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Kumar M, Patel K, Chinnapparaj S, Sharma T, Aggarwal A, Singla N, Karthigeyan M, Singh A, Sahoo SK, Tripathi M, Takkar A, Gupta T, Pal A, Attri SV, Bansal YS, Ratho RK, Gupta SK, Khullar M, Vashishta RK, Mukherjee KK, Grover VK, Prasad R, Chatterjee A, Gowda H, Bhagat H. Dysregulated Genes and Signaling Pathways in the Formation and Rupture of Intracranial Aneurysm. Transl Stroke Res 2024; 15:865-879. [PMID: 37644376 DOI: 10.1007/s12975-023-01178-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 03/21/2023] [Accepted: 07/10/2023] [Indexed: 08/31/2023]
Abstract
Intracranial aneurysm (IA) has the potential to rupture. Despite scientific advances, we are still not in a position to screen patients for IA and identify those at risk of rupture. It is critical to comprehend the molecular basis of disease to facilitate the development of novel diagnostic strategies. We used transcriptomics to identify the dysregulated genes and understand their role in the disease biology. In particular, RNA-Seq was performed in tissue samples of controls, unruptured IA, and ruptured IA. Dysregulated genes (DGs) were identified and analyzed to understand the functional aspects of molecules. Subsequently, candidate genes were validated at both transcript and protein level. There were 314 DGs in patients with unruptured IA when compared to control samples. Out of these, SPARC and OSM were validated as candidate molecules in unruptured IA. PI3K-AKT signaling pathway was found to be an important pathway for the formation of IA. Similarly, 301 DGs were identified in the samples of ruptured IA when compared with unruptured IAs. CTSL was found to be a key candidate molecule which along with Hippo signaling pathway may be involved in the rupture of IA. We conclude that activation of PI3K-AKT signaling pathway by OSM along with up-regulation of SPARC is important for the formation of IA. Further, regulation of Hippo pathway through PI3K-AKT signaling results in the down-regulation of YAP1 gene. This along with up-regulation of CTSL leads to further weakening of aneurysm wall and its subsequent rupture.
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Affiliation(s)
- Munish Kumar
- Division of Neuro-anesthesia, Department of Anesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Krishna Patel
- Institute of Bioinformatics, International Tech Park, Bangalore, India
| | - Shobia Chinnapparaj
- Division of Neuro-anesthesia, Department of Anesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Tanavi Sharma
- Division of Neuro-anesthesia, Department of Anesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ashish Aggarwal
- Department of Neurosurgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Navneet Singla
- Department of Neurosurgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Madhivanan Karthigeyan
- Department of Neurosurgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Apinderpreet Singh
- Department of Neurosurgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Sushanta Kumar Sahoo
- Department of Neurosurgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Manjul Tripathi
- Department of Neurosurgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Aastha Takkar
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Tulika Gupta
- Department of Anatomy, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Arnab Pal
- Department of Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Savita Verma Attri
- Pediatric Biochemistry, Department of Pediatrics, Advanced Pediatrics Centre, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Yogender Singh Bansal
- Department of Forensic Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Radha Kanta Ratho
- Department of Virology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Sunil K Gupta
- Department of Neurosurgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Madhu Khullar
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Rakesh Kumar Vashishta
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Kanchan Kumar Mukherjee
- Department of Neurosurgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Vinod Kumar Grover
- Division of Neuro-anesthesia, Department of Anesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Rajendra Prasad
- Department of Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Aditi Chatterjee
- Institute of Bioinformatics, International Tech Park, Bangalore, India
| | - Harsha Gowda
- Institute of Bioinformatics, International Tech Park, Bangalore, India
| | - Hemant Bhagat
- Division of Neuro-anesthesia, Department of Anesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
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Miller LR, Bickel MA, Vance ML, Vaden H, Nagykaldi D, Nyul-Toth A, Bullen EC, Gautam T, Tarantini S, Yabluchanskiy A, Kiss T, Ungvari Z, Conley SM. Vascular smooth muscle cell-specific Igf1r deficiency exacerbates the development of hypertension-induced cerebral microhemorrhages and gait defects. GeroScience 2024; 46:3481-3501. [PMID: 38388918 PMCID: PMC11009188 DOI: 10.1007/s11357-024-01090-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 02/03/2024] [Indexed: 02/24/2024] Open
Abstract
Cerebrovascular fragility and cerebral microhemorrhages (CMH) contribute to age-related cognitive impairment, mobility defects, and vascular cognitive impairment and dementia, impairing healthspan and reducing quality of life in the elderly. Insulin-like growth factor 1 (IGF-1) is a key vasoprotective growth factor that is reduced during aging. Circulating IGF-1 deficiency leads to the development of CMH and other signs of cerebrovascular dysfunction. Here our goal was to understand the contribution of IGF-1 signaling on vascular smooth muscle cells (VSMCs) to the development of CMH and associated gait defects. We used an inducible VSMC-specific promoter and an IGF-1 receptor (Igf1r) floxed mouse line (Myh11-CreERT2 Igf1rf/f) to knockdown Igf1r. Angiotensin II in combination with L-NAME-induced hypertension was used to elicit CMH. We observed that VSMC-specific Igf1r knockdown mice had accelerated development of CMH, and subsequent associated gait irregularities. These phenotypes were accompanied by upregulation of a cluster of pro-inflammatory genes associated with VSMC maladaptation. Collectively our findings support an essential role for VSMCs as a target for the vasoprotective effects of IGF-1, and suggest that VSMC dysfunction in aging may contribute to the development of CMH.
