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Yang H, Wang W, Liu H, Zhang C, Cao Y, Long L, Han X, Wang Y, Yan F, Li G, Zhu M, Jin L, Fan Z. miR615-3p inhibited FBLN1 and osteogenic differentiation of umbilical cord mesenchymal stem cells by associated with YTHDF2 in a m 6A-miRNA interaction manner. Cell Prolif 2024; 57:e13607. [PMID: 38353178 DOI: 10.1111/cpr.13607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/09/2024] [Accepted: 01/27/2024] [Indexed: 06/06/2024] Open
Abstract
To investigate the role and mechanism of FBLN1 in the osteogenic differentiation and bone regeneration by using umbilical cord mesenchymal stem cells (WJCMSCs). We found that FBLN1 promoted osteogenic differentiation of WJCMSCs and WJCMSC-mediated bone regeneration. It was showed that there was an m6A methylation site in 3'UTR of FBLN1 mRNA, and the mutation of the m6A site enhanced the stability of FBLN1 mRNA, subsequently fostering the FBLN1 enhanced osteogenic differentiation of WJCMSCs. YTHDF2 was identified as capable of recognizing and binding to the m6A site, consequently inducing FBLN1 instability and repressed the osteogenic differentiation of WJCMSCs. Meanwhile, miR-615-3p negatively regulated FBLN1 by binding FBLN1 3'UTR and inhibited the osteogenic differentiation of WJCMSCs and WJCMSC-mediated bone regeneration. Then, we discovered miR-615-3p was found to regulate the functions of FBLN1 facilitated by YTHDF2 through an m6A-miRNA regulation mechanism. We demonstrated that FBLN1 is critical for regulating the osteogenic differentiation potentials of WJCMSCs and have identified that miR615-3p mediated the decay of FBLN1 mRNA which facilitated by m6A reading protein YTHDF2. This provided a novel m6A-miRNA epigenetic regulatory pattern for MSC regulation and bone regeneration.
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Affiliation(s)
- Haoqing Yang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Wanqing Wang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Huina Liu
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Chen Zhang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Yangyang Cao
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Lujue Long
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Xiao Han
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Yuejun Wang
- Department of General Dentistry and Integrated Emergency Dental Care, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Fei Yan
- Xiangya Stomatological Hospital and School of Stomatology, Central South University, Changsha, China
| | - Guoqing Li
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Mengyuan Zhu
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Luyuan Jin
- Department of General Dentistry and Integrated Emergency Dental Care, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Zhipeng Fan
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
- Beijing Laboratory of Oral Health, Capital Medical University, Beijing, China
- Research Unit of Tooth Development and Regeneration, Chinese Academy of Medical Sciences, Beijing, China
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Krishnan A, Waheed SO, Varghese A, Cherilakkudy FH, Schofield CJ, Karabencheva-Christova TG. Unusual catalytic strategy by non-heme Fe(ii)/2-oxoglutarate-dependent aspartyl hydroxylase AspH. Chem Sci 2024; 15:3466-3484. [PMID: 38455014 PMCID: PMC10915816 DOI: 10.1039/d3sc05974j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 02/02/2024] [Indexed: 03/09/2024] Open
Abstract
Biocatalytic C-H oxidation reactions are of important synthetic utility, provide a sustainable route for selective synthesis of important organic molecules, and are an integral part of fundamental cell processes. The multidomain non-heme Fe(ii)/2-oxoglutarate (2OG) dependent oxygenase AspH catalyzes stereoselective (3R)-hydroxylation of aspartyl- and asparaginyl-residues. Unusually, compared to other 2OG hydroxylases, crystallography has shown that AspH lacks the carboxylate residue of the characteristic two-His-one-Asp/Glu Fe-binding triad. Instead, AspH has a water molecule that coordinates Fe(ii) in the coordination position usually occupied by the Asp/Glu carboxylate. Molecular dynamics (MD) and quantum mechanics/molecular mechanics (QM/MM) studies reveal that the iron coordinating water is stabilized by hydrogen bonding with a second coordination sphere (SCS) carboxylate residue Asp721, an arrangement that helps maintain the six coordinated Fe(ii) distorted octahedral coordination geometry and enable catalysis. AspH catalysis follows a dioxygen activation-hydrogen atom transfer (HAT)-rebound hydroxylation mechanism, unusually exhibiting higher activation energy for rebound hydroxylation than for HAT, indicating that the rebound step may be rate-limiting. The HAT step, along with substrate positioning modulated by the non-covalent interactions with SCS residues (Arg688, Arg686, Lys666, Asp721, and Gln664), are essential in determining stereoselectivity, which likely proceeds with retention of configuration. The tetratricopeptide repeat (TPR) domain of AspH influences substrate binding and manifests dynamic motions during catalysis, an observation of interest with respect to other 2OG oxygenases with TPR domains. The results provide unique insights into how non-heme Fe(ii) oxygenases can effectively catalyze stereoselective hydroxylation using only two enzyme-derived Fe-ligating residues, potentially guiding enzyme engineering for stereoselective biocatalysis, thus advancing the development of non-heme Fe(ii) based biomimetic C-H oxidation catalysts, and supporting the proposal that the 2OG oxygenase superfamily may be larger than once perceived.
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Affiliation(s)
- Anandhu Krishnan
- Department of Chemistry, Michigan Technological University Houghton MI 49931 USA
| | - Sodiq O Waheed
- Department of Chemistry, Michigan Technological University Houghton MI 49931 USA
| | - Ann Varghese
- Department of Chemistry, Michigan Technological University Houghton MI 49931 USA
| | | | - Christopher J Schofield
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford OX1 3TA Oxford UK
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3
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Zheng X, Liu L, Liu J, Zhang C, Zhang J, Qi Y, Xie L, Zhang C, Yao G, Bu P. Fibulin7 Mediated Pathological Cardiac Remodeling through EGFR Binding and EGFR-Dependent FAK/AKT Signaling Activation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2207631. [PMID: 37344348 PMCID: PMC10460860 DOI: 10.1002/advs.202207631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 05/19/2023] [Indexed: 06/23/2023]
Abstract
Adverse remodeling after myocardial infarction (MI) result in heart failure and sudden cardiac death. Fibulin7 (FBLN7) is an adhesion protein excreted into the extracellular matrix that functions in multiple biological processes. However, whether and how FBLN7 affects post-MI cardiac remodeling remains unclear. Here, the authors identify FBLN7 as a critical profibrotic regulator of adverse cardiac remodeling. They observe significantly upregulated serum FBLN7 levels in MI patients with left ventricular remodeling compared to those without MI. Microarray dataset analysis reveal FBLN7 is upregulated in human heart samples from patients with dilated and hypertrophic cardiomyopathy compared with non-failing hearts. The authors demonstrate that FBLN7 deletion attenuated post-MI cardiac remodeling, leading to better cardiac function and reduced myocardial fibrosis, whereas overexpression of FBLN7 results in the opposite effects. Mechanistically, FBLN7 binds to the epidermal growth factor receptor (EGFR) through its EGF-like domain, together with the EGF-like calcium-binding domain, and induces EGFR autophosphorylation at tyrosine (Y) 1068 and Y1173, which activates downstream focal adhesion kinase/AKT signaling, thereby leading to fibroblast-to-myofibroblast transdifferentiation. In addition, FBLN7-EGFR mediates this signal transduction, and the fibrotic response is effectively suppressed by the inhibition of EGFR activity. Taken together, FBLN7 plays an important role in cardiac remodeling and fibrosis after MI.
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Affiliation(s)
- Xuehui Zheng
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
| | - Lingxin Liu
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
| | - Jing Liu
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
- Department of CardiologyHeze Municipal HospitalHeze274000China
| | - Chen Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
| | - Jie Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
| | - Yan Qi
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
| | - Lin Xie
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
| | - Chunmei Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
| | - Guoqing Yao
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
| | - Peili Bu
- The Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineDepartment of CardiologyQilu HospitalCheeloo College of MedicineShandong UniversityJinan250012China
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Yokoyama U, Oka S, Saito J. Molecular mechanisms regulating extracellular matrix-mediated remodeling in the ductus arteriosus. Semin Perinatol 2023; 47:151716. [PMID: 36906477 DOI: 10.1016/j.semperi.2023.151716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
Abstract
Progressive remodeling throughout the fetal and postnatal period is essential for anatomical closure of the ductus arteriosus (DA). Internal elastic lamina interruption and subendothelial region widening, elastic fiber formation impairment in the tunica media, and intimal thickening are distinctive features of the fetal DA. After birth, the DA undergoes further extracellular matrix-mediated remodeling. Based on the knowledge obtained from mouse models and human disease, recent studies revealed a molecular mechanism of DA remodeling. In this review, we focus on matrix remodeling and regulation of cell migration/proliferation associated with DA anatomical closure and discuss the role of prostaglandin E receptor 4 (EP4) signaling and jagged1-Notch signaling as well as myocardin, vimentin, and secretory components including tissue plasminogen activator, versican, lysyl oxidase, and bone morphogenetic proteins 9 and 10.
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Affiliation(s)
- Utako Yokoyama
- Department of Physiology, Tokyo Medical University, Shinjuku 6-1-1, Shinjuku-ku, Tokyo, Japan 160-8402.
| | - Sayuki Oka
- Department of Physiology, Tokyo Medical University, Shinjuku 6-1-1, Shinjuku-ku, Tokyo, Japan 160-8402
| | - Junichi Saito
- Department of Physiology, Tokyo Medical University, Shinjuku 6-1-1, Shinjuku-ku, Tokyo, Japan 160-8402
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Brewitz L, Onisko BC, Schofield CJ. Combined proteomic and biochemical analyses redefine the consensus sequence requirement for epidermal growth factor-like domain hydroxylation. J Biol Chem 2022; 298:102129. [PMID: 35700824 PMCID: PMC9293771 DOI: 10.1016/j.jbc.2022.102129] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 11/16/2022] Open
Abstract
Epidermal growth factor-like domains (EGFDs) have important functions in cell-cell signaling. Both secreted and cell surface human EGFDs are subject to extensive modifications, including aspartate and asparagine residue C3-hydroxylations catalyzed by the 2-oxoglutarate oxygenase aspartate/asparagine-β-hydroxylase (AspH). Although genetic studies show AspH is important in human biology, studies on its physiological roles have been limited by incomplete knowledge of its substrates. Here, we redefine the consensus sequence requirements for AspH-catalyzed EGFD hydroxylation based on combined analysis of proteomic mass spectrometric data and mass spectrometry-based assays with isolated AspH and peptide substrates. We provide cellular and biochemical evidence that the preferred site of EGFD hydroxylation is embedded within a disulfide-bridged macrocycle formed of 10 amino acid residues. This definition enabled the identification of previously unassigned hydroxylation sites in three EGFDs of human fibulins as AspH substrates. A non-EGFD containing protein, lymphocyte antigen-6/plasminogen activator urokinase receptor domain containing protein 6B (LYPD6B) was shown to be a substrate for isolated AspH, but we did not observe evidence for LYPD6B hydroxylation in cells. AspH-catalyzed hydroxylation of fibulins is of particular interest given their important roles in extracellular matrix dynamics. In conclusion, these results lead to a revision of the consensus substrate requirements for AspH and expand the range of observed and potential AspH-catalyzed hydroxylation in cells, which will enable future study of the biological roles of AspH.
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Affiliation(s)
- Lennart Brewitz
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, United Kingdom.
| | | | - Christopher J Schofield
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Oxford, United Kingdom.
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6
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Luo M, Yan D, Liang X, Huang Y, Luo P, Yang Z, Zhang Y, Xu T, Gao S, Zhang L, Zhou Y, Shi Q, Zhang C, Ruan L. Association Between Plasma Fibulin-1 and Brachial-Ankle Pulse Wave Velocity in Arterial Stiffness. Front Cardiovasc Med 2022; 9:837490. [PMID: 35872882 PMCID: PMC9302601 DOI: 10.3389/fcvm.2022.837490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 06/09/2022] [Indexed: 11/13/2022] Open
Abstract
Arterial stiffness forms the basis of cardiovascular diseases (CVD) and is also an independent predictor of CVD risk. Early detection and intervention of arterial stiffness are important for improving the global burden of CVD. Pulse wave velocity (PWV) is the gold standard for assessing arterial stiffness and the molecular mechanism of arterial stiffness remains to be studied. Extracellular matrix (ECM) remodeling is one of the major mechanisms of arterial stiffness. Partial quantitative changes of ECM proteins can be detected in plasma. Therefore, we examined the hypothesis that a discovery proteomic comparison of plasma proteins between high arterial stiffness (baPWV ≥ 1,400 cm/s) and normal arterial stiffness (baPWV < 1,400 cm/s) populations might identify relevant changed ECM proteins for arterial stiffness. Plasma samples were randomly selected from normal arterial stiffness (n = 6) and high arterial stiffness (n = 6) people. Isobaric tags for relative and absolute quantitation (iTRAQ) based quantitative proteomics technique was performed to find a total of 169 differentially expressed proteins (DEPs). Nine ECM proteins were included in all DEPs and were all up-regulated proteins. Fibulin-1 had the highest statistically fold-change (FC = 3.7, p < 0.0001) in the high arterial stiffness population compared with the control group during the nine ECM proteins. The expression of plasma fibulin-1 in normal arterial stiffness (n = 112) and high arterial stiffness (n = 72) populations was confirmed through enzyme-linked immunosorbent assay (ELISA). Similarly, ELISA results showed that plasma concentrations of fibulin-1 in the high arterial stiffness group were higher than those in the normal arterial stiffness group (12.69 ± 0.89 vs. 9.84 ± 0.71 μg/ml, p < 0.05). Univariate analysis of fibulin-1 with brachial-ankle pulse wave velocity (baPWV) indicated that fibulin-1 was positively correlated with baPWV in all participants (r = 0.32, p < 0.01) and a stronger positive correlation between baPWV and fibulin-1 in high arterial stiffness group (r = 0.64, p < 0.0001) was found. Multiple regression analysis of factors affecting baPWV showed that fibulin-1 was also a significant determinant of the increased ba-PWV (R2 = 0.635, p = 0.001). Partial correlation analysis showed that baPWV increased with the growth of plasma fibulin-1(r = 0.267, p < 0.001). In conclusion, our results demonstrated that fibulin-1 is positively correlated with ba-PWV and an independent risk factor for arterial stiffness.
