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Fonódi M, Nagy L, Boratkó A. Role of Protein Phosphatases in Tumor Angiogenesis: Assessing PP1, PP2A, PP2B and PTPs Activity. Int J Mol Sci 2024; 25:6868. [PMID: 38999976 PMCID: PMC11241275 DOI: 10.3390/ijms25136868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/19/2024] [Accepted: 06/20/2024] [Indexed: 07/14/2024] Open
Abstract
Tumor angiogenesis, the formation of new blood vessels to support tumor growth and metastasis, is a complex process regulated by a multitude of signaling pathways. Dysregulation of signaling pathways involving protein kinases has been extensively studied, but the role of protein phosphatases in angiogenesis within the tumor microenvironment remains less explored. However, among angiogenic pathways, protein phosphatases play critical roles in modulating signaling cascades. This review provides a comprehensive overview of the involvement of protein phosphatases in tumor angiogenesis, highlighting their diverse functions and mechanisms of action. Protein phosphatases are key regulators of cellular signaling pathways by catalyzing the dephosphorylation of proteins, thereby modulating their activity and function. This review aims to assess the activity of the protein tyrosine phosphatases and serine/threonine phosphatases. These phosphatases exert their effects on angiogenic signaling pathways through various mechanisms, including direct dephosphorylation of angiogenic receptors and downstream signaling molecules. Moreover, protein phosphatases also crosstalk with other signaling pathways involved in angiogenesis, further emphasizing their significance in regulating tumor vascularization, including endothelial cell survival, sprouting, and vessel maturation. In conclusion, this review underscores the pivotal role of protein phosphatases in tumor angiogenesis and accentuate their potential as therapeutic targets for anti-angiogenic therapy in cancer.
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Affiliation(s)
| | | | - Anita Boratkó
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (M.F.); (L.N.)
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2
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Xiong QW, Jiang K, Shen XW, Ma ZR, Yan XM, Xia H, Cao X. The requirement of the mitochondrial protein NDUFS8 for angiogenesis. Cell Death Dis 2024; 15:253. [PMID: 38594244 PMCID: PMC11004167 DOI: 10.1038/s41419-024-06636-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/11/2024]
Abstract
Mitochondria are important for the activation of endothelial cells and the process of angiogenesis. NDUFS8 (NADH:ubiquinone oxidoreductase core subunit S8) is a protein that plays a critical role in the function of mitochondrial Complex I. We aimed to investigate the potential involvement of NDUFS8 in angiogenesis. In human umbilical vein endothelial cells (HUVECs) and other endothelial cell types, we employed viral shRNA to silence NDUFS8 or employed the CRISPR/Cas9 method to knockout (KO) it, resulting in impaired mitochondrial functions in the endothelial cells, causing reduction in mitochondrial oxygen consumption and Complex I activity, decreased ATP production, mitochondrial depolarization, increased oxidative stress and reactive oxygen species (ROS) production, and enhanced lipid oxidation. Significantly, NDUFS8 silencing or KO hindered cell proliferation, migration, and capillary tube formation in cultured endothelial cells. In addition, there was a moderate increase in apoptosis within NDUFS8-depleted endothelial cells. Conversely, ectopic overexpression of NDUFS8 demonstrated a pro-angiogenic impact, enhancing cell proliferation, migration, and capillary tube formation in HUVECs and other endothelial cells. NDUFS8 is pivotal for Akt-mTOR cascade activation in endothelial cells. Depleting NDUFS8 inhibited Akt-mTOR activation, reversible with exogenous ATP in HUVECs. Conversely, NDUFS8 overexpression boosted Akt-mTOR activation. Furthermore, the inhibitory effects of NDUFS8 knockdown on cell proliferation, migration, and capillary tube formation were rescued by Akt re-activation via a constitutively-active Akt1. In vivo experiments using an endothelial-specific NDUFS8 shRNA adeno-associated virus (AAV), administered via intravitreous injection, revealed that endothelial knockdown of NDUFS8 inhibited retinal angiogenesis. ATP reduction, oxidative stress, and enhanced lipid oxidation were detected in mouse retinal tissues with endothelial knockdown of NDUFS8. Lastly, we observed an increase in NDUFS8 expression in retinal proliferative membrane tissues obtained from human patients with proliferative diabetic retinopathy. Our findings underscore the essential role of the mitochondrial protein NDUFS8 in regulating endothelial cell activation and angiogenesis.
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Affiliation(s)
- Qian-Wei Xiong
- Department of Urology Surgery, Children's Hospital of Soochow University, Suzhou, China
| | - Kun Jiang
- Vascular Surgery Department, Kunshan Traditional Chinese Medicine Hospital, Kunshan, China
| | - Xiao-Wei Shen
- Department of General Surgery, QingPu Branch of Zhongshan Hospital Affiliated to Fudan University, QingPu District Central Hospital Shanghai, Shanghai, China
| | - Zhou-Rui Ma
- Department of Burns and Plastic Surgery, Children's Hospital of Soochow University, Suzhou, China
| | - Xiang-Ming Yan
- Department of Urology Surgery, Children's Hospital of Soochow University, Suzhou, China.
| | - Hao Xia
- Department of Pediatric Emergency and Critical Care Medicine, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Xu Cao
- Department of Urology Surgery, Children's Hospital of Soochow University, Suzhou, China.
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3
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Kiezun M, Dobrzyn K, Kiezun J, Kaminski T, Smolinska N. Chemerin affects the expression of angiogenesis-related factors in the porcine endometrium during early pregnancy and the oestrous cycle: an in vitro study. Reprod Fertil Dev 2023; 35:692-707. [PMID: 37955271 DOI: 10.1071/rd23148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 10/18/2023] [Indexed: 11/14/2023] Open
Abstract
CONTEXT The appropriate course of angiogenesis in the endometrium is crucial for pregnancy establishment and maintenance. Very little is known about the factors linking vessel formation and immune system functioning. AIMS We hypothesised that chemerin, an adipokine known for its involvement in the regulation of energy balance and immunological functions, may act as a potent regulator of endometrial angiogenesis during early pregnancy in pigs. METHODS Porcine endometrial tissue explants were obtained from pregnant pigs on days 10-11, 12-13, 15-16 and 27-28, and on days 10-12 of the oestrous cycle. The explants were in vitro cultured for 24h in the presence of chemerin (100, 200ng/mL) or in medium alone (control). We evaluated the in vitro effect of chemerin on the secretion of vascular endothelial growth factors A-D (VEGF-A-D), placental growth factor (PlGF), basic fibroblast growth factor (bFGF) and angiopoietin 1 and 2 (ANG-1, ANG-2) with the ELISA method. The protein abundance of angiogenesis-related factor receptors, VEGF receptors 1-3 (VEGFR1-3), FGF receptors 1 and 2 (FGFR1-2) and ANG receptor (TIE2) was evaluated with the Western blot (WB) method. We also analysed the influence of chemerin on the phosphorylation of AMPK using WB. KEY RESULTS We found that in the studied endometrial samples, chemerin up-regulated the secretion of VEGF-A, VEGF-B and PlGF, and protein expression of VEGFR3. The adipokine caused a decrease in VEGF-C, VEGF-D and ANG-1 release. Chemerin effect on bFGF and ANG-2 secretion, and protein content of VEGFR1, VEGFR2, FGFR1, FGFR2 and TIE2 were dependent on the stage of pregnancy. Chemerin was found to down-regulate AMPK phosphorylation. CONCLUSIONS The obtained in vitro results suggest that chemerin could be an important factor in the early pregnant uterus by its influence on angiogenic factors' secretion and signalling. IMPLICATIONS The obtained results on the role of chemerin in the process of endometrial angiogenesis may, in the long term perspective, contribute to the elaboration of more effective methods of modifying reproductive processes and maintaining energy homeostasis in farm animals.
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Affiliation(s)
- Marta Kiezun
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, Olsztyn 10-719, Poland
| | - Kamil Dobrzyn
- Department of Zoology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego Street 5, Olsztyn 10-719, Poland
| | - Jacek Kiezun
- Department of Human Histology and Embryology, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Warszawska St. 30, Olsztyn 10-082, Poland
| | - Tadeusz Kaminski
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, Olsztyn 10-719, Poland
| | - Nina Smolinska
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, Olsztyn 10-719, Poland
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4
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Balal S, Din N, Ashton C, Ahmad S. Healing of Chemical Injury-Related Persistent Corneal Epithelial Defects With Topical Insulin. Cornea 2023; 42:1000-1004. [PMID: 36729695 DOI: 10.1097/ico.0000000000003145] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/01/2022] [Indexed: 02/03/2023]
Abstract
PURPOSE The purpose of this study was to evaluate the effectiveness of insulin eye drops for treating refractory persistent epithelial defects (PEDs). METHODS A prospective, single-center, case series was performed from March 2020 to September 2021. All patients were prescribed insulin eye drops for refractory PEDs that failed on maximum standard medical treatment (including serum eye drops). The drops were used 4 times/day. Patients were followed up at 2 weekly intervals with full slitlamp examination and serial anterior segment photography. The primary end point was resolution of the epithelial defect. RESULTS Eleven eyes of 10 patients were treated with insulin eye drops. The mean age of the cohort was 45.4 + 25 years with a mean follow-up of 195.7 + 114.3 days after re-epithelization. The most common causative condition was chemical injury (n = 5, 60%). Mean baseline PED defect was 41.3 + 55.2 mm 2 . Nine of 11 eyes (82%) fully re-epithelized within a mean time of 62.3 + 34.6 days (range 14-112). In 2 patients who did not achieve re-epithelization, one had a reduction in size from 12.25 mm 2 to 4.5 mm 2 and the other had no response. No recurrence in defect was observed in the group that had fully re-epithelized. CONCLUSIONS This study showed that the use of topical insulin eye drops led to a successful resolution of PED in 9 of 11 cases. We demonstrate the use of insulin for closure of PEDs in chemical eye injury. Larger controlled studies are required to further evaluate this novel therapy.
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Affiliation(s)
- Shafi Balal
- Moorfields Eye Hospital, London, United Kingdom; and
- UCL Institute of Ophthalmology, London, United Kingdom
| | - Nizar Din
- Moorfields Eye Hospital, London, United Kingdom; and
| | | | - Sajjad Ahmad
- Moorfields Eye Hospital, London, United Kingdom; and
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5
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Kabra S, Thosar NR, Malviya NS. Exploring the Synergistic Effect of Simvastatin in Oral Health Applications: A Literature Review. Cureus 2023; 15:e44411. [PMID: 37791218 PMCID: PMC10543113 DOI: 10.7759/cureus.44411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 08/30/2023] [Indexed: 10/05/2023] Open
Abstract
Statins are the first line of treatment for hyperlipidaemia. Along with lowering lipids, it also lowers mortality and cardiovascular risk. Statins play a major role in maintaining the homeostasis of the oral cavity via a number of different mechanisms. It includes regeneration of dentin and pulp by differentiation and increased development of mineralized tissue via the bone morphogenetic proteins (BMP)-2 Pathway. It shows effective bone health by leading to osteogenic differentiation mesenchymal stem cells, by facilitating epithelization process in wound healing, anti-inflammatory, antioxidant, antimicrobial, antiviral, and fungicidal properties. To the finest of the information we have, there have been very few comprehensive studies that have investigated the effects of statin drugs on various aspects of dental and oral health. As a result, the main objective of this review was to examine the effect of statins on oral health applications. According to the findings of our extensive review, statins have noteworthy and promising effects on several aspects of oral health, including dental pulp cells, chronic periodontitis, alveolar bone loss, orthodontic tooth movement, and so on. Nevertheless, it is concluded that local or even systemic administration of simvastatin should be regarded as an innovative, easily accessible, and safe therapeutic agent that has a significant impact on enhancing the oral health.
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Affiliation(s)
- Sakshi Kabra
- Pediatric and Preventive Dentistry, Sharard Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research (Deemed to be University), Wardha, IND
| | - Nilima R Thosar
- Pediatric and Preventive Dentistry, Sharard Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research (Deemed to be University), Wardha, IND
| | - Nishi S Malviya
- Pediatric and Preventive Dentistry, Sharard Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research (Deemed to be University), Wardha, IND
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6
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Rutland CD, Bean GR, Charville GW. Contemporary diagnostic approach to atypical vascular lesion and angiosarcoma. Semin Diagn Pathol 2023:S0740-2570(23)00045-X. [PMID: 37121782 DOI: 10.1053/j.semdp.2023.04.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 04/24/2023] [Indexed: 05/02/2023]
Abstract
Vascular neoplasms account for a substantial fraction of cutaneous mesenchymal tumors, spanning from clinically indolent benign lesions to highly aggressive malignancies. These neoplasms present a distinctive challenge in terms of their diagnostic histopathology, both because of the breadth of their morphological manifestations and because of the significant histological overlap between different entities, even benign and malignant ones. The post-radiotherapy setting is particularly problematic diagnostically, insofar as radiation exposure predisposes not only to secondary angiosarcoma, but also to atypical vascular lesion, a largely benign proliferation of cutaneous blood vessels typically affecting the breast. To address these challenges, we explore the clinical, histological, and molecular features of malignant vascular neoplasia, including primary and secondary subtypes, through the comparative lens of atypical vascular lesion. In addition to highlighting the key morphological indicators of malignancy in superficial vasoformative tumors, we offer an approach that integrates clinical characteristics and molecular genetic profiling to facilitate accurate classification. With this current knowledge as our foundation, we also look ahead in an effort to frame some of the key unanswered questions regarding superficial vascular malignancies and their natural history, clinical management, and molecular underpinnings.
