska M, Toborek M, Chupel MU, Minuzzi LG, Filaire E, Teixeira AM, Corsi M, Versele R, Fuso A, Sevin E, Di Lorenzo C, Businaro R, Fenart L, Gosselet F, Candela P, Deli MA, Delaney C, O’Keefe E, Farrell M, Doyle S, Campbell M, Drewes LR, Appelt-Menzel A, Cubukova A, Metzger M, Fischer R, Francisco DMF, Bruggmann R, Fries A, Blecharz KG, Wagner J, Winkler L, Schneider U, Vajkoczy P, Furuse M, Gabbert L, Dilling C, Sisario D, Soukhoroukov V, Burek M, Guérit S, Fidan E, Devraj K, Czupalla CJ, Macas J, Thom S, Plate KH, Gerhardt H, Liebner S, Harazin A, Bocsik A, Váradi J, Fenyvesi F, Tubak V, Vecsernyés M, Helms HC, Waagepetersen HS, Nielsen CU, Brodin B, Hoyk Z, Tóth ME, Lénárt N, Dukay B, Kittel Á, Vígh J, Veszelka S, Walter F, Zvara Á, Puskás L, Sántha M, Engelhardt S, Ogunshola OO, Huber A, Reitner A, Osmen S, Hahn K, Bounzina N, Gerhartl A, Schönegger A, Steinkellner H, Laccone F, Neuhaus W, Hudson N, Celkova L, Iltzsche A, Drndarski S, Begley DJ, Janiurek MM, Kucharz K, Christoffersen C, Nielsen LB, Lauritzen M, Johnson RH, Kho DT, O’Carroll SJ, Angel CE, Graham ES, Pereira J, Karali CS, Cheng V, Zarghami N, Soto MS, Couch Y, Anthony DC, Sibson NR, Kealy J, Keep RF, Routhe LJ, Xiang J, Ye H, Hua Y, Moos T, Xi G, Kristensen M, Bach A, Strømgaard K, Kutuzov N, Lopes-Pinheiro MA, Lim J, Kamermans A, van Horssen J, Unger WW, Fontijn R, de Vries HE, Majerova P, Garruto RM, Marchetti L, Francisco D, Gruber I, Lyck R, Mészáros M, Porkoláb G, Kiss L, Pilbat AM, Török Z, Bozsó Z, Fülöp L, Michalicova A, Galba J, Mihaljevic S, Novak M, Kovac A, Morofuji Y, Fujimoto T, Watanabe D, Nakagawa S, Ujifuku K, Horie N, Izumo T, Anda T, Matsuo T, Niu F, Buch S, Nyúl-Tóth Á, Kozma M, Nagyőszi P, Nagy K, Fazakas C, Haskó J, Molnár K, Farkas AE, Galajda P, Wilhelm I, Krizbai IA, Kelly E, Wallace E, Greene C, Hughes S, Kealy J, Doyle N, Humphries MM, Grant GA, Friedman A, Veksler R, Molloy MG, Meaney JF, Pender N, Doherty CP, Park M, Liskiewicz A, Przybyla M, Kasprowska-Liśkiewicz D, Nowacka-Chmielewska M, Malecki A, Pombero A, Garcia-Lopez R, Martinez-Morga M, Martinez S, Prager O, Solomon-Kamintsky L, Schoknecht K, Bar-Klein G, Milikovsky D, Vazana U, Rosenbach D, Kovács R, Friedman A, Radak Z, Rodríguez-Lorenzo S, Bruggmann R, Kooij G, de Vries HE, Oxana SG, Denis B, Elena V, Anna A, Alla S, Vladimir S, Andrey M, Nataliya M, Elena K, Elizaveta B, Alexander S, Nikita N, Alla B, Yirong Y, Arkady A, Artem G, Mariya U, Anastasia S, Madina B, Artem S, Alexander K, Esmat SA, Valery P, Artem T, Jürgen K, de Abreu MS, Calpena AC, Espina M, García ML, Romero IA, Male D, Storck S, Hartz A, Pahnke J, Surma CU, Surma M, Giżejewski Z, Zieliński H, Szczepkowska A, Kowalewska M, Krawczynska A, Herman AP, Skipor J, Kachappilly N, Veenstra M, Rivera RL, Williams DW, Morgello S, Berman JW, Wyneken U, Batiz LF, Temizyürek A, Khodadust R, Küçük M, Gürses C, Emik S, Zielińska M, Obara-Michlewska M, Milewski K, Skonieczna E, Fręśko I, Neuwelt EA, Maria ARS, Bras AR, Lipka D, Valkai S, Kincses A, Dér A, Deli MA. Abstracts from the 20th International Symposium on Signal Transduction at the Blood-Brain Barriers. Fluids Barriers CNS 2017. [PMCID: PMC5667590 DOI: 10.1186/s12987-017-0071-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Oláh Z, Kálmán J, Tóth ME, Zvara Á, Sántha M, Ivitz E, Janka Z, Pákáski M. Proteomic analysis of cerebrospinal fluid in Alzheimer's disease: wanted dead or alive. J Alzheimers Dis 2015; 44:1303-12. [PMID: 25428253 DOI: 10.3233/jad-140141] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Clinical diagnosis of Alzheimer's disease (AD) relying on symptomatic features has a low specificity, emphasizing the importance of the pragmatic use of neurochemical biomarkers. The most advanced and reliable markers are amyloid-β (Aβ42), total tau (t-tau), and phosphorylated