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Ambhore NS, Balraj P, Pabelick CM, Prakash YS, Sathish V. Estrogen receptors differentially modifies lamellipodial and focal adhesion dynamics in airway smooth muscle cell migration. Mol Cell Endocrinol 2024; 579:112087. [PMID: 37827228 PMCID: PMC10842142 DOI: 10.1016/j.mce.2023.112087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/21/2023] [Accepted: 10/09/2023] [Indexed: 10/14/2023]
Abstract
Sex-steroid signaling, especially estrogen, has a paradoxical impact on regulating airway remodeling. In our previous studies, we demonstrated differential effects of 17β-estradiol (E2) towards estrogen receptors (ERs: α and β) in regulating airway smooth muscle (ASM) cell proliferation and extracellular matrix (ECM) production. However, the role of ERs and their signaling on ASM migration is still unexplored. In this study, we examined how ERα versus ERβ affects the mitogen (Platelet-derived growth factor, PDGF)-induced human ASM cell migration as well as the underlying mechanisms involved. We used Lionheart-FX automated microscopy and transwell assays to measure cell migration and found that activating specific ERs had differential effects on PDGF-induced ASM cell migration. Pharmacological activation of ERβ or shRNA mediated knockdown of ERα and specific activation of ERβ blunted PDGF-induced cell migration. Furthermore, specific ERβ activation showed inhibition of actin polymerization by reducing the F/G-actin ratio. Using Zeiss confocal microscopy coupled with three-dimensional algorithmic ZEN-image analysis showed an ERβ-mediated reduction in PDGF-induced expressions of neural Wiskott-Aldrich syndrome protein (N-WASP) and actin-related proteins-2/3 (Arp2/3) complex, thereby inhibiting actin-branching and lamellipodia. In addition, ERβ activation also reduces the clustering of actin-binding proteins (vinculin and paxillin) at the leading edge of ASM cells. However, cells treated with E2 or ERα agonists do not show significant changes in actin/lamellipodial dynamics. Overall, these findings unveil the significance of ERβ activation in regulating lamellipodial and focal adhesion dynamics to regulate ASM cell migration and could be a novel target to blunt airway remodeling.
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Affiliation(s)
| | - Premanand Balraj
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND, USA
| | - Christina M Pabelick
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Y S Prakash
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Venkatachalem Sathish
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND, USA.
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Li S, Gao Z, Li H, Xu C, Chen B, Zha Q, Yang K, Wang W. Hif-1α/Slit2 Mediates Vascular Smooth Muscle Cell Phenotypic Changes in Restenosis of Bypass Grafts. J Cardiovasc Transl Res 2023; 16:1021-1031. [PMID: 37097589 PMCID: PMC10615989 DOI: 10.1007/s12265-023-10384-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 03/24/2023] [Indexed: 04/26/2023]
Abstract
Vascular smooth muscle cells (VSMCs) are involved in restenosis of bypass grafts and cause artery graft occlusion. This study aimed to explore the role of Slit2 in phenotypic switching of VSMCs and its effect on restenosis of vascular conduits. An animal model of vascular graft restenosis (VGR) was produced in SD rats and assessed by echocardiography. The expression of Slit2 and Hif-1α was measured in vivo and in vitro. After Slit2 overexpression, the migration and proliferation of VSMCs were detected in vitro, and the restenosis rates and phenotype of VSMCs were tested in vivo. The arteries of the VGR model presented significant stenosis, and Slit2 was decreased in VSMCs of the VGR model. In vitro, Slit2 overexpression inhibited the migration and proliferation of VSMCs, but Slit2 knockdown promoted migration and proliferation. Hypoxia induced Hif-1α but reduced Slit2, and Hif-1α negatively regulated Slit2 expression. Moreover, Slit2 overexpression weakened the rate of VGR and maintained the patency of artery bypass grafts, which suppressed the phenotypic switching of VSMCs. Slit2 inhibited the synthetic phenotype transformation to inhibit the migration and proliferation of VSMCs and delayed the VGR via Hif-1α.
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Affiliation(s)
- Sen Li
- Department of Vascular Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Zhiwei Gao
- Department of Vascular Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Haiqing Li
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Chang Xu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Bing Chen
- Department of Vascular Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Qing Zha
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China.
| | - Ke Yang
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Weilin Wang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China.
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China.
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China.
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, Zhejiang, 310009, China.
- Clinical Medicine Innovation Center of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Disease of Zhejiang University, Hangzhou, Zhejiang, 310009, China.
- Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310009, China.
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310009, China.
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Yang H, Zhou S, Lan D, Bin Y, Bao W, Wang M, Huang F, Peng Z. The expression of Slit2 and Robo1 increased during retinoic acid syndrome in acute promyelocytic leukemia and impacted differentiated cell migration. Transl Oncol 2022; 18:101370. [PMID: 35182953 PMCID: PMC8857660 DOI: 10.1016/j.tranon.2022.101370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/25/2022] [Accepted: 02/10/2022] [Indexed: 11/25/2022] Open
Abstract
The upregulation of Robo1 and Slit2 was first found in APL patients. The positive correlation between Robo1/Slit2 and retinoic acid syndrome was first demonstrated. It was demonstrated for the first time that Slit2 induces the migration of differentiated cells. Slit2 did not inhibit il8-induced differentiated cell migration.
Retinoic acid syndrome (RAS) is a serious complication developed during the induction therapy of acute promyelocytic leukemia (APL). Cytokines and differentiated cells migration play important roles in the development of RAS. Slit guidance ligand 2 (Slit2) and roundabout 1 (Robo1) involve in cell migration. Our study aimed to investigate the expression of Slit2 and Robo1 in APL and check whether they affected promyelocytes migration. 62 cases of newly diagnosed APL patients were involved and received all-trans retinoic acid (ATRA) and arsenic trioxide as induction therapy. Bone marrow cells (BMCs) were obtained on days 0 and 28, and promyelocytes and plasma were collected from day 1 to day 21. The expression of Robo1 in promyelocytes, and that of Slit2 and cytokines, including IL-8,IL-1β and others, in serum were monitored. 20 healthy individuals donated their cells as control. Of the 62 APL patients, 16 (25.81%) patients developed RAS. The expression of Robo1, Slit2 and IL-8 increased significantly with the development of RAS. In the 16 patients with RAS, levels of Slit2, Robo1 and IL-8 were higher during the development of RAS than before or after the RAS (P < 0.05). RhSlit2-N and rhIL-8 induced cells migration, and the migration induced by IL-8 was not inhibited by rhSlit2-N. Elevated Slit2 and Robo1 levels might be useful markers for the diagnosis and treatment of RAS. The levels of Slit2, Robo1 and IL-8 showed a positive correlation with the severity of RAS. Slit2 and IL-8 promoted the migration of differentiated cells.
