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Nulali J, Zhan M, Zhang K, Tu P, Liu Y, Song H. Osteoglycin: An ECM Factor Regulating Fibrosis and Tumorigenesis. Biomolecules 2022; 12:1674. [PMID: 36421687 PMCID: PMC9687868 DOI: 10.3390/biom12111674] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/04/2022] [Accepted: 11/10/2022] [Indexed: 08/27/2023] Open
Abstract
The extracellular matrix (ECM) is made up of noncellular components that have special properties for influencing cell behavior and tissue structure. Small leucine-rich proteoglycans (SLRPs) are nonfibrillar ECM components that serve as structural scaffolds and signaling molecules. osteoglycin (OGN), a class III SLRP, is a ubiquitous ECM component that not only helps to organize the extracellular matrix but also regulates a number of important biological processes. As a glycosylated protein in the ECM, OGN was originally considered to be involved in fiber assembly and was reported to have a connection with fibrosis. In addition to these functions, OGN is found in a variety of cancer tissues and is implicated in cellular processes linked to tumorigenesis, including cell proliferation, invasion, metastasis, and epithelial-mesenchymal transition (EMT). In this review, we summarize the structure and functions of OGN as well as its biological and clinical importance in the context of fibrotic illness and tumorigenesis. This review aims to improve our understanding of OGN and provide some new strategies for the treatment of fibrosis and cancer.
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Affiliation(s)
- Jiayida Nulali
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics and Endocrinology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Ming Zhan
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics and Endocrinology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Kaiwen Zhang
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics and Endocrinology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Pinghui Tu
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics and Endocrinology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Yu Liu
- Department of Respiration, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200070, China
| | - Huaidong Song
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics and Endocrinology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
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Qin W, Zhang J, Rong R, Zhang L, Gao H, Liu C, Ren Q, Zheng G, Wang J, Meng L, Qiao S, Qian R, Zhou C, Wang H, Zhang Y. Osteoglycin (OGN) promotes tumorigenesis of pancreatic cancer cell via targeting ID4. Tissue Cell 2022; 78:101867. [DOI: 10.1016/j.tice.2022.101867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 07/11/2022] [Accepted: 07/14/2022] [Indexed: 12/01/2022]
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Su B, Zhang QY, Li XS, Yu HM, Li P, Ma JH, Cao HM, Sun F, Zhao SX, Zheng CX, Ru Y, Song HD. The expression of mimecan in adrenal tissue plays a role in an organism's responses to stress. Aging (Albany NY) 2021; 13:13087-13107. [PMID: 33971622 PMCID: PMC8148509 DOI: 10.18632/aging.202991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/02/2021] [Indexed: 01/07/2023]
Abstract
Mimecan encodes a secretory protein that is secreted into the human serum as two mature proteins with molecular masses of 25 and 12 kDa. We found 12-kDa mimecan to be a novel satiety hormone mediated by the upregulation of the expression of interleukin (IL)-1β and IL-6 in the hypothalamus. Mimecan was found to be expressed in human pituitary corticotroph cells and was up-regulated by glucocorticoids, while the secretion of adrenocorticotropic hormone (ACTH) in pituitary corticotroph AtT-20 cells was induced by mimecan. However, the effects of mimecan in adrenal tissue on the hypothalamic–pituitary–adrenal (HPA) axis functions remain unknown. We demonstrated that the expression of mimecan in adrenal tissues is significantly downregulated by hypoglycemia and scalded stress. It was down-regulated by ACTH, but upregulated by glucocorticoids through in vivo and in vitro studies. We further found that 12-kDa mimecan fused protein increased the corticosterone secretion of adrenal cells in vivo and in vitro. Interestingly, compared to litter-mate mice, the diurnal rhythm of corticosterone secretion was disrupted under basal conditions, and the response to restraint stress was stronger in mimecan knockout mice. These findings suggest that mimecan stimulates corticosterone secretion in the adrenal tissues under basal conditions; however, the down-regulated expression of mimecan by increased ACTH secretion after stress in adrenal tissues might play a role in maintaining the homeostasis of an organism’s responses to stress.