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Affiliation(s)
- Cooper D Rutland
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Gregory R Bean
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA.
| | - Gregory W Charville
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA.
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7
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Zhu YX, Li Y, Ma Y, Zhang X, Du X, Gao J, Ding NH, Wang L, Chen N, Luo M, Wu J, Li R. Liraglutide Accelerates Ischemia-Induced Angiogenesis in a Murine Diabetic Model. J Am Heart Assoc 2023; 12:e026586. [PMID: 36789853 PMCID: PMC10111486 DOI: 10.1161/jaha.122.026586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Background Severe hindlimb ischemia is a chronic disease with poor prognosis that can lead to amputation or even death. This study aimed to assess the therapeutic effect of liraglutide on hind-limb ischemia in type 2 diabetic mice and to elucidate the underlying mechanism. Methods and Results Blood flow reperfusion and capillary densities after treatment with liraglutide or vehicle were evaluated in a mouse model of lower-limb ischemia in a normal background or a background of streptozotocin-induced diabetes. The proliferation, migration, and tube formation of human umbilical vein endothelial cells were analyzed in vitro upon treatment with liraglutide under normal-glucose and high-glucose conditions. Levels of phospho-Akt, phospho-endothelial nitric oxide synthase, and phospho-extracellular signal-related kinases 1 and 2 under different conditions in human umbilical vein endothelial cells and in ischemic muscle were determined by western blotting. Liraglutide significantly improved perfusion recovery and capillary density in both nondiabetic and diabetic mice. Liraglutide also promoted, in a concentration-dependent manner, the proliferation, migration, and tube formation of normal glucose- and high glucose-treated human umbilical vein endothelial cells, as well as the phosphorylation of Akt, endothelial nitric oxide synthase, and extracellular signal-related kinases 1 and 2 both in vitro and in vivo. The liraglutide antagonist exendin (9-39) reversed the promoting effects of liraglutide on human umbilical vein endothelial cell functions. Furthermore, exendin (9-39), LY294002, and PD98059 blocked the liraglutide-induced activation of Akt/endothelial nitric oxide synthase and extracellular signal-related kinases 1 and 2 signaling pathways. Conclusions These studies identified a novel role of liraglutide in modulating ischemia-induced angiogenesis, possibly through effects on endothelial cell function and activation of Akt/endothelial nitric oxide synthase and extracellular signal-related kinases 1 and 2 signaling, and suggested the glucagon-like peptide-1 receptor may be an important therapeutic target in diabetic hind-limb ischemia.
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Affiliation(s)
- Yu-Xin Zhu
- Drug Discovery Research Center Southwest Medical University Luzhou Sichuan China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy Southwest Medical University Luzhou Sichuan China.,Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China
| | - Yi Li
- Department of Endocrinology The Affiliated Hospital of Southwest Medical University, Southwest Medical University Luzhou Sichuan China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy Southwest Medical University Luzhou Sichuan China.,Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China
| | - Yu Ma
- Drug Discovery Research Center Southwest Medical University Luzhou Sichuan China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy Southwest Medical University Luzhou Sichuan China.,Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China
| | - Xiao Zhang
- School of Basic Medicine Southwest Medical University Luzhou Sichuan China
| | - Xingrong Du
- Drug Discovery Research Center Southwest Medical University Luzhou Sichuan China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy Southwest Medical University Luzhou Sichuan China.,Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China
| | - Jiali Gao
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China.,Nucleic Acid Medicine of Luzhou Key Laboratory Southwest Medical University Luzhou Sichuan China
| | - Nian Hui Ding
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China.,Nucleic Acid Medicine of Luzhou Key Laboratory Southwest Medical University Luzhou Sichuan China
| | - Liqun Wang
- Drug Discovery Research Center Southwest Medical University Luzhou Sichuan China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy Southwest Medical University Luzhou Sichuan China.,Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China
| | - Ni Chen
- Drug Discovery Research Center Southwest Medical University Luzhou Sichuan China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy Southwest Medical University Luzhou Sichuan China.,Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China
| | - Mao Luo
- Drug Discovery Research Center Southwest Medical University Luzhou Sichuan China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy Southwest Medical University Luzhou Sichuan China.,Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China
| | - Jianbo Wu
- Drug Discovery Research Center Southwest Medical University Luzhou Sichuan China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy Southwest Medical University Luzhou Sichuan China.,Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China
| | - Rong Li
- Drug Discovery Research Center Southwest Medical University Luzhou Sichuan China.,Laboratory for Cardiovascular Pharmacology, Department of Pharmacology, School of Pharmacy Southwest Medical University Luzhou Sichuan China.,Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province Institute of Cardiovascular Research, Southwest Medical University Luzhou Sichuan China.,Nucleic Acid Medicine of Luzhou Key Laboratory Southwest Medical University Luzhou Sichuan China
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8
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Kung ML, Huang ST, Tsai KW, Chu TH, Hsieh S. Nanosized zingerone-triggered anti-angiogenesis contributes to tumor suppression in human hepatocellular carcinoma. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Yao J, Wu XY, Yu Q, Yang SF, Yuan J, Zhang ZQ, Xue JS, Jiang Q, Chen MB, Xue GH, Cao C. The requirement of phosphoenolpyruvate carboxykinase 1 for angiogenesis in vitro and in vivo. SCIENCE ADVANCES 2022; 8:eabn6928. [PMID: 35622925 PMCID: PMC9140980 DOI: 10.1126/sciadv.abn6928] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 04/12/2022] [Indexed: 05/23/2023]
Abstract
We here examined the potential biological function of phosphoenolpyruvate carboxykinase 1 (PCK1) in angiogenesis. shRNA- or CRISPR-Cas9-induced PCK1 depletion potently inhibited endothelial cell proliferation, migration, sprouting, and tube formation, whereas ectopic PCK1 overexpression exerted opposite activity. In HUVECs, Gαi3 expression and Akt activation were decreased following PCK1 depletion, but were augmented by ectopic PCK1 overexpression. In vivo, retinal expression of PCK1 gradually increased from postnatal day 1 (P1) to P5. The intravitreous injection of endothelial-specific PCK1 shRNA adenovirus at P1 potently inhibited the radial extension of vascular plexus at P5. Conditional endothelial knockdown of PCK1 in adult mouse retina increased vascular leakage and the number of acellular capillaries while decreasing the number of RGCs in murine retinas. In diabetic retinopathy patients, PCK1 mRNA and protein levels were up-regulated in retinal tissues. Together, PCK1 is essential for angiogenesis possibly by mediating Gαi3 expression and Akt activation.
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Affiliation(s)
- Jin Yao
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China
| | - Xin-yuan Wu
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China
| | - Qing Yu
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China
| | - Shuo-fei Yang
- Department of Vascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jin Yuan
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China
| | - Zhi-qing Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Jin-song Xue
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China
| | - Qin Jiang
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China
| | - Min-bin Chen
- Department of Radiotherapy and Oncology, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, China
| | - Guan-hua Xue
- Department of Vascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Cong Cao
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
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10
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Li J, Zhang J, Hao Q, Chen H, Cheng X. Erythropoietin for preventing bronchopulmonary dysplasia in preterm infants: A systematic review and meta-analysis. Pediatr Pulmonol 2022; 57:1051-1063. [PMID: 35043596 DOI: 10.1002/ppul.25837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 01/15/2022] [Accepted: 01/17/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Recombinant erythropoietin (rEPO) has erythropoiesis and anti-inflammatory properties that might help reduce lung injury in preterm infants. OBJECTIVE To conduct a systematic review and meta-analysis to evaluate the possible role of rEPO in altering the risk of bronchopulmonary dysplasia (BPD). METHODS PubMed, EMBASE, Web of Science, and the Cochrane Library databases were searched to identify randomized controlled trials (RCTs) that evaluated the effects of rEPO for the prevention of BPD in preterm infants. RESULTS Fourteen studies (3199 infants) were included. Our results could not demonstrate a significant effect of rEPO on the incidence of BPD36 (risk ratio [RR]: 0.97, 95% confidence interval [CI]: 0.87-1.09, p = 0.63, I2 = 0, 12 RCTs, high-quality evidence), BPD28 (RR: 1.28, 95% CI: 0.91-1.79, p = 0.15, I2 = 17%, three RCTs, low-quality evidence) and oxygen dependence days. The test for subgroup analysis by administration route of rEPO showed similar outcomes above. Some of the included trials reported a significant effect of intravenous rEPO on reduction of sepsis (RR: 0.82, 95% CI: 0.70-0.96, p = 0.01, I2 = 0, high-quality evidence) and any stage necrotizing enterocolitis (NEC) (RR: 0.75, 95% CI: 0.59-0.94, p = 0.01, I2 = 0, moderate-quality evidence). The incidence of mortality and stage II or higher NEC was comparable in rEPO and control infants. CONCLUSION Our results suggest that rEPO does not affect the risk of developing BPD in preterm infants. Adequately powered RCTs are required to further confirm these findings.
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Affiliation(s)
- Jing Li
- Department of Neonatology, The First Affiliated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Jing Zhang
- Department of Neonatology, The First Affiliated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Qingfei Hao
- Department of Neonatology, The First Affiliated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Haoming Chen
- Department of Neonatology, The First Affiliated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Xiuyong Cheng
- Department of Neonatology, The First Affiliated Hospital of Zheng Zhou University, Zhengzhou, China
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11
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Pimenta DB, Varela VA, Datoguia TS, Caraciolo VB, Lopes GH, Pereira WO. The Bone Marrow Microenvironment Mechanisms in Acute Myeloid Leukemia. Front Cell Dev Biol 2021; 9:764698. [PMID: 34869355 PMCID: PMC8639599 DOI: 10.3389/fcell.2021.764698] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 10/20/2021] [Indexed: 12/13/2022] Open
Abstract
Bone marrow (BM) is a highly complex tissue that provides important regulatory signals to orchestrate hematopoiesis. Resident and transient cells occupy and interact with some well characterized niches to produce molecular and cellular mechanisms that interfere with differentiation, migration, survival, and proliferation in this microenvironment. The acute myeloid leukemia (AML), the most common and severe hematological neoplasm in adults, arises and develop in the BM. The osteoblastic, vascular, and reticular niches provide surface co-receptors, soluble factors, cytokines, and chemokines that mediate important functions on hematopoietic cells and leukemic blasts. There are some evidences of how AML modify the architecture and function of these three BM niches, but it has been still unclear how essential those modifications are to maintain AML development. Basic studies and clinical trials have been suggesting that disturbing specific cells and molecules into the BM niches might be able to impair leukemia competencies. Either through niche-specific molecule inhibition alone or in combination with more traditional drugs, the bone marrow microenvironment is currently considered the potential target for new strategies to treat AML patients. This review describes the cellular and molecular constitution of the BM niches under healthy and AML conditions, presenting this anatomical compartment by a new perspective: as a prospective target for current and next generation therapies.
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Affiliation(s)
- Débora Bifano Pimenta
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Vanessa Araujo Varela
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Tarcila Santos Datoguia
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Victória Bulcão Caraciolo
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Gabriel Herculano Lopes
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Welbert Oliveira Pereira
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, Brazil
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12
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Xue C, Li G, Lu J, Li L. Crosstalk between circRNAs and the PI3K/AKT signaling pathway in cancer progression. Signal Transduct Target Ther 2021; 6:400. [PMID: 34815385 PMCID: PMC8611092 DOI: 10.1038/s41392-021-00788-w] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/30/2021] [Accepted: 10/08/2021] [Indexed: 02/06/2023] Open
Abstract
Circular RNAs (circRNAs), covalently closed noncoding RNAs, are widely expressed in eukaryotes and viruses. They can function by regulating target gene expression, linear RNA transcription and protein generation. The phosphoinositide 3-kinase (PI3K)/AKT signaling pathway plays key roles in many biological and cellular processes, such as cell proliferation, growth, invasion, migration, and angiogenesis. It also plays a pivotal role in cancer progression. Emerging data suggest that the circRNA/PI3K/AKT axis modulates the expression of cancer-associated genes and thus regulates tumor progression. Aberrant regulation of the expression of circRNAs in the circRNA/PI3K/AKT axis is significantly associated with clinicopathological characteristics and plays an important role in the regulation of biological functions. In this review, we summarized the expression and biological functions of PI3K-AKT-related circRNAs in vitro and in vivo and assessed their associations with clinicopathological characteristics. We also further discussed the important role of circRNAs in the diagnosis, prognostication, and treatment of cancers.
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Affiliation(s)
- Chen Xue
- grid.452661.20000 0004 1803 6319State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003 China
| | - Ganglei Li
- grid.452661.20000 0004 1803 6319Department of Neurosurgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003 China
| | - Juan Lu
- grid.452661.20000 0004 1803 6319State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003 China
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China.
