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Tayyeb A, Dihazi GH, Tampe B, Zeisberg M, Tampe D, Hakroush S, Bührig C, Frese J, Serin N, Eltoweissy M, Müller GA, Dihazi H. Calreticulin Shortage Results in Disturbance of Calcium Storage, Mitochondrial Disease, and Kidney Injury. Cells 2022; 11:cells11081329. [PMID: 35456008 PMCID: PMC9025518 DOI: 10.3390/cells11081329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/04/2022] [Accepted: 04/08/2022] [Indexed: 12/10/2022] Open
Abstract
Renal Ca2+ reabsorption plays a central role in the fine-tuning of whole-body Ca2+ homeostasis. Here, we identified calreticulin (Calr) as a missing link in Ca2+ handling in the kidney and showed that a shortage of Calr results in mitochondrial disease and kidney pathogenesis. We demonstrated that Calr+/− mice displayed a chronic physiological low level of Calr and that this was associated with progressive renal injury manifested in glomerulosclerosis and tubulointerstitial damage. We found that Calr+/− kidney cells suffer from a disturbance in functionally active calcium stores and decrease in Ca2+ storage capacity. Consequently, the kidney cells displayed an abnormal activation of Ca2+ signaling and NF-κB pathways, resulting in inflammation and wide progressive kidney injury. Interestingly, the disturbance in the Ca2+ homeostasis and signaling in Calr+/− kidney mice cells triggered severe mitochondrial disease and aberrant mitophagy, resulting in a high level of oxidative stress and energy shortage. These findings provide novel mechanistic insight into the role of Calr in kidney calcium handling, function, and pathogenesis.
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Affiliation(s)
- Asima Tayyeb
- School of Biological Sciences, University of the Punjab, Lahore 53700, Pakistan;
| | - Gry H. Dihazi
- UMG-Laboratories, Institute for Clinical Chemistry, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany;
| | - Björn Tampe
- Clinic for Nephrology and Rheumatology, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (B.T.); (M.Z.); (D.T.); (C.B.); (N.S.); (G.A.M.)
| | - Michael Zeisberg
- Clinic for Nephrology and Rheumatology, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (B.T.); (M.Z.); (D.T.); (C.B.); (N.S.); (G.A.M.)
| | - Desiree Tampe
- Clinic for Nephrology and Rheumatology, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (B.T.); (M.Z.); (D.T.); (C.B.); (N.S.); (G.A.M.)
| | - Samy Hakroush
- Department of Pathology, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany;
| | - Charlotte Bührig
- Clinic for Nephrology and Rheumatology, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (B.T.); (M.Z.); (D.T.); (C.B.); (N.S.); (G.A.M.)
| | - Jenny Frese
- Department of Occupational Medicine and Health Safety, Deutsche Post AG, Kölnische Strasse 81, 34117 Kassel, Germany;
| | - Nazli Serin
- Clinic for Nephrology and Rheumatology, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (B.T.); (M.Z.); (D.T.); (C.B.); (N.S.); (G.A.M.)
- Department of Hematology and Oncology, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany
| | - Marwa Eltoweissy
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria 21568, Egypt;
| | - Gerhard A. Müller
- Clinic for Nephrology and Rheumatology, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (B.T.); (M.Z.); (D.T.); (C.B.); (N.S.); (G.A.M.)
| | - Hassan Dihazi
- Clinic for Nephrology and Rheumatology, University Medical Centre Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (B.T.); (M.Z.); (D.T.); (C.B.); (N.S.); (G.A.M.)
- Centre for Biostructural Imaging of Neurodegeneration (BIN), University Medical Center Göttingen, 37075 Göttingen, Germany
- Correspondence: ; Tel.: +49-551-3960350
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Serin N, Dihazi GH, Tayyeb A, Lenz C, Müller GA, Zeisberg M, Dihazi H. Calreticulin Deficiency Disturbs Ribosome Biogenesis and Results in Retardation in Embryonic Kidney Development. Int J Mol Sci 2021; 22:5858. [PMID: 34070742 PMCID: PMC8198291 DOI: 10.3390/ijms22115858] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/18/2021] [Accepted: 05/26/2021] [Indexed: 11/27/2022] Open
Abstract
Nephrogenesis is driven by complex signaling pathways that control cell growth and differentiation. The endoplasmic reticulum chaperone calreticulin (Calr) is well known for its function in calcium storage and in the folding of glycoproteins. Its role in kidney development is still not understood. We provide evidence for a pivotal role of Calr in nephrogenesis in this investigation. We show that Calr deficiency results in the disrupted formation of an intact nephrogenic zone and in retardation of nephrogenesis, as evidenced by the disturbance in the formation of comma-shaped and s-shaped bodies. Using proteomics and transcriptomics approaches, we demonstrated that in addition to an alteration in Wnt-signaling key proteins, embryonic kidneys from Calr-/- showed an overall impairment in expression of ribosomal proteins which reveals disturbances in protein synthesis and nephrogenesis. CRISPR/cas9 mediated knockout confirmed that Calr deficiency is associated with a deficiency of several ribosomal proteins and key proteins in ribosome biogenesis. Our data highlights a direct link between Calr expression and the ribosome biogenesis.
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Affiliation(s)
- Nazli Serin
- Clinic for Nephrology and Rheumatology, University Medical Center Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (N.S.); (G.A.M.); (M.Z.)
- Department of Hematology and Oncology, University of Medical Center Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany
| | - Gry H. Dihazi
- Institute of Clinical Chemistry/UMG-Laboratories, University Medical Center Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (G.H.D.); (C.L.)
| | - Asima Tayyeb
- School of Biological Sciences, University of the Punjab, Lahore 54590, Pakistan;
| | - Christof Lenz
- Institute of Clinical Chemistry/UMG-Laboratories, University Medical Center Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (G.H.D.); (C.L.)
- Bioanalytical Mass Spectrometry, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
| | - Gerhard A. Müller
- Clinic for Nephrology and Rheumatology, University Medical Center Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (N.S.); (G.A.M.); (M.Z.)
| | - Michael Zeisberg
- Clinic for Nephrology and Rheumatology, University Medical Center Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (N.S.); (G.A.M.); (M.Z.)
| | - Hassan Dihazi
- Clinic for Nephrology and Rheumatology, University Medical Center Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany; (N.S.); (G.A.M.); (M.Z.)
- Center for Biostructural Imaging of Neurodegeneration (BIN), University Medical Center Göttingen, 37075 Göttingen, Germany
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Reckoning the Dearth of Bioinformatics in the Arena of Diabetic Nephropathy (DN)—Need to Improvise. Processes (Basel) 2020. [DOI: 10.3390/pr8070808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Diabetic nephropathy (DN) is a recent rising concern amongst diabetics and diabetologist. Characterized by abnormal renal function and ending in total loss of kidney function, this is becoming a lurking danger for the ever increasing population of diabetics. This review touches upon the intensity of this complication and briefly reviews the role of bioinformatics in the area of diabetes. The advances made in the area of DN using proteomic approaches are presented. Compared to the enumerable inputs observed through the use of bioinformatics resources in the area of proteomics and even diabetes, the existing scenario of skeletal application of bioinformatics advances to DN is highlighted and the reasons behind this discussed. As this review highlights, almost none of the well-established tools that have brought breakthroughs in proteomic research have been applied into DN. Laborious, voluminous, cost expensive and time-consuming methodologies and advances in diagnostics and biomarker discovery promised through beckoning bioinformatics mechanistic approaches to improvise DN research and achieve breakthroughs. This review is expected to sensitize the researchers to fill in this gap, exploiting the available inputs from bioinformatics resources.
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Rinschen MM, Limbutara K, Knepper MA, Payne DM, Pisitkun T. From Molecules to Mechanisms: Functional Proteomics and Its Application to Renal Tubule Physiology. Physiol Rev 2019; 98:2571-2606. [PMID: 30182799 DOI: 10.1152/physrev.00057.2017] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Classical physiological studies using electrophysiological, biophysical, biochemical, and molecular techniques have created a detailed picture of molecular transport, bioenergetics, contractility and movement, and growth, as well as the regulation of these processes by external stimuli in cells and organisms. Newer systems biology approaches are beginning to provide deeper and broader understanding of these complex biological processes and their dynamic responses to a variety of environmental cues. In the past decade, advances in mass spectrometry-based proteomic technologies have provided invaluable tools to further elucidate these complex cellular processes, thereby confirming, complementing, and advancing common views of physiology. As one notable example, the application of proteomics to study the regulation of kidney function has yielded novel insights into the chemical and physical processes that tightly control body fluids, electrolytes, and metabolites to provide optimal microenvironments for various cellular and organ functions. Here, we systematically review, summarize, and discuss the most significant key findings from functional proteomic studies in renal epithelial physiology. We also identify further improvements in technological and bioinformatics methods that will be essential to advance precision medicine in nephrology.
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Affiliation(s)
- Markus M Rinschen
- Department II of Internal Medicine, University Hospital Cologne , Cologne , Germany ; Center for Molecular Medicine Cologne, University of Cologne , Cologne , Germany ; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne , Cologne , Germany ; Division of Nephrology, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand ; Epithelial Systems Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health , Bethesda, Maryland ; and Center of Excellence in Systems Biology, Research Affairs, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand
| | - Kavee Limbutara
- Department II of Internal Medicine, University Hospital Cologne , Cologne , Germany ; Center for Molecular Medicine Cologne, University of Cologne , Cologne , Germany ; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne , Cologne , Germany ; Division of Nephrology, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand ; Epithelial Systems Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health , Bethesda, Maryland ; and Center of Excellence in Systems Biology, Research Affairs, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand
| | - Mark A Knepper
- Department II of Internal Medicine, University Hospital Cologne , Cologne , Germany ; Center for Molecular Medicine Cologne, University of Cologne , Cologne , Germany ; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne , Cologne , Germany ; Division of Nephrology, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand ; Epithelial Systems Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health , Bethesda, Maryland ; and Center of Excellence in Systems Biology, Research Affairs, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand
| | - D Michael Payne
- Department II of Internal Medicine, University Hospital Cologne , Cologne , Germany ; Center for Molecular Medicine Cologne, University of Cologne , Cologne , Germany ; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne , Cologne , Germany ; Division of Nephrology, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand ; Epithelial Systems Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health , Bethesda, Maryland ; and Center of Excellence in Systems Biology, Research Affairs, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand
| | - Trairak Pisitkun
- Department II of Internal Medicine, University Hospital Cologne , Cologne , Germany ; Center for Molecular Medicine Cologne, University of Cologne , Cologne , Germany ; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne , Cologne , Germany ; Division of Nephrology, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand ; Epithelial Systems Biology Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health , Bethesda, Maryland ; and Center of Excellence in Systems Biology, Research Affairs, Faculty of Medicine, Chulalongkorn University , Bangkok , Thailand
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Agte S, Savvinov A, Karl A, Zayas-Santiago A, Ulbricht E, Makarov VI, Reichenbach A, Bringmann A, Skatchkov SN. Müller glial cells contribute to dim light vision in the spectacled caiman (Caiman crocodilus fuscus): Analysis of retinal light transmission. Exp Eye Res 2018; 173:91-108. [PMID: 29763583 PMCID: PMC9930533 DOI: 10.1016/j.exer.2018.05.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/23/2018] [Accepted: 05/11/2018] [Indexed: 10/16/2022]
Abstract
In this study, we show the capability of Müller glial cells to transport light through the inverted retina of reptiles, specifically the retina of the spectacled caimans. Thus, confirming that Müller cells of lower vertebrates also improve retinal light transmission. Confocal imaging of freshly isolated retinal wholemounts, that preserved the refractive index landscape of the tissue, indicated that the retina of the spectacled caiman is adapted for vision under dim light conditions. For light transmission experiments, we used a setup with two axially aligned objectives imaging the retina from both sides to project the light onto the inner (vitreal) surface and to detect the transmitted light behind the retina at the receptor layer. Simultaneously, a confocal microscope obtained images of the Müller cells embedded within the vital tissue. Projections of light onto several representative Müller cell trunks within the inner plexiform layer, i.e. (i) trunks with a straight orientation, (ii) trunks which are formed by the inner processes and (iii) trunks which get split into inner processes, were associated with increases in the intensity of the transmitted light. Projections of light onto the periphery of the Müller cell endfeet resulted in a lower intensity of transmitted light. In this way, retinal glial (Müller) cells support dim light vision by improving the signal-to-noise ratio which increases the sensitivity to light. The field of illuminated photoreceptors mainly include rods reflecting the rod dominance of the of tissue. A subpopulation of Müller cells with downstreaming cone cells led to a high-intensity illumination of the cones, while the surrounding rods were illuminated by light of lower intensity. Therefore, Müller cells that lie in front of cones may adapt the intensity of the transmitted light to the different sensitivities of cones and rods, presumably allowing a simultaneous vision with both receptor types under dim light conditions.