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Affiliation(s)
- Bin Su
- Department of Blood Transfusion and Endocrinology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Qian-Yue Zhang
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostic and Endocrinology, Shanghai Ninth People's Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao tong University School of Medicine, Shanghai 200011, China
| | - Xue-Song Li
- Department of Endocrine Metabolism, Minhang Hospital, Fudan University, Shanghai 201199, China
| | - Hui-Min Yu
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostic and Endocrinology, Shanghai Ninth People's Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao tong University School of Medicine, Shanghai 200011, China
| | - Ping Li
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostic and Endocrinology, Shanghai Ninth People's Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao tong University School of Medicine, Shanghai 200011, China
| | - Jun-Hua Ma
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostic and Endocrinology, Shanghai Ninth People's Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao tong University School of Medicine, Shanghai 200011, China
| | - Huang-Ming Cao
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostic and Endocrinology, Shanghai Ninth People's Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao tong University School of Medicine, Shanghai 200011, China
| | - Fei Sun
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostic and Endocrinology, Shanghai Ninth People's Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao tong University School of Medicine, Shanghai 200011, China
| | - Shuang-Xia Zhao
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostic and Endocrinology, Shanghai Ninth People's Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao tong University School of Medicine, Shanghai 200011, China
| | - Cui-Xia Zheng
- Department of Respiration, Yangpu Hospital, Tongji University, Shanghai 200090, China
| | - Ying Ru
- Department of Endocrinology and Metabolism, Anhui Provincial Hospital, The First Affiliated Hospital of University of Science and Technology of China, Hefei 230001, Anhui, China.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Huai-Dong Song
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostic and Endocrinology, Shanghai Ninth People's Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao tong University School of Medicine, Shanghai 200011, China
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A Proteomic Study for the Discovery of Beef Tenderness Biomarkers and Prediction of Warner-Bratzler Shear Force Measured on Longissimus thoracis Muscles of Young Limousin-Sired Bulls. Foods 2021; 10:foods10050952. [PMID: 33925360 PMCID: PMC8145402 DOI: 10.3390/foods10050952] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 04/21/2021] [Accepted: 04/23/2021] [Indexed: 12/14/2022] Open
Abstract
Beef tenderness is of central importance in determining consumers’ overall liking. To better understand the underlying mechanisms of tenderness and be able to predict it, this study aimed to apply a proteomics approach on the Longissimus thoracis (LT) muscle of young Limousin-sired bulls to identify candidate protein biomarkers. A total of 34 proteins showed differential abundance between the tender and tough groups. These proteins belong to biological pathways related to muscle structure, energy metabolism, heat shock proteins, response to oxidative stress, and apoptosis. Twenty-three putative protein biomarkers or their isoforms had previously been identified as beef tenderness biomarkers, while eleven were novel. Using regression analysis to predict shear force values, MYOZ3 (Myozenin 3), BIN1 (Bridging Integrator-1), and OGN (Mimecan) were the major proteins retained in the regression model, together explaining 79% of the variability. The results of this study confirmed the existing knowledge but also offered new insights enriching the previous biomarkers of tenderness proposed for Longissimus muscle.
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de Oliveira G, Freire PP, Omoto ACM, Cury SS, Fuziwara CS, Kimura ET, Dal-Pai-Silva M, Carvalho RF. Osteoglycin post-transcriptional regulation by miR-155 induces cellular architecture changes in H9c2 cardiomyoblasts. Gene 2018; 676:9-15. [PMID: 29990505 DOI: 10.1016/j.gene.2018.07.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 07/01/2018] [Accepted: 07/06/2018] [Indexed: 01/20/2023]
Abstract
Several studies have demonstrated dysregulated cardiac microRNAs (miRNAs) following cardiac stress and development of cardiac hypertrophy and failure. miRNAs are also differentially expressed in the inflammation that occurs in heart failure and, among these inflammatory-related miRNAs, the miR-155 has been implicated in the regulation of cardiac hypertrophy. Despite these data showing the role of miRNA-155 in cardiomyocyte hypertrophy under a hypertrophic stimulus, it is also important to understand the endogenous regulation of this miRNA without a hypertrophic stimulus to fully appreciate its function in this cell type. The first aim of the present study was to determine whether, without a hypertrophic stimulus, miR-155 overexpression induces H9c2 cardiac cells hypertrophy in vitro. The second objective was to determine whether osteoglycin (Ogn), a key regulator of heart mass in rats, mice, and humans, is post-transcriptionally regulated by miR-155 with a potential role in inducing H9c2 cells hypertrophy. Here, we show that, without a hypertrophic stimulus, miR-155 significantly repressed Ogn protein levels, but induce neither alteration in morphological phenotype nor in the expression of the molecular markers that fully characterize pathological hypertrophy of H9c2 cells. However, most importantly, Ogn silencing in H9c2 cells mimicked the effects of miR-155 overexpression in inducing cellular architecture changes that were characterized by a transition of the cell shape from fusiform to rounded. This is a new role of the post-transcriptional regulation of Ogn by miR-155 in the maintenance of the cardiac cell morphology in physiological and pathological conditions.