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13
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Wang QN, Bao XY, Zou ZX, Wang XP, Zhang Q, Li DS, Zhao YQ, Duan L. The role of atorvastatin in collateral circulation formation induced by encephaloduroarteriosynangiosis: a prospective trial. Neurosurg Focus 2021; 51:E9. [PMID: 34469867 DOI: 10.3171/2021.6.focus21112] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 06/21/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE This prospective study was designed to confirm the role of atorvastatin in collateral circulation formation induced by encephaloduroarteriosynangiosis (EDAS) in patients with moyamoya disease (MMD). METHODS Patients who were diagnosed with MMD at the Department of Neurosurgery in the Fifth Medical Center of Chinese PLA General Hospital, Beijing, China, between June 2017 and May 2018 were included. Blood samples were obtained from an antecubital vein and were analyzed using flow cytometry. Endothelial progenitor cells (EPCs) were defined as CD34brCD133+CD45dimKDR+. All patients included in the study underwent EDAS. Patients voluntarily chose whether to undergo atorvastatin treatment after EDAS. The correlation between atorvastatin and good postoperative collateral circulation was evaluated. RESULTS A total of 106 patients with MMD were included in this study. Fifty-three patients (50%) received atorvastatin treatment. The baseline characteristics did not display statistically significant differences between the atorvastatin-treated and non-atorvastatin groups. Seventy-eight (42.9%) of the 182 hemispheres investigated postoperatively were classified as grade A collateral circulation, 47 (25.8%) as grade B, and 57 (31.3%) as grade C. Multivariate analysis revealed that only atorvastatin was significantly correlated with good collateral circulation after EDAS (p = 0.041). CONCLUSIONS The results of this prospective clinical trial have indicated that atorvastatin administered at 20 mg daily is safe and effective for the formation of postoperative collateral induced by EDAS.
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Affiliation(s)
- Qian-Nan Wang
- 1Department of Neurosurgery, Chinese PLA General Hospital (former Department of Neurosurgery, the Eighth Medical Center of Chinese PLA General Hospital); and
| | - Xiang-Yang Bao
- 2Department of Neurosurgery, Chinese PLA General Hospital (former Department of Neurosurgery, the Fifth Medical Center of Chinese PLA General Hospital), Beijing, China
| | - Zheng-Xing Zou
- 2Department of Neurosurgery, Chinese PLA General Hospital (former Department of Neurosurgery, the Fifth Medical Center of Chinese PLA General Hospital), Beijing, China
| | - Xiao-Peng Wang
- 2Department of Neurosurgery, Chinese PLA General Hospital (former Department of Neurosurgery, the Fifth Medical Center of Chinese PLA General Hospital), Beijing, China
| | - Qian Zhang
- 2Department of Neurosurgery, Chinese PLA General Hospital (former Department of Neurosurgery, the Fifth Medical Center of Chinese PLA General Hospital), Beijing, China
| | - De-Sheng Li
- 2Department of Neurosurgery, Chinese PLA General Hospital (former Department of Neurosurgery, the Fifth Medical Center of Chinese PLA General Hospital), Beijing, China
| | - Ya-Qun Zhao
- 1Department of Neurosurgery, Chinese PLA General Hospital (former Department of Neurosurgery, the Eighth Medical Center of Chinese PLA General Hospital); and
| | - Lian Duan
- 2Department of Neurosurgery, Chinese PLA General Hospital (former Department of Neurosurgery, the Fifth Medical Center of Chinese PLA General Hospital), Beijing, China
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14
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Nagar H, Kim S, Lee I, Choi SJ, Piao S, Jeon BH, Shong M, Kim CS. CRIF1 deficiency suppresses endothelial cell migration via upregulation of RhoGDI2. PLoS One 2021; 16:e0256646. [PMID: 34437633 PMCID: PMC8389428 DOI: 10.1371/journal.pone.0256646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 08/11/2021] [Indexed: 11/22/2022] Open
Abstract
Rho GDP-dissociation inhibitor (RhoGDI), a downregulator of Rho family GTPases, prevents nucleotide exchange and membrane association. It is responsible for the activation of Rho GTPases, which regulate a variety of cellular processes, such as migration. Although RhoGDI2 has been identified as a tumor suppressor gene involved in cellular migration and invasion, little is known about its role in vascular endothelial cell (EC) migration. CR6-interacting factor 1 (CRIF1) is a CR6/GADD45-interacting protein with important mitochondrial functions and regulation of cell growth. We examined the expression of RhoGDI2 in CRIF1-deficient human umbilical vein endothelial cells (HUVECs) and its role in cell migration. Expression of RhoGDI2 was found to be considerably higher in CRIF1-deficient HUVECs along with suppression of cell migration. Moreover, the phosphorylation levels of Akt and CREB were decreased in CRIF1-silenced cells. The Akt-CREB signaling pathway was implicated in the changes in endothelial cell migration caused by CRIF1 downregulation. In addition to RhoGDI2, we identified another factor that promotes migration and invasion of ECs. Adrenomedullin2 (ADM2) is an autocrine/paracrine factor that regulates vascular tone and other vascular functions. Endogenous ADM2 levels were elevated in CRIF1-silenced HUVECs with no effect on cell migration. However, siRNA-mediated depletion of RhoGDI2 or exogenous ADM2 administration significantly restored cell migration via the Akt-CREB signaling pathway. In conclusion, RhoGDI2 and ADM2 play important roles in the migration of CRIF1-deficient endothelial cells.
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Affiliation(s)
- Harsha Nagar
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Seonhee Kim
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
- Department of BK21 Plus CNU Integrative Biomedical Education Initiative, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Ikjun Lee
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
- Department of BK21 Plus CNU Integrative Biomedical Education Initiative, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Su-Jeong Choi
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Shuyu Piao
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Byeong Hwa Jeon
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Cuk-Seong Kim
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
- * E-mail:
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15
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Cao X, Li B, Han X, Zhang X, Dang M, Wang H, Du F, Zeng X, Guo C. Soluble receptor for advanced glycation end-products promotes angiogenesis through activation of STAT3 in myocardial ischemia/reperfusion injury. Apoptosis 2021; 25:341-353. [PMID: 32333220 DOI: 10.1007/s10495-020-01602-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Soluble receptor for advanced glycation end-products (sRAGE), which exerts cardioprotective effect through inhibiting cardiomyocyte apoptosis and autophagy during ischemia/reperfusion (I/R) injury, is also known to enhance angiogenesis in post-ischemic reperfusion injury-critical limb ischemia (PIRI-CLI) mice. However, whether sRAGE protects the heart from myocardial I/R injury via promoting angiogenesis remains unclear. Myocardial model of I/R injury was conducted by left anterior descending (LAD) ligation for 30 min and reperfusion for 2 weeks in C57BL/6 mice. And I/R injury in cardiac microvascular endothelial cells (CMECs) was duplicated by oxygen and glucose deprivation. The results showed that I/R-induced cardiac dysfunction, inflammation and myocardial fibrosis were all reversed by sRAGE. CD31 immunohistochemistry staining showed that sRAGE increased the density of vessels after I/R injury. The results from cultured CMECs showed that sRAGE inhibited apoptosis and increased proliferation, migration, angiogenesis after exposure to I/R. These effects were dependent on signal transducer and activator of transcription 3 (STAT3) pathway. Together, the present study demonstrated that activation of STAT3 contributed to the protective effects of sRAGE on myocardial I/R injury via promoting angiogenesis.
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Affiliation(s)
- Xianxian Cao
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, No. 119 South 4th Ring West Road, Fengtai District, Beijing, 100070, People's Republic of China
| | - Bin Li
- Department of Physiology and Pathophysiology, Capital Medical University, No. 10 You An Men Wai Xi Tou Tiao, Fengtai District, Beijing, 100069, People's Republic of China
| | - Xuejie Han
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, No. 119 South 4th Ring West Road, Fengtai District, Beijing, 100070, People's Republic of China
| | - Xiuling Zhang
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, No. 119 South 4th Ring West Road, Fengtai District, Beijing, 100070, People's Republic of China
| | - Mengqiu Dang
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, No. 119 South 4th Ring West Road, Fengtai District, Beijing, 100070, People's Republic of China
| | - Hongxia Wang
- Department of Physiology and Pathophysiology, Capital Medical University, No. 10 You An Men Wai Xi Tou Tiao, Fengtai District, Beijing, 100069, People's Republic of China
| | - Fenghe Du
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, No. 119 South 4th Ring West Road, Fengtai District, Beijing, 100070, People's Republic of China.,Department of Geriatrics, Beijing Tiantan Hospital, Capital Medical University, No. 119 South 4th Ring West Road, Fengtai District, Beijing, 100070, People's Republic of China
| | - Xiangjun Zeng
- Department of Physiology and Pathophysiology, Capital Medical University, No. 10 You An Men Wai Xi Tou Tiao, Fengtai District, Beijing, 100069, People's Republic of China.
| | - Caixia Guo
- Department of Cardiology, Beijing Tiantan Hospital, Capital Medical University, No. 119 South 4th Ring West Road, Fengtai District, Beijing, 100070, People's Republic of China. .,Clinical Trial Center, Beijing Tiantan Hospital, National Clinical Trial Institution, Capital Medical University, No. 119 South 4th Ring West Road, Fengtai District, Beijing, 100070, People's Republic of China.
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16
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Jiang X, Hu J, Wu Z, Cafarello ST, Di Matteo M, Shen Y, Dong X, Adler H, Mazzone M, Ruiz de Almodovar C, Wang X. Protein Phosphatase 2A Mediates YAP Activation in Endothelial Cells Upon VEGF Stimulation and Matrix Stiffness. Front Cell Dev Biol 2021; 9:675562. [PMID: 34055807 PMCID: PMC8158299 DOI: 10.3389/fcell.2021.675562] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 04/08/2021] [Indexed: 01/14/2023] Open
Abstract
Angiogenesis is an essential process during development. Abnormal angiogenesis also contributes to many disease conditions such as tumor and retinal diseases. Previous studies have established the Hippo signaling pathway effector Yes-associated protein (YAP) as a crucial regulator of angiogenesis. In ECs, activated YAP promotes endothelial cell proliferation, migration and sprouting. YAP activity is regulated by vascular endothelial growth factor (VEGF) and mechanical cues such as extracellular matrix (ECM) stiffness. However, it is unclear how VEGF or ECM stiffness signal to YAP, especially how dephosphorylation of YAP occurs in response to VEGF stimulus or ECM stiffening. Here, we show that protein phosphatase 2A (PP2A) is required for this process. Blocking PP2A activity abolishes VEGF or ECM stiffening mediated YAP activation. Systemic administration of a PP2A inhibitor suppresses YAP activity in blood vessels in developmental and pathological angiogenesis mouse models. Consistently, PP2A inhibitor also inhibits sprouting angiogenesis. Mechanistically, PP2A directly interacts with YAP, and this interaction requires proper cytoskeleton dynamics. These findings identify PP2A as a crucial mediator of YAP activation in ECs and hence as an important regulator of angiogenesis.
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Affiliation(s)
- Xiao Jiang
- Laboratory of Molecular Ophthalmology, Department of Pharmacology, Tianjin Key Laboratory of Inflammation Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Jiandong Hu
- Laboratory of Molecular Ophthalmology, Department of Pharmacology, Tianjin Key Laboratory of Inflammation Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Ziru Wu
- Laboratory of Molecular Ophthalmology, Department of Pharmacology, Tianjin Key Laboratory of Inflammation Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Sarah Trusso Cafarello
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Mario Di Matteo
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Ying Shen
- European Center for Angioscience, Medicine Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Xue Dong
- Laboratory of Molecular Ophthalmology, Department of Pharmacology, Tianjin Key Laboratory of Inflammation Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China.,Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin, China
| | - Heike Adler
- European Center for Angioscience, Medicine Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Massimiliano Mazzone
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, VIB, Leuven, Belgium
| | - Carmen Ruiz de Almodovar
- European Center for Angioscience, Medicine Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Xiaohong Wang
- Laboratory of Molecular Ophthalmology, Department of Pharmacology, Tianjin Key Laboratory of Inflammation Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China.,Key Laboratory of Immune Microenvironment and Disease, Ministry of Education, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
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17
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Adini A, Adini I, Grad E, Tal Y, Danenberg HD, Kang PM, Matthews BD, D’Amato RJ. The Prominin-1-Derived Peptide Improves Cardiac Function Following Ischemia. Int J Mol Sci 2021; 22:5169. [PMID: 34068392 PMCID: PMC8153573 DOI: 10.3390/ijms22105169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/26/2021] [Accepted: 05/11/2021] [Indexed: 12/11/2022] Open
Abstract
Myocardial infarction (MI) remains the leading cause of death in the western world. Despite advancements in interventional revascularization technologies, many patients are not candidates for them due to comorbidities or lack of local resources. Non-invasive approaches to accelerate revascularization within ischemic tissues through angiogenesis by providing Vascular Endothelial Growth Factor (VEGF) in protein or gene form has been effective in animal models but not in humans likely due to its short half-life and systemic toxicity. Here, we tested the hypothesis that PR1P, a small VEGF binding peptide that we developed, which stabilizes and upregulates endogenous VEGF, could be used to improve outcome from MI in rodents. To test this hypothesis, we induced MI in mice and rats via left coronary artery ligation and then treated animals with every other day intraperitoneal PR1P or scrambled peptide for 14 days. Hemodynamic monitoring and echocardiography in mice and echocardiography in rats at 14 days showed PR1P significantly improved multiple functional markers of heart function, including stroke volume and cardiac output. Furthermore, molecular biology and histological analyses of tissue samples showed that systemic PR1P targeted, stabilized and upregulated endogenous VEGF within ischemic myocardium. We conclude that PR1P is a potential non-invasive candidate therapeutic for MI.
