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Yadunandanan Nair N, Samuel V, Ramesh L, Marib A, David DT, Sundararaman A. Actin cytoskeleton in angiogenesis. Biol Open 2022; 11:bio058899. [PMID: 36444960 PMCID: PMC9729668 DOI: 10.1242/bio.058899] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024] Open
Abstract
Actin, one of the most abundant intracellular proteins in mammalian cells, is a critical regulator of cell shape and polarity, migration, cell division, and transcriptional response. Angiogenesis, or the formation of new blood vessels in the body is a well-coordinated multi-step process. Endothelial cells lining the blood vessels acquire several new properties such as front-rear polarity, invasiveness, rapid proliferation and motility during angiogenesis. This is achieved by changes in the regulation of the actin cytoskeleton. Actin remodelling underlies the switch between the quiescent and angiogenic state of the endothelium. Actin forms endothelium-specific structures that support uniquely endothelial functions. Actin regulators at endothelial cell-cell junctions maintain the integrity of the blood-tissue barrier while permitting trans-endothelial leukocyte migration. This review focuses on endothelial actin structures and less-recognised actin-mediated endothelial functions. Readers are referred to other recent reviews for the well-recognised roles of actin in endothelial motility, barrier functions and leukocyte transmigration. Actin generates forces that are transmitted to the extracellular matrix resulting in vascular matrix remodelling. In this review, we attempt to synthesize our current understanding of the roles of actin in vascular morphogenesis. We speculate on the vascular bed specific differences in endothelial actin regulation and its role in the vast heterogeneity in endothelial morphology and function across the various tissues of our body.
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Affiliation(s)
- Nidhi Yadunandanan Nair
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Victor Samuel
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Lariza Ramesh
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Areeba Marib
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Deena T. David
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Ananthalakshmy Sundararaman
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
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Sun W, Zhang L, Fang Z, Han L, Wang Q, Leng Y, Li M, Xue Y, Wu Y, Li Z, Wang H, Chen L. Shuxuetong injection and its peptides enhance angiogenesis after hindlimb ischemia by activating the MYPT1/LIMK1/Cofilin pathway. JOURNAL OF ETHNOPHARMACOLOGY 2022; 292:115166. [PMID: 35248678 DOI: 10.1016/j.jep.2022.115166] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/22/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Shuxuetong (SXT) injection is formulated by leech and earthworm, has been widely used in the treatment of thrombotic cardiovascular and cerebrovascular diseases with remarkable clinical efficacy. AIM OF THE STUDY The purpose of this study is to investigate the protective mechanism of SXT injection on the mice model of hindlimb ischemia, and to evaluate the angiogenic effects of SXT injection and its main active substances. MATERIALS AND METHODS Hindlimb ischemia was induced by left femoral artery ligation. After operation, the mice were injected with saline, 10 mg/kg/d cilostazol, 37.5 mg/kg/d SXT injection, 75 mg/kg/d SXT injection and 150 mg/kg/d SXT injection via tail vein for 4 weeks. Ischemia severity was assessed using laser Doppler perfusion imaging system. Tissue recovery and capillary density were evaluated by histological and immunofluorescent staining. Vascular endothelial growth factor-A (VEGF-A) and platelet-derived growth factor (PDGF-BB) expression were measured by reverse transcription polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA) analyses. Human umbilical vein endothelial cells (HUVECs) proliferation was measured using a BrdU kit and the viability of HUVECs was performed by MTT assay. Migration of HUVECs was performed by the wound healing method and a modified transwell assay. Capillary tube formation by HUVECs was examined by using Matrigel assay. Western blotting was used to detect the expressions of p-Cofilin, p-MYPT1, and p-LIMK1. RESULTS SXT injection treatment significantly restored the blood flow and reduced tissue injury in mouse gastrocnemius muscle. SXT injection treatment increased capillary density and promoted angiogenesis in hindlimb ischemia. Moreover, SXT injection enhanced the expression of VEGF-A and PDGF-BB at both mRNA and protein levels in ischemic tissue of mice. SXT injection and its main active peptides dramatically increased the migration and capillary tube formation of HUVECs. SXT injection and its peptides enhanced protein expressions of the phosphorylation of MYPT1, Cofilin, and LIMK1. DSYVGDEAQSKR, YNELRVAPEEHP, and IQFLPEGSPVTM may act as the active components of SXT injection. CONCLUSION SXT injection promoted angiogenesis and improved function recovery in hindlimb ischemia mice by regulation of VEGF-A/PDGF-BB. Moreover, SXT injection and its active peptides induced cell migration and tube formation in HUVECs through activating the MYPT1/LIMK1/Cofilin pathway. This study provided experimental basis for SXT injection in the treatment of ischemic diseases and revealed the effective substance of SXT injection in regulating angiogenesis, providing better evidence for the clinical application of SXT injection.
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Affiliation(s)
- Wei Sun
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China; School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Lusha Zhang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China; School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Zhirui Fang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China
| | - Lifeng Han
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China
| | - Qianyi Wang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China
| | - Yuze Leng
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China; School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Mengyao Li
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China; School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yuejin Xue
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China; School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Yongsheng Wu
- Mudanjiang YouBo Pharmaceutical Co. Ltd, Mudanjiang, 157000, China
| | - Zhenguo Li
- Mudanjiang YouBo Pharmaceutical Co. Ltd, Mudanjiang, 157000, China
| | - Hong Wang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China; School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Lu Chen
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Traditional Chinese Medicine Pharmacology, Tianjin, 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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Chung J, Kim KH, Yu N, An SH, Lee S, Kwon K. Fluid Shear Stress Regulates the Landscape of microRNAs in Endothelial Cell-Derived Small Extracellular Vesicles and Modulates the Function of Endothelial Cells. Int J Mol Sci 2022; 23:ijms23031314. [PMID: 35163238 PMCID: PMC8836123 DOI: 10.3390/ijms23031314] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/19/2022] [Accepted: 01/19/2022] [Indexed: 12/10/2022] Open
Abstract
Blood fluid shear stress (FSS) modulates endothelial function and vascular pathophysiology. The small extracellular vesicles (sEVs) such as exosomes are potent mediators of intercellular communication, and their contents reflect cellular stress. Here, we explored the miRNA profiles in endothelial cells (EC)-derived sEVs (EC-sEVs) under atheroprotective laminar shear stress (LSS) and atheroprone low-oscillatory shear stress (OSS) and conducted a network analysis to identify the main biological processes modulated by sEVs’ miRNAs. The EC-sEVs were collected from culture media of human umbilical vein endothelial cells exposed to atheroprotective LSS (20 dyne/cm2) and atheroprone OSS (±5 dyne/cm2). We explored the miRNA profiles in FSS-induced EC-sEVs (LSS-sEVs and OSS-sEVs) and conducted a network analysis to identify the main biological processes modulated by sEVs’ miRNAs. In vivo studies were performed in a mouse model of partial carotid ligation. The sEVs’ miRNAs-targeted genes were enriched for endothelial activation such as angiogenesis, cell migration, and vascular inflammation. OSS-sEVs promoted tube formation, cell migration, monocyte adhesion, and apoptosis, and upregulated the expression of proteins that stimulate these biological processes. FSS-induced EC-sEVs had the same effects on endothelial mechanotransduction signaling as direct stimulation by FSS. In vivo studies showed that LSS-sEVs reduced the expression of pro-inflammatory genes, whereas OSS-sEVs had the opposite effect. Understanding the landscape of EC-exosomal miRNAs regulated by differential FSS patterns, this research establishes their biological functions on a system level and provides a platform for modulating the overall phenotypic effects of sEVs.
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Affiliation(s)
- Jihwa Chung
- Exollence Biotechnology Co., Ltd., Seoul 07985, Korea; (J.C.); (K.H.K.); (S.H.A.)
| | - Kyoung Hwa Kim
- Exollence Biotechnology Co., Ltd., Seoul 07985, Korea; (J.C.); (K.H.K.); (S.H.A.)
| | - Namhee Yu
- Research Institute, National Cancer Center, Goyangsi 10408, Korea;
| | - Shung Hyun An
- Exollence Biotechnology Co., Ltd., Seoul 07985, Korea; (J.C.); (K.H.K.); (S.H.A.)
| | - Sanghyuk Lee
- Department of Life Sciences, Ewha Womans University, Seoul 03760, Korea;
| | - Kihwan Kwon
- Exollence Biotechnology Co., Ltd., Seoul 07985, Korea; (J.C.); (K.H.K.); (S.H.A.)
- Department of Internal Medicine, Cardiology Division, School of Medicine, Ewha Womans University, Seoul 07985, Korea
- Correspondence: ; Tel.: +82-2-2650-2640
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Guo L, Wen X, Hou Y, Sun R, Zhang L, Liu F, Liu J. Dihydroartemisinin inhibits endothelial cell migration via the TGF-β1/ALK5/SMAD2 signaling pathway. Exp Ther Med 2021; 22:709. [PMID: 34007318 PMCID: PMC8120513 DOI: 10.3892/etm.2021.10141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 03/12/2021] [Indexed: 01/01/2023] Open
Abstract
Anti-angiogenesis therapy is a novel treatment method for malignant tumors. Endothelial cell (EC) migration is an important part of angiogenesis. Dihydroartemisinin (DHA) exhibits strong anti-angiogenic and anti-EC migration effects; however, the underlying molecular mechanisms are yet to be elucidated. The TGF-β1/activin receptor-like kinase 5 (ALK5)/SMAD2 signaling pathway serves an important role in the regulation of migration. The present study aimed to explore the effects of DHA treatment on EC migration and the TGF-β1/ALK5/SMAD2 signaling pathway. The effects of DHA on human umbilical vein EC migration were assessed using wound healing and Transwell assays. The effects of DHA on the TGF-β1/ALK5/SMAD2 signaling pathway were detected using western blotting. DHA exhibited an inhibitory effect on EC migration in the wound healing and Transwell assays. DHA treatment upregulated the expression levels of ALK5 and increased the phosphorylation of SMAD2 in ECs. SB431542 rescued the inhibitory effect of DHA during EC migration. DHA inhibited EC migration via the TGF-β1/ALK5/SMAD2-dependent signaling pathway, and DHA may be a novel drug for the treatment of patients with malignant tumors.
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Affiliation(s)
- Ling Guo
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Cardiac Electrophysiology and Arrhythmia, Shandong University, Jinan, Shandong 250014, P.R. China.,Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Xiaoqing Wen
- Department of Clinical Medicine, Weifang Medical University, Weifang, Shandong 261042, P.R. China
| | - Yinglong Hou
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Cardiac Electrophysiology and Arrhythmia, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Rong Sun
- Advanced Medical Research Institute, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Liang Zhang
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Institute of Biomedical Sciences, College of Life Sciences, Shandong Normal University, Jinan, Shandong 250014, P.R. China
| | - Fuhong Liu
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Ju Liu
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
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5
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Involvement of Actin and Actin-Binding Proteins in Carcinogenesis. Cells 2020; 9:cells9102245. [PMID: 33036298 PMCID: PMC7600575 DOI: 10.3390/cells9102245] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/18/2020] [Accepted: 10/05/2020] [Indexed: 12/13/2022] Open
Abstract
The actin cytoskeleton plays a crucial role in many cellular processes while its reorganization is important in maintaining cell homeostasis. However, in the case of cancer cells, actin and ABPs (actin-binding proteins) are involved in all stages of carcinogenesis. Literature has reported that ABPs such as SATB1 (special AT-rich binding protein 1), WASP (Wiskott-Aldrich syndrome protein), nesprin, and villin take part in the initial step of carcinogenesis by regulating oncogene expression. Additionally, changes in actin localization promote cell proliferation by inhibiting apoptosis (SATB1). In turn, migration and invasion of cancer cells are based on the formation of actin-rich protrusions (Arp2/3 complex, filamin A, fascin, α-actinin, and cofilin). Importantly, more and more scientists suggest that microfilaments together with the associated proteins mediate tumor vascularization. Hence, the presented article aims to summarize literature reports in the context of the potential role of actin and ABPs in all steps of carcinogenesis.