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Affiliation(s)
- Haiyan Yang
- Department of Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Shengsheng Zhou
- Department of Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Dong Lan
- Department of Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Yehong Bin
- Department of Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Wenguang Bao
- Department of Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Man Wang
- Department of Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Fengxiang Huang
- Department of Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Zhigang Peng
- Department of Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China.
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Hernandez-Pacheco N, Gorenjak M, Li J, Repnik K, Vijverberg SJ, Berce V, Jorgensen A, Karimi L, Schieck M, Samedy-Bates LA, Tavendale R, Villar J, Mukhopadhyay S, Pirmohamed M, Verhamme KMC, Kabesch M, Hawcutt DB, Turner S, Palmer CN, Tantisira KG, Burchard EG, Maitland-van der Zee AH, Flores C, Potočnik U, Pino-Yanes M. Identification of ROBO2 as a Potential Locus Associated with Inhaled Corticosteroid Response in Childhood Asthma. J Pers Med 2021; 11:jpm11080733. [PMID: 34442380 PMCID: PMC8399629 DOI: 10.3390/jpm11080733] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 07/26/2021] [Indexed: 12/15/2022] Open
Abstract
Inhaled corticosteroids (ICS) are the most common asthma controller medication. An important contribution of genetic factors in ICS response has been evidenced. Here, we aimed to identify novel genetic markers involved in ICS response in asthma. A genome-wide association study (GWAS) of the change in lung function after 6 weeks of ICS treatment was performed in 166 asthma patients from the SLOVENIA study. Patients with an improvement in lung function ≥8% were considered as ICS responders. Suggestively associated variants (p-value ≤ 5 × 10−6) were evaluated in an independent study (n = 175). Validation of the association with asthma exacerbations despite ICS use was attempted in European (n = 2681) and admixed (n = 1347) populations. Variants previously associated with ICS response were also assessed for replication. As a result, the SNP rs1166980 from the ROBO2 gene was suggestively associated with the change in lung function (OR for G allele: 7.01, 95% CI: 3.29–14.93, p = 4.61 × 10−7), although this was not validated in CAMP. ROBO2 showed gene-level evidence of replication with asthma exacerbations despite ICS use in Europeans (minimum p-value = 1.44 × 10−5), but not in admixed individuals. The association of PDE10A-T with ICS response described by a previous study was validated. This study suggests that ROBO2 could be a potential novel locus for ICS response in Europeans.
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Affiliation(s)
- Natalia Hernandez-Pacheco
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Carretera General del Rosario 145, 38010 Santa Cruz de Tenerife, Spain;
- Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna, Avenida Astrofísico Francisco Sánchez s/n, Faculty of Science, Apartado 456, 38200 San Cristóbal de La Laguna, Spain;
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Avenida de Monforte de Lemos, 5, 28029 Madrid, Spain;
- Correspondence: (N.H.-P.); (U.P.); Tel.: +46-0702983315 (N.H.-P.); +386-22345854 (U.P.)
| | - Mario Gorenjak
- Center for Human Molecular Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska Ulica 8, 2000 Maribor, Slovenia; (M.G.); (K.R.); (V.B.)
| | - Jiang Li
- The Channing Division of Network Medicine, Department of Medicine, Brigham & Women’s Hospital and Harvard Medical School, 75 Francis St, Boston, MA 02115, USA; (J.L.); (K.G.T.)
| | - Katja Repnik
- Center for Human Molecular Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska Ulica 8, 2000 Maribor, Slovenia; (M.G.); (K.R.); (V.B.)
- Laboratory for Biochemistry, Molecular Biology, and Genomics, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, 2000 Maribor, Slovenia
| | - Susanne J. Vijverberg
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands; (S.J.V.); (A.H.M.-v.d.Z.)
- Division of Pharmacoepidemiology and Clinical Pharmacology, Faculty of Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
- Department of Pediatric Respiratory Medicine and Allergy, Emma’s Children Hospital, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Vojko Berce
- Center for Human Molecular Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska Ulica 8, 2000 Maribor, Slovenia; (M.G.); (K.R.); (V.B.)
- Department of Pediatrics, University Medical Centre Maribor, Ljubljanska Ulica 5, 2000 Maribor, Slovenia
| | - Andrea Jorgensen
- Department of Biostatistics, University of Liverpool, Crown Street, Liverpool L69 3BX, UK;
| | - Leila Karimi
- Department of Medical Informatics, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (L.K.); (K.M.C.V.)
| | - Maximilian Schieck
- Department of Pediatric Pneumology and Allergy, University Children’s Hospital Regensburg (KUNO), Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (M.S.); (M.K.)
- Department of Human Genetics, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Lesly-Anne Samedy-Bates
- Department of Medicine, University of California, San Francisco, CA 94143, USA; (L.-A.S.-B.); (E.G.B.)
- Department of Bioengineering and Therapeutic Sciences, University of California, 533 Parnassus Ave, San Francisco, CA 94143, USA
| | - Roger Tavendale
- Population Pharmacogenetics Group, Biomedical Research Institute, Ninewells Hospital, and Medical School, University of Dundee, Dundee DD1 9SY, UK; (R.T.); (S.M.); (C.N.P.)
| | - Jesús Villar
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Avenida de Monforte de Lemos, 5, 28029 Madrid, Spain;
- Multidisciplinary Organ Dysfunction Evaluation Research Network, Research Unit, Hospital Universitario Dr. Negrín, Calle Barranco de la Ballena s/n, 35019 Las Palmas de Gran Canaria, Spain
- Keenan Research Center for Biomedical Science, Li Ka Shing Knowledge Institute, St Michael’s Hospital, 30 Bond St, Toronto, ON M5B 1W8, Canada
| | - Somnath Mukhopadhyay
- Population Pharmacogenetics Group, Biomedical Research Institute, Ninewells Hospital, and Medical School, University of Dundee, Dundee DD1 9SY, UK; (R.T.); (S.M.); (C.N.P.)
- Academic Department of Paediatrics, Brighton and Sussex Medical School, Royal Alexandra Children’s Hospital, 94 N-S Rd, Falmer, Brighton BN2 5BE, UK
| | - Munir Pirmohamed
- Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, 200 London Rd, Liverpool L3 9TA, UK;
| | - Katia M. C. Verhamme
- Department of Medical Informatics, Erasmus University Medical Center, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (L.K.); (K.M.C.V.)
| | - Michael Kabesch
- Department of Pediatric Pneumology and Allergy, University Children’s Hospital Regensburg (KUNO), Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (M.S.); (M.K.)
| | - Daniel B. Hawcutt
- Department of Women’s and Children’s Health, University of Liverpool, Liverpool L69 3BX, UK;
- Alder Hey Children’s Hospital, E Prescot Rd, Liverpool L14 5AB, UK
| | - Steve Turner
- Child Health, University of Aberdeen, King’s College, Aberdeen AB24 3FX, UK;
| | - Colin N. Palmer
- Population Pharmacogenetics Group, Biomedical Research Institute, Ninewells Hospital, and Medical School, University of Dundee, Dundee DD1 9SY, UK; (R.T.); (S.M.); (C.N.P.)
| | - Kelan G. Tantisira
- The Channing Division of Network Medicine, Department of Medicine, Brigham & Women’s Hospital and Harvard Medical School, 75 Francis St, Boston, MA 02115, USA; (J.L.); (K.G.T.)