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Affiliation(s)
- Avner Adini
- Vascular Biology Program, Department of Surgery, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (B.D.M.); (R.J.D.)
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Irit Adini
- Department of Surgery, Harvard Medical School, The Center for Engineering in Medicine, Mass General Hospital, Shriners Hospitals for Children Boston, Boston, MA 02114, USA;
| | - Etty Grad
- Interventional Cardiology, Heart Institute, Hadassah Hebrew University Medical Center, Jerusalem 91200, Israel; (E.G.); (H.D.D.)
| | - Yuval Tal
- Allergy and Clinical Immunology Unit and Department of Medicine, Hadassah University Medical Center, Jerusalem 91200, Israel;
| | - Haim D. Danenberg
- Interventional Cardiology, Heart Institute, Hadassah Hebrew University Medical Center, Jerusalem 91200, Israel; (E.G.); (H.D.D.)
| | - Peter M. Kang
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA;
| | - Benjamin D. Matthews
- Vascular Biology Program, Department of Surgery, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (B.D.M.); (R.J.D.)
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Robert J. D’Amato
- Vascular Biology Program, Department of Surgery, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (B.D.M.); (R.J.D.)
- Department of Ophthalmology, Harvard Medical School, Boston, MA 02115, USA
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18
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Wierzbicka A, Mańkowska-Wierzbicka D, Cieślewicz S, Stelmach-Mardas M, Mardas M. Interventions Preventing Vaginitis, Vaginal Atrophy after Brachytherapy or Radiotherapy Due to Malignant Tumors of the Female Reproductive Organs-A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:3932. [PMID: 33918070 PMCID: PMC8070443 DOI: 10.3390/ijerph18083932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/02/2021] [Accepted: 04/07/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND Radiotherapy, as a method of treatment of cervical and uterine cancers, may induce severe late-onset vaginal side effects. Unfortunately, little evidence on the management of adverse effects has been presented. This study aimed to evaluate the available interventions which reduce symptoms of vaginitis and vaginal atrophy by improving dyspareunia, mucosal inflammation, vaginal pH and vaginal dryness in women who have undergone brachytherapy or radiotherapy due to uterine or cervical malignancies. MATERIALS AND METHODS A comprehensive literature search was performed following PRISMA guidelines. The systematic search was conducted using electronic databases, namely Scopus, Web of Science and PubMed, between October and November 2020 to identify randomized controlled trials (RCT) and, prospective randomized studies (PRS). RESULTS The analyzed population consists of 376 patients with uterine or cervical cancer, treated with hyaluronic acid, vitamin A, vitamin E, alpha-tocopherol acetate and dienestrol. Intervention with HA along with vitamin A and vitamin E revealed advantage in endpoints such as reduced dyspareunia, vaginal mucosal inflammation, vaginal dryness, bleeding, fibrosis and cellular atypia. Administration of alpha-tocopherol acetate reduced vaginal mucosal inflammation and improved vaginal acanthosis, whereas dienestrol resulted in reduced dyspareunia, vaginal caliber and bleeding. CONCLUSIONS Vaginal suppositories were found to be clinically effective at the management of late-onset vulvovaginal side effects after radiotherapy.
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Affiliation(s)
- Adrianna Wierzbicka
- Department of Obesity Treatment, Metabolic Disorders and Clinical Dietetics, Poznan University of Medical Science, Szamarzewskiego 84 St, 60-569 Poznan, Poland
| | - Dorota Mańkowska-Wierzbicka
- Department of Gastroenterology, Dietetics and Internal Medicine, Poznan University of Medical Sciences, Heliodor Święcicki Hospital, Przybyszewskiego 49, 60-355 Poznań, Poland
| | - Stanisław Cieślewicz
- Department of Oncology, Poznan University of Medical Science, Szamarzewskiego 82/84 St, 60-569 Poznan, Poland
| | - Marta Stelmach-Mardas
- Department of Obesity Treatment, Metabolic Disorders and Clinical Dietetics, Poznan University of Medical Science, Szamarzewskiego 84 St, 60-569 Poznan, Poland
| | - Marcin Mardas
- Department of Oncology, Poznan University of Medical Science, Szamarzewskiego 82/84 St, 60-569 Poznan, Poland
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19
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Liu H, Wang N, Li J, Wang W, Han W, Li Q. AAV1-Mediated shRNA Knockdown of SASH1 in Rat Bronchus Attenuates Hypoxia-Induced Pulmonary Artery Remodeling. Hum Gene Ther 2021; 32:796-805. [PMID: 33297837 DOI: 10.1089/hum.2020.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Pulmonary hypertension (PH) is a proliferative disease characterized by pulmonary arterial remodeling (PAR). SAM and SH3 domain containing 1 (SASH1) is a novel tumor suppressor gene whose biological function in PH is unclear. In this study, a hypoxia-induced pulmonary hypertension (HPH) rat model was constructed to explore the role of SASH1 in PAR. Histopathological changes in the lung tissue and hemodynamic alteration were detected in SASH1-knockdown rats through adeno-associated virus type-1 (AAV1) infection. In vitro, primary human pulmonary arterial smooth muscle cells (HPASMCs) were transfected with SASH1siRNA to investigate the effects of SASH1 on hypoxia-induced proliferation and migration. The molecular mechanisms associated with SASH1 were explored through knockdown and overexpression approaches. We found that SASH1 expression was significantly increased in rat pulmonary arteries and HPASMCs after hypoxia exposure. In vivo, silencing the SASH1 gene expression improved HPH in rats. The SASH1 downregulation inhibited proliferation and migration of hypoxia-induced HPASMCs. The protein expression of phospho-AKT (known as protein kinase B), proliferating cell nuclear antigen, and matrix metalloproteinase 9 (MMP9) in HPASMCs were increased after SASH1 overexpression, whereas these effects were inhibited by SASH1 knockdown. In conclusion, SASH1 downregulation improved hypoxia-induced PAR and PH. SASH1 may be a novel target for PH gene therapy in the era of precision medicine.
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Affiliation(s)
- Hong Liu
- Departments of Respiratory and Critical Care Medicine and.,Departments of Respiratory Disease Key Laboratory of Qingdao, Qingdao Municipal Hospital, Qingdao, China
| | - Ning Wang
- Departments of Respiratory and Critical Care Medicine and
| | - Jun Li
- Departments of Respiratory and Critical Care Medicine and
| | - Wenting Wang
- Departments of Oncology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, China
| | - Wei Han
- Departments of Respiratory and Critical Care Medicine and.,Departments of Respiratory Disease Key Laboratory of Qingdao, Qingdao Municipal Hospital, Qingdao, China
| | - Qinghai Li
- Departments of Respiratory and Critical Care Medicine and.,Departments of Respiratory Disease Key Laboratory of Qingdao, Qingdao Municipal Hospital, Qingdao, China
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20
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Wang H, Pan J, Barsky L, Jacob JC, Zheng Y, Gao C, Wang S, Zhu W, Sun H, Lu L, Jia H, Zhao Y, Bruns C, Vago R, Dong Q, Qin L. Characteristics of pre-metastatic niche: the landscape of molecular and cellular pathways. MOLECULAR BIOMEDICINE 2021; 2:3. [PMID: 35006432 PMCID: PMC8607426 DOI: 10.1186/s43556-020-00022-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/30/2020] [Indexed: 02/08/2023] Open
Abstract
Metastasis is a major contributor to cancer-associated deaths. It involves complex interactions between primary tumorigenic sites and future metastatic sites. Accumulation studies have revealed that tumour metastasis is not a disorderly spontaneous incident but the climax of a series of sequential and dynamic events including the development of a pre-metastatic niche (PMN) suitable for a subpopulation of tumour cells to colonize and develop into metastases. A deep understanding of the formation, characteristics and function of the PMN is required for developing new therapeutic strategies to treat tumour patients. It is rapidly becoming evident that therapies targeting PMN may be successful in averting tumour metastasis at an early stage. This review highlights the key components and main characteristics of the PMN and describes potential therapeutic strategies, providing a promising foundation for future studies.
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Affiliation(s)
- Hao Wang
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Junjie Pan
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Livnat Barsky
- Avram and Stella Goldstein-Goren, Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | | | - Yan Zheng
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Chao Gao
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Shun Wang
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Wenwei Zhu
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Haoting Sun
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Lu Lu
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Huliang Jia
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Yue Zhao
- Department of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany
| | - Christiane Bruns
- Department of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany
| | - Razi Vago
- Avram and Stella Goldstein-Goren, Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
| | - Qiongzhu Dong
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China.
| | - Lunxiu Qin
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China.
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21
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Wu W, Xia X, Tang L, Yao F, Xu H, Lei H. Normal vitreous promotes angiogenesis via activation of Axl. FASEB J 2020; 35:e21152. [PMID: 33151576 DOI: 10.1096/fj.201903105r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 09/30/2020] [Accepted: 10/14/2020] [Indexed: 12/13/2022]
Abstract
Vitreous has been reported to prevent tumor angiogenesis, but our previous findings indicate that vitreous activate the signaling pathway of phosphoinositide 3-kinase (PI3K)/Akt, which plays a critical role in angiogenesis. The goal of this research is to determine which role of vitreous plays in angiogenesis-related cellular responses in vitro. We found that in human retinal microvascular endothelial cells (HRECs) vitreous activates a number of receptor tyrosine kinases including Anexelekto (Axl), which plays an important role in angiogenesis. Subsequently, we discovered that depletion of Axl using CRISPR/Cas9 and an Axl-specific inhibitor R428 suppress vitreous-induced Akt activation and cell proliferation, migration, and tuber formation of HRECs. Therefore, this line of research not only demonstrate that vitreous promotes angiogenesis in vitro, but also reveal that Axl is one of receptor tyrosine kinases to mediate vitreous-induced angiogenesis in vitro, thereby providing a molecular basis for removal of vitreous as cleanly as possible when vitrectomy is performed in treating patients with proliferative diabetic retinopathy.
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Affiliation(s)
- Wenyi Wu
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China.,Department of Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA
| | - Xiaobo Xia
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
| | - Luosheng Tang
- Department of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha, China
| | - Fei Yao
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
| | - Huizuo Xu
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
| | - Hetian Lei
- Department of Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA.,Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, China
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22
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Xie Y, Guo Y, Cao S, Xue M, Fan Z, Gao C, Jin B. Hydroxysafflor Yellow A Attenuates Hydrogen Peroxide-Induced Oxidative Damage on Human Umbilical Vein Endothelial Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2020; 2020:8214128. [PMID: 33204292 PMCID: PMC7657673 DOI: 10.1155/2020/8214128] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/28/2020] [Accepted: 10/21/2020] [Indexed: 12/17/2022]
Abstract
Oxidative stress of endothelial cells is thought to be a principal cause that induces many cardiovascular diseases. Hydroxysafflor yellow A (HSYA) is a major active component in traditional Chinese medicine safflower and has been used to cure ischemic cardiovascular diseases in China for many years. This study aims to investigate whether HSYA has a repairing effect on oxidative damage of human umbilical vein endothelial cells (HUVECs) induced by H2O2 and to provide a theoretical basis for the clinical treatment of cardiovascular diseases related to traditional Chinese medicine. Based on the establishment of an H2O2-induced HUVEC oxidative injury model, the cell viability and proliferation rate were measured by the MTT assay and EdU staining. The intracellular GSH/GSSG ratio and SOD activity were determined by kits. The ROS level was detected by flow cytometry. And the BAX, Bcl-2, PTEN, and AKT expressions were evaluated with western blotting methods. The results showed that HSYA treatment significantly attenuated the H2O2-induced HUVEC cell damage, increased the intracellular GSH/GSSG ratio and unit SOD activity also, and decreased the intracellular ROS levels. Furthermore, HSYA increased the expressions of AKT and Bcl-2 proteins and inhibited the expressions of BAX and PTEN proteins. These suggest that HSYA exerts repair effects on H2O2-induced oxidative damage in HUVECs, and the mechanisms may be related to the influence of BAX/Bcl-2 expression and AKT/PTEN signal pathway expression.