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Affiliation(s)
- Mandi Luo
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dan Yan
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaolu Liang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Huang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Pengcheng Luo
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhen Yang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yucong Zhang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ting Xu
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shangbang Gao
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Sciences and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Le Zhang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yiwu Zhou
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qing Shi
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cuntai Zhang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Cuntai Zhang ;
| | - Lei Ruan
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Lei Ruan
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7
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Tsai YC, Hung WW, Chang WA, Wu PH, Wu LY, Lee SC, Kuo MC, Hsu YL. Autocrine Exosomal Fibulin-1 as a Target of MiR-1269b Induces Epithelial–Mesenchymal Transition in Proximal Tubule in Diabetic Nephropathy. Front Cell Dev Biol 2021; 9:789716. [PMID: 34977033 PMCID: PMC8718747 DOI: 10.3389/fcell.2021.789716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/18/2021] [Indexed: 11/25/2022] Open
Abstract
Background: Diabetic nephropathy (DN) is an increasing threat to human health and is regarded to be the leading cause of end-stage renal disease worldwide. Exosomes deliver biomolecule massages and may play a key role in cell communication and the progression of DN. Methods: A cross-disciplinary study, including in vivo, in vitro, and human studies, was conducted to explore the cross-talk within proximal tubular epithelial cells (PTECs) in DN. Exosomal protein from PTECs treated with high glucose (HG) was purified and examined using liquid chromatography–tandem mass spectrometry (LC-MS/MS). Next-generation sequencing (NGS) was utilized to analyze RNAs extracted from PTECs from a type 2 diabetic patient and a normal individual. HK-2 cells were used to assess exosomal protein and its modulation and biofunction in DN. Normal individuals and type 2 diabetic patients were enrolled, and nondiabetic db/m mice and diabetic db/db mice were used to validate the molecular mechanism of exosomes in DN. Results: HG stimulated PTECs to increase Fibulin-1 (FBLN1) expression, and PTECs secreted FBLN1 through exosome delivery, thereby inducing epithelial–mesenchymal transition (EMT) in PTECs. Transcriptome analysis found that FBLN1 expression was modulated by miR-1269b, which was downregulated by HG in HK-2 cells. While transfection of miR-1269b reversed FBLN1-mediated EMT in PTECs, miR-1269b inhibitor modulated the phenotype of PTECs toward mesenchymal type under normal glucose (NG) condition. Most importantly, urinary FBLN1 and exosomal miR-1269b levels were correlated with the severity of kidney injury in type 2 diabetic patients. Conclusion: This study demonstrated the communication within PTECs through exosome transmission in an autocrine pattern. MiR-1269b–FBLN1 epigenetic regulatory network could be a potential therapeutic strategy to prevent the progression of DN.
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Affiliation(s)
- Yi-Chun Tsai
- School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Division of General Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Division of Nephrology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
- Center for Liquid Biopsy and Cohort Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wei-Wen Hung
- Division of Endocrinology and Metabolism, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wei-An Chang
- Division of Pulmonary and Critical Care Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ping-Hsun Wu
- School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Division of Nephrology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ling-Yu Wu
- College of Medicine, Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Su-Chu Lee
- Division of Nephrology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Mei-Chuan Kuo
- Division of Nephrology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ya-Ling Hsu
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
- College of Medicine, Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- *Correspondence: Ya-Ling Hsu,
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8
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Ito S, Yokoyama U. [A new therapeutic target for patent ductus arteriosus]. Nihon Yakurigaku Zasshi 2021; 156:359-363. [PMID: 34719570 DOI: 10.1254/fpj.21061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The ductus arteriosus (DA) maintains the fetal circulation by connecting the aorta and pulmonary arteries. Patent ductus arteriosus (PDA) occurs in >70% extremely-low-birth-weight infants. Patients with PDA exhibit circulatory failure, which is caused by left-to-right shunt. The DA immediately contracts after birth in response to the elevation of blood oxygen tension and to the decline in circulating prostaglandin E2 (PGE2). Cyclooxygenase inhibitors targeting smooth muscle cell (SMC) contraction represent only pharmacological treatment for PDA. However, it is important for DA anatomical closure that intimal thickening (IT) is appropriately formed between SMC layer and endothelial cells (EC). IT begins to form before the second-trimester and becomes prominent toward the end of third-trimester as an increase in placenta-derived PGE2. Immature DAs frequently fail to be close due to poorly formed IT. IT consists of extracellular matrices (ECM) and migrated DA-SMCs from the tunica media. A glycoprotein fibulin-1 is expressed in developing cardiovascular system and binds to multiple ECMs. We found that PGE2 increased fibulin-1 via EP4 in DA-SMCs, and Fbln1-deficient mice exhibited PDA with poor IT formation. Although EP4 is a Gs-coupled GPCR, fibulin-1 was secreted from DA-SMCs through the phospholipase C-protein kinase C-non-canonical NFκB signaling pathway. Fibulin-1 bound to DA-EC-derived versican which is a binding partner of hyaluronan, which promoted directional DA-SMC migration toward ECs and contributed to IT formation in the DA. Fibulin-1 upregulation by the activation of specific downstream pathway of EP4 may serve a new pharmacological strategy for PDA.
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Affiliation(s)
- Satoko Ito
- Department of Physiology, Tokyo Medical University
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9
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van der Ploeg EA, Melgert BN, Burgess JK, Gan CT. The potential of biomarkers of fibrosis in chronic lung allograft dysfunction. Transplant Rev (Orlando) 2021; 35:100626. [PMID: 33992914 DOI: 10.1016/j.trre.2021.100626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 04/30/2021] [Accepted: 05/01/2021] [Indexed: 11/27/2022]
Abstract
Chronic lung allograft dysfunction (CLAD) is the major long-term cause of morbidity and mortality after lung transplantation. Both bronchiolitis obliterans syndrome and restrictive lung allograft syndrome, two main types of CLAD, lead to fibrosis in either the small airways or alveoli and pleura. Pathological pathways in CLAD and other types of fibrosis, for example idiopathic pulmonary fibrosis, are assumed to overlap and therefore fibrosis biomarkers could aid in the early detection of CLAD. These biomarkers could help to differentiate between different phenotypes of CLAD and could, in comparison to biomarkers of inflammation, possibly distinguish an infectious event from CLAD when a decline in lung function is present. This review gives an overview of known CLAD specific biomarkers, describes new promising fibrosis biomarkers currently investigated in other types of fibrosis, and discusses the possible use of these fibrosis biomarkers for CLAD.
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Affiliation(s)
- Eline A van der Ploeg
- University of Groningen, University Medical Centre Groningen, Department of Pulmonary Medicine, PO Box 30. 001, 9700, RB, Groningen, the Netherlands.
| | - Barbro N Melgert
- University of Groningen, Department of Molecular Pharmacology, Groningen Research Institute of Pharmacy, PO box 196, 9700, AD, Groningen, the Netherlands; University of Groningen, University Medical Centre Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, PO Box 30.001, 9700, RB, Groningen, the Netherlands.
| | - Janette K Burgess
- University of Groningen, University Medical Centre Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, PO Box 30.001, 9700, RB, Groningen, the Netherlands; University of Groningen, University Medical Centre Groningen, Department of Pathology and Medical Biology, PO Box 30.001, 9700, RB, Groningen, the Netherlands.
| | - C Tji Gan
- University of Groningen, University Medical Centre Groningen, Department of Pulmonary Medicine, PO Box 30. 001, 9700, RB, Groningen, the Netherlands.
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10
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Ozols M, Eckersley A, Mellody KT, Mallikarjun V, Warwood S, O'Cualain R, Knight D, Watson REB, Griffiths CEM, Swift J, Sherratt MJ. Peptide location fingerprinting reveals modification-associated biomarker candidates of ageing in human tissue proteomes. Aging Cell 2021; 20:e13355. [PMID: 33830638 PMCID: PMC8135079 DOI: 10.1111/acel.13355] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 02/18/2021] [Accepted: 03/15/2021] [Indexed: 12/25/2022] Open
Abstract
Although dysfunctional protein homeostasis (proteostasis) is a key factor in many age-related diseases, the untargeted identification of structurally modified proteins remains challenging. Peptide location fingerprinting is a proteomic analysis technique capable of identifying structural modification-associated differences in mass spectrometry (MS) data sets of complex biological samples. A new webtool (Manchester Peptide Location Fingerprinter), applied to photoaged and intrinsically aged skin proteomes, can relatively quantify peptides and map statistically significant differences to regions within protein structures. New photoageing biomarker candidates were identified in multiple pathways including extracellular matrix organisation (collagens and proteoglycans), protein synthesis and folding (ribosomal proteins and TRiC complex subunits), cornification (keratins) and hemidesmosome assembly (plectin and integrin α6β4). Crucially, peptide location fingerprinting uniquely identified 120 protein biomarker candidates in the dermis and 71 in the epidermis which were modified as a consequence of photoageing but did not differ significantly in relative abundance (measured by MS1 ion intensity). By applying peptide location fingerprinting to published MS data sets, (identifying biomarker candidates including collagen V and versican in ageing tendon) we demonstrate the potential of the MPLF webtool for biomarker discovery.
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Affiliation(s)
- Matiss Ozols
- Division of Cell Matrix Biology & Regenerative Medicine The University of Manchester Manchester UK
| | - Alexander Eckersley
- Division of Cell Matrix Biology & Regenerative Medicine The University of Manchester Manchester UK
| | - Kieran T. Mellody
- Division of Musculoskeletal & Dermatological Sciences The University of Manchester Manchester UK
| | - Venkatesh Mallikarjun
- Division of Cell Matrix Biology & Regenerative Medicine The University of Manchester Manchester UK
- Wellcome Centre for Cell‐Matrix Research The University of Manchester Manchester UK
| | - Stacey Warwood
- Division of Cell Matrix Biology & Regenerative Medicine The University of Manchester Manchester UK
- Biological Mass Spectrometry Core Research Facility School of Biological Sciences Faculty of Biology, Medicine and Health The University of Manchester Manchester UK
| | - Ronan O'Cualain
- Division of Cell Matrix Biology & Regenerative Medicine The University of Manchester Manchester UK
- Biological Mass Spectrometry Core Research Facility School of Biological Sciences Faculty of Biology, Medicine and Health The University of Manchester Manchester UK
| | - David Knight
- Division of Cell Matrix Biology & Regenerative Medicine The University of Manchester Manchester UK
- Biological Mass Spectrometry Core Research Facility School of Biological Sciences Faculty of Biology, Medicine and Health The University of Manchester Manchester UK
| | - Rachel E. B. Watson
- Division of Musculoskeletal & Dermatological Sciences The University of Manchester Manchester UK
- NIHR Manchester Biomedical Research CentreCentral Manchester University Hospitals NHS Foundation TrustManchester Academic Health Science Centre Manchester UK
| | - Christopher E. M. Griffiths
- Division of Musculoskeletal & Dermatological Sciences The University of Manchester Manchester UK
- NIHR Manchester Biomedical Research CentreCentral Manchester University Hospitals NHS Foundation TrustManchester Academic Health Science Centre Manchester UK
| | - Joe Swift
- Division of Cell Matrix Biology & Regenerative Medicine The University of Manchester Manchester UK
- Wellcome Centre for Cell‐Matrix Research The University of Manchester Manchester UK
| | - Michael J. Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine The University of Manchester Manchester UK
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11
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A preliminary study: is fibulin 1 a friend or an enemy that needs to be silenced with siRNAs for mesothelioma? Contemp Oncol (Pozn) 2021; 24:241-246. [PMID: 33531871 PMCID: PMC7836276 DOI: 10.5114/wo.2020.102826] [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: 08/30/2020] [Accepted: 10/22/2020] [Indexed: 01/22/2023] Open
Abstract
Introduction The impaired balance between cell proliferation and cell death, followed the inability to receive the death signals, cells push towards the neoplasia pathway. Fibulin 1 (FBLN1) plays a role as a co-factor in the mechanism of action of a protease such as a disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS-1), which has important roles in angiogenesis, can also act as both tumor suppressor gene (TSG) and an oncogene in the main constituent of the extra-cellular matrix. This preliminary study has investigated the effects of silencing FBLN1 with siRNA on autophagy, proliferation, apoptosis pathways in the MSM cell line. Material and methods It was transfected siRNA specific to FBLN1 incubated MSM SPC212 cells, and compared with negative control siRNAs by a real-time polymerase chain reaction. It was determined apoptosis, proliferation, autophagy-related genes in mRNA levels. Results It was observed that increased anti-apoptosis genes, such as CASP2, CASP7, DDFA, and BCL2, anti-apoptotic gene, reduced APAF1, CASP8. Proliferation induced through while increased ADAMTS1, CDH1, CDH6, CLDN7, CSF3, MMP7, MMP13 genes. Autophagy increased via increasing MAP1LC3B, ATG-16L1 genes while decreased via suppressed ULK1, and ATG7 genes by silencing FBLN1 with siRNAs (p < 0.05). Conclusions Proliferation can be induction with silencing of FBLN1 with siRNA in processing mechanism MSM. It was concluded that FBLN1 could be act as pleiotropic on autophagy, and apoptosis pathways in proliferation processing for MSM. Therefore we think that FBLN1 acts like a TSG. FBLN1 can be considered as a targeted treatment option in advanced stage MSM.
