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Miotto DS, Dionizio A, Jacomini AM, Zago AS, Buzalaf MAR, Amaral SL. Identification of Aortic Proteins Involved in Arterial Stiffness in Spontaneously Hypertensive Rats Treated With Perindopril:A Proteomic Approach. Front Physiol 2021; 12:624515. [PMID: 33679438 PMCID: PMC7928294 DOI: 10.3389/fphys.2021.624515] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 01/05/2021] [Indexed: 11/13/2022] Open
Abstract
Arterial stiffness, frequently associated with hypertension, is associated with disorganization of the vascular wall and has been recognized as an independent predictor of all-cause mortality. The identification of the molecular mechanisms involved in aortic stiffness would be an emerging target for hypertension therapeutic intervention. This study evaluated the effects of perindopril on pulse wave velocity (PWV) and on the differentially expressed proteins in aorta of spontaneously hypertensive rats (SHR), using a proteomic approach. SHR and Wistar rats were treated with perindopril (SHRP) or water (SHRc and Wistar rats) for 8 weeks. At the end, SHRC presented higher systolic blood pressure (SBP, +70%) and PWV (+31%) compared with Wistar rats. SHRP had higher values of nitrite concentration and lower PWV compared with SHRC. From 21 upregulated proteins in the aortic wall from SHRC, most of them were involved with the actin cytoskeleton organization, like Tropomyosin and Cofilin-1. After perindopril treatment, there was an upregulation of the GDP dissociation inhibitors (GDIs), which normally inhibits the RhoA/Rho-kinase/cofilin-1 pathway and may contribute to decreased arterial stiffening. In conclusion, the results of the present study revealed that treatment with perindopril reduced SBP and PWV in SHR. In addition, the proteomic analysis in aorta suggested, for the first time, that the RhoA/Rho-kinase/Cofilin-1 pathway may be inhibited by perindopril-induced upregulation of GDIs or increases in NO bioavailability in SHR. Therefore, we may propose that activation of GDIs or inhibition of RhoA/Rho-kinase pathway could be a possible strategy to treat arterial stiffness.
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Affiliation(s)
- Danyelle S Miotto
- Joint Graduate Program in Physiological Sciences, Federal University of Sao Carlos and São Paulo State University, UFSCar/UNESP, São Carlos, Brazil
| | - Aline Dionizio
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - André M Jacomini
- Post-Graduate Program in Movement Sciences, São Paulo State University, Bauru, Brazil
| | - Anderson S Zago
- Post-Graduate Program in Movement Sciences, São Paulo State University, Bauru, Brazil.,Department of Physical Education, School of Sciences, São Paulo State University, Bauru, Brazil
| | | | - Sandra L Amaral
- Joint Graduate Program in Physiological Sciences, Federal University of Sao Carlos and São Paulo State University, UFSCar/UNESP, São Carlos, Brazil.,Department of Physical Education, School of Sciences, São Paulo State University, Bauru, Brazil
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Wang ZY, Cheng J, Liu B, Xie F, Li CL, Qiao W, Lu QH, Wang Y, Zhang MX. Protein deglycase DJ-1 deficiency induces phenotypic switching in vascular smooth muscle cells and exacerbates atherosclerotic plaque instability. J Cell Mol Med 2021; 25:2816-2827. [PMID: 33501750 PMCID: PMC7957272 DOI: 10.1111/jcmm.16311] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 12/14/2020] [Accepted: 01/12/2021] [Indexed: 12/25/2022] Open
Abstract
Protein deglycase DJ‐1 (DJ‐1) is a multifunctional protein involved in various biological processes. However, it is unclear whether DJ‐1 influences atherosclerosis development and plaque stability. Accordingly, we evaluated the influence of DJ‐1 deletion on the progression of atherosclerosis and elucidate the underlying mechanisms. We examine the expression of DJ‐1 in atherosclerotic plaques of human and mouse models which showed that DJ‐1 expression was significantly decreased in human plaques compared with that in healthy vessels. Consistent with this, the DJ‐1 levels were persistently reduced in atherosclerotic lesions of ApoE−/− mice with the increasing time fed by western diet. Furthermore, exposure of vascular smooth muscle cells (VSMCs) to oxidized low‐density lipoprotein down‐regulated DJ‐1 in vitro. The canonical markers of plaque stability and VSMC phenotypes were evaluated in vivo and in vitro. DJ‐1 deficiency in Apoe−/− mice promoted the progression of atherosclerosis and exaggerated plaque instability. Moreover, isolated VSMCs from Apoe−/−DJ‐1−/− mice showed lower expression of contractile markers (α‐smooth muscle actin and calponin) and higher expression of synthetic indicators (osteopontin, vimentin and tropoelastin) and Kruppel‐like factor 4 (KLF4) by comparison with Apoe−/−DJ‐1+/+ mice. Furthermore, genetic inhibition of KLF4 counteracted the adverse effects of DJ‐1 deletion. Therefore, our results showed that DJ‐1 deletion caused phenotype switching of VSMCs and exacerbated atherosclerotic plaque instability in a KLF4‐dependent manner.
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Affiliation(s)
- Zhao-Yang Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Jie Cheng
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Bin Liu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Fei Xie
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Chang-Ling Li
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Wen Qiao
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Qing-Hua Lu
- Department of Cardiology, The Second Hospital of Shandong University, Jinan, China
| | - Ying Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Ming-Xiang Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
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Pignataro M, Di Rocco G, Lancellotti L, Bernini F, Subramanian K, Castellini E, Bortolotti CA, Malferrari D, Moro D, Valdrè G, Borsari M, Del Monte F. Phosphorylated cofilin-2 is more prone to oxidative modifications on Cys39 and favors amyloid fibril formation. Redox Biol 2020; 37:101691. [PMID: 32863228 PMCID: PMC7472925 DOI: 10.1016/j.redox.2020.101691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 08/06/2020] [Accepted: 08/17/2020] [Indexed: 02/01/2023] Open
Abstract
Cofilins are small protein of the actin depolymerizing family. Actin polymerization/depolymerization is central to a number of critical cellular physiological tasks making cofilin a key protein for several physiological functions of the cell. Cofilin activity is mainly regulated by phosphorylation on serine residue 3 making this post-translational modification key to the regulation of myofilament integrity. In fact, in this form, the protein segregates in myocardial aggregates in human idiopathic dilated cardiomyopathy. Since myofilament network is an early target of oxidative stress we investigated the molecular changes induced by oxidation on cofilin isoforms and their interplay with the protein phosphorylation state to get insight on whether/how those changes may predispose to early protein aggregation. Using different and complementary approaches we characterized the aggregation properties of cofilin-2 and its phosphomimetic variant (S3D) in response to oxidative stress in silico, in vitro and on isolated cardiomyocytes. We found that the phosphorylated (inactive) form of cofilin-2 is mechanistically linked to the formation of an extended network of fibrillar structures induced by oxidative stress via the formation of a disulfide bond between Cys39 and Cys80. Such phosphorylation-dependent effect is likely controlled by changes in the hydrogen bonding network involving Cys39. We found that the sulfide ion inhibits the formation of such structures. This might represent the mechanism for the protective effect of the therapeutic agent Na2S on ischemic injury.
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Affiliation(s)
- Marcello Pignataro
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, USA
| | - Giulia Di Rocco
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Lidia Lancellotti
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Fabrizio Bernini
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Elena Castellini
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Daniele Malferrari
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Daniele Moro
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Giovanni Valdrè
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Marco Borsari
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Modena, Italy.
| | - Federica Del Monte
- Gazes Cardiac Research Institute, Medical University of South Carolina, Charleston, USA; Department of Experimental, Diagnostic and Specialty Medicine (DIMES), School of Medicine, University of Bologna, Bologna, Italy.
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Yamawaki H. A Novel Regulatory Mechanism for Differentiation of Mesenchymal Stem Cell: Redox State of DJ-1 Matters. Proteomics 2018; 18. [PMID: 29194978 DOI: 10.1002/pmic.201700345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Indexed: 11/06/2022]
Abstract
Reactive oxygen species (ROS) are multifunctional gas transmitters with diverse biological actions (adverse vs beneficial) dependent on their level. The differentiation of vascular stem cells into smooth muscle cells (SMCs) might be involved in the pathogenesis of cardiovascular disorders including hypertension and atherosclerosis. Therefore, controlling the differentiation of vascular stem cells is a potential strategy for the treatment of vascular diseases. Nonetheless, it remains to be revealed whether ROS could mediate the differentiation of mesenchymal stem cells (MSCs) into SMCs. In addition, there are no redox (reduction-oxidation)-sensitive molecules identified, which are responsible for the ROS-induced differentiation of MSCs. In article number 1700208, Baek et al. [Proteomics 2017, 17, Issue 21] found that ROS mediate the differentiation of MSCs into SMCs through the modification of redox states of a multifunctional ROS-responsive protein, DJ-1, revealing a novel regulatory mechanism for differentiation of MSCs into SMCs and shedding light into the future development of stem-cell-targeted pharmacotherapy.
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Affiliation(s)
- Hideyuki Yamawaki
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Towada City, Aomori, Japan
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5
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Baek S, Lee KP, Jung SH, Cui L, Ko K, Kim B, Won KJ. DJ-1 Regulates Differentiation of Human Mesenchymal Stem Cells into Smooth Muscle-like Cells in Response to Sphingosylphosphorylcholine. Proteomics 2018; 17. [PMID: 28949093 DOI: 10.1002/pmic.201700208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 09/12/2017] [Indexed: 11/06/2022]
Abstract
Although multiple factors contribute to the differentiation of human mesenchymal stem cells (hMSCs) into various types of cells, the differentiation of hMSCs into smooth muscle cells (SMCs), one of central events in vascular remodeling, remains to be clarified. ROS participate in the differentiation of hMSCs into several cell types and were regulated by redox-sensitive molecules including a multifunctional protein DJ-1. Here, we investigated the correlation between altered proteins, especially those related to ROS, and SMC differentiation in sphingosylphosphorylcholine (SPC)-stimulated hMSCs. Treatment with SPC resulted in an increased expression of SMC markers, namely α-smooth muscle actin (SMA) and calponin, and an increased production of ROS in hMSCs. A proteomic analysis of SPC-stimulated hMSCs revealed a distinctive alteration of the ratio between the oxidized and reduced forms of DJ-1 in hMSCs in response to SPC. The increased abundance of oxidized DJ-1 in SPC-stimulated hMSCs was validated by immunoblot analysis. The SPC-induced increase in the expression of α-SMA was stronger in DJ-1-knockdown hMSCs than in control cells. Moreover, the expression of α-SMA, and the calponin and generation of ROS in response to SPC were weaker in normal hMSCs than in DJ-1-overexpressing hMSCs. Exogenous H2 O2 mimicked the responses induced by SPC treatment. These results indicate that the ROS-related DJ-1 pathway regulates the differentiation of hMSCs into SMCs in response to SPC.