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Affiliation(s)
- Lauren R Miller
- Department of Cell Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, BMSB 553, Oklahoma City, OK, 73104, USA
- Currently at: Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, 73104, USA
| | - Marisa A Bickel
- Department of Cell Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, BMSB 553, Oklahoma City, OK, 73104, USA
| | - Michaela L Vance
- Department of Cell Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, BMSB 553, Oklahoma City, OK, 73104, USA
| | - Hannah Vaden
- Department of Cell Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, BMSB 553, Oklahoma City, OK, 73104, USA
| | - Domonkos Nagykaldi
- Department of Cell Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, BMSB 553, Oklahoma City, OK, 73104, USA
| | - Adam Nyul-Toth
- Vascular Cognitive Impairment and Neurodegeneration Program, Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
- International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine/Department of Public Health, Semmelweis University, Budapest, Hungary
| | - Elizabeth C Bullen
- Department of Cell Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, BMSB 553, Oklahoma City, OK, 73104, USA
| | - Tripti Gautam
- Vascular Cognitive Impairment and Neurodegeneration Program, Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Stefano Tarantini
- Vascular Cognitive Impairment and Neurodegeneration Program, Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
- The Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Department of Health Promotion Sciences, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Andriy Yabluchanskiy
- Vascular Cognitive Impairment and Neurodegeneration Program, Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Tamas Kiss
- Pediatric Center, Semmelweis University, Budapest, Hungary
- Eötvös Loránd Research Network and Semmelweis University Cerebrovascular and Neurocognitive Disorders Research Group, Budapest, Hungary
| | - Zoltan Ungvari
- Vascular Cognitive Impairment and Neurodegeneration Program, Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
- International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine/Department of Public Health, Semmelweis University, Budapest, Hungary
- The Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Shannon M Conley
- Department of Cell Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, BMSB 553, Oklahoma City, OK, 73104, USA.
- Vascular Cognitive Impairment and Neurodegeneration Program, Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA.
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Zhou H, Khan D, Hussain SM, Gerdes N, Hagenbeck C, Rana M, Cornelius JF, Muhammad S. Colchicine prevents oxidative stress-induced endothelial cell senescence via blocking NF-κB and MAPKs: implications in vascular diseases. J Inflamm (Lond) 2023; 20:41. [PMID: 38001470 PMCID: PMC10675905 DOI: 10.1186/s12950-023-00366-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND Smoking, alcohol abuse, and hypertension are - among others, potential risk factors for cardiovascular diseases. These risk factors generate oxidative stress and cause oxidative stress-induced DNA damage, resulting in cellular senescence and senescence-associated secretory phenotype (SASP). The SASP factors in feed-forward response exacerbate inflammation and cause tissue remodeling, resulting in atherosclerotic plaque formation and rupture. RESULTS Colchicine inhibited ROS generation and mitigated oxidative stress-induced DNA damage. It dampened oxidative stress-induced endothelial cell senescence and improved the expression of DNA repair protein KU80 and aging marker Lamin B1. The drug attenuated the expression of senescence marker P21 at mRNA and protein levels. The pathway analysis showed that colchicine inhibited NF-κB and MAPKs pathways and subdued mTOR activation. Colchicine also attenuated mRNA expression of interleukin (IL)-1β, IL-6, IL-8, MCP-1, ICAM-1, and E-selectin. Furthermore, colchicine reduced the mRNA and protein expression of matrix metalloproteinase (MMP-2). CONCLUSION In summary, colchicine blocked oxidative stress-induced senescence and SASP by inhibiting the activation of NF-κB and MAPKs pathways.
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Affiliation(s)
- Huakang Zhou
- Department of Neurosurgery, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine- Universität Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Dilaware Khan
- Department of Neurosurgery, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine- Universität Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany.
| | - Sajid Muhammad Hussain
- Cologne Center for Genomics (CCG), University of Cologne, Weyertal 115b, 50931, Cologne, Germany
| | - Norbert Gerdes
- Division of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty and University Hospital, Heinrich-Heine-University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
- Cardiovascular Reasearch Institute Düsseldorf (CARID), Medical Faculty, Heinrich-Heine- University Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Carsten Hagenbeck
- Clinic for Gynecology and Obstetrics, Medical Faculty, Heinrich-Heine University Düsseldorf, 40225, Düsseldorf, Germany
| | - Majeed Rana
- Department of Oral-, Maxillofacial and Facial Plastic Surgery, University Hospital Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Jan Frederick Cornelius
- Department of Neurosurgery, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine- Universität Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Sajjad Muhammad
- Department of Neurosurgery, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine- Universität Düsseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
- Department of Neurosurgery, University Hospital Helsinki, Topeliuksenkatu 5, Helsinki, 00260, Finland
- Department of Neurosurgery, King Edward Medical University, Lahore, Pakistan
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Nakajima H, Kawakita F, Oinaka H, Suzuki Y, Nampei M, Kitano Y, Nishikawa H, Fujimoto M, Miura Y, Yasuda R, Toma N, Suzuki H. Plasma SPARC Elevation in Delayed Cerebral Ischemia After Aneurysmal Subarachnoid Hemorrhage. Neurotherapeutics 2023; 20:779-788. [PMID: 36781745 PMCID: PMC10275842 DOI: 10.1007/s13311-023-01351-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2023] [Indexed: 02/15/2023] Open
Abstract
Matricellular proteins have been implicated in pathologies after subarachnoid hemorrhage (SAH). To find a new therapeutic molecular target, the present study aimed to clarify the relationships between serially measured plasma levels of a matricellular protein, secreted protein acidic and rich in cysteine (SPARC), and delayed cerebral ischemia (DCI) in 117 consecutive aneurysmal SAH patients with admission World Federation of Neurological Surgeons (WFNS) grades I-III. DCI developed in 25 patients with higher incidences of past history of hypertension and dyslipidemia, preoperative WFNS grade III, modified Fisher grade 4, spinal drainage, and angiographic vasospasm. Plasma SPARC levels were increased after SAH, and significantly higher in patients with than without DCI at days 7-9, and in patients with VASOGRADE-Yellow compared with VASOGRADE-Green at days 1-3 and 7-9. However, there were no relationships between plasma SPARC levels and angiographic vasospasm. Receiver-operating characteristic curves differentiating DCI from no DCI determined the cut-off value of plasma SPARC ≥ 82.1 ng/ml at days 7 - 9 (sensitivity, 0.800; specificity, 0.533; and area under the curve, 0.708), which was found to be an independent determinant of DCI development in multivariate analyses. This is the first study to show that SPARC is upregulated in peripheral blood after SAH, and that SPARC may be involved in the development of DCI without angiographic vasospasm in a clinical setting.