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, and Harvard Medical School, 75 Francis St, Boston, MA 02115, USA
| | - Esteban G. Burchard
- Department of Medicine, University of California, San Francisco, CA 94143, USA; (L.-A.S.-B.); (E.G.B.)
- Department of Bioengineering and Therapeutic Sciences, University of California, 533 Parnassus Ave, San Francisco, CA 94143, USA
| | - Anke H. Maitland-van der Zee
- Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands; (S.J.V.); (A.H.M.-v.d.Z.)
- Division of Pharmacoepidemiology and Clinical Pharmacology, Faculty of Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
- Department of Pediatric Respiratory Medicine and Allergy, Emma’s Children Hospital, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Carlos Flores
- Research Unit, Hospital Universitario N.S. de Candelaria, Universidad de La Laguna, Carretera General del Rosario 145, 38010 Santa Cruz de Tenerife, Spain;
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Avenida de Monforte de Lemos, 5, 28029 Madrid, Spain;
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Polígono Industrial de Granadilla, 38600 Granadilla, Spain
- Instituto de Tecnologías Biomédicas (ITB), Universidad de La Laguna, Faculty of Health Sciences, Apartado 456, 38200 San Cristóbal de La Laguna, Spain
| | - Uroš Potočnik
- Center for Human Molecular Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska Ulica 8, 2000 Maribor, Slovenia; (M.G.); (K.R.); (V.B.)
- Laboratory for Biochemistry, Molecular Biology, and Genomics, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, 2000 Maribor, Slovenia
- Correspondence: (N.H.-P.); (U.P.); Tel.: +46-0702983315 (N.H.-P.); +386-22345854 (U.P.)
| | - Maria Pino-Yanes
- Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna, Avenida Astrofísico Francisco Sánchez s/n, Faculty of Science, Apartado 456, 38200 San Cristóbal de La Laguna, Spain;
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Avenida de Monforte de Lemos, 5, 28029 Madrid, Spain;
- Instituto de Tecnologías Biomédicas (ITB), Universidad de La Laguna, Faculty of Health Sciences, Apartado 456, 38200 San Cristóbal de La Laguna, Spain
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Regulatory mechanisms of Robo4 and their effects on angiogenesis. Biosci Rep 2019; 39:BSR20190513. [PMID: 31160487 PMCID: PMC6620384 DOI: 10.1042/bsr20190513] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/30/2019] [Accepted: 05/31/2019] [Indexed: 12/13/2022] Open
Abstract
Roundabout4 (Robo4) is a transmembrane receptor that belongs to the Roundabout (Robo) family of axon guidance molecules. Robo4 is an endothelial-specific receptor that participates in endothelial cell migration, proliferation, and angiogenesis and the maintenance of vasculature homeostasis. The purpose of this review is to summarize and analyze three main mechanisms related to the expression and function of Robo4 during developmental and pathological angiogenesis. In this review, static shear stress and the binding of transcription factors such as E26 transformation-specific variant 2 (ETV2) and Slit3 induce Robo4 expression and activate Robo4 during tissue and organ development. Robo4 interacts with Slit2 or UNC5B to maintain vascular integrity, while a disturbed flow and the expression of transcription factors in inflammatory or neoplastic environments alter Robo4 expression levels, although these changes have uncertain functions. Based on the mechanisms described above, we discuss the aberrant expression of Robo4 in angiogenesis-related diseases and propose antiangiogenic therapies targeting the Robo4 signaling pathway for the treatment of ocular neovascularization lesions and tumors. Finally, although many problems related to Robo4 signaling pathways remain to be resolved, Robo4 is a promising and potentially valuable therapeutic target for treating pathological angiogenesis and developmental defects in angiogenesis.
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Jiang S, Du Y, Liu D, He J, Huang Y, Qin K, Zhou X. Inhibitory Effect of Slit2-N on VEGF165-induced proliferation of vascular endothelia via Slit2-N-Robo4-Akt pathway in choroidal neovascularization. Cell Cycle 2019; 18:1241-1253. [PMID: 31081721 DOI: 10.1080/15384101.2019.1617005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Researches have been focusing on the role of Slit2 in angiogenesis, specifically in cell migration and vessel permeability. Nevertheless, the role of Slit2-N, the bioactive fragment of Slit2, in the proliferation of vascular endothelia in choroidal neovascularization and some related mechanisms have not been studied yet. Thus, our study aimed to explore the role of Slit2-N in proliferation of vascular endothelia and the related mechanisms in choroidal neovascularization. Fluorescein isothiocyanate perfusion and HE staining were performed to evaluate volumes of choroidal neovascularization lesions. The effect of Slit2-N on VEGF165-induced cell proliferation and some related mechanisms were detected by CCK8 assay, flow cytometry, siRNA transfection, and western blotting. We found that Slit2-N reduced volumes of laser-induced choroidal neovascularization networks in vivo. Results of the in vitro study showed Slit2-N reduced VEGF165-induced cell proliferation of both human umbilical vascular endothelial cells and human microvascular endothelial cells possibly via activation of AKT rather than that of ERK1/2. Additionally, Robo4, one of the receptors binding to Slit2-N, was involved in the inhibitory effect of Slit2-N. Generally, our findings revealed the inhibitory role of Slit2-N in proliferation of vascular endothelia and some related mechanisms, and presented some potential targets, molecules along Slit2-N-Robo4-AKT axis, to choroidal neovascularization therapy.
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Affiliation(s)
- Shaoqiu Jiang
- a Department of Ophthalmology , the Second Affiliated Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Ophthalmology , Chongqing Eye Institute , Chongqing , China
| | - Yong Du
- a Department of Ophthalmology , the Second Affiliated Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Ophthalmology , Chongqing Eye Institute , Chongqing , China
| | - Danning Liu
- a Department of Ophthalmology , the Second Affiliated Hospital of Chongqing Medical University , Chongqing , China
| | - Junchi He
- c Department of Neurosurgery , the First Affiliated Hospital of Chongqing Medical University , Chongqing , China
| | - Yike Huang
- b Chongqing Key Laboratory of Ophthalmology , Chongqing Eye Institute , Chongqing , China.,d Department of Ophthalmology , the First Affiliated Hospital of Chongqing Medical University , Chongqing , China
| | - Ke Qin
- a Department of Ophthalmology , the Second Affiliated Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Ophthalmology , Chongqing Eye Institute , Chongqing , China
| | - Xiyuan Zhou
- a Department of Ophthalmology , the Second Affiliated Hospital of Chongqing Medical University , Chongqing , China.,b Chongqing Key Laboratory of Ophthalmology , Chongqing Eye Institute , Chongqing , China
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Afewerki T, Ahmed S, Warren D. Emerging regulators of vascular smooth muscle cell migration. J Muscle Res Cell Motil 2019; 40:185-196. [PMID: 31254136 PMCID: PMC6726670 DOI: 10.1007/s10974-019-09531-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 06/21/2019] [Indexed: 12/30/2022]
Abstract
Vascular smooth muscle cells (VSMCs) are the predominant cell type in the blood vessel wall and normally adopt a quiescent, contractile phenotype. VSMC migration is tightly controlled, however, disease associated changes in the soluble and insoluble environment promote VSMC migration. Classically, studies investigating VSMC migration have described the influence of soluble factors. Emerging data has highlighted the importance of insoluble factors, including extracellular matrix stiffness and porosity. In this review, we will recap on the important signalling pathways that regulate VSMC migration and reflect on the potential importance of emerging regulators of VSMC function.