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Affiliation(s)
- Suji Baek
- Departments of Physiology, School of Medicine, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - Kang Pa Lee
- Departments of Physiology, School of Medicine, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - Seung Hyo Jung
- Departments of Physiology, School of Medicine, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - Long Cui
- Departments of Physiology, School of Medicine, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - Kinarm Ko
- Stem Cell Biology, School of Medicine, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - Bokyung Kim
- Departments of Physiology, School of Medicine, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - Kyung Jong Won
- Departments of Physiology, School of Medicine, Konkuk University, Gwangjin-gu, Seoul, Korea
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Luo J, Li D, Wei D, Wang X, Wang L, Zeng X. RhoA and RhoC are involved in stromal cell-derived factor-1-induced cell migration by regulating F-actin redistribution and assembly. Mol Cell Biochem 2017; 436:13-21. [PMID: 28536953 DOI: 10.1007/s11010-017-3072-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 05/16/2017] [Indexed: 12/18/2022]
Abstract
Stromal cell-derived factor-1 (SDF-1) signaling is important to the maintenance and progression of T-cell acute lymphoblastic leukemia by inducing chemotaxis migration. To identify the mechanism of SDF-1 signaling in the migration of T-ALL, Jurkat acute lymphoblastic leukemia cells were used. Results showed that SDF-1 induces Jurkat cell migration by F-actin redistribution and assembly, which is dependent on Rho activity. SDF-1 induced RhoA and RhoC activation, as well as reactive oxygen species (ROS) production, which was inhibited by Rho inhibitor. The Rho-dependent ROS production led to subsequent cytoskeleton redistribution and assembly in the process of migration. Additionally, RhoA and RhoC were involved in SDF-1-induced Jurkat cell migration. Taken together, we found a SDF-1/CXCR4-RhoA and RhoC-ROS-cytoskeleton pathway that regulates Jurkat cell migration in response to SDF-1. This work will contribute to a clearer insight into the migration mechanism of acute lymphoblastic leukemia.
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Affiliation(s)
- Jixian Luo
- School of Life Science, Shanxi University, 92 Wucheng Road, Taiyuan, China.
| | - Dingyun Li
- School of Life Science, Shanxi University, 92 Wucheng Road, Taiyuan, China
| | - Dan Wei
- School of Life Science, Shanxi University, 92 Wucheng Road, Taiyuan, China
| | - Xiaoguang Wang
- Department of Bioscience, Changchun Normal University, 677 Changji Northroad, Changchun, 130032, China
| | - Lan Wang
- School of Life Science, Shanxi University, 92 Wucheng Road, Taiyuan, China.
| | - Xianlu Zeng
- Institute of Genetics and Cytology, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, China.
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7
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Kim J, Won KJ, Jung SH, Lee KP, Shim SB, Kim MY, Kim JH, Lee JU, Kim B. DJ-1 protects against undernutrition-induced atrophy through inhibition of the MAPK-ubiquitin ligase pathway in myoblasts. Life Sci 2015; 143:50-7. [PMID: 26408915 DOI: 10.1016/j.lfs.2015.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 08/01/2015] [Accepted: 09/21/2015] [Indexed: 01/09/2023]
Abstract
AIMS The purpose of this study is to explore whether antioxidant DJ-1 protein affects the atrophy of skeletal muscle cell induced by undernutrition. MAIN METHODS To determine cell atrophic responses, L6 cell line and skeletal primary cells from mouse hind limbs were cultivated under condition of FBS-free and low glucose. Changes of protein expression were analyzed using Western blot. Overexpression and knockdown of DJ-1 was performed in cells to assess its influence on cell atrophic responses. KEY FINDINGS Undernutrition decreased cell size and increased the abundance of oxidized form and total form of DJ-1 protein in L6 myoblasts. The undernourished cells revealed an elevation in the expression of muscle-specific RING finger-1 (MuRF-1) and atrogin-1, and in the phosphorylations of p38 mitogen-activated protein kinase (MAPK) and stress-activated protein kinase/c-Jun N-terminal kinase compared with control groups. Moreover, DJ-1-knockout mice showed a decrease in cell size and an enhancement in the expression of MuRF-1 and atrogin-1, as well as in the phosphorylation of MAPKs in gastrocnemius muscles; these changes were also observed in L6 cells transfected with siRNA of DJ-1. On the other hand, L6 cells overexpressing full-length DJ-1 did not exhibit the alterations in cell size and ubiquitin ligases seen after undernourished states of control cells. Myotubes differentiated from L6 cells also showed elevated expression of MuRF-1 and atrogin-1 in response to undernutrition. SIGNIFICANCE These results suggest that DJ-1 protein may contribute to undernutrition-induced atrophy via MAPKs/ubiquitin ligase pathway in skeletal muscle cells.
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Jung S, Won K, Lee K, Kim H, Seo E, Lee H, Park E, Lee S, Kim B. The serum protein fetuin-B is involved in the development of acute myocardial infarction. Clin Sci (Lond) 2015; 129:27-38. [DOI: 10.1042/cs20140462] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Fetuin-B was one of highly expressed serum proteins in AMI compared with stable angina. This protein affected vascular plaque-stabilizing components in monocytes, macrophages and vascular smooth muscle cells. Fetuin-B may be a possible contributor to AMI.
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Kim MY, Lee JU, Kim JH, Lee LK, Yang SM, Park BS, Jeon HJ, Lee WD, Noh JW, Kwak TY, Jang SH, Lee TH, Kim JY, Kim B, Kim J. Decrease of PKB/Akt Phosphorylation is Partially Mediated by SAPK/JNK Activation in Serum-free L6 Myoblasts Starved with Low Glucose. J Phys Ther Sci 2014; 26:1757-60. [PMID: 25435694 PMCID: PMC4242949 DOI: 10.1589/jpts.26.1757] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 05/16/2014] [Indexed: 11/24/2022] Open
Abstract
[Purpose] Studies have been using cell cultures of muscle cells to mimic atrophy in
in vivo and in vitro tests. However, changes in the
activation of atrophy-related PKB/Akt is not fully understood in serum-free starved
skeletal muscle cells. The purpose of the present study was to determine the change of
PKB/Akt phosphorylation in L6 myoblasts under serum-free starvation conditions. [Methods]
We used western blotting to examine PKB/Akt expression and phosphorylation in atrophied L6
myoblasts. [Results] The phosphorylation of PKB/Akt was significantly lower in L6
myoblasts under serum-free starvation than that of the control group. Serum-free
starvation for 6, 12, 24, 36, 48, 72, 96, and 120 hours significantly decreased the
phosphorylation of PKB/Akt. Furthermore, the decrease of PKB/Akt phosphorylation under
serum-free starvation was partially restored by SP600125, an inhibitor of SAPK/JNK.
[Conclusion] These results suggest that decrease of PKB/Akt phosphorylation due to
serum-free starvation with low glucose is partially related to the activity of SAPK/JNK in
L6 myoblasts.
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Affiliation(s)
- Mee-Young Kim
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea ; Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Jeong-Uk Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Ju-Hyun Kim
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Lim-Kyu Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Seung-Min Yang
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Byoung-Sun Park
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Hye-Joo Jeon
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Won-Deok Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Ji-Woong Noh
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Taek-Yong Kwak
- Department of Taekwondo Instructor Education, College of Martial Arts, Yongin University, Republic of Korea
| | - Sung-Ho Jang
- Department of Judo, College of Martial Arts, Yongin University, Republic of Korea
| | - Tae-Hyun Lee
- Combative Martial Arts Training, College of Martial Arts, Yongin University, Republic of Korea
| | - Ju-Young Kim
- Combative Martial Arts Training, College of Martial Arts, Yongin University, Republic of Korea
| | - Bokyung Kim
- Institute of Functional Genomics, Department of Physiology, School of Medicine, Konkuk University, Republic of Korea
| | - Junghwan Kim
- Department of Physical Therapy, College of Public Health and Welfare, Yongin University: Yongin 449-714, Republic of Korea
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Gellert M, Hanschmann EM, Lepka K, Berndt C, Lillig CH. Redox regulation of cytoskeletal dynamics during differentiation and de-differentiation. Biochim Biophys Acta Gen Subj 2014; 1850:1575-87. [PMID: 25450486 DOI: 10.1016/j.bbagen.2014.10.030] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 10/24/2014] [Accepted: 10/27/2014] [Indexed: 01/03/2023]
Abstract
BACKGROUND The cytoskeleton, unlike the bony vertebrate skeleton or the exoskeleton of invertebrates, is a highly dynamic meshwork of protein filaments that spans through the cytosol of eukaryotic cells. Especially actin filaments and microtubuli do not only provide structure and points of attachments, but they also shape cells, they are the basis for intracellular transport and distribution, all types of cell movement, and--through specific junctions and points of adhesion--join cells together to form tissues, organs, and organisms. SCOPE OF REVIEW The fine tuned regulation of cytoskeletal dynamics is thus indispensible for cell differentiation and all developmental processes. Here, we discussed redox signalling mechanisms that control this dynamic remodeling. Foremost, we emphasised recent discoveries that demonstrated reversible thiol and methionyl switches in the regulation of actin dynamics. MAJOR CONCLUSIONS Thiol and methionyl switches play an essential role in the regulation of cytoskeletal dynamics. GENERAL SIGNIFICANCE The dynamic remodeling of the cytoskeleton is controlled by various redox switches. These mechanisms are indispensible during development and organogenesis and might contribute to numerous pathological conditions. This article is part of a Special Issue entitled Redox regulation of differentiation and de-differentiation.
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Affiliation(s)
- Manuela Gellert
- Institut für Biochemie und Molekularbiologie, Universitätsmedizin Greifswald, Ernst-Moritz-Arndt-Universität, Greifswald, Germany
| | - Eva-Maria Hanschmann
- Institut für Biochemie und Molekularbiologie, Universitätsmedizin Greifswald, Ernst-Moritz-Arndt-Universität, Greifswald, Germany
| | - Klaudia Lepka
- Klinik für Neurologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Carsten Berndt
- Klinik für Neurologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Christopher Horst Lillig
- Institut für Biochemie und Molekularbiologie, Universitätsmedizin Greifswald, Ernst-Moritz-Arndt-Universität, Greifswald, Germany.
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Wong SW, Sun S, Cho M, Lee KKH, Mak AFT. H2O2 Exposure Affects Myotube Stiffness and Actin Filament Polymerization. Ann Biomed Eng 2014; 43:1178-88. [PMID: 25371376 DOI: 10.1007/s10439-014-1178-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 10/29/2014] [Indexed: 01/24/2023]
Abstract
Skeletal muscles often experience oxidative stress in anaerobic metabolism and ischemia-reperfusion. This paper reports how oxidative stress affects the stiffness of cultured murine myotubes and their actin filaments polymerization dynamics. H2O2 was applied as an extrinsic oxidant to C2C12 myotubes. Atomic force microscopy results showed that short exposures to H2O2 apparently increased the stiffness of myotubes, but that long exposures made the cells softer. The turning point seemed to take place somewhere between 1 and 2 h of H2O2 exposure. We found that the stiffness change was probably due to actin filaments being favored for depolymerization after prolong H2O2 treatments, especially when the exposure duration exceeded 1 h and the exposure concentration reached 1.0 mM. Such depolymerization effect was associated with the down-regulation of thymosin beta 4, as well as the up-regulation of both cofilin2 and profilin1 after prolong H2O2 treatments.