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Affiliation(s)
- Yuefeng Xie
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Yan Guo
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
- College of Basic Medicine & Public Health, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - ShiDong Cao
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Miaomiao Xue
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - ZhaoYue Fan
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - ChengXian Gao
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Bo Jin
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
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23
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Wang W, Liu Y, You L, Sun M, Qu C, Dong X, Yin X, Ni J. Inhibitory effects of Paris saponin I, II, Ⅵ and Ⅶ on HUVEC cells through regulation of VEGFR2, PI3K/AKT/mTOR, Src/eNOS, PLCγ/ERK/MERK, and JAK2-STAT3 pathways. Biomed Pharmacother 2020; 131:110750. [PMID: 32942160 DOI: 10.1016/j.biopha.2020.110750] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/03/2020] [Accepted: 09/07/2020] [Indexed: 02/07/2023] Open
Abstract
Rhizoma Paris is a popular Chinese medicine in clinics. It contains four main saponins which are its major bioactive compounds. These saponins are Paris saponin I, II, VI and VII (PSI, PSII, PSVI and PSVII, respectively). Up to now, the research using HUVEC cells to evaluate the anti-angiogenic activity of four saponins is blank. The purpose of this study was to evaluate the anti-angiogenic properties (also known as angiotoxicity) of the four saponins in Rhizoma Paris on vascular endothelial cells-HUVEC cells, and to investigate the underlying mechanism, which has not been studied before. In this study, MTT assay, Lactate dehydrogenase (LDH) assay, wound healing experiments, transwell cell invasion assay, tubule formation experiment, DAPI staining, AV-PI double staining, and cell cycle analysis were used to determine the effects of Paris saponins. The results showed that, with increases in concentrations of PSI, PSII, PSVI and PSVII, the viability of HUVEC cells decreased significantly. In addition, four saponins dose-dependent enhanced LDH release and inhibited HUVEC cell migration, invasion, and angiogenesis. In terms of mechanism, PSI significantly inhibited protein expression in multiple signaling pathways. In particular, with the VEGF2 as the target, it activate the downstream PI3K / AKT / mTOR, SRC / eNOS, P38, PLCγ / ERK / MERK and JAK2/STAT3 signaling pathways. In conclusion, PSI, PSII, PSVI and PSVII can inhibit endothelial cell proliferation, migration and invasion, block endothelial cell cycle, induce endothelial cell apoptosis, act on protein expression in several anti-angiogenic signaling pathways, and finally inhibit angiogenesis in vitro. This study provides further data support for the clinical application of Paris saponins as antiangiogenic drugs.
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Affiliation(s)
- Wenping Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yi Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Longtai You
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Mingyi Sun
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Changhai Qu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - XiaoXv Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Xingbin Yin
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Jian Ni
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China.
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24
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The histone lysine methyltransferase SETD8 regulates angiogenesis through HES-1 in human umbilical vein endothelial cells. Sci Rep 2020; 10:12089. [PMID: 32694555 PMCID: PMC7374624 DOI: 10.1038/s41598-020-69103-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 07/01/2020] [Indexed: 01/11/2023] Open
Abstract
Histone modifications, including histone lysine methylation, regulate gene expression in the vasculature, and targeting tumor blood vessels through histone modification decreases tumor growth. SETD8, a methyltransferase that catalyzes the mono-methylation of histone H4 lysine 20 is known to promote tumorigenesis in various cancers and its high levels of expression are related to poor prognosis. However, the detailed mechanisms by which SETD8 stimulates tumor progression and angiogenesis are still not well understood. Recent studies have demonstrated that, in vitro, BVT-948 efficiently and selectively suppresses SETD8 activity and histone methylation levels. In this study, we showed that BVT-948-mediated SETD8 inhibition in HUVECs results in an inhibition of angiogenesis. Inhibition of SETD8 not only inhibited angiogenesis but also disrupted actin stress fiber formation and induced cell cycle arrest at S phase. These effects were accompanied by increased HES-1 expression levels, decreased osteopontin levels, and a decreased differentiation of human induced pluripotent stem cells into endothelial cells. Interestingly, BVT-948 treatment reduced pathological angiogenesis in mouse OIR model. These data illustrate the mechanisms by which SETD8 regulates angiogenesis and may enable the use of a SETD8 inhibitor to treat various pathological conditions that are known to be associated with excessive angiogenesis, including and tumor growth.
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25
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Wu W, Zhou G, Han H, Huang X, Jiang H, Mukai S, Kazlauskas A, Cui J, Matsubara JA, Vanhaesebroeck B, Xia X, Wang J, Lei H. PI3Kδ as a Novel Therapeutic Target in Pathological Angiogenesis. Diabetes 2020; 69:736-748. [PMID: 31915155 PMCID: PMC7085248 DOI: 10.2337/db19-0713] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 12/25/2019] [Indexed: 12/12/2022]
Abstract
Diabetic retinopathy is the most common microvascular complication of diabetes, and in the advanced diabetic retinopathy appear vitreal fibrovascular membranes that consist of a variety of cells, including vascular endothelial cells (ECs). New therapeutic approaches for this diabetic complication are urgently needed. Here, we report that in cultured human retinal microvascular ECs, high glucose induced expression of p110δ, which was also expressed in ECs of fibrovascular membranes from patients with diabetes. This catalytic subunit of a receptor-regulated PI3K isoform δ is known to be highly enriched in leukocytes. Using genetic and pharmacological approaches, we show that p110δ activity in cultured ECs controls Akt activation, cell proliferation, migration, and tube formation induced by vascular endothelial growth factor, basic fibroblast growth factor, and epidermal growth factor. Using a mouse model of oxygen-induced retinopathy, p110δ inactivation was found to attenuate pathological retinal angiogenesis. p110δ inhibitors have been approved for use in human B-cell malignancies. Our data suggest that antagonizing p110δ constitutes a previously unappreciated therapeutic opportunity for diabetic retinopathy.
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Affiliation(s)
- Wenyi Wu
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- Schepens Eye Research Institute of Massachusetts Eye and Ear and Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Guohong Zhou
- Schepens Eye Research Institute of Massachusetts Eye and Ear and Department of Ophthalmology, Harvard Medical School, Boston, MA
- Shanxi Eye Hospital, Taiyuan, China
| | - Haote Han
- Schepens Eye Research Institute of Massachusetts Eye and Ear and Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Xionggao Huang
- Schepens Eye Research Institute of Massachusetts Eye and Ear and Department of Ophthalmology, Harvard Medical School, Boston, MA
- Department of Ophthalmology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Heng Jiang
- Schepens Eye Research Institute of Massachusetts Eye and Ear and Department of Ophthalmology, Harvard Medical School, Boston, MA
- Department of Ophthalmology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Shizuo Mukai
- Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Andrius Kazlauskas
- Department of Ophthalmology and Visual Sciences and Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL
| | - Jing Cui
- The University of British Columbia, Vancouver, British Columbia, Canada
| | | | | | - Xiaobo Xia
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
| | - Jiantao Wang
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Shenzhen, China
| | - Hetian Lei
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Shenzhen, China
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26
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Protective effects of Salidroside on cardiac function in mice with myocardial infarction. Sci Rep 2019; 9:18127. [PMID: 31792327 PMCID: PMC6888872 DOI: 10.1038/s41598-019-54713-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 11/18/2019] [Indexed: 01/19/2023] Open
Abstract
Salidroside (SAL) is the major ingredient of Rhodiola rosea, and has been traditionally used in Chinese medicine for decades. Numerous studies have demonstrated the protective effects of SAL for myocardial ischemia. However, it is yet to be deciphered whether SAL has cardioprotective effects after myocardial infarction (MI) in vivo. In the present study, we established a mouse MI model via coronary artery ligation. The aim was to investigate whether SAL treatment could reduce mortality, improve cardiac function and attenuate myocardial remodeling in MI mice. Post-surgery, mice were randomly administered SAL or normal saline. After 21 days, SAL was found to significantly reduce mortality, improve cardiac function, reduce fibrosis and infarct size compared to normal saline. In addition, oral administration of SAL could attenuate myocardial inflammation and apoptosis and promote angiogenesis. SAL down-regulated the expression levels of TNF-α, TGF-β1, IL-1β, Bax and up-regulate the expression of Bcl-2, VEGF, Akt and eNOS. These results indicated that SAL could alleviate the pathological processes of myocardial remodeling in MI mice, and may be a potentially effective therapeutic approach for the management of clinical ischemic cardiovascular diseases.
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27
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Song H, Fu Y, Wan D, Xia W, Lyu F, Liu L, Shen L. Mytoxin B and Myrothecine A Induce Apoptosis in Human Hepatocarcinoma Cell Line SMMC-7721 via PI3K/Akt Signaling Pathway. Molecules 2019; 24:E2291. [PMID: 31226773 PMCID: PMC6630475 DOI: 10.3390/molecules24122291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 11/20/2022] Open
Abstract
Trichothecene macrolides comprise a class of valuable leading compounds in developing anticancer drugs, however, there are few reports concerning their anticancer mechanisms, especially the anticancer mechanism of the 10,13-cyclotrichothecane derivatives that are found mainly in symbiotic fungi. In vitro anticancer activity of two trichothecene macrolides mytoxin B and myrothecine A against the human hepatocarcinoma cell line SMMC-7721 was investigated in the present study. MTT assay showed that mytoxin B and myrothecine A inhibited the proliferation of SMMC-7721 cells in dose- and time-dependent manners. Annexin V-FITC/PI dual staining assay revealed that mytoxin B and myrothecine A both could induce SMMC-7721 cells apoptosis in a dose-dependent manner. The decreased expression level of anti-apoptotic protein Bcl-2 and the increased expression level of pro-apoptotic protein Bax were observed apparently in Western blot analysis. The reduced ratio of Bcl-2/Bax further confirmed the apoptosis-inducing effect of mytoxin B and myrothecine A on SMMC-7721 cells. Moreover, the expression levels of caspases-3, -8, and -9, and cleaved caspases-3, -8, and -9 were all upregulated in both mytoxin B and myrothecine A-treated cells in Western blot analysis, which indicated that both compounds might induce SMMC-7721 cells apoptosis through not only the death receptor pathway but also the mitochondrial pathway. Finally, mytoxin B and myrothecine A were found to reduce the activity of PI3K/Akt signaling pathway that was similar to the effect of LY294002 (a potent and specific PI3K inhibitor), suggesting that both mytoxin B and myrothecine A might induce SMMC-7721 cells apoptosis via PI3K/Akt pathway.
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Affiliation(s)
- Huiliang Song
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China.
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China.
| | - Yi Fu
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou 215123, China.
| | - Dan Wan
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China.
| | - Wenjing Xia
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China.
| | - Fengwei Lyu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China.
| | - Lijun Liu
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, China.
| | - Li Shen
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China.
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China.
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China.
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28
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Astinfeshan M, Rasmi Y, Kheradmand F, Karimipour M, Rahbarghazi R, Aramwit P, Nasirzadeh M, Daeihassani B, Shirpoor A, Gholinejad Z, Saboory E. Curcumin inhibits angiogenesis in endothelial cells using downregulation of the PI3K/Akt signaling pathway. FOOD BIOSCI 2019. [DOI: 10.1016/j.fbio.2019.04.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Chen W, Xia P, Wang H, Tu J, Liang X, Zhang X, Li L. The endothelial tip-stalk cell selection and shuffling during angiogenesis. J Cell Commun Signal 2019; 13:291-301. [PMID: 30903604 DOI: 10.1007/s12079-019-00511-z] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 02/25/2019] [Indexed: 12/17/2022] Open
Abstract
Angiogenesis is a critical, fine-tuned, multi-staged biological process. Tip-stalk cell selection and shuffling are the building blocks of sprouting angiogenesis. Accumulated evidences show that tip-stalk cell selection and shuffling are regulated by a variety of physical, chemical and biological factors, especially the interaction among multiple genes, their products and environments. The classic Notch-VEGFR, Slit-Robo, ECM-binding integrin, semaphorin and CCN family play important roles in tip-stalk cell selection and shuffling. In this review, we outline the progress and prospect in the mechanism and the roles of the various molecules and related signaling pathways in endothelial tip-stalk cell selection and shuffling. In the future, the regulators of tip-stalk cell selection and shuffling would be the potential markers and targets for angiogenesis.
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Affiliation(s)
- Wenqi Chen
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Peng Xia
- Department of Anesthesia, Jilin Provincial People's Hospital, Changchun, China
| | - Heping Wang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, China
| | - Jihao Tu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Xinyue Liang
- The First Hospital of Jilin University, Changchun, China
| | - Xiaoling Zhang
- The First Hospital of Jilin University, Changchun, China. .,Institute of Immunology, Jilin University, Changchun, China.
| | - Lisha Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China.
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30
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Zanjani SB, Chodari L, Bavil FM, Sadeghzadeh P, Shahabi P. Effect of voluntary exercise on intracellular signalling pathways of angiogenesis in the sciatic nerve of type 1 diabetic castrated male rats. Physiol Int 2019; 106:39-47. [DOI: 10.1556/2060.106.2019.08] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Objectives
Impaired angiogenesis in sciatic nerve is a major complication of diabetic neuropathy. Protein kinase B (AKT) and extracellular signal regulated kinase (ERK) signaling pathways play critical roles during capillary-like network formation in the angiogenesis process.
Methods
Twenty-four adult male Wistar rats (weight: 250–300 g) were used in the research. The rats were randomly divided into four groups (n = 6): (1) diabetic (Dia), (2) diabetic + castration (Dia-Cas), (3) diabetic + exercise (Dia-E), and (4) diabetic + castration + exercise (Dia-Cas-E). Type 1 diabetes (T1D) was induced with streptozotocin (50 mg/kg). After 6 weeks, sciatic nerve was separated and used for histological evaluation and determination of phosphorylated AKT (P-AKT) and phosphorylated ERK (P-ERK) levels by ELISA method.