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Affiliation(s)
- TecLino Afewerki
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ UK
| | - Sultan Ahmed
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ UK
| | - Derek Warren
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ UK
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Zhang L, Ma C, Wang X, He S, Li Q, Zhou Y, Liu Y, Zhang M, Yu X, Zhao X, Li F, Zhu DL. Lipopolysaccharide-induced proliferation and glycolysis in airway smooth muscle cells via activation of Drp1. J Cell Physiol 2018; 234:9255-9263. [PMID: 30317624 DOI: 10.1002/jcp.27605] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 09/21/2018] [Indexed: 12/23/2022]
Abstract
Abnormal airway smooth muscle cells (ASMCs) proliferation is an important pathological process in airway remodeling contributes to increased mortality in asthma. Mitochondrial dynamics and metabolism have a central role in the maintenance of the cell function. In this study, lipopolysaccharide (LPS)-induced ASMCs proliferative model was used to investigate the effect of mitochondria on the proliferation of ASMCs and the possible mechanism. We used cell and molecular biology to determine the effect of dynamin-related protein 1 (Drp1) on LPS-mediated ASMCs cell cycle progression and glycolysis. The major findings of the current study are as follows: LPS promoted an increased mitochondrial fission and phosphorylation of Drp1 at Ser616 (p-Drp1 Ser616). LPS-induced ASMCs proliferation and cell cycle progression, which was significantly inhibited application of Drp1 RNA interfering. Glycolysis inhibitor 2-deoxyglucose (2-DG) depressed ASMCs proliferative process induced by LPS stimulation. LPS caused mitochondrial metabolism disorders and aerobic glycolysis in a dependent on Drp1 activation. These results indicated that Drp1 may function as a key factor in asthma airway remodeling by mediating ASMC proliferation and cell cycle acceleration through an effect on mitochondrial metabolic disturbance.
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Affiliation(s)
- Lixin Zhang
- Department of Biopharmaceutical Sciences, Central Laboratory of Harbin Medical University (Daqing), Daqing, China.,Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Cui Ma
- Department of Biopharmaceutical Sciences, Central Laboratory of Harbin Medical University (Daqing), Daqing, China.,Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Xiaoying Wang
- Department of Pharmaceutical Analysis, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Siyu He
- Department of Biopharmaceutical Sciences, Central Laboratory of Harbin Medical University (Daqing), Daqing, China.,Department of Pharmaceutical Analysis, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Qian Li
- Department of Pharmaceutical Analysis, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yutian Zhou
- College of Pharmacy, Harbin of Commerce, Harbin, China
| | - Ying Liu
- Department of Biopharmaceutical Sciences, Central Laboratory of Harbin Medical University (Daqing), Daqing, China.,Department of Pharmaceutical Analysis, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Min Zhang
- Department of Biopharmaceutical Sciences, Central Laboratory of Harbin Medical University (Daqing), Daqing, China.,Department of Pharmaceutical Analysis, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xiufeng Yu
- Department of Biopharmaceutical Sciences, Central Laboratory of Harbin Medical University (Daqing), Daqing, China.,Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Xijuan Zhao
- Department of Biopharmaceutical Sciences, Central Laboratory of Harbin Medical University (Daqing), Daqing, China.,Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Fei Li
- College of Basic Medicine, Harbin Medical University (Daqing), Daqing, China
| | - Da-Ling Zhu
- Department of Biopharmaceutical Sciences, Central Laboratory of Harbin Medical University (Daqing), Daqing, China.,Department of Pharmaceutical Analysis, College of Pharmacy, Harbin Medical University, Harbin, China.,Department of Biopharmaceutical Sciences, State Province Key Laboratories of Biomedicine-Pharmaceutics of China, Daqing, China.,Department of Biopharmaceutical Sciences, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, Harbin Medical University, Harbin, China
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9
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Slit2-Robo2 signaling modulates the fibrogenic activity and migration of hepatic stellate cells. Life Sci 2018; 203:39-47. [PMID: 29660433 DOI: 10.1016/j.lfs.2018.04.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/28/2018] [Accepted: 04/12/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND & AIM Slit/Robo signaling was originally identified as a repulsive guidance cue in regulating axon branching and neuronal migration. Hepatic stellate cells (HSCs) are the key fibrogenic cells in the liver, which are migratory when activated, and express neural crest markers. The aim of the present study was to investigate the functional significance of Slit/Robo signaling in liver fibrogenesis and in HSCs. KEY FINDINGS By transcriptomic analysis it was found that axon guidance signaling pathways were significantly upregulated in both diethylnitrosamine (DEN) and thioacetamide (TAA)-induced experimental liver fibrosis. The up-regulation of the ligand Slit2 and membrane receptor Robo2 genes within this pathway was further validated in TAA-induced fibrotic livers. By immunofluorescence staining, Robo2 was localized in fibrotic septa of fibrotic liver and on the surface of HSCs. By Western blot analysis, recombinant Slit2 (rSlit2) was found to promote fibrogenic protein expression in JS1 cells, an immortalized mouse HSC line, while activating PI3K/Akt signaling pathway. This effect was abrogated by LY294002, a PI3K/Akt pathway inhibitor. In addition, rSlit2 stimulation markedly inhibited JS1 cells migration in transwell migration assays, which was abrogated by small interfering RNA (siRNA) knockdown of Robo2 in the cells. SIGNIFICANCE The present study provides evidence that Slit2/Robo2 signaling mediates the pathogenesis of hepatic fibrogenesis and regulates HSCs biology, thus providing potential markers for HSCs, and therapeutic and diagnostic target toward liver fibrosis.