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Affiliation(s)
- Sing Wan Wong
- Division of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong
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Kim MY, Kim JH, Lee JU, Lee LK, Yang SM, Park BS, Jeon HJ, Lee WD, Noh JW, Kwak TY, Jang SH, Lee TH, Kim JY, Kim TW, Kim B, Kim J. Cofilin Phosphorylation Decreased by Serum-free Starvation with Low Glucose in the L6 Myoblasts. J Phys Ther Sci 2014; 26:1543-5. [PMID: 25364107 PMCID: PMC4210392 DOI: 10.1589/jpts.26.1543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 04/10/2014] [Indexed: 01/08/2023] Open
Abstract
[Purpose] Many studies have been using cell culture models of muscle cells with exogenous cytokines or glucocorticoids to mimic atrophy in in vivo and in vitro tests. However, the changes in the phosphorylation of atrophy-related cofilin are still poorly understood in starved skeletal muscle cells. In this study, we first examined whether or not phosphorylation of cofilin is altered in L6 myoblasts after 3, 6, 12, 24, 48, and 72 hours of serum-free starvation with low glucose. [Methods] We used Western blotting to exam protein expression and phosphorylation in atrophied L6 myoblasts. [Results] L6 cell sizes and numbers were diminished as a result of serum-free starvation in a time-dependent manner. Serum-free starvation for 3, 6, 12, 24, 48, and 72 hours significantly decreased the phosphorylation of cofilin, respectively. [Conclusion] These results suggest that starvation-induced atrophy may be in part related to changes in the phosphorylation of cofilin in L6 myoblasts.
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Affiliation(s)
- Mee-Young Kim
- Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea ; Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea
| | - Ju-Hyun Kim
- Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea
| | - Jeong-Uk Lee
- Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea
| | - Lim-Kyu Lee
- Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea
| | - Seung-Min Yang
- Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea
| | - Byoung-Sun Park
- Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea
| | - Hye-Joo Jeon
- Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea
| | - Won-Deok Lee
- Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea
| | - Ji-Woong Noh
- Department of Physical Therapy, Laboratory of Health Science and Nanophysiotherapy, Yongin University, Republic of Korea
| | - Taek-Yong Kwak
- Department of Taekwondo Instructor Education, College of Martial Arts, Yongin University, Republic of Korea
| | - Sung-Ho Jang
- Department of Judo, College of Martial Arts, Yongin University, Republic of Korea
| | - Tae-Hyun Lee
- Combative Martial Arts Training, College of Martial Arts, Yongin University, Republic of Korea
| | - Ju-Young Kim
- Combative Martial Arts Training, College of Martial Arts, Yongin University, Republic of Korea
| | - Tae-Whan Kim
- Department of Sports Science and Engineering, Korea Institute of Sport Science, Republic of Korea
| | - Bokyung Kim
- Department of Physiology, School of Medicine, Institute of Functional Genomics, Konkuk University, Republic of Korea
| | - Junghwan Kim
- Department of Physical Therapy, College of Public Health and Welfare, Yongin University, Republic of Korea
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Kaur M, Kachlany SC. Aggregatibacter actinomycetemcomitans leukotoxin (LtxA; Leukothera) induces cofilin dephosphorylation and actin depolymerization during killing of malignant monocytes. Microbiology (Reading) 2014; 160:2443-2452. [PMID: 25169107 DOI: 10.1099/mic.0.082347-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Leukotoxin (LtxA; Leukothera), a protein toxin secreted by the oral bacterium Aggregatibacter actinomycetemcomitans, specifically kills white blood cells (WBCs). LtxA binds to the receptor known as lymphocyte function associated antigen-1 (LFA-1), a β2 integrin expressed only on the surface of WBCs. LtxA is being studied as a virulence factor that helps A. actinomycetemcomitans evade host defences and as a potential therapeutic agent for the treatment of WBC diseases. LtxA-mediated cell death in monocytes involves both caspases and lysosomes; however, the signalling proteins that regulate and mediate cell death remain largely unknown. We used a 2D-gel proteomics approach to analyse the global protein expression changes that occur in response to LtxA. This approach identified the protein cofilin, which underwent dephosphorylation upon LtxA treatment. Cofilin is a ubiquitous actin-binding protein known to regulate actin dynamics and is regulated by LIM kinase (LIMK)-mediated phosphorylation. LtxA-mediated cofilin dephosphorylation was dependent on LFA-1 and cofilin dephosphorylation did not occur when LFA-1 bound to its natural ligand, ICAM-1. Treatment of cells with an inhibitor of LIMK (LIMKi) also led to cofilin dephosphorylation and enhanced killing by LtxA. This enhanced sensitivity to LtxA coincided with an increase in lysosomal disruption, and an increase in LFA-1 surface expression and clustering. Both LIMKi and LtxA treatment also induced actin depolymerization, which could play a role in trafficking and surface distribution of LFA-1. We propose a model in which LtxA-mediated cofilin dephosphorylation leads to actin depolymerization, LFA-1 overexpression/clustering, and enhanced lysosomal-mediated cell death.
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Affiliation(s)
- Manpreet Kaur
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Scott C Kachlany
- Actinobac Biomed Inc., New Brunswick, NJ, USA.,Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, USA
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Jung SH, Won KJ, Lee KP, Lee DH, Yu S, Lee DY, Seo EH, Kang H, Park ES, Kim HJ, Lee SH, Kim B. DJ-1 protein regulates CD3+ T cell migration via overexpression of CXCR4 receptor. Atherosclerosis 2014; 235:503-9. [PMID: 24953490 DOI: 10.1016/j.atherosclerosis.2014.05.955] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 04/30/2014] [Accepted: 05/27/2014] [Indexed: 01/22/2023]
Abstract
OBJECTIVE DJ-1-a multifunctional protein responding to oxidative stress-is a possible regulator of the inflammatory response that plays an important role in atherosclerosis. Stromal cell-derived factor (SDF)-1 and its receptor, chemokine receptor type 4 (CXCR4), have been implicated in the recruitment of inflammatory cells during atherosclerosis. Here we investigated the hypothesis that DJ-1 protein might participate in CD3+ T cell functions in response to SDF-1 and contribute to the pathogenesis of atherosclerosis. METHODS AND RESULTS SDF-1 stimulated migration in mouse CD3+ T cells in a dose-dependent manner. SDF-1 also elevated the phosphorylation level of extracellular-regulated kinase (ERK) 1/2 in CD3+ T cells. These SDF-1-induced responses were greater in CD3+ T cells from DJ-1 gene knockout (DJ-1(-/-)) mice than in those from wild type (DJ-1(+/+)) mice and were abolished by treatment with WZ811 and PD98059, inhibitors of CXCR4 and ERK1/2, respectively. Flow cytometry revealed that expression of the CXCR4 receptor was greater in CD3+ T cells from DJ-1(-/-) mice than in those from the controls. Moreover, expression of the CD3 protein was observed in the neointimal plaque from carotid artery-ligated mice and was stronger in DJ-1(-/-) mice compared with controls. The CD3+ T cell subsets, Th1 and Th17, showed increased production of interferon-γ and interleukin-17 in DJ-1(-/-) compared with DJ-1(+/+) mice. CONCLUSION DJ-1 protein is involved in the SDF-1-induced CD3+ T cell migration via overexpression of the CXCR4 receptor, and that DJ-1 acts as an inhibitory regulator in vascular remodeling such as neointima formation.
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Stanley A, Thompson K, Hynes A, Brakebusch C, Quondamatteo F. NADPH oxidase complex-derived reactive oxygen species, the actin cytoskeleton, and Rho GTPases in cell migration. Antioxid Redox Signal 2014; 20:2026-42. [PMID: 24251358 DOI: 10.1089/ars.2013.5713] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
SIGNIFICANCE Rho GTPases are historically known to be central regulators of actin cytoskeleton reorganization. This affects many processes including cell migration. In addition, members of the Rac subfamily are known to be involved in reactive oxygen species (ROS) production through the regulation of NADPH oxidase (Nox) activity. This review focuses on relationships between Nox-regulated ROS, Rho GTPases, and cytoskeletal reorganization, in the context of cell migration. RECENT ADVANCES It has become clear that ROS participate in the regulation of certain Rho GTPase family members, thus mediating cytoskeletal reorganization. CRITICAL ISSUES The role of the actin cytoskeleton in providing a scaffold for components of the Nox complex needs to be examined in the light of these new advances. During cell migration, Rho GTPases, ROS, and cytoskeletal organization appear to function as a complex regulatory network. However, more work is needed to fully elucidate the interactions between these factors and their potential in vivo importance. FUTURE DIRECTIONS Ultrastructural analysis, that is, electron microscopy, particularly immunogold labeling, will enable direct visualization of subcellular compartments. This in conjunction with the analysis of tissues lacking specific Rho GTPases, and Nox components will facilitate a detailed examination of the interactions of these structures with the actin cytoskeleton. In combination with the analysis of ROS production, including its subcellular location, these data will contribute significantly to our understanding of this intricate network under physiological conditions. Based on this, in vivo and in vitro studies can then be combined to elucidate the signaling pathways involved and their targets.
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Affiliation(s)
- Alanna Stanley
- 1 Skin and Extracellular Matrix Research Group , Anatomy, NUI Galway, Galway, Ireland
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Kim MY, Kim JH, Lee JU, Lee LK, Yang SM, Jeon HJ, Lee WD, Noh JW, Lee TH, Kwak TY, Kim B, Kim J. Decrease of Both Cofilin and LIM Kinase Phosphorylation in the Skeletal Muscles of Immobilization-induced Atrophy Rats. J Phys Ther Sci 2014; 26:355-7. [PMID: 24711688 PMCID: PMC3977028 DOI: 10.1589/jpts.26.355] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 09/22/2013] [Indexed: 12/02/2022] Open
Abstract
[Purpose] Immobilization-induced atrophy is a general phenomenon caused by prolonged
muscle disuse associated with orthopaedic conditions. However, changes in the
phosphorylation of atrophy-related cofilin and LIM kinases are still poorly understood. In
this study, we examined whether or not phosphorylation of cofilin and LIM kinases is
altered in the skeletal muscles of rats after 3, 7, 14, and 21 days of cast
immobilization. [Methods] We used two-dimensional gel electrophoresis, mass spectrometry,
and western blotting to examine protein expression and phosphorylation in atrophied rat
gastrocnemius muscles. [Results] The expression of the cofilin was detected in
gastrocnemius muscle strips using proteomic analysis. Cast immobilization after 3, 7, 14,
and 21 days significantly diminished the phosphorylation of cofilin and LIM kinases.
[Conclusion] The present results suggest that cast immobilization-induced atrophy may be
in part related to changes in the phosphorylation of cofilin and LIM kinases in rat
skeletal muscles.
