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Vestweber D. Vascular Endothelial Protein Tyrosine Phosphatase Regulates Endothelial Function. Physiology (Bethesda) 2021; 36:84-93. [PMID: 33595386 DOI: 10.1152/physiol.00026.2020] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Vascular endothelial protein tyrosine phosphatase (VE-PTP) is a receptor-type PTP (RPTP), predominantly expressed in vascular endothelial cells. It regulates embryonic and tumor angiogenesis and controls vascular permeability and homeostasis in inflammation. Major substrates are the tyrosine kinase receptor Tie-2 and the adhesion molecule VE-cadherin. This review describes how VE-PTP controls vascular functions by its various substrates and the therapeutic potential of VE-PTP in various pathophysiological settings.
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Monteiro LF, Forti FL. Network analysis of DUSP12 partners in the nucleus under genotoxic stress. J Proteomics 2019; 197:42-52. [PMID: 30779967 DOI: 10.1016/j.jprot.2019.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 01/23/2019] [Accepted: 02/12/2019] [Indexed: 01/01/2023]
Abstract
Dual Specificity Phosphatase 12 is a member of the Atypical DUSP Protein Tyrosine Phosphatase family, meaning that it does not contain typical MAP kinase targeting motifs, while being able to dephosphorylate tyrosine and serine/threonine residues. DUSP12 contains, apart from its catalytic domain, a zinc finger domain, making it one of the largest DUSPs, which displays strong nuclear expression in several tissues. In this work we identified nuclear targets of DUSP12 in two different cancer cell lines (A549 and MCF-7), challenging them with genotoxic stimuli to observe the effect on the networks and to link existing information about DUSP12 functions to the data obtained though mass spectrometry. We found network connections to the cytoskeleton (e.g. IQGAP1), to the chromatin (e.g. HP1BP3), to the splicing machinery and to the previously known pathway of ribosome maturation (e.g. TCOF1), which draw insight into many of the functions of this phosphatase, much likely connecting it to distinct, previously unknown genomic stability mechanisms.
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Affiliation(s)
- Lucas Falcão Monteiro
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - Fábio Luís Forti
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo, Brazil.
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DUSPs as critical regulators of cardiac hypertrophy. Clin Sci (Lond) 2017; 131:155-158. [PMID: 28011900 DOI: 10.1042/cs20160766] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 11/18/2016] [Accepted: 11/22/2016] [Indexed: 11/17/2022]
Abstract
This commentary highlights the research presented by Li et al. [15]. In this issue of Clinical Science, which demonstrates that dual specific phosphatase 12 (DUSP12), through JNK1/2 inhibition, alleviates cardiac hypertrophy in response to pressure overload, making it a potential therapeutic target.
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Son MJ, Kim WK, Oh KJ, Park A, Lee DS, Han BS, Lee SC, Bae KH. Methyltransferase and demethylase profiling studies during brown adipocyte differentiation. BMB Rep 2017; 49:388-93. [PMID: 27157542 PMCID: PMC5032007 DOI: 10.5483/bmbrep.2016.49.7.062] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Indexed: 02/03/2023] Open
Abstract
Although brown adipose tissue is important with regard to energy balance, the molecular mechanism of brown adipocyte differentiation has not been extensively studied. Specifically, regulation factors at the level of protein modification are largely unknown. In this study, we examine the changes in the expression level of enzymes which are involved in protein lysine methylation during brown adipocyte differentiation. Several enzymes, in this case SUV420H2, PRDM9, MLL3 and JHDM1D, were found to be up-regulated. On the other hand, Set7/9 was significantly down-regulated. In the case of SUV420H2, the expression level increased sharply during brown adipocyte differentiation, whereas the expression of SUV420H2 was marginally enhanced during the white adipocyte differentiation. The knock-down of SUV420H2 caused the suppression of brown adipocyte differentiation, as compared to a scrambled control. These results suggest that SUV420H2, a methyltransferase, is involved in brown adipocyte differentiation, and that the methylation of protein lysine is important in brown adipocyte differentiation. [BMB Reports 2016; 49(7): 388-393]
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Affiliation(s)
- Min Jeong Son
- Metabolic Regulation Research Center, KRIBB, Daejeon 34141, Korea
| | - Won Kon Kim
- Metabolic Regulation Research Center, KRIBB; Department of Functional Genomics, University of Science and Technology (UST), Daejeon 34141, Korea
| | - Kyoung-Jin Oh
- Metabolic Regulation Research Center, KRIBB, Daejeon 34141, Korea
| | - Anna Park
- Metabolic Regulation Research Center, KRIBB, Daejeon 34141, Korea
| | - Da Som Lee
- Metabolic Regulation Research Center, KRIBB, Daejeon 34141, Korea
| | - Baek Soo Han
- Metabolic Regulation Research Center, KRIBB; Department of Functional Genomics, University of Science and Technology (UST), Daejeon 34141, Korea
| | - Sang Chul Lee
- Metabolic Regulation Research Center, KRIBB; Department of Functional Genomics, University of Science and Technology (UST), Daejeon 34141, Korea