tau (p-tau) in cerebrospinal fluid (CSF) with relatively high levels of sensitivity, specificity, and diagnostic accuracy. Recent advances within the field of proteomics offer the potential to search for novel biomarkers in CSF by using modern methods, such as microarrays. The purpose of this study was to identify pathognostic proteins in CSF obtained from patients whose clinical AD diagnosis was confirmed by the "core" biomarkers. CSF samples were obtained from 25 AD patients and 25 control individuals. The levels of Aβ42, t-tau, and p-tau were measured by ELISA. In the microarray experiments, ultrasensitive slides representing of 653 antigens were used. Apolipoprotein E genotyping was also determined. A decrease of seven CSF proteins in AD were found, four of them (POLG, MGMT, parkin, and ApoD) have a protective function against neuronal death, while the remaining three proteins (PAR-4, granzyme B, Cdk5) trigger multiple pathways facilitating neuronal cell death. Since these proteins from CSF samples could not be identified by western blot, their decreased levels in AD patients were not verified. Our results provide new information of pathognostic importance of POLG and granzyme B in AD. Although the function of MGMT, parkin, ApoD, PAR-4, and Cdk5 was previously known in AD, the findings presented here provide novel evidence of the significance of CSF analysis in the mapping of the AD pathomechanism.
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Affiliation(s)
- Zita Oláh
- Department of Psychiatry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - János Kálmán
- Department of Psychiatry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Melinda E Tóth
- Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Szeged, Hungary
| | - Ágnes Zvara
- Laboratory of Functional Genomics, Biological Research Centre, Szeged, Hungary
| | - Miklós Sántha
- Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Szeged, Hungary
| | - Eszter Ivitz
- Department of Psychiatry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Zoltán Janka
- Department of Psychiatry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Magdolna Pákáski
- Department of Psychiatry, Faculty of Medicine, University of Szeged, Szeged, Hungary
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13
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Lénárt N, Walter FR, Bocsik A, Sántha P, Tóth ME, Harazin A, Tóth AE, Vizler C, Török Z, Pilbat AM, Vígh L, Puskás LG, Sántha M, Deli MA. Cultured cells of the blood-brain barrier from apolipoprotein B-100 transgenic mice: effects of oxidized low-density lipoprotein treatment. Fluids Barriers CNS 2015; 12:17. [PMID: 26184769 PMCID: PMC4504453 DOI: 10.1186/s12987-015-0013-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 07/01/2015] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND The apolipoprotein B-100 (ApoB-100) transgenic mouse line is a model of human atherosclerosis. Latest findings suggest the importance of ApoB-100 in the development of neurodegenerative diseases and microvascular/perivascular localization of ApoB-100 protein was demonstrated in the cerebral cortex of ApoB-100 transgenic mice. The aim of the study was to characterize cultured brain endothelial cells, pericytes and glial cells from wild-type and ApoB-100 transgenic mice and to study the effect of oxidized low-density lipoprotein (oxLDL) on these cells. METHODS Morphology of cells isolated from brains of wild type and ApoB-100 transgenic mice was characterized by immunohistochemistry and the intensity of immunolabeling was quantified by image analysis. Toxicity of oxLDL treatment was monitored by real-time impedance measurement and lactate dehydrogenase release. Reactive oxygen species and nitric oxide production, barrier permeability in triple co-culture