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Affiliation(s)
- Mee-Young Kim
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Ju-Hyun Kim
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Jeong-Uk Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Lim-Kyu Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Seung-Min Yang
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Hye-Joo Jeon
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Won-Deok Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Ji-Woong Noh
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Tae-Hyun Lee
- Department of Combative Martial Arts Training, College of Martial Arts, Yongin University, Republic of Korea
| | - Taek-Yong Kwak
- Taekwondo Instructor Education, College of Martial Arts, Yongin University, Republic of Korea
| | - Bokyung Kim
- Institute of Functional Genomics, Department of Physiology, School of Medicine, Konkuk University, Republic of Korea
| | - Junghwan Kim
- Department of Physical Therapy, College of Public Health and Welfare, Yongin University, Republic of Korea
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Won KJ, Jung SH, Jung SH, Lee KP, Lee HM, Lee DY, Park ES, Kim J, Kim B. DJ-1/park7 modulates vasorelaxation and blood pressure via epigenetic modification of endothelial nitric oxide synthase. Cardiovasc Res 2013; 101:473-81. [PMID: 24323315 DOI: 10.1093/cvr/cvt274] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AIMS DJ-1/park7, a multifunctional protein, may play essential roles in the vascular system. However, the function of DJ-1/park7 in vascular contractility has remained unclear. The present study was designed to investigate whether the DJ-1/park7 is involved in the regulation of vascular contractility and systolic blood pressure (SBP). METHODS AND RESULTS Norepinephrine (NE) elevated contraction in endothelium-intact vessels in a dose-dependent manner, to a greater extent in DJ-1/park7 knockout (DJ-1/park7(-/-)) mice than in wild-type (DJ-1/park7(+/+)) mice. Acetylcholine inhibited NE-evoked contraction in endothelium-intact vessels, and this was markedly impaired in DJ-1/park7(-/-) mice compared with DJ-1/park7(+/+). Nitric oxide (NO) production (82.1 ± 2.8% of control) and endothelial NO synthase (eNOS) expression (61.7 ± 8.9%) were lower, but H2O2 production (126.4 ± 8.6%) was higher, in endothelial cells from DJ-1/park7(-/-) mice than in those from DJ-1/park7(+/+) controls; these effects were reversed by DJ-1/park7-overexpressing endothelial cells from DJ-1/park7(-/-) mice. Histone deacetylase (HDAC)-1 recruitment and H3 histone acetylation at the eNOS promoter were elevated and diminished, respectively, in DJ-1/park7(-/-) mice compared with DJ-1/park7(+/+) controls. Moreover, SBP was significantly elevated in DJ-1/park7(-/-) mice compared with DJ-1/park7(+/+) controls, but this elevation was inhibited in mice treated with valproic acid, an inhibitor of Class I HDACs including HDAC-1. CONCLUSION These results demonstrate that DJ-1/park7 protein may be implicated in the regulation of vascular contractility and blood pressure, probably by the impairment of NO production through H2O2-mediated epigenetic inhibition of eNOS expression.
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Affiliation(s)
- Kyung Jong Won
- Department of Physiology, Institute of Functional Genomics, School of Medicine, Konkuk University, 322 Danwol-dong, Chungju 380-701, South Korea
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Shirpoor A, Salami S, Khadem Ansari MH, Ilkhanizadeh B, Abdollahzadeh N. Ethanol promotes rat aortic vascular smooth muscle cell proliferation via increase of homocysteine and oxidized-low-density lipoprotein. J Cardiol 2013; 62:374-8. [PMID: 23849887 DOI: 10.1016/j.jjcc.2013.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/24/2013] [Accepted: 06/01/2013] [Indexed: 01/17/2023]
Abstract
BACKGROUND Increased levels of homocysteine and oxidized low-density lipoprotein (Ox-LDL) are considered independent risk factors for atherosclerosis. However, no previous study has examined the effects of ethanol-induced increase of homocysteine and Ox-LD on aortic vascular smooth muscle cell (VSMC) proliferation. The aim of the present study was to investigate the relationship between ethanol consumption, increase in homocysteine, Ox-LDL, and aortic VSMC proliferation in rats. METHODS AND RESULTS To address this issue, 24 male Wistar rats were randomly divided into three groups: control, sham, and ethanol-treated. Homocysteine, Ox-LDL, lipid profile, and aortic VSMC proliferation were assessed after 42 days. The results revealed a concurrent, significant increase in homocysteine and Ox-LDL levels, lipid profile levels, and aortic VSMC proliferation in the ethanol-treated group compared with the control and sham groups. CONCLUSION Based on these results, we conclude that ethanol apparently exerts aortic VSMC proliferation through increase in homocysteine and Ox-LDL-mediated oxidative stress, which in turn trigger proatherogenic changes in the aortic wall.
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Affiliation(s)
- Alireza Shirpoor
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Science, Urmia, 5756115111, Iran.
| | - Siamak Salami
- Department of Clinical Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, 5756115111, Iran
| | | | - Behrouz Ilkhanizadeh
- Department of Pathology, Faculty of Medicine, Urmia University of Medical Science, Urmia, 5756115111, Iran
| | - Naseh Abdollahzadeh
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Science, Urmia, 5756115111, Iran
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Lee WY, Chai SY, Lee KH, Park HJ, Kim JH, Kim B, Kim NH, Jeon HS, Kim IC, Choi HS, Song H. Identification of the DDAH2 Protein in Pig Reproductive Tract Mucus: A Putative Oestrus Detection Marker. Reprod Domest Anim 2013; 48:e13-6. [DOI: 10.1111/j.1439-0531.2012.02122.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chung H, Kim B, Jung SH, Won KJ, Jiang X, Lee CK, Lim SD, Yang SK, Song KH, Kim HS. Does phosphorylation of cofilin affect the progression of human bladder cancer? BMC Cancer 2013; 13:45. [PMID: 23374291 PMCID: PMC3568060 DOI: 10.1186/1471-2407-13-45] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Accepted: 01/28/2013] [Indexed: 12/11/2022] Open
Abstract
Background We determined the differently expressed protein profiles and their functions in bladder cancer tissues with the aim of identifying possible target proteins and underlying molecular mechanisms for taking part in their progression. Methods We examined the expression of proteins by proteomic analysis and western blot in normal urothelium, non-muscle-invasive bladder cancers (NMIBCs), and muscle-invasive bladder cancers (MIBCs). The function of cofilin was analyzed using T24 human bladder cancer cells. Results The expression levels of 12 proteins were altered between bladder cancers and normal bladder tissues. Of these proteins, 14-3-3σ was upregulated in both NMIBCs and MIBCs compared with controls. On the other hand, myosin regulatory light chain 2, galectin-1, lipid-binding AI, annexin V, transthyretin, CARD-inhibitor of NF-κB-activating ligand, and actin prepeptide were downregulated in cancer samples. Cofilin, an actin-depolymerizing factor, was prominent in both NMIBCs and MIBCs compared with normal bladder tissues. Furthermore, we confirmed that cofilin phosphorylation was more prominent in MIBCs than in NMIBCs using immunoblotting and immunohistochemcal analyses. Epidermal growth factor (EGF) increased the phosphorylation of cofilin and elevated the migration in T24 cells. Knockdown of cofilin expression with small interfering RNA attenuated the T24 cell migration in response to EGF. Conclusions These results demonstrate that the increased expression and phosphorylation of cofilin might play a role in the occurrence and invasiveness of bladder cancer. We suspected that changes in cofilin expression may participate in the progression of the bladder cancer.
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Affiliation(s)
- Hong Chung
- Department of Urology, School of Medicine, Konkuk University, 82 Gugwon-daero, Chungju, Chungbuk 380-704, Republic of Korea
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Won KJ, Jung SH, Lee CK, Na HR, Lee KP, Lee DY, Park ES, Choi WS, Shim SB, Kim B. DJ-1/park7 protects against neointimal formation via the inhibition of vascular smooth muscle cell growth. Cardiovasc Res 2012; 97:553-61. [PMID: 23230227 DOI: 10.1093/cvr/cvs363] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
AIMS DJ-1/park7 is a ubiquitously expressed multifunctional protein that plays essential roles in a variety of cells. However, its function in the vascular system has not been determined. We investigated the protective roles of DJ-1/park7 in vascular disorders, especially in neointimal hyperplasia. METHODS AND RESULTS DJ-1/park7 was strongly expressed in the neointimal layer, in which its oxidized form was predominant. Treatment of vascular smooth muscle cells (VSMCs) from the mouse aorta with H(2)O(2) increased the oxidation of DJ-1/park7 visualized on two-dimensional electrophoresis gels. The growth of VSMCs in FBS-containing media and the release of H(2)O(2) were significantly increased in DJ-1/park7(-/-) knockout mice compared with DJ-1/park7(+/+) wild-type mice. The expression of cyclin D1 and the phosphorylation of extracellular signal-regulated kinase (ERK) 1/2 were greater in VSMCs from the DJ-1/park7(-/-) aorta than from the DJ-1/park7(+/+) aorta. Both of these measures were inhibited by treatment with an ERK1/2 inhibitor or antioxidants and in DJ-1/park7-overexpressing cells. VSMC proliferation, cyclin D1 expression, and ERK1/2 phosphorylation in response to platelet-derived growth factor-BB were upregulated in DJ-1/park7(-/-) compared with DJ-1/park7(+/+) mice. VSMCs of DJ-1/park7(-/-) mice exhibited higher levels of sprout outgrowth of aortic strips and neointimal plaque formation elicited by carotid artery ligation compared with those of DJ-1/park7(+/+) mice. CONCLUSION These results indicate that DJ-1/park7 is involved in the growth of VSMCs, thereby inhibiting neointimal hyperplasia, and suggest that it might play protective roles in vascular remodelling.
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Affiliation(s)
- Kyung Jong Won
- Department of Medicine, Institute of Functional Genomics, School of Medicine, Konkuk University, 322 Danwol-dong, Chungju 380-701, Korea
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Poussard S, Pires-Alves A, Diallo R, Dupuy JW, Dargelos E. A natural antioxidant pine bark extract, Oligopin®, regulates the stress chaperone HSPB1 in human skeletal muscle cells: a proteomics approach. Phytother Res 2012. [PMID: 23192879 DOI: 10.1002/ptr.4895] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The gradual loss of muscle mass affecting all the elderly (sarcopenia) is most likely due to a decreased number and/or function of satellite cells. Accumulation of reactive oxygen species (ROS) has been clearly correlated to sarcopenia and could contribute to the impairment of satellite cell function. In this study, we analyzed the protective mechanism of action of a natural pine bark extract (Oligopin®) in human muscle satellite cells exposed to oxidative stress (H2O2). This polyphenol belongs to the flavonoid family and was able to abolish the H2 O2-induced apoptotic cell death. A large-scale proteomic strategy allowed us to identify several proteins that may function as early regulators of ROS-mediated events in muscle cells. Interestingly, we identified the stress chaperone heat shock protein beta-1, a main protector of muscle necrosis, as a target of Oligopin® and showed that this polyphenol was able to modulate its stress induced phosphorylation.