| | - Kwang-Hee Bae
- Metabolic Regulation Research Center, KRIBB; Department of Functional Genomics, University of Science and Technology (UST), Daejeon 34141, Korea
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Son MJ, Kim WK, Park A, Oh KJ, Kim JH, Han BS, Kim IC, Chi SW, Park SG, Lee SC, Bae KH. Set7/9, a methyltransferase, regulates the thermogenic program during brown adipocyte differentiation through the modulation of p53 acetylation. Mol Cell Endocrinol 2016; 431:46-53. [PMID: 27132805 DOI: 10.1016/j.mce.2016.04.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 04/25/2016] [Accepted: 04/27/2016] [Indexed: 01/03/2023]
Abstract
Brown adipose tissue, which is mainly composed of brown adipocytes, plays a key role in the regulation of energy balance via dissipation of extra energy as heat, and consequently counteracts obesity and its associated-disorders. Therefore, brown adipocyte differentiation should be tightly controlled at the multiple regulation steps. Among these, the regulation at the level of post-translational modifications (PTMs) is largely unknown. Here, we investigated the changes in the expression level of the enzymes involved in protein lysine methylation during brown adipocyte differentiation by using quantitative real-time PCR (qPCR) array analysis. Several enzymes showing differential expression patterns were identified. In particular, the expression level of methyltransferase Set7/9 was dramatically repressed during brown adipocyte differentiation. Although there was no significant change in lipid accumulation, ectopic expression of Set7/9 led to enhanced expression of several key thermogenic genes, such as uncoupling protein-1 (UCP-1), Cidea, peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α), and PR domain containing 16 (PRDM16). In contrast, knockdown of endogenous Set7/9 led to significantly reduced expression of these thermogenic genes. Furthermore, suppressed mitochondrial DNA content and decreased oxygen consumption rate were also detected upon Set7/9 knockdown. We found that p53 acetylation was regulated by Set7/9-dependent interaction with Sirt1. Based on these results, we suggest that Set7/9 acts as a fine regulator of the thermogenic program during brown adipocyte differentiation by regulation of p53 acetylation. Thus, Set7/9 could be used as a valuable target for regulating thermogenic capacity and consequently to overcome obesity and its related metabolic diseases.
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Affiliation(s)
- Min Jeong Son
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea
| | - Won Kon Kim
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea; Department of Functional Genomics, University of Science and Technology (UST) of Korea, Daejeon 305-806, Republic of Korea
| | - Anna Park
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea
| | - Kyoung-Jin Oh
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea
| | - Jeong-Hoon Kim
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea; Department of Functional Genomics, University of Science and Technology (UST) of Korea, Daejeon 305-806, Republic of Korea
| | - Baek Soo Han
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea; Department of Functional Genomics, University of Science and Technology (UST) of Korea, Daejeon 305-806, Republic of Korea
| | - Il Chul Kim
- Department of Biological Sciences, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Seung-Wook Chi
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea
| | - Sung Goo Park
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea; Department of Functional Genomics, University of Science and Technology (UST) of Korea, Daejeon 305-806, Republic of Korea
| | - Sang Chul Lee
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea; Department of Functional Genomics, University of Science and Technology (UST) of Korea, Daejeon 305-806, Republic of Korea.
| | - Kwang-Hee Bae
- Metabolic Regulation Research Center, Division of BioMedical Sciences, KRIBB, Daejeon 305-806, Republic of Korea; Department of Functional Genomics, University of Science and Technology (UST) of Korea, Daejeon 305-806, Republic of Korea.
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Kim EY, Kim WK, Oh KJ, Han BS, Lee SC, Bae KH. Recent advances in proteomic studies of adipose tissues and adipocytes. Int J Mol Sci 2015; 16:4581-99. [PMID: 25734986 PMCID: PMC4394436 DOI: 10.3390/ijms16034581] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 12/29/2014] [Accepted: 02/16/2015] [Indexed: 12/27/2022] Open
Abstract
Obesity is a chronic disease that is associated with significantly increased levels of risk of a number of metabolic disorders. Despite these enhanced health risks, the worldwide prevalence of obesity has increased dramatically over the past few decades. Obesity is caused by the accumulation of an abnormal amount of body fat in adipose tissue, which is composed mostly of adipocytes. Thus, a deeper understanding of the regulation mechanism of adipose tissue and/or adipocytes can provide a clue for overcoming obesity-related metabolic diseases. In this review, we describe recent advances in the study of adipose tissue and/or adipocytes, focusing on proteomic approaches. In addition, we suggest future research directions for proteomic studies which may lead to novel treatments of obesity and obesity-related diseases.