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Affiliation(s)
- Grasieli de Oliveira
- Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Paula Paccielli Freire
- Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Ana Carolina Mieko Omoto
- Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Sarah Santiloni Cury
- Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Cesar Seigi Fuziwara
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Edna Teruko Kimura
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Maeli Dal-Pai-Silva
- Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Robson Francisco Carvalho
- Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil.
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Freire PP, Cury SS, de Oliveira G, Fernandez GJ, Moraes LN, da Silva Duran BO, Ferreira JH, Fuziwara CS, Kimura ET, Dal-Pai-Silva M, Carvalho RF. Osteoglycin inhibition by microRNA miR-155 impairs myogenesis. PLoS One 2017; 12:e0188464. [PMID: 29161332 PMCID: PMC5697837 DOI: 10.1371/journal.pone.0188464] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 11/07/2017] [Indexed: 01/22/2023] Open
Abstract
Skeletal myogenesis is a regulated process in which mononucleated cells, the myoblasts, undergo proliferation and differentiation. Upon differentiation, the cells align with each other, and subsequently fuse to form terminally differentiated multinucleated myotubes. Previous reports have identified the protein osteoglycin (Ogn) as an important component of the skeletal muscle secretome, which is expressed differentially during muscle development. However, the posttranscriptional regulation of Ogn by microRNAs during myogenesis is unknown. Bioinformatic analysis showed that miR-155 potentially targeted the Ogn transcript at the 3´-untranslated region (3´ UTR). In this study, we tested the hypothesis that miR-155 inhibits the expression of the Ogn to regulate skeletal myogenesis. C2C12 myoblast cells were cultured and miR-155 overexpression or Ogn knockdown was induced by transfection with miR-155 mimic, siRNA-Ogn, and negative controls with lipofectamine for 15 hours. Near confluence (80–90%), myoblasts were induced to differentiate myotubes in a differentiation medium. Luciferase assay was used to confirm the interaction between miR-155 and Ogn 3’UTR. RT-qPCR and Western blot analyses were used to confirm that the differential expression of miR-155 correlates with the differential expression of myogenic molecular markers (Myh2, MyoD, and MyoG) and inhibits Ogn protein and gene expression in myoblasts and myotubes. Myoblast migration and proliferation were assessed using Wound Healing and MTT assays. Our results show that miR-155 interacts with the 3’UTR Ogn region and decrease the levels of Ogn in myotubes. The overexpression of miR-155 increased MyoG expression, decreased myoblasts wound closure rate, and decreased Myh2 expression in myotubes. Moreover, Ogn knockdown reduced the expression levels of MyoD, MyoG, and Myh2 in myotubes. These results reveal a novel pathway in which miR-155 inhibits Ogn expression to regulate proliferation and differentiation of C2C12 myoblast cells.
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Affiliation(s)
- Paula Paccielli Freire
- Department of Morphology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Sarah Santiloni Cury
- Department of Morphology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Grasieli de Oliveira
- Department of Morphology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Geysson Javier Fernandez
- Department of Morphology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Leonardo Nazario Moraes
- Department of Morphology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | | | - Juarez Henrique Ferreira
- Department of Morphology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - César Seigi Fuziwara
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Edna Teruko Kimura
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Maeli Dal-Pai-Silva
- Department of Morphology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Robson Francisco Carvalho
- Department of Morphology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
- * E-mail:
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Tanaka KI, Kanazawa I, Kaji H, Sugimoto T. Association of osteoglycin and FAM5C with bone turnover markers, bone mineral density, and vertebral fractures in postmenopausal women with type 2 diabetes mellitus. Bone 2017; 95:5-10. [PMID: 27836731 DOI: 10.1016/j.bone.2016.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 10/18/2016] [Accepted: 11/06/2016] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Accumulating evidence suggests a reciprocal relationship between muscle and bone. Previous in vitro studies showed that the muscle-derived factors, osteoglycin (OGN) and family with sequence similarity 5, member C (FAM5C), regulate osteoblastic differentiation. However, there are no reports investigating the association between circulating OGN and FAM5C and bone metabolism in humans. DESIGN We conducted a cross-sectional study and investigated the association of serum OGN and FAM5C levels and muscle mass examined by whole-body dual-energy x-ray absorptiometry with bone mineral density (BMD), bone turnover markers, and the presence of vertebral fractures (VFs) in 156 postmenopausal women with type 2 diabetes mellitus (T2DM). RESULTS Multiple regression analysis adjusted for age, duration of T2DM, body mass index, serum creatinine, and log(hemoglobin A1c) showed that log(OGN) was negatively associated with BMD at the femoral neck (β=-0.17, p=0.014). Serum OGN levels were higher in subjects with VFs than in those without VFs [mean±standard deviation (SD): 100.2±84.7 vs. 74.4±31.7pg/mL, p=0.013]. Moreover, logistic regression analysis adjusted for the confounding factors described above showed that the serum OGN level was positively associated with the presence of VFs (odds ratio=1.84, 95% confidence interval=1.03-3.29 per SD increase, p=0.039). In contrast, neither the serum FAM5C level nor muscle mass indices were associated with bone turnover markers and the presence of VFs. CONCLUSIONS The present study showed for the first time that higher serum OGN levels were associated with decreased BMD and increased risk of vertebral fractures in postmenopausal women with T2DM.