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Affiliation(s)
- Sylvie Poussard
- Univ. Bordeaux, CNRS, CBMN, UMR 5248, F-33600, Pessac, France
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Abstract
Resistance to anticancer therapy is a major obstacle for successful management of patients in oncology. Although in the past, various biological mechanisms involved in therapy resistance, in particular multidrug resistance, have been identified, cancer patients did not really benefit. The mechanisms include the enhanced activity of drug extrusion pumps, modulation of cellular death pathways, alteration and repair of target molecules and various other mechanisms. Together they build a complex network mediating an individual therapy-resistant phenotype. The improved description of this multifactorial network should be useful for prediction of treatment response and would allow to design an individual-tailored therapy regiment. Proteome analyzing technologies appear as powerful tools for identifying new factors and protein expression profiles associated with anticancer therapy resistance. In the last years, the application of proteomic techniques identified multiple new factors or protein expression signatures in drug-resistant cell models and cancerous tissues. However, the functional role and the clinical impact of these findings are not yet clarified. So far, none of the proteomic data were useful for the development of improved diagnostic tests, for prediction of individual therapy response or for development of updated chemosensitizers. Here, the previous therapy resistance-related proteome data and future perspectives will be discussed.
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Affiliation(s)
- Hermann Lage
- Institute of Pathology, Charité Campus Mitte, Berlin, Germany.
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Chung H, Jung SH, Ryu JK, Kim B, Kim HS, Yang SK. Isolation and characterization of smooth muscle cells from rat corpus cavernosum tissue for the study of erectile dysfunction. Korean J Urol 2012; 53:556-63. [PMID: 22950001 PMCID: PMC3427841 DOI: 10.4111/kju.2012.53.8.556] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 07/20/2012] [Indexed: 11/18/2022] Open
Abstract
Purpose Primary culture of the cavernous smooth muscle cells from corpus cavernous tissues is known to be difficult, mainly because of contamination with fibroblasts. We applied a new method for better isolation of rat penile smooth muscle cells (RPSMCs) from rat corpus cavernosum tissue for reliable ex vivo research on erectile dysfunction. Materials and Methods With the use of 8-week-old adult male Sprague-Dawley rats, ex vivo migrations of rat cavernous tissue were measured by penis and aortic ring assay by use of a Matrigel-based D-valine-modified culture method. The expression of α-smooth muscle actin (α-SMA) and platelet/endothelial cell adhesion molecule (PECAM)-1 in the RPSMCs was determined by standard immunofluorescent staining and immunoblotting. The expression patterns of phosphodiesterase (PDE) family mRNA in RPSMCs were compared with patterns in rat aortic smooth muscle cells (RASMCs) by use of quantitative real-time reverse transcription polymerase chain reaction. Results Immunocytochemical staining showed greater α-SMA-positive and PCAM-1-negative fluorescence. Moreover, whereas the expression of α-SMA was detected in the RPSMCs, that of PECAM-1 was not. The levels of PDE1A, PDE1B, PDE1C, PDE2A, PDE3A, PDE4A, PDE4B, PDE4C, PDE4D, and PDE5A mRNA in the RPSMCs were about 3.2-, 4.4-, 3.4-, 29.0-, 3.5-, 2.8-, 2.9-, 6.1-, 45.0-, and 6.0-fold the corresponding expression in RASMCs. Conclusions We developed a two-stage tissue culture method utilizing a Matrigel-based sprouting culture system to facilitate stromal cell sprouting and an adherent culture system using D-valine to eliminate the contamination of fibroblasts into the smooth muscle cells.
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Affiliation(s)
- Hong Chung
- Department of Urology, Konkuk University School of Medicine, Chungju, Korea
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Taulet N, Delorme-Walker VD, DerMardirossian C. Reactive oxygen species regulate protrusion efficiency by controlling actin dynamics. PLoS One 2012; 7:e41342. [PMID: 22876286 PMCID: PMC3410878 DOI: 10.1371/journal.pone.0041342] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Accepted: 06/20/2012] [Indexed: 12/31/2022] Open
Abstract
Productive protrusions allowing motile cells to sense and migrate toward a chemotactic gradient of reactive oxygen species (ROS) require a tight control of the actin cytoskeleton. However, the mechanisms of how ROS affect cell protrusion and actin dynamics are not well elucidated yet. We show here that ROS induce the formation of a persistent protrusion. In migrating epithelial cells, protrusion of the leading edge requires the precise regulation of the lamellipodium and lamella F-actin networks. Using fluorescent speckle microscopy, we showed that, upon ROS stimulation, the F-actin retrograde flow is enhanced in the lamellipodium. This event coincides with an increase of cofilin activity, free barbed ends formation, Arp2/3 recruitment, and ERK activity at the cell edge. In addition, we observed an acceleration of the F-actin flow in the lamella of ROS-stimulated cells, which correlates with an enhancement of the cell contractility. Thus, this study demonstrates that ROS modulate both the lamellipodium and the lamella networks to control protrusion efficiency.
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Affiliation(s)
- Nicolas Taulet
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, United States of America
| | - Violaine D. Delorme-Walker
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, United States of America
| | - Céline DerMardirossian
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, United States of America
- * E-mail:
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Won KJ, Lin HY, Jung S, Cho SM, Shin HC, Bae YM, Lee SH, Kim HJ, Jeon BH, Kim B. Antifungal Miconazole Induces Cardiotoxicity Via Inhibition of APE/Ref-1-Related Pathway in Rat Neonatal Cardiomyocytes. Toxicol Sci 2012; 126:298-305. [DOI: 10.1093/toxsci/kfr347] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Grabek KR, Karimpour-Fard A, Epperson LE, Hindle A, Hunter LE, Martin SL. Multistate proteomics analysis reveals novel strategies used by a hibernator to precondition the heart and conserve ATP for winter heterothermy. Physiol Genomics 2011; 43:1263-75. [PMID: 21914784 DOI: 10.1152/physiolgenomics.00125.2011] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The hibernator's heart functions continuously and avoids damage across the wide temperature range of winter heterothermy. To define the molecular basis of this phenotype, we quantified proteomic changes in the 13-lined ground squirrel heart among eight distinct physiological states encompassing the hibernator's year. Unsupervised clustering revealed a prominent seasonal separation between the summer homeotherms and winter heterotherms, whereas within-season state separation was limited. Further, animals torpid in the fall were intermediate to summer and winter, consistent with the transitional nature of this phase. A seasonal analysis revealed that the relative abundances of protein spots were mainly winter-increased. The winter-elevated proteins were involved in fatty acid catabolism and protein folding, whereas the winter-depleted proteins included those that degrade branched-chain amino acids. To identify further state-dependent changes, protein spots were re-evaluated with respect to specific physiological state, confirming the predominance of seasonal differences. Additionally, chaperone and heat shock proteins increased in winter, including HSPA4, HSPB6, and HSP90AB1, which have known roles in protecting against ischemia-reperfusion injury and apoptosis. The most significant and greatest fold change observed was a disappearance of phospho-cofilin 2 at low body temperature, likely a strategy to preserve ATP. The robust summer-to-winter seasonal proteomic shift implies that a winter-protected state is orchestrated before prolonged torpor ensues. Additionally, the general preservation of the proteome during winter hibernation and an increase of stress response proteins, together with dephosphorylation of cofilin 2, highlight the importance of ATP-conserving mechanisms for winter cardioprotection.
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Affiliation(s)
- Katharine R Grabek
- Human Medical Genetics Program, Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, Colorado 80045, USA
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Maheswaranathan M, Gole HKA, Fernandez I, Lassègue B, Griendling KK, San Martín A. Platelet-derived growth factor (PDGF) regulates Slingshot phosphatase activity via Nox1-dependent auto-dephosphorylation of serine 834 in vascular smooth muscle cells. J Biol Chem 2011; 286:35430-35437. [PMID: 21857021 DOI: 10.1074/jbc.m111.268284] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Migration of vascular smooth muscle cells (VSMCs) contributes to vascular pathology. PDGF induces VSMC migration by a Nox1-based NADPH oxidase mediated mechanism. We have previously shown that PDGF-induced migration in VSMCs requires Slingshot-1L (SSH1L) phosphatase activity. In the present work, the mechanism of SSH1L activation by PDGF is further investigated. We identified a 14-3-3 consensus binding motif encompassing Ser-834 in SSH1L that is constitutively phosphorylated. PDGF induces SSH1L auto-dephosphorylation at Ser-834 in wild type (wt), but not in Nox1(-/y) cells. A SSH1L-S834A phospho-deficient mutant has significantly lower binding capacity for 14-3-3 when compared with the phospho-mimetic SSH1L-S834D mutant, and acts as a constitutively active phosphatase, lacking of PDGF-mediated regulation. Given that Nox1 produces reactive oxygen species, we evaluated their participation in this SSH1L activation mechanism. We found that H(2)O(2) activates SSH1L and this is accompanied by SSH1L/14-3-3 complex disruption and 14-3-3 oxidation in wt, but not in Nox1(-/y) cells. Together, these data demonstrate that PDGF activates SSH1L in VSMC by a mechanism that involves Nox1-mediated oxidation of 14-3-3 and Ser-834 SSH1L auto-dephosphorylation.
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Affiliation(s)
| | - Hope K A Gole
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, Georgia 30322
| | - Isabel Fernandez
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, Georgia 30322
| | - Bernard Lassègue
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, Georgia 30322
| | - Kathy K Griendling
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, Georgia 30322
| | - Alejandra San Martín
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, Georgia 30322.
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Kuželová K, Pluskalová M, Grebeňová D, Pavlásková K, Halada P, Hrkal Z. Changes in cell adhesivity and cytoskeleton-related proteins during imatinib-induced apoptosis of leukemic JURL-MK1 cells. J Cell Biochem 2011; 111:1413-25. [PMID: 20830748 DOI: 10.1002/jcb.22868] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The fusion protein Bcr-Abl, which is the molecular cause of chronic myelogenous leukemia (CML) interacts in multiple points with signaling pathways regulating the cellular adhesivity and cytoskeleton architecture and dynamics. We explored the effects of imatinib mesylate, an inhibitor of Bcr-Abl protein used in front-line CML therapy, on the adhesivity of JURL-MK1 cells to fibronectin and searched for underlying changes in the cell proteome. As imatinib induces apoptosis of JURL-MK1 cells, we used three different caspase inhibitors to discriminate between direct consequences of Bcr-Abl inhibition and secondary changes related to the apoptosis. Imatinib treatment caused a transient increase in JURL-MK1 cell adhesivity to fibronectin, possibly due to the switch off of Bcr-Abl activity. Subsequently, we observed a number of changes including a decrease in cell adhesivity, F-actin decomposition, reduction of integrin β1, CD44, and paxillin expression levels and a marked increase in cofilin phophorylation at Ser3. These events were generally related to the proceeding apoptosis but they differed in their sensitivity to the individual caspase inhibitors.
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Affiliation(s)
- K Kuželová
- Department of Cellular Biochemistry, Institute of Hematology and Blood Transfusion, Prague, Czech Republic.