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10
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Wu MF, Liao CY, Wang LY, Chang JT. The role of Slit-Robo signaling in the regulation of tissue barriers. Tissue Barriers 2017; 5:e1331155. [PMID: 28598714 PMCID: PMC5501134 DOI: 10.1080/21688370.2017.1331155] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 05/11/2017] [Accepted: 05/11/2017] [Indexed: 01/12/2023] Open
Abstract
The role of Slit/Robo signaling has extended from initial axon repulsion in the developing nervous system to organ morphogenesis, cancer development and angiogenesis. Slit/Robo signaling regulates similar pathways within these processes. Slit/Robo ensures the homeostasis of the dynamic interaction between cell-cell and cell-matrix interactions. The dysregulation of Slit/Robo signaling damages the tissue barrier, resulting in developmental abnormalities or disease. Here, we summarize how Slit/Robo controls kidney morphogenesis and describe the dual roles of Slit/Robo signaling in the regulation of tumorigenesis and angiogenesis.
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Affiliation(s)
- Ming-Fang Wu
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan, R.O.C.
- Divisions of Medical Oncology and Pulmonary Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan, R.O.C.
| | - Chen-Yi Liao
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan, R.O.C.
| | - Ling-Yi Wang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan, R.O.C.
| | - Jinghua Tsai Chang
- Divisions of Medical Oncology and Pulmonary Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan, R.O.C.
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan, R.O.C.
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11
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Liu L, Pan Y, Song Y, Su X, Ke R, Yang L, Gao L, Li M. Activation of AMPK α2 inhibits airway smooth muscle cells proliferation. Eur J Pharmacol 2016; 791:235-243. [PMID: 27600020 DOI: 10.1016/j.ejphar.2016.09.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 09/02/2016] [Accepted: 09/02/2016] [Indexed: 12/31/2022]
Abstract
The aims of the present study were to examine the effect of adenosine monophosphate-activated protein kinase (AMPK) activation on airway smooth muscle cells (ASMCs) proliferation and to address its potential mechanisms. Platelet derived growth factor (PDGF) activated phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) signaling pathway, and this in turn up-regulated S-phase kinase-associated protein 2 (Skp2) and consequently reduced cyclin dependent kinase inhibitor 1B (p27) leading to ASMCs proliferation. Pre-incubation of cells with metformin, an AMPK activator, blocked PDGF-induced activation of mTOR and its downstream targets changes of Skp2 and p27 without changing Akt phosphorylation and inhibited ASMCs proliferation. Transfection of ASMCs with AMPK α2-specific small interfering RNA (siRNA) reversed the effect of metformin on mTOR phosphorylation, Skp2 and p27 protein expression and cell proliferation. Our study suggests that activation of AMPK, particularly AMPK α2, negatively regulates mTOR activity to suppress ASMCs proliferation and therefore has a potential value in the prevention and treatment of asthma by negatively modulating airway remodeling.
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Affiliation(s)
- Lu Liu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Yilin Pan
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Yang Song
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Xiaofan Su
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Rui Ke
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Lan Yang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Li Gao
- Division of Allergy and Clinical Immunology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA.
| | - Manxiang Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
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12
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Su X, Ren Y, Yu N, Kong L, Kang J. Thymoquinone inhibits inflammation, neoangiogenesis and vascular remodeling in asthma mice. Int Immunopharmacol 2016; 38:70-80. [PMID: 27240137 DOI: 10.1016/j.intimp.2016.05.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 05/19/2016] [Accepted: 05/19/2016] [Indexed: 01/01/2023]
Abstract
Asthma is a chronic obstructive disease which is characterized by recurring airway inflammation, reversible airway obstruction, airway hyper responsiveness and vascular remodeling. Thymoquinone (TQ), an active ingredient isolated from Nigella sativa, was reported to exhibit anti-inflammation and anti-proliferation of in various cancer cells as well as epithelial cells. The aim of this study was to evaluate the effect of TQ on the inflammation, neoangiogenesis and vascular remodeling induced by Ovalbumin (OVA) in asthma mice in vivo and the anti-angiogenesis effects of TQ in VEGF-induced human umbilical vein endothelial cells (HUVECs) in vitro. Our results revealed that TQ inhibited the production of inflammatory factors interleukin-4/-5 (IL-4/-5) by enzyme-linked immunesorbent assay (ELISA). Immunohistochemistry analysis showed that the increase of platelet endothelial cell adhesion molecule-1, which is also known as CD31 and α-smooth muscle actinalpha (α-SMA) expression in asthma mice challenged by OVA was suppressed by TQ. Moreover, TQ suppressed the activation of VEGFR2-PI3K-Akt pathway and up-regulated the expression of Slit glycoprotein-2 (Slit-2) both in vivo and in vitro with the inhibition of tube information in HUVEC cells. Meanwhile immunofluorescence analysis showed that Slit-2 and Roundabout-4 (Robo-4) were co-expressing after TQ treatment in OVA-challenged asthma mice. Our study demonstrates that TQ attenuated the inflammatory reaction by antagonizing IL-4/-5 while the anti-neoangiogenesis effect of TQ is mediated by inhibition of vascular endothelial growth factor (VEGF) expression through VEGFR2/PI3K/Akt signaling pathway, which supports a potential role for TQ in ameliorating asthma.
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Affiliation(s)
- Xinming Su
- Department of Respiratory Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China.
| | - Yuan Ren
- Department of Respiratory Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Na Yu
- Department of Respiratory Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Lingfei Kong
- Department of Respiratory Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Jian Kang
- Department of Respiratory Medicine, Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
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13
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Burke-Gaffney A, Svermova T, Mumby S, Finney SJ, Evans TW. Raised plasma Robo4 and cardiac surgery-associated acute kidney injury. PLoS One 2014; 9:e111459. [PMID: 25360813 PMCID: PMC4216014 DOI: 10.1371/journal.pone.0111459] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 09/30/2014] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE Endothelial dysfunction associated with systemic inflammation can contribute to organ injury/failure following cardiac surgery requiring cardiopulmonary bypass (CPB). Roundabout protein 4 (Robo4), an endothelial-expressed transmembrane receptor and regulator of cell activation, is an important inhibitor of endothelial hyper-permeability. We investigated the hypothesis that plasma levels of Robo4 are indicative of organ injury, in particular acute kidney injury (AKI), after cardiac surgery. METHODS Patients (n = 32) undergoing elective cardiac surgery with CPB were enrolled, prospectively. Plasma Robo4 concentrations were measured pre-, 2 and 24 h post-operatively, using a commercially available ELISA. Plasma and endothelial markers of inflammation [interleukin (IL) -6, -8, -10: von Willibrand factor (vWF) and angiopoeitin-2 (Ang-2)] and the AKI marker, neutrophil gelatinase-associated lipocalin (NGAL), were also measured by ELISA. RESULTS Plasma Robo4 increased significantly (p<0.001) from pre-operative levels of 2515 ± 904 pg/ml to 4473 ± 1915 pg/ml, 2 h after surgery; and returned to basal levels (2682 ± 979 pg/ml) by 24 h. Plasma cytokines, vWF and NGAL also increased 2 h post-operatively and remained elevated at 24 h. Ang-2 increased 24 h post-operatively, only. There was a positive, significant correlation (r = 0.385, p = 0.0298) between Robo-4 and IL-10, but not other cytokines, 2 h post-operatively. Whilst raised Robo4 did not correlate with indices of lung dysfunction or other biomarkers of endothelial activation; there was a positive, significant correlation between raised (2 h) plasma NGAL and Robo4 (r = 0.4322, p = 0.0135). When patients were classed as AKI or non-AKI either using NGAL cut-off of 150 ng/ml, or the AKI Network (AKIN) clinical classification; plasma Robo4 was significantly higher (p = 0.0073 and 0.003, respectively) in AKI vs. non-AKI patients (NGAL cut-off: 5350 ± 2191 ng/ml, n = 16 vs. 3595 ± 1068 pg/ml, n = 16; AKIN: 6546 pg/ml, IQR 5025-8079, n = 6; vs. 3727 pg/ml, IQR 1962-3727, n = 26) subjects. CONCLUSION Plasma Robo4 levels are increased, transiently, following cardiac surgery requiring CPB; and higher levels in patients with AKI suggest a link between endothelial dysregulation and onset of AKI.