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12
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Norris EG, Dalecki D, Hocking DC. Using Acoustic Fields to Fabricate ECM-Based Biomaterials for Regenerative Medicine Applications. RECENT PROGRESS IN MATERIALS 2020; 2:1-24. [PMID: 33604591 PMCID: PMC7889011 DOI: 10.21926/rpm.2003018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Ultrasound is emerging as a promising tool for both characterizing and fabricating engineered biomaterials. Ultrasound-based technologies offer a diverse toolbox with outstanding capacity for optimization and customization within a variety of therapeutic contexts, including improved extracellular matrix-based materials for regenerative medicine applications. Non-invasive ultrasound fabrication tools include the use of thermal and mechanical effects of acoustic waves to modify the structure and function of extracellular matrix scaffolds both directly, and indirectly via biochemical and cellular mediators. Materials derived from components of native extracellular matrix are an essential component of engineered biomaterials designed to stimulate cell and tissue functions and repair or replace injured tissues. Thus, continued investigations into biological and acoustic mechanisms by which ultrasound can be used to manipulate extracellular matrix components within three-dimensional hydrogels hold much potential to enable the production of improved biomaterials for clinical and research applications.
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Affiliation(s)
- Emma G Norris
- Department of Pharmacology and Physiology, University of Rochester, Rochester, New York, USA
| | - Diane Dalecki
- Department of Biomedical Engineering, University of Rochester, Rochester, New York, USA
| | - Denise C Hocking
- Department of Pharmacology and Physiology, University of Rochester, Rochester, New York, USA
- Department of Biomedical Engineering, University of Rochester, Rochester, New York, USA
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13
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Ito S, Yokoyama U, Nakakoji T, Cooley MA, Sasaki T, Hatano S, Kato Y, Saito J, Nicho N, Iwasaki S, Umemura M, Fujita T, Masuda M, Asou T, Ishikawa Y. Fibulin-1 Integrates Subendothelial Extracellular Matrices and Contributes to Anatomical Closure of the Ductus Arteriosus. Arterioscler Thromb Vasc Biol 2020; 40:2212-2226. [PMID: 32640908 PMCID: PMC7447190 DOI: 10.1161/atvbaha.120.314729] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVE The ductus arteriosus (DA) is a fetal artery connecting the aorta and pulmonary arteries. Progressive matrix remodeling, that is, intimal thickening (IT), occurs in the subendothelial region of DA to bring anatomic DA closure. IT is comprised of multiple ECMs (extracellular matrices) and migrated smooth muscle cells (SMCs). Because glycoprotein fibulin-1 binds to multiple ECMs and regulates morphogenesis during development, we investigated the role of fibulin-1 in DA closure. Approach and Results: Fibulin-1-deficient (Fbln1-/-) mice exhibited patent DA with hypoplastic IT. An unbiased transcriptome analysis revealed that EP4 (prostaglandin E receptor 4) stimulation markedly increased fibulin-1 in DA-SMCs via phospholipase C-NFκB (nuclear factor κB) signaling pathways. Fluorescence-activated cell sorting (FACS) analysis demonstrated that fibulin-1 binding protein versican was derived from DA-endothelial cells (ECs). We examined the effect of fibulin-1 on directional migration toward ECs in association with versican by using cocultured DA-SMCs and ECs. EP4 stimulation promoted directional DA-SMC migration toward ECs, which was attenuated by either silencing fibulin-1 or versican. Immunofluorescence demonstrated that fibulin-1 and versican V0/V1 were coexpressed at the IT of wild-type DA, whereas 30% of versican-deleted mice lacking a hyaluronan binding site displayed patent DA. Fibulin-1 expression was attenuated in the EP4-deficient mouse (Ptger4-/-) DA, which exhibits patent DA with hypoplastic IT, and fibulin-1 protein administration restored IT formation. In human DA, fibulin-1 and versican were abundantly expressed in SMCs and ECs, respectively. CONCLUSIONS Fibulin-1 contributes to DA closure by forming an environment favoring directional SMC migration toward the subendothelial region, at least, in part, in combination with EC-derived versican and its binding partner hyaluronan.
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Affiliation(s)
- Satoko Ito
- From the Cardiovascular Research Institute (S.I., U.Y., T.N., J.S., N.N., M.U., T.F., Y.I.), Yokohama City University, Japan.,Department of Physiology, Tokyo Medical University, Japan (S.I., U.Y., Y.K., J.S.)
| | - Utako Yokoyama
- From the Cardiovascular Research Institute (S.I., U.Y., T.N., J.S., N.N., M.U., T.F., Y.I.), Yokohama City University, Japan.,Department of Physiology, Tokyo Medical University, Japan (S.I., U.Y., Y.K., J.S.)
| | - Taichi Nakakoji
- From the Cardiovascular Research Institute (S.I., U.Y., T.N., J.S., N.N., M.U., T.F., Y.I.), Yokohama City University, Japan
| | - Marion A Cooley
- Department of Oral Biology and Diagnostic Sciences, Augusta University, GA (M.A.C.)
| | - Takako Sasaki
- Department of Biochemistry II, Oita University, Japan (T.S.)
| | - Sonoko Hatano
- Institute for Molecular Science of Medicine, Aichi Medical University, Japan (S.H.)
| | - Yuko Kato
- Department of Physiology, Tokyo Medical University, Japan (S.I., U.Y., Y.K., J.S.)
| | - Junichi Saito
- From the Cardiovascular Research Institute (S.I., U.Y., T.N., J.S., N.N., M.U., T.F., Y.I.), Yokohama City University, Japan.,Department of Physiology, Tokyo Medical University, Japan (S.I., U.Y., Y.K., J.S.)
| | - Naoki Nicho
- From the Cardiovascular Research Institute (S.I., U.Y., T.N., J.S., N.N., M.U., T.F., Y.I.), Yokohama City University, Japan
| | - Shiho Iwasaki
- Department of Pediatrics (S.I.), Yokohama City University, Japan
| | - Masanari Umemura
- From the Cardiovascular Research Institute (S.I., U.Y., T.N., J.S., N.N., M.U., T.F., Y.I.), Yokohama City University, Japan
| | - Takayuki Fujita
- From the Cardiovascular Research Institute (S.I., U.Y., T.N., J.S., N.N., M.U., T.F., Y.I.), Yokohama City University, Japan
| | - Munetaka Masuda
- Department of Surgery (M.M.), Yokohama City University, Japan
| | - Toshihide Asou
- Department of Cardiovascular Surgery, Kanagawa Children's Medical Center, Yokohama, Japan (T.A.)
| | - Yoshihiro Ishikawa
- From the Cardiovascular Research Institute (S.I., U.Y., T.N., J.S., N.N., M.U., T.F., Y.I.), Yokohama City University, Japan
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14
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MacDonald JA, Takai Y, Ishihara O, Seki H, Woods DC, Tilly JL. Extracellular matrix signaling activates differentiation of adult ovary-derived oogonial stem cells in a species-specific manner. Fertil Steril 2019; 111:794-805. [PMID: 30871765 DOI: 10.1016/j.fertnstert.2018.12.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 12/01/2018] [Accepted: 12/17/2018] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To test if ovarian microenvironmental cues affect oogonial stem cell (OSC) function in a species-specific manner. DESIGN Animal and human study. SETTING Research laboratory. PATIENT(S)/ANIMAL(S) Human ovarian cells obtained from cryopreserved ovarian cortical tissue of reproductive-age women, and ovarian cells and tissues from female C57BL/6 mice. INTERVENTION(S) Mouse ovarian tissue, mouse OSCs (mOSCs) and human OSCs (hOSCs) were analyzed for extracellular matrix (ECM) protein expression, and OSCs isolated from adult mouse and human ovaries were cultured in the absence or presence of ECM proteins without or with an integrin signaling inhibitor. MAIN OUTCOME MEASURE(S) Gene expression and in vitro derived (IVD) oocyte formation. RESULT(S) Culture of mOSCs on a collagen-based ECM significantly elevated the rate of differentiation of the cells into IVD oocytes. Mouse OSCs expressed many integrins, including Arg-Gly-Asp (RGD)-binding subunits, and ECM-mediated increases in mOSC differentiation were blocked by addition of integrin-antagonizing RGD peptides. In comparison, hOSCs expressed a different pattern of integrin subunits compared with mOSCs, and hOSCs were unresponsive to a collagen-based ECM; however, hOSCs exhibited increased differentiation into IVD oocytes when cultured on laminin. CONCLUSION(S) These data, along with in silico analysis of ECM protein profiles in human ovaries, indicate that ovarian ECM-based niche components function in a species-specific manner to control OSC differentiation.
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Affiliation(s)
- Julie A MacDonald
- Laboratory of Aging and Infertility Research, Department of Biology, Northeastern University, Boston, Massachusetts
| | - Yasushi Takai
- Department of Obstetrics and Gynecology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Osamu Ishihara
- Department of Obstetrics and Gynecology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Hiroyuki Seki
- Department of Obstetrics and Gynecology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Dori C Woods
- Laboratory of Aging and Infertility Research, Department of Biology, Northeastern University, Boston, Massachusetts
| | - Jonathan L Tilly
- Laboratory of Aging and Infertility Research, Department of Biology, Northeastern University, Boston, Massachusetts.