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Affiliation(s)
- Silke Agte
- Paul Flechsig Institute for Brain Research, Leipzig University, Leipzig, Germany.
| | - Alexey Savvinov
- Department of Physical Sciences, University of Puerto Rico, Rio Piedras Campus, San Juan, Puerto Rico
| | - Anett Karl
- Paul Flechsig Institute for Brain Research, Leipzig University, Leipzig, Germany,Carl Ludwig Institute for Physiology, Leipzig University, Leipzig, Germany
| | - Astrid Zayas-Santiago
- Department of Pathology and Laboratory Medicine, Universidad Central del Caribe, Bayamón, Puerto Rico
| | - Elke Ulbricht
- Biotechnology Center, Technical University of Dresden, Dresden, Germany
| | - Vladimir I. Makarov
- Department of Physics, University of Puerto Rico, Rio Piedras Campus, San Juan, Puerto Rico
| | - Andreas Reichenbach
- Paul Flechsig Institute for Brain Research, Leipzig University, Leipzig, Germany
| | - Andreas Bringmann
- Department of Ophthalmology and Eye Hospital, Medical Faculty, Leipzig University, Leipzig, Germany
| | - Serguei N. Skatchkov
- Department of Biochemistry and Physiology, Universidad Central del Caribe, Bayamón, Puerto Rico
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Functional Association between Regulatory RNAs and the Annexins. Int J Mol Sci 2018; 19:ijms19020591. [PMID: 29462943 PMCID: PMC5855813 DOI: 10.3390/ijms19020591] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/12/2018] [Accepted: 02/14/2018] [Indexed: 12/17/2022] Open
Abstract
Cells respond to pathophysiological states by activation of stress-induced signalling. Regulatory non-coding microRNAs (miRNAs) often form stable feed-forward loops which ensure prolongation of the signal, contributing to sustained activation. Members of the annexin protein family act as sensors for Ca2+, pH, and lipid second messengers, and regulate various signalling pathways. Recently, annexins were reported to participate in feedback loops, suppressing miRNA synthesis and attenuating stress-induced dysregulation of gene expression. They can directly or indirectly associate with RNAs, and are transferred between the cells in exosomes and shed microvesicles. The ability of annexins to recruit other proteins and miRNAs into exosomes implicates them in control of cell–cell interactions, affecting the adaptive responses and remodelling processes during disease. The studies summarized in this Review point to an emerging role of annexins in influencing the synthesis, localisation, and transfer of regulatory RNAs.
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Król A, Weidner S. Changes in the proteome of grapevine leaves (Vitis vinifera L.) during long-term drought stress. JOURNAL OF PLANT PHYSIOLOGY 2017; 211:114-126. [PMID: 28178572 DOI: 10.1016/j.jplph.2016.11.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/28/2016] [Accepted: 11/29/2016] [Indexed: 05/21/2023]
Abstract
The essence of exploring and understanding mechanisms of plant adaptation to environmental stresses lies in the determination of patterns of the expression of proteins, identification of stress proteins and their association with the specific functions in metabolic pathways. To date, little information has been provided about the proteomic response of grapevine to the persistent influence of adverse environmental conditions. This article describes changes in the profile of protein accumulation in leaves of common grapevine (Vitis vinifera L.) seedlings in response to prolonged drought. Isolated proteins were separated by two-dimensional electrophoresis (2 DE), and the proteins whose level of accumulation changed significantly due to the applied stress factors were identified with tandem mass spectrometry MALDI TOF/TOF type. Analysis of the proteome of grapevine leaves led to the detection of many proteins whose synthesis changed in response to the applied stressor. Drought caused the most numerous changes in the accumulation of proteins associated with carbohydrate and energy metabolism, mostly connected with the pathways of glycolysis and photosystem II protein components. The biological function of the identified proteins is discussed with reference to the stress of drought. Some of the identified proteins, especially the ones whose accumulation increased during drought stress, may be responsible for the adaptation of grapevine to drought.
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Affiliation(s)
- Angelika Król
- Department of Biology and Biotechnology, Chair of Biochemistry, University of Warmia and Mazury in Olsztyn, M. Oczapowskiego St. 1A, 10-957 Olsztyn, Kortowo, Poland.
| | - Stanisław Weidner
- Department of Biology and Biotechnology, Chair of Biochemistry, University of Warmia and Mazury in Olsztyn, M. Oczapowskiego St. 1A, 10-957 Olsztyn, Kortowo, Poland
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Markad VL, Adav SS, Ghole VS, Sze SK, Kodam KM. Proteomics study revealed altered proteome of Dichogaster curgensis upon exposure to fly ash. CHEMOSPHERE 2016; 160:104-113. [PMID: 27371791 DOI: 10.1016/j.chemosphere.2016.06.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 01/25/2016] [Accepted: 06/20/2016] [Indexed: 06/06/2023]
Abstract
Fly ash is toxic and its escalating use as a soil amendment and disposal by dumping into environment is receiving alarming attention due to its impact on environment. Proteomics technology is being used for environmental studies since proteins respond rapidly when an organism is exposed to a toxicant, and hence soil engineers such as earthworms are used as model organisms to assess the toxic effects of soil toxicants. This study adopted proteomics technology and profiled proteome of earthworm Dichogaster curgensis that was exposed to fly ash, with main aim to elucidate fly ash effects on cellular and metabolic pathways. The functional classification of identified proteins revealed carbohydrate metabolism (14.36%), genetic information processing (15.02%), folding, sorting and degradation (10.83%), replication and repair (3.95%); environmental information processing (2.19%), signal transduction (9.61%), transport and catabolism (17.27%), energy metabolism (6.69%), etc. in the proteome. Proteomics data and functional assays revealed that the exposure of earthworm to fly ash induced protein synthesis, up-regulation of gluconeogenesis, disturbed energy metabolism, oxidative and cellular stress, and mis-folding of proteins. The regulation of ubiquitination, proteasome and modified alkaline comet assay in earthworm coelomocytes suggested DNA-protein cross link affecting chromatin remodeling and protein folding.
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Affiliation(s)
- Vijaykumar L Markad
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune 411007, India
| | - Sunil S Adav
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore.
| | - Vikram S Ghole
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune 411007, India
| | - Siu Kwan Sze
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Kisan M Kodam
- Biochemistry Division, Department of Chemistry, Savitribai Phule Pune University, Pune 411007, India.
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The antioxidant protein PARK7 plays an important role in cell resistance to Cisplatin-induced apoptosis in case of clear cell renal cell carcinoma. Eur J Pharmacol 2016; 784:99-110. [DOI: 10.1016/j.ejphar.2016.04.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 04/06/2016] [Accepted: 04/08/2016] [Indexed: 11/22/2022]
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Active IKKβ promotes the stability of GLI1 oncogene in diffuse large B-cell lymphoma. Blood 2015; 127:605-15. [PMID: 26603838 DOI: 10.1182/blood-2015-07-658781] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 11/20/2015] [Indexed: 12/19/2022] Open
Abstract
GLI1 oncogene has been implicated in the pathobiology of several neoplasms including diffuse large B-cell lymphoma (DLBCL). However, mechanisms underlying GLI1-increased activity in DLBCL are poorly characterized. Herein, we demonstrate that IKKβ phosphorylates GLI1 in DLBCL. IKKβ activation increased GLI1 protein levels and transcriptional activity, whereas IKKβ silencing decreased GLI1 levels and transcriptional activity. Tumor necrosis factor-α (TNFα) mediated IKKβ activation-impaired GLI1 binding with the E3 ubiquitin ligase-ITCH, leading to decreased K48-linked ubiquitination/degradation of GLI1. We found 8 IKKβ-dependent phosphorylation sites that mediate GLI1 stability. Mutating or deleting these residues facilitated GLI1-ITCH interaction and decreased the protective effect of TNFα on GLI1 stability. IKKβ-GLI1 crosstalk is significant because combined inhibition of both molecules resulted in synergistic suppression of DLBCL viability in vivo and in vitro. By linking IKKβ-mediated nuclear factor-κB activity with GLI1, we identified a crosstalk between these 2 pathways that can inform the design of novel therapeutic strategies in DLBCL.
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Lamoke F, Mazzone V, Persichini T, Maraschi A, Harris MB, Venema RC, Colasanti M, Gliozzi M, Muscoli C, Bartoli M, Mollace V. Amyloid β peptide-induced inhibition of endothelial nitric oxide production involves oxidative stress-mediated constitutive eNOS/HSP90 interaction and disruption of agonist-mediated Akt activation. J Neuroinflammation 2015; 12:84. [PMID: 25935150 PMCID: PMC4438457 DOI: 10.1186/s12974-015-0304-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 04/21/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Amyloid β (Aβ)-induced vascular dysfunction significantly contributes to the pathogenesis of Alzheimer's disease (AD). Aβ is known to impair endothelial nitric oxide synthase (eNOS) activity, thus inhibiting endothelial nitric oxide production (NO). METHOD In this study, we investigated Aβ-effects on heat shock protein 90 (HSP90) interaction with eNOS and Akt in cultured vascular endothelial cells and also explored the role of oxidative stress in this process. RESULTS Treatments of endothelial cells (EC) with Aβ promoted the constitutive association of HSP90 with eNOS but abrogated agonist (vascular endothelial growth factor (VEGF))-mediated HSP90 interaction with Akt. This effect resulted in blockade of agonist-mediated phosphorylation of Akt and eNOS at serine 1179. Furthermore, Aβ stimulated the production of reactive oxygen species in endothelial cells and concomitant treatments of the cells with the antioxidant N-acetyl-cysteine (NAC) prevented Aβ effects in promoting HSP90/eNOS interaction and rescued agonist-mediated Akt and eNOS phosphorylation. CONCLUSIONS The obtained data support the hypothesis that oxidative damage caused by Aβ results in altered interaction of HSP90 with Akt and eNOS, therefore promoting vascular dysfunction. This mechanism, by contributing to Aβ-mediated blockade of nitric oxide production, may significantly contribute to the cognitive impairment seen in AD patients.