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30
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Balakrishna S, Saravia J, Thevenot P, Ahlert T, Lominiki S, Dellinger B, Cormier SA. Environmentally persistent free radicals induce airway hyperresponsiveness in neonatal rat lungs. Part Fibre Toxicol 2011; 8:11. [PMID: 21388553 PMCID: PMC3061909 DOI: 10.1186/1743-8977-8-11] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Accepted: 03/09/2011] [Indexed: 11/18/2022] Open
Abstract
Background Increased asthma risk/exacerbation in children and infants is associated with exposure to elevated levels of ultrafine particulate matter (PM). The presence of a newly realized class of pollutants, environmentally persistent free radicals (EPFRs), in PM from combustion sources suggests a potentially unrecognized risk factor for the development and/or exacerbation of asthma. Methods Neonatal rats (7-days of age) were exposed to EPFR-containing combustion generated ultrafine particles (CGUFP), non-EPFR containing CGUFP, or air for 20 minutes per day for one week. Pulmonary function was assessed in exposed rats and age matched controls. Lavage fluid was isolated and assayed for cellularity and cytokines and in vivo indicators of oxidative stress. Pulmonary histopathology and characterization of differential protein expression in lung homogenates was also performed. Results Neonates exposed to EPFR-containing CGUFP developed significant pulmonary inflammation, and airway hyperreactivity. This correlated with increased levels of oxidative stress in the lungs. Using differential two-dimensional electrophoresis, we identified 16 differentially expressed proteins between control and CGUFP exposed groups. In the rats exposed to EPFR-containing CGUFP; peroxiredoxin-6, cofilin1, and annexin A8 were upregulated. Conclusions Exposure of neonates to EPFR-containing CGUFP induced pulmonary oxidative stress and lung dysfunction. This correlated with alterations in the expression of various proteins associated with the response to oxidative stress and the regulation of glucocorticoid receptor translocation in T lymphocytes.
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Affiliation(s)
- Shrilatha Balakrishna
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA
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31
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Lee S, Joung M, Nam T, Park W, Ji Y, Yu J. Cryptosporidium parvum: Radiation-induced alteration of the oocyst proteome. Exp Parasitol 2011; 127:25-30. [DOI: 10.1016/j.exppara.2010.06.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Revised: 06/09/2010] [Accepted: 06/15/2010] [Indexed: 11/18/2022]
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Won KJ, Lee P, Jung SH, Jiang X, Lee CK, Lin HY, Kang H, Lee HM, Kim J, Toyokuni S, Kim B. 3-morpholinosydnonimine participates in the attenuation of neointima formation via inhibition of annexin A2-mediated vascular smooth muscle cell migration. Proteomics 2010; 11:193-201. [PMID: 21204247 DOI: 10.1002/pmic.200900834] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Revised: 09/18/2010] [Accepted: 10/15/2010] [Indexed: 01/11/2023]
Abstract
3-Morpholinosydnonimine (SIN-1) affects vascular smooth muscle cell migration and proliferation, processes essential for atherosclerosis. However, the mechanism by which SIN-1 exerts these effects has not been elucidated. We used 2-DE followed by MALDI-TOF/TOF MS to identify responses in protein expression to SIN-1 in rat aortic smooth muscle. Platelet-derived growth factor-BB increased cell migration and proliferation in rat aortic smooth muscle cells, and subsequent SIN-1 treatment inhibited it. Administration of SIN-1 in vivo attenuated neointima formation in balloon-injured rat carotid arteries. Proteomic analysis showed that glutathione peroxidase and 40S ribosomal protein S12 were differentially expressed in aortic strips exposed to SIN-1. Expression of annexin A2 was decreased by SIN-1. Platelet-derived growth factor-BB-induced cell migration was increased and inhibited in rat aortic smooth muscle cells with overexpression and knockdown of annexin A2 gene, respectively. The expression of annexin A2 was increased in vascular neointima compared with the intact control, which was inhibited by SIN-1 treatment. These results demonstrate that SIN-1 may attenuate vascular neointima formation by inhibiting annexin A2-mediated migration. Therefore, annexin A2 may be a potential target for therapeutic strategies for atherosclerosis.
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Affiliation(s)
- Kyung-Jong Won
- Department of Physiology, School of Medicine, Konkuk University, Danwol-dong, Chungju, Korea
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Petrusca DN, Gu Y, Adamowicz JJ, Rush NI, Hubbard WC, Smith PA, Berdyshev EV, Birukov KG, Lee CH, Tuder RM, Twigg HL, Vandivier RW, Petrache I. Sphingolipid-mediated inhibition of apoptotic cell clearance by alveolar macrophages. J Biol Chem 2010; 285:40322-32. [PMID: 20956540 DOI: 10.1074/jbc.m110.137604] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A decreased clearance of apoptotic cells (efferocytosis) by alveolar macrophages (AM) may contribute to inflammation in emphysema. The up-regulation of ceramides in response to cigarette smoking (CS) has been linked to AM accumulation and increased detection of apoptotic alveolar epithelial and endothelial cells in lung parenchyma. We hypothesized that ceramides inhibit the AM phagocytosis of apoptotic cells. Release of endogenous ceramides via sphingomyelinase or exogenous ceramide treatments dose-dependently impaired apoptotic Jurkat cell phagocytosis by primary rat or human AM, irrespective of the molecular species of ceramide. Similarly, in vivo augmentation of lung ceramides via intratracheal instillation in rats significantly decreased the engulfment of instilled target apoptotic thymocytes by resident AM. The mechanism of ceramide-induced efferocytosis impairment was dependent on generation of sphingosine via ceramidase. Sphingosine treatment recapitulated the effects of ceramide, dose-dependently inhibiting apoptotic cell clearance. The effect of ceramide on efferocytosis was associated with decreased membrane ruffle formation and attenuated Rac1 plasma membrane recruitment. Constitutively active Rac1 overexpression rescued AM efferocytosis against the effects of ceramide. CS exposure significantly increased AM ceramides and recapitulated the effect of ceramides on Rac1 membrane recruitment in a sphingosine-dependent manner. Importantly, CS profoundly inhibited AM efferocytosis via ceramide-dependent sphingosine production. These results suggest that excessive lung ceramides may amplify lung injury in emphysema by causing both apoptosis of structural cells and inhibition of their clearance by AM.
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Affiliation(s)
- Daniela N Petrusca
- Department of Medicine, Indiana University, Indianapolis, Indiana 46202, USA
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Borro M, Gentile G, De Luca O, Torre MS, Aimati L, Tatarelli C, Antonietta Aloe Spiriti M, Christina Cox M, Simmaco M. Specific effects exerted by B-lymphoproliferative diseases on peripheral T-lymphocyte protein expression. Br J Haematol 2010; 150:463-72. [PMID: 20618332 DOI: 10.1111/j.1365-2141.2010.08285.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A proteomic approach was applied to study the protein expression profile of peripheral T-cells derived from patients at the onset of different B-lymphoproliferative diseases, because a rising interest in specific actions played by T-cells in such pathologies has emerged. Decreased levels of profilin-1 and cofilin-1 and increased levels of coronin1A and prohibitin were found in patients, compared with healthy controls. The protein-protein interaction network of these proteins was studied using a web-based bioinformatics tool, highlighting the actin cytoskeleton regulation as the main biological process involved in peripheral T-cells of such patients. Unsupervised cluster analysis of protein expression data shows that the recorded alteration of T-cell proteome was specifically induced by B-cell pathologies.
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Affiliation(s)
- Marina Borro
- 2nd Faculty of Medicine, Sant'Andrea Hospital, Sapienza University of Rome, Italy
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35
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Bosselut N, Housset C, Marcelo P, Rey C, Burmester T, Vinh J, Vaubourdolle M, Cadoret A, Baudin B. Distinct proteomic features of two fibrogenic liver cell populations: hepatic stellate cells and portal myofibroblasts. Proteomics 2010; 10:1017-28. [PMID: 20049859 DOI: 10.1002/pmic.200900257] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In chronic liver diseases, the accumulation of extracellular matrix leading to fibrosis is caused by myofibroblasts, the origins of which are debatable. We performed a comparative proteomic study to identify markers and gain insight into distinct functions of myofibroblasts derived either from hepatic stellate cells (HSCs) or from portal mesenchymal cells. After isolation from normal liver and culture in similar conditions, myofibroblastic HSCs (MF-HSCs) presented enlarged cytoplasms whereas portal myofibroblasts (PMFs) were more proliferative, and formed more stress fibers. The two cell types were subjected to comparative analyses by 2-D MS/MS. Six proteins were overexpressed in PMFs, with myofibroblast-related typical functions. Among them, cofilin-1 showed the greatest difference in expression and a lower pI than expected. Immunoblot demonstrated higher levels of phosphorylation, a modification of the protein implicated in stress fiber formation. Eleven proteins, mostly involved in stress response, were overexpressed in MF-HSCs. Cytoglobin had the highest level of overexpression, as confirmed by reverse transcription quantitative real-time PCR, immunoblot and immunocytochemical analyses. These results identify cytoglobin as the best marker for distinguishing MF-HSCs from PMFs and suggest different functions for the two cell populations in the liver wound healing response, with a prominent role for PMFs in scar formation.
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Affiliation(s)
- Nelly Bosselut
- AP-HP, Hôpital Saint-Antoine, Biochimie A, Paris, France
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Farina A, Chambery A, Esposito S, Agozzino L, Cotrufo M, Della Corte A, Parente A. Proteomic profiling of medial degeneration in human ascending aorta. Clin Biochem 2010; 43:387-96. [PMID: 19896479 DOI: 10.1016/j.clinbiochem.2009.10.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Revised: 10/12/2009] [Accepted: 10/20/2009] [Indexed: 01/13/2023]
Abstract
OBJECTIVE The objective of this study was the construction of a reference map for aortic medial degeneration by a proteomic approach. DESIGN AND METHODS A proteomic profiling of the media of human ascending aorta was performed by two-dimensional electrophoresis and MALDI-TOF mass spectrometry. RESULTS A reliable protocol for two-dimensional electrophoresis analysis of human aortic media proteins was developed allowing the selection and identification of 52 spots. Protein identifications revealed that the predominant vascular smooth muscle cell proteins isolated from grade 1 aortic medial degeneration (MD) included proteins involved in muscle contraction, protein folding, cytoskeletal structure and metabolic processes, and those with antioxidant or transport functions. The most populated functional classes were those related to muscle contraction and cytoskeletal proteins, including actin, calmodulin, calponin, myosin light chain, tropomyosin, vimentin, profilin and transgelin. CONCLUSIONS The obtained aortic MD proteomic profile provides a relevant background for future studies aimed to find further specific molecular changes potentially related to the aortic MD process.