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Kalkan BM, Akgol S, Ak D, Yucel D, Guney Esken G, Kocabas F. CASIN and AMD3100 enhance endothelial cell proliferation, tube formation and sprouting. Microvasc Res 2020; 130:104001. [PMID: 32198058 DOI: 10.1016/j.mvr.2020.104001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 02/27/2020] [Accepted: 03/14/2020] [Indexed: 01/12/2023]
Abstract
Endothelial dysfunction is prominent in atherosclerosis, hypertension, diabetes, peripheral and cardiovascular diseases, and stroke. Novel therapeutic approaches to these conditions often involve development of tissue-engineered veins with ex vivo expanded endothelial cells. However, high cell number requirements limit these approaches to become applicable to clinical applications and highlight the requirement of technologies that accelerate expansion of vascular-forming cells. We have previously shown that novel small molecules could induce hematopoietic stem cell expansion ex vivo. We hypothesized that various small molecules targeting hematopoietic stem cell quiescence and mobilization could be used to induce endothelial cell expansion and angiogenesis due to common origin and shared characteristics of endothelial and hematopoietic cells. Here, we have screened thirty-five small molecules and found that CASIN and AMD3100 increase endothelial cell expansion up to two-fold and induce tube formation and ex vivo sprouting. In addition, we have studied how CASIN and AMD3100 affect cell migration, apoptosis and cell cycle of endothelial cells. CASIN and AMD3100 upregulate key endothelial marker genes and downregulate a number of cyclin dependent kinase inhibitors. These findings suggest that CASIN and AMD3100 could be further tested in the development of artificial vascular systems and vascular gene editing technologies. Furthermore, these findings may have potential to contribute to the development of alternative treatment methods for diseases that cause endothelial damage.
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Affiliation(s)
- Batuhan Mert Kalkan
- Regenerative Biology Research Laboratory, Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey; Koc University, Istanbul, Turkey
| | - Sezer Akgol
- Regenerative Biology Research Laboratory, Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Deniz Ak
- Regenerative Biology Research Laboratory, Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey; Middle East Technical University, Ankara, Turkey
| | - Dogacan Yucel
- Faculty of Medicine, University of Minnesota, MN, USA
| | - Gulen Guney Esken
- Regenerative Biology Research Laboratory, Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Fatih Kocabas
- Regenerative Biology Research Laboratory, Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey.
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Ma LL, Guo LL, Luo Y, Liu GL, Lei Y, Jing FY, Zhang YL, Tong GH, Jing ZL, Shen L, Tang MS, Ding YQ, Deng YJ. Cdc42 subcellular relocation in response to VEGF/NRP1 engagement is associated with the poor prognosis of colorectal cancer. Cell Death Dis 2020; 11:171. [PMID: 32139668 PMCID: PMC7058620 DOI: 10.1038/s41419-020-2370-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 12/19/2022]
Abstract
Microscopic indications of malignancy and hallmark molecules of cancer are pivotal to determining cancer patient prognosis and subsequent medical intervention. Here, we found that compared to apical expression of Cdc42, which indicated that basal expression of Cdc42 occurred at the migrating cell front, glandular basal expression of Cdc42 (cell division cycle 42) in tissues indicated poorer prognoses for colorectal cancer (CRC) patients. The current study shows that activated Cdc42 was rapidly recruited to the migrating CRC cell front after VEGF stimulation through engagement of membrane-anchored neuropilin-1 (NRP1). When VEGF signalling was blocked with NRP1 knockdown or ATWLPPR (A7R, antagonist of VEGF/NRP1 interaction), Cdc42 activation and relocation to the cell front was attenuated, and filopodia and invadopodia formation was inhibited. The VEGF/NRP1 axis regulates directional migration, invasion, and metastasis through Cdc42 activation and relocation resulting from actin filament polymerisation of the extensions of membrane protrusions. Collectively, the immuno-micromorphological pattern of subcellular Cdc42 at the cell front indicated aggressive behaviours and predicted poor prognosis in CRC patients. Disruption of the intra- and extracellular interactions of the VEGF/NRP1 axis or Cdc42 relocation could be performed in clinical practice because it might inhibit cancer cell motility and metastasis.
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Affiliation(s)
- Li-Li Ma
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, 510515, Guangzhou, China
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, 510515, Guangzhou, China
- Department of Pathology, Guang dong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 510515, Guangzhou, China
| | - Li-Li Guo
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, 510515, Guangzhou, China
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, 510515, Guangzhou, China
- Department of Pathology, First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, 471000, Luoyang, Henan Province, China
| | - Yang Luo
- Department of Urinary Surgery, the Fifth Affiliated Hospital of Southern Medical University, 510900, Guangzhou, China
| | - Guang-Long Liu
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, 510515, Guangzhou, China
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, 510515, Guangzhou, China
| | - Yan Lei
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, 510515, Guangzhou, China
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, 510515, Guangzhou, China
| | - Fang-Yan Jing
- Department of Anorectal Surgery, Nanfang Hospital, Southern Medical University, 510515, Guangzhou, China
| | - Yun-Li Zhang
- Department of Oncology, Inner Mongolia Medical University, Hohhot, 010110, China
| | - Gui-Hui Tong
- Department of Pathology, General Hospital of Southern military Command, 510010, Guangzhou, China
| | - Zhi-Liang Jing
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, 510515, Guangzhou, China
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, 510515, Guangzhou, China
| | - Lan Shen
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, 510515, Guangzhou, China
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, 510515, Guangzhou, China
| | - Min-Shan Tang
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, 510515, Guangzhou, China
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, 510515, Guangzhou, China
| | - Yan-Qing Ding
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, 510515, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, 510515, Guangzhou, China.
| | - Yong-Jian Deng
- Department of Pathology, Nanfang Hospital and School of Basic Medical Sciences, Southern Medical University, 510515, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Molecular Tumor Pathology, 510515, Guangzhou, China.
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8
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Paddillaya N, Mishra A, Kondaiah P, Pullarkat P, Menon GI, Gundiah N. Biophysics of Cell-Substrate Interactions Under Shear. Front Cell Dev Biol 2019; 7:251. [PMID: 31781558 PMCID: PMC6857480 DOI: 10.3389/fcell.2019.00251] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 10/10/2019] [Indexed: 12/31/2022] Open
Abstract
Cells adhere to substrates through mechanosensitive focal adhesion complexes. Measurements that probe how cells detach from substrates when they experience an applied force connect molecular-scale aspects of cell adhesion with the biophysical properties of adherent cells. Such forces can be applied through shear devices that flow fluid in a controlled manner across cells. The signaling pathways associated with focal adhesions, in particular those that involve integrins and receptor tyrosine kinases, are complex, receiving mechano-chemical feedback from the sensing of substrate stiffness as well as of external forces. This article reviews the signaling processes involved in mechanosensing and mechanotransduction during cell-substrate interactions, describing the role such signaling plays in cancer metastasis. We examine some recent progress in quantifying the strength of these interactions, describing a novel fluid shear device that allows for the visualization of the cell and its sub-cellular structures under a shear flow. We also summarize related results from a biophysical model for cellular de-adhesion induced by applied forces. Quantifying cell-substrate adhesions under shear should aid in the development of mechano-diagnostic techniques for diseases in which cell-adhesion is mis-regulated, such as cancers.
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Affiliation(s)
- Neha Paddillaya
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India
| | - Ashish Mishra
- Soft Condensed Matter Group, Raman Research Institute, Bangalore, India
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
| | - Pramod Pullarkat
- Soft Condensed Matter Group, Raman Research Institute, Bangalore, India
| | - Gautam I Menon
- The Institute of Mathematical Sciences, Chennai, India.,Homi Bhabha National Institute, Mumbai, India.,Department of Physics, Ashoka University, Sonepat, India
| | - Namrata Gundiah
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India.,Department of Mechanical Engineering, Indian Institute of Science, Bangalore, India
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9
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Hu S, Liu Y, You T, Zhu L. Semaphorin 7A Promotes VEGFA/VEGFR2-Mediated Angiogenesis and Intraplaque Neovascularization in ApoE-/- Mice. Front Physiol 2018; 9:1718. [PMID: 30555351 PMCID: PMC6284023 DOI: 10.3389/fphys.2018.01718] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 11/15/2018] [Indexed: 12/21/2022] Open
Abstract
Excessive neovascularization of atherosclerotic lesions increases plaque vulnerability and the susceptibility to rupture. Semaphorin 7A (Sema7A), a semaphorin family member, was recently reported to promote atherosclerotic plaque formation by mediating d-flow-induced endothelial phenotypic change and leukocyte adhesion. To extend our understanding of the proatherogenic role of Sema7A, we investigated the role of endothelial Sema7A in angiogenesis and atherosclerotic neovascularization. Sema7A overexpression in human umbilical vein endothelial cells (HUVECs) significantly upregulated VEGFA/VEGFR2 and promoted cell migration and angiogenesis. This enhancing effect was eliminated by the blockage of Sema7A receptor, β1 integrin. Inhibition of FAK or ERK1/2 downstream of β1 integrin signaling significantly inhibited cell migration and angiogenesis via ROCK (Rho-associated coiled forming protein kinase) and MYPT (myosin phosphatase targeting subunit), which are responsible for actin polymerization. Consistently, in vivo studies showed a remarkable reduction in VEGFA/VEGFR2 expression and neovascularization in the atherosclerotic plaques of Sema7A-/-ApoE-/- mice compared with Sema7A+/+ApoE-/- littermates. Supportively, Sema7A deficiency reduced the accumulation of T cells, macrophages, and dendritic cells, and enhanced plaque stability in ApoE-/- mice. Together, our findings show that Sema7A promotes VEGFA/VEGFR2-mediated neovascularization in a β1 integrin-dependent manner, supporting a crucial role of Sema7A in the progression of human atherosclerosis.
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Affiliation(s)
- Shuhong Hu
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology of Jiangsu Province, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China
| | - Yifei Liu
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology of Jiangsu Province, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China
| | - Tao You
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology of Jiangsu Province, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China
| | - Li Zhu
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology of Jiangsu Province, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China
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10
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Liu J, Wada Y, Katsura M, Tozawa H, Erwin N, Kapron CM, Bao G, Liu J. Rho-Associated Coiled-Coil Kinase (ROCK) in Molecular Regulation of Angiogenesis. Am J Cancer Res 2018; 8:6053-6069. [PMID: 30613282 PMCID: PMC6299434 DOI: 10.7150/thno.30305] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 10/16/2018] [Indexed: 02/06/2023] Open
Abstract
Identified as a major downstream effector of the small GTPase RhoA, Rho-associated coiled-coil kinase (ROCK) is a versatile regulator of multiple cellular processes. Angiogenesis, the process of generating new capillaries from the pre-existing ones, is required for the development of various diseases such as cancer, diabetes and rheumatoid arthritis. Recently, ROCK has attracted attention for its crucial role in angiogenesis, making it a promising target for new therapeutic approaches. In this review, we summarize recent advances in understanding the role of ROCK signaling in regulating the permeability, migration, proliferation and tubulogenesis of endothelial cells (ECs), as well as its functions in non-ECs which constitute the pro-angiogenic microenvironment. The therapeutic potential of ROCK inhibitors in angiogenesis-related diseases is also discussed.