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Affiliation(s)
- Folami Lamoke
- Department of Ophthalmology, Georgia Regents University, Health Sciences Campus, 1120 15th St., Augusta, GA, 30912, USA.
| | - Valeria Mazzone
- Department of Biology, University of Rome 'Roma Tre', Via Ostiense, 169, Rome, 00154, Italy.
| | - Tiziana Persichini
- Department of Biology, University of Rome 'Roma Tre', Via Ostiense, 169, Rome, 00154, Italy.
| | - Annamaria Maraschi
- Department of Neurology and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Cusano Milanino 20095, Milan, Italy.
| | - Michael Brennan Harris
- Department of Kinesiology, College of William and Mary, 200 Stadium Dr., Williamsburg, VA, 23186, USA.
| | - Richard C Venema
- Vascular Biology Center, Georgia Regents University, 1120 15th St., Augusta, GA, 30912, USA.
| | - Marco Colasanti
- Department of Biology, University of Rome 'Roma Tre', Via Ostiense, 169, Rome, 00154, Italy.
| | - Micaela Gliozzi
- IRC-FSH, Department of Health Sciences, University of Catanzaro 'Magna Graecia', Catanzaro Complesso 'Ninì Barbieri', Roccelletta di Borgia, 88021, Italy.
| | - Carolina Muscoli
- IRC-FSH, Department of Health Sciences, University of Catanzaro 'Magna Graecia', Catanzaro Complesso 'Ninì Barbieri', Roccelletta di Borgia, 88021, Italy. .,IRCCS San Raffaele Pisana, Via di Val Cannuta, 247, 00166, Rome, Italy.
| | - Manuela Bartoli
- Department of Ophthalmology, Georgia Regents University, Health Sciences Campus, 1120 15th St., Augusta, GA, 30912, USA.
| | - Vincenzo Mollace
- IRC-FSH, Department of Health Sciences, University of Catanzaro 'Magna Graecia', Catanzaro Complesso 'Ninì Barbieri', Roccelletta di Borgia, 88021, Italy. .,IRCCS San Raffaele Pisana, Via di Val Cannuta, 247, 00166, Rome, Italy.
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Dihazi GH, Mueller GA, Asif AR, Eltoweissy M, Wessels JT, Dihazi H. Proteomic characterization of adrenal gland embryonic development reveals early initiation of steroid metabolism and reduction of the retinoic acid pathway. Proteome Sci 2015; 13:6. [PMID: 25694770 PMCID: PMC4331441 DOI: 10.1186/s12953-015-0063-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 01/15/2015] [Indexed: 12/15/2022] Open
Abstract
Background Adrenal glands are essential endocrine organs composed of two embryological distinct tissues. Morphological changes during their development are well described, but less understood with regard to their molecular mechanisms. To identify proteins and pathways, which drive the initial steps of the specification of the endocrine function of the adrenal gland, rat’s adrenal glands were isolated at different embryonic days (E): E14, E16, E18, E19 and postnatal day 1 (P1). Results The alteration of the proteome during the stages E16, E19 and P1 was investigated by combining two dimensional gel electrophoresis and mass spectrometric analysis. Out of 594 excised protein spots, 464 spots were identified, resulting in 203 non-redundant proteins. The ontogenic classification of the identified proteins according to their molecular function resulted in 10 different categories, whereas the classification of their biological processes resulted in 19 different groups. This gives an insight into the complex mechanisms underlying adrenal gland development. Interestingly, the expression of retinoic acid pathway proteins was decreased during the development of the adrenal gland, suggesting that this pathway is only important at early stages. On the other hand, key proteins of the cholesterol synthesis increased their expression significantly at E19 revealing the initiation of the endocrine specialization of the adrenal glands. Conclusions This study presents the first comprehensive wide proteome analysis of three different stages of embryonic adrenal gland development. The identified proteins, which were expressed in early stages of development, will shed light on the molecular mechanisms underlying embryonic development of the adrenal gland. Electronic supplementary material The online version of this article (doi:10.1186/s12953-015-0063-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Gry H Dihazi
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany
| | - Gerhard A Mueller
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany
| | - Abdul R Asif
- Department of Clinical Chemistry, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany
| | - Marwa Eltoweissy
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany
| | - Johannes T Wessels
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany
| | - Hassan Dihazi
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany
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Hsia CW, Ho MY, Shui HA, Tsai CB, Tseng MJ. Analysis of dermal papilla cell interactome using STRING database to profile the ex vivo hair growth inhibition effect of a vinca alkaloid drug, colchicine. Int J Mol Sci 2015; 16:3579-98. [PMID: 25664862 PMCID: PMC4346914 DOI: 10.3390/ijms16023579] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/03/2015] [Indexed: 12/28/2022] Open
Abstract
Dermal papillae (DPs) control the formation of hair shafts. In clinical settings, colchicine (CLC) induces patients' hair shedding. Compared to the control, the ex vivo hair fiber elongation of organ cultured vibrissa hair follicles (HFs) declined significantly after seven days of CLC treatment. The cultured DP cells (DPCs) were used as the experimental model to study the influence of CLC on the protein dynamics of DPs. CLC could alter the morphology and down-regulate the expression of alkaline phosphatase (ALP), the marker of DPC activity, and induce IκBα phosphorylation of DPCs. The proteomic results showed that CLC modulated the expression patterns (fold>2) of 24 identified proteins, seven down-regulated and 17 up-regulated. Most of these proteins were presumably associated with protein turnover, metabolism, structure and signal transduction. Protein-protein interactions (PPI) among these proteins, established by Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) database, revealed that they participate in protein metabolic process, translation, and energy production. Furthermore, ubiquitin C (UbC) was predicted to be the controlling hub, suggesting the involvement of ubiquitin-proteasome system in modulating the pathogenic effect of CLC on DPC.
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Affiliation(s)
- Ching-Wu Hsia
- Institute of Molecular Biology and Department of Life Science, National Chung Cheng University, Chia-yi 621, Taiwan.
| | - Ming-Yi Ho
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.
| | - Hao-Ai Shui
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei 114, Taiwan.
| | - Chong-Bin Tsai
- Institute of Molecular Biology and Department of Life Science, National Chung Cheng University, Chia-yi 621, Taiwan.
- Department of Ophthalmology, Chia-yi Christian Hospital, Chia-yi 600, Taiwan.
| | - Min-Jen Tseng
- Institute of Molecular Biology and Department of Life Science, National Chung Cheng University, Chia-yi 621, Taiwan.
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14
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Abstract
Gene Ontology (GO) provides dynamic controlled vocabularies to aid in the description of the functional biological attributes and subcellular locations of gene products from all taxonomic groups (www.geneontology.org). Here we describe collaboration between the renal biomedical research community and the GO Consortium to improve the quality and quantity of GO terms describing renal development. In the associated annotation activity, the new and revised terms were associated with gene products involved in renal development and function. This project resulted in a total of 522 GO terms being added to the ontology and the creation of approximately 9,600 kidney-related GO term associations to 940 UniProt Knowledgebase (UniProtKB) entries, covering 66 taxonomic groups. We demonstrate the impact of these improvements on the interpretation of GO term analyses performed on genes differentially expressed in kidney glomeruli affected by diabetic nephropathy. In summary, we have produced a resource that can be utilized in the interpretation of data from small- and large-scale experiments investigating molecular mechanisms of kidney function and development and thereby help towards alleviating renal disease.
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15
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Dathe C, Daigeler AL, Seifert W, Jankowski V, Mrowka R, Kalis R, Wanker E, Mutig K, Bachmann S, Paliege A. Annexin A2 mediates apical trafficking of renal Na⁺-K⁺-2Cl⁻ cotransporter. J Biol Chem 2014; 289:9983-97. [PMID: 24526686 DOI: 10.1074/jbc.m113.540948] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The furosemide-sensitive Na(+)-K(+)-2Cl(-) cotransporter (NKCC2) is responsible for urine concentration and helps maintain systemic salt homeostasis. Its activity depends on trafficking to, and insertion into, the apical membrane, as well as on phosphorylation of conserved N-terminal serine and threonine residues. Vasopressin (AVP) signaling via PKA and other kinases activates NKCC2. Association of NKCC2 with lipid rafts facilitates its AVP-induced apical translocation and activation at the surface. Lipid raft microdomains typically serve as platforms for membrane proteins to facilitate their interactions with other proteins, but little is known about partners that interact with NKCC2. Yeast two-hybrid screening identified an interaction between NKCC2 and the cytosolic protein, annexin A2 (AnxA2). Annexins mediate lipid raft-dependent trafficking of transmembrane proteins, including the AVP-regulated water channel, aquaporin 2. Here, we demonstrate that AnxA2, which binds to phospholipids in a Ca(2+)-dependent manner and may organize microdomains, is codistributed with NKCC2 to promote its apical translocation in response to AVP stimulation and low chloride hypotonic stress. NKCC2 and AnxA2 interact in a phosphorylation-dependent manner. Phosphomimetic AnxA2 carrying a mutant phosphoacceptor (AnxA2-Y24D-GFP) enhanced surface expression and raft association of NKCC2 by 5-fold upon low chloride hypotonic stimulation, whereas AnxA2-Y24A-GFP and PKC-dependent AnxA2-S26D-GFP did not. As the AnxA2 effect involved only nonphosphorylated NKCC2, it appears to affect NKCC2 trafficking. Overexpression or knockdown experiments further supported the role of AnxA2 in the apical translocation and surface expression of NKCC2. In summary, this study identifies AnxA2 as a lipid raft-associated trafficking factor for NKCC2 and provides mechanistic insight into the regulation of this essential cotransporter.