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Lee CK, Han JS, Won KJ, Jung SH, Park HJ, Lee HM, Kim J, Park YS, Kim HJ, Park PJ, Park TK, Kim B. Diminished expression of dihydropteridine reductase is a potent biomarker for hypertensive vessels. Proteomics 2009; 9:4851-8. [PMID: 19743417 DOI: 10.1002/pmic.200800973] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2008] [Accepted: 07/20/2009] [Indexed: 11/11/2022]
Abstract
To identify the new targets for hypertension, we analyzed the protein expression profiles of aortic smooth muscle in spontaneously hypertensive rats (SHR) of various ages during the development of hypertension, as well as in age-matched normotensive Wistar-Kyoto (WKY) rats, using a proteomic analysis. The expressions of seven proteins were altered in SHR compared with WKY rats. Of these proteins, NADH dehydrogenase 1alpha, GSTomega1, peroxi-redoxin I and transgelin were upregulated in SHR compared with WKY rats. On the other hand, the expression of HSP27 and Ran protein decreased in SHR. The diminution of dihydrobiopterin reductase, an enzyme located in the regeneration pathways of tetrahydrobiopterin (BH4), was also prominent in SHR. The results from a PCR analysis revealed that the expression of BH4 biosynthesis enzymes - GTP cyclohydrolase-1 and sepiapterin reductase - decreased and increased, respectively, in SHR compared with WKY rats. The level of BH4 was less in aortic strips from SHR than from WKY rats. Moreover, treatment with BH4 inhibited aortic smooth muscle contraction induced by serotonin. These results suggest that the deficiency in BH4 regeneration produced by diminished dihydrobiopterin reductase expression is involved in vascular disorders in hypertensive rats.
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Affiliation(s)
- Chang-Kwon Lee
- Institute of Functional Genomics, School of Medicine, Konkuk University, Danwol-dong, Choonju, Korea
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Abstract
Cellular stimuli generate reactive oxygen species (ROS) via the local action of NADPH oxidases (Nox) to modulate cytoskeletal organization and cell migration through unknown mechanisms. Cofilin is a major regulator of cellular actin dynamics whose activity is controlled by phosphorylation/dephosphorylation at Ser3. Here we show that Slingshot-1L (SSH-1L), a selective cofilin regulatory phosphatase, is involved in H(2)O(2)-induced cofilin dephosphorylation and activation. SSH-1L is activated by its release from a regulatory complex with 14-3-3zeta protein through the redox-mediated oxidation of 14-3-3zeta by H(2)O(2). The ROS-dependent activation of the SSH-1L-cofilin pathway stimulates the SSH-1L-dependent formation of cofilin-actin rods in cofilin-GFP-expressing HeLa cells. Similarly, the formation of endogenous ROS stimulated by angiotensin II (AngII) also activates the SSH-1L-cofilin pathway via oxidation of 14-3-3zeta to increase AngII-induced membrane ruffling and cell motility. These results suggest that the formation of ROS by NADPH oxidases engages a SSH-1L-cofilin pathway to regulate cytoskeletal organization and cell migration.
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Affiliation(s)
- Jun-Sub Kim
- Department of Immunology and Microbial Science and Department of Cell Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
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Liu X, Shen J, Zhan R, Wang X, Wang X, Zhang Z, Leng X, Yang Z, Qian L. Proteomic analysis of homocysteine induced proliferation of cultured neonatal rat vascular smooth muscle cells. Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics 2009; 1794:177-84. [DOI: 10.1016/j.bbapap.2008.10.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2008] [Revised: 09/08/2008] [Accepted: 10/03/2008] [Indexed: 10/21/2022]
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Lee HM, Jeon BH, Won KJ, Lee CK, Park TK, Choi WS, Bae YM, Kim HS, Lee SK, Park SH, Irani K, Kim B. Gene Transfer of Redox Factor-1 Inhibits Neointimal Formation. Circ Res 2009; 104:219-27, 5p following 227. [DOI: 10.1161/circresaha.108.178699] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The role of apurinic/apyrimidinic endonuclease-1/redox factor-1 (Ref-1) in vascular smooth muscle cells has yet to be clearly elucidated. Therefore, we attempted to determine the roles of Ref-1 in the migration induced by platelet-derived growth factor (PDGF)-BB and in its signaling in rat aortic smooth muscle cells (RASMCs). Cellular migration, superoxide (O
2
−·
) production, Rac-1 activity, and neointima formation were determined in cells transfected with adenoviruses encoding for Ref-1 (AdRef-1) and small interference RNA of Ref-1. Overexpression of Ref-1 induced by treatment with RASMCs coupled with AdRef-1 inhibited the migration induced by PDGF-BB. PDGF-BB also increased the phosphorylation of the PDGFβ receptor, spleen tyrosine kinase (Syk), mitogen-activated protein kinase, and heat shock protein 27, but these increases were significantly inhibited by AdRef-1 treatment. PDGF-BB increased O
2
−·
production and Rac-1 activity, and these were diminished in cells transfected with AdRef-1. In contrast, RASMC migration, phosphorylation of Syk and O
2
−·
production in response to PDGF-BB were increased by the knock down of Ref-1 with small interference RNA. The phosphorylation of PDGFβ receptor in response to PDGF-BB was inhibited completely by the Syk inhibitor and was partly attenuated by a NADPH oxidase inhibitor. PDGF-BB increased the sprout outgrowth of the aortic ring ex vivo, which was inhibited in the AdRef-1–infected RASMCs as compared with the controls. Balloon injury–induced neointimal formation was significantly attenuated by the gene transfer of AdRef-1. These results indicate that Ref-1 inhibits the PDGF-mediated migration signal via the inhibition of reactive oxygen species–mediated Syk activity in RASMCs.
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Affiliation(s)
- Hwan Myung Lee
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Byeong Hwa Jeon
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Kyung-Jong Won
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Chang-Kwon Lee
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Tae-Kyu Park
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Wahn Soo Choi
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Young Min Bae
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Hyo Shin Kim
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Sang Ki Lee
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Seung Hwa Park
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Kaikobad Irani
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
| | - Bokyung Kim
- From the Institute of Medical Sciences (H.M.L., K.-J.W., C.-K.L., T.-K.P., W.S.C., Y.M.B., S.H.P., B.K.), School of Medicine, Konkuk University, Danwol-dong, Chungju, South Korea; Infection Signaling Network Research Center (B.H.J., H.S.K., S.K.L.), Department of Physiology, Chungnam National University, South Korea; and Cardiovascular Institute (K.I.), University of Pittsburgh Medical Center, Pa
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Won KJ, Park SH, Park T, Lee CK, Lee HM, Choi WS, Kim SJ, Park PJ, Jang HK, Kim SH, Kim B. Cofilin phosphorylation mediates proliferation in response to platelet-derived growth factor-BB in rat aortic smooth muscle cells. J Pharmacol Sci 2009; 108:372-9. [PMID: 19023180 DOI: 10.1254/jphs.fp0072354] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Cofilin, an actin-binding protein, is essential for a variety of cell responses. In this study, we investigated the correlation between proliferation and cofilin phosphorylation in response to platelet-derived growth factor (PDGF) in rat aortic smooth muscle cells (RASMCs). The phosphorylation of cofilin and activity of mitogen-activated protein kinase (MAPK) were measured by Western analyses and proliferation in RASMCs was measured by BrdU incorporation assays. The phosphorylation of cofilin in RASMCs was decreased by PDGF-BB treatment at 10 min, but recovered to the level of the quiescent state at 60 min. PDGF-BB-induced dephosphorylation of cofilin was inhibited by pretreatment with piceatannol (a spleen tyrosine kinase [Syk] inhibitor), PP2 (a Src inhibitor), or SP600125 (a c-Jun N-terminal kinase [JNK] inhibitor), but not by PD98059, an inhibitor of extracellular signal-regulated kinase 1/2. PDGF-BB increased JNK activity and proliferation, and these responses were suppressed by kinase inhibitors and small interference RNA-cofilin. The results suggest that PDGF-BB-induced dephosphorylation of cofilin can be promoted via the JNK pathway, which is regulated by both Syk and Src kinases and that cofilin dephosphorylation may be involved in PDGF-BB-induced RASMC proliferation.
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Affiliation(s)
- Kyung-Jong Won
- Institute of Medical Sciences, School of Medicine, Konkuk University, Chungju, Korea
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Haudek VJ, Gundacker NC, Slany A, Wimmer H, Bayer E, Pablé K, Gerner C. Consequences of Acute and Chronic Oxidative Stress upon the Expression Pattern of Proteins in Peripheral Blood Mononuclear Cells. J Proteome Res 2008; 7:5138-47. [DOI: 10.1021/pr800438f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Verena J. Haudek
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Austria, Section Biomedical Laboratory Science, University of Applied Science, Vienna, Austria, and Austrian Research Center Seibersdorf, Vienna, Austria
| | - Nina C. Gundacker
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Austria, Section Biomedical Laboratory Science, University of Applied Science, Vienna, Austria, and Austrian Research Center Seibersdorf, Vienna, Austria
| | - Astrid Slany
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Austria, Section Biomedical Laboratory Science, University of Applied Science, Vienna, Austria, and Austrian Research Center Seibersdorf, Vienna, Austria
| | - Helge Wimmer
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Austria, Section Biomedical Laboratory Science, University of Applied Science, Vienna, Austria, and Austrian Research Center Seibersdorf, Vienna, Austria
| | - Editha Bayer
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Austria, Section Biomedical Laboratory Science, University of Applied Science, Vienna, Austria, and Austrian Research Center Seibersdorf, Vienna, Austria
| | - Karoline Pablé
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Austria, Section Biomedical Laboratory Science, University of Applied Science, Vienna, Austria, and Austrian Research Center Seibersdorf, Vienna, Austria
| | - Christopher Gerner
- Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Austria, Section Biomedical Laboratory Science, University of Applied Science, Vienna, Austria, and Austrian Research Center Seibersdorf, Vienna, Austria
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Mendelsohn BA, Malone JP, Townsend RR, Gitlin JD. Proteomic analysis of anoxia tolerance in the developing zebrafish embryo. Comp Biochem Physiol Part D Genomics Proteomics 2008; 4:21-31. [PMID: 20403745 DOI: 10.1016/j.cbd.2008.09.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2008] [Revised: 09/25/2008] [Accepted: 09/26/2008] [Indexed: 12/26/2022]
Abstract
While some species and tissue types are injured by oxygen deprivation, anoxia tolerant organisms display a protective response that has not been fully elucidated and is well-suited to genomic and proteomic analysis. However, such methodologies have focused on transcriptional responses, prolonged anoxia, or have used cultured cells or isolated tissues. In this study of intact zebrafish embryos, a species capable of >24 h survival in anoxia, we have utilized 2D difference in gel electrophoresis to identify changes in the proteomic profile caused by near-lethal anoxic durations as well as acute anoxia (1 h), a timeframe relevant to ischemic events in human disease when response mechanisms are largely limited to post-transcriptional and post-translational processes. We observed a general stabilization of the proteome in anoxia. Proteins involved in oxidative phosphorylation, antioxidant defense, transcription, and translation changed over this time period. Among the largest proteomic alterations was that of muscle cofilin 2, implicating the regulation of the cytoskeleton and actin assembly in the adaptation to acute anoxia. These studies in an intact embryo highlight proteomic components of an adaptive response to anoxia in a model organism amenable to genetic analysis to permit further mechanistic insight into the phenomenon of anoxia tolerance.