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Affiliation(s)
- Hideki Nakajima
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Fumihiro Kawakita
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hiroki Oinaka
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yume Suzuki
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Mai Nampei
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yotaro Kitano
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hirofumi Nishikawa
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Masashi Fujimoto
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Yoichi Miura
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Ryuta Yasuda
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Naoki Toma
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hidenori Suzuki
- Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Japan.
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Epithelial-mesenchymal transition related genes in unruptured aneurysms identified through weighted gene coexpression network analysis. Sci Rep 2022; 12:225. [PMID: 34997174 PMCID: PMC8741966 DOI: 10.1038/s41598-021-04390-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/21/2021] [Indexed: 11/08/2022] Open
Abstract
Intracranial aneurysm (IA) can cause fatal subarachnoid hemorrhage (SAH) after rupture, and identifying patients with unruptured IAs is essential for reducing SAH fatalities. The epithelial-mesenchymal transition (EMT) may be vital to IA progression. Here, identified key EMT-related genes in aneurysms and their pathogenic mechanisms via bioinformatic analysis. The GSE13353, GSE75436, and GSE54083 datasets from Gene Expression Omnibus were analyzed with limma to identify differentially expressed genes (DEGs) among unruptured aneurysms, ruptured aneurysms, and healthy samples. The results revealed that three EMT-related DEGs (ADIPOQ, WNT11, and CCL21) were shared among all groups. Coexpression modules and hub genes were identified via weighted gene co-expression network analysis, revealing two significant modules (red and green) and 14 EMT-related genes. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses suggested that cytokine interactions were closely related. Gene set enrichment analysis revealed that unruptured aneurysms were enriched for the terms "inflammatory response" and "vascular endothelial growth". Protein-protein interaction analysis identified seven key genes, which were evaluated with the GSE54083 dataset to determine their sensitivity and specificity. In the external validation set, we verified the differential expression of seven genes in unruptured aneurysms and normal samples. Together, these findings indicate that FN1, and SPARC may help distinguish normal patients from patients with asymptomatic IAs.
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Gao Y, Zhao C, Wang J, Li H, Yang B. The potential biomarkers for the formation and development of intracranial aneurysm. J Clin Neurosci 2020; 81:270-278. [PMID: 33222929 DOI: 10.1016/j.jocn.2020.09.072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/28/2020] [Indexed: 01/18/2023]
Abstract
This study is aimed to understand the pathogenesis of intracranial aneurysm (IA), which has a risk of rupture and is the primary cause of subarachnoid hemorrhage. From Gene Expression Omnibus (GEO) database, GSE75436 was extracted (15 IA tissues and 15 superficial temporal artery tissues). The differentially expressed genes (DEGs) was conducted through limma package, which followed by the enrichment analysis. Combining STRING database, protein-protein interaction (PPI) network was constructed. The modules in PPI network were performed utilizing molecular complex detection (MCODE) algorithm. With Cytoscape software, the transcription factor-miRNA-target regulatory network was constructed. Finally, microarray dataset GSE54083 was downloaded (13 IA tissues and 10 superficial temporal artery tissues) for the verification test. A total of 1332 DEGs were screened in IA tissues compared with superficial temporal artery tissues. Besides, the up-regulated TNF, IL10, IL1B, and CTSS, as well as down-regulated IL6 were included in the top 20 nodes in the PPI networks. Furthermore, in the module A of up-regulated PPI network, TNF, IL10, IL1B, and VCAM1 were interact with each other. In the regulatory network, miR-29A/B/C targeted up-regulated genes. Besides, VCAM1 was implicated in the pathway of leukocyte transendothelial migration. In the verification analysis, between GSE75436 and GSE54083, there were 444 up-regulated and 543 down-regulated co-existence DEGs and 11 co-existence genes involved the Leukocyte transendothelial migration pathway. VCAM1, TNF, CTSS, IL10, IL1B, IL6, and miR-29A/B/C might be the potential biomarkers for the formation and development of IA.