blood-brain barrier model and membrane fluidity were also determined after low-density lipoprotein (LDL) or oxLDL treatment. RESULTS The presence of ApoB-100 was confirmed in brain endothelial cells, while no morphological change was observed between wild type and transgenic cells. Oxidized but not native LDL exerted dose-dependent toxicity in all three cell types, induced barrier dysfunction and increased reactive oxygen species (ROS) production in both genotypes. A partial protection from oxLDL toxicity was seen in brain endothelial and glial cells from ApoB-100 transgenic mice. Increased membrane rigidity was measured in brain endothelial cells from ApoB-100 transgenic mice and in LDL or oxLDL treated wild type cells. CONCLUSION The morphological and functional properties of cultured brain endothelial cells, pericytes and glial cells from ApoB-100 transgenic mice were characterized and compared to wild type cells for the first time. The membrane fluidity changes in ApoB-100 transgenic cells related to brain microvasculature indicate alterations in lipid composition which may be linked to the partial protection against oxLDL toxicity.
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Affiliation(s)
- Nikolett Lénárt
- Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Temesvári krt. 62, 6720, Szeged, Hungary. .,Laboratory of Neuroimmunology, Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary.
| | - Fruzsina R Walter
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - Alexandra Bocsik
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - Petra Sántha
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - Melinda E Tóth
- Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Temesvári krt. 62, 6720, Szeged, Hungary.
| | - András Harazin
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - Andrea E Tóth
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - Csaba Vizler
- Laboratory of Molecular Stress Biology, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - Zsolt Török
- Laboratory of Molecular Stress Biology, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - Ana-Maria Pilbat
- Laboratory of Molecular Stress Biology, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - László Vígh
- Laboratory of Molecular Stress Biology, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - László G Puskás
- Laboratory of Functional Genomics, Laboratories of Core Facilities, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
| | - Miklós Sántha
- Laboratory of Animal Genetics and Molecular Neurobiology, Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Temesvári krt. 62, 6720, Szeged, Hungary.
| | - Mária A Deli
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.
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14
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Abstract
Ethanol, which affects all body organs, exerts a number of cytotoxic effects, most of them independent of cell type. Ethanol treatment leads to increased membrane fluidity and to changes in membrane protein composition. It can also interact directly with membrane proteins, causing conformational changes and thereby influencing their function. The cytotoxic action may include an increased level of oxidative stress. Heat shock protein molecular chaperones are ubiquitously expressed evolutionarily conserved proteins which serve as critical regulators of cellular homeostasis. Heat shock proteins can be induced by various forms of stresses such as elevated temperature, alcohol treatment, or ischemia, and they are also upregulated in certain pathological conditions. As heat shock and ethanol stress provoke similar responses, it is likely that heat shock protein activation also has a role in the protection of membranes and other cellular components during alcohol stress.