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Affiliation(s)
- Ken-Ichiro Tanaka
- Department of Internal Medicine 1, Shimane University Faculty of Medicine, Izumo 693-8501, Japan.
| | - Ippei Kanazawa
- Department of Internal Medicine 1, Shimane University Faculty of Medicine, Izumo 693-8501, Japan.
| | - Hiroshi Kaji
- Department of Physiology and Regenerative Medicine, Kinki University Faculty of Medicine, Osaka 589-8511, Japan.
| | - Toshitsugu Sugimoto
- Department of Internal Medicine 1, Shimane University Faculty of Medicine, Izumo 693-8501, Japan.
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Wu QH, Ma Y, Ruan CC, Yang Y, Liu XH, Ge Q, Kong LR, Zhang JW, Yan C, Gao PJ. Loss of osteoglycin promotes angiogenesis in limb ischaemia mouse models via modulation of vascular endothelial growth factor and vascular endothelial growth factor receptor 2 signalling pathway. Cardiovasc Res 2016; 113:70-80. [DOI: 10.1093/cvr/cvw220] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 08/29/2016] [Accepted: 09/21/2016] [Indexed: 01/22/2023] Open
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Deckx S, Heymans S, Papageorgiou AP. The diverse functions of osteoglycin: a deceitful dwarf, or a master regulator of disease? FASEB J 2016; 30:2651-61. [PMID: 27080639 DOI: 10.1096/fj.201500096r] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 04/05/2016] [Indexed: 12/21/2022]
Abstract
Small leucine-rich proteoglycans are emerging as important regulatory proteins within the extracellular matrix, where they exert both structural and nonstructural functions and hence are modulators of numerous biological processes, such as inflammation, fibrosis, and cell proliferation. One proteoglycan in particular, osteoglycin (OGN), also known as mimecan, shows great structural and functional diversity in normal physiology and in disease states, therefore making it a very interesting candidate for the development of novel therapeutic strategies. Unfortunately, the literature on OGN is confusing, as it has different names, and different transcript and protein variants have been identified. This review will give a clear overview of the different structures and functions of OGN that have been identified to date, portray its central role in pathophysiology, and highlight the importance of posttranslational processing, such as glycosylation, for the diversity of its functions.-Deckx, S., Heymans, S., Papageorgiou, A.-P. The diverse functions of osteoglycin: a deceitful dwarf, or a master regulator of disease?
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Affiliation(s)
- Sophie Deckx
- Department of Cardiology, Maastricht University, Maastricht, The Netherlands; and Center for Molecular and Vascular Biology, Katholieke Universiteit (KU) Leuven, Leuven, Belgium
| | - Stephane Heymans
- Department of Cardiology, Maastricht University, Maastricht, The Netherlands; and Center for Molecular and Vascular Biology, Katholieke Universiteit (KU) Leuven, Leuven, Belgium
| | - Anna-Pia Papageorgiou
- Department of Cardiology, Maastricht University, Maastricht, The Netherlands; and Center for Molecular and Vascular Biology, Katholieke Universiteit (KU) Leuven, Leuven, Belgium
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Mimecan, a Hormone Abundantly Expressed in Adipose Tissue, Reduced Food Intake Independently of Leptin Signaling. EBioMedicine 2015; 2:1718-24. [PMID: 26870797 PMCID: PMC4740298 DOI: 10.1016/j.ebiom.2015.09.044] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 09/16/2015] [Accepted: 09/25/2015] [Indexed: 01/29/2023] Open
Abstract
Adipokines such as leptin play important roles in the regulation of energy metabolism, particularly in the control of appetite. Here, we describe a hormone, mimecan, which is abundantly expressed in adipose tissue. Mimecan was observed to inhibit food intake and reduce body weight in mice. Intraperitoneal injection of a mimecan-maltose binding protein (-MBP) complex inhibited food intake in C57BL/6J mice, which was attenuated by pretreatment with polyclonal antibody against mimecan. Notably, mimecan-MBP also induced anorexia in Ay/a and db/db mice. Furthermore, the expression of interleukin (IL)-1β and IL-6 was up-regulated in the hypothalamus by mimecan-MBP, as well as in N9 microglia cells by recombinant mouse mimecan. Taken together, the results suggest that mimecan is a satiety hormone in adipose tissue, and that mimecan inhibits food intake independently of leptin signaling by inducing IL-1β and IL-6 expression in the hypothalamus.