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11
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Pi J, Liu J, Zhuang T, Zhang L, Sun H, Chen X, Zhao Q, Kuang Y, Peng S, Zhou X, Yu Z, Tao T, Tomlinson B, Chan P, Tian Y, Fan H, Liu Z, Zheng X, Morrisey E, Zhang Y. Elevated Expression of miR302-367 in Endothelial Cells Inhibits Developmental Angiogenesis via CDC42/CCND1 Mediated Signaling Pathways. Theranostics 2018; 8:1511-1526. [PMID: 29556338 PMCID: PMC5858164 DOI: 10.7150/thno.21986] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 11/14/2017] [Indexed: 12/22/2022] Open
Abstract
Rationale: Angiogenesis is critical for embryonic development and microRNAs fine-tune this process, but the underlying mechanisms remain incompletely understood. Methods: Endothelial cell (EC) specific miR302-367 line was used as gain-of-function and anti-miRs as loss-of-function models to investigate the effects of miR302-367 on developmental angiogenesis with embryonic hindbrain vasculature as an in vivo model and fibrin gel beads and tube formation assay as in vitro models. Cell migration was evaluated by Boyden chamber and scratch wound healing assay and cell proliferation by cell count, MTT assay, Ki67 immunostaining and PI cell cycle analysis. RNA high-throughput sequencing identified miR-target genes confirmed by chromatin immunoprecipitation and 3'-UTR luciferase reporter assay, and finally target site blocker determined the pathway contributing significantly to the phenotype observed upon microRNA expression. Results: Elevated EC miR302-367 expression reduced developmental angiogenesis, whereas it was enhanced by inhibition of miR302-367, possibly due to the intrinsic inhibitory effects on EC migration and proliferation. We identified Cdc42 as a direct target gene and elevated EC miR302-367 decreased total and active Cdc42, and further inhibited F-actin formation via the WASP and Klf2/Grb2/Pak1/LIM-kinase/Cofilin pathways. MiR302-367-mediated-Klf2 regulation of Grb2 for fine-tuning Pak1 activation contributing to the inhibited F-actin formation, and then the attenuation of EC migration. Moreover, miR302-367 directly down-regulated EC Ccnd1 and impaired cell proliferation via the Rb/E2F pathway. Conclusion: miR302-367 regulation of endothelial Cdc42 and Ccnd1 signal pathways for EC migration and proliferation advances our understanding of developmental angiogenesis, and meanwhile provides a rationale for future interventions of pathological angiogenesis that shares many common features of physiological angiogenesis.
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12
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Manaenko A, Yang P, Nowrangi D, Budbazar E, Hartman RE, Obenaus A, Pearce WJ, Zhang JH, Tang J. Inhibition of stress fiber formation preserves blood-brain barrier after intracerebral hemorrhage in mice. J Cereb Blood Flow Metab 2018; 38:87-102. [PMID: 27864464 PMCID: PMC5757435 DOI: 10.1177/0271678x16679169] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Intracerebral hemorrhage (ICH) represents the deadliest subtype of all strokes. The development of brain edema, a consequence of blood-brain barrier (BBB) disruption, is the most life-threatening event after ICH. Pathophysiological conditions activate the endothelium, one of the components of BBB, inducing rearrangement of the actin cytoskeleton. Upon activation, globular actin assembles into a filamentous actin resulting in the formation of contractile actin bundles, stress fibers. The contraction of stress fibers leads to the formation of intercellular gaps between endothelial cells increasing the permeability of BBB. In the present study, we investigated the effect of ICH on stress fiber formation in CD1 mice. We hypothesized that ICH-induced formation of stress fiber is triggered by the activation of PDGFR-β and mediated by the cortactin/RhoA/LIMK pathway. We demonstrated that ICH induces formation of stress fibers. Furthermore, we demonstrated that the inhibition of PDGFR-β and its downstream reduced the number of stress fibers, preserving BBB and resulting in the amelioration of brain edema and improvement of neurological functions in mice after ICH.
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Affiliation(s)
- Anatol Manaenko
- 1 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA.,2 Department of Neurology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Peng Yang
- 1 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA.,3 Department of Emergency Surgery, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Derek Nowrangi
- 1 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Enkhjargal Budbazar
- 1 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Richard E Hartman
- 4 Department of Psychology, Loma Linda University, Loma Linda, CA, USA
| | - Andre Obenaus
- 5 Department of Pediatrics, Loma Linda University, Loma Linda, CA, USA
| | - William J Pearce
- 1 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - John H Zhang
- 1 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA.,6 Department of Anesthesiology, Loma Linda University, Loma Linda, CA, USA.,7 Department of Neurosurgery, Loma Linda University, Loma Linda, CA, USA
| | - Jiping Tang
- 1 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
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13
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Spurlin JW, Nelson CM. Building branched tissue structures: from single cell guidance to coordinated construction. Philos Trans R Soc Lond B Biol Sci 2017; 372:rstb.2015.0527. [PMID: 28348257 DOI: 10.1098/rstb.2015.0527] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/01/2016] [Indexed: 12/15/2022] Open
Abstract
Branched networks are ubiquitous throughout nature, particularly found in tissues that require large surface area within a restricted volume. Many tissues with a branched architecture, such as the vasculature, kidney, mammary gland, lung and nervous system, function to exchange fluids, gases and information throughout the body of an organism. The generation of branched tissues requires regulation of branch site specification, initiation and elongation. Branching events often require the coordination of many cells to build a tissue network for material exchange. Recent evidence has emerged suggesting that cell cooperativity scales with the number of cells actively contributing to branching events. Here, we compare mechanisms that regulate branching, focusing on how cell cohorts behave in a coordinated manner to build branched tissues.This article is part of the themed issue 'Systems morphodynamics: understanding the development of tissue hardware'.
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Affiliation(s)
- James W Spurlin
- Departments of Chemical and Biological Engineering, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ 08544, USA
| | - Celeste M Nelson
- Departments of Chemical and Biological Engineering, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ 08544, USA .,Molecular Biology, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ 08544, USA
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14
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Corre I, Paris F, Huot J. The p38 pathway, a major pleiotropic cascade that transduces stress and metastatic signals in endothelial cells. Oncotarget 2017; 8:55684-55714. [PMID: 28903453 PMCID: PMC5589692 DOI: 10.18632/oncotarget.18264] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 05/03/2017] [Indexed: 12/29/2022] Open
Abstract
By gating the traffic of molecules and cells across the vessel wall, endothelial cells play a central role in regulating cardiovascular functions and systemic homeostasis and in modulating pathophysiological processes such as inflammation and immunity. Accordingly, the loss of endothelial cell integrity is associated with pathological disorders that include atherosclerosis and cancer. The p38 mitogen-activated protein kinase (MAPK) cascades are major signaling pathways that regulate several functions of endothelial cells in response to exogenous and endogenous stimuli including growth factors, stress and cytokines. The p38 MAPK family contains four isoforms p38α, p38β, p38γ and p38δ that are encoded by four different genes. They are all widely expressed although to different levels in almost all human tissues. p38α/MAPK14, that is ubiquitously expressed is the prototype member of the family and is referred here as p38. It regulates the production of inflammatory mediators, and controls cell proliferation, differentiation, migration and survival. Its activation in endothelial cells leads to actin remodeling, angiogenesis, DNA damage response and thereby has major impact on cardiovascular homeostasis, and on cancer progression. In this manuscript, we review the biology of p38 in regulating endothelial functions especially in response to oxidative stress and during the metastatic process.
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Affiliation(s)
- Isabelle Corre
- CRCINA, INSERM, CNRS, Université de Nantes, Nantes, France
| | - François Paris
- CRCINA, INSERM, CNRS, Université de Nantes, Nantes, France
| | - Jacques Huot
- Le Centre de Recherche du CHU de Québec-Université Laval et le Centre de Recherche sur le Cancer de l'Université Laval, Québec, Canada
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15
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Li T, Yang L, Fu SJ, Xiao EL, Yuan X, Lu JZ, Ma BL, Shi TK, Wang ZP. Subcutaneous Injections of the Mannose-Sensitive Hemagglutination Pilus Strain of Pseudomonas aeruginosa Stimulate Host Immunity, Reduce Bladder Cancer Size and Improve Tumor Survival in Mice. Cell Biochem Biophys 2017; 73:245-52. [PMID: 25724441 DOI: 10.1007/s12013-015-0611-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We wished to evaluate the effects of Pseudomonas aeruginosa (mannose-sensitive hemagglutination pilus strain, PA-MSHA) as an immunostimulating and anti-tumor agent for treatment of bladder cancer. Immunostimulating effects were assessed by the in vitro proliferation assay of murine splenic lymphocytes. Anti-tumor effects were studied in a subcutaneous tumor model established in female C57BL/6 mice using the MB49 bladder cell line. These mice received subcutaneous injections of normal saline (control group) or PA-MSHA (high, medium, or low dose, respectively, 1.6-2.0 × 10(9), 3.2- .0 × 10(8), 6.4-8.0 × 10(7) CFU/ml) twice a week for 3 weeks. Mice survival, tumor volume, vascular endothelial growth factor (VEGF) expression, microvessel density (MVD), serum levels of TNF-α and IFN-γ, and blood CD4(+) /CD8(+) counts were the study outcomes. We observed that PA-MSHA promoted the growth of splenic lymphocytes in vitro. In the murine tumor model, PA-MSHA prolonged mice survival and reduced tumor growth. Furthermore, VEGF and MVD were also diminished by PA-MSHA. Mice that received high and medium dose of PA-MSHA had significantly higher serum levels of IFN-γ and TNF-α (days 21 and 28), and higher levels of CD4(+) /CD8(+) cells (days 21 and 28). In conclusion, PA-MSHA exerts beneficial effects on increasing proliferation of murine splenic lymphocytes in vitro and inhibits the growth of bladder tumor in a murine model. Therefore, PA-MSHA may be useful an immunostimulating and anti-tumor agent for bladder cancer therapy.
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Affiliation(s)
- Tao Li
- Institute of Urology, Department of Urology, Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, , Lanzhou University Second Hospital, 82 Cui YingMen Street, Lanzhou, 730030, Gansu, China
| | - Li Yang
- Institute of Urology, Department of Urology, Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, , Lanzhou University Second Hospital, 82 Cui YingMen Street, Lanzhou, 730030, Gansu, China
| | - Sheng-Jun Fu
- Institute of Urology, Department of Urology, Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, , Lanzhou University Second Hospital, 82 Cui YingMen Street, Lanzhou, 730030, Gansu, China
| | - Er-Long Xiao
- Institute of Urology, Department of Urology, Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, , Lanzhou University Second Hospital, 82 Cui YingMen Street, Lanzhou, 730030, Gansu, China
| | - Xuan Yuan
- Institute of Urology, Department of Urology, Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, , Lanzhou University Second Hospital, 82 Cui YingMen Street, Lanzhou, 730030, Gansu, China
| | - Jian-Zhong Lu
- Institute of Urology, Department of Urology, Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, , Lanzhou University Second Hospital, 82 Cui YingMen Street, Lanzhou, 730030, Gansu, China
| | - Bao-Liang Ma
- Institute of Urology, Department of Urology, Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, , Lanzhou University Second Hospital, 82 Cui YingMen Street, Lanzhou, 730030, Gansu, China
| | - Ting-Kai Shi
- Institute of Urology, Department of Urology, Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, , Lanzhou University Second Hospital, 82 Cui YingMen Street, Lanzhou, 730030, Gansu, China
| | - Zhi-Ping Wang
- Institute of Urology, Department of Urology, Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, , Lanzhou University Second Hospital, 82 Cui YingMen Street, Lanzhou, 730030, Gansu, China.
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Abstract
Vascular endothelial growth factor (VEGF) plays a fundamental role in angiogenesis and endothelial cell biology, and has been the subject of intense study as a result. VEGF acts via a diverse and complex range of signaling pathways, with new targets constantly being discovered. This review attempts to summarize the current state of knowledge regarding VEGF cell signaling in endothelial and cardiovascular biology, with a particular emphasis on its role in angiogenesis.