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Affiliation(s)
- Anne Burke-Gaffney
- Vascular Biology, Cardiovascular Sciences, National Heart and Lung Institute Division, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Tatiana Svermova
- Vascular Biology, Cardiovascular Sciences, National Heart and Lung Institute Division, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Sharon Mumby
- Vascular Biology, Cardiovascular Sciences, National Heart and Lung Institute Division, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Simon J. Finney
- National Institute for Health Research Respiratory Biomedical Research Unit, Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom
| | - Timothy W. Evans
- National Institute for Health Research Respiratory Biomedical Research Unit, Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom
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14
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Al-Alwan LA, Chang Y, Rousseau S, Martin JG, Eidelman DH, Hamid Q. CXCL1 inhibits airway smooth muscle cell migration through the decoy receptor Duffy antigen receptor for chemokines. THE JOURNAL OF IMMUNOLOGY 2014; 193:1416-26. [PMID: 24981451 DOI: 10.4049/jimmunol.1302860] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Airway smooth muscle cell (ASMC) migration is an important mechanism postulated to play a role in airway remodeling in asthma. CXCL1 chemokine has been linked to tissue growth and metastasis. In this study, we present a detailed examination of the inhibitory effect of CXCL1 on human primary ASMC migration and the role of the decoy receptor, Duffy AgR for chemokines (DARC), in this inhibition. Western blots and pathway inhibitors showed that this phenomenon was mediated by activation of the ERK-1/2 MAPK pathway, but not p38 MAPK or PI3K, suggesting a biased selection in the signaling mechanism. Despite being known as a nonsignaling receptor, small interference RNA knockdown of DARC showed that ERK-1/2 MAPK activation was significantly dependent on DARC functionality, which, in turn, was dependent on the presence of heat shock protein 90 subunit α. Interestingly, DARC- or heat shock protein 90 subunit α-deficient ASMCs responded to CXCL1 stimulation by enhancing p38 MAPK activation and ASMC migration through the CXCR2 receptor. In conclusion, we demonstrated DARC's ability to facilitate CXCL1 inhibition of ASMC migration through modulation of the ERK-1/2 MAPK-signaling pathway.
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Affiliation(s)
- Laila A Al-Alwan
- Meakins-Christie Laboratories, Respiratory Division, Department of Medicine, McGill University, Montreal, Quebec H2X 2P2, Canada
| | - Ying Chang
- Meakins-Christie Laboratories, Respiratory Division, Department of Medicine, McGill University, Montreal, Quebec H2X 2P2, Canada
| | - Simon Rousseau
- Meakins-Christie Laboratories, Respiratory Division, Department of Medicine, McGill University, Montreal, Quebec H2X 2P2, Canada
| | - James G Martin
- Meakins-Christie Laboratories, Respiratory Division, Department of Medicine, McGill University, Montreal, Quebec H2X 2P2, Canada
| | - David H Eidelman
- Meakins-Christie Laboratories, Respiratory Division, Department of Medicine, McGill University, Montreal, Quebec H2X 2P2, Canada
| | - Qutayba Hamid
- Meakins-Christie Laboratories, Respiratory Division, Department of Medicine, McGill University, Montreal, Quebec H2X 2P2, Canada
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15
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Yu J, Zhang X, Kuzontkoski PM, Jiang S, Zhu W, Li DY, Groopman JE. Slit2N and Robo4 regulate lymphangiogenesis through the VEGF-C/VEGFR-3 pathway. Cell Commun Signal 2014; 12:25. [PMID: 24708522 PMCID: PMC4122147 DOI: 10.1186/1478-811x-12-25] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 02/21/2014] [Indexed: 12/28/2022] Open
Abstract
Background Signaling through vascular endothelial growth factor C (VEGF–C) and
VEGF receptor 3 (VEGFR-3) plays a central role in lymphangiogenesis and the
metastasis of several cancers via the lymphatics. Recently, the Slit2/Robo4
pathway has been recognized as a modulator of vascular permeability and
integrity. Signaling via the Robo receptor inhibits VEGF-mediated effects;
however, its effects on lymphatic endothelial cell function have not been
well characterized. Results We found that pretreatment with Slit2N, an active fragment of Slit2,
inhibited VEGF-C-mediated lung-derived lymphatic endothelial cell (L-LEC)
proliferation, migration, and in vitro tube formation. Slit2N
induced the internalization of VEGFR-3, which blocked its activation, and
inhibited the activation of the PI3K/Akt pathway by VEGF-C in L-LECs.
Moreover, we found that inhibition of VEGF-C-induced effects by Slit2N was
Robo4-dependent. Conclusion These results indicate that Slit2N/Robo4 modulates several key cellular
functions, which contribute to lymphangiogenesis, and identify this
ligand-receptor pair as a potential therapeutic target to inhibit lymphatic
metastasis of VEGF-C-overexpressing cancers and manage lymphatic
dysfunctions characterized by VEGF-C/VEGFR-3 activation.
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Affiliation(s)
| | | | | | | | | | | | - Jerome E Groopman
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Ave, Boston, MA 02115, USA.