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15
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Liu G, Cooley MA, Nair PM, Donovan C, Hsu AC, Jarnicki AG, Haw TJ, Hansbro NG, Ge Q, Brown AC, Tay H, Foster PS, Wark PA, Horvat JC, Bourke JE, Grainge CL, Argraves WS, Oliver BG, Knight DA, Burgess JK, Hansbro PM. Airway remodelling and inflammation in asthma are dependent on the extracellular matrix protein fibulin-1c. J Pathol 2017; 243:510-523. [PMID: 28862768 DOI: 10.1002/path.4979] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 08/28/2017] [Accepted: 08/29/2017] [Indexed: 01/08/2023]
Abstract
Asthma is a chronic inflammatory disease of the airways. It is characterized by allergic airway inflammation, airway remodelling, and airway hyperresponsiveness (AHR). Asthma patients, in particular those with chronic or severe asthma, have airway remodelling that is associated with the accumulation of extracellular matrix (ECM) proteins, such as collagens. Fibulin-1 (Fbln1) is an important ECM protein that stabilizes collagen and other ECM proteins. The level of Fbln1c, one of the four Fbln1 variants, which predominates in both humans and mice, is increased in the serum and airways fluids in asthma but its function is unclear. We show that the level of Fbln1c was increased in the lungs of mice with house dust mite (HDM)-induced chronic allergic airway disease (AAD). Genetic deletion of Fbln1c and therapeutic inhibition of Fbln1c in mice with chronic AAD reduced airway collagen deposition, and protected against AHR. Fbln1c-deficient (Fbln1c-/- ) mice had reduced mucin (MUC) 5 AC levels, but not MUC5B levels, in the airways as compared with wild-type (WT) mice. Fbln1c interacted with fibronectin and periostin that was linked to collagen deposition around the small airways. Fbln1c-/- mice with AAD also had reduced numbers of α-smooth muscle actin-positive cells around the airways and reduced airway contractility as compared with WT mice. After HDM challenge, these mice also had fewer airway inflammatory cells, reduced interleukin (IL)-5, IL-13, IL-33, tumour necrosis factor (TNF) and CXCL1 levels in the lungs, and reduced IL-5, IL-33 and TNF levels in lung-draining lymph nodes. Therapeutic targeting of Fbln1c reduced the numbers of GATA3-positive Th2 cells in the lymph nodes and lungs after chronic HDM challenge. Treatment also reduced the secretion of IL-5 and IL-13 from co-cultured dendritic cells and T cells restimulated with HDM extract. Human epithelial cells cultured with Fbln1c peptide produced more CXCL1 mRNA than medium-treated controls. Our data show that Fbln1c may be a therapeutic target in chronic asthma. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Gang Liu
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Marion A Cooley
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, USA
| | - Prema M Nair
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Chantal Donovan
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Alan C Hsu
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Andrew G Jarnicki
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia.,Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, Victoria, Australia
| | - Tatt Jhong Haw
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Nicole G Hansbro
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Qi Ge
- Woolcock Institute of Medical Research, Discipline of Pharmacology, University of Sydney, Sydney, New South Wales, Australia
| | - Alexandra C Brown
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Hock Tay
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Paul S Foster
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Peter A Wark
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia.,Department of Respiratory and Sleep Medicine, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - Jay C Horvat
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Jane E Bourke
- Biomedicine Discovery Institute, Department of Pharmacology, Monash University, Parkville, Victoria, Australia
| | - Chris L Grainge
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - W Scott Argraves
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, USA
| | - Brian G Oliver
- Woolcock Institute of Medical Research, Discipline of Pharmacology, University of Sydney, Sydney, New South Wales, Australia.,School of Life Sciences, University of Technology Sydney, Sydney, New South Wales, Australia
| | - Darryl A Knight
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Janette K Burgess
- Woolcock Institute of Medical Research, Discipline of Pharmacology, University of Sydney, Sydney, New South Wales, Australia.,University of Groningen, University Medical Centre Groningen, Department of Pathology and Medical Biology, Groningen Research Institute of Asthma and COPD, Groningen, The Netherlands
| | - Philip M Hansbro
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
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16
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Hou L, Liu Y, Gao Q, Xu X, Ning M, Bi J, Liu H, Liu M, Gu W, Wang W, Meng Q. Spiroplasma eriocheiris Adhesin-Like Protein (ALP) Interacts with Epidermal Growth Factor (EGF) Domain Proteins to Facilitate Infection. Front Cell Infect Microbiol 2017; 7:13. [PMID: 28184355 PMCID: PMC5266718 DOI: 10.3389/fcimb.2017.00013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 01/10/2017] [Indexed: 12/20/2022] Open
Abstract
Spiroplasma eriocheiris is a novel pathogen found in recent years, causing the tremor disease (TD) of Chinese mitten crab Eriocheir sinensis. Like Spiroplasma mirum, S. eriocheiris infects the newborn mouse (adult mice are not infected) and can cause cataract. Adhesion-related protein is an important protein involved in the interaction between pathogen and host. In this study, the Adhesin-like Protein (ALP) of S. eriocheiris was detected on its outer membrane by using immune electron microscopy, and was found to be involved in the bacterium's infection of mouse embryo fibroblasts (3T6-Swiss albino). Yeast two-hybrid analysis demonstrated that ALP interacts with a diverse group of mouse proteins. The interactions between recombinant partial fibulin7 (FBLN7; including two epidermal growth factor [EGF] domains) and ALP were confirmed by Far-western blotting and colocalization. We synthetized the domains of FBLN7 [EGF domain: amino acids 136–172 and complement control protein (CCP) domain: 81–134 amino acids], and demonstrated that only EGF domain of FBLN7 can interact with ALP. Because the EGF domain has high degree of similarity to EGF, it can activate the downstream EGFR signaling pathway, in key site amino acids. The EGFR pathway in 3T6 cells was restrained after rALP stimulation resulting from competitive binding of ALP to EGF. The unborn mouse, newborn mouse, and the adult mouse with cataract have a small amount of expressed FBLN7; however, none was detected in the brain and very little expression was seen in the eye of normal adult mice. In short, ALP as a S. eriocheiris surface protein, is critical for infection and further supports the role of ALP in S. eriocheiris infection by competitive effection of the EGF/EGFR axis of the target cells.
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Affiliation(s)
- Libo Hou
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University Nanjing, China
| | - Yuhan Liu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University Nanjing, China
| | - Qi Gao
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University Nanjing, China
| | - Xuechuan Xu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University Nanjing, China
| | - Mingxiao Ning
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University Nanjing, China
| | - Jingxiu Bi
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University Nanjing, China
| | - Hui Liu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University Nanjing, China
| | - Min Liu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University Nanjing, China
| | - Wei Gu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal UniversityNanjing, China; Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu ProvinceLianYungang, China
| | - Wen Wang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University Nanjing, China
| | - Qingguo Meng
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal UniversityNanjing, China; Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu ProvinceLianYungang, China
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17
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Fresco VM, Kern CB, Mohammadi M, Twal WO. Fibulin-1 Binds to Fibroblast Growth Factor 8 with High Affinity: EFFECTS ON EMBRYO SURVIVAL. J Biol Chem 2016; 291:18730-9. [PMID: 27402846 DOI: 10.1074/jbc.m115.702761] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Indexed: 11/06/2022] Open
Abstract
Fibulin-1 (FBLN1) is a member of a growing family of extracellular matrix glycoproteins that includes eight members and is involved in cellular functions such as adhesion, migration, and differentiation. FBLN1 has also been implicated in embryonic heart and valve development and in the formation of neural crest-derived structures, including aortic arch, thymus, and cranial nerves. Fibroblast growth factor 8 (FGF8) is a member of a large family of growth factors, and its functions include neural crest cell (NCC) maintenance, specifically NCC migration as well as patterning of structures formed from NCC such as outflow tract and cranial nerves. In this report, we sought to investigate whether FBLN1 and FGF8 have cooperative roles in vivo given their influence on the development of the same NCC-derived structures. Surface plasmon resonance binding data showed that FBLN1 binds tightly to FGF8 and prevents its enzymatic degradation by ADAM17. Moreover, overexpression of FBLN1 up-regulates FGF8 gene expression, and down-regulation of FBLN1 by siRNA inhibits FGF8 expression. The generation of a double mutant Fbln1 and Fgf8 mice (Fbln1(-/-) and Fgf8(-/-)) showed that haplo-insufficiency (Fbln1(+/-) and Fgf8(+/-)) resulted in increased embryonic mortality compared with single heterozygote crosses. The mortality of the FGF8/Fbln1 double heterozygote embryos occurred between 14.5 and 16.5 days post-coitus. In conclusion, FBLN1/FGF8 interaction plays a role in survival of vertebrate embryos, and reduced levels of both proteins resulted in added mortality in utero The FBLN1/FGF8 interaction may also be involved in the survival of neural crest cell population during development.
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Affiliation(s)
- Victor M Fresco
- From the Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, South Carolina 29425 and
| | - Christine B Kern
- From the Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, South Carolina 29425 and
| | - Moosa Mohammadi
- the Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016
| | - Waleed O Twal
- From the Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, South Carolina 29425 and
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18
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Liu G, Cooley MA, Jarnicki AG, Hsu ACY, Nair PM, Haw TJ, Fricker M, Gellatly SL, Kim RY, Inman MD, Tjin G, Wark PAB, Walker MM, Horvat JC, Oliver BG, Argraves WS, Knight DA, Burgess JK, Hansbro PM. Fibulin-1 regulates the pathogenesis of tissue remodeling in respiratory diseases. JCI Insight 2016; 1. [PMID: 27398409 DOI: 10.1172/jci.insight.86380] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Airway and/or lung remodeling, involving exaggerated extracellular matrix (ECM) protein deposition, is a critical feature common to pulmonary diseases including chronic obstructive pulmonary disease (COPD), asthma, and idiopathic pulmonary fibrosis (IPF). Fibulin-1 (Fbln1), an important ECM protein involved in matrix organization, may be involved in the pathogenesis of these diseases. We found that Fbln1 was increased in COPD patients and in cigarette smoke-induced (CS-induced) experimental COPD in mice. Genetic or therapeutic inhibition of Fbln1c protected against CS-induced airway fibrosis and emphysema-like alveolar enlargement. In experimental COPD, this occurred through disrupted collagen organization and interactions with fibronectin, periostin, and tenascin-c. Genetic inhibition of Fbln1c also reduced levels of pulmonary inflammatory cells and proinflammatory cytokines/chemokines (TNF-α, IL-33, and CXCL1) in experimental COPD. Fbln1c-/- mice also had reduced airway remodeling in experimental chronic asthma and pulmonary fibrosis. Our data show that Fbln1c may be a therapeutic target in chronic respiratory diseases.
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Affiliation(s)
- Gang Liu
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Marion A Cooley
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Andrew G Jarnicki
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Alan C-Y Hsu
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Prema M Nair
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Tatt Jhong Haw
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Michael Fricker
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Shaan L Gellatly
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Richard Y Kim
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Mark D Inman
- Division of Respirology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Gavin Tjin
- Woolcock Institute of Medical Research, Discipline of Pharmacology, The University of Sydney, Sydney, New South Wales, Australia
| | - Peter A B Wark
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia; Department of Respiratory and Sleep Medicine, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - Marjorie M Walker
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Jay C Horvat
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
| | - Brian G Oliver
- Woolcock Institute of Medical Research, Discipline of Pharmacology, The University of Sydney, Sydney, New South Wales, Australia; School of Life Sciences, The University of Technology, Sydney, New South Wales, Australia
| | - W Scott Argraves
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Darryl A Knight
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia; Department of Anesthesiology, Pharmacology and Therapeutics, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Janette K Burgess
- Woolcock Institute of Medical Research, Discipline of Pharmacology, The University of Sydney, Sydney, New South Wales, Australia; Discipline of Pharmacology, Sydney Medical School, The University of Sydney, New South Wales, Australia; Department of Pathology and Medical Biology, University of Groningen, University Medical Center, Groningen, Netherlands
| | - Philip M Hansbro
- Priority Research for Healthy Lungs, Hunter Medical Research Institute and The University of Newcastle, Newcastle, New South Wales, Australia
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19
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Calumenin and fibulin-1 on tumor metastasis: Implications for pharmacology. Pharmacol Res 2015; 99:11-5. [PMID: 25976680 DOI: 10.1016/j.phrs.2015.05.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 05/01/2015] [Accepted: 05/01/2015] [Indexed: 01/08/2023]
Abstract
Tumor metastasis is a key cause of cancer mortality, and inhibiting migration of cancer cells is one of the major directions of anti-metastatic drug development. Calumenin and fibulin-1 are two extracellular proteins that synergistically inhibit cell migration and tumor metastasis, and could potentially be served as targets for pharmacological research of anti-metastatic drugs. This review briefly introduces the multi-function of these two proteins, and discusses the mechanism of how they regulate cell migration and tumor metastasis.
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20
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Twal WO, Hammad SM, Guffy SL, Argraves WS. A novel intracellular fibulin-1D variant binds to the cytoplasmic domain of integrin beta 1 subunit. Matrix Biol 2015; 43:97-108. [PMID: 25661773 DOI: 10.1016/j.matbio.2015.01.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 01/26/2015] [Accepted: 01/26/2015] [Indexed: 01/03/2023]
Abstract
Fibulin-1 is a member of a growing family of proteins that includes eight members and is involved in cellular functions such as adhesion, migration and differentiation. Fibulin-1 has also been implicated in embryonic development of the heart and neural crest-derived structures. It is an integral part of the extracellular matrix (ECM) and has been shown to bind to a multitude of ECM proteins. However, fibulin-1 was first identified as a protein purified from placental extracts that binds to the cytoplasmic domain of integrin β1. Human fibulin-1 is alternatively spliced into four different isoforms namely A-D. These isoforms share a common N-terminus sequence that contains a secretion sequence but differ in their carboxy-terminal fibulin-1 module. In this report we identify a new splice variant of fibulin-1 that differs from all other fibulin-1 variants in the N-terminus sequence and has a similar carboxy-terminus sequence as fibulin-1D. This variant that we named fibulin-1D prime (fibulin-1D') lacks a secretion sequence and the anaphlatoxin region of fibulin-1 variants. The protein has an apparent molecular weight of 70.5kDa. Herein we show that fibulin-1D' binds to the intracellular domain of integrin β1 as well as to integrin α5β1. The protein was localized intracellularly in CHO cells transfected with a pEF4 plasmid containing full-length coding sequence of fibulin-1D'. We also localized the protein in human placenta. We propose that the fibulin-1D' variant might play a role in early embryo development as well as in modulating integrin β1 functions including adhesion and motility.