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Van Aelst LN, Voss S, Carai P, Van Leeuwen R, Vanhoutte D, Sanders-van Wijk S, Eurlings L, Swinnen M, Verheyen FK, Verbeken E, Nef H, Troidl C, Cook SA, Brunner-La Rocca HP, Möllmann H, Papageorgiou AP, Heymans S. Osteoglycin Prevents Cardiac Dilatation and Dysfunction After Myocardial Infarction Through Infarct Collagen Strengthening. Circ Res 2015; 116:425-36. [DOI: 10.1161/circresaha.116.304599] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rationale:
To maintain cardiac mechanical and structural integrity after an ischemic insult, profound alterations occur within the extracellular matrix. Osteoglycin is a small leucine-rich proteoglycan previously described as a marker of cardiac hypertrophy.
Objective:
To establish whether osteoglycin may play a role in cardiac integrity and function after myocardial infarction (MI).
Methods and Results:
Osteoglycin expression is associated with collagen deposition and scar formation in mouse and human MI. Absence of osteoglycin in mice resulted in significantly increased rupture-related mortality with tissue disruption, intramyocardial bleeding, and increased cardiac dysfunction, despite equal infarct sizes. Surviving osteoglycin null mice had greater infarct expansion in comparison with wild-type mice because of impaired collagen fibrillogenesis and maturation in the infarcts as revealed by electron microscopy and collagen polarization. Absence of osteoglycin did not affect cardiomyocyte hypertrophy in the remodeling remote myocardium. In cultured fibroblasts, osteoglycin knockdown or supplementation did not alter transforming growth factor-β signaling. Adenoviral overexpression of osteoglycin in wild-type mice significantly improved collagen quality, thereby blunting cardiac dilatation and dysfunction after MI. In osteoglycin null mice, adenoviral overexpression of osteoglycin was unable to prevent rupture-related mortality because of insufficiently restoring osteoglycin protein levels in the heart. Finally, circulating osteoglycin levels in patients with heart failure were significantly increased in the patients with a previous history of MI compared with those with nonischemic heart failure and correlated with survival, left ventricular volumes, and other markers of fibrosis.
Conclusions:
Increased osteoglycin expression in the infarct scar promotes proper collagen maturation and protects against cardiac disruption and adverse remodeling after MI. In human heart failure, osteoglycin is a promising biomarker for ischemic heart failure.
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Affiliation(s)
- Lucas N.L. Van Aelst
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Sandra Voss
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Paolo Carai
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Rick Van Leeuwen
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Davy Vanhoutte
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Sandra Sanders-van Wijk
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Luc Eurlings
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Melissa Swinnen
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Fons K. Verheyen
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Eric Verbeken
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Holger Nef
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Christian Troidl
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Stuart A. Cook
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Hans-Peter Brunner-La Rocca
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Helge Möllmann
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Anna-Pia Papageorgiou
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
| | - Stephane Heymans
- From the Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, Catholic University of Leuven, Leuven, Belgium (L.N.L.V.A., P.C., A.-P.P., S.H.); Department of Cardiology (L.N.L.V.A., M.S.) and Department of Pathology (E.V.), University Hospitals Leuven, Leuven, Belgium; Department of Cardiology, Kerckhoff Heart Center, Bad Nauheim, Germany (S.V., H.N., C.T., H.M.); Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), University Hospital
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12
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Li L, Zhang Z, Wang C, Miao L, Zhang J, Wang J, Jiao B, Zhao S. Quantitative proteomics approach to screening of potential diagnostic and therapeutic targets for laryngeal carcinoma. PLoS One 2014; 9:e90181. [PMID: 24587265 PMCID: PMC3937387 DOI: 10.1371/journal.pone.0090181] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 01/28/2014] [Indexed: 12/31/2022] Open
Abstract
To discover candidate biomarkers for diagnosis and detection of human laryngeal carcinoma and explore possible mechanisms of this cancer carcinogenesis, two-dimensional strong cation-exchange/reversed-phase nano-scale liquid chromatography/mass spectrometry analysis was used to identify differentially expressed proteins between the laryngeal carcinoma tissue and the adjacent normal tissue. As a result, 281 proteins with significant difference in expression were identified, and four differential proteins, Profilin-1 (PFN1), Nucleolin (NCL), Cytosolic non-specific dipeptidase (CNDP2) and Mimecan (OGN) with different subcellular localization were selectively validated. Semiquantitative RT-PCR and Western blotting were performed to detect the expression of the four proteins employing a large collection of human laryngeal carcinoma tissues, and the results validated the differentially expressed proteins identified by the proteomics. Furthermore, we knocked down PFN1 in immortalized human laryngeal squamous cell line Hep-2 cells and then the proliferation and metastasis of these transfected cells were measured. The results showed that PFN1 silencing inhibited the proliferation and affected the migration ability of Hep-2 cells, providing some new insights into the pathogenesis of PFN1 in laryngeal carcinoma. Altogether, our present data first time show that PFN1, NCL, CNDP2 and OGN are novel potential biomarkers for diagnosis and therapeutic targets for laryngeal carcinoma, and PFN1 is involved in the metastasis of laryngeal carcinoma.