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Affiliation(s)
- Melinda E. Tóth
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, P.O. Box 521, 6701 Szeged, Hungary
| | - László Vígh
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, P.O. Box 521, 6701 Szeged, Hungary
| | - Miklós Sántha
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, P.O. Box 521, 6701 Szeged, Hungary
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15
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Lénárt N, Szegedi V, Juhász G, Kasztner A, Horváth J, Bereczki E, Tóth ME, Penke B, Sántha M. Increased tau phosphorylation and impaired presynaptic function in hypertriglyceridemic ApoB-100 transgenic mice. PLoS One 2012; 7:e46007. [PMID: 23029362 PMCID: PMC3454377 DOI: 10.1371/journal.pone.0046007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 08/23/2012] [Indexed: 11/18/2022] Open
Abstract
AIMS ApoB-100 is the major protein component of cholesterol- and triglyceride-rich LDL and VLDL lipoproteins in the serum. Previously, we generated and partially described transgenic mice overexpressing the human ApoB-100 protein. Here, we further characterize this transgenic strain in order to reveal a possible link between hypeprlipidemia and neurodegeneration. METHODS AND RESULTS We analyzed the serum and cerebral lipid profiles, tau phosphorylation patterns, amyloid plaque-formation, neuronal apoptosis and synaptic plasticity of young (3 month old), adult (6 month old) and aging (10-11 month old) transgenic mice. We show that ApoB-100 transgenic animals present i) elevated serum and cerebral levels of triglycerides and ApoB-100, ii) increased cerebral tau phosphorylation at phosphosites Ser(199), Ser(199/202), Ser(396) and Ser(404). Furthermore, we demonstrate, that tau hyperphosphorylation is accompanied by impaired presynaptic function, long-term potentiation and widespread hippocampal neuronal apoptosis. CONCLUSIONS The results presented here indicate that elevated ApoB-100 level and the consequent chronic hypertriglyceridemia may lead to impaired neuronal function and neurodegeneration, possibly via hyperphosphorylation of tau protein. On account of their specific phenotype, ApoB-100 transgenic mice may be considered a versatile model of hyperlipidemia-induced age-related neurodegeneration.
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Affiliation(s)
- Nikolett Lénárt
- Institute of Biochemistry, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Viktor Szegedi
- Bay Zoltan Foundation for Applied Research, Institute for Plant Genomics, Human Biotechnology and Bioenergy, Szeged, Hungary
| | - Gábor Juhász
- Bay Zoltan Foundation for Applied Research, Institute for Plant Genomics, Human Biotechnology and Bioenergy, Szeged, Hungary
| | - Aniko Kasztner
- Institute of Biochemistry, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - János Horváth
- Institute of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Erika Bereczki
- Institute of Biochemistry, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Melinda E. Tóth
- Institute of Biochemistry, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Botond Penke
- Bay Zoltan Foundation for Applied Research, Institute for Plant Genomics, Human Biotechnology and Bioenergy, Szeged, Hungary
- Institute of Medical Chemistry, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Miklós Sántha
- Institute of Biochemistry, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
- * E-mail:
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16
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Csont T, Görbe A, Bereczki E, Szunyog A, Aypar E, Tóth ME, Varga ZV, Csonka C, Fülöp F, Sántha M, Ferdinandy P. Biglycan protects cardiomyocytes against hypoxia/reoxygenation injury: role of nitric oxide. J Mol Cell Cardiol 2010; 48:649-52. [PMID: 20096286 DOI: 10.1016/j.yjmcc.2010.01.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2010] [Accepted: 01/12/2010] [Indexed: 11/19/2022]
Abstract
Biglycan, a proteoglycan component of extracellular matrix, has been suspected to contribute to the development of atherosclerosis, but overexpression of biglycan in transgenic mice has been shown to induce cardioprotective genes including nitric oxide (NO) synthases in the heart. Therefore, here we hypothesized if exogenous administration of biglycan exerts cytoprotection. Primary cardiomyocytes from neonatal rats were subjected to 150 min hypoxia and 2 h reoxygenation. Mortality of cardiomyocytes was dose-dependently attenuated by pretreatment with 1-100 nM biglycan. Biglycan enhanced eNOS mRNA and protein, and significantly increased NO content of cardiomyocytes. The NO synthase inhibitor l-nitro-arginine-methyl-ester significantly attenuated the cytoprotective effect of biglycan. This is the first demonstration that biglycan leads to cytoprotection against hypoxia/reoxygenation injury, and that this phenomenon is partially mediated by an NO-dependent mechanism.
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Affiliation(s)
- Tamás Csont
- Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Szeged, Hungary.
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