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Affiliation(s)
- Waleed O Twal
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, 173 Ashley Avenue, MSC 508, Charleston, SC 29412, USA.
| | - Samar M Hammad
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, 173 Ashley Avenue, MSC 508, Charleston, SC 29412, USA.
| | - Sharon L Guffy
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, 173 Ashley Avenue, MSC 508, Charleston, SC 29412, USA
| | - William S Argraves
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, 173 Ashley Avenue, MSC 508, Charleston, SC 29412, USA
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21
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Overgaard M, Cangemi C, Jensen ML, Argraves WS, Rasmussen LM. Total and isoform-specific quantitative assessment of circulating fibulin-1 using selected reaction monitoring MS and time-resolved immunofluorometry. Proteomics Clin Appl 2015; 9:767-75. [PMID: 25331251 DOI: 10.1002/prca.201400070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 09/25/2014] [Accepted: 10/15/2014] [Indexed: 01/17/2023]
Abstract
PURPOSE Targeted proteomics using SRM-MS combined with stable-isotope dilution has emerged as a promising quantitative technique for the study of circulating protein biomarkers. The purpose of this study was to develop and characterize robust quantitative assays for the emerging cardiovascular biomarker fibulin-1 and its circulating isoforms in human plasma. EXPERIMENTAL DESIGN We used bioinformatics analysis to predict total and isoform-specific tryptic peptides for absolute quantitation using SRM-MS. Fibulin-1 was quantitated in plasma by nanoflow-LC-SRM-MS in undepleted plasma and time-resolved immunofluorometric assay (TRIFMA). Both methods were validated and compared to a commercial ELISA (CircuLex). Molecular size determination was performed under native conditions by SEC analysis coupled to SRM-MS and TRIFMA. RESULTS Absolute quantitation of total fibulin-1, isoforms -1C, and -1D was performed by SRM-MS. Fibulin-1C was the most abundant isoform in plasma. Circulating fibulin-1 isoforms were homo -or hetero multimeric complexes (range 318-364 kDa). Good correlation was obtained between SRM-MS and TRIFMA but not CircuLex. CONCLUSIONS AND CLINICAL RELEVANCE For biomarker studies using smaller cohorts, SRM-MS provides an alternative measure of total and specific fibulin-1 isoforms in undepleted plasma. For larger cohorts TRIFMA provides a faster platform for fibulin-1 quantitation in plasma. While the correlation between these methods was acceptable, low correlation was obtained between the commercial CircuLex assay and SRM-MS or TRIFMA.
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Affiliation(s)
- Martin Overgaard
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark.,Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Claudia Cangemi
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Martin L Jensen
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - William S Argraves
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, USA
| | - Lars M Rasmussen
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark.,Centre for Individualized Medicine in Arterial Diseases, Odense University Hospital, Odense, Denmark.,Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
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22
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Harikrishnan K, Cooley MA, Sugi Y, Barth JL, Rasmussen LM, Kern CB, Argraves KM, Argraves WS. Fibulin-1 suppresses endothelial to mesenchymal transition in the proximal outflow tract. Mech Dev 2015; 136:123-32. [PMID: 25575930 DOI: 10.1016/j.mod.2014.12.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Revised: 12/08/2014] [Accepted: 12/29/2014] [Indexed: 02/04/2023]
Abstract
Endothelial to mesenchymal transition (EMT) that occurs during cardiac outflow tract (OFT) development is critical for formation of the semilunar valves. Fibulin-1 (Fbln1) is an extracellular matrix protein that is present at several sites of EMT, including the OFT (i.e., E9.5-10.5). The aim of this study was to determine the role of Fbln1 in EMT during the earliest events of OFT development. Examination of proximal OFT cushions in Fbln1 null embryos detected hypercellularity at both E9.5 (93% increase; p = 0.002) and E10.5 (43% increase; p = 0.01) as compared to wild type, suggesting that Fbln1 normally suppresses OFT endocardial cushion EMT. This was supported by studies of proximal OFT cushion explants, which showed that explants from Fbln1 null embryos displayed a 58% increase in cells migrating from the explants as compared to wild type (p = 0.005). We next evaluated the effects of Fbln1 deficiency on the expression of factors that regulate proximal OFT EMT. At E9.5, Fbln1 null proximal OFT endocardium and EMT-derived mesenchyme showed increased TGFβ2 (58% increase; p = 0.01) and increased Snail1-positive nuclei (27% increase; p = 0.0003). Histological examination of OFT cushions in Fbln1 null embryos (E9.5) also detected cells present in the cushion that were determined to be erythrocytes based on round morphology, autofluorescence, and positive staining for hemoglobin. Erythrocytes were also detected in Fbln1 null OFT cushions at E10.5. Together, the findings indicate that Fbln1 normally suppresses proximal OFT EMT preventing proximal cushion hypercellularity and blood cell accumulation.
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Affiliation(s)
- Keerthi Harikrishnan
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Marion A Cooley
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Yukiko Sugi
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Jeremy L Barth
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Lars M Rasmussen
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Christine B Kern
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Kelley M Argraves
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA.
| | - W Scott Argraves
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
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23
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Stankiewicz AM, Goscik J, Swiergiel AH, Majewska A, Wieczorek M, Juszczak GR, Lisowski P. Social stress increases expression of hemoglobin genes in mouse prefrontal cortex. BMC Neurosci 2014; 15:130. [PMID: 25472829 PMCID: PMC4269175 DOI: 10.1186/s12868-014-0130-6] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 11/18/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND In order to better understand the effects of social stress on the prefrontal cortex, we investigated gene expression in mice subjected to acute and repeated social encounters of different duration using microarrays. RESULTS The most important finding was identification of hemoglobin genes (Hbb-b1, Hbb-b2, Hba-a1, Hba-a2, Beta-S) as potential markers of chronic social stress in mice. Expression of these genes was progressively increased in animals subjected to 8 and 13 days of repeated stress and was correlated with altered expression of Mgp (Mglap), Fbln1, 1500015O10Rik (Ecrg4), SLC16A10, and Mndal. Chronic stress increased also expression of Timp1 and Ppbp that are involved in reaction to vascular injury. Acute stress did not affect expression of hemoglobin genes but it altered expression of Fam107a (Drr1) and Agxt2l1 (Etnppl) that have been implicated in psychiatric diseases. CONCLUSIONS The observed up-regulation of genes associated with vascular system and brain injury suggests that stressful social encounters may affect brain function through the stress-induced dysfunction of the vascular system.
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Affiliation(s)
- Adrian M Stankiewicz
- Department of Animal Behavior, Institute of Genetics and Animal Breeding, Jastrzebiec, ul. Postepu 36A, 05-552, Magdalenka, Poland.
| | - Joanna Goscik
- Faculty of Computer Science, Bialystok University of Technology, Wiejska 45A, 15-351, Bialystok, Poland.
| | - Artur H Swiergiel
- Department of Human and Animal Physiology, Institute of Biology, University of Gdansk, 80-308, Gdansk, Poland.
| | - Alicja Majewska
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland.
| | - Marek Wieczorek
- Department of Neurobiology, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Pomorska, 141/143, Poland.
| | - Grzegorz R Juszczak
- Department of Animal Behavior, Institute of Genetics and Animal Breeding, Jastrzebiec, ul. Postepu 36A, 05-552, Magdalenka, Poland.
| | - Paweł Lisowski
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Jastrzebiec, ul. Postepu 36A, 05-552, Magdalenka, Poland. .,iPS Cell-Based Disease Modeling Group, Max-Delbrück-Center for Molecular Medicine (MDC) in the Helmholtz Association, 13092, Berlin, Germany.
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24
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Cooley MA, Harikrishnan K, Oppel JA, Miler SF, Barth JL, Haycraft CJ, Reddy SV, Scott Argraves W. Fibulin-1 is required for bone formation and Bmp-2-mediated induction of Osterix. Bone 2014; 69:30-8. [PMID: 25201465 PMCID: PMC4385289 DOI: 10.1016/j.bone.2014.07.038] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 07/22/2014] [Accepted: 07/27/2014] [Indexed: 01/16/2023]
Abstract
The extracellular matrix protein Fibulin-1 (Fbln1) has been shown to be involved in numerous processes including cardiovascular and lung development. Here we have examined the role of Fbln1 in bone formation. Alizarin red staining of skulls from Fbln1-deficient mice showed reduced mineralization of both membranous and endochondral bones. MicroCT (μCT) analysis of the calvarial bones (i.e., frontal, parietal and interparietal bones collectively) indicated that bone volume in Fbln1 nulls at neonatal stage P0 were reduced by 22% (p=0.015). Similarly, Fbln1 null frontal bones showed a 16% (p=0.035) decrease in bone volume, with a reduction in the interfrontal bone, and a discontinuity in the leading edge of the frontal bone. To determine whether Fbln1 played a role in osteoblast differentiation during bone formation, qPCR was used to measure the effects of Fbln1 deficiency on the expression of Osterix (Osx), a transcription factor essential for osteoblast differentiation. This analysis demonstrated that Osx mRNA was significantly reduced in Fbln1-deficient calvarial bones at developmental stages E16.5 (p=0.049) and E17.5 (p=0.022). Furthermore, the ability of Bmp-2 to induce Osx expression was significantly diminished in Fbln1-deficient mouse embryo fibroblasts. Together, these findings indicate that Fbln1 is a new positive modulator of the formation of membranous bone and endochondral bone in the skull, acting as a positive regulator of Bmp signaling.
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Affiliation(s)
- Marion A Cooley
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA; Department of Oral Health Sciences, Medical University of South Carolina, Charleston, SC 29425, USA.
| | - Keerthi Harikrishnan
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - James A Oppel
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Sloan F Miler
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Jeremy L Barth
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Courtney J Haycraft
- Department of Oral Health Sciences, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Sakamuri V Reddy
- Charles P. Darby Children's Research Institute, Medical University of South Carolina, Charleston, SC 29425, USA
| | - W Scott Argraves
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
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25
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Cangemi C, Hansen ML, Argraves WS, Rasmussen LM. Fibulins and their role in cardiovascular biology and disease. Adv Clin Chem 2014; 67:245-65. [PMID: 25735864 DOI: 10.1016/bs.acc.2014.09.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Fibulins are a group of extracellular matrix proteins of which many are present in high amounts in the cardiovascular system. They share common biochemical properties and are often found in relation to basement membranes or elastic fibers. Observations in humans with specific mutations in fibulin genes, together with results from genetically engineered mice and data from human cardiovascular tissue suggest that the fibulin family of proteins play important functional roles in the cardiovascular system. Moreover, fibulin-1 circulates in high concentrations in plasma and may function as a cardiovascular disease marker.
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Affiliation(s)
- Claudia Cangemi
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Maria Lyck Hansen
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - William Scott Argraves
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Lars Melholt Rasmussen
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark.
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26
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de Vega S, Suzuki N, Nonaka R, Sasaki T, Forcinito P, Arikawa-Hirasawa E, Yamada Y. A C-terminal fragment of fibulin-7 interacts with endothelial cells and inhibits their tube formation in culture. Arch Biochem Biophys 2014; 545:148-53. [PMID: 24480309 PMCID: PMC3974681 DOI: 10.1016/j.abb.2014.01.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 12/21/2013] [Accepted: 01/15/2014] [Indexed: 11/17/2022]
Abstract
We have previously demonstrated that fibulin-7 (Fbln7) is expressed in teeth by pre-odontoblast and odontoblast cells, localized in the basement membrane and dentin matrices, and is an adhesion molecule for dental mesenchyme cells and odontoblasts. Fbln7 is also expressed in blood vessels by endothelial cells. In this report, we show that a recombinant C-terminal Fbln7 fragment (Fbln7-C) bound to Human Umbilical Vein Endothelial Cells (HUVECs) but did not promote cell spreading and actin stress fiber formation. Fbln7-C binding to HUVECs induced integrin clustering at cell adhesion sites with other focal adhesion molecules, and sustained activation of FAK, p130Cas, and Rac1. In addition, RhoA activation was inhibited, thereby preventing HUVEC spreading. As endothelial cell spreading is an important step for angiogenesis, we examined the effect of Fbln7-C on angiogenesis using in vitro assays for endothelial cell tube formation and vessel sprouting from aortic rings. We found that Fbln7-C inhibited the HUVEC tube formation and the vessel sprouting in aortic ring assays. Our findings suggest potential anti-angiogenic activity of the Fbln7 C-terminal region.
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Affiliation(s)
- Susana de Vega
- Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4370, United States; Research Institute for Diseases of Old Age, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Nobuharu Suzuki
- Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4370, United States; Department of Biochemistry and Biophysics, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Risa Nonaka
- Research Institute for Diseases of Old Age, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Takako Sasaki
- Department of Experimental Medicine, Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuernberg, Erlangen, Germany
| | - Patricia Forcinito
- Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4370, United States
| | - Eri Arikawa-Hirasawa
- Research Institute for Diseases of Old Age, Juntendo University School of Medicine, Tokyo 113-8421, Japan
| | - Yoshihiko Yamada
- Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4370, United States.
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27
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Mutation of fibulin-1 causes a novel syndrome involving the central nervous system and connective tissues. Eur J Hum Genet 2013; 22:640-3. [PMID: 24084572 DOI: 10.1038/ejhg.2013.210] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 08/01/2013] [Accepted: 08/16/2013] [Indexed: 01/28/2023] Open
Abstract
Fibulin-1 is an extracellular matrix protein that has an important role in the structure of elastic fibers and basement membranes of various tissues. Using homozygosity mapping and exome sequencing, we discovered a missense mutation, p.(Cys397Phe), in fibulin-1 in three patients from a consanguineous family presented with a novel syndrome of syndactyly, undescended testes, delayed motor milestones, mental retardation and signs of brain atrophy. The mutation discovered segregated with the phenotype and was not found in 374 population-matched alleles. The affected cysteine is highly conserved across vertebrates and its mutation is predicted to abolish a disulfide bond that defines the tertiary structure of fibulin-1. Our findings emphasize the crucial role fibulin-1 has in development of the central nervous system and various connective tissues.