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Affiliation(s)
- Li Li
- Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Zhenwei Zhang
- Department of Biochemistry and Molecular Biology, Second Military Medical University, Shanghai, China
- Key Laboratory of Liver Disease, Center of Infectious Diseases, Guangzhou 458 Hospital, Guangzhou, China
| | - Chengyu Wang
- Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Lei Miao
- Department of Pharmacology, School of Pharmacy and Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jianpeng Zhang
- Department of Biochemistry and Molecular Biology, Second Military Medical University, Shanghai, China
- * E-mail: (BJ); (SZ); (JZ)
| | - Jiasen Wang
- Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Binghua Jiao
- Department of Biochemistry and Molecular Biology, Second Military Medical University, Shanghai, China
- * E-mail: (BJ); (SZ); (JZ)
| | - Shuwei Zhao
- Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
- * E-mail: (BJ); (SZ); (JZ)
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13
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Jiang H, Ye XP, Yang ZY, Zhan M, Wang HN, Cao HM, Xie HJ, Pan CM, Song HD, Zhao SX. Aldosterone directly affects apelin expression and secretion in adipocytes. J Mol Endocrinol 2013; 51:37-48. [PMID: 23549407 DOI: 10.1530/jme-13-0025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
There is a high incidence of metabolic syndrome among patients with primary aldosteronism (PA), which has recently been associated with an unfavorable cardiometabolic profile. However, the underlying mechanisms have not been clarified in detail. Characterizing aldosterone (Ald) target genes in adipocytes will help us to elucidate the deleterious effects associated with excess Ald. Apelin, a novel adipokine, exerts beneficial effects on obesity-associated disorders and cardiovascular homeostasis. The objective of this study was to investigate the effects of high Ald levels on apelin expression and secretion and the underlying mechanisms involved in adipocytes. In vivo, a single-dose Ald injection acutely decreased apelin serum levels and adipose tissue apelin production, which demonstrates a clear inverse relationship between the levels of plasma Ald and plasma apelin. Experiments using 3T3-L1 adipocytes showed that Ald decreased apelin expression and secretion in a time- and dose-dependent manner. This effect was reversed by glucocorticoid receptor (GR) antagonists or GR (NR3C1) knockdown; furthermore, putative HREs were identified in the apelin promoter. Subsequently, we verified that both glucocorticoids and mineralocorticoids regulated apelin expression through GR activation, although no synergistic effect was observed. Additionally, detailed potential mechanisms involved a p38 MAPK signaling pathway. In conclusion, our findings strengthen the fact that there is a direct interaction between Ald and apelin in adipocytes, which has important implications for hyperaldosteronism or PA-associated cardiometabolic syndrome and hoists apelin on the list of potent therapeutic targets for PA.