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Affiliation(s)
- Yuyuan Gao
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Erqi District, Zhengzhou 450052, Henan, China; The Academy of Medical Sciences, Zhengzhou University, No. 40 University North Road, Erqi District, Zhengzhou 450052, Henan, China
| | - Chengbin Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Erqi District, Zhengzhou 450052, Henan, China
| | - Jing Wang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Erqi District, Zhengzhou 450052, Henan, China; The Academy of Medical Sciences, Zhengzhou University, No. 40 University North Road, Erqi District, Zhengzhou 450052, Henan, China
| | - Hongwei Li
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Erqi District, Zhengzhou 450052, Henan, China.
| | - Bo Yang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Erqi District, Zhengzhou 450052, Henan, China.
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Tan X, Li T, Zhu S, Zhong W, Li F, Wang Y. Induction of SPARC on Oxidative Stress, Inflammatory Phenotype Transformation, and Apoptosis of Human Brain Smooth Muscle Cells Via TGF-β1-NOX4 Pathway. J Mol Neurosci 2020; 70:1728-1741. [PMID: 32495004 DOI: 10.1007/s12031-020-01566-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Accepted: 04/22/2020] [Indexed: 11/30/2022]
Abstract
Secreted protein acidic and rich in cysteine (SPARC) has a close association with inflammatory response and oxidative stress in tissues and is widely expressed in intracranial aneurysms (IAs), especially in smooth muscle cells. Therefore, it is inferred that SPARC might be involved in the formation and development of IAs through the inflammatory response pathway or oxidative stress pathway. The aim of this study is to investigate the pathological mechanism of SPARC in oxidative stress, inflammation, and apoptosis during the formation of IAs, as well as the involvement of TGF-β1 and NOX4 molecules. Human brain vascular smooth muscle cells (HBVSMCs) were selected as experimental objects. After the cells were stimulated by recombinant human SPARC protein in vitro, the ROS level in the cells was measured using an ID/ROS fluorescence analysis kit combined with fluorescence microscope and flow cytometry. The related protein expression in HBVSMCs was measured using western blotting. The mitochondrial membrane potential change was detected using a mitochondrial membrane potential kit and laser confocal microscope. The mechanism was explored by intervention with reactive oxygen scavengers N-acetylcysteine (NAC), TGF-β1 inhibitor (SD-208), and siRNA knockout. The results showed that SPARC upregulated the expression of NOX4 through the TGF-β1-dependent signaling pathway, leading to oxidative stress and pro-inflammatory matrix behavior and apoptosis in HBVSMCs. These findings demonstrated that SPARC may promote the progression of IAs.
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Affiliation(s)
- Xianjun Tan
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Neurosurgery, People's Hospital of Chiping City, Liaocheng City, Shandong Province, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan, Shandong Province, China
| | - Tao Li
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan, Shandong Province, China.,Department of Neurosurgery, the No.4 People's Hospital of Jinan, Jinan City, Shandong Province, China
| | - Shaowei Zhu
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan, Shandong Province, China
| | - Weiying Zhong
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan, Shandong Province, China
| | - Feng Li
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yunyan Wang
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China. .,Shandong Key Laboratory of Brain Function Remodeling, Jinan, Shandong Province, China.
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8
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Zou L, Hou Y, Yu B, Li S, Du Y. The effect of intravascular interventional embolization and craniotomy on MMP-2, MMP-9 and caspase3 in serum of intracranial aneurysm patients. Exp Ther Med 2018; 16:4511-4518. [PMID: 30542399 PMCID: PMC6257825 DOI: 10.3892/etm.2018.6740] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 09/05/2018] [Indexed: 01/28/2023] Open
Abstract
The effect of intravascular interventional embolization and surgical operation on matrix metalloprotein (MMP)-2, MMP-9 and caspase3 in serum of intracranial aneurysms was analyzed to study the mechanisms. Seventy-nine patients of intracranial aneurysms from September 2011 to August 2014 were divided into the intervention group (n=41) and the craniotomy group (n=38) based on treatment methods, and 40 cases of normal volunteers with normal physical examination were selected as the control group. Patients in the intervention group were treated with intravascular interventional embolization, and the surgical group was treated with craniotomy and no treatment was performed in the control group. The survival rate and adverse reaction rate were calculated. ELISA kit was used to detect the level of reactive oxygen species (ROS), interleukin-6 (IL-6), tumor necrosis factor (TNF-α) and IL-10 in serum; the mRNA and protein expression levels of MMP-2, MMP-9 and caspase3 in serum were detected by qPCR and western blotting; the protein expression levels of p-adenosine 5′-monophosphate (AMP)-activated protein kinase (AMPK), Bcl-2 and Bax were also detected. The survival rate of patients in the intervention group was significantly higher than that in the craniotomy group (P<0.05). The ROS level in the intervention and craniotomy groups was significantly higher than that in the control group (P<0.01), while the levels of IL-6 and TNF-α in the serum of the intervention group were lower than those in the craniotomy group (P<0.01). The mRNA and protein expression of MMP-2, MMP-9 and caspase3 of the intervention group was significantly lower than that of the craniotomy group (P<0.01). The protein expression of p-AMPK and Bcl-2/Bax in the intervention group were lower than that in the craniotomy group (P<0.01). Intravascular interventional surgery can significantly increase the patient's survival time, and effectively reduce the expression of MMP-2, MMP-9 and caspase3 in the serum of intracranial aneurysm patients. The mechanism may be through the impact of ROS levels, thereby affecting the p-AMPK and Bcl2/Bax expression.