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Affiliation(s)
- Ian Evans
- Centre for Cardiovascular Biology and Medicine, Division of Medicine, University College London, Rayne Building, 5 University Street, London, WC1E 6JF, UK,
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17
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Hartmann S, Ridley AJ, Lutz S. The Function of Rho-Associated Kinases ROCK1 and ROCK2 in the Pathogenesis of Cardiovascular Disease. Front Pharmacol 2015; 6:276. [PMID: 26635606 PMCID: PMC4653301 DOI: 10.3389/fphar.2015.00276] [Citation(s) in RCA: 209] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 11/03/2015] [Indexed: 01/26/2023] Open
Abstract
Rho-associated kinases ROCK1 and ROCK2 are serine/threonine kinases that are downstream targets of the small GTPases RhoA, RhoB, and RhoC. ROCKs are involved in diverse cellular activities including actin cytoskeleton organization, cell adhesion and motility, proliferation and apoptosis, remodeling of the extracellular matrix and smooth muscle cell contraction. The role of ROCK1 and ROCK2 has long been considered to be similar; however, it is now clear that they do not always have the same functions. Moreover, depending on their subcellular localization, activation, and other environmental factors, ROCK signaling can have different effects on cellular function. With respect to the heart, findings in isoform-specific knockout mice argue for a role of ROCK1 and ROCK2 in the pathogenesis of cardiac fibrosis and cardiac hypertrophy, respectively. Increased ROCK activity could play a pivotal role in processes leading to cardiovascular diseases such as hypertension, pulmonary hypertension, angina pectoris, vasospastic angina, heart failure, and stroke, and thus ROCK activity is a potential new biomarker for heart disease. Pharmacological ROCK inhibition reduces the enhanced ROCK activity in patients, accompanied with a measurable improvement in medical condition. In this review, we focus on recent findings regarding ROCK signaling in the pathogenesis of cardiovascular disease, with a special focus on differences between ROCK1 and ROCK2 function.
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Affiliation(s)
- Svenja Hartmann
- Institute of Pharmacology, University Medical Center Göttingen, Georg-August-University Göttingen, Göttingen, Germany
- German Center for Cardiovascular Research, Göttingen, Germany
- Randall Division of Cell and Molecular Biophysics, King’s College London, London, UK
| | - Anne J. Ridley
- Randall Division of Cell and Molecular Biophysics, King’s College London, London, UK
| | - Susanne Lutz
- Institute of Pharmacology, University Medical Center Göttingen, Georg-August-University Göttingen, Göttingen, Germany
- German Center for Cardiovascular Research, Göttingen, Germany
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18
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Singh N, Joshi S, Guo L, Baker MB, Li Y, Castellano RK, Raizada MK, Jarajapu YPR. ACE2/Ang-(1-7)/Mas axis stimulates vascular repair-relevant functions of CD34+ cells. Am J Physiol Heart Circ Physiol 2015; 309:H1697-707. [PMID: 26386115 DOI: 10.1152/ajpheart.00854.2014] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 09/04/2015] [Indexed: 01/08/2023]
Abstract
CD34(+) stem/progenitor cells have been identified as a promising cell population for the autologous cell-based therapies in patients with cardiovascular disease. The counter-regulatory axes of renin angiotensin system, angiotensin converting enzyme (ACE)/Ang II/angiotensin type 1 (AT1) receptor and ACE2/Ang-(1-7)/Mas receptor, play an important role in the cardiovascular repair. This study evaluated the expression and vascular repair-relevant functions of these two pathways in human CD34(+) cells. CD34(+) cells were isolated from peripheral blood mononuclear cells (MNCs), obtained from healthy volunteers. Expression of ACE, ACE2, AT1, and angiotensin type 2 and Mas receptors were determined. Effects of Ang II, Ang-(1-7), Norleu(3)-Ang-(1-7), and ACE2 activators, xanthenone (XNT) and diminazene aceturate (DIZE) on proliferation, migration, and adhesion of CD34(+) cells were evaluated. ACE2 and Mas were relatively highly expressed in CD34(+) cells compared with MNCs. Ang-(1-7) or its analog, Norleu(3)-Ang-(1-7), stimulated proliferation of CD34(+) cells that was associated with decrease in phosphatase and tensin homologue deleted on chromosome 10 levels and was inhibited by triciribin, an AKT inhibitor. Migration of CD34(+) cells was enhanced by Ang-(1-7) or Norleu(3)-Ang-(1-7) that was decreased by a Rho-kinase inhibitor, Y-27632. In the presence of Ang II, XNT or DIZE enhanced proliferation and migration that were blocked by DX-600, an ACE2 inhibitor. Treatment of MNCs with Ang II, before the isolation of CD34(+) cells, attenuated the proliferation and migration to stromal derived factor-1α. This attenuation was reversed by apocynin, an NADPH oxidase inhibitor. Adhesion of MNCs or CD34(+) cells to fibronectin was enhanced by Ang II and was unaffected by Ang-(1-7). This study suggests that ACE2/Ang-(1-7)/Mas pathway stimulates functions of CD34(+) cells that are cardiovascular protective, whereas Ang II attenuates these functions by acting on MNCs. These findings imply that activation of ACE2/Ang-(1-7)/Mas axis is a promising approach for enhancing reparative outcomes of cell-based therapies.
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Affiliation(s)
- Neha Singh
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota
| | - Shrinidh Joshi
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota
| | - Lirong Guo
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota; Department of Pathophysiology, College of Basic Medical Science, Jilin University, Changchun, Jilin, China
| | - Matthew B Baker
- Department of Chemistry, University of Florida, Gainesville, Florida; and
| | - Yan Li
- Department of Chemistry, University of Florida, Gainesville, Florida; and
| | | | - Mohan K Raizada
- Department of Physiology and Functional Genomics, College of Medicine, University of Florida, Gainesville, Florida
| | - Yagna P R Jarajapu
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota;
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19
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Ng CT, Fong LY, Sulaiman MR, Moklas MAM, Yong YK, Hakim MN, Ahmad Z. Interferon-Gamma Increases Endothelial Permeability by Causing Activation of p38 MAP Kinase and Actin Cytoskeleton Alteration. J Interferon Cytokine Res 2015; 35:513-22. [DOI: 10.1089/jir.2014.0188] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Chin Theng Ng
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Lai Yen Fong
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Mohd Roslan Sulaiman
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Mohamad Aris Mohd Moklas
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Yoke Keong Yong
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Muhammad Nazrul Hakim
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Zuraini Ahmad
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
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20
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Spagnol ST, Dahl KN. Active cytoskeletal force and chromatin condensation independently modulate intranuclear network fluctuations. Integr Biol (Camb) 2014; 6:523-31. [PMID: 24619297 DOI: 10.1039/c3ib40226f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Chromatin remodeling, including the movement of genes and regulatory factors, precedes or accompanies stimulated changes in gene expression. Here we quantify chromatin fluctuations in primary human cells using particle-tracking microrheology and determine the physical mechanisms which influence chromatin reorganization. We find that intranuclear movements are enhanced beyond thermal motion by active force generation from cytoskeletal motor activity propagated through the LINC complex; intranuclear movements are also dependent on the viscoelasticity of the DNA-protein polymer network. Chromatin movements were dramatically altered by modulation of chromatin condensation state, which we independently verified using fluorescence lifetime imaging microscopy (FLIM). These findings suggest that chromatin condensation and cytoskeletal force generation play distinct functional roles in regulating intranuclear movements, and these effects are decoupled as measured by particle tracking. We further utilize this approach in identifying the nuclear responsiveness of primary human endothelial cells to vascular endothelial growth factor (VEGF): early in the response chromatin movements increase and are dominated by cytoskeletal force, which transitions at later times to a chromatin decondensation event. Given the hierarchical genome organization in primary cells, our work generally suggests an important role for force generation and chromatin mechanics in altered gene expression kinetics.
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Affiliation(s)
- Stephen T Spagnol
- Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, PA 15213, USA
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21
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Ollero M, Sahali D. Inhibition of the VEGF signalling pathway and glomerular disorders. Nephrol Dial Transplant 2014; 30:1449-55. [PMID: 25480873 DOI: 10.1093/ndt/gfu368] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 10/27/2014] [Indexed: 11/14/2022] Open
Abstract
Anti-cancer therapeutic approaches targeting the vascular endothelial growth factor (VEGF) ligand (anti-VEGF) or inhibiting its receptors (RTKI) have recently been developed. In spite of the promising results achieved, a serious drawback and dose-limiting side effect is the development, among others, of renal complications. This encompasses two glomerular pathological entities, namely minimal change/focal segmental glomerulosclerosis and thrombotic micro-angiopathy, involving two distinct cell types, podocytes and endothelial cells, respectively. The mechanisms that link anti-cancer therapy by RTKI to podocyte dysfunction and nephrotic level proteinuria are still poorly understood. Nevertheless, recent findings strongly suggest a central role of RelA, the master subunit of NF-κB and c-mip, an active player in podocyte disorders. RelA, which is up-regulated following anti-VEGF therapy, is inactivated by RTKI, leading to c-mip over-expression in the podocyte. This results in severe alterations in the architecture of podocyte actin cytoskeleton and subsequent severe proteinuria. Hence, clarifying the mechanisms linking c-mip and RelA as key pathogenic factors represents a critical goal in the understanding of different glomerulopathies. In the context of VEGF-targeted anti-cancer therapy, the study of these mechanisms along with the molecular cross-talk between podocyte and endothelial cell constitutes the basis for the emerging field of onconephrology.
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Affiliation(s)
- Mario Ollero
- INSERM, U955, Equipe 21, Créteil, France Université Paris-Est Créteil Val-de-Marne, Créteil, France
| | - Djillali Sahali
- INSERM, U955, Equipe 21, Créteil, France Université Paris-Est Créteil Val-de-Marne, Créteil, France AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Néphrologie, Créteil, France
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22
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Buvall L, Rashmi P, Lopez-Rivera E, Andreeva S, Weins A, Wallentin H, Greka A, Mundel P. Proteasomal degradation of Nck1 but not Nck2 regulates RhoA activation and actin dynamics. Nat Commun 2014; 4:2863. [PMID: 24287595 DOI: 10.1038/ncomms3863] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 11/04/2013] [Indexed: 11/09/2022] Open
Abstract
The ubiquitously expressed adapter proteins Nck1/2 interact with a multitude of effector molecules to regulate diverse cellular functions including cytoskeletal dynamics. Here we show that Nck1, but not Nck2, is a substrate of c-Cbl-mediated ubiquitination. We uncover lysine 178 in Nck1 as the evolutionarily conserved ubiquitin acceptor site. We previously reported that synaptopodin, a proline-rich actin-binding protein, induces stress fibres by blocking the Smurf1-mediated ubiquitination of RhoA. We now find that synaptopodin competes with c-Cbl for binding to Nck1, which prevents the ubiquitination of Nck1 by c-Cbl. Gene silencing of c-Cbl restores Nck1 protein abundance and stress fibres in synaptopodin knockdown cells. Similarly, expression of c-Cbl-resistant Nck1(K178R) or Nck2 containing the SH3 domain 2 of Nck1 restores stress fibres in synaptopodin-depleted podocytes through activation of RhoA signalling. These findings reveal proteasomal regulation as a key factor in the distinct and non-redundant effects of Nck on RhoA-mediated actin dynamics.