Results
Glucose levels decreased in the Dia-E group compared to the Dia-Cas group (p < 0.01). In addition, our finding shows that exercise in the Dia-Cas group diminished blood glucose levels compared to the Dia-Cas group but this effect of exercise was not significant. Voluntary exercise in the diabetic castrated group decreased P-AKT protein and increased P-ERK 1/2 protein levels in the sciatic tissue compared to the diabetes group significantly (p < 0.05). Histopathological findings showed that Dia-Cas group with 6-week exercise training significantly raised the number of microvascular density in the sciatic tissue of diabetic rats compared to the diabetic group (p < 0.05).
Conclusions
Voluntary exercise in diabetic rats increases angiogenesis in the sciatic nerve. The possible mechanism is the increase of P-ERK 1/2 but not P-AKT levels in the sciatic nerve of T1D rats.
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Affiliation(s)
- SB Zanjani
- 1 Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - L Chodari
- 2 Department of Physiology, Urmia University of Medical Sciences, Urmia, Iran
- 3 Neurophysiology Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - FM Bavil
- 4 Laboratory of Physiology, Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - P Sadeghzadeh
- 4 Laboratory of Physiology, Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - P Shahabi
- 1 Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- 4 Laboratory of Physiology, Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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31
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Abstract
Peroxisome proliferator-activated receptor γ (PPARγ) is a member of the nuclear receptor family and plays an important role in adipocyte differentiation, glucose homeostasis, and insulin sensitivity. Thiazolidinediones (TZDs), synthetic ligands of PPARγ, have been used for the treatment of diabetes mellitus for two decades. TZDs were expected to be amazing drugs not only for type 2 diabetes but also for metabolic syndrome and atherosclerotic vascular disease because they can reduce both insulin resistance and inflammation in experimental studies. However, serious unwanted effects pushed TZDs back to an optional second-tier drug for type 2 diabetes. Nevertheless, PPARγ is still one of the most important targets for the treatment of insulin resistance and diabetes mellitus, and novel strategies to modulate PPARγ activity to enhance its beneficial effects and reduce unwanted adverse effects are anticipated. Recent studies showed that post-translational modification (PTM) of PPARγ regulates PPARγ activity or stability and may be a novel way to optimize PPARγ activity with reduced adverse effects. In this review, we will focus on recent advances in PTM of PPARγ and the mechanisms regulating PPARγ function as well as in the development of PPARγ modulators or agonists.
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Affiliation(s)
- Sung Hee Choi
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea.,Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Sung Soo Chung
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea.,Biomedical Research Institute, Seoul National University Hospital, Seoul, South Korea
| | - Kyong Soo Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea.,Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, South Korea
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32
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Qiu F, Tong H, Wang Y, Tao J, Wang H, Chen L. Inhibition of miR-21-5p suppresses high glucose-induced proliferation and angiogenesis of human retinal microvascular endothelial cells by the regulation of AKT and ERK pathways via maspin. Biosci Biotechnol Biochem 2018; 82:1366-1376. [PMID: 29658404 DOI: 10.1080/09168451.2018.1459179] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The aim of the present study is to investigate the role of miR-21-5p in angiogenesis of human retinal microvascular endothelial cells (HRMECs). HRMECs were incubated with 5 mM glucose, 30 mM glucose or 30 mM mannitol for 24 h, 48 h or 72 h. Then, HRMECs exposed to 30 mM glucose were transfected with miR-21-5p inhibitor. We found that high glucose increased the expression of miR-21-5p, VEGF, VEGFR2 and cell proliferation activity. Inhibition of miR-21-5p reduced high glucose-induced proliferation, migration, tube formation of HRMECs, and reversed the decreased expression of maspin as well as the abnormal activation of PI3K/AKT and ERK pathways. Down-regulation of maspin by siRNA significantly increased the activities of PI3K/AKT and ERK pathways. In conclusion, inhibition of miR-21-5p could suppress high glucose-induced proliferation and angiogenesis of HRMECs, and these effects may partly dependent on the regulation of PI3K/AKT and ERK pathways via its target protein maspin.
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Affiliation(s)
- Feng Qiu
- a Department of Ophthalmology , The First Affiliated Hospital of China Medical University , Shenyang , People's Republic of China.,b Department of Ophthalmology , Shenyang Fourth People's Hospital , Shenyang , People's Republic of China
| | - Huijuan Tong
- c Department of Nursing , Shenyang Medical College , Shenyang , People's Republic of China
| | - Yawen Wang
- b Department of Ophthalmology , Shenyang Fourth People's Hospital , Shenyang , People's Republic of China
| | - Jun Tao
- b Department of Ophthalmology , Shenyang Fourth People's Hospital , Shenyang , People's Republic of China
| | - Hailin Wang
- b Department of Ophthalmology , Shenyang Fourth People's Hospital , Shenyang , People's Republic of China
| | - Lei Chen
- a Department of Ophthalmology , The First Affiliated Hospital of China Medical University , Shenyang , People's Republic of China
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The effect of sevoflurane on retinal angiogenesis in a mouse model of oxygen-induced retinopathy. J Anesth 2018; 32:204-210. [PMID: 29464332 DOI: 10.1007/s00540-018-2465-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 02/08/2018] [Indexed: 01/02/2023]
Abstract
BACKGROUND Sevoflurane is commonly used in general anesthesia for premature neonates. The main mechanism of retinopathy of prematurity (ROP) is increased levels of vascular endothelial growth factor (VEGF). For the investigation of sevoflurane's effect on angiogenesis, the angiogenesis and VEGF expression in the retina were measured after administering sevoflurane in an oxygen-induced retinopathy mice model. MATERIALS AND METHODS The mice were divided into the normoxic group (Nc and Ns group; n = 6) and the ROP group (C, Rc, and Rs group; n = 6). Rc group were exposed to 75% oxygen for 5 days beginning on postnatal day (P) 7, and then returned to room air. Age-matched mice in the C group were exposed to room air. To observe angiogenesis of the retina, the mice were sacrificed on P16. The Rs group was exposed to 2 vol% sevoflurane for 2 h on P12, P13, and P14 with 40% oxygen. RESULTS The angiogenic area and the spreading distance of vessels on P4 were statistically decreased in the Ns group, compared to the Nc group. The avascular area on P16 was significantly increased and the expression of VEGF was suppressed in the Rs group compared to the Rc group. CONCLUSIONS Sevoflurane can inhibit retinal angiogenesis via suppressing VEGF expression in an OIR mice model with exposure to relative hypoxia. Nevertheless, it is still difficult to apply the results of this study immediately to humans because of the heterogeneity of responses to sevoflurane.
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Qiu F, Tong H, Wang Y, Tao J, Wang H, Chen L. Recombinant human maspin inhibits high glucose-induced oxidative stress and angiogenesis of human retinal microvascular endothelial cells via PI3K/AKT pathway. Mol Cell Biochem 2018; 446:127-136. [PMID: 29363056 DOI: 10.1007/s11010-018-3280-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 01/16/2018] [Indexed: 12/13/2022]
Abstract
Maspin is known as a tumor suppressor and a potent angiogenesis inhibitor, however, its effects on proliferative diabetic retinopathy (PDR) have not been fully elucidated. This study aimed at evaluating the effects of maspin on high glucose-induced oxidative stress and angiogenesis in human retinal microvascular endothelial cells (HRMECs). Herein, HRMECs were treated with 0.25, 0.5, or 1 µM recombinant human maspin in the presence of 30 mM glucose, and their proliferation, tube formation, and oxidative stress responses were further detected. Our results revealed that maspin inhibited the high glucose-induced proliferation, migration, and tube formation of HRMECs. Maspin also decreased reactive oxygen species, nitric oxide level, and increased glutathione S-transferase activity in HRMECs. Meanwhile, maspin reduced the mRNA and protein levels of hypoxia-inducible factor-1α and vascular endothelial growth factor in high glucose-stimulated cells in a dose-dependent manner. Additionally, the high glucose-induced elevation of phosphorylated phosphoinositide-3-kinase (p-PI3K) and phosphorylated AKT was also suppressed by maspin. In summary, our data suggest that maspin inhibits high glucose-induced proliferation, oxidative stress, and angiogenesis of HRMECs at least by modulating the PI3K/AKT pathway. Maspin may be a potential therapeutic agent for the prevention and treatment of PDR.
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Affiliation(s)
- Feng Qiu
- Department of Ophthalmology, Shenyang Fourth People's Hospital, 20 South Huanghe Avenue, Shenyang, 110031, People's Republic of China.
| | - Huijuan Tong
- Department of Nursing, Shenyang Medical College, Shenyang, 110034, People's Republic of China
| | - Yawen Wang
- Department of Ophthalmology, Shenyang Fourth People's Hospital, 20 South Huanghe Avenue, Shenyang, 110031, People's Republic of China
| | - Jun Tao
- Department of Ophthalmology, Shenyang Fourth People's Hospital, 20 South Huanghe Avenue, Shenyang, 110031, People's Republic of China
| | - Hailin Wang
- Department of Ophthalmology, Shenyang Fourth People's Hospital, 20 South Huanghe Avenue, Shenyang, 110031, People's Republic of China
| | - Lei Chen
- Department of Ophthalmology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, People's Republic of China
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Ahluwalia A, Jones MK, Hoa N, Zhu E, Brzozowski T, Tarnawski AS. Reduced NGF in Gastric Endothelial Cells Is One of the Main Causes of Impaired Angiogenesis in Aging Gastric Mucosa. Cell Mol Gastroenterol Hepatol 2018; 6:199-213. [PMID: 29992182 PMCID: PMC6037903 DOI: 10.1016/j.jcmgh.2018.05.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 05/10/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Aging gastric mucosa has increased susceptibility to injury and delayed healing owing to impaired angiogenesis, but the mechanisms are not fully known. We examined whether impairment of angiogenesis in aging gastric mucosa is caused by deficiency of nerve growth factor (NGF) in gastric endothelial cells (ECs), and whether NGF therapy could reverse this impairment. METHODS In gastric mucosal ECs (GECs) isolated from young and aging rats we examined the following: (1) in vitro angiogenesis, (2) NGF expression, and (3) the effect of NGF treatment on angiogenesis, GEC proliferation and migration, and dependence on serum response factor. In in vivo studies in young and aging rats, we examined NGF expression in gastric mucosa and the effect of NGF treatment on angiogenesis and gastric ulcer healing. To determine human relevance, we examined NGF expression in gastric mucosal biopsy specimens of aging (≥70 y) and young (≤40 y) individuals. RESULTS In cultured aging GECs, NGF expression and angiogenesis were reduced significantly by 3.0-fold and 4.1-fold vs young GECs. NGF therapy reversed impairment of angiogenesis in aging GECs, and serum response factor silencing completely abolished this response. In gastric mucosa of aging rats, NGF expression in GECs was reduced significantly vs young rats. In aging rats, local NGF treatment significantly increased angiogenesis and accelerated gastric ulcer healing. In aging human subjects, NGF expression in ECs of gastric mucosal vessels was 5.5-fold reduced vs young individuals. CONCLUSIONS NGF deficiency in ECs is a key mechanism underlying impaired angiogenesis and delayed ulcer healing in aging gastric mucosa. Local NGF therapy can reverse these impairments.
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Key Words
- Aging
- Akt, serine threonine kinase signaling protein
- Angiogenesis
- BrdU, bromodeoxyuridine
- EC, endothelial cell
- Endothelial Cells
- FITC, fluorescein isothiocyanate
- GEC, gastric mucosal microvascular endothelial cells isolated from rats
- GU, gastric ulcer
- Gene Therapy
- LV-GFP, lentiviral green fluorescent protein
- LV-NGF, lentiviral nerve growth factor
- NGF, nerve growth factor
- NSAID, nonsteroidal anti-inflammatory drug
- Nerve Growth Factor
- PBS, phosphate-buffered saline
- PCNA, proliferating cell nuclear antigen
- PCR, polymerase chain reaction
- PI3, phosphoinositide-3
- SRF, serum response factor
- Ulcer Healing
- VEGF, vascular endothelial growth factor
- mRNA, messenger RNA
- mTOR, mammalian target of rapamycin
- siRNA, small interfering RNA
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Affiliation(s)
- Amrita Ahluwalia
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System, Long Beach, California
| | - Michael K. Jones
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System, Long Beach, California
- Department of Medicine, University of California, Irvine, California
| | - Neil Hoa
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System, Long Beach, California
| | - Ercheng Zhu
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System, Long Beach, California
| | - Tomasz Brzozowski
- Department of Physiology, Jagiellonian University Medical College, Krakow, Poland
| | - Andrzej S. Tarnawski
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System, Long Beach, California
- Department of Medicine, University of California, Irvine, California
- Correspondence Address correspondence to: Andrzej S. Tarnawski, MD, PhD, AGAF, FACG, Veterans Affairs Long Beach Healthcare System, 5901 East 7th Street, 09/151, Long Beach, California 90822. fax: (562) 826-5675.