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Affiliation(s)
- Liang Zou
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China.,Department of Neurosurgery, The Second Clinical Medical School of Inner Mongolia University for Nationalities, Hulunbuir, Inner Mongolia 022150, P.R. China
| | - Yanyan Hou
- Department of Hematology and Oncology, The Second Clinical Medical School of Inner Mongolia University for Nationalities, Hulunbuir, Inner Mongolia 022150, P.R. China
| | - Baixiang Yu
- Department of Neurosurgery, The Second Clinical Medical School of Inner Mongolia University for Nationalities, Hulunbuir, Inner Mongolia 022150, P.R. China
| | - Shuang Li
- Department of Neurosurgery, The Second Clinical Medical School of Inner Mongolia University for Nationalities, Hulunbuir, Inner Mongolia 022150, P.R. China
| | - Yanli Du
- Department of Neurosurgery, Hulunbeier People's Hospital, Hulunbuir, Inner Mongolia 021000, P.R. China
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Alg VS, Ke X, Grieve J, Bonner S, Walsh DC, Bulters D, Kitchen N, Houlden H, Werring DJ. Association of functional MMP-2 gene variant with intracranial aneurysms: case-control genetic association study and meta-analysis. Br J Neurosurg 2018; 32:255-259. [PMID: 29334797 DOI: 10.1080/02688697.2018.1427213] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 11/30/2017] [Accepted: 01/09/2018] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Abnormalities in Matrix Metalloproteinase (MMP) genes, which are important in extracellular matrix (ECM) maintenance and therefore arterial wall integrity are a plausible underlying mechanism of intracranial aneurysm (IA) formation, growth and subsequent rupture. We investigated whether the rs243865 C > T SNP (single nucleotide polymorphism) within the MMP-2 gene (which influences gene transcription) is associated with IA compared to matched controls. MATERIALS AND METHODS We conducted a case-control genetic association study, adjusted for known IA risk factors (smoking and hypertension), in a UK Caucasian population of 1409 patients with intracranial aneurysms (IA), and 1290 matched controls, to determine the association of the rs243865 C > T functional MMP-2 gene SNP with IA (overall, and classified as ruptured and unruptured). We also undertook a meta-analysis of two previous studies examining this SNP. RESULTS The rs243865 T allele was associated with IA presence in univariate (OR 1.18 [95% CI 1.04-1.33], p = .01) and in multi-variable analyses adjusted for smoking and hypertension status (OR 1.16 [95% CI 1.01-1.35], p = .042). Subgroup analysis demonstrated an association of the rs243865 SNP with ruptured IA (OR 1.18 [95% CI 1.03-1.34] p = .017), but, not unruptured IA (OR 1.17 [95% CI 0.97-1.42], p = .11). CONCLUSIONS Our study demonstrated an association between the functional MMP-2 rs243865 variant and IAs. Our findings suggest a genetic role for altered extracellular matrix integrity in the pathogenesis of IA development and rupture.
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Affiliation(s)
- Varinder S Alg
- a Stroke Research Centre, Department of Brain Repair and Rehabilitation , Institute of Neurology, National Hospital for Neurology and Neurosurgery , London , UK
| | - Xiayi Ke
- b Institute of Child Health, Genetics & Genomic Medicine Programme , Institute of Child Health, Faculty of Pop Health Sciences, UCL , London , UK
| | - Joan Grieve
- a Stroke Research Centre, Department of Brain Repair and Rehabilitation , Institute of Neurology, National Hospital for Neurology and Neurosurgery , London , UK
| | - Stephen Bonner
- c Department of Neuroanaesthesia , James Cook University Hospital, Durham University , London , UK
| | - Daniel C Walsh
- d Department of Neurosurgery, Neurovascular Surgery , Kings College Hospital , London , UK
| | - Diederik Bulters
- e Department of Neurovascular Surgery , University Hospital Southampton , Southampton , UK
| | - Neil Kitchen
- a Stroke Research Centre, Department of Brain Repair and Rehabilitation , Institute of Neurology, National Hospital for Neurology and Neurosurgery , London , UK
| | - Henry Houlden
- a Stroke Research Centre, Department of Brain Repair and Rehabilitation , Institute of Neurology, National Hospital for Neurology and Neurosurgery , London , UK
| | - David J Werring
- a Stroke Research Centre, Department of Brain Repair and Rehabilitation , Institute of Neurology, National Hospital for Neurology and Neurosurgery , London , UK
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10
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Li W, Ma L, Tian C. Overexpression of particularly interesting new cys-his rich protein (PINCH) is a risk factor for growth of unruptured intracranial aneurysms. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:2636-2641. [PMID: 31938378 PMCID: PMC6958234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 02/24/2018] [Indexed: 06/10/2023]
Abstract
Particularly interesting new cys-his rich protein (PINCH), as an adaptor protein, regulates matrix deposition, cell proliferation, invasion, and metastasis. PINCH plays an important role for tumorigenesis and progression. However, the contributions of PINCH to intracranial aneurysms (IA) remain largely unknown. In our study, we demonstrated that PINCH expression was significantly increased in IA samples compared with healthy controls. The size of IA had a remarkable correlation with PINCH expression. However, PINCH expression had no obvious difference among different Hunt-Hess grades. In addition, the expressions of MMP-2 and MMP-9 were significantly increased in IA tissues compared with healthy controls; moreover, PINCH expression in IA tissues was significantly correlated with MMP-2 and MMP-9 expression. In conclusion, these results suggest that PINCH might play a role similar to MMP-2 and MMP-9 in the pathogenesis of IA. PINCH might be a risk factor for growth of unruptured IA, and this might be a target for diagnosis and therapy of IA.