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Affiliation(s)
- Eun Young Kim
- Functional Genomics Research Center, KRIBB, Daejeon 305-806, Korea.
| | - Won Kon Kim
- Functional Genomics Research Center, KRIBB, Daejeon 305-806, Korea.
- Department of Functional Genomics, University of Science and Technology of Korea, Daejeon 305-806, Korea.
| | - Kyoung-Jin Oh
- Functional Genomics Research Center, KRIBB, Daejeon 305-806, Korea.
| | - Baek Soo Han
- Functional Genomics Research Center, KRIBB, Daejeon 305-806, Korea.
- Department of Functional Genomics, University of Science and Technology of Korea, Daejeon 305-806, Korea.
| | - Sang Chul Lee
- Functional Genomics Research Center, KRIBB, Daejeon 305-806, Korea.
- Department of Functional Genomics, University of Science and Technology of Korea, Daejeon 305-806, Korea.
| | - Kwang-Hee Bae
- Functional Genomics Research Center, KRIBB, Daejeon 305-806, Korea.
- Department of Functional Genomics, University of Science and Technology of Korea, Daejeon 305-806, Korea.
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Choi HR, Kim WK, Kim EY, Han BS, Min JK, Chi SW, Park SG, Bae KH, Lee SC. Dual-specificity phosphatase 10 controls brown adipocyte differentiation by modulating the phosphorylation of p38 mitogen-activated protein kinase. PLoS One 2013; 8:e72340. [PMID: 23977283 PMCID: PMC3748012 DOI: 10.1371/journal.pone.0072340] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 07/09/2013] [Indexed: 11/23/2022] Open
Abstract
Background Brown adipocytes play an important role in regulating the balance of energy, and as such, there is a strong correlation between obesity and the amount of brown adipose tissue. Although the molecular mechanism underlying white adipocyte differentiation has been well characterized, brown adipocyte differentiation has not been studied extensively. Here, we investigate the potential role of dual-specificity phosphatase 10 (DUSP10) in brown adipocyte differentiation using primary brown preadipocytes. Methods and Results The expression of DUSP10 increased continuously after the brown adipocyte differentiation of mouse primary brown preadipocytes, whereas the phosphorylation of p38 was significantly upregulated at an early stage of differentiation followed by steep downregulation. The overexpression of DUSP10 induced a decrease in the level of p38 phosphorylation, resulting in lower lipid accumulation than that in cells overexpressing the inactive mutant DUSP10. The expression levels of several brown adipocyte markers such as PGC-1α, UCP1, and PRDM16 were also significantly reduced upon the ectopic expression of DUSP10. Furthermore, decreased mitochondrial DNA content was detected in cells expressing DUSP10. The results obtained upon treatment with the p38 inhibitor, SB203580, clearly indicated that the phosphorylation of p38 at an early stage is important in brown adipocyte differentiation. The effect of the p38 inhibitor was partially recovered by DUSP10 knockdown using RNAi. Conclusions These results suggest that p38 phosphorylation is controlled by DUSP10 expression. Furthermore, p38 phosphorylation at an early stage is critical in brown adipocyte differentiation. Thus, the regulation of DUSP10 activity affects the efficiency of brown adipogenesis. Consequently, DUSP10 can be used as a novel target protein for the regulation of obesity.
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Affiliation(s)
- Hye-Ryung Choi
- Research Center for Integrated Cellulomics, KRIBB, Daejeon, Republic of Korea
| | - Won Kon Kim
- Research Center for Integrated Cellulomics, KRIBB, Daejeon, Republic of Korea
| | - Eun Young Kim
- Research Center for Integrated Cellulomics, KRIBB, Daejeon, Republic of Korea
| | - Baek Soo Han
- Research Center for Integrated Cellulomics, KRIBB, Daejeon, Republic of Korea
- Department of Functional Genomics, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Jeong-Ki Min
- Research Center for Integrated Cellulomics, KRIBB, Daejeon, Republic of Korea
- Department of Functional Genomics, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Seung-Wook Chi
- Biomedical Proteomics Research Center, KRIBB, Daejeon, Republic of Korea
| | - Sung Goo Park
- Biomedical Proteomics Research Center, KRIBB, Daejeon, Republic of Korea
| | - Kwang-Hee Bae
- Research Center for Integrated Cellulomics, KRIBB, Daejeon, Republic of Korea
- Department of Functional Genomics, University of Science and Technology (UST), Daejeon, Republic of Korea
- * E-mail: (KHB); (SCL)
| | - Sang Chul Lee
- Research Center for Integrated Cellulomics, KRIBB, Daejeon, Republic of Korea
- Department of Functional Genomics, University of Science and Technology (UST), Daejeon, Republic of Korea
- * E-mail: (KHB); (SCL)
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