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28
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Xu X, Xu M, Zhou X, Jones OB, Moharomd E, Pan Y, Yan G, Anthony DD, Isaacs WB. Specific structure and unique function define the hemicentin. Cell Biosci 2013; 3:27. [PMID: 23803222 PMCID: PMC3707829 DOI: 10.1186/2045-3701-3-27] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 04/24/2013] [Indexed: 12/29/2022] Open
Abstract
Hemicentin has come a long way from when it was first identified in C. elegans as him-4 (High incidence of males). The protein is now a recognized player in maintaining the architectural integrity of vertebrate tissues and organs. Highly conserved hemicentin sequences across species indicate this gene's ancient evolutionary roots and functional importance. In mouse, hemicentin is liberally distributed on the cell surface of many cell types, including epithelial cells, endothelial cells of the eye, lung, and uterus, and trophectodermal cells of blastocyst. Recent discoveries have uncovered yet another vital purpose of hemicentin 1. The protein also serves a unique function in mitotic cytokinesis, during which this extracellular matrix protein plays a key role in cleavage furrow maturation. Though understanding of hemicentin function has improved through new discoveries, much about this protein remains mysterious.
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Affiliation(s)
- Xuehong Xu
- School of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China.
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29
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Muriel JM, Dong C, Vogel BE. Distinct regions within fibulin-1D modulate interactions with hemicentin. Exp Cell Res 2012; 318:2543-7. [DOI: 10.1016/j.yexcr.2012.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 08/23/2012] [Accepted: 08/28/2012] [Indexed: 11/29/2022]
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30
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Feitosa NM, Zhang J, Carney TJ, Metzger M, Korzh V, Bloch W, Hammerschmidt M. Hemicentin 2 and Fibulin 1 are required for epidermal-dermal junction formation and fin mesenchymal cell migration during zebrafish development. Dev Biol 2012; 369:235-48. [PMID: 22771579 DOI: 10.1016/j.ydbio.2012.06.023] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 06/06/2012] [Accepted: 06/28/2012] [Indexed: 01/03/2023]
Abstract
Hemicentin 1 (Hmcn1) and Hemicentin 2 (Hmcn2) belong to the fibulin family of extracellular matrix (ECM) proteins that play pivotal roles during development and homeostasis of a variety of vertebrate tissues. Recently, we have shown that mutations in zebrafish Hmcn1, also called Fibulin 6, lead to massive fin blistering, similar to the defects caused by the Fraser syndrome gene Fras1. In contrast, the role of Hmcn2 during vertebrate development has thus far been uncharacterized. In zebrafish, hmcn2, like fibulin 1 (fbln1), another member of the fibulin family, is predominantly expressed in fin mesenchymal cells and developing somites, contrasting the strict epithelial expression of hmcn1. While antisense morpholino oligonucleotide (MO)-based knockdown of hmcn2 did not yield any discernable defects, hmcn2/fbln1 double knockdown fish displayed blistering in the trunk, pointing to an essential contribution of these proteins from mesodermal sources for proper epidermal-dermal junction formation. In contrast, and unlike hmcn1 mutants, epidermal-dermal junctions in the fin folds of hmcn2/fbln1 double knockdown fish were only moderately affected. Instead, they displayed impaired migration of fin mesenchymal cells into the fin folds, pointing to a crucial role of Hmcn2 and Fbln1 to remodel the ECM of the fin fold interepidermal space, which is a prerequisite for fibroblast ingrowth. TEM analyses suggest that this ECM remodeling occurs at the level of actinotrichia, the collageneous migration substrate of mesenchymal cells, and at the level of cross fibers, which resemble mammalian microfibers. This work provides first insights into the role of Hmcn2 during vertebrate development, identifying it as an evolutionary conserved protein that acts in functional redundancy with Fbln1C and/or Fbln1D isoforms to regulate tissue adhesion and cell migration, while extending the current knowledge of the functions of vertebrate Fbln1.
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Lau JY, Oliver BG, Baraket M, Beckett EL, Hansbro NG, Moir LM, Wilton SD, Williams C, Foster PS, Hansbro PM, Black JL, Burgess JK. Fibulin-1 is increased in asthma--a novel mediator of airway remodeling? PLoS One 2010; 5:e13360. [PMID: 20967215 PMCID: PMC2954173 DOI: 10.1371/journal.pone.0013360] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Accepted: 09/13/2010] [Indexed: 11/24/2022] Open
Abstract
Background The extracellular matrix is a dynamic and complex network of macromolecules responsible for maintaining and influencing cellular functions of the airway. The role of fibronectin, an extracellular matrix protein, is well documented in asthma. However, the expression and function of fibulin-1, a secreted glycoprotein which interacts with fibronectin, has not been reported. Fibulin-1 is widely expressed in basement membranes in many organs including the lung. There are four isoforms in humans (A–D) of which fibulin-1C and 1D predominate. The objective of this study was to study the expression of fibulin-1 in volunteers with and without asthma, and to examine its function in vitro. Methodology/Principal Findings We used immunohistochemistry and dot-blots to examine fibulin-1 levels in bronchial biopsies, bronchoalveolar lavage fluid and serum. Real-time PCR for fibulin-1C and 1D, and ELISA and western blotting for fibulin-1 were used to study the levels in airway smooth muscle cells. The function of fibulin-1C was determined by assessing its role, using an antisense oligonucleotide, in cell proliferation, migration and wound healing. A murine model of airway hyperresponsiveness (AHR) was used to explore the biological significance of fibulin-1. Levels of fibulin-1 were significantly increased in the serum and bronchoalveolar lavage fluid of 21 asthmatics compared with 11 healthy volunteers. In addition fibulin-1 was increased in asthma derived airway smooth muscle cells and fibulin-1C contributed to the enhanced proliferation and wound repair in these cells. These features were reversed when fibulin-1C was suppressed using an antisense oligomer. In a mouse model of AHR, treatment with an AO inhibited the development of AHR to methacholine. Conclusions Our data collectively suggest fibulin-1C may be worthy of further investigation as a target for airway remodeling in asthma.
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Affiliation(s)
- Justine Y. Lau
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Discipline of Pharmacology, The University of Sydney, Sydney, New South Wales, Australia
| | - Brian G. Oliver
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Discipline of Pharmacology, The University of Sydney, Sydney, New South Wales, Australia
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
| | - Melissa Baraket
- Discipline of Pharmacology, The University of Sydney, Sydney, New South Wales, Australia
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
| | - Emma L. Beckett
- Centre for Asthma and Respiratory Disease and Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia
| | - Nicole G. Hansbro
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Centre for Asthma and Respiratory Disease and Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia
| | - Lyn M. Moir
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Discipline of Pharmacology, The University of Sydney, Sydney, New South Wales, Australia
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
| | - Steve D. Wilton
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Centre for Neuromuscular and Neurological Disorders, University of Western Australia, Perth, Western Australia, Australia
- Lung Institute of Western Australia and the Centre for Asthma, Allergy and Respiratory Research, University of Western Australia, Perth, Western Australia, Australia
| | - Carolyn Williams
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Lung Institute of Western Australia and the Centre for Asthma, Allergy and Respiratory Research, University of Western Australia, Perth, Western Australia, Australia
| | - Paul S. Foster
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Centre for Asthma and Respiratory Disease and Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia
| | - Philip M. Hansbro
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Centre for Asthma and Respiratory Disease and Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia
| | - Judith L. Black
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Discipline of Pharmacology, The University of Sydney, Sydney, New South Wales, Australia
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
| | - Janette K. Burgess
- Cooperative Research Centre for Asthma and Airways, Sydney, New South Wales, Australia
- Discipline of Pharmacology, The University of Sydney, Sydney, New South Wales, Australia
- Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
- * E-mail:
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Expression of ECM proteins fibulin-1 and -2 in acute and chronic liver disease and in cultured rat liver cells. Cell Tissue Res 2009; 337:449-62. [PMID: 19609566 PMCID: PMC2728066 DOI: 10.1007/s00441-009-0823-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Accepted: 05/25/2009] [Indexed: 01/10/2023]
Abstract
Fibulin-2 has previously been considered as a marker to distinguish rat liver myofibroblasts from hepatic stellate cells. The function of other fibulins in acute or chronic liver damage has not yet been investigated. The aim of this study has been to evaluate the expression of fibulin-1 and -2 in models of rat liver injury and in human liver cirrhosis. Their cellular sources have also been investigated. In normal rat liver, fibulin-1 and -2 were both mainly present in the portal field. Fibulin-1-coding transcripts were detected in total RNA of normal rat liver, whereas fibulin-2 mRNA was only detected by sensitive, real-time quantitative polymerase chain reaction. In acute liver injury, the expression of fibulin-1 was significantly increased (17.23-fold after 48 h), whereas that of fibulin-2 was not modified. The expression of both fibulin-1 and -2 was increased in experimental rat liver cirrhosis (19.16- and 26.47-fold, respectively). At the cellular level, fibulin-1 was detectable in hepatocytes, "activated" hepatic stellate cells, and liver myofibroblasts (2.71-, 122.65-, and 469.48-fold over the expression in normal rat liver), whereas fibulin-2 was restricted to liver myofibroblasts and was regulated by transforming growth factor beta-1 (TGF-beta1) in 2-day-old hepatocyte cultures and in liver myofibroblasts. Thus, fibulin-1 and -2 respond differentially to single and repeated damaging noxae, and their expression is differently present in liver cells. Expression of the fibulin-2 gene is regulated by TGF-beta1 in liver myofibroblasts.
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Song JH, Kim JH, Park S, Kang W, Kim HW, Kim HE, Jang JH. Signaling responses of osteoblast cells to hydroxyapatite: the activation of ERK and SOX9. J Bone Miner Metab 2008; 26:138-42. [PMID: 18301969 DOI: 10.1007/s00774-007-0804-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2007] [Accepted: 08/10/2007] [Indexed: 12/29/2022]
Abstract
The intracellular signaling cascade triggered as a result of the surface chemistry of the bone mineral hydroxyapatite (HA) remains largely unknown. In this study, we found that the ERK signaling molecule is activated in response to HA. Moreover, we have performed the first systemic analysis of expression profiles using microarray technology. Eleven genes, including those involved in calcium regulation and bone matrix formation, showed a greater than 2.0-fold change in expression level in response to HA. Among those genes upregulated by HA was the gene encoding SOX9, whose expression we confirmed by real-time PCR analysis with a 5.7-fold increase in expression. Taken together, our results suggest that the activation of ERK and SOX9 by HA could have important implications for understanding the mechanisms by which cells respond on a molecular level to HA.
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Affiliation(s)
- Ju-Ha Song
- School of Materials Science and Engineering, Seoul National University, Seoul, Korea
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de Vega S, Iwamoto T, Nakamura T, Hozumi K, McKnight DA, Fisher LW, Fukumoto S, Yamada Y. TM14 is a new member of the fibulin family (fibulin-7) that interacts with extracellular matrix molecules and is active for cell binding. J Biol Chem 2007; 282:30878-88. [PMID: 17699513 DOI: 10.1074/jbc.m705847200] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
We identified a new extracellular protein, TM14, by differential hybridization using mouse tooth germ cDNA microarrays. TM14 cDNA encodes 440 amino acids containing a signal peptide. The protein contains 3 EGF modules at the center, a C-terminal domain homologous to the fibulin module, and a unique Sushi domain at the N terminus. In situ hybridization revealed that TM14 mRNA was expressed by preodontoblasts and odontoblasts in developing teeth. TM14 mRNA was also expressed in cartilage, hair follicles, and extraembryonic tissues of the placenta. Immunostaining revealed that TM14 was localized at the apical pericellular regions of preodontoblasts. When the dentin matrix was fully formed and dentin mineralization occurred, TM14 was present in the predentin matrix and along the dentinal tubules. We found that the recombinant TM14 protein was glycosylated with N-linked oligosaccharides and interacted with heparin, fibronectin, fibulin-1, and dentin sialophosphoprotein. We also found that TM14 preferentially bound dental mesenchyme cells and odontoblasts but not dental epithelial cells or nondental cells such as HeLa, COS7, or NIH3T3 cells. Heparin, EDTA, and anti-integrin beta1 antibody inhibited TM14 binding to dental mesenchyme cells, suggesting that both a heparan sulfate-containing cell surface receptor and an integrin are involved in TM14 cell binding. Our findings indicate that TM14 is a cell adhesion molecule that interacts with extracellular matrix molecules in teeth and suggest that TM14 plays important roles in both the differentiation and maintenance of odontoblasts as well as in dentin formation. Because of its protein characteristics, TM14 can be classified as a new member of the fibulin family: fibulin-7.