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Affiliation(s)
- Bryce A Mendelsohn
- Departments of Pediatrics, Washington University School of Medicine, St. Louis, Missouri 63110, USA
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Li J, Niu XL, Madamanchi NR. Leukocyte antigen-related protein tyrosine phosphatase negatively regulates hydrogen peroxide-induced vascular smooth muscle cell apoptosis. J Biol Chem 2008; 283:34260-72. [PMID: 18854310 DOI: 10.1074/jbc.m806087200] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Reactive oxygen species (ROS) have been implicated in vascular smooth muscle cell (VSMC) apoptosis, a hallmark of advanced atherosclerotic lesions. Transient oxidation and inactivation of protein-tyrosine phosphatases play a critical role in cellular response to ROS production. However, the function of leukocyte antigen-related (LAR) protein-tyrosine phosphatase in ROS signaling is not known. To determine the expression of LAR in ROS-induced apoptosis, we investigated hydrogen peroxide-induced cell death and signaling in aortic VSMCs from wild-type and LAR(-/-) mice. Histone-associated DNA fragmentation and caspase-3/7 activity were significantly enhanced, mitochondrial membrane integrity was compromised, and cell viability was significantly decreased following H(2)O(2) treatment in LAR(-/-) VSMCs compared with wild-type cells. Stronger and sustained increase in autophosphorylation and activity of Fyn, an Src family tyrosine kinase, was observed in LAR(-/-) cells compared with wild-type cells following H(2)O(2) treatment. LAR binds to activated Fyn in H(2)O(2)-treated VSMCs, and recombinant LAR dephosphorylates phosphorylated-Fyn in vitro. In addition, LAR deficiency enhanced H(2)O(2)-induced phosphorylation of Janus kinase 2 (JAK2), signal transducer and activator of transcription 3 (STAT3), and p38 mitogen-activated protein kinase (MAPK). PP2, a Fyn-specific inhibitor, blocked JAK2, STAT3, and p38 MAPK activation and significantly attenuated apoptosis induced by H(2)O(2). AG490, a JAK2-specific inhibitor, significantly attenuated H(2)O(2)-induced apoptosis, and blocked H(2)O(2)-induced activation of STAT3, but not p38 MAPK in both wild-type and LAR(-/-) VSMCs. Attenuation of Fyn expression by short hairpin RNA significantly decreased H(2)O(2)-induced downstream signaling and apoptosis in VSMCs. Together, these data indicate that LAR regulates Fyn/JAK2/STAT3 and Fyn/p38 MAPK pathways involved in ROS-induced apoptosis.
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Affiliation(s)
- Juxiang Li
- Department of Medicine, Carolina Cardiovascular Biology Center, University of North Carolina, Chapel Hill, North Carolina 27599-7126, USA
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Abstract
Oxidative modifications of protein thiols are important mechanisms for regulating protein functions. The present study aimed to compare the relative effectiveness of two thiol-specific quantitative proteomic techniques, difference gel electrophoresis (DIGE) and isotope coded affinity tag (ICAT), for the discovery of redox-sensitive proteins in heart tissues. We found that these two methods were largely complementary; each could be used to reveal a set of unique redox-sensitive proteins. Some of these proteins are low-abundant signaling proteins and membrane proteins. From DIGE analysis, we found that both NF-kappaB-repressing protein and epoxide hydrolase were sensitive to H 2O 2 oxidation. In ICAT analysis, we found that specific cysteines within sacroplasmic endoplamic reticulum calcium ATPase 2 and voltage-dependent anion-selective channel protein 1 were sensitive to H 2O 2 oxidation. From these analyses, we conclude that both methods should be employed for proteome-wide studies, to maximize the possibility of identifying proteins containing redox-sensitive cysteinyl thiols in complex biological systems.
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Affiliation(s)
- Cexiong Fu
- Center for Advanced Proteomics Research and Department of Biochemistry and Molecular Biology, UMDNJ-New Jersey Medical School Cancer Center, Newark, New Jersey 07103, USA
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Qi YX, Qu MJ, Long DK, Liu B, Yao QP, Chien S, Jiang ZL. Rho-GDP dissociation inhibitor alpha downregulated by low shear stress promotes vascular smooth muscle cell migration and apoptosis: a proteomic analysis. Cardiovasc Res 2008; 80:114-22. [DOI: 10.1093/cvr/cvn158] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
SUMMARY: Biomarkers provide a powerful approach to understanding the spectrum of cardiovascular diseases. They have application in screening, diagnostic, prognostication, prediction of recurrences and monitoring of therapy. The "omics" tool are becoming very useful in the development of new biomarkers in cardiovascular diseases. Among them, proteomics is especially fitted to look for new proteins in health and disease and is playing a significant role in the development of new diagnostic tools in cardiovascular diagnosis and prognosis. This review provides an overview of progress in applying proteomics to atherosclerosis. First, we describe novel proteins identified analysing atherosclerotic plaques directly. Careful analysis of proteins within the atherosclerotic vascular tissue can provide a repertoire of proteins involved in vascular remodelling and atherogenesis. Second, we discuss recent data concerning proteins secreted by atherosclerotic plaques. The definition of the atheroma plaque secretome resides in that proteins secreted by arteries can be very good candidates of novel biomarkers. Finally we describe proteins that have been differentially expressed (versus controls) by individual cells which constitute atheroma plaques (endothelial cells, vascular smooth muscle cells, macrophages and foam cells) as well as by circulating cells (monocytes, platelets) or novel biomarkers present in plasma.
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Affiliation(s)
- F. Vivanco
- Department of Immunology. Fundación Jiménez Díaz, Madrid, Spain
- Department of Biochemistry and Molecular Biology I, Universidad Complutense, Proteomic Unit, Madrid, Spain
| | - L.R. Padial
- Department of Cardiology. Hospital Virgen de la Salud, SESCAM, Toledo, Spain
| | - V.M. Darde
- Department of Immunology. Fundación Jiménez Díaz, Madrid, Spain
| | - F. de la Cuesta
- Department of Immunology. Fundación Jiménez Díaz, Madrid, Spain
| | | | - Natacha Diaz-Prieto
- Department of Vascular Pathophysiology. Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain
| | - M.G. Barderas
- Department of Immunology. Fundación Jiménez Díaz, Madrid, Spain
- Department of Vascular Pathophysiology. Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain
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Zhao XY, Li GY, Liu Y, Chai LM, Chen JX, Zhang Y, Du ZM, Lu YJ, Yang BF. Resveratrol protects against arsenic trioxide-induced cardiotoxicity in vitro and in vivo. Br J Pharmacol 2008; 154:105-13. [PMID: 18332854 DOI: 10.1038/bjp.2008.81] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE The clinical use of arsenic trioxide (As(2)O(3)), a potent antineoplastic agent, is limited by its severe cardiotoxic effects. QT interval prolongation and apoptosis have been implicated in the cardiotoxicity of As(2)O(3). The present study was designed to evaluate the effects of resveratrol on As(2)O(3)-induced apoptosis and cardiac injury. EXPERIMENTAL APPROACH In a mouse model of As(2)O(3)-induced cardiomyopathy in vivo, QT intervals and plasma enzyme activities were measured; cardiac tissues were examined histologically and apoptosis assessed. In H9c2 cardiomyocyte cells, viability, apoptosis, generation of reactive oxygen species (ROS) and cellular calcium levels were measured. KEY RESULTS In the mouse model, resveratrol reduced As(2)O(3)-induced QT interval prolongation and cardiomyocyte injury (apoptosis, myofibrillar loss and vacuolization). In addition, increased lactate dehydrogenase activity and decreased activities of glutathione peroxidase, catalase and superoxide dismutase were observed in the plasma of As(2)O(3)-treated mice; these changes were prevented by pretreatment with resveratrol. In As(2)O(3)-treated H9c2 cardiomyocytes, resveratrol significantly increased cardiomyocyte viability and attenuated cell apoptosis as measured by acridine orange/ethidium bromide staining, TdT-mediated dUTP nick end labelling assay and caspase-3 activity. As(2)O(3)-induced generation of ROS and intracellular calcium mobilization in H9c2 cells was also suppressed by pretreatment with resveratrol. CONCLUSIONS AND IMPLICATIONS Our results showed that resveratrol significantly attenuated As(2)O(3)-induced QT prolongation, structural abnormalities and oxidative damage in the heart. In H9c2 cardiomyocytes, resveratrol also decreased apoptosis, production of ROS and intracellular calcium mobilization induced by treatment with As(2)O(3). These observations suggested that resveratrol has the potential to protect against cardiotoxicity in As(2)O(3)-exposed patients.
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Affiliation(s)
- X-Y Zhao
- Department of Pharmacology, Harbin Medical University, Harbin, PR China
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Wang XL, Fu A, Spiro C, Lee HC. Clinical application of proteomics approaches in vascular diseases. Proteomics Clin Appl 2008; 2:238-50. [DOI: 10.1002/prca.200780005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Indexed: 01/12/2023]
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Lee HM, Kim HJ, Won KJ, Choi WS, Park SH, Song H, Park PJ, Park TK, Lee CK, Kim B. Soluble form of vascular cell adhesion molecule 1 induces migration and proliferation of vascular smooth muscle cells. J Vasc Res 2008; 45:259-68. [PMID: 18182825 DOI: 10.1159/000112941] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2007] [Accepted: 10/22/2007] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Serum levels of soluble vascular cell adhesion molecule 1 (sVCAM-1) shed from its membrane-bound form are elevated in hypertension. This study clarified the effects of sVCAM-1 on vascular responses in rat aortic smooth muscle cells (RASMCs). METHODS Boyden chamber, 5-bromo-2'-deoxyuridine incorporation and ex vivo aortic ring assays for migration and proliferation, and Western blot for the kinase activity were used. RESULTS Spontaneously hypertensive rats (SHR) and Wistar Kyoto (WKY) rats were compared functionally. sVCAM-1 increased RASMC migration and proliferation, which were greater in SHR compared with WKY rats. RASMCs expressed the very late antigen 4alpha receptor integrin with no difference between SHR and WKY rats. Inhibitors of phosphoinositide kinase 3 (PI3K) and spleen tyrosine kinase (Syk) and small interference RNA-Syk abolished the sVCAM-1-induced migration, proliferation and phosphorylation of focal adhesion kinase. The phosphorylation of Syk was significantly greater in RASMCs from SHR than from WKY rats. sVCAM-1 increased aortic sprout outgrowth, which was inhibited by inhibitors of PI3K and Syk. CONCLUSIONS This study suggests that sVCAM-1 promotes the RASMC migration and proliferation via the focal adhesion kinase pathway regulated by Syk and PI3K, and the altered sVCAM-1-induced responses during hypertension are closely associated with the increments in intracellular signal transmission.
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Affiliation(s)
- Hwan Myung Lee
- Department of Medicine, College of Medicine, Konkuk University, Chungju, South Korea
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