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Affiliation(s)
- He Jiang
- State Key Laboratory of Medical Genomics, Shanghai Institute of Endocrinology and Metabolism, Molecular Medicine Center, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
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14
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The mechanism of mimecan transcription induced by glucocorticoid in pituitary corticotroph cells. Mol Cell Biochem 2011; 360:321-8. [DOI: 10.1007/s11010-011-1071-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 09/08/2011] [Indexed: 10/17/2022]
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15
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Page RB, Boley MA, Smith JJ, Putta S, Voss SR. Microarray analysis of a salamander hopeful monster reveals transcriptional signatures of paedomorphic brain development. BMC Evol Biol 2010; 10:199. [PMID: 20584293 PMCID: PMC2900274 DOI: 10.1186/1471-2148-10-199] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Accepted: 06/28/2010] [Indexed: 11/12/2022] Open
Abstract
Background The Mexican axolotl (Ambystoma mexicanum) is considered a hopeful monster because it exhibits an adaptive and derived mode of development - paedomorphosis - that has evolved rapidly and independently among tiger salamanders. Unlike related tiger salamanders that undergo metamorphosis, axolotls retain larval morphological traits into adulthood and thus present an adult body plan that differs dramatically from the ancestral (metamorphic) form. The basis of paedomorphic development was investigated by comparing temporal patterns of gene transcription between axolotl and tiger salamander larvae (Ambystoma tigrinum tigrinum) that typically undergo a metamorphosis. Results Transcript abundances from whole brain and pituitary were estimated via microarray analysis on four different days post hatching (42, 56, 70, 84 dph) and regression modeling was used to independently identify genes that were differentially expressed as a function of time in both species. Collectively, more differentially expressed genes (DEGs) were identified as unique to the axolotl (n = 76) and tiger salamander (n = 292) than were identified as shared (n = 108). All but two of the shared DEGs exhibited the same temporal pattern of expression and the unique genes tended to show greater changes later in the larval period when tiger salamander larvae were undergoing anatomical metamorphosis. A second, complementary analysis that directly compared the expression of 1320 genes between the species identified 409 genes that differed as a function of species or the interaction between time and species. Of these 409 DEGs, 84% exhibited higher abundances in tiger salamander larvae at all sampling times. Conclusions Many of the unique tiger salamander transcriptional responses are probably associated with metamorphic biological processes. However, the axolotl also showed unique patterns of transcription early in development. In particular, the axolotl showed a genome-wide reduction in mRNA abundance across loci, including genes that regulate hypothalamic-pituitary activities. This suggests that an axolotls failure to undergo anatomical metamorphosis late in the larval period is indirectly associated with a mechanism(s) that acts earlier in development to broadly program transcription. The axolotl hopeful monster provides a model to identify mechanisms of early brain development that proximally and ultimately affect the expression of adult phenotypes.
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Affiliation(s)
- Robert B Page
- Department of Biology and Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY 40506, USA
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16
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Ma QY, Zuo CL, Ma JH, Zhang XN, Ru Y, Li P, Pan CM, Liu Z, Cao HM, Chen MD, Song HD. Glucocorticoid up-regulates mimecan expression in corticotroph cells. Mol Cell Endocrinol 2010; 321:239-44. [PMID: 20178827 DOI: 10.1016/j.mce.2010.02.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Revised: 02/15/2010] [Accepted: 02/16/2010] [Indexed: 11/25/2022]
Abstract
Mimecan is a protein of unknown function that is expressed in the pituitary. The aim of this study is to clarify the regulation and intracellular localisation of mimecan gene expression in the pituitary. With immunohistochemistry, we observed that mimecan protein was co-expressed with ACTH in pituitary corticotroph cells. Northern and Western blot analyses revealed that mimecan expression and secretion in corticotroph cells were up-regulated by treating AtT-20 cells with glucocorticoid. Meanwhile, mimecan expression in rat primary culture pituitary cells was also promoted by glucocorticoid. Co-incubation of AtT-20 cells with RU486 and glucocorticoid completely reversed the induction of mimecan gene expression by glucocorticoid. In addition, luciferase reporter assays showed that the -1474/+43 promoter region of mimecan was sufficient for glucocorticoid-responsive mimecan expression. These data collectively suggest that mimecan expressed in pituitary corticotroph cells is increased by glucocorticoid and that the up-regulation may be mediated by the classical GR pathways.
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Affiliation(s)
- Qin-Yun Ma
- Ruijin Hospital, Shanghai Institute of Endocrinology, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University (SJTU) School of Medicine, Shanghai, China
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17
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Zhou JY, Petritis BO, Petritis K, Norbeck AD, Weitz KK, Moore RJ, Camp DG, Kulkarni RN, Smith RD, Qian WJ. Mouse-specific tandem IgY7-SuperMix immunoaffinity separations for improved LC-MS/MS coverage of the plasma proteome. J Proteome Res 2010; 8:5387-95. [PMID: 19722698 DOI: 10.1021/pr900564f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We report on a mouse specific SuperMix immunoaffinity separation system for separating low-abundance proteins from high and moderate abundance proteins in mouse plasma. When applied in tandem with a mouse IgY7 column that removes the seven most abundant proteins in plasma, the SuperMix column captures more than 100 additional moderate abundance proteins, thus allowing significant enrichment of low-abundance proteins in the flow-through fraction. A side-by-side comparison of results obtained from 2D-LC-MS/MS analyses of flow-through samples from IgY7 and SuperMix columns revealed a nearly 2-fold improvement in the overall proteome coverage. Detection of low-abundance proteins was also enhanced, as evidenced by a more than 2-fold increase in the coverage of cytokines, growth factors, and other low-abundance proteins. Moreover, the tandem separations are automated, reproducible, and allow effective identification of protein abundance differences from LC-MS/MS analyses. Considering the overall reproducibility and increased sensitivity using the IgY7-SuperMix separation system, we anticipate broad applications of this strategy for biomarker discovery using mouse models.