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Affiliation(s)
- Susana de Vega
- Laboratory of Cell and Developmental Biology, NIDCR, National Institutes of Health, Bethesda, Maryland 20892-4370, USA
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Abstract
Fibulin is a broadly conserved component of the extracellular matrix (ECM). Previous studies have shown that Caenorhabditis elegans FIBULIN-1 (FBL-1) controls the width of the gonad (Hesselson, D., C. Newman, K.W. Kim, and J. Kimble. 2004.Curr. Biol. 14:2005–2010; Kubota, Y., R. Kuroki, and K. Nishiwaki. 2004.Curr. Biol. 14:2011–2018; Muriel, J.M., C. Dong, H. Hutter, and B.E. Vogel. 2005.Development. 132: 4223–4234). In this study, we report that FBL-1 also controls developmental growth and that one isoform of fibulin-1, called FBL-1C, controls both functions by distinct mechanisms. A large FBL-1C fragment, including both epidermal growth factor (EGF) and fibulin-type C domains, is responsible for constraining gonadal width, but a much smaller fragment containing only two complete EGF repeats (EGF1-2C+) is critical for developmental growth. We suggest that the larger fragment serves a scaffolding function to stabilize the basement membrane and that the smaller fragment provides a regulatory function at the cell surface or within the ECM to control growth.
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Affiliation(s)
- Daniel Hesselson
- Department of Genetics, University of Wisconsin-Madison, Madison, WI 53706, USA
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Luo X, Ding L, Chegini N. CCNs, fibulin-1C and S100A4 expression in leiomyoma and myometrium: inverse association with TGF-beta and regulation by TGF-beta in leiomyoma and myometrial smooth muscle cells. Mol Hum Reprod 2006; 12:245-56. [PMID: 16571622 DOI: 10.1093/molehr/gal015] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Connective tissue growth factor (CTGF; CCN2) is considered to serve as downstream midiator of TGF-beta action in tissue fibrosis. We tested this hypothesis in paired leiomyoma and myometrium by evaluating the expression of TGF-beta1/TGF-beta3 and CCN2, the other members of the CCN family, CCN3 and CCN4, as well as fibulin-1C and S100A4, calcium-binding proteins that interact with CCNs. The regulatory function of TGF-beta1 on the expression of these genes was further evaluated using leiomyoma (L) and myometrial (M) smooth muscle cells (SMC). Real-time PCR, Western blotting and immunohistochemistry revealed that leiomyomas and myometrium express CCNs, fibulin-1C and S100A4, whose levels of expression with the exception of fibulin-1C were lower in leiomyomas and inversely correlated with the expression of TGF-beta1 and TGF-beta3 (P<0.05). The expression of these genes was menstrual cycle-independent and GnRHa therapy increased the expression of CCN2 in leiomyomas, while inhibiting CCN3, CCN4 and S100A4 in myometrium (P<0.05). TGF-beta (2.5 ng/ml) in a time- and cell-dependent manner, and through MAPK and Smad pathways, differentially regulated the expression of these genes in LSMC and MSMC. We concluded that CCNs, fibulin-1C and S100A4 are expressed in leiomyomas/myometrium with relative expression levels inversely correlating with TGF-betas and influenced by GnRHa and TGF-beta regulatory actions. The results suggest that unlike other fibrotic disorders, CCN2 (CTGF), at least at tissue level, may not serve as a downstream mediator of TGF-beta action in leiomyomas.
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Affiliation(s)
- Xiaoping Luo
- Department of Obstetrics and Gynecology, University of Florida, Gainesville, 32610, USA
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Gallagher WM, Currid CA, Whelan LC. Fibulins and cancer: friend or foe? Trends Mol Med 2005; 11:336-40. [PMID: 15961345 DOI: 10.1016/j.molmed.2005.06.001] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2005] [Revised: 05/09/2005] [Accepted: 06/01/2005] [Indexed: 12/17/2022]
Abstract
The fibulins are a family of secreted glycoproteins, which are characterised by repeated epidermal-growth-factor-like domains and a unique C-terminal structure. Six distinct fibulin genes, encoding at least nine protein products generated by alternative splicing, have been identified. Considerable evidence is available pointing towards a structural role for fibulins within the extracellular matrix. Fibulins have been shown to modulate cell morphology, growth, adhesion and motility. The dysregulation of certain fibulins occurs in a range of human disorders, including cancer. Indeed, both tumour suppressive and oncogenic activities have been proposed for members of the fibulin family. Herein, we discuss the possible roles of fibulins in cancer, in addition to their diagnostic and therapeutic potential.
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Affiliation(s)
- William M Gallagher
- Department of Pharmacology, Centre for Molecular Medicine, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland.
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Lee NV, Rodriguez-Manzaneque JC, Thai SNM, Twal WO, Luque A, Lyons KM, Argraves WS, Iruela-Arispe ML. Fibulin-1 acts as a cofactor for the matrix metalloprotease ADAMTS-1. J Biol Chem 2005; 280:34796-804. [PMID: 16061471 DOI: 10.1074/jbc.m506980200] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
ADAMTS-1 is a metalloprotease that has been implicated in the inhibition of angiogenesis and is a mediator of proteolytic cleavage of the hyaluronan binding proteoglycans, aggrecan and versican. In an attempt to further understand the biological function of ADAMTS-1, a yeast two-hybrid screen was performed using the carboxyl-terminal region of ADAMTS-1 as bait. As a result, the extracellular matrix protein fibulin-1 was identified as a potential interacting molecule. Through a series of analyses that included ligand affinity chromatography, co-immunoprecipitation, pulldown assays, and enzyme-linked immunosorbent assay, the ability of these two proteins to interact was substantiated. Additional studies showed that ADAMTS-1 and fibulin-1 colocalized in vivo. Furthermore, fibulin-1 was found to enhance the capacity of ADAMTS-1 to cleave aggrecan, a proteoglycan known to bind to fibulin-1. We confirmed that fibulin-1 was not a proteolytic substrate for ADAMTS-1. Together, these findings indicate that fibulin-1 is a new regulator of ADAMTS-1-mediated proteoglycan proteolysis and thus may play an important role in proteoglycan turnover in tissues where there is overlapping expression.
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Affiliation(s)
- Nathan V Lee
- Department of Molecular, Cell, and Developmental Biology and Molecular Biology Institute, University of California, Los Angeles, Los Angeles, California 90095, USA
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Nakamoto T, Okada H, Nakajima T, Ikuta A, Yasuda K, Kanzaki H. Progesterone induces the fibulin-1 expression in human endometrial stromal cells. Hum Reprod 2005; 20:1447-55. [PMID: 15774544 DOI: 10.1093/humrep/deh841] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND By using microarray analysis with human endometrial stromal cells (ESCs), we previously reported that the mRNA for fibulin-1, an extracellular matrix as well as a plasma glycoprotein, is up-regulated by progesterone. In the present study, we tried to clarify the spatial and temporal regulation mechanism of fibulin-1 in the human endometrium. METHODS AND RESULTS Quantitative analysis with real-time PCR experiments on human endometrial tissues showed significantly higher fibulin-1 mRNA expressions in secretory phase endometria than in proliferative phase. Immunohistochemical studies revealed that the fibulin-1 protein is expressed in the glandular epithelium in proliferative phase endometria, and that expression switched to the stroma in secretory phase endometria. In culture experiments with ESCs, a significant increase of fibulin-1 mRNA expression was observed in cells treated with 6 alpha-methyl-17 alpha-hydroxy-progesterone acetate (MPA) or 8 bromoadenosine 3':5'-cyclic monophosphate (8-Br-cAMP). MPA stimulated the fibulin-1 mRNA expression in a dose-dependent manner, and a progesterone antagonist, RU-486, inhibited the stimulatory effect almost completely. By contrast, beta-estradiol alone did not increase the fibulin-1 mRNA expression. CONCLUSIONS These results suggest that fiblin-1 is an important molecule that mediates progesterone action in human ESC differentiation towards implantation.
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Affiliation(s)
- T Nakamoto
- Department of Obstetrics and Gynecology, Kansai Medical University, 10-15 Fumizono-cho, Moriguchi, Osaka, 570-8507, Japan.
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Lombet A, Planque N, Bleau AM, Li CL, Perbal B. CCN3 and calcium signaling. Cell Commun Signal 2003; 1:1. [PMID: 14606958 PMCID: PMC244900 DOI: 10.1186/1478-811x-1-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2003] [Accepted: 08/15/2003] [Indexed: 12/31/2022] Open
Abstract
The CCN family of genes consists presently of six members in human (CCN1-6) also known as Cyr61 (Cystein rich 61), CTGF (Connective Tissue Growth Factor), NOV (Nephroblastoma Overexpressed gene), WISP-1, 2 and 3 (Wnt-1 Induced Secreted Proteins). Results obtained over the past decade have indicated that CCN proteins are matricellular proteins, which are involved in the regulation of various cellular functions, such as proliferation, differentiation, survival, adhesion and migration. The CCN proteins have recently emerged as regulatory factors involved in both internal and external cell signaling. CCN3 was reported to physically interact with fibulin-1C, integrins, Notch and S100A4. Considering that, the conformation and biological activity of these proteins are dependent upon calcium binding, we hypothesized that CCN3 might be involved in signaling pathways mediated by calcium ions. In this article, we review the data showing that CCN3 regulates the levels of intracellular calcium and discuss potential models that may account for the biological effects of CCN3.
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Affiliation(s)
- Alain Lombet
- CNRS UMR 8078, Hôpital Marie Lannelongue, 133, Avenue de la Résistance 92350 Le PLESSIS-ROBINSON, France
| | - Nathalie Planque
- Laboratoire d'Oncologie Virale et Moléculaire, Tour 54, Case 7048, Université Paris 7-D.Diderot, 2 Place Jussieu 75005 PARIS, France
| | - Anne-Marie Bleau
- Laboratoire d'Oncologie Virale et Moléculaire, Tour 54, Case 7048, Université Paris 7-D.Diderot, 2 Place Jussieu 75005 PARIS, France
| | - Chang Long Li
- Laboratoire d'Oncologie Virale et Moléculaire, Tour 54, Case 7048, Université Paris 7-D.Diderot, 2 Place Jussieu 75005 PARIS, France
| | - Bernard Perbal
- Laboratoire d'Oncologie Virale et Moléculaire, Tour 54, Case 7048, Université Paris 7-D.Diderot, 2 Place Jussieu 75005 PARIS, France
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Timpl R, Sasaki T, Kostka G, Chu ML. Fibulins: a versatile family of extracellular matrix proteins. Nat Rev Mol Cell Biol 2003; 4:479-89. [PMID: 12778127 DOI: 10.1038/nrm1130] [Citation(s) in RCA: 342] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Fibulins are a newly recognized family of extracellular matrix proteins. The five known members of the family share an elongated structure and many calcium-binding sites, owing to the presence of tandem arrays of epidermal growth factor-like domains. They have overlapping binding sites for several basement-membrane proteins, tropoelastin, fibrillin, fibronectin and proteoglycans, and they participate in diverse supramolecular structures. New insights into their biological roles are now emerging from studies of transgenic mice and of some inherited human diseases.
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Affiliation(s)
- Rupert Timpl
- Laboratory of Protein Chemistry, Max Planck Institute for Biochemistry, D-82152 Martinsried, Germany.
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Brandhorst T, Wüthrich M, Finkel-Jimenez B, Klein B. A C-terminal EGF-like domain governs BAD1 localization to the yeast surface and fungal adherence to phagocytes, but is dispensable in immune modulation and pathogenicity of Blastomyces dermatitidis. Mol Microbiol 2003; 48:53-65. [PMID: 12657044 DOI: 10.1046/j.1365-2958.2003.03415.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BAD1, an adhesin and immune modulator of Blastomyces dermatitidis, is an essential virulence factor that is released extracellularly before association with the yeast surface. Here, deletion of the C-terminal EGF-like domain profoundly affected BAD1 function, leading to non-association with yeast, extracellular accumulation and impaired yeast adherence to macrophages. In equilibrium binding assays, DeltaC-term BAD1, lacking an EGF-like domain, bound poorly to BAD1 null yeast, yielding a low affinity (Kd, 3 x 10(-7) M versus 5 x 10(-8) M) and Bmax (1.9 x 10(5) versus 7.9 x 10(5)) compared with BAD1. Similar protein binding profiles were observed using chitin particles, reinforcing the notion that chitin fibrils are a receptor for BAD1, and that the EGF-like domain is critical for BAD1 interactions with chitin on yeast. DeltaC-term strains bound poorly to macrophages, compared with parental or BAD1-reconstituted null strains. However, DeltaC-term strains and the purified protein itself sharply suppressed tumour necrosis factor (TNF)-alpha release by phagocytes in vitro and in lung in vivo, and the strains retained pathogenicity in a murine model of blastomycosis. Our results illustrate the previously undefined role of the EGF-like domain for BAD1 localization to yeast surfaces during cell wall biogenesis. They also demonstrate that the requirements for host cell binding and immune modulation by BAD1 can be dissociated from one another, and that the former is unexpectedly dispensable in the requisite role of BAD1 in pathogenesis.