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Affiliation(s)
- Christin Dathe
- From the Department of Anatomy, Charité-Universitätsmedizin Berlin, 10115 Berlin
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16
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Comparative proteomic analysis of the hepatic response to heat stress in Muscovy and Pekin ducks: insight into thermal tolerance related to energy metabolism. PLoS One 2013; 8:e76917. [PMID: 24116183 PMCID: PMC3792036 DOI: 10.1371/journal.pone.0076917] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Accepted: 09/05/2013] [Indexed: 11/22/2022] Open
Abstract
The Pekin duck, bred from the mallard (Anas platyrhynchos) in china, is one of the most famous meat duck species in the world. However, it is more sensitive to heat stress than Muscovy duck, which is believed to have originated in South America. With temperature raising, mortality, laying performance, and meat quality of the Pekin duck are severely affected. This study aims to uncover the temperature-dependent proteins of two duck species using comparative proteomic approach. Duck was cultured under 39°C ± 0.5°C for 1 h, and then immediately returned to 20°C for a 3 h recovery period, the liver proteins were extracted and electrophoresed in two-dimensional mode. After analysis of gel images, 61 differentially expressed proteins were detected, 54 were clearly identified by MALDI TOF/TOF MS. Of the 54 differentially expressed protein spots identified, 7 were found in both species, whereas 47 were species specific (25 in Muscovy duck and 22 in Pekin duck). As is well known, chaperone proteins, such as heat shock protein (HSP) 70 and HSP10, were abundantly up-regulated in both species in response to heat stress. However, we also found that several proteins, such as α-enolase, and S-adenosylmethionine synthetase, showed different expression patterns in the 2 duck species. The enriched biological processes were grouped into 3 main categories according to gene ontology analysis: cell death and apoptosis (20.93%), amino acid metabolism (13.95%) and oxidation reduction (20.93%). The mRNA levels of several differentially expressed protein were investigated by real-time RT-PCR. To our knowledge, this study is the first to provide insights into the differential expression of proteins following heat stress in ducks and enables better understanding of possible heat stress response mechanisms in animals.
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Buchmaier BS, Bibi A, Müller GA, Dihazi GH, Eltoweissy M, Kruegel J, Dihazi H. Renal cells express different forms of vimentin: the independent expression alteration of these forms is important in cell resistance to osmotic stress and apoptosis. PLoS One 2013; 8:e68301. [PMID: 23874579 PMCID: PMC3708942 DOI: 10.1371/journal.pone.0068301] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Accepted: 06/03/2013] [Indexed: 11/18/2022] Open
Abstract
Osmotic stress has been shown to regulate cytoskeletal protein expression. It is generally known that vimentin is rapidly degraded during apoptosis by multiple caspases, resulting in diverse vimentin fragments. Despite the existence of the known apoptotic vimentin fragments, we demonstrated in our study the existence of different forms of vimentin VIM I, II, III, and IV with different molecular weights in various renal cell lines. Using a proteomics approach followed by western blot analyses and immunofluorescence staining, we proved the apoptosis-independent existence and differential regulation of different vimentin forms under varying conditions of osmolarity in renal cells. Similar impacts of osmotic stress were also observed on the expression of other cytoskeleton intermediate filament proteins; e.g., cytokeratin. Interestingly, 2D western blot analysis revealed that the forms of vimentin are regulated independently of each other under glucose and NaCl osmotic stress. Renal cells, adapted to high NaCl osmotic stress, express a high level of VIM IV (the form with the highest molecular weight), besides the three other forms, and exhibit higher resistance to apoptotic induction with TNF-α or staurosporin compared to the control. In contrast, renal cells that are adapted to high glucose concentration and express only the lower-molecular-weight forms VIM I and II, were more susceptible to apoptosis. Our data proved the existence of different vimentin forms, which play an important role in cell resistance to osmotic stress and are involved in cell protection against apoptosis.
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Affiliation(s)
- Bettina S. Buchmaier
- Department of Nephrology and Rheumatology, Georg-August University, Göttingen, Germany
| | - Asima Bibi
- Department of Nephrology and Rheumatology, Georg-August University, Göttingen, Germany
| | - Gerhard A. Müller
- Department of Nephrology and Rheumatology, Georg-August University, Göttingen, Germany
| | - Gry H. Dihazi
- Department of Nephrology and Rheumatology, Georg-August University, Göttingen, Germany
| | - Marwa Eltoweissy
- Department of Nephrology and Rheumatology, Georg-August University, Göttingen, Germany
| | - Jenny Kruegel
- Department of Nephrology and Rheumatology, Georg-August University, Göttingen, Germany
| | - Hassan Dihazi
- Department of Nephrology and Rheumatology, Georg-August University, Göttingen, Germany
- * E-mail:
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18
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Steiner SR, Milton E, Philbert MA. A comparative study of protein carbonylation and mitochondrial dysfunction using the neurotoxicants 1,3-dinitrobenzene, 3-nitropropionic acid, and 3-chloropropanediol. Neurotoxicology 2013; 37:74-84. [PMID: 23623743 DOI: 10.1016/j.neuro.2013.04.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 04/06/2013] [Accepted: 04/14/2013] [Indexed: 11/17/2022]
Abstract
This comparative evaluation of neurotoxicants previously identified as models of chemical-induced mitochondrial dysfunction and energy deprivation demonstrated that subtoxic concentrations of 1,3-dinitrobenzene (1,3-DNB), 3-nitropropionic acid (3-NPA), and 3-chloropropanediol (3-CPD) each led to concentration-dependent loss of the mitochondrial membrane potential (ΔΨm) associated with similar patterns of protein carbonylation. Subtoxic concentrations of each neurotoxicant were determined by measuring DI TNC1 cell viability using the MTS cell proliferation assay. Although exposure 1 μM, 10 μM, and 100 μM concentrations of each toxicant did not result in loss of cell viability after 48 h, exposure to each toxicant at these concentrations led to concentration-dependent loss of tetramethyl rhodamine methyl ester (TMRM) fluorescence over the same exposure period. Preincubation with the antioxidant, deferoxamine, was effective in preventing loss of TMRM flurorescence. Through the combined use of two-dimensional polyacrylamide gel electrophoresis (2D PAGE) and Oxyblot analysis, this study demonstrated that exposure to each toxicant resulted in the formation of distinctly similar patterns of protein carbonylation comprised of specific proteins identified with tandem MS/MS. Our results provide insight as to how exposure to different neurotoxicants that enhance oxidative stress may, in fact, lead to mitochondrial injury and subsequent toxicity through selective, yet shared, pathways of protein modification by oxidative carbonylation.
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Affiliation(s)
- Stephen R Steiner
- Toxicology Program, Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI 48109-2029, USA.
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19
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Park EJ, Lim JS, Jung HJ, Kim E, Han KH, Kwon TH. The role of 70-kDa heat shock protein in dDAVP-induced AQP2 trafficking in kidney collecting duct cells. Am J Physiol Renal Physiol 2013; 304:F958-71. [DOI: 10.1152/ajprenal.00469.2012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
It has been reported that several proteins [heat shock protein 70 (Hsp70 and Hsc70), annexin II, and tropomyosin 5b] interact with the Ser256 residue on the COOH terminus of aquaporin-2 (AQP2), where vasopressin-induced phosphorylation occurs for mediating AQP2 trafficking. However, it remains unknown whether these proteins, particularly Hsp70, play a role in AQP2 trafficking. Semiquantitative immunoblotting revealed that renal expression of AQP2 and Hsp70 was significantly increased in water-restricted or dDAVP-infused rats. In silico analysis of the 5′-flanking regions of AQP2, Hsp70-1, and Hsp70-2 genes revealed that transcriptional regulator binding elements associated with cAMP response were identified at both the Hsp70-1 and Hsp70-2 promoter regions, in addition to AQP2. Luciferase reporter assay demonstrated the significant increase of luminescence after dDAVP stimulation (10−8 M, 6 h) in the LLC-PK1 cells transfected with luciferase vector containing 1 kb of the 5′-flanking region of Hsp70-2 gene. Hsp70-2 protein expression was also increased in mpkCCDc14 cells treated by dDAVP in a concentration-dependent manner. Cell surface biotinylation analysis demonstrated that forskolin (10−5 M, 15 min)-induced AQP2 targeting to the apical plasma membrane was significantly attenuated in the mpkCCDc14 cells with Hsp70-2 knockdown. Moreover, forskolin-induced AQP2 phosphorylation (Ser256) was not significantly induced in the mpkCCDc14 cells with Hsp70-2 knockdown. In contrast, Hsp70-2 knockdown did not affect the dDAVP-induced AQP2 abundance. In addition, siRNA-directed knockdown of Hsp70 significantly decreased cell viability. The results suggest that Hsp70 is likely to play a role in AQP2 trafficking to the apical plasma membrane, partly through affecting AQP2 phosphorylation at Ser256 and cell viability.
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Affiliation(s)
- Eui-Jung Park
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; and
| | - Jung-Suk Lim
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; and
| | - Hyun Jun Jung
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; and
| | - Eunjung Kim
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; and
| | - Ki-Hwan Han
- Department of Anatomy, Ewha Womans University School of Medicine, Seoul, Korea
| | - Tae-Hwan Kwon
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; and
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20
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Swigonska S, Weidner S. Proteomic analysis of response to long-term continuous stress in roots of germinating soybean seeds. JOURNAL OF PLANT PHYSIOLOGY 2013; 170:470-9. [PMID: 23394790 DOI: 10.1016/j.jplph.2012.11.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 10/12/2012] [Accepted: 11/16/2012] [Indexed: 05/27/2023]
Abstract
Germination is a complex process, highly dependent on various environmental factors, including temperature and water availability. Germinating soybean seeds are especially vulnerable to unfavorable environmental conditions and exposure to long-term abiotic stresses may result in diminishing much of the yield and most importantly - restrained germination. In the present study, a proteomic approach was employed to analyze influence of cold and osmotic stress on roots of germinated soybean (Glycine max, L.) seeds. Seeds were germinating under continuous conditions of cold stress (+10°C/H2O), osmotic stress (+25°C/-0.2MPa) as well as cold and osmotic stress combined (+10°C/-0.2MPa). Proteome maps established for control samples and stress-treated samples displayed 1272 CBB-stained spots. A total of 59 proteins, present in both control and stress-treated samples and showing significant differences in volume, were identified with LC/nanoESI-MS. Identified proteins divided into functional categories, revealed 9 proteins involved in plant defense, 8 proteins responsible for plant destination and storage and 10 proteins involved in various tracks of carbohydrate metabolism. Furthermore, a number of proteins were assigned to electron transport, range of metabolic pathways, secondary metabolism, protein synthesis, embryogenesis and development, signal transduction, cellular transport, translocation and storage. By analyzing differences in expression patterns, it was possible to trace the soybean response to long-term abiotic stress as well as to distinguish similarities and differences between response to cold and osmotic stress.
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Affiliation(s)
- Sylwia Swigonska
- Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego Street 1a, 10-957 Olsztyn, Poland.