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Affiliation(s)
- Wei Li
- Department of Ultrasonography, Tianjin Huanhu HospitalTianjin 300350, China
| | - Lin Ma
- Department of Neurosurgery, Tianjin Huanhu HospitalTianjin 300350, China
| | - Chao Tian
- Department of Medical Imaging, Tianjin Huanhu HospitalTianjin 300350, China
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11
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Zheng L, Li X, Chou J, Xiang C, Guo Q, Zhang Z, Guo X, Gao L, Xing Y, Xi T. StarD13 3'-untranslated region functions as a ceRNA for TP53INP1 in prohibiting migration and invasion of breast cancer cells by regulating miR-125b activity. Eur J Cell Biol 2017; 97:23-31. [PMID: 29146309 DOI: 10.1016/j.ejcb.2017.11.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 09/21/2017] [Accepted: 11/08/2017] [Indexed: 11/28/2022] Open
Abstract
Competitive endogenous messenger RNA (ceRNA) affects transcription of other RNA molecules by competitively binding common microRNAs. Previous studies have shown that TP53INP1 functions as a suppressor in tumor metastasis. Our study elucidated StarD13 messenger RNA as a ceRNA in regulating migration and invasion of breast cancer cells. MicroRNA-125b was identified to induce metastasis of MCF-7 cells and bind with both StarD13 3'UTR and TP53INP1 3'UTR. Therefore, a ceRNA interaction between StarD13 and TP53INP1 mediated by competitively binding to miR-125b was indicated. Importantly, a microRNA-125b binding site at 4546-4560 nt on StarD13 was verified more vital for this ceRNA interaction. Indirectly regulation of SPARC in inducing metastasis of breast cancer cells by StarD13 via competitively binding with TP53INP1 was further confirmed. In conclusion, our findings demonstrate a ceRNA regulatory network which could give a better understanding of metastatic mechanisms of breast cancer.
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Affiliation(s)
- Lufeng Zheng
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Xiaoman Li
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jinjiang Chou
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Chenxi Xiang
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Qianqian Guo
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Zhiting Zhang
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Xinwei Guo
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Lanlan Gao
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Yingying Xing
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China
| | - Tao Xi
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 210009, China.
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12
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Zhou S, Ambalavanan A, Rochefort D, Xie P, Bourassa CV, Hince P, Dionne-Laporte A, Spiegelman D, Gan-Or Z, Mirarchi C, Zaharieva V, Dupré N, Kobayashi H, Hitomi T, Harada K, Koizumi A, Xiong L, Dion PA, Rouleau GA. RNF213 Is Associated with Intracranial Aneurysms in the French-Canadian Population. Am J Hum Genet 2016; 99:1072-1085. [PMID: 27745834 DOI: 10.1016/j.ajhg.2016.09.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 09/06/2016] [Indexed: 12/14/2022] Open
Abstract
Intracranial aneurysms (IAs) are the result of focal weakness in the artery wall and have a complex genetic makeup. To date, genome-wide association and sequencing studies have had limited success in identifying IA risk factors. Distinct populations, such as the French-Canadian (FC) population, have increased IA prevalence. In our study, we used exome sequencing to prioritize risk variants in a discovery cohort of six FC families affected by IA, and the analysis revealed an increased variation burden for ring finger protein 213 (RNF213). We resequenced RNF213 in a larger FC validation cohort, and association tests on further identified variants supported our findings (SKAT-O, p = 0.006). RNF213 belongs to the AAA+ protein family, and two variants (p.Arg2438Cys and p.Ala2826Thr) unique to affected FC individuals were found to have increased ATPase activity, which could lead to increased risk of IA by elevating angiogenic activities. Common SNPs in RNF213 were also extracted from the NeuroX SNP-chip genotype data, comprising 257 FC IA-affected and 1,988 control individuals. We discovered that the non-ancestral allele of rs6565666 was significantly associated with the affected individuals (p = 0.03), and it appeared as though the frequency of the risk allele had changed through genetic drift. Although RNF213 is a risk factor for moyamoya disease in East Asians, we demonstrated that it might also be a risk factor for IA in the FC population. It therefore appears that the function of RNF213 can be differently altered to predispose distinct populations to dissimilar neurovascular conditions, highlighting the importance of a population's background in genetic studies of heterogeneous disease.
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Affiliation(s)
- Sirui Zhou
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Amirthagowri Ambalavanan
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Human Genetics, McGill University, Montréal, QC H3A 0G4, Canada
| | - Daniel Rochefort
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Pingxing Xie
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Faculty of Medicine, McGill University, Montréal, QC H3A 0G4, Canada
| | - Cynthia V Bourassa
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Pascale Hince
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | | | - Dan Spiegelman
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Ziv Gan-Or
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Human Genetics, McGill University, Montréal, QC H3A 0G4, Canada; Department of Neurology and Neurosurgery, McGill University, Montréal, QC H3A 0G4, Canada
| | - Cathy Mirarchi
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Vessela Zaharieva
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Nicolas Dupré
- Department of Neurological Sciences, Centre Hospitalier Universitaire de Québec, Québec, QC G1V 0A6, Canada; Department of Medicine, Faculty of Medicine, Laval University, Québec, QC G1V 0A6, Canada
| | - Hatasu Kobayashi
- Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Yoshida Konoecho, Kyoto 606-8501, Japan
| | - Toshiaki Hitomi
- Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Yoshida Konoecho, Kyoto 606-8501, Japan
| | - Kouji Harada
- Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Yoshida Konoecho, Kyoto 606-8501, Japan
| | - Akio Koizumi
- Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Yoshida Konoecho, Kyoto 606-8501, Japan
| | - Lan Xiong
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada; Centre de Recherche, Institut Universitaire en Santé Mentale de Montréal, Montréal QC H1N 3M5, Canada
| | - Patrick A Dion
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Neurology and Neurosurgery, McGill University, Montréal, QC H3A 0G4, Canada
| | - Guy A Rouleau
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Neurology and Neurosurgery, McGill University, Montréal, QC H3A 0G4, Canada.