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Affiliation(s)
- Tristan Brandhorst
- Department of Pediatrics, University of Wisconsin Medical School, 600 Highland Ave., K4/434, Madison, WI 53792, USA
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Abstract
The role of NMR in structural genomics is outlined, with particular emphasis on using protein domains as targets. Strategies for domain expression, characterization, and labeling are presented.
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Affiliation(s)
- David Staunton
- Department of Biochemistry, University of Oxford, South Parks Road, UK
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Du M, Fan X, Hong E, Chen JJ. Interaction of oncogenic papillomavirus E6 proteins with fibulin-1. Biochem Biophys Res Commun 2002; 296:962-9. [PMID: 12200142 DOI: 10.1016/s0006-291x(02)02041-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Human papillomavirus (HPV) infection is the primary risk factor for the development of cervical cancer. The papillomavirus E6 gene is essential for virus-induced cellular transformation and the viral life cycle. Important insight into the mechanism of E6 function came from the discovery that cancer-related HPV E6 proteins promote the degradation of the tumor suppressor p53. However, mounting evidence indicates that interaction with p53 does not mediate all E6 activities. To explore the p53-independent functions of E6, we performed a yeast two-hybrid screen and identified fibulin-1 as an E6 binding protein. Fibulin-1 is a calcium-binding plasma and extracellular matrix protein that has been implicated in cellular transformation and tumor invasion. The interaction between E6 and fibulin-1 was demonstrated by both in vitro and in vivo assays. Fibulin-1 is associated specifically with cancer-related HPV E6s and the transforming bovine papillomavirus type 1 E6. Significantly, overexpression of fibulin-1 specifically inhibited E6-mediated transformation. These results suggest that fibulin-1 plays an important role in the biological activities of E6.
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Affiliation(s)
- Minjie Du
- Department of Medicine, University of Massachusetts Medical School, LRB Room 323, 364 Plantation Street, Worcester, MA 01605-2324, USA
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Debeer P, Schoenmakers EFPM, Twal WO, Argraves WS, De Smet L, Fryns JP, Van De Ven WJM. The fibulin-1 gene (FBLN1) is disrupted in a t(12;22) associated with a complex type of synpolydactyly. J Med Genet 2002; 39:98-104. [PMID: 11836357 PMCID: PMC1735038 DOI: 10.1136/jmg.39.2.98] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Molecular analysis of the reciprocal chromosomal translocation t(12;22)(p11.2;q13.3) cosegregating with a complex type of synpolydactyly showed involvement of an alternatively spliced exon of the fibulin-1 gene (FBLN1 located in 22q13.3) and the C12orf2 (HoJ-1) gene on the short arm of chromosome 12. Investigation of the possible functional involvement of the fibulin-1 protein (FBLN1) in the observed phenotype showed that FBLN1 is expressed in the extracellular matrix (ECM) in association with the digits in the developing limb. Furthermore, fibroblasts derived from patients with the complex type of synpolydactyly displayed alterations in the level of FBLN1-D splice variant incorporated into the ECM and secreted into the conditioned culture medium. By contrast, the expression of the FBLN1-C splice variant was not perturbed in the patient fibroblasts. Based on these findings, we propose that the t(12;22) results in haploinsufficiency of the FBLN1-D variant, which could lead to the observed limb malformations.
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Affiliation(s)
- P Debeer
- Centre for Human Genetics, Herestraat 49, B-3000 Leuven, Belgium
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46
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Brooke JS, Cha JH, Eidels L. Latent transforming growth factor beta-binding protein-3 and fibulin-1C interact with the extracellular domain of the heparin-binding EGF-like growth factor precursor. BMC Cell Biol 2002; 3:2. [PMID: 11846885 PMCID: PMC65547 DOI: 10.1186/1471-2121-3-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2001] [Accepted: 01/22/2002] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND The membrane-bound cell-surface precursor and soluble forms of heparin-binding epidermal growth factor-like growth factor (HB-EGF) contribute to many cellular developmental processes. The widespread occurrence of HB-EGF in cell and tissue types has led to observations of its role in such cellular and tissue events as tumor formation, cell migration, extracellular matrix formation, wound healing, and cell adherence. Several studies have reported the involvement of such extracellular matrix proteins as latent transforming growth factor beta-binding protein, TGF-beta, and fibulin-1 in some of these processes. To determine whether HB-EGF interacts with extracellular matrix proteins we used the extracellular domain of proHB-EGF in a yeast two-hybrid system to screen a monkey kidney cDNA library. cDNA clones containing nucleotide sequences encoding domains of two proteins were obtained and their derived amino acid sequences were evaluated. RESULTS From approximately equal to 3 x 10(6) screened monkey cDNA clones, cDNA clones were recovered that contained nucleotide sequences encoding domains of the monkey latent transforming growth factor-beta binding protein-3 (MkLTBP-3) and fibulin-1C protein. The amino acid sequence derived from the MkLTBP-3 gene shared 98.6% identity with human LTBP-3 and 86.7% identity with mouse LTBP-3 amino acid sequences. The amino acid sequence derived from the monkey fibulin-1C gene shared 97.2% identity with human fibulin-1C. Yeast two-hybrid screens indicate that LTBP-3 and fibulin-1C interact with proHB-EGF through their calcium-binding EGF-like modules. CONCLUSIONS The interactions of the extracellular domain of proHB-EGF with LTBP-3 and fibulin-1C suggest novel functions for HB-EGF between cell and tissue surfaces.
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Affiliation(s)
- Joanna S Brooke
- Present adress: Dept of Biological Science, Depaul University, Chicago, Il 60614, USA
| | - Jeong-Heon Cha
- Department of Microbiology, The University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, Texas 75390-9048, USA
| | - Leon Eidels
- Department of Microbiology, The University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, Texas 75390-9048, USA
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Ohsawa I, Takamura C, Kohsaka S. Fibulin-1 binds the amino-terminal head of beta-amyloid precursor protein and modulates its physiological function. J Neurochem 2001; 76:1411-20. [PMID: 11238726 DOI: 10.1046/j.1471-4159.2001.00144.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Genetic studies have implicated amyloid precursor protein (APP) in the pathogenesis of Alzheimer's disease. While accumulating lines of evidence indicate that APP has various functions in cells, little is known about the proteins that modulate its biological activity. Toward this end, we employed a two-hybrid system to identify potential interacting factors. We now report that fibulin-1, which contains repetitive Ca(2+)-binding EGF-like elements, binds to APP at its amino-terminal growth factor-like domain, the region that is responsible for its neurotrophic activities. Fibulin-1 expression in the brain is confined to neurons, and is not expressed significantly by astrocytes or microglia. Direct binding of fibulin-1 to the secreted form of APP (sAPP) was demonstrated with a pull-down assay using fragments of both fibulin-1 fused with glutathione-S transferase and sAPP, produced in bacteria and yeast, respectively. The fibulin-1/sAPP heteromer was shown to form in the conditioned medium of transfected COS-7 cells. Furthermore, fibulin-1 blocks sAPP-mediated proliferation of primary cultured rat neural stem cells. These results suggest that fibulin-1 may play a significant role in modulating the neurotrophic activities of APP.
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Affiliation(s)
- I Ohsawa
- Department of Neurochemistry, National Institute of Neuroscience, Kodaira, Tokyo, Japan
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48
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Gallagher WM, Greene LM, Ryan MP, Sierra V, Berger A, Laurent-Puig P, Conseiller E. Human fibulin-4: analysis of its biosynthetic processing and mRNA expression in normal and tumour tissues. FEBS Lett 2001; 489:59-66. [PMID: 11231014 DOI: 10.1016/s0014-5793(00)02389-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Here, we report the identification of a human orthologue of fibulin-4, along with analysis of its biosynthetic processing and mRNA expression levels in normal and tumour tissues. Comparative sequence analysis of fibulin-4 cDNAs revealed apparent polymorphisms in the signal sequence that could account for previously reported inefficient secretion in fibulin-4 transfectants. In vitro translation of fibulin-4 mRNA revealed the presence of full-length and truncated polypeptides, the latter apparently generated from an alternative translation initiation site. Since this polypeptide failed to incorporate into endoplasmic reticulum membrane preparations, it was concluded that it lacked a signal sequence and thus could represent an intracellular form of fibulin-4. Using fluorescence in situ hybridisation analysis, the human fibulin-4 gene was localised to chromosome 11q13, this region being syntenic to portions of mouse chromosomes 7 and 19. Considering the fact that translocations, amplifications and other rearrangements of the 11q13 region are associated with a variety of human cancers, the expression of human fibulin-4 was evaluated in a series of colon tumours. Reverse transcription-polymerase chain reaction analysis of RNA from paired human colon tumour and adjacent normal tissue biopsies showed that a significant proportion of tumours had approximately 2-7-fold increases in the level of fibulin-4 mRNA expression. Taken together, results reported here suggest that an intracellular form of fibulin-4 protein may exist and that dysregulated expression of the fibulin-4 gene is associated with human colon tumourigenesis.
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Affiliation(s)
- W M Gallagher
- Conway Institute of Biomolecular and Biomedical Research, Department of Pharmacology, University College Dublin, Belfield, Ireland.
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49
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Robinson PN, Godfrey M. The molecular genetics of Marfan syndrome and related microfibrillopathies. J Med Genet 2000; 37:9-25. [PMID: 10633129 PMCID: PMC1734449 DOI: 10.1136/jmg.37.1.9] [Citation(s) in RCA: 207] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Mutations in the gene for fibrillin-1 (FBN1) have been shown to cause Marfan syndrome, an autosomal dominant disorder of connective tissue characterised by pleiotropic manifestations involving primarily the ocular, skeletal, and cardiovascular systems. Fibrillin-1 is a major component of the 10-12 nm microfibrils, which are thought to play a role in tropoelastin deposition and elastic fibre formation in addition to possessing an anchoring function in some tissues. Fibrillin-1 mutations have also been found in patients who do not fulfil clinical criteria for the diagnosis of Marfan syndrome, but have related disorders of connective tissue, such as isolated ectopia lentis, familial aortic aneurysm, and Marfan-like skeletal abnormalities, so that Marfan syndrome may be regarded as one of a range of type 1 fibrillinopathies. There appear to be no particular hot spots since mutations are found throughout the entire fibrillin-1 gene. However, a clustering of mutations associated with the most severe form of Marfan syndrome, neonatal Marfan syndrome, has been noted in a region encompassing exons 24 to 32. The gene for fibrillin-2 (FBN2) is highly homologous to FBN1, and mutations in FBN2 have been shown to cause a phenotypically related disorder termed congenital contractural arachnodactyly. Since mutations in the fibrillin genes are likely to affect the global function of the microfibrils, the term microfibrillopathy may be the most appropriate to designate the spectrum of disease associated with dysfunction of these molecules. The understanding of the global and the molecular functions of the fibrillin containing microfibrils is still incomplete and, correspondingly, no comprehensive theory of the pathogenesis of Marfan syndrome has emerged to date. Many, but not all, fibrillin-1 gene mutations are expected to exert a dominant negative effect, whereby mutant fibrillin monomers impair the global function of the microfibrils. In this paper we review the molecular physiology and pathophysiology of Marfan syndrome and related microfibrillopathies.
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Affiliation(s)
- P N Robinson
- Laboratory of Paediatric Molecular Biology, Department of General Paediatrics, Charité University Hospital, Humboldt University, D-10098 Berlin, Germany
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50
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Giltay R, Timpl R, Kostka G. Sequence, recombinant expression and tissue localization of two novel extracellular matrix proteins, fibulin-3 and fibulin-4. Matrix Biol 1999; 18:469-80. [PMID: 10601734 DOI: 10.1016/s0945-053x(99)00038-4] [Citation(s) in RCA: 114] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Fibulin-1 and fibulin-2 have previously been identified as basement membrane and microfibrillar proteins with a broad binding repertoire for other extracellular ligands. Here we report on the cloning and sequence analysis of human fibulin-3 (487 residues), also known as protein S1-5, and fibulin-4 (443 residues). These novel members of this protein family are most closely related to fibulin-1C. They consist of a C-terminal globular domain III, also shared by the fibrillins, a central rod-like element composed of five calcium-binding epidermal growth factor-like (EG) modules (domain II) and an N-terminal interrupted EG module (domain I) which replaces the anaphylatoxin-like modules of the other fibulins. This predicted domain structure was supported by electron microscopy of fibulin-4, which demonstrated short rods. Northern blots showed that both novel fibulins are expressed in several human tissues to a variable extent and that they are up-regulated in quiescent fibroblasts. Specific antibodies which were raised against each of the novel fibulins did not cross-react with fibulin-1. Immunohistology of adult mouse tissues showed that fibulin-3, fibulin-4 and fibulin-1 have overlapping but distinct extracellular tissue localizations. A particularly prominent feature was the staining of variable sets of large and small blood vessels.
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Affiliation(s)
- R Giltay
- Max-Planck-Institut für Biochemie, Martinsried, Germany
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