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Moresco RN, Sangoi MB, De Carvalho JAM, Tatsch E, Bochi GV. Diabetic nephropathy: traditional to proteomic markers. Clin Chim Acta 2013; 421:17-30. [PMID: 23485645 DOI: 10.1016/j.cca.2013.02.019] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 02/06/2013] [Accepted: 02/09/2013] [Indexed: 01/11/2023]
Abstract
Diabetic nephropathy (DN) is one of the major microvascular complications of diabetes and it is defined as a rise in the urinary albumin excretion (UAE) rate and abnormal renal function. Currently, changes in albuminuria are considered a hallmark of onset or progression of DN. However, some patients with diabetes have advanced renal pathological changes and progressive kidney function decline even if urinary albumin levels are in the normal range, indicating that albuminuria is not the perfect marker for the early detection of DN. The present article provides an overview of the literature reporting some relevant biomarkers that have been found to be associated with DN and that potentially may be used to predict the onset and/or monitor the progression of nephropathy. In particular, biomarkers of renal damage, inflammation, and oxidative stress may be useful tools for detection at an early stage or prediction of DN. Proteomic-based biomarker discovery represents a novel strategy to improve diagnosis, prognosis and treatment of DN; however, proteomics-based approaches are not yet available in most of the clinical chemistry laboratories. The use of a panel with a combination of biomarkers instead of urinary albumin alone seems to be an interesting approach for early detection of DN, including markers of glomerular damage (e.g., albumin), tubular damage (e.g., NAG and KIM-1), inflammation (e.g., TNF-α) and oxidative stress (e.g., 8-OHdG) because these mechanisms contribute to the development and outcomes of this disease.
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Affiliation(s)
- Rafael N Moresco
- Laboratório de Pesquisa em Bioquímica Clínica, Departamento de Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
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Pešić I, Müller GA, Baumann C, Dihazi GH, Koziolek MJ, Eltoweissy M, Bramlage C, Asif AR, Dihazi H. Cellulose membranes are more effective in holding back vital proteins and exhibit less interaction with plasma proteins during hemodialysis. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2013; 1834:754-62. [PMID: 23369790 DOI: 10.1016/j.bbapap.2013.01.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 01/15/2013] [Accepted: 01/18/2013] [Indexed: 11/27/2022]
Abstract
The vast majority of patients with end-stage renal disease are treated with intermittent hemodialysis as a form of renal replacement therapy. To investigate the impact of hemodialysis membrane material on vital protein removal, dialysates from 26 well-characterized hemodialysis patients were collected 5 min after beginning, during 5h of treatment, as well as 5 min before ending of the dialysis sessions. Dialysis sessions were performed using either modified cellulose (n=12) (low-flux and high flux) or synthetic Polyflux (n=14) (low-flux and high-flux) dialyzer. Protein removal during hemodialysis was quantified and the dialysate proteome patterns were analyzed by 2-DE, MS and Western blot. There was a clear correlation between the type of membrane material and the amount of protein removed. Synthetic Polyflux membranes exhibit strong interaction with plasma proteins resulting in a significantly higher protein loss compared to modified cellulosic membrane. Moreover, the proteomics analysis showed that the removed proteins represented different molecular weight range and different functional groups: transport proteins, protease inhibitors, proteins with role in immune response and regulations, constructive proteins and as a part of HLA immune complex. The effect of this protein removal on hemodialysis treatment outcome should be investigated in further studies.
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Affiliation(s)
- Ivana Pešić
- Department of Nephrology and Rheumatology, Georg-August University Goettingen, Goettingen, Germany
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23
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Brouillard F, Fritsch J, Edelman A, Ollero M. Contribution of proteomics to the study of the role of cytokeratins in disease and physiopathology. Proteomics Clin Appl 2012; 2:264-85. [PMID: 21136830 DOI: 10.1002/prca.200780018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Cytokeratins (CKs), the most abundant group of cytoskeletal intermediate filaments, and proteomics are strongly connected. On the one hand, proteomics has been extremely useful to uncover new features and functions of CKs, on the other, the highly abundant CKs serve as an exceptional tool to test new technological developments in proteomics. As a result, proteomics has contributed to finding valuable associations of CKs with diseases as diverse as cancer, cystic fibrosis, steatohepatitis, viral and bacterial infection, keratoconus, vitreoretinopathy, preeclampsia or the chronic fatigue syndrome, as well as to characterizing their participation in a number of physiopathological processes, including drug resistance, response to toxicants, inflammation, stem cell differentiation, embryo development, and tissue repair. In some cases, like in cystic fibrosis, CKs have been described as potential therapeutic targets. The development of a specific field of proteomics where CKs become the main subject of research aims and hypotheses is suggested.
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Affiliation(s)
- Franck Brouillard
- INSERM, Unité 845, Paris, France; Faculté de Médecine René Descartes, Université Paris-Descartes, Plateau Protéomes IFR94, Paris, France
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Carmosino M, Rizzo F, Procino G, Zolla L, Timperio AM, Basco D, Barbieri C, Torretta S, Svelto M. Identification of moesin as NKCC2-interacting protein and analysis of its functional role in the NKCC2 apical trafficking. Biol Cell 2012; 104:658-76. [PMID: 22708623 DOI: 10.1111/boc.201100074] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2011] [Accepted: 06/15/2012] [Indexed: 12/16/2022]
Abstract
BACKGROUND INFORMATION The renal Na(+) -K(+) -2Cl(-) co-transporter (NKCC2) is expressed in kidney thick ascending limb cells, where it mediates NaCl re-absorption regulating body salt levels and blood pressure. RESULTS In this study, we used a well-characterised NKCC2 construct (c-NKCC2) to identify NKCC2-interacting proteins by an antibody shift assay coupled with blue native/SDS-PAGE and mass spectrometry. Among the interacting proteins, we identified moesin, a protein belonging to ezrin, eadixin and moesin family. Co-immunoprecipitation experiments confirmed that c-NKCC2 interacts with the N-terminal domain of moesin in LLC-PK1 cells. Moreover, c-NKCC2 accumulates in intracellular and sub-apical vesicles in cells transfected with a moesin dominant negative green fluorescent protien (GFP)-tagged construct. In addition, moesin knock-down by short interfering RNA decreases by about 50% c-NKCC2 surface expression. Specifically, endocytosis and exocytosis assays showed that moesin knock-down does not affect c-NKCC2 internalisation but strongly reduces exocytosis of the co-transporter. CONCLUSIONS Our data clearly demonstrate that moesin plays a critical role in apical membrane insertion of NKCC2, suggesting a possible involvement of moesin in regulation of Na(+) and Cl(-) absorption in the kidney.
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Affiliation(s)
- Monica Carmosino
- Department of Biosciences, Biotechnologies and Pharmacological Sciences, University of Bari, 70126 Bari, Italy.
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Zheleznova NN, Yang C, Ryan RP, Halligan BD, Liang M, Greene AS, Cowley AW. Mitochondrial proteomic analysis reveals deficiencies in oxygen utilization in medullary thick ascending limb of Henle in the Dahl salt-sensitive rat. Physiol Genomics 2012; 44:829-42. [PMID: 22805345 DOI: 10.1152/physiolgenomics.00060.2012] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The renal medullary thick ascending limb (mTAL) of the Dahl salt-sensitive (SS) rat is the site of enhanced NaCl reabsorption and excess superoxide production. In the present studies we isolated mitochondria from mTAL of SS and salt-resistant control strain SS.13(BN) rats on 0.4 and 8% salt diet for 7 days and performed a proteomic analysis. Purity of mTAL and mitochondria isolations exceeded 93.6 and 55%, respectively. Using LC/MS spectral analysis techniques we identified 96 mitochondrial proteins in four biological mTAL mitochondria samples, run in duplicate, as defined by proteins with a false discovery rate <5% and scan count ≥2. Seven of these 96 proteins, including IDH2, ACADM, SCOT, Hsp60, ATPA, EFTu, and VDAC2 were differentially expressed between the two rat strains. Oxygen consumption and high-resolution respirometry analyses showed that mTAL cells and the mitochondria in the outer medulla of SS rats fed high-salt diet exhibited lower rates of oxygen utilization compared with those from SS.13(BN) rats. These studies advance the conventional proteomic paradigm of focusing exclusively upon whole tissue homogenates to a focus upon a single cell type and specific subcellular organelle. The results reveal the importance of a largely unexplored role for deficiencies of mTAL mitochondrial metabolism and oxygen utilization in salt-induced hypertension and renal medullary oxidative stress.
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Affiliation(s)
- Nadezhda N Zheleznova
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
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Agarwal NK, Chen CH, Cho H, Boulbès DR, Spooner E, Sarbassov DD. Rictor regulates cell migration by suppressing RhoGDI2. Oncogene 2012; 32:2521-6. [PMID: 22777355 PMCID: PMC3470753 DOI: 10.1038/onc.2012.287] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Rictor and its binding partner Sin1 are indispensable components of mTORC2 (mammalian Target of Rapamycin Complex 2). The mTORC2 signaling complex functions as the regulatory kinase of the distinct members of AGC kinase family known to regulate cell proliferation and survival. In the early chemotaxis studies in Dictyostelium, the rictor's ortholog has been identified as a regulator of cell migration. How rictor regulates cell migration is poorly characterized. Here we show that rictor regulates cell migration by controlling a potent inhibitor of Rho proteins known as the Rho-GDP dissociation inhibitor 2 (RhoGDI2). Based on our proteomics study we identified that the rictor-dependent deficiency in cell migration is caused by up-regulation of RhoGDI2 leading to a low activity of Rac and Cdc42. We found that a suppression of RhoGDI2 by rictor is not related to the Sin1 or raptor function that excludes a role of mTORC2 or mTORC1 in regulation of RhoGDI2. Our study reveals that rictor by suppressing RhoGDI2 promotes activity of the Rho proteins and cell migration.
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Affiliation(s)
- N K Agarwal
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Starkey JM, Tilton RG. Proteomics and systems biology for understanding diabetic nephropathy. J Cardiovasc Transl Res 2012; 5:479-90. [PMID: 22581264 DOI: 10.1007/s12265-012-9372-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Accepted: 05/01/2012] [Indexed: 01/07/2023]
Abstract
Like many diseases, diabetic nephropathy is defined in a histopathological context and studied using reductionist approaches that attempt to ameliorate structural changes. Novel technologies in mass spectrometry-based proteomics have the ability to provide a deeper understanding of the disease beyond classical histopathology, redefine the characteristics of the disease state, and identify novel approaches to reduce renal failure. The goal is to translate these new definitions into improved patient outcomes through diagnostic, prognostic, and therapeutic tools. Here, we review progress made in studying the proteomics of diabetic nephropathy and provide an introduction to the informatics tools used in the analysis of systems biology data, while pointing out statistical issues for consideration. Novel bioinformatics methods may increase biomarker identification, and other tools, including selective reaction monitoring, may hasten clinical validation.
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Affiliation(s)
- Jonathan M Starkey
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX 77555-1060, USA
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Sugimura S, Akai T, Hashiyada Y, Somfai T, Inaba Y, Hirayama M, Yamanouchi T, Matsuda H, Kobayashi S, Aikawa Y, Ohtake M, Kobayashi E, Konishi K, Imai K. Promising system for selecting healthy in vitro-fertilized embryos in cattle. PLoS One 2012; 7:e36627. [PMID: 22590579 PMCID: PMC3348877 DOI: 10.1371/journal.pone.0036627] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Accepted: 04/03/2012] [Indexed: 11/18/2022] Open
Abstract
Conventionally, in vitro–fertilized (IVF) bovine embryos are morphologically evaluated at the time of embryo transfer to select those that are likely to establish a pregnancy. This method is, however, subjective and results in unreliable selection. Here we describe a novel selection system for IVF bovine blastocysts for transfer that traces the development of individual embryos with time-lapse cinematography in our developed microwell culture dish and analyzes embryonic metabolism. The system can noninvasively identify prognostic factors that reflect not only blastocyst qualities detected with histological, cytogenetic, and molecular analysis but also viability after transfer. By assessing a combination of identified prognostic factors—(i) timing of the first cleavage; (ii) number of blastomeres at the end of the first cleavage; (iii) presence or absence of multiple fragments at the end of the first cleavage; (iv) number of blastomeres at the onset of lag-phase, which results in temporary developmental arrest during the fourth or fifth cell cycle; and (v) oxygen consumption at the blastocyst stage—pregnancy success could be accurately predicted (78.9%). The conventional method or individual prognostic factors could not accurately predict pregnancy. No newborn calves showed neonatal overgrowth or death. Our results demonstrate that these five predictors and our system could provide objective and reliable selection of healthy IVF bovine embryos.