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Affiliation(s)
- Lisa Buvall
- 1] Department of Medicine, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts 02129, USA [2]
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23
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Izzedine H, Mangier M, Ory V, Zhang SY, Sendeyo K, Bouachi K, Audard V, Péchoux C, Soria JC, Massard C, Bahleda R, Bourry E, Khayat D, Baumelou A, Lang P, Ollero M, Pawlak A, Sahali D. Expression patterns of RelA and c-mip are associated with different glomerular diseases following anti-VEGF therapy. Kidney Int 2013; 85:457-70. [PMID: 24067439 DOI: 10.1038/ki.2013.344] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 05/25/2013] [Accepted: 07/12/2013] [Indexed: 12/14/2022]
Abstract
Renal toxicity constitutes a dose-limiting side effect of anticancer therapies targeting vascular endothelial growth factor (VEGF). In order to study this further, we followed up 29 patients receiving this treatment, who experienced proteinuria, hypertension, and/or renal insufficiency. Eight developed minimal change nephropathy/focal segmental glomerulopathy (MCN/FSG)-like lesions and 13 developed thrombotic microangiopathy (TMA). Patients receiving receptor tyrosine kinase inhibitors (RTKIs) mainly developed MCN/FSG-like lesions, whereas TMA complicated anti-VEGF therapy. There were no mutations in factor H, factor I, or membrane cofactor protein of the complement alternative pathway, while plasma ADAMTS13 activity persisted and anti-ADAMTS13 antibodies were undetectable in patients with TMA. Glomerular VEGF expression was undetectable in TMA and decreased in MCN/FSG. Glomeruli from patients with TMA displayed a high abundance of RelA in endothelial cells and in the podocyte nuclei, but c-mip was not detected. Conversely, MCN/FSG-like lesions exhibited a high abundance of c-mip, whereas RelA was scarcely detected. RelA binds in vivo to the c-mip promoter and prevents its transcriptional activation, whereas RelA knockdown releases c-mip activation. The RTKI sorafenib inhibited RelA activity, which then promoted c-mip expression. Thus, our results suggest that c-mip and RelA define two distinct types of renal damage associated with VEGF-targeted therapies.
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Affiliation(s)
- Hassan Izzedine
- Department of Nephrology, Pitie-Salpetriere Hospital, Paris, France
| | - Melanie Mangier
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France
| | - Virginie Ory
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France
| | - Shao-Yu Zhang
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France
| | - Kelhia Sendeyo
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France
| | - Khedidja Bouachi
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France [3] Service de Néphrologie, AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Créteil, France
| | - Vincent Audard
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France [3] Service de Néphrologie, AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Créteil, France
| | - Christine Péchoux
- INRA, UR1196 Génomique et Physiologie de la Lactation, Plateforme MIMA2, Jouy-en-Josas, France
| | | | | | | | - Edward Bourry
- Department of Nephrology, Pitie-Salpetriere Hospital, Paris, France
| | - David Khayat
- Department of Medical Oncology, Pitie-Salpetriere Hospital, Paris, France
| | - Alain Baumelou
- Department of Nephrology, Pitie-Salpetriere Hospital, Paris, France
| | - Philippe Lang
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France [3] Service de Néphrologie, AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Créteil, France
| | - Mario Ollero
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France
| | - Andre Pawlak
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France
| | - Djillali Sahali
- 1] INSERM U 955, Equipe 21, Créteil, France [2] Université Paris-Est Creteil, Créteil, France [3] Service de Néphrologie, AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Créteil, France
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24
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Uenishi E, Shibasaki T, Takahashi H, Seki C, Hamaguchi H, Yasuda T, Tatebe M, Oiso Y, Takenawa T, Seino S. Actin dynamics regulated by the balance of neuronal Wiskott-Aldrich syndrome protein (N-WASP) and cofilin activities determines the biphasic response of glucose-induced insulin secretion. J Biol Chem 2013; 288:25851-25864. [PMID: 23867458 DOI: 10.1074/jbc.m113.464420] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Actin dynamics in pancreatic β-cells is involved in insulin secretion. However, the molecular mechanisms of the regulation of actin dynamics by intracellular signals in pancreatic β-cells and its role in phasic insulin secretion are largely unknown. In this study, we elucidate the regulation of actin dynamics by neuronal Wiskott-Aldrich syndrome protein (N-WASP) and cofilin in pancreatic β-cells and demonstrate its role in glucose-induced insulin secretion (GIIS). N-WASP, which promotes actin polymerization through activation of the actin nucleation factor Arp2/3 complex, was found to be activated by glucose stimulation in insulin-secreting clonal pancreatic β-cells (MIN6-K8 β-cells). Introduction of a dominant-negative mutant of N-WASP, which lacks G-actin and Arp2/3 complex-binding region VCA, into MIN6-K8 β-cells or knockdown of N-WASP suppressed GIIS, especially the second phase. We also found that cofilin, which severs F-actin in its dephosphorylated (active) form, is converted to the phosphorylated (inactive) form by glucose stimulation in MIN6-K8 β-cells, thereby promoting F-actin remodeling. In addition, the dominant-negative mutant of cofilin, which inhibits activation of endogenous cofilin, or knockdown of cofilin reduced the second phase of GIIS. However, the first phase of GIIS occurs in the G-actin predominant state, in which cofilin activity predominates over N-WASP activity. Thus, actin dynamics regulated by the balance of N-WASP and cofilin activities determines the biphasic response of GIIS.
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Affiliation(s)
- Eita Uenishi
- From the Division of Cellular and Molecular Medicine,; the Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, and
| | | | | | - Chihiro Seki
- From the Division of Cellular and Molecular Medicine
| | | | - Takao Yasuda
- From the Division of Cellular and Molecular Medicine
| | - Masao Tatebe
- From the Division of Cellular and Molecular Medicine
| | - Yutaka Oiso
- the Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya 466-8550, and
| | - Tadaomi Takenawa
- Division of Lipid Biochemistry, and; the Integrated Center for Mass Spectrometry, Kobe University Graduate School of Medicine, Kobe 650-0017
| | - Susumu Seino
- From the Division of Cellular and Molecular Medicine,; the Integrated Center for Mass Spectrometry, Kobe University Graduate School of Medicine, Kobe 650-0017,; Division of Molecular and Metabolic Medicine,; the Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Corp., Kawaguchi, Saitama 332-0012, Japan.
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25
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Abstract
In this review we summarize the current understanding of signal transduction downstream of vascular endothelial growth factor A (VEGFA) and its receptor VEGFR2, and the relationship between these signal transduction pathways and the hallmark responses of VEGFA, angiogenesis and vascular permeability. These physiological responses involve a number of effectors, including extracellular signal-regulated kinases (ERKs), Src, phosphoinositide 3 kinase (PI3K)/Akt, focal adhesion kinase (FAK), Rho family GTPases, endothelial NO and p38 mitogen-activated protein kinase (MAPK). Several of these factors are involved in the regulation of both angiogenesis and vascular permeability. Tumour angiogenesis primarily relies on VEGFA-driven responses, which to a large extent result in a dysfunctional vasculature. The reason for this remains unclear, although it appears that certain aspects of the VEGFA-stimulated angiogenic milieu (high level of microvascular density and permeability) promote tumour expansion. The high degree of redundancy and complexity of VEGFA-driven tumour angiogenesis may explain why tumours commonly develop resistance to anti-angiogenic therapy targeting VEGFA signal transduction.
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Affiliation(s)
- L Claesson-Welsh
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.
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26
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Ghoshal P, Teng Y, Lesoon LA, Cowell JK. HIF1A induces expression of the WASF3 metastasis-associated gene under hypoxic conditions. Int J Cancer 2012; 131:E905-15. [PMID: 22581642 DOI: 10.1002/ijc.27631] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 04/25/2012] [Indexed: 12/17/2022]
Abstract
The WASF3 (WAVE3) gene is an important mediator of cell motility, invasion and metastasis and is expressed at high levels in some advanced stage tumors. In our survey of breast cancer cells, we now demonstrate that exposure to hypoxic conditions increases WASF3 expression levels in MDA231, SKBR3 and MCF7 cells. The WASF3 promoter region contains HIF1A response elements (HRE). ChIP assays demonstrate that HIF1A binds to these HRE elements in the promoter region, and luciferase reporter assays using the WASF3 gene minimal promoter shows that hypoxia results in its upregulation. Phosphorylation of WASF3 is required for its ability to affect invasion and increased phosphoactivation of WASF3 is also seen in cells challenged with hypoxia. These cells also show increased motility in the scratch wound assay. Cells in which WASF3 has been knocked down show no response to hypoxia as expected, implicating the specificity of the hypoxic response to WASF3. Overall, these experiments demonstrate WASF3 is a HIF1A-regulated gene and suggests a mechanism to explain the observation of elevated expression of WASF3 in advanced stage tumors.
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Affiliation(s)
- Pushpankur Ghoshal
- Georgia Health Sciences University Cancer Center, Augusta, GA 30912, USA
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27
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c-ABL modulates MAP kinases activation downstream of VEGFR-2 signaling by direct phosphorylation of the adaptor proteins GRB2 and NCK1. Angiogenesis 2012; 15:187-97. [PMID: 22327338 DOI: 10.1007/s10456-012-9252-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 01/19/2012] [Indexed: 10/14/2022]
Abstract
Vascular Endothelial Growth Factor-A (VEGF-A) is a key molecule in normal and tumor angiogenesis. This study addresses the role of c-ABL as a novel downstream target of VEGF-A in primary Human Umbilical Vein Endothelial Cells (HUVEC). On the basis of immunoprecipitation experiments, in vitro kinase assay and RNA interference, we demonstrate that VEGF-A induces the c-ABL kinase activity through the VEGF Receptor-2/Phosphatidylinositol-3-Kinase pathway. By treating HUVEC with the specific tyrosine kinase inhibitor STI571 and over-expressing a dominant negative c-ABL mutant, we show that the VEGF-A-activated c-ABL reduces the amplitude of Mitogen-Activated Protein Kinases (ERK1/2, JNKs and p38) activation in a dose-dependent manner by a negative feedback mechanism. By analysis of the adaptor proteins NCK1 and GRB2 mutants we further show that the negative loop on p38 is mediated by c-ABL phosphorylation at tyrosine 105 of the adaptor protein NCK1, while the phosphorylation at tyrosine 209 of GRB2 down-modulates ERK1/2 and JNKs signaling. These findings suggest that c-ABL function is to establish a correct and tightly controlled response of endothelial cells to VEGF-A during the angiogenic process.
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28
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Mehta RR, Yamada T, Taylor BN, Christov K, King ML, Majumdar D, Lekmine F, Tiruppathi C, Shilkaitis A, Bratescu L, Green A, Beattie CW, Das Gupta TK. A cell penetrating peptide derived from azurin inhibits angiogenesis and tumor growth by inhibiting phosphorylation of VEGFR-2, FAK and Akt. Angiogenesis 2011; 14:355-69. [DOI: 10.1007/s10456-011-9220-6] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Accepted: 05/17/2011] [Indexed: 01/15/2023]
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29
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Manetti F. LIM kinases are attractive targets with many macromolecular partners and only a few small molecule regulators. Med Res Rev 2011; 32:968-98. [PMID: 22886629 DOI: 10.1002/med.20230] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The LIM kinases 1 and 2 (LIMK1 and LIMK2) are dual specificity (serine/threonine and tyrosine) kinases. Although they show significant structural similarity, LIMK1 and LIMK2 show different expression, subcellular localization, and functions. They are involved in many cellular functions, such as migration, cycle, and neuronal differentiation and also have a role in pathological processes, such as cancer cell invasion and metastatis, as well as in neurodevelopmental disorders (namely, the William's syndrome). LIM kinases have a relevant number of known partners that are able to induce or limit the ability of LIMK1 and LIMK2 to phosphorylate and inactivate their major substrate, cofilin. On the contrary, only a limited number of small molecules that interact with the two proteins to modulate their kinase activity have been identified. In this review, the most important partners of LIM kinases and their modulating activity toward LIMKs are described. The small compounds identified as LIMK1 and LIMK2 modulators are also reported, as well as their role as possible therapeutic agents for LIMK-induced diseases.
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Affiliation(s)
- Fabrizio Manetti
- Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, via Alcide de Gasperi 2, I-53100 Siena, Italy.