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16
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Zhao H, Anand AR, Ganju RK. Slit2-Robo4 pathway modulates lipopolysaccharide-induced endothelial inflammation and its expression is dysregulated during endotoxemia. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2014; 192:385-93. [PMID: 24272999 PMCID: PMC3908786 DOI: 10.4049/jimmunol.1302021] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The secretory protein Slit2 and its receptors Robo1 and Robo4 are considered to regulate mobility and permeability of endothelial cells and other cell types. However, the roles of Slit2 and its two receptors in endothelial inflammatory responses remain to be clarified. In this study, we show that, in primary HUVECs, Slit2 represses LPS-induced secretion of certain inflammatory cytokines/chemokines, cell adhesion molecule ICAM-1 upregulation, and monocyte adhesion. Slit2's anti-inflammatory effect is mediated by its dominant endothelial-specific receptor Robo4. However, the minor receptor Robo1 has proinflammatory properties and is downregulated by Slit2 via targeting of miR-218. Elucidation of molecular mechanism reveals that Slit2 represses inflammatory responses by inhibiting the Pyk2-NF-κB pathway downstream of LPS-TLR4. Further studies reveal that LPS enhances endothelial inflammation by downregulating the anti-inflammatory Slit2 and Robo4 in HUVECs in vitro, as well as in arterial endothelial cells and liver in vivo during endotoxemia. These results suggest that Slit2-Robo4 signaling is important in regulating LPS-induced endothelial inflammation, and LPS, in turn, enhances inflammation by interfering with the expression of the anti-inflammatory Slit2-Robo4 during the disease state. This implies that Slit2-Robo4 is a key regulator of endothelial inflammation, and its dysregulation during endotoxemia is a novel mechanism for LPS-induced vascular pathogenesis.
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Affiliation(s)
- Helong Zhao
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210
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17
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Mikhaylova L, Zhang Y, Kobzik L, Fedulov AV. Link between epigenomic alterations and genome-wide aberrant transcriptional response to allergen in dendritic cells conveying maternal asthma risk. PLoS One 2013; 8:e70387. [PMID: 23950928 PMCID: PMC3741290 DOI: 10.1371/journal.pone.0070387] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 06/19/2013] [Indexed: 12/23/2022] Open
Abstract
We investigated the link between epigenome-wide methylation aberrations at birth and genomic transcriptional changes upon allergen sensitization that occur in the neonatal dendritic cells (DC) due to maternal asthma. We previously demonstrated that neonates of asthmatic mothers are born with a functional skew in splenic DCs that can be seen even in allergen-naïve pups and can convey allergy responses to normal recipients. However, minimal-to-no transcriptional or phenotypic changes were found to explain this alteration. Here we provide in-depth analysis of genome-wide DNA methylation profiles and RNA transcriptional (microarray) profiles before and after allergen sensitization. We identified differentially methylated and differentially expressed loci and performed manually-curated matching of methylation status of the key regulatory sequences (promoters and CpG islands) to expression of their respective transcripts before and after sensitization. We found that while allergen-naive DCs from asthma-at-risk neonates have minimal transcriptional change compared to controls, the methylation changes are extensive. The substantial transcriptional change only becomes evident upon allergen sensitization, when it occurs in multiple genes with the pre-existing epigenetic alterations. We demonstrate that maternal asthma leads to both hyper- and hypomethylation in neonatal DCs, and that both types of events at various loci significantly overlap with transcriptional responses to allergen. Pathway analysis indicates that approximately 1/2 of differentially expressed and differentially methylated genes directly interact in known networks involved in allergy and asthma processes. We conclude that congenital epigenetic changes in DCs are strongly linked to altered transcriptional responses to allergen and to early-life asthma origin. The findings are consistent with the emerging paradigm that asthma is a disease with underlying epigenetic changes.
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Affiliation(s)
- Lyudmila Mikhaylova
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Yiming Zhang
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Lester Kobzik
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Alexey V. Fedulov
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, United States of America
- * E-mail:
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18
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Evsyukova I, Plestant C, Anton ES. Integrative mechanisms of oriented neuronal migration in the developing brain. Annu Rev Cell Dev Biol 2013; 29:299-353. [PMID: 23937349 DOI: 10.1146/annurev-cellbio-101512-122400] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The emergence of functional neuronal connectivity in the developing cerebral cortex depends on neuronal migration. This process enables appropriate positioning of neurons and the emergence of neuronal identity so that the correct patterns of functional synaptic connectivity between the right types and numbers of neurons can emerge. Delineating the complexities of neuronal migration is critical to our understanding of normal cerebral cortical formation and neurodevelopmental disorders resulting from neuronal migration defects. For the most part, the integrated cell biological basis of the complex behavior of oriented neuronal migration within the developing mammalian cerebral cortex remains an enigma. This review aims to analyze the integrative mechanisms that enable neurons to sense environmental guidance cues and translate them into oriented patterns of migration toward defined areas of the cerebral cortex. We discuss how signals emanating from different domains of neurons get integrated to control distinct aspects of migratory behavior and how different types of cortical neurons coordinate their migratory activities within the developing cerebral cortex to produce functionally critical laminar organization.
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Affiliation(s)
- Irina Evsyukova
- Neuroscience Center and the Department of Cell Biology and Physiology, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599;
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19
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Ning Y, Huang H, Dong Y, Sun Q, Zhang W, Xu W, Li Q. 5-Aza-2'-deoxycytidine inhibited PDGF-induced rat airway smooth muscle cell phenotypic switching. Arch Toxicol 2013; 87:871-81. [PMID: 23423710 DOI: 10.1007/s00204-012-1008-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 12/20/2012] [Indexed: 11/30/2022]
Abstract
Airway smooth muscle (ASM) cell phenotypic switching played an important role in airway remodeling in asthma. In vitro platelet-derived growth factor (PDGF) induced ASM cell phenotypic switching from a mature to pro-remodeling phenotype, but the mechanism remained incompletely understood. This study was to explore the effect of DNA methyltransferase inhibitor 5-Aza-2'-deoxycytidine (Aza-CdR) on PDGF-induced rat ASM cell phenotypic switching and biological behaviors. Rat airway smooth muscle (RASM) cells were obtained by primary explant techniques. Western blot, 3-dimensional gel contraction, transwell and wound healing assay, and MTT were applied to detect cell phenotypic switching, contractility, migration and proliferation, respectively. Cytoskeleton rearrangement was observed by immunofluorescence. Results showed Aza-CdR inhibited PDGF-induced down-regulation of contractile markers in RASM cells and increased cell contractility. Aza-CdR inhibited PDGF-induced RASM cell migration by abrogating cell morphology change and cytoskeletal reorganization and attenuated the effect of PDGF on proliferating cell nuclear antigen expression and cell cycle progression, ultimately cell proliferation. PDGF-induced DNA methyltransferase 1 (DNMT1) expression was mediated by activation of PI3K/Akt and ERK signaling in RASM cells. Selective depletion of DNMT1 protein by Aza-CdR inhibited PDGF-induced RASM cell phenotypic switching, revealing DNMT1-mediated DNA methylation was implicated in asthmatic ASM remodeling. We proposed for the first time that DNMT1 played a key role in PDGF-induced RASM cell phenotypic switching and Aza-CdR is promising in intervening ASM remodeling in asthma. Although study of abnormal DNA methylation in PDGF-stimulated ASM cells is in its infancy, this work contributes to providing new insights into the mechanism of ASM remodeling and may be helpful for developing effective treatments for airway remodeling in asthma.