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Liu YR, Cai QY, Gao YG, Luan X, Guan YY, Lu Q, Sun P, Zhao M, Fang C. Alantolactone, a sesquiterpene lactone, inhibits breast cancer growth by antiangiogenic activity via blocking VEGFR2 signaling. Phytother Res 2017; 32:643-650. [PMID: 29210118 DOI: 10.1002/ptr.6004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 10/08/2017] [Accepted: 11/08/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Ya-Rong Liu
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Department of Pharmacology, Institute of Medical Sciences; Shanghai Jiao Tong University School of Medicine (SJTU-SM); 280 South Chongqing Road Shanghai 200025 China
- Department of Pharmacy; Shanghai University of Medicine & Health Sciences; 279 Zhouzhu Road Shanghai 201318 China
| | - Qin-Yi Cai
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Department of Pharmacology, Institute of Medical Sciences; Shanghai Jiao Tong University School of Medicine (SJTU-SM); 280 South Chongqing Road Shanghai 200025 China
| | - Yun-Ge Gao
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Department of Pharmacology, Institute of Medical Sciences; Shanghai Jiao Tong University School of Medicine (SJTU-SM); 280 South Chongqing Road Shanghai 200025 China
| | - Xin Luan
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Department of Pharmacology, Institute of Medical Sciences; Shanghai Jiao Tong University School of Medicine (SJTU-SM); 280 South Chongqing Road Shanghai 200025 China
| | - Ying-Yun Guan
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Department of Pharmacology, Institute of Medical Sciences; Shanghai Jiao Tong University School of Medicine (SJTU-SM); 280 South Chongqing Road Shanghai 200025 China
| | - Qin Lu
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Department of Pharmacology, Institute of Medical Sciences; Shanghai Jiao Tong University School of Medicine (SJTU-SM); 280 South Chongqing Road Shanghai 200025 China
| | - Peng Sun
- Department of General Surgery; Shanghai Tongren Hospital; SJTU-SM, 1111 Xianxia Road Shanghai 200336 China
| | - Mei Zhao
- Department of Pharmacy; Shanghai University of Medicine & Health Sciences; 279 Zhouzhu Road Shanghai 201318 China
| | - Chao Fang
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Department of Pharmacology, Institute of Medical Sciences; Shanghai Jiao Tong University School of Medicine (SJTU-SM); 280 South Chongqing Road Shanghai 200025 China
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Ahluwalia A, Jones MK, Hoa N, Tarnawski AS. NGF protects endothelial cells from indomethacin-induced injury through activation of mitochondria and upregulation of IGF-1. Cell Signal 2017; 40:22-29. [PMID: 28843696 DOI: 10.1016/j.cellsig.2017.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/02/2017] [Accepted: 08/20/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND/AIMS Endothelial cells (ECs) lining blood vessels are critical for delivery of oxygen and nutrients to all tissues and organs and play a crucial role in the regeneration of blood vessel following tissue injury. ECs are also major targets of injury by a variety of noxious factors [e.g., ethanol and nonsteroidal anti-inflammatory drugs (NSAIDs) such as aspirin, indomethacin, diclofenac], especially in gastric mucosa that has direct exposure to these agents. In this study, we investigated whether nerve growth factor (NGF) can protect gastric microvascular ECs (GECs) from injury by indomethacin (INDO) and the mechanisms involved. METHODS GECs were isolated from rat gastric mucosa and pre-treated with either vehicle or NGF (100ng/ml) for 30min to 4h followed by treatment with vehicle or 0.25mM INDO for 4h. STUDIES 1) cell viability using Calcein AM live cell tracking dye, 2) mitochondrial structure and function using MitoTracker, molecular probe that stains mitochondria in live cells in a manner dependent on mitochondrial membrane potential (MMP), 3) in vitro angiogenesis - endothelial tube formation on Matrigel, 4) expression and subcellular localization of NGF receptor, TrkA, and 5) expression of IGF-1 protein. RESULTS Treatment with INDO reduced GEC viability and in vitro angiogenesis and induced mitochondrial injury and MMP depolarization. NGF pre-treatment protected GECs from INDO-induced injury preventing both INDO-induced MMP depolarization and reduced in vitro angiogenesis. The NGF high affinity receptor, TrkA, was localized in GECs to both cell membrane and mitochondria. NGF treatment of GECs also resulted in increased IGF-1 protein expression. CONCLUSIONS 1) NGF protects GECs against IND-induced injury. 2) Mitochondria are major targets of both INDO-induced injury and NGF afforded protection of GECs. 3) TrkA expression in the mitochondria of GECs indicates that the protection afforded by NGF is partly mediated by its direct action on mitochondria. 4) NGF prevents MMP depolarization and increases expression of IGF-1 protein in GECs. These studies indicate that NGF may play a protective role against injury to GECs; and, that maintenance of mitochondrial structure and function is one of the mechanisms.
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Affiliation(s)
- Amrita Ahluwalia
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System (VALBHS), Long Beach, CA, USA
| | - Michael K Jones
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System (VALBHS), Long Beach, CA, USA; Department of Medicine, University of California, Irvine, CA, USA
| | - Neil Hoa
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System (VALBHS), Long Beach, CA, USA
| | - Andrzej S Tarnawski
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System (VALBHS), Long Beach, CA, USA; Department of Medicine, University of California, Irvine, CA, USA.
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Ku YH, Cho BJ, Kim MJ, Lim S, Park YJ, Jang HC, Choi SH. Rosiglitazone increases endothelial cell migration and vascular permeability through Akt phosphorylation. BMC Pharmacol Toxicol 2017; 18:62. [PMID: 28854981 PMCID: PMC5577739 DOI: 10.1186/s40360-017-0169-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 08/11/2017] [Indexed: 02/06/2023] Open
Abstract
Background Thiazolidinediones (TZDs), peroxisome proliferator-activated receptor-γ (PPAR-γ) agonists, exhibit anti-inflammatory and antioxidant properties and inhibit endothelial inflammation and dysfunction, which is anti-atherogenic. However, fluid retention, which may lead to congestive heart failure and peripheral edema, is also a concern, which may result from endothelial cell leakage. In the current study, we examined the effects of PPAR-γ agonists on vascular endothelial cell migration and permeability in order to determine its underlying mechanisms. Methods We used rosiglitazone and conducted cell migration assay and permeability assay using HUVEC cells and measured vascular permeability and leakage in male C57BL/6 mice. Results Rosiglitazone significantly promoted endothelial cell migration and induced permeability via activation of phosphatidylinositol-3-kinase (PI3K) – Akt or protein kinase C (PKC)β. In addition, rosiglitazone increased vascular endothelial growth factor (VEGF) expression and suppressed expression of tight junction proteins (JAM-A and ZO-1), which might promote neovascularization and vascular leakage. These phenomena were reduced by Akt inhibition. Conclusions Vascular endothelial cell migration and permeability change through Akt phosphorylation might be a mechanism of induced fluid retention and peripheral tissue edema by TZD.
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Affiliation(s)
- Yun Hyi Ku
- Department of Internal Medicine, Korea Cancer Center Hospital, Seoul, South Korea
| | - Bong-Jun Cho
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Min Joo Kim
- Department of Internal Medicine, Korea Cancer Center Hospital, Seoul, South Korea
| | - Soo Lim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Young Joo Park
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Hak C Jang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Sung Hee Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea. .,, 166 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-707, Republic of Korea.
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Liu G, Wu H, Chen L, Xu J, Wang M, Li D, Lu P. Effects of interleukin-17 on human retinal vascular endothelial cell capillary tube formation in vitro. Mol Med Rep 2017; 16:865-872. [PMID: 28560397 DOI: 10.3892/mmr.2017.6623] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 03/10/2017] [Indexed: 11/06/2022] Open
Abstract
The present study aimed to investigate the effect of and mechanism underlying interleukin (IL)‑17 on human retinal vascular endothelial cell (HREC) capillary tube formation in vitro. The expression of IL‑17 receptor (IL‑17R) in human HRECs was quantified using reverse transcriptase‑polymerase chain reaction (RT‑PCR) and western blot analyses. The roles of IL‑17 in HREC migration and capillary tube formation were detected using a wound scratching assay and three‑dimensional Matrigel assay, respectively, in vitro. HREC proliferation was examined using a cell counting kit‑8 assay with administration of serial doses of IL‑17. The effects of IL‑17 on the expression of vascular endothelial growth factor (VEGF), intercellular cell adhesion molecule (ICAM)‑1, IL‑6 and IL‑8 in HRECs were evaluated using RT‑PCR and western blot analyses. The results revealed that the HRECs expressed IL‑17R, and the number of intact capillary tubes formed by HRECs in the presence of IL‑17 was markedly higher, compared with that in the blank control group. The wound scratching assay showed that the numbers of migrated HRECs stimulated with IL‑17 at concentrations of 100 or 500 ng/ml were significantly higher, compared with the number in the control group. The RT‑PCR and western blot analyses showed that IL‑17 significantly promoted the expression of VEGF, ICAM‑1, IL‑6 and IL‑8 by the HRECs. The proliferation of HRECs in the presence of IL‑17 was also significantly increased. Therefore, IL‑17 increased HREC capillary tube formation through promoting HREC migration, proliferation, and expression levels of VEGF, ICAM‑1, IL‑6 and IL-8.
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Affiliation(s)
- Gaoqin Liu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Hongya Wu
- Jiangsu Clinical Immunology Institute, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Lei Chen
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Jing Xu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Mengjiao Wang
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Dan Li
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Peirong Lu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
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Yang WZ, Yang J, Xue LP, Xiao LB, Li Y. MiR-126 overexpression inhibits high glucose-induced migration and tube formation of rhesus macaque choroid-retinal endothelial cells by obstructing VEGFA and PIK3R2. J Diabetes Complications 2017; 31:653-663. [PMID: 28131600 DOI: 10.1016/j.jdiacomp.2016.12.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 11/27/2016] [Accepted: 12/19/2016] [Indexed: 12/26/2022]
Abstract
AIM The aims of this study are to investigate the relative regulation between miR-126 and VEGF/PI3K/AKT signaling pathway in retinal vascular endothelial cells. METHODS Rhesus macaque choroid-retinal endothelial cell line (RF/6A) cells were cultured in high glucose to imitate the conditions occurring in DR. First, we detected the expression of miR-126, VEGFA and PIK3R2 in RF/6A cells on the condition of high glucose by q-PCR and western blot. Then, after addition of miR-126 mimics and miR-126 inhibitor, we investigated the function of miR-126 in RF/6A cells by scratch wound, Transwell migration and tube formation assays, and the effect of miR-126 on the expression of VEGFA, PIK3R2 and AKT. Moreover, bioinformatics analysis and luciferase array were used to confirm the direct or specific regulation of miR-126 to VEGFA or PIK3R2. RESULTS Here, first, we found that high glucose could induce the decrease of miR-126 and the increase of VEGFA and PIK3R2 in RF/6A. Then, by scratch wound, Transwell migration and tube formation assays, we found that miR-126 overexpression could inhibit the migration and sprouting of RF/6A cells induced by high glucose, while knockdown of miR-126 led to the opposite results. Moreover, overexpression of miR-126 inhibited the increased expression of VEGFA, PIK3R2, SDF-1α, VCAM-1, and SPRED1, and the activation of AKT1 induced by high glucose and miR-126 inhibitor caused the opposite results which were determined by q-PCR and western blot. In addition, by luciferase assay, we found that miR-126 could directly negatively regulate VEGFA and PIK3R2. CONCLUSION Our results suggest that miR-126 overexpression inhibits the migration and sprouting of RF/6A cells induced by high glucose which might possibly be by blocking VEGFA and PIK3R2 in the VEGF/PI3K/AKT signaling pathway.
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Affiliation(s)
- Wen-Zhi Yang
- Department of Ophthalmology, Fourth Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650021, China
| | - Jin Yang
- Department of Osteology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - Li-Ping Xue
- Department of Ophthalmology, Fourth Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650021, China
| | - Li-Bo Xiao
- Department of Ophthalmology, Fourth Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650021, China
| | - Yan Li
- Department of Ophthalmology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China.
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Camaré C, Pucelle M, Nègre-Salvayre A, Salvayre R. Angiogenesis in the atherosclerotic plaque. Redox Biol 2017; 12:18-34. [PMID: 28212521 PMCID: PMC5312547 DOI: 10.1016/j.redox.2017.01.007] [Citation(s) in RCA: 255] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/04/2017] [Accepted: 01/05/2017] [Indexed: 12/12/2022] Open
Abstract
Atherosclerosis is a multifocal alteration of the vascular wall of medium and large arteries characterized by a local accumulation of cholesterol and non-resolving inflammation. Atherothrombotic complications are the leading cause of disability and mortality in western countries. Neovascularization in atherosclerotic lesions plays a major role in plaque growth and instability. The angiogenic process is mediated by classical angiogenic factors and by additional factors specific to atherosclerotic angiogenesis. In addition to its role in plaque progression, neovascularization may take part in plaque destabilization and thromboembolic events. Anti-angiogenic agents are effective to reduce atherosclerosis progression in various animal models. However, clinical trials with anti-angiogenic drugs, mainly anti-VEGF/VEGFR, used in anti-cancer therapy show cardiovascular adverse effects, and require additional investigations.