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Affiliation(s)
- Jian-Ying Zhou
- Biological Science Division and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
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18
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Wang Y, Ma Y, Lü B, Xu E, Huang Q, Lai M. Differential expression of mimecan and thioredoxin domain-containing protein 5 in colorectal adenoma and cancer: a proteomic study. Exp Biol Med (Maywood) 2007; 232:1152-9. [PMID: 17895523 DOI: 10.3181/0701-rm-8] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Adenoma is the major precursor lesion of colorectal cancer, one of the most common cancers worldwide. The elucidation of the molecular mechanism underlying adenoma is essential for early detection, prevention, and intervention of colorectal cancer. Using a combination of two-dimensional gel electrophoresis and mass spectrometry, we identified 27 differentially expressed proteins in adenoma, compared with matched normal mucosa and cancer tissue. Seventeen proteins were upregulated and six downregulated in adenoma when compared with the same proteins in individual-matched normal mucosa. Four were downregulated, but none upregulated in adenoma when compared with the same proteins in matched cancer tissue. Two novel proteins, mimecan and thioredoxin domain-containing protein 5 (TXNDC5), were further validated by Western blot in 8 colorectal adenomas and 19 cancers that were matched with normal mucosa. All adenoma and cancer tissues did not express mimecan, but all normal mucosa did (P < 0.01). In contrast, TXNDC5 was significantly upregulated in colorectal adenoma and cancer tissues as compared with that in normal mucosa (P < 0.05). This study clearly demonstrated that absence of mimecan and upregulation of TXNDC5 are involved in the early development of colorectal cancer. Thus, the differentially expressed proteins might serve as potential biomarkers for colorectal cancer detection and intervention.
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Affiliation(s)
- Yinghong Wang
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, 310058, China
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Pan Q, Luo X, Chegini N. Genomic and proteomic profiling I: leiomyomas in African Americans and Caucasians. Reprod Biol Endocrinol 2007; 5:34. [PMID: 17716379 PMCID: PMC2063502 DOI: 10.1186/1477-7827-5-34] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2007] [Accepted: 08/23/2007] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Clinical observations indicate that leiomyomas occur more frequently in African Americans compared to other ethnic groups with unknown etiology. To identify the molecular basis for the difference we compared leiomyomas form A. Americans with Caucasians using genomic and proteomic strategies. METHODS Microarray, realtime PCR, 2D-PAGE, mass spectrometry, Western blotting and immunohistochemistry. RESULTS Using Affymetrix U133A array and analysis based on P ranking (P < 0.01) 1470 genes were identified as differentially expressed in leiomyomas compared to myometrium regardless of ethnicity. Of these, 268 genes were either over-expressed (177 genes) or under-expressed (91 genes) based on P < 0.01 followed by 2-fold cutoff selection in leiomyomas of A. Americans as compared to Caucasians. Among them, the expression E2F1, RUNX3, EGR3, TBPIP, ECM2, ESM1, THBS1, GAS1, ADAM17, CST6, CST7, FBLN5, ICAM2, EDN1 and COL18 was validated using realtime PCR low-density arrays. 2D PAGE coupled with image analysis identified 332 protein spots of which the density/volume of 31 varied by greater than or equal to 1.5 fold in leiomyomas as compared to myometrium. The density/volume of 34 protein-spots varied by greater than or equal to 1.5 fold (26 increased and 8 decreased) in leiomyomas of A. Americans as compared to Caucasians. Tandem mass spectrometric analysis of 15 protein spots identified several proteins whose transcripts were also identified by microarray, including 14-3-3 beta and mimecan, whose expression was confirmed using western blotting and immunohistochemistry. CONCLUSION These findings imply that the level rather than the ethnic-specific expression of a number of genes and proteins may account for the difference between leiomyomas and possibly myometrium, in A. Americans and Caucasians. Further study using larger sample size is required to confirm these findings.
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Affiliation(s)
- Qun Pan
- Department of Obstetrics and Gynecology, University of Florida, Gainesville, Florida 32610, USA
| | - Xiaoping Luo
- Department of Obstetrics and Gynecology, University of Florida, Gainesville, Florida 32610, USA
| | - Nasser Chegini
- Department of Obstetrics and Gynecology, University of Florida, Gainesville, Florida 32610, USA
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Current World Literature. Curr Opin Oncol 2007; 19:65-9. [PMID: 17133115 DOI: 10.1097/cco.0b013e328012d5fa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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