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13
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Secreted Protein Acidic and Rich in Cysteine Modulates Molecular Arterial Homeostasis of Human Arterial Smooth Muscle Cells In Vitro. J Mol Neurosci 2016; 60:509-516. [DOI: 10.1007/s12031-016-0827-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 08/17/2016] [Indexed: 11/27/2022]
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14
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Predicting Abdominal Aortic Aneurysm Target Genes by Level-2 Protein-Protein Interaction. PLoS One 2015; 10:e0140888. [PMID: 26496478 PMCID: PMC4619739 DOI: 10.1371/journal.pone.0140888] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 09/30/2015] [Indexed: 12/22/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is frequently lethal and has no effective pharmaceutical treatment, posing a great threat to human health. Previous bioinformatics studies of the mechanisms underlying AAA relied largely on the detection of direct protein-protein interactions (level-1 PPI) between the products of reported AAA-related genes. Thus, some proteins not suspected to be directly linked to previously reported genes of pivotal importance to AAA might have been missed. In this study, we constructed an indirect protein-protein interaction (level-2 PPI) network based on common interacting proteins encoded by known AAA-related genes and successfully predicted previously unreported AAA-related genes using this network. We used four methods to test and verify the performance of this level-2 PPI network: cross validation, human AAA mRNA chip array comparison, literature mining, and verification in a mouse CaPO4 AAA model. We confirmed that the new level-2 PPI network is superior to the original level-1 PPI network and proved that the top 100 candidate genes predicted by the level-2 PPI network shared similar GO functions and KEGG pathways compared with positive genes.
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15
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Wang C, Qu B, Wang Z, Ju J, Wang Y, Wang Z, Cao P, Wang D. Proteomic identification of differentially expressed proteins in vascular wall of patients with ruptured intracranial aneurysms. Atherosclerosis 2015; 238:201-6. [DOI: 10.1016/j.atherosclerosis.2014.11.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 11/19/2014] [Accepted: 11/27/2014] [Indexed: 01/23/2023]
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16
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Ahi EP, Kapralova KH, Pálsson A, Maier VH, Gudbrandsson J, Snorrason SS, Jónsson ZO, Franzdóttir SR. Transcriptional dynamics of a conserved gene expression network associated with craniofacial divergence in Arctic charr. EvoDevo 2014; 5:40. [PMID: 25419450 PMCID: PMC4240837 DOI: 10.1186/2041-9139-5-40] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 09/17/2014] [Indexed: 12/30/2022] Open
Abstract
Background Understanding the molecular basis of craniofacial variation can provide insights into key developmental mechanisms of adaptive changes and their role in trophic divergence and speciation. Arctic charr (Salvelinus alpinus) is a polymorphic fish species, and, in Lake Thingvallavatn in Iceland, four sympatric morphs have evolved distinct craniofacial structures. We conducted a gene expression study on candidates from a conserved gene coexpression network, focusing on the development of craniofacial elements in embryos of two contrasting Arctic charr morphotypes (benthic and limnetic). Results Four Arctic charr morphs were studied: one limnetic and two benthic morphs from Lake Thingvallavatn and a limnetic reference aquaculture morph. The presence of morphological differences at developmental stages before the onset of feeding was verified by morphometric analysis. Following up on our previous findings that Mmp2 and Sparc were differentially expressed between morphotypes, we identified a network of genes with conserved coexpression across diverse vertebrate species. A comparative expression study of candidates from this network in developing heads of the four Arctic charr morphs verified the coexpression relationship of these genes and revealed distinct transcriptional dynamics strongly correlated with contrasting craniofacial morphologies (benthic versus limnetic). A literature review and Gene Ontology analysis indicated that a significant proportion of the network genes play a role in extracellular matrix organization and skeletogenesis, and motif enrichment analysis of conserved noncoding regions of network candidates predicted a handful of transcription factors, including Ap1 and Ets2, as potential regulators of the gene network. The expression of Ets2 itself was also found to associate with network gene expression. Genes linked to glucocorticoid signalling were also studied, as both Mmp2 and Sparc are responsive to this pathway. Among those, several transcriptional targets and upstream regulators showed differential expression between the contrasting morphotypes. Interestingly, although selected network genes showed overlapping expression patterns in situ and no morph differences, Timp2 expression patterns differed between morphs. Conclusion Our comparative study of transcriptional dynamics in divergent craniofacial morphologies of Arctic charr revealed a conserved network of coexpressed genes sharing functional roles in structural morphogenesis. We also implicate transcriptional regulators of the network as targets for future functional studies. Electronic supplementary material The online version of this article (doi:10.1186/2041-9139-5-40) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ehsan Pashay Ahi
- Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
| | - Kalina Hristova Kapralova
- Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
| | - Arnar Pálsson
- Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland ; Biomedical Center, University of Iceland, Vatnsmýrarvegur 16, 101 Reykjavik, Iceland
| | - Valerie Helene Maier
- Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
| | - Jóhannes Gudbrandsson
- Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
| | - Sigurdur S Snorrason
- Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
| | - Zophonías O Jónsson
- Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland ; Biomedical Center, University of Iceland, Vatnsmýrarvegur 16, 101 Reykjavik, Iceland
| | - Sigrídur Rut Franzdóttir
- Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
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17
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Wang B, Chen K, Xu W, Chen D, Tang W, Xia TS. Integrative genomic analyses of secreted protein acidic and rich in cysteine and its role in cancer prediction. Mol Med Rep 2014; 10:1461-8. [PMID: 24938427 DOI: 10.3892/mmr.2014.2339] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 01/22/2014] [Indexed: 11/06/2022] Open
Abstract
Secreted protein acidic and rich in cysteine (SPARC), also termed osteonectin or basement‑membrane‑40 (BM‑40), is a matrix‑associated protein that elicits changes in cell shape, inhibits cell‑cycle progression and affects the synthesis of extracellular matrix (ECM). The final mature SPARC protein has 286 amino acids with three distinct domains, including an NH2‑terminal acidic domain (NT), follistatin‑like domain (FS) and C terminus domain (EC). The present study identified SPARC genes from 14 vertebrate genomes and revealed that SPARC existed in all types of vertebrates, including fish, amphibians, birds and mammals. In total, 21 single nucleotide polymorphisms (SNPs) causing missense mutations were identified, which may affect the formation of the truncated form of the SPARC protein. The human SPARC gene was found to be expressed in numerous tissues or organs, including in the bone marrow, whole blood, lymph node, thymus, brain, cerebellum, retina, heart, smooth muscle, skeletal muscle, spinal cord, intestine, colon, adipocyte, kidney, liver, pancreas, thyroid, salivary gland, skin, ovary, uterus, placenta, cervix and prostate. When searched in the PrognoScan database, the human SPARC gene was also found to be expressed in bladder, blood, breast, glioma, esophagus, colorectal, head and neck, ovarian, lung and skin cancer tissues. It was revealed that the association between the expression of SPARC and prognosis varied in different types of cancer, and even in the same cancer from different databases. It implied that the function of SPARC in these tumors may be multidimensional, functioning not just as a tumor suppressor or oncogene.
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Affiliation(s)
- Bo Wang
- Department of Medical Oncology, Huangpu Division of the First Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510700, P.R. China
| | - Kai Chen
- Department of Medical Oncology, Huangpu Division of the First Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510700, P.R. China
| | - Wenming Xu
- Department of Internal Medicine, Huangpu Division of the First Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510700, P.R. China
| | - Di Chen
- Department of Medical Oncology, Huangpu Division of the First Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510700, P.R. China
| | - Wei Tang
- Department of Medical Oncology, Huangpu Division of the First Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510700, P.R. China
| | - Tian-Song Xia
- Department of Breast Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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18
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Pu YF, Wang L, Wu HH, Bian H, Hong YY, Wang YX, Guo CB. Generation of homologous cell pairs using the oral lymphatic system. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2014; 7:1563-1571. [PMID: 24817952 PMCID: PMC4014236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
The purpose of this study is to establish in vivo and in vitro models for studying lymphatic metastasis of squamous cell carcinoma (SCC). Three cell lines CAL-27, Tca-83, and HeLa were injected into the tongue of nude mice. Forty days after injection, we could isolate cells of 2 homologous cell lines LN-CAL-27 and LN-HeLa from lymph node metastasis lesions. Then, the homologous cell pairs were compared by the CCK-8 assay, wound healing assay, real-time PCR, western blot, and animal experiments. The results showed that all the three cell lines could be used to establish lymphatic metastasis animal models, and the lymphatic metastasis process was observed clearly. In addition, the homologous cell pairs performed differently from parent lines with respect to biological behavior and lymphatic metastasis-related gene and protein expression. In conclusion, CAL-27, Tca-83, and HeLa cells could be used to simulate the lymphatic metastasis process of oral cancer in vivo. Furthermore, the homologous cell pairs (CAL-27 and LN-CAL-27; HeLa and LN-HeLa) are potential tools for in vitro investigation of the mechanisms underlying metastasis.
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Affiliation(s)
- Yin-Fei Pu
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of StomatologyBeijing, China
| | - Lin Wang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of StomatologyBeijing, China
| | - Huan-Huan Wu
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of StomatologyBeijing, China
| | - Huan Bian
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of StomatologyBeijing, China
| | - Ying-Ying Hong
- Department of Pathology, Peking University School and Hospital of StomatologyBeijing, China
| | - Yi-Xiang Wang
- Central Laboratory, Peking University School and Hospital of StomatologyBeijing, China
| | - Chuan-Bin Guo
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of StomatologyBeijing, China
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19
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Penn DL, Witte SR, Komotar RJ, Sander Connolly E. The role of vascular remodeling and inflammation in the pathogenesis of intracranial aneurysms. J Clin Neurosci 2014; 21:28-32. [DOI: 10.1016/j.jocn.2013.07.004] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Accepted: 07/12/2013] [Indexed: 12/26/2022]
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