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Affiliation(s)
- Yunye Ning
- Department of Respiratory Medicine, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Yangpu District, Shanghai, 200433, People's Republic of China
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20
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Prasad A, Kuzontkoski PM, Shrivastava A, Zhu W, Li DY, Groopman JE. Slit2N/Robo1 inhibit HIV-gp120-induced migration and podosome formation in immature dendritic cells by sequestering LSP1 and WASp. PLoS One 2012; 7:e48854. [PMID: 23119100 PMCID: PMC3485365 DOI: 10.1371/journal.pone.0048854] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Accepted: 10/01/2012] [Indexed: 11/26/2022] Open
Abstract
Cell-mediated transmission and dissemination of sexually-acquired human immunodeficiency virus 1 (HIV-1) in the host involves the migration of immature dendritic cells (iDCs). iDCs migrate in response to the HIV-1 envelope protein, gp120, and inhibiting such migration may limit the mucosal transmission of HIV-1. In this study, we elucidated the mechanism of HIV-1-gp120-induced transendothelial migration of iDCs. We found that gp120 enhanced the binding of Wiskott-Aldrich Syndrome protein (WASp) and the Actin-Related Protein 2/3 (Arp2/3) complex with β-actin, an interaction essential for the proper formation of podosomes, specialized adhesion structures required for the migration of iDCs through different tissues. We further identified Leukocyte-Specific Protein 1 (LSP1) as a novel component of the WASp-Arp2/3-β-actin complex. Pretreating iDCs with an active fragment of the secretory glycoprotein Slit2 (Slit2N) inhibited HIV-1-gp120-mediated migration and podosome formation, by inducing the cognate receptor Roundabout 1 (Robo1) to bind to and sequester WASp and LSP1 from β-actin. Slit2N treatment also inhibited Src signaling and the activation of several downstream molecules, including Rac1, Pyk2, paxillin, and CDC42, a major regulator of podosome formation. Taken together, our results support a novel mechanism by which Slit2/Robo1 may inhibit the HIV-1-gp120-induced migration of iDCs, thereby restricting dissemination of HIV-1 from mucosal surfaces in the host.
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Affiliation(s)
- Anil Prasad
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Paula M. Kuzontkoski
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Ashutosh Shrivastava
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Weiquan Zhu
- Department of Medicine and Molecular Medicine Program, University of Utah, Salt Lake City, Utah, United States of America
| | - Dean Y. Li
- Department of Medicine and Molecular Medicine Program, University of Utah, Salt Lake City, Utah, United States of America
| | - Jerome E. Groopman
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
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21
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Guijarro-Muñoz I, Cuesta AM, Alvarez-Cienfuegos A, Geng JG, Alvarez-Vallina L, Sanz L. The axonal repellent Slit2 inhibits pericyte migration: potential implications in angiogenesis. Exp Cell Res 2012; 318:371-8. [PMID: 22198087 DOI: 10.1016/j.yexcr.2011.12.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 12/02/2011] [Accepted: 12/07/2011] [Indexed: 12/29/2022]
Abstract
The Slit family of secreted proteins acts through the Roundabout (Robo) receptors to repel axonal migration during central nervous system development. Emerging evidence shows that Slit/Robo interactions also play a role in angiogenesis. The effect of Robo signaling on endothelial cells has been shown to be context-dependent. However, the role of Slit/Robo in pericytes has been largely unexplored. The aim of this study was to determine the effect of Slit2 on primary human pericytes and to address the underlying mechanisms, including the receptors potentially implicated. We demonstrate that both Robo1 and Robo4 are expressed by human pericytes. In the presence of their ligand Slit2, spontaneous and PDGF-induced migration of pericytes was impaired. This antimigratory activity of Slit-2 correlated with the inhibition of actin-based protrusive structures. Interestingly, human pericyte interaction with immobilized Slit2 was inhibited in the presence of anti-Robo1 and anti-Robo4 blocking antibodies, suggesting the implication of both receptors. These results add new insights into the role of Slit proteins during the angiogenic process that relies on the directional migration not only of endothelial cells but also of pericytes.
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Affiliation(s)
- I Guijarro-Muñoz
- Molecular Immunology Unit, Hospital Universitario Puerta de Hierro, 28222 Majadahonda, Madrid, Spain
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22
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Abstract
The Slit family of secreted proteins and their transmembrane receptor, Robo, were originally identified in the nervous system where they function as axon guidance cues and branching factors during development. Since their discovery, a great number of additional roles have been attributed to Slit/Robo signaling, including regulating the critical processes of cell proliferation and cell motility in a variety of cell and tissue types. These processes are often deregulated during cancer progression, allowing tumor cells to bypass safeguarding mechanisms in the cell and the environment in order to grow and escape to new tissues. In the past decade, it has been shown that the expression of Slit and Robo is altered in a wide variety of cancer types, identifying them as potential therapeutic targets. Further, studies have demonstrated dual roles for Slits and Robos in cancer, acting as both oncogenes and tumor suppressors. This bifunctionality is also observed in their roles as axon guidance cues in the developing nervous system, where they both attract and repel neuronal migration. The fact that this signaling axis can have opposite functions depending on the cellular circumstance make its actions challenging to define. Here, we summarize our current understanding of the dual roles that Slit/Robo signaling play in development, epithelial tumor progression, and tumor angiogenesis.
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Affiliation(s)
- Mimmi S. Ballard
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz CA 95064
| | - Lindsay Hinck
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz CA 95064
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23
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Current World Literature. Curr Opin Nephrol Hypertens 2012; 21:106-18. [DOI: 10.1097/mnh.0b013e32834ee42b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Farooqi AA, Waseem S, Riaz AM, Dilawar BA, Mukhtar S, Minhaj S, Waseem MS, Daniel S, Malik BA, Nawaz A, Bhatti S. PDGF: the nuts and bolts of signalling toolbox. Tumour Biol 2011; 32:1057-70. [PMID: 21769672 DOI: 10.1007/s13277-011-0212-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2011] [Accepted: 07/07/2011] [Indexed: 12/16/2022] Open
Abstract
PDGF is a growth factor and is extensively involved in multi-dimensional cellular dynamics. It switches on a plethora of molecules other than its classical pathway. It is engaged in various transitions of development; however, if the unleashed potentials lead astray, it brings forth tumourigenesis. Conventionally, it has been assumed that the components of this signalling pathway show fidelity and act with a high degree of autonomy. However, as illustrated by the PDGF signal transduction, reinterpretation of recent data suggests that machinery is often shared between multiple pathways, and other components crosstalk to each other through multiple mechanisms. It is important to note that metastatic cascade is an intricate process that we have only begun to understand in recent years. Many of the early steps of this PDGF cascade are not readily targetable in the clinic. In this review, we will unravel the paradoxes with reference to mitrons and cellular plasticity and discuss how disruption of signalling cascade triggers cellular proliferation phase transition and metastasis. We will also focus on the therapeutic interventions to counteract resultant molecular disorders.
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Affiliation(s)
- Ammad Ahmad Farooqi
- Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore, 1 km defence road, Lahore, Pakistan.
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