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Affiliation(s)
| | - Tomonori Akai
- Dai Nippon Printing Co., Ltd., Kashiwa, Chiba, Japan
| | | | - Tamás Somfai
- National Livestock Breeding Center, Nishigo, Fukushima, Japan
- National Institute of Livestock and Grassland Science, Tsukuba, Ibaraki, Japan
| | - Yasushi Inaba
- National Livestock Breeding Center, Nishigo, Fukushima, Japan
- National Institute of Livestock and Grassland Science, Tsukuba, Ibaraki, Japan
| | | | | | - Hideo Matsuda
- National Livestock Breeding Center, Nishigo, Fukushima, Japan
| | - Shuji Kobayashi
- National Livestock Breeding Center, Nishigo, Fukushima, Japan
| | - Yoshio Aikawa
- National Livestock Breeding Center, Nishigo, Fukushima, Japan
| | - Masaki Ohtake
- National Livestock Breeding Center, Nishigo, Fukushima, Japan
| | - Eiji Kobayashi
- National Livestock Breeding Center, Nishigo, Fukushima, Japan
| | | | - Kei Imai
- National Livestock Breeding Center, Nishigo, Fukushima, Japan
- * E-mail:
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Calreticulin signaling in health and disease. Int J Biochem Cell Biol 2012; 44:842-6. [PMID: 22373697 DOI: 10.1016/j.biocel.2012.02.009] [Citation(s) in RCA: 142] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 02/08/2012] [Accepted: 02/13/2012] [Indexed: 01/19/2023]
Abstract
Calreticulin is an endoplasmic reticulum Ca(2+) binding chaperone that has multiple functions inside and outside of the endoplasmic reticulum. It is involved in the quality control of newly synthesized proteins and glycoproteins, interacting with various other endoplasmic reticulum chaperones, specifically calnexin and ER protein of 57-kDa in the calreticulin/calnexin cycle. Calreticulin also plays a crucial role in regulating intracellular Ca(2+) homeostasis, associating calreticulin with a wide variety of signaling processes, such as cardiogenesis, adipocyte differentiation and cellular stress responses. The role of calreticulin outside of the endoplasmic reticulum is also extensive, including functions in wound healing and immunity. Therefore, calreticulin has important implications in health and disease. Signaling facts.
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Kim JY, Kim YG, Lee GM. Differential in-gel electrophoresis (DIGE) analysis of CHO cells under hyperosmotic pressure: osmoprotective effect of glycine betaine addition. Biotechnol Bioeng 2012; 109:1395-403. [PMID: 22252946 DOI: 10.1002/bit.24442] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2011] [Revised: 01/04/2012] [Accepted: 01/04/2012] [Indexed: 12/13/2022]
Abstract
The use of glycine betaine combined with hyperosmolality is known to be an efficient means for achieving high protein production in recombinant Chinese hamster ovary (rCHO) cells. In order to understand the intracellular events and identify the key factors in rCHO cells cultivated with glycine betaine under hyperosmotic conditions, two-dimensional differential in-gel electrophoresis (2D-DIGE) followed by mass spectrometric analysis was applied. Differentially expressed 19 protein spots were selected and 16 different kinds of proteins were successfully identified. The identified proteins were associated with cellular metabolism (PEPCK, GAPDH, and PK), cellular architecture (β-tubulin and β-actin), protein folding (GRP78 and OSP94), mRNA processing (Rbm34, ACF, and IPMK), and protein secretion (γ-COP). 2D-Western blot analysis of β-tubulin, GAPDH, Peroxidoxin-1, and GRP78 confirmed the proteomic findings. The proteins identified from this study, which are related to cell growth and antibody production, can be applied to cell engineering for maximizing the efficacy of the use of glycine betaine combined with hyperosmolality in rCHO cells.
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Affiliation(s)
- Jee Yon Kim
- Department of Biological Sciences, Graduate School of Nanoscience and Technology (WCU), KAIST, 373-1 Kusong-Dong, Yusong-Gu, Daejon 305-701, Korea
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Impaired chromatin remodelling at STAT1-regulated promoters leads to global unresponsiveness of Toxoplasma gondii-infected macrophages to IFN-γ. PLoS Pathog 2012; 8:e1002483. [PMID: 22275866 PMCID: PMC3262016 DOI: 10.1371/journal.ppat.1002483] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Accepted: 11/29/2011] [Indexed: 11/25/2022] Open
Abstract
Intracellular pathogens including the apicomplexan and opportunistic parasite Toxoplasma gondii profoundly modify their host cells in order to establish infection. We have shown previously that intracellular T. gondii inhibit up-regulation of regulatory and effector functions in murine macrophages (MΦ) stimulated with interferon (IFN)-γ, which is the cytokine crucial for controlling the parasites' replication. Using genome-wide transcriptome analysis we show herein that infection with T. gondii leads to global unresponsiveness of murine macrophages to IFN-γ. More than 61% and 89% of the transcripts, which were induced or repressed by IFN-γ in non-infected MΦ, respectively, were not altered after stimulation of T. gondii-infected cells with IFN-γ. These genes are involved in a variety of biological processes, which are mostly but not exclusively related to immune responses. Analyses of the underlying mechanisms revealed that IFN-γ-triggered nuclear translocation of STAT1 still occurred in Toxoplasma-infected MΦ. However, STAT1 bound aberrantly to oligonucleotides containing the IFN-γ-responsive gamma-activated site (GAS) consensus sequence. Conversely, IFN-γ did not induce formation of active GAS-STAT1 complexes in nuclear extracts from infected MΦ. Mass spectrometry of protein complexes bound to GAS oligonucleotides showed that T. gondii-infected MΦ are unable to recruit non-muscle actin to IFN-γ-responsive DNA sequences, which appeared to be independent of stimulation with IFN-γ and of STAT1 binding. IFN-γ-induced recruitment of BRG-1 and acetylation of core histones at the IFN-γ-regulated CIITA promoter IV, but not β-actin was diminished by >90% in Toxoplasma-infected MΦ as compared to non-infected control cells. Remarkably, treatment with histone deacetylase inhibitors restored the ability of infected macrophages to express the IFN-γ regulated genes H2-A/E and CIITA. Taken together, these results indicate that Toxoplasma-infected MΦ are unable to respond to IFN-γ due to disturbed chromatin remodelling, but can be rescued using histone deacetylase inhibitors. Toxoplasma gondii is a common unicellular parasite of humans and other vertebrates and can lead to overt disease mostly in immune-suppressed patients or in fetuses. Since IFN-γ is the major mediator of resistance against T. gondii, inhibition of IFN-γ-mediated gene expression may be a crucial mechanism to allow parasite survival in the immune-competent hosts. Here, we used genome-wide expression profiling to show that parasite infection renders murine macrophages globally unresponsive to stimulation with IFN-γ. This results in severe defects of infected macrophages to regulate a variety of immune-related, but also immune-unrelated biological pathways. By analysing the underlying mechanisms, we provide substantial evidence that Toxoplasma interferes with the assembly of chromatin remodelling complexes at IFN-γ-responsive DNA sequences. Furthermore, binding of the transcription factor signal transducer and activator of transcription 1 (STAT1) to IFN-γ-regulated promoters, but not its nuclear import is disturbed in infected cells. The acetylation of histones at IFN-γ-regulated promoters was found to be severely impaired. Importantly, treatment with histone deacetylase inhibitors rescues Toxoplasma-infected macrophages from the inability to respond to IFN-γ. Our study reveals new insights into the evasion of IFN-γ-mediated host immunity by T. gondii, and opens the possibility of a novel intervention strategy against T. gondii by modulating this parasite-host interaction.
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Tomanek L, Zuzow MJ, Hitt L, Serafini L, Valenzuela JJ. Proteomics of hyposaline stress in blue mussel congeners (genus Mytilus): implications for biogeographic range limits in response to climate change. J Exp Biol 2012; 215:3905-16. [DOI: 10.1242/jeb.076448] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Summary
Climate change is affecting species' physiology, pushing environmental tolerance limits and shifting distribution ranges. In addition to temperature and ocean acidification, increasing levels of hyposaline stress due to extreme precipitation events and freshwater runoff may be driving some of the reported recent range shifts in marine organisms. Using 2D gel electrophoresis and tandem mass spectrometry, we characterized the proteomic responses of the cold-adapted blue mussel species Mytilus trossulus, a native to the Pacific coast of North America, and the warm-adapted M. galloprovincialis, a Mediterranean invader that has replaced the native from the southern part of its range, but may be limited from expanding north due to hyposaline stress. After exposing laboratory-acclimated mussels for 4 h to two different experimental treatments of hyposaline conditions and one control treatment (24.5 and 29.8 and 35.0 psu, respectively) followed by a 0 and 24 h recovery at ambient salinity (35 psu), we detected changes in the abundance of molecular chaperones of the endoplasmic reticulum (ER), indicating protein unfolding, during stress exposure. Other common responses included changes in small GTPases of the Ras-superfamily during recovery, which suggest a role for vesicle transport, and cytoskeletal adjustments associated with cell volume, as indicated by cytoskeletal elements such as actin, tubulin, intermediate filaments and several actin-binding regulatory proteins. Changes of proteins involved in energy metabolism and scavenging of reactive oxygen species (ROS) suggest a reduction in overall energy metabolism during recovery. Principal component analyses of protein abundances suggest that M. trossulus is able to respond to a greater hyposaline challenge (24.5 psu) than M. galloprovincialis (29.8 psu), as shown by changing abundances of proteins involved in protein chaperoning, vesicle transport, cytoskeletal adjustments by actin-regulatory proteins, energy metabolism and oxidative stress. While proteins involved in energy metabolism were lower in M. trossulus during recovery from hyposaline stress, M. galloprovincialis showed higher abundances of those proteins at 29.8 psu, suggesting an energetic constraint in the invader but not the native congener. Both species showed lower levels of oxidative stress proteins during recovery. In addition, oxidative stress proteins associated with protein synthesis and folding in the ER, showed lower levels during recovery in M. galloprovincialis, in parallel with ER chaperones, indicating a reduction in protein synthesis. These differences may enable the native M. trossulus to cope with greater hyposaline stress in the northern part of its range. Furthermore, these differences may help M. trossulus to outcompete M. galloprovincialis in the southern part of M. trossulus' current range, thereby preventing M. galloprovincialis from expanding further north.