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30
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Thi MM, Suadicani SO, Spray DC. Fluid flow-induced soluble vascular endothelial growth factor isoforms regulate actin adaptation in osteoblasts. J Biol Chem 2010; 285:30931-41. [PMID: 20682775 DOI: 10.1074/jbc.m110.114975] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Although load-induced mechanical signals play a key role in bone formation and maintenance of bone mass and structure, the cellular mechanisms involved in the translation of these signals are still not well understood. Recent identification of a novel flow-induced mechanosignaling pathway involving VEGF in osteoblasts and the known VEGF regulation of actin reorganization in various cell types has led us to hypothesize that fluid shear stress-induced Vegf up-regulation underlies the actin cytoskeleton adaptation observed in osteoblasts during mechanotransduction. Our results show that MC3T3-E1 cells secrete significant VEGF in response to 5 h of pulsatile fluid shear stress (PFSS; 5 dynes/cm(2) at 1 Hz), whereas expression of VEGF receptors (VEGFR-1, VEGFR-2, or NRP1) is unaffected. These receptors, in particular VEGFR-2, participate in PFSS-induced VEGF release. Exposure to flow-conditioned medium or exogenous VEGF significantly induces stress fiber formation in osteoblasts that is comparable with PFSS-induced stress fiber formation, whereas VEGF knockdown abrogates this response to PFSS, thereby providing evidence that flow-induced VEGF release plays a role in actin polymerization. Using neutralizing antibodies against the receptors and VEGF isoforms, we found that soluble VEGFs, in particular VEGF(164), play a crucial role in transient stress fiber formation during osteoblast mechanotransduction, most likely through VEGFR-2 and NRP1. Based on these data we conclude that flow-induced VEGF release from osteoblasts regulates osteoblast actin adaptation during mechanotransduction and that VEGF paracrine signaling may provide potent cross-talk among bone cells and endothelial cells that is essential for fracture healing, bone remodeling, and osteogenesis.
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Affiliation(s)
- Mia M Thi
- Department of Orthopaedic Surgery, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York 10461, USA
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31
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Zhuang J, Jiang T, Lu D, Luo Y, Zheng C, Feng J, Yang D, Chen C, Yan X. NADPH oxidase 4 mediates reactive oxygen species induction of CD146 dimerization in VEGF signal transduction. Free Radic Biol Med 2010; 49:227-36. [PMID: 20403426 DOI: 10.1016/j.freeradbiomed.2010.04.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2009] [Revised: 03/17/2010] [Accepted: 04/09/2010] [Indexed: 11/30/2022]
Abstract
CD146 dimerization plays an important role in tumor-induced angiogenesis. Stimulation of target cells with vascular endothelial growth factor (VEGF), a major angiogenic factor produced by tumor cells, elicits a burst of reactive oxygen species (ROS) that enhances angiogenesis. However, the molecular mechanism coupling CD146 dimerization with the VEGF-related oxidant-generating apparatus has not been elucidated. Here, we show that CD146 dimerization is induced by VEGF and is significantly diminished by pretreatment with diphenylene iodonium, an inhibitor of NADPH oxidase, suggesting a potential role for NADPH oxidase (NOX) in VEGF-induced CD146 dimerization. Importantly, we found that overexpression of NADPH oxidase 4 (NOX4), which is the predominant NOX expressed in endothelial cells, significantly enhances VEGF-induced ROS generation and CD146 dimerization. By contrast, these VEGF effects were dramatically attenuated after transfection with siRNA to reduce NOX4 expression. Furthermore, expression of Rac1 N17, a dominant negative mutant of Rac1, a member of the Rho family of small GTPases, suppressed VEGF-induced ROS generation and CD146 dimerization. These studies show for the first time that VEGF alteration of CD146 dimerization is mediated via a NOX4-dependent pathway and provide novel insight into the significant role of NOX in redox regulation of the dimerization of cell adhesion molecules.
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Affiliation(s)
- Jie Zhuang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
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32
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Liao WX, Feng L, Zheng J, Chen DB. Deciphering mechanisms controlling placental artery endothelial cell migration stimulated by vascular endothelial growth factor. Endocrinology 2010; 151:3432-44. [PMID: 20463056 PMCID: PMC2903938 DOI: 10.1210/en.2009-1305] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Vascular endothelial growth factor (VEGF) stimulated fetoplacental artery endothelial (oFPAE) cell migration and activated multiple signaling pathways including ERK2/1, p38MAPK, Jun N-terminal kinase (JNK1/2), v-Akt murine thymoma viral oncogene homolog 1 (Akt1), and c-Src in oFPAE cells. VEGF-induced cell migration was blocked by specific kinase inhibitors of JNK1/2 (SP600125), c-Src (4-amino-5-(4-chlorophenyl)-7-(t-butyl)pyrazolo[3,4-d] pyrimidine), and phosphatidylinositol 3-kinase/Akt (wortmannin) but not ERK2/1 (U0126) and p38MAPK (SB203580). VEGF-induced cell migration was associated with dynamic actin reorganization and focal adhesion as evidenced by increased stress fiber formation and phosphorylation of cofilin-1 and focal adhesion kinase (FAK) and paxillin. Inhibition of JNK1/2, c-Src, and phosphatidylinositol 3-kinase/Akt suppressed VEGF-induced stress fiber formation and cofilin-1 phosphorylation. c-Src inhibition suppressed VEGF-induced phosphorylation of focal adhesion kinase, paxillin, and focal adhesion. VEGF-induced cell migration requires endogenous nitric oxide (NO) as: 1) VEGF-stimulated phosphorylation of endothelial NO synthase (eNOS) via activation of Akt, JNK1/2, and Src; 2) a NO donor diethylenetriamine-NO-stimulated cell migration; and 3) NO synthase inhibition blocked VEGF-induced cell migration. Targeted down-regulation and overexpression of caveolin-1 both inhibited VEGF-induced cell migration. Caveolin-1 down-regulation suppressed VEGF-stimulated phosphorylation of Akt, JNK, eNOS, c-Src, and FAK; however, basal activities of c-Src and FAK were elevated in parallel with increased stress fiber formation and focal adhesion. Caveolin-1 overexpression also inhibited VEGF-induced phosphorylation of Akt, JNK, c-Src, FAK, and eNOS. Thus, VEGF-induced placental endothelial cell migration requires activation of complex pathways that are paradoxically regulated by caveolin-1.
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Affiliation(s)
- Wu-xiang Liao
- Department of Obstetrics and Gynecology, University of California-Irvine, Orange, CA 92673, USA
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33
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How do cells make decisions: engineering micro- and nanoenvironments for cell migration. JOURNAL OF ONCOLOGY 2010; 2010:363106. [PMID: 20652046 PMCID: PMC2905916 DOI: 10.1155/2010/363106] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Accepted: 04/01/2010] [Indexed: 11/17/2022]
Abstract
Cell migration contributes to cancer metastasis and involves cell adhesion to the extracellular matrix (ECM), force generation through the cell's cytoskeletal, and finally cell detachment. Both adhesive cues from the ECM and soluble cues from neighbouring cells and tissue trigger intracellular signalling pathways that are essential for cell migration. While the machinery of many signalling pathways is relatively well understood, how hierarchies of different and conflicting signals are established is a new area of cellular cancer research. We examine the recent advances in microfabrication, microfluidics, and nanotechnology that can be utilized to engineer micro- and nanoscaled cellular environments. Controlling both adhesive and soluble cues for migration may allow us to decipher how cells become motile, choose the direction for migration, and how oncogenic transformations influences these decision-making processes.
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34
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Del Valle-Pérez B, Martínez VG, Lacasa-Salavert C, Figueras A, Shapiro SS, Takafuta T, Casanovas O, Capellà G, Ventura F, Viñals F. Filamin B plays a key role in vascular endothelial growth factor-induced endothelial cell motility through its interaction with Rac-1 and Vav-2. J Biol Chem 2010; 285:10748-60. [PMID: 20110358 DOI: 10.1074/jbc.m109.062984] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Actin-binding proteins filamin A (FLNA) and B (FLNB) are expressed in endothelial cells and play an essential role during vascular development. In order to investigate their role in adult endothelial cell function, we initially confirmed their expression pattern in different adult mouse tissues and cultured cell lines and found that FLNB expression is concentrated mainly in endothelial cells, whereas FLNA is more ubiquitously expressed. Functionally, small interfering RNA knockdown of endogenous FLNB in human umbilical vein endothelial cells inhibited vascular endothelial growth factor (VEGF)-induced in vitro angiogenesis by decreasing endothelial cell migration capacity, whereas FLNA ablation did not alter these parameters. Moreover, FLNB-depleted cells increased their substrate adhesion with more focal adhesions. The molecular mechanism underlying this effect implicates modulation of small GTP-binding protein Rac-1 localization and activity, with altered activation of its downstream effectors p21 protein Cdc42/Rac-activated kinase (PAK)-4/5/6 and its activating guanine nucleotide exchange factor Vav-2. Moreover, our results suggest the existence of a signaling complex, including FLNB, Rac-1, and Vav-2, under basal conditions that would further interact with VEGFR2 and integrin alphavbeta5 after VEGF stimulation. In conclusion, our results reveal a crucial role for FLNB in endothelial cell migration and in the angiogenic process in adult endothelial cells.
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Affiliation(s)
- Beatriz Del Valle-Pérez
- From the Unitat de Bioquímica i Biologia Molecular, Departament de Ciències Fisiològiques II, Universitat de Barcelona-IDIBELL, E-08907 Barcelona, Spain
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35
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Im E, Choi YJ, Kim CH, Fiocchi C, Pothoulakis C, Rhee SH. The angiogenic effect of probiotic Bacillus polyfermenticus on human intestinal microvascular endothelial cells is mediated by IL-8. Am J Physiol Gastrointest Liver Physiol 2009; 297:G999-G1008. [PMID: 20501448 PMCID: PMC2777460 DOI: 10.1152/ajpgi.00204.2009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Angiogenesis is required for wound healing and repair, but dysregulated angiogenesis is involved in gastrointestinal inflammation. Bacillus polyfermenticus (B.P.) is a probiotic bacterium clinically used for a variety of intestinal disorders in East Asia. Here we investigated the effect of B.P. on angiogenesis of human intestinal microvascular endothelial cells (HIMECs) and wound healing in intestinal mucosa. Exposure of HIMECs to the conditioned medium of B.P. cultures (B.P. CM) increased cell migration, permeability, and tube formation. Production of the proangiogenic cytokine IL-8 was increased by B.P. CM, and neutralizing antibodies against IL-8 or IL-8 receptor CXCR2 reduced tube formation as well as actin stress fiber formation. B.P. CM also increased NF-kappaB activation, and inhibitors of NF-kappaB suppressed B.P. CM-induced tube formation and IL-8 production. Furthermore, B.P. facilitated recovery of mice from colitis as shown by increased body weight and reduced rectal bleeding and histological severity. B.P. also increased angiogenesis and mouse IL-8 production in the mucosal layer. Collectively, these results show that B.P. increases angiogenesis of HIMECs in a NF-kappaB/IL-8/CXCR2-dependent manner. Moreover, B.P. promotes angiogenesis in the mucosa during recovery of mice from colitis, suggesting that this probiotic may be clinically used to facilitate intestinal wound healing.