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Impact of cisplatin administration on protein expression levels in renal cell carcinoma: a proteomic analysis. Eur J Pharmacol 2011; 670:50-7. [PMID: 21924258 DOI: 10.1016/j.ejphar.2011.08.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 08/11/2011] [Accepted: 08/27/2011] [Indexed: 11/24/2022]
Abstract
Renal cell carcinoma (RCC) is the most common renal neoplasm in adults. Considering that chemoresistance is a typical feature of RCC, every effort should be made in order to identify mechanisms of drug resistance. We used two-dimensional gel electrophoresis and mass spectrometry to study changes in protein expression levels that occur in primary resistant LN78 RCC cells when treated with therapeutic concentrations of cisplatin. Expression differences of selected proteins were confirmed by immunoblot. Up-regulation of heat-shock proteins can block apoptosis indirectly by altered protein folding and by direct interaction with apoptosis regulatory proteins. Cyclophilin A and stratifin can modify cell cycle control and enable tumor cells to escape and further proliferate despite DNA damage caused by cisplatin. Increased activity of glycolytic enzymes reflect metabolic adaptations to increased energy requirements as well as converting to alternative energy sources because of cisplatin-induced disturbed mitochondrial oxidation. Changes in cytoskeletal proteins may change the handling of cisplatin by altering transport and increasing cellular efflux of the drug. Repression of vimentin and disturbance of antioxidative mechanisms may represent vulnerable points in tumor cellular defense against cisplatin. The involvement of these proteins in cisplatin resistance and their potential as therapeutic targets requires further evaluation.
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Pešić I, Stefanović V, Müller GA, Müller CA, Čukuranović R, Jahn O, Bojanić V, Koziolek M, Dihazi H. Identification and validation of six proteins as marker for endemic nephropathy. J Proteomics 2011; 74:1994-2007. [DOI: 10.1016/j.jprot.2011.05.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 05/07/2011] [Accepted: 05/10/2011] [Indexed: 01/09/2023]
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Bibi A, Agarwal NK, Dihazi GH, Eltoweissy M, Van Nguyen P, Mueller GA, Dihazi H. Calreticulin is crucial for calcium homeostasis mediated adaptation and survival of thick ascending limb of Henle's loop cells under osmotic stress. Int J Biochem Cell Biol 2011; 43:1187-97. [PMID: 21554974 DOI: 10.1016/j.biocel.2011.04.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 03/24/2011] [Accepted: 04/18/2011] [Indexed: 01/13/2023]
Abstract
The thick ascending limb of Henle's loop (TALH) is normally exposed to variable and often very high osmotic stress and involves different mechanisms to counteract this stress. ER resident calcium binding proteins especially calreticulin (CALR) play an important role in different stress balance mechanisms. To investigate the role of CALR in renal epithelial cells adaptation and survival under osmotic stress, two-dimensional fluorescence difference gel electrophoresis combined with mass spectrometry and functional proteomics were performed. CALR expression was significantly altered in TALH cells exposed to osmotic stress, whereas renal inner medullary collecting duct cells and interstitial cells exposed to hyperosmotic stress showed no significant changes in CALR expression. Moreover, a time dependent downregulation of CALR was accompanied with continuous change in the level of free intracellular calcium. Inhibition of the calcium release, through IP3R antagonist, prevented CALR expression alteration under hyperosmotic stress, whereas the cell viability was significantly impaired. Overexpression of wild type CALR in TALH cells resulted in significant decrease in cell viability under hyperosmotic stress. In contrast, the hyperosmotic stress did not have any effect on cells overexpressing the CALR mutant, lacking the calcium-binding domain. Silencing CALR with siRNA significantly improved the cell survival under osmotic stress conditions. Taken together, our data clearly highlight the crucial role of CALR and its calcium-binding role in TALH adaptation and survival under osmotic stress.
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Al-Robaiy S, Dihazi H, Kacza J, Seeger J, Schiller J, Huster D, Knauer J, Straubinger RK. Metamorphosis of Borrelia burgdorferi organisms--RNA, lipid and protein composition in context with the spirochetes' shape. J Basic Microbiol 2011; 50 Suppl 1:S5-17. [PMID: 20967786 DOI: 10.1002/jobm.201000074] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Accepted: 06/21/2010] [Indexed: 11/12/2022]
Abstract
Borrelia burgdorferi, the agent of Lyme borreliosis, has the ability to undergo morphological transformation from a motile spirochetal to non-motile spherical shape when it encounters unfavorable conditions. However, little information is available on the mechanism that enables the bacterium to change its shape and whether major components of the cells--nucleic acids, proteins, lipids--are possibly modified during the process. Deducing from investigations utilizing electron microscopy, it seems that shape alteration begins with membrane budding followed by folding of the protoplasmatic cylinder inside the outer surface membrane. Scanning electron microscopy confirmed that a deficiency in producing functioning periplasmic flagella did not hinder sphere formation. Further, it was shown that the spirochetes' and spheres' lipid compositions were indistinguishable. Neither phosphatidylcholine nor phosphatidylglycerol were altered by the structural transformation. In addition, no changes in differential protein expression were detected during this process. However, minimal degradation of RNA and a reduced antigen-antibody binding activity were observed with advanced age of the spheres. The results of our comparisons and the failure to generate mutants lacking the ability to convert to spheres suggest that the metamorphosis of B. burgdorferi results in a conditional reconstruction of the outer membrane. The spheres, which appear to be more resistant to unfavorable conditions and exhibit reduced immune reactivity when compared to spirochetes, might allow the B. burgdorferi to escape complete clearance and possibly ensure long-term survival in the host.
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Affiliation(s)
- Samiya Al-Robaiy
- Institute of Immunology, College of Veterinary Medicine, and Center for Biotechnology and Biomedicine, University of Leipzig, Germany
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Eltoweissy M, Müller GA, Bibi A, Nguye PV, Dihazi GH, Müller CA, Dihazi H. Proteomics analysis identifies PARK7 as an important player for renal cell resistance and survival under oxidative stress. MOLECULAR BIOSYSTEMS 2011; 7:1277-88. [PMID: 21308111 DOI: 10.1039/c0mb00116c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Renal fibrosis is a process that is characterized by declining excretory renal function. The molecular mechanisms of fibrosis are not fully understood. Oxidative stress pathways were reported to be involved in renal tissue deterioration and fibrosis progression. In order to identify new molecular targets associated with oxidative stress and renal fibrosis, differential proteomics analysis was performed with established renal cell lines (TK173 and HK-2). The cells were treated with oxidative stress triggering factor H(2)O(2) and the proteome alterations were investigated. Two dimensional protein maps were generated and differentially expressed proteins were processed and identified using mass spectrometry analysis combined with data base search. Interestingly the increase of ROS in the renal cell lines upon H(2)O(2) treatment was accompanied by alteration of a large number of proteins, which could be classified in three categories: the first category grouped the proteins that have been described to be involved in fibrogenesis (e.g. ACTA2, VIN, VIM, DES, KRT, COL1A1, COL4A1), the second category, which was more interesting involved proteins of the oxidative stress pathway (PRDX1, PRDX2, PRDX6, SOD, PARK7, HYOU1), which were highly up-regulated under oxidative stress, and the third category represented proteins, which are involved in different other metabolic pathways. Among the oxidative stress proteins the up-regulation of PARK7 was accompanied by a shift in the pI as a result of oxidation. Knockdown of PARK7 using siRNA led to significant reduction in renal cell viability under oxidative stress. Under H(2)O(2) treatment the PARK7 knockdown cells showed up to 80% decrease in cell viability and an increase in apoptosis compared to the controls. These results highlight for the first time the important role of PARK7 in oxidative stress resistance in renal cells.
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Affiliation(s)
- Marwa Eltoweissy
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany.
- Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Gerhard A Müller
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany.
| | - Asima Bibi
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany.
| | - Phuc Van Nguye
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany.
| | - Gry H Dihazi
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany.
| | - Claudia A Müller
- Section for Transplantation-Immunology and Immunohematology, ZMF, University Tuebingen, Waldhoernle Str. 22 Germany
| | - Hassan Dihazi
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany.
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Pešić I, Dihazi GH, Müller GA, Jahn O, Hoffmann M, Eltoweissy M, Koziolek M, Dihazi H. Short-term increase of glucose concentration in PDS results in extensive removal and high glycation level of vital proteins during continuous ambulatory peritoneal dialysis. Nephrol Dial Transplant 2011; 26:2674-83. [DOI: 10.1093/ndt/gfq793] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Gabert BJ, Kültz D. Osmoprotective proteome adjustments in mouse kidney papilla. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2011; 1814:435-48. [PMID: 21236367 DOI: 10.1016/j.bbapap.2011.01.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 12/14/2010] [Accepted: 01/04/2011] [Indexed: 12/23/2022]
Abstract
The papilla of the mammalian kidney must tolerate greatly varying degrees of hyperosmotic stress during urine concentration and depending on whole organism hydration state. To identify proteome adaptations supporting cell function and survival in such a harsh environment we compared the proteome of a) the hyperosmotic renal papilla with that of adjacent iso-osmotic cortex tissue and b) the renal papilla of diuretic versus that of anti-diuretic mice. Though functionally distinct the papilla is in close physical proximity to the renal cortex, an iso-osmotic region. Proteomic differences between the papilla and cortex of C57BL6 mice were identified using two-dimensional gel electrophoresis and MALDI-TOF/TOF mass spectrometry. We found 37 different proteins characteristic of the cortex and 16 proteins over-represented in the papilla. Regional specificity was confirmed by Western blot and further substantiated by immunohistochemistry for selected proteins. Proteins that are characteristic of the renal papilla include αB crystallin, Hsp beta-1, Hsp90, 14-3-3 protein, glutathione S-transferase, aldose reductase, actin and tropomyosin. Gene ontology analysis confirmed a significant increase in molecular functions associated with protein chaperoning and cell stabilization. Proteins over-represented in the cortex were largely related to routine metabolism. During antidiuresis 15 different proteins changed significantly while 18 different proteins changed significantly during diuresis relative to normally hydrated controls. Changes were confirmed by Western blot for selected proteins. Proteins that are significantly altered by diuretic state are associated with cell structure (actin, tubulin), signaling (Rho GDP dissociation inhibitor, abhydrolase domain-containing protein 14B), chaperone functioning (Hsp beta-1, αB crystallin, T complex protein-1) and anti-oxidant functions (α-enolase, GAPDH and LDH). Taken together our study reveals that specific proteins involved in protein folding, cytoskeletal stabilization, antioxidant responses, and stress signaling contribute greatly to the unique hyperosmotic stress resistant phenotype of the kidney papilla.