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Affiliation(s)
- Eunok Im
- Inflammatory Bowel Disease Center, Division of Digestive Diseases, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California, USA.
| | - Yoon Jeong Choi
- 1Inflammatory Bowel Disease Center, Division of Digestive Diseases, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California; and
| | - Cho Hee Kim
- 1Inflammatory Bowel Disease Center, Division of Digestive Diseases, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California; and
| | - Claudio Fiocchi
- 2The Cleveland Clinic Foundation, Lerner Research Institute, Cleveland, Ohio
| | - Charalabos Pothoulakis
- 1Inflammatory Bowel Disease Center, Division of Digestive Diseases, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California; and
| | - Sang Hoon Rhee
- 1Inflammatory Bowel Disease Center, Division of Digestive Diseases, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California; and
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36
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Effect of ovarian steroids on gene expression profile in human uterine microvascular endothelial cells. Fertil Steril 2009; 92:709-21. [DOI: 10.1016/j.fertnstert.2008.06.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 04/07/2008] [Accepted: 06/09/2008] [Indexed: 12/11/2022]
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37
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Jorge I, Navarro P, Martínez-Acedo P, Núñez E, Serrano H, Alfranca A, Redondo JM, Vázquez J. Statistical model to analyze quantitative proteomics data obtained by 18O/16O labeling and linear ion trap mass spectrometry: application to the study of vascular endothelial growth factor-induced angiogenesis in endothelial cells. Mol Cell Proteomics 2009; 8:1130-49. [PMID: 19181660 PMCID: PMC2689778 DOI: 10.1074/mcp.m800260-mcp200] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2008] [Revised: 01/14/2009] [Indexed: 01/25/2023] Open
Abstract
Statistical models for the analysis of protein expression changes by stable isotope labeling are still poorly developed, particularly for data obtained by 16O/18O labeling. Besides large scale test experiments to validate the null hypothesis are lacking. Although the study of mechanisms underlying biological actions promoted by vascular endothelial growth factor (VEGF) on endothelial cells is of considerable interest, quantitative proteomics studies on this subject are scarce and have been performed after exposing cells to the factor for long periods of time. In this work we present the largest quantitative proteomics study to date on the short term effects of VEGF on human umbilical vein endothelial cells by 18O/16O labeling. Current statistical models based on normality and variance homogeneity were found unsuitable to describe the null hypothesis in a large scale test experiment performed on these cells, producing false expression changes. A random effects model was developed including four different sources of variance at the spectrum-fitting, scan, peptide, and protein levels. With the new model the number of outliers at scan and peptide levels was negligible in three large scale experiments, and only one false protein expression change was observed in the test experiment among more than 1000 proteins. The new model allowed the detection of significant protein expression changes upon VEGF stimulation for 4 and 8 h. The consistency of the changes observed at 4 h was confirmed by a replica at a smaller scale and further validated by Western blot analysis of some proteins. Most of the observed changes have not been described previously and are consistent with a pattern of protein expression that dynamically changes over time following the evolution of the angiogenic response. With this statistical model the 18O labeling approach emerges as a very promising and robust alternative to perform quantitative proteomics studies at a depth of several thousand proteins.
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Affiliation(s)
- Inmaculada Jorge
- Centro de Biología Molecular Severo Ochoa, E-28049 Madrid, Spain and ||Centro Nacional de Investigaciones Cardiovasculares, E-28029 Madrid, Spain
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Sela U, Brill A, Kalchenko V, Dashevsky O, Hershkoviz R. Allicin inhibits blood vessel growth and downregulates Akt phosphorylation and actin polymerization. Nutr Cancer 2008; 60:412-20. [PMID: 18444176 DOI: 10.1080/01635580701733083] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Uri Sela
- Assaf-Harofeh Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Israel.
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Katanasaka Y, Asai T, Naitou H, Ohashi N, Oku N. Proteomic characterization of angiogenic endothelial cells stimulated with cancer cell-conditioned medium. Biol Pharm Bull 2008; 30:2300-7. [PMID: 18057716 DOI: 10.1248/bpb.30.2300] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To characterize the protein expression profiles and identify the molecules associated with tumor angiogenesis, the cellular proteins of human umbilical vein endothelial cells (HUVECs) in response to cancer cell-conditioned medium (CM) prepared from HT1080 human fibrosarcoma cells were analyzed using fluorescence-labeled 2D gel-based proteomics. Most differentially expressed proteins in HT1080-CM-stimulated cells were found to be downregulated (88%) rather than upregulated (12%) based on statistical analysis of protein spot signals. Additionally, we examined the effects of vascular endothelial cell growth factor (VEGF), a proangiogenic factor, on cellular protein expression. In contrast, most differentially expressed proteins were found to be upregulated (59%) rather than downregulated (41%) in VEGF-stimulated HUVECs. Comparative analyses of 29 and 35 protein species identified in CM-stimulated and VEGF-stimulated HUVECs, respectively, revealed the remarkable differences between these two stimulations. Only four proteins were differentially expressed by both treatments: annexin A2, enolase 1, and T-plastin (downregulated by CM but upregulated by VEGF), and RAN (downregulated by both CM and VEGF). These findings provide new information regarding the regulation of protein expression associated with tumor angiogenesis.
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Affiliation(s)
- Yasufumi Katanasaka
- Department of Medical Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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Hashiramoto A, Sakai C, Yoshida K, Tsumiyama K, Miura Y, Shiozawa K, Nose M, Komai K, Shiozawa S. Angiopoietin 1 directly induces destruction of the rheumatoid joint by cooperative, but independent, signaling via ERK/MAPK and phosphatidylinositol 3-kinase/Akt. ACTA ACUST UNITED AC 2007; 56:2170-9. [PMID: 17599743 DOI: 10.1002/art.22727] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To determine whether angiopoietin 1 (Ang-1) potentiates overgrowth of the synovium and joint degradation in rheumatoid arthritis (RA), and to clarify the cell-signaling mechanisms of Ang-1 in the rheumatoid joint. METHODS Expression of Ang-1, TIE-2 (a receptor for Ang-1), and matrix metalloproteinase 3 (MMP-3) was studied by immunohistochemistry. Activation of the ERK/MAPK and phosphatidylinositol (PI) 3-kinase/Akt pathways and of NF-kappaB was determined by Western blotting and an NF-kappaB p65 DNA binding activity assay, respectively. Induction of apoptosis was evaluated by nuclear staining, cell viability assay, and Western blotting of caspases. Synovial cell migration was evaluated by actin polymerization, Western blotting of Rho family proteins, and affinity purification with Rhotekin-Rho and p21-activated kinase 1. Matrix degradation was examined by induction of proMMP-3 secretion from synovial cells followed by in vitro cartilaginous matrix degradation assay. RESULTS Ang-1 stimulated the ERK/MAPK and PI 3-kinase/Akt pathways in a cooperative but independent manner, which enhanced rheumatoid synovium overgrowth and joint destruction. In addition, Ang-1 activated NF-kappaB via Akt to promote cell growth, but also inhibited cell apoptosis via ERK and Akt. Ang-1 directly potentiated the extension of synovial cells in an ERK- and Akt-dependent manner by up-regulating Rho family proteins, which attenuated Rac signaling and led to membrane ruffling. Ang-1 induced proMMP-3 secretion from synovial cells, which resulted in direct degradation of the cartilaginous matrix. CONCLUSION Ang-1 stimulates the ERK/MAPK and PI 3-kinase/Akt pathways cooperatively, but in a manner independent of each other, to directly potentiate synovium overgrowth and joint destruction in RA. In addition to inflammatory cytokines, Ang-1/TIE-2 signaling appears to be an independent factor that contributes to the destruction of the rheumatoid joint.
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Affiliation(s)
- Akira Hashiramoto
- Kobe University FHS School of Medicine, Kobe University Hospital, Sumaku, Kobe, Japan
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Abstract
Endothelial cell migration is essential to angiogenesis. This motile process is directionally regulated by chemotactic, haptotactic, and mechanotactic stimuli and further involves degradation of the extracellular matrix to enable progression of the migrating cells. It requires the activation of several signaling pathways that converge on cytoskeletal remodeling. Then, it follows a series of events in which the endothelial cells extend, contract, and throw their rear toward the front and progress forward. The aim of this review is to give an integrative view of the signaling mechanisms that govern endothelial cell migration in the context of angiogenesis.
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Affiliation(s)
- Laurent Lamalice
- Le Centre de recherche en cancérologie, l'Université Laval, L'Hôtel-Dieu de Québec, Québec, Canada
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42
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Ono S. Mechanism of depolymerization and severing of actin filaments and its significance in cytoskeletal dynamics. INTERNATIONAL REVIEW OF CYTOLOGY 2007; 258:1-82. [PMID: 17338919 DOI: 10.1016/s0074-7696(07)58001-0] [Citation(s) in RCA: 212] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The actin cytoskeleton is one of the major structural components of the cell. It often undergoes rapid reorganization and plays crucial roles in a number of dynamic cellular processes, including cell migration, cytokinesis, membrane trafficking, and morphogenesis. Actin monomers are polymerized into filaments under physiological conditions, but spontaneous depolymerization is too slow to maintain the fast actin filament dynamics observed in vivo. Gelsolin, actin-depolymerizing factor (ADF)/cofilin, and several other actin-severing/depolymerizing proteins can enhance disassembly of actin filaments and promote reorganization of the actin cytoskeleton. This review presents advances as well as a historical overview of studies on the biochemical activities and cellular functions of actin-severing/depolymerizing proteins.
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Affiliation(s)
- Shoichiro Ono
- Department of Pathology, Emory University, Atlanta, GA 30322, USA
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Hanajima-Ozawa M, Matsuzawa T, Fukui A, Kamitani S, Ohnishi H, Abe A, Horiguchi Y, Miyake M. Enteropathogenic Escherichia coli, Shigella flexneri, and Listeria monocytogenes recruit a junctional protein, zonula occludens-1, to actin tails and pedestals. Infect Immun 2006; 75:565-73. [PMID: 17118974 PMCID: PMC1828484 DOI: 10.1128/iai.01479-06] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Enteropathogenic Escherichia coli, Shigella flexneri, and Listeria monocytogenes induce localized actin polymerization at the cytoplasmic face of the plasma membrane or within the host cytoplasm, creating unique actin-rich structures termed pedestals or actin tails. The process is known to be mediated by the actin-related protein 2 and 3 (Arp2/3) complex, which in these cases acts downstream of neural Wiskott-Aldrich syndrome protein (N-WASP) or of a listerial functional homolog of WASP family proteins. Here, we show that zonula occludens-1 (ZO-1), a protein in the tight junctions of polarized epithelial cells, is recruited to actin tails and pedestals. Immunocytochemical analysis revealed that ZO-1 was stained most in the distal part of the actin-rich structures, and the incorporation was mediated by the proline-rich region of the ZO-1 molecule. The direct clustering of membrane-targeted Nck, which is known to activate the N-WASP-Arp2/3 pathway, triggered the formation of the ZO-1-associated actin tails. The results suggest that the activation of the Arp2/3 complex downstream of N-WASP or a WASP-related molecule is a key to the formation of the particular actin-rich structures that bind with ZO-1. We propose that an analysis of the recruitment on a molecular basis will lead to an understanding of how ZO-1 recognizes a distinctive actin-rich structure under pathophysiological conditions.
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Affiliation(s)
- Miyuki Hanajima-Ozawa
- Department of Molecular Bacteriology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita-city, Osaka 565-0871, Japan
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Ioannidou S, Deinhardt K, Miotla J, Bradley J, Cheung E, Samuelsson S, Ng YS, Shima DT. An in vitro assay reveals a role for the diaphragm protein PV-1 in endothelial fenestra morphogenesis. Proc Natl Acad Sci U S A 2006; 103:16770-5. [PMID: 17075074 PMCID: PMC1636530 DOI: 10.1073/pnas.0603501103] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Fenestrae are small pores in the endothelium of renal glomerular, gastrointestinal, and endocrine gland capillaries and are involved in the bidirectional exchange of molecules between blood and tissues. Although decades of studies have characterized fenestrae at the ultrastructural level, little is known on the mechanisms by which fenestrae form. We present the development of an in vitro assay in which rapid and abundant fenestra induction enables a detailed study of their biogenesis. Through the use of agents that stabilize or disassemble actin microfilaments, we show that actin microfilament remodeling is part of fenestra biogenesis in this model. Furthermore, by using a loss-of-function approach, we show that the diaphragm protein PV-1 is necessary for fenestral pore architecture and the ordered arrangement of fenestrae in sieve plates. Together, these data provide insight into the cell biology of fenestra formation and open up the future study of the fenestra to a combined morphological and biochemical analysis.