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Affiliation(s)
- B J Gabert
- Department of Animal Science, University of Califonia, Davis, CA, USA
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Dihazi H, Dihazi GH, Mueller C, Lahrichi L, Asif AR, Bibi A, Eltoweissy M, Vasko R, Mueller GA. Proteomics characterization of cell model with renal fibrosis phenotype: osmotic stress as fibrosis triggering factor. J Proteomics 2010; 74:304-18. [PMID: 21118732 DOI: 10.1016/j.jprot.2010.11.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 10/15/2010] [Accepted: 11/10/2010] [Indexed: 11/29/2022]
Abstract
Renal fibroblasts are thought to play a major role in the development of renal fibrosis (RF). The mechanisms leading to this renal alteration remain poorly understood. We performed differential proteomic analyses with two established fibroblast cell lines with RF phenotype to identify new molecular pathways associated with RF. Differential 2-DE combined with mass spectrometry analysis revealed the alteration of more than 30 proteins in fibrotic kidney fibroblasts (TK188) compared to normal kidney fibroblast (TK173). Among these proteins, markers of the endoplasmic reticulum (ER) stress- and the unfolded protein response (UPR) pathway (GRP78, GRP94, ERP57, ERP72, and CALR) and the oxidative stress pathway proteins (PRDX1, PRDX2, PRDX6, HSP70, HYOU1) were highly up-regulated in fibrotic cells. Activation of these stress pathways through long time exposition of TK173, to high NaCl or glucose concentrations resulted in TK188 like phenotype. Parallel to an increase in reactive oxygen species, the stressed cells showed significant alteration of fibrosis markers, ER-stress and oxidative stress proteins. Similar effects of osmotic stress could be also observed on renal proximal tubule cells. Our data suggest an important role of the ER-stress proteins in fibrosis and highlights the pro-fibrotic effect of osmotic stress through activation of oxidative stress and ER-stress pathways.
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Affiliation(s)
- Hassan Dihazi
- Department of Nephrology and Rheumatology, Georg-August University Goettingen, Goettingen, Germany.
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Wang X, Chang L, Sun Z, Zhang Y, Yao L. Analysis of earthworm Eisenia fetida
proteomes during cadmium exposure: An ecotoxicoproteomics approach. Proteomics 2010; 10:4476-90. [DOI: 10.1002/pmic.201000209] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Rosas-Rodríguez JA, Valenzuela-Soto EM. Enzymes involved in osmolyte synthesis: how does oxidative stress affect osmoregulation in renal cells? Life Sci 2010; 87:515-20. [PMID: 20727361 DOI: 10.1016/j.lfs.2010.08.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 07/09/2010] [Accepted: 08/02/2010] [Indexed: 11/25/2022]
Abstract
Kidney medulla cells are exposed to a wide range of changes in the ionic and osmotic composition of their environment as a consequence of the urine concentrating mechanism. During antidiuresis NaCl and urea concentrations increase and an efficient urinary concentrating mechanism is accompanied by medullar hypoxia. Medullar hypotonicity increases reactive oxygen species, a byproduct of mitochondria during ATP production. High intracellular ionic strength, hypoxia and elevated ROS concentration would have deleterious effects on medulla cell function. Medulla cells respond to hypertonicity by accumulating organic osmolytes, such as glycine betaine, glycerophosphorylcholine, sorbitol, inositol, and taurine, the main functions of which are osmoregulation and osmoprotection. The accumulation of compatible osmolytes is thus crucial for the viability of renal medulla cells. Studies about the effects of reactive oxygen species (ROS) on the enzymes involved in the synthesis of osmolytes are scarce. In this review we summarize the information available on the effects of ROS on the enzymes involved in osmolyte synthesis in kidney.
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Affiliation(s)
- Jesús A Rosas-Rodríguez
- Centro de Investigación en Alimentación y Desarrollo A.C., Apartado Postal 1735, Hermosillo, Sonora, México
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Agarwal NK, Mueller GA, Mueller C, Streich JH, Asif AR, Dihazi H. Expression proteomics of acute promyelocytic leukaemia cells treated with methotrexate. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2010; 1804:918-28. [DOI: 10.1016/j.bbapap.2010.01.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2009] [Revised: 12/07/2009] [Accepted: 01/04/2010] [Indexed: 11/16/2022]
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Dihazi H, Dihazi GH, Nolte J, Meyer S, Jahn O, Müller GA, Engel W. Multipotent adult germline stem cells and embryonic stem cells: comparative proteomic approach. J Proteome Res 2010; 8:5497-510. [PMID: 19810753 DOI: 10.1021/pr900565b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Spermatogonial stem cells isolated from the adult mouse testis acquire under certain culture conditions pluripotency and become so-called multipotent adult germline stem cells (maGSCs). They can be differentiated into somatic cells of the three germ layers. We investigated a subset of the maGSCs and ESCs proteomes using cell lines derived from two different mouse strains, narrow range immobilized pH gradients to favor the detection of less abundant proteins, and DIGE to ensure confident comparison between the two cell types. 2-D reference maps of maGSCs and ESCs in the pI ranges 3-6 and 5-8 were created, and protein entities were further processed for protein identification. By peptide mass fingerprinting and tandem mass spectrometry combined with searches of protein sequence databases, a set of 409 proteins was identified, corresponding to a library of 166 nonredundant stem cell-associated proteins. The identified proteins were classified according to their main known/postulated functions using bioinformatics. Furthermore, we used DIGE to highlight the ESC-like nature of maGSCs on the proteome scale. We concluded that the proteome of maGSCs is highly similar to that of ESCs as we could identify only a small subset of 18 proteins to be differentially expressed between the two cell types. Moreover, comparative analysis of the cell line proteomes from two different mouse strains showed that the interindividual differences in maGSCs proteomes are minimal. With our study, we created for the first time a proteomic map for maGSCs and compared it to the ESCs proteome from the same mouse. We confirmed on the proteome level the ESC-like nature of maGSCs.
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Affiliation(s)
- Hassan Dihazi
- Department of Nephrology and Rheumatology, Georg-August University Goettingen, Robert-Koch-Strasse 40, D-37075 Goettingen, Germany.
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Schott P, Jacobshagen C, Köhler J, Seidler T, Asif AR, Dihazi H, Hasenfuss G, Maier LS. Proteome changes in CaMKIIδC-overexpressing cardiac myocytes. Cardiovasc Pathol 2010; 19:e241-50. [PMID: 20093047 DOI: 10.1016/j.carpath.2009.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Revised: 10/19/2009] [Accepted: 11/25/2009] [Indexed: 11/29/2022] Open
Abstract
Recent studies have demonstrated that the expression as well as the activity of Ca/calmodulin-dependent protein kinase IIδ(C) (CaMKIIδ(C)) is increased in heart failure. Transgenic overexpression of CaMKIIδ(C) in mouse hearts results in severe dilated cardiomyopathy. So far, little is known about CaMKIIδ(C)-induced changes in gene expression and proteome alteration. We hypothesize that proteome changes similar to those found in advanced heart failure can be assessed even after short term overexpression of CaMKIIδ(C) in an in vitro culture model. Thus, we designed a study using a proteomic approach combined with adenovirus-mediated gene transfer of CaMKIIδ(C) to identify early CaMKIIδ(C)-induced changes in cardiac myocyte phenotype on proteome level. CaMKIIδ(C) was overexpressed by adenovirus-mediated gene transfer in isolated cardiac myocytes of adult rabbits for 48 h. Proteome changes were analyzed by two-dimensional gel electrophoresis and mass spectrometry (MS). Overexpression of CaMKIIδ(C) resulted in a decreased expression of 21 proteins (at least twofold change of expression, P<.05, n=10). Using in-gel digest and MS, we identified 13 out of these 21 proteins. CaMKIIδ(C) overexpression leads to a reduced abundance of NADH dehydrogenase, lactate dehydrogenase, pyruvate kinase, dihydrolipoamide succinyltransferase, creatine kinase M, heat shock protein 70, elongation factor Tu, and superoxide dismutase. The profile of the proteome changes induced by CaMKIIδ(C) overexpression after 48 h displayed striking alterations of metabolic proteins, cell-protecting proteins including antioxidants, and proteins involved in protein synthesis. Interestingly, the observed proteome changes are in common with the phenotype of failing cardiac myocytes on the protein level. These altered proteins may act individually as contributors to heart failure, which is observed after overexpression of CaMKIIδ(C) in genetically altered mice.
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Affiliation(s)
- Peter Schott
- Department of Cardiology and Pneumology, Heart Center, Georg-August-University, Göttingen, Germany
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Proteomic analysis of early-response to mechanical stress in neonatal rat mandibular condylar chondrocytes. J Cell Physiol 2010; 223:610-22. [DOI: 10.1002/jcp.22052] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Smith MPW, Banks RE, Wood SL, Lewington AJP, Selby PJ. Application of proteomic analysis to the study of renal diseases. Nat Rev Nephrol 2009; 5:701-12. [DOI: 10.1038/nrneph.2009.183] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Thongboonkerd V. Current status of renal and urinary proteomics: ready for routine clinical application? Nephrol Dial Transplant 2009; 25:11-6. [PMID: 19759274 DOI: 10.1093/ndt/gfp476] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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Asif AR, Oellerich M, Armstrong VW, Hecker M, Cattaruzza M. T-786C polymorphism of the NOS-3 gene and the endothelial cell response to fluid shear stress-a proteome analysis. J Proteome Res 2009; 8:3161-8. [PMID: 19320461 DOI: 10.1021/pr800998k] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Endothelial dysfunction is a common denominator of cardiovascular disease. Central to endothelial dysfunction is a decrease in the bioavailability of nitric oxide (NO) synthesized by endothelial NO synthase (NOS-3). In vivo, the level of fluid shear stress (FSS) exerted by the flowing blood determines NOS-3 expression. However, in contrast to the -786T variant of the nos-3 gene, the -786C variant is not sensitive to shear stress. Consequently, cells homozygous for this variant have an inadequate capacity to synthesize NO. Therefore, we have compared shear stress-induced protein expression in human primary cultured endothelial cells with TT or CC genotype. Cells with the CC genotype exhibited a greatly reduced FSS-induced NOS-3 expression as well as a diminished NO synthesis capacity when compared to TT genotype cells. Proteome changes in response to FSS (30 dyn/cm(2) for 24 h) were monitored by 2D-gel electrophoresis/densitometry/mass spectrometry. Of a total of 14 FSS-sensitive proteins, 8 were identically expressed in all cells. Four proteins, all of them part of the NO-dependent endoplasmic reticulum-stress response, were up-regulated by FSS only in cells with TT genotype. In contrast, CC genotype cells responded to FSS with a unique increase in manganese-containing superoxide dismutase expression. These differences in protein expression may (i) reflect the low bioavailability of NO in cells homozygous for the -786C variant of the nos-3 gene and (ii) point to a mechanism by which this deficit is counterbalanced by protecting the less abundant NO from rapid degradation.
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Affiliation(s)
- Abdul R Asif
- Department of Clinical Chemistry, University Hospital Gottingen, Robert-Koch-Strausse 40, 37075 Gottingen, Germany
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Li A, Benoit JB, Lopez-Martinez G, Elnitsky MA, Lee RE, Denlinger DL. Distinct contractile and cytoskeletal protein patterns in the Antarctic midge are elicited by desiccation and rehydration. Proteomics 2009; 9:2788-98. [DOI: 10.1002/pmic.200800850] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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