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Affiliation(s)
- Sofia Ioannidou
- *Eyetech Research Center, OSI Eyetech, 35 Hartwell Avenue, Lexington, MA 02420; and
- Endothelial Cell Biology Laboratory, Cancer Research UK, 44 Lincoln's Inn Fields, London WC2A 3PX, United Kingdom
| | - Katrin Deinhardt
- Endothelial Cell Biology Laboratory, Cancer Research UK, 44 Lincoln's Inn Fields, London WC2A 3PX, United Kingdom
| | - Jadwiga Miotla
- Endothelial Cell Biology Laboratory, Cancer Research UK, 44 Lincoln's Inn Fields, London WC2A 3PX, United Kingdom
| | - John Bradley
- *Eyetech Research Center, OSI Eyetech, 35 Hartwell Avenue, Lexington, MA 02420; and
| | - Eunice Cheung
- *Eyetech Research Center, OSI Eyetech, 35 Hartwell Avenue, Lexington, MA 02420; and
| | - Steven Samuelsson
- *Eyetech Research Center, OSI Eyetech, 35 Hartwell Avenue, Lexington, MA 02420; and
| | - Yin-Shan Ng
- *Eyetech Research Center, OSI Eyetech, 35 Hartwell Avenue, Lexington, MA 02420; and
| | - David T. Shima
- *Eyetech Research Center, OSI Eyetech, 35 Hartwell Avenue, Lexington, MA 02420; and
- Endothelial Cell Biology Laboratory, Cancer Research UK, 44 Lincoln's Inn Fields, London WC2A 3PX, United Kingdom
- To whom correspondence should be addressed. E-mail:
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Zeng G, Taylor SM, McColm JR, Kappas NC, Kearney JB, Williams LH, Hartnett ME, Bautch VL. Orientation of endothelial cell division is regulated by VEGF signaling during blood vessel formation. Blood 2006; 109:1345-52. [PMID: 17068148 PMCID: PMC1794069 DOI: 10.1182/blood-2006-07-037952] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
New blood vessel formation requires the coordination of endothelial cell division and the morphogenetic movements of vessel expansion, but it is not known how this integration occurs. Here, we show that endothelial cells regulate division orientation during the earliest stages of blood vessel formation, in response to morphogenetic cues. In embryonic stem (ES) cell-derived vessels that do not experience flow, the plane of endothelial cytokinesis was oriented perpendicular to the vessel long axis. We also demonstrated regulated cleavage orientation in vivo, in flow-exposed forming retinal vessels. Daughter nuclei moved away from the cleavage plane after division, suggesting that regulation of endothelial division orientation effectively extends vessel length in these developing vascular beds. A gain-of-function mutation in VEGF signaling increased randomization of endothelial division orientation, and this effect was rescued by a transgene, indicating that regulation of division orientation is a novel mechanism whereby VEGF signaling affects vessel morphogenesis. Thus, our findings show that endothelial cell division and morphogenesis are integrated in developing vessels by flow-independent mechanisms that involve VEGF signaling, and this cross talk is likely to be critical to proper vessel morphogenesis.
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Affiliation(s)
- Gefei Zeng
- Department of Biology, University of North Carolina at Chapel Hill 27599, USA
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Panorchan P, Lee JSH, Kole TP, Tseng Y, Wirtz D. Microrheology and ROCK signaling of human endothelial cells embedded in a 3D matrix. Biophys J 2006; 91:3499-507. [PMID: 16891369 PMCID: PMC1614481 DOI: 10.1529/biophysj.106.084988] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Cell function is profoundly affected by the geometry of the extracellular environment confining the cell. Whether and how cells plated on a two-dimensional matrix or embedded in a three-dimensional (3D) matrix mechanically sense the dimensionality of their environment is mostly unknown, partly because individual cells in an extended matrix are inaccessible to conventional cell-mechanics probes. Here we develop a functional assay based on multiple particle tracking microrheology coupled with ballistic injection of nanoparticles to measure the local intracellular micromechanical properties of individual cells embedded inside a matrix. With our novel assay, we probe the mechanical properties of the cytoplasm of individual human umbilical vein endothelial cells (HUVECs) embedded in a 3D peptide hydrogel in the presence or absence of vascular endothelial growth factor (VEGF). We found that VEGF treatment, which enhances endothelial migration, increases the compliance and reduces the elasticity of the cytoplasm of HUVECs in a matrix. This VEGF-induced softening response of the cytoplasm is abrogated by specific Rho-kinase (ROCK) inhibition. These results establish combined particle-tracking microrheology and ballistic injection as the first method able to probe the micromechanical properties and mechanical response to agonists and/or drug treatments of individual cells inside a matrix. These results suggest that ROCK plays an essential role in the regulation of the intracellular mechanical response to VEGF of endothelial cells in a 3D matrix.
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Affiliation(s)
- Porntula Panorchan
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA
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Tamilarasan KP, Kolluru GK, Rajaram M, Indhumathy M, Saranya R, Chatterjee S. Thalidomide attenuates nitric oxide mediated angiogenesis by blocking migration of endothelial cells. BMC Cell Biol 2006; 7:17. [PMID: 16584574 PMCID: PMC1456963 DOI: 10.1186/1471-2121-7-17] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2005] [Accepted: 04/04/2006] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Thalidomide is an immunomodulatory agent, which arrests angiogenesis. The mechanism of anti-angiogenic activity of thalidomide is not fully understood. As nitric oxide is involved in angiogenesis, we speculate a cross-talk between thalidomide and nitric oxide signaling pathway to define angiogenesis. The aim of present study is to understand the mechanistic aspects of thalidomide-mediated attenuation of angiogenesis induced by nitric oxide at the cellular level. METHODS To study the cellular mechanism of thalidomide-mediated blocking of angiogenesis triggered by nitric oxide, we used two endothelial cell based models: 1) wound healing and 2) tube formation using ECV 304, an endothelial cell line. These cell-based models reflect pro-angiogenic events in vivo. We also studied the effects of thalidomide on nitric oxide mediated egg yolk angiogenesis. Thalidomide could block the formation of blood vessels both in absence and presence of nitric oxide. Thalidomide effects on migration of, and actin polymerization in, ECV 304 cells were studied at the single cell level using live cell imaging techniques and probes to detect nitric oxide. RESULTS Results demonstrate that thalidomide blocks nitric oxide-mediated angiogenesis in egg yolk model and also reduces the number of tubes formed in endothelial cell monolayers. We also observed that thalidomide arrests wound healing in presence and absence of nitric oxide in a dose-dependent fashion. Additionally, thalidomide promotes actin polymerization and antagonizes the formation of membrane extensions triggered by nitric oxide in endothelial cells. Experiments targeting single tube structure with thalidomide, followed by nitric oxide treatment, show that the tube structures are insensitive to thalidomide and nitric oxide. These observations suggest that thalidomide interferes with nitric oxide-induced migration of endothelial cells at the initial phase of angiogenesis before cells co-ordinate themselves to form organized tubes in endothelial cells and thereby inhibits angiogenesis. CONCLUSION Thalidomide exerts inhibitory effects on nitric oxide-mediated angiogenesis by altering sub-cellular actin polymerization pattern, which leads to inhibition of endothelial cell migration.
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Affiliation(s)
- KP Tamilarasan
- Vascular Biology Lab, AU-KBC Research Centre, Anna University, Chennai, India
| | | | - Megha Rajaram
- Vascular Biology Lab, AU-KBC Research Centre, Anna University, Chennai, India
| | - M Indhumathy
- Vascular Biology Lab, AU-KBC Research Centre, Anna University, Chennai, India
- Worked as summer students in June-July 2005. They are B.Tech students from the
Vivekanandhaa College of Engineering for Women, Tiruchengode, Namakkal, TN, India
| | - R Saranya
- Vascular Biology Lab, AU-KBC Research Centre, Anna University, Chennai, India
- Worked as summer students in June-July 2005. They are B.Tech students from the
Vivekanandhaa College of Engineering for Women, Tiruchengode, Namakkal, TN, India
| | - Suvro Chatterjee
- Vascular Biology Lab, AU-KBC Research Centre, Anna University, Chennai, India
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Mukherjee S, Tessema M, Wandinger-Ness A. Vesicular Trafficking of Tyrosine Kinase Receptors and Associated Proteins in the Regulation of Signaling and Vascular Function. Circ Res 2006; 98:743-56. [PMID: 16574915 DOI: 10.1161/01.res.0000214545.99387.e3] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Receptor tyrosine kinases (RTKs) play a pivotal role in the development and function of the cardiovascular system. Ligand-activated RTKs promote numerous downstream signal transduction pathways that lead to vascular permeability, as well as proliferation, migration, and differentiation of vascular endothelia and smooth muscle cells. Ligand binding also promotes internalization of the activated receptors either to downregulate the signaling via degradation of the ligand/receptor complex or to signal from endosomes. However, the outcomes of receptor internalization via clathrin-dependent or caveolar pathways and trafficking mechanisms are incompletely clarified in vascular systems. Activity modulation through endocytosis and vesicular trafficking significantly impacts downstream targets of RTKs such as endothelial nitric oxide synthase (eNOS) and VE-cadherin. RTKs and their associated targets are also transported to the nucleus, where they may directly impact nuclear signaling. Although the nuclear transport pathways are just beginning to be unraveled, it appears that endocytosis and vesicular trafficking are involved. In this review, we discuss the mechanisms by which activated RTKs and the downstream targets eNOS and VE-cadherin may be internalized and transported to various intracellular compartments. How localization and interacting proteins impact protein function and influence signaling is an important theme, as is the potential for modulating signaling through therapeutic targeting of activated receptors and components of the endocytic machinery.
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Affiliation(s)
- Sanchita Mukherjee
- Department of Pathology, University of New Mexico Health Sciences Center, Albuquerque, NM 87131-5301, USA
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Kobayashi M, Nishita M, Mishima T, Ohashi K, Mizuno K. MAPKAPK-2-mediated LIM-kinase activation is critical for VEGF-induced actin remodeling and cell migration. EMBO J 2006; 25:713-26. [PMID: 16456544 PMCID: PMC1383554 DOI: 10.1038/sj.emboj.7600973] [Citation(s) in RCA: 137] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2005] [Accepted: 01/09/2006] [Indexed: 01/02/2023] Open
Abstract
Vascular endothelial growth factor-A (VEGF-A) induces actin reorganization and migration of endothelial cells through a p38 mitogen-activated protein kinase (MAPK) pathway. LIM-kinase 1 (LIMK1) induces actin remodeling by phosphorylating and inactivating cofilin, an actin-depolymerizing factor. In this study, we demonstrate that activation of LIMK1 by MAPKAPK-2 (MK2; a downstream kinase of p38 MAPK) represents a novel signaling pathway in VEGF-A-induced cell migration. VEGF-A induced LIMK1 activation and cofilin phosphorylation, and this was inhibited by the p38 MAPK inhibitor SB203580. Although p38 phosphorylated LIMK1 at Ser-310, it failed to activate LIMK1 directly; however, MK2 activated LIMK1 by phosphorylation at Ser-323. Expression of a Ser-323-non-phosphorylatable mutant of LIMK1 suppressed VEGF-A-induced stress fiber formation and cell migration; however, expression of a Ser-323-phosphorylation-mimic mutant enhanced these processes. Knockdown of MK2 by siRNA suppressed VEGF-A-induced LIMK1 activation, stress fiber formation, and cell migration. Expression of kinase-dead LIMK1 suppressed VEGF-A-induced tubule formation. These findings suggest that MK2-mediated LIMK1 phosphorylation/activation plays an essential role in VEGF-A-induced actin reorganization, migration, and tubule formation of endothelial cells.
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Affiliation(s)
- Miho Kobayashi
- Department of Biomolecular Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Michiru Nishita
- Department of Biomolecular Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Toshiaki Mishima
- Department of Biomolecular Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Kazumasa Ohashi
- Department of Biomolecular Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Kensaku Mizuno
- Department of Biomolecular Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
- Department of Biomolecular Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi 980-8578, Japan. Tel.: +81 22 795 6676; Fax: +81 22 795 6678; E-mail:
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