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Affiliation(s)
- Caroline Camaré
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France; Université Paul Sabatier Toulouse III, Faculty of Medicine, Biochemistry Departement, Toulouse, France; CHU Toulouse, Rangueil, 1 avenue Jean Poulhès, TSA 50032, 31059 Toulouse Cedex 9, France
| | - Mélanie Pucelle
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France
| | - Anne Nègre-Salvayre
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France.
| | - Robert Salvayre
- INSERM - I2MC, U-1048, 1 avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France; Université Paul Sabatier Toulouse III, Faculty of Medicine, Biochemistry Departement, Toulouse, France; CHU Toulouse, Rangueil, 1 avenue Jean Poulhès, TSA 50032, 31059 Toulouse Cedex 9, France.
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Sandhu K, Mamas M, Butler R. Endothelial progenitor cells: Exploring the pleiotropic effects of statins. World J Cardiol 2017; 9:1-13. [PMID: 28163831 PMCID: PMC5253189 DOI: 10.4330/wjc.v9.i1.1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/29/2016] [Accepted: 11/02/2016] [Indexed: 02/07/2023] Open
Abstract
Statins have become a cornerstone of risk modification for ischaemic heart disease patients. A number of studies have shown that they are effective and safe. However studies have observed an early benefit in terms of a reduction in recurrent infarct and or death after a myocardial infarction, prior to any significant change in lipid profile. Therefore, pleiotropic mechanisms, other than lowering lipid profile alone, must account for this effect. One such proposed pleiotropic mechanism is the ability of statins to augment both number and function of endothelial progenitor cells. The ability to augment repair and maintenance of a functioning endothelium may have profound beneficial effect on vascular repair and potentially a positive impact on clinical outcomes in patients with cardiovascular disease. The following literature review will discuss issues surrounding endothelial progenitor cell (EPC) identification, role in vascular repair, factors affecting EPC numbers, the role of statins in current medical practice and their effects on EPC number.
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Park JK, Peng H, Yang W, Katsnelson J, Volpert O, Lavker RM. miR-184 exhibits angiostatic properties via regulation of Akt and VEGF signaling pathways. FASEB J 2017; 31:256-265. [PMID: 27825105 PMCID: PMC5161520 DOI: 10.1096/fj.201600746r] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/22/2016] [Indexed: 11/11/2022]
Abstract
Corneal avascularity is critical for achieving transparency necessary for proper transmission of light to the lens and visual acuity. Although much is known about angiogenesis and angiostasis, the precise regulation of these processes in the cornea is unclear. MicroRNA (miR)-184, the most abundant corneal epithelial miRNA, has been suggested to function in corneal angiostasis by altering VEGF signaling; however, the mechanism(s) underlying this regulation have not been addressed. Using a combination of in vitro and in vivo assays to evaluate angiogenesis, we demonstrated that human limbal epithelial keratinocytes (HLEKs) engineered to overexpress miR-184 secreted lower amounts of angiogenic mitogens. Human dermal microvascular cells exposed to conditioned medium from miR-184-overexpressing HLEKs were less proliferative and failed to seal linear scratch wounds. The in vivo Matrigel plug assay showed that conditioned medium from miR-184-expressing HLEKs elicited a lesser degree of neovascularization compared with controls. We found that miR-184 directly targets and represses the proangiogenic factors, friend of Gata 2 (FOG2), platelet-derived growth factor (PDGF)-β, and phosphatidic acid phosphatase 2b (PPAP2B). FOG2 regulates VEGF expression, whereas PDGF-β and PPAP2B regulate Akt activity. By attenuating both VEGF and Akt signaling, miR-184 acts as a broad-spectrum negative regulator of corneal angiogenesis.-Park, J. K., Peng, H., Yang, W., Katsnelson, J., Volpert, O., Lavker, R. M. miR-184 exhibits angiostatic properties via regulation of Akt and VEGF signaling pathways.
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Affiliation(s)
- Jong Kook Park
- Department of Dermatology Northwestern University, Chicago, Illinois, USA
| | - Han Peng
- Department of Dermatology Northwestern University, Chicago, Illinois, USA
| | - Wending Yang
- Department of Dermatology Northwestern University, Chicago, Illinois, USA
| | - Julia Katsnelson
- Department of Dermatology, New York Metropolitan Hospital, New York, New York, USA; and
| | - Olga Volpert
- Department of Urology, The Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Robert M Lavker
- Department of Dermatology Northwestern University, Chicago, Illinois, USA;
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Hayashida R, Kondo K, Morita S, Unno K, Shintani S, Shimizu Y, Calvert JW, Shibata R, Murohara T. Diallyl Trisulfide Augments Ischemia-Induced Angiogenesis via an Endothelial Nitric Oxide Synthase-Dependent Mechanism. Circ J 2017; 81:870-878. [DOI: 10.1253/circj.cj-16-1097] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ryo Hayashida
- Department of Cardiology, Nagoya University Graduate School of Medicine
| | - Kazuhisa Kondo
- Department of Cardiology, Nagoya University Graduate School of Medicine
| | - Sumio Morita
- Department of Cardiology, Nagoya University Graduate School of Medicine
| | - Kazumasa Unno
- Department of Cardiology, Nagoya University Graduate School of Medicine
| | - Satoshi Shintani
- Department of Cardiology, Nagoya University Graduate School of Medicine
| | - Yuuki Shimizu
- Department of Cardiology, Nagoya University Graduate School of Medicine
- Division of Cardiothoracic Surgery, Department of Surgery, Emory University School of Medicine
| | - John W. Calvert
- Division of Cardiothoracic Surgery, Department of Surgery, Emory University School of Medicine
| | - Rei Shibata
- Department of Cardiology, Nagoya University Graduate School of Medicine
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine
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Abstract
The concept of pericyte has been changing over years. This cell type was believed to possess only a function of trophic support to endothelial cells and to maintain vasculature stabilization. In the last years, the discovery of multipotent ability of perivascular populations led to the concept of vessel/wall niche. Likewise, several perivascular populations have been identified in animal and human bone marrow. In this review, we provide an overview on bone marrow perivascular population, their cross-talk with other niche components, relationship with bone marrow stromal stem cells, and similarities and differences with the perivascular population of the vessel/wall niche. Finally, we focus on the regenerative potential of these cells and the forthcoming challenges related to their use as cell therapy products.
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Affiliation(s)
- Giuseppe Mangialardi
- Division of Experimental Cardiovascular Medicine, Bristol Heart Institute, University of Bristol, UK
| | - Andrea Cordaro
- Division of Experimental Cardiovascular Medicine, Bristol Heart Institute, University of Bristol, UK
| | - Paolo Madeddu
- Division of Experimental Cardiovascular Medicine, Bristol Heart Institute, University of Bristol, UK
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Ahluwalia A, Jones MK, Brzozowski T, Tarnawski AS. Nerve growth factor is critical requirement for in vitro angiogenesis in gastric endothelial cells. Am J Physiol Gastrointest Liver Physiol 2016; 311:G981-G987. [PMID: 27742705 DOI: 10.1152/ajpgi.00334.2016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 10/10/2016] [Indexed: 02/06/2023]
Abstract
Angiogenesis is critical for the healing of gastric mucosal injury and is considered to be primarily regulated by vascular endothelial growth factor (VEGF), the fundamental proangiogenic factor. The role of nerve growth factor (NGF) in gastric angiogenesis is unknown. We examined the expression of NGF and its TrkA receptor in endothelial cells (ECs) isolated from gastric mucosa of rats (GMECs), the effect of NGF treatment on in vitro angiogenesis in GMECs, and, the mechanisms underlying NGF's proangiogenic actions. Isolated GMECs from Fisher rats were treated with vehicle, NGF (10-1,000 ng/ml), VEGF (20 ng/ml), or NGF+VEGF. To determine whether and to what extent NGF is critical for angiogenesis in GMECs, we silenced NGF expression using specific siRNA and examined in vitro angiogenesis with and without treatment with exogenous NGF and/or VEGF. Treatment of GMECs with NGF significantly increased in vitro angiogenesis similar to that seen in GMECs treated with VEGF. Silencing of NGF in GMECs abolished angiogenesis, and this effect was reversed only by exogenous NGF but not VEGF, which indicates a direct proangiogenic action of NGF on GMECs that is, at least in part, distinct and independent of VEGF. NGF's proangiogenic action on GMECs was mediated via PI3-K/Akt signaling. This study showed for the first time that gastric mucosal ECs express NGF and its receptor TrkA and that NGF is critical for angiogenesis in these cells.
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Affiliation(s)
- Amrita Ahluwalia
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System, Long Beach, California, and the Department of Medicine, University of California, Irvine, California; and
| | - Michael K Jones
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System, Long Beach, California, and the Department of Medicine, University of California, Irvine, California; and
| | | | - Andrzej S Tarnawski
- Medical and Research Services, Veterans Affairs Long Beach Healthcare System, Long Beach, California, and the Department of Medicine, University of California, Irvine, California; and
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47
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Regulation of retinal angiogenesis by phospholipase C-β3 signaling pathway. Exp Mol Med 2016; 48:e240. [PMID: 27311705 PMCID: PMC4929692 DOI: 10.1038/emm.2016.39] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 01/26/2016] [Accepted: 01/27/2016] [Indexed: 12/12/2022] Open
Abstract
Angiogenesis has an essential role in many pathophysiologies. Here, we show that phospholipase C-β3 (PLC-β3) isoform regulates endothelial cell function and retinal angiogenesis. Silencing of PLC-β3 in human umbilical vein endothelial cells (HUVECs) significantly delayed proliferation, migration and capillary-like tube formation. In addition, mice lacking PLC-β3 showed impaired retinal angiogenesis with delayed endothelial proliferation, reduced endothelial cell activation, abnormal vessel formation and hemorrhage. Finally, tumor formation was significantly reduced in mice lacking PLC-β3 and showed irregular size and shape of blood vessels. These results suggest that regulation of endothelial function by PLC-β3 may contribute to angiogenesis.
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48
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Miftakhova R, Hedblom A, Batkiewicz L, Anagnosaki L, Zhang Y, Sjölander A, Wingren AG, Wolgemuth DJ, Persson JL. Cyclin A1 regulates the interactions between mouse haematopoietic stem and progenitor cells and their niches. Cell Cycle 2016; 14:1948-60. [PMID: 25785996 DOI: 10.1080/15384101.2015.1026513] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
It remains poorly understood how the haematopoietic stem/progenitor cells (HSPC) are attracted to their niches and the functional consequences of such interaction. In the present study, we show that the cell cycle regulator cyclin A1 in association with vascular endothelial growth factor receptor 1 (VEGFR1), is required for HSPC and their niches to maintain their function and proper interaction. In the absence of cyclin A1, the HSPC in the BM are increased in their frequency and display an increased migratory and homing ability. Concomitantly, the ability of the endosteal and central BM niche zones to attract and home the wild-type HSPC is significantly reduced in cyclin A1-null mice as compared to the wild-type controls. The impaired proliferation and homing of HSPC in the BM of cyclin A1-null mice are attributed to the increased density of microvessels in the endosteal and central BM niche zones, which is associated with the increased VEGFR1 expression. Thus, modulation of cyclin A1 and VEGFR1 in HSPC and their niches may provide new insights into therapeutic approaches.
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Affiliation(s)
- Regina Miftakhova
- a Division of Experimental Cancer Research; Department of Translational Medicine; Clinical Research Center; Lund University ; Malmö , Sweden
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Park H, Lee S, Shrestha P, Kim J, Park JA, Ko Y, Ban YH, Park DY, Ha SJ, Koh GY, Hong VS, Mochizuki N, Kim YM, Lee W, Kwon YG. AMIGO2, a novel membrane anchor of PDK1, controls cell survival and angiogenesis via Akt activation. J Cell Biol 2016; 211:619-37. [PMID: 26553931 PMCID: PMC4639856 DOI: 10.1083/jcb.201503113] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
AMIGO2 is a novel scaffold protein that regulates PDK1 membrane localization and Akt activation in endothelial cells, and inhibition of the interaction between PDK1–AMIGO2 results in impaired neovascularization, pathological angiogenesis, and tumor angiogenesis. The phosphoinositide 3-kinase–Akt signaling pathway is essential to many biological processes, including cell proliferation, survival, metabolism, and angiogenesis, under pathophysiological conditions. Although 3-phosphoinositide–dependent kinase 1 (PDK1) is a primary activator of Akt at the plasma membrane, the optimal activation mechanism remains unclear. We report that adhesion molecule with IgG-like domain 2 (AMIGO2) is a novel scaffold protein that regulates PDK1 membrane localization and Akt activation. Loss of AMIGO2 in endothelial cells (ECs) led to apoptosis and inhibition of angiogenesis with Akt inactivation. Amino acid residues 465–474 in AMIGO2 directly bind to the PDK1 pleckstrin homology domain. A synthetic peptide containing the AMIGO2 465–474 residues abrogated the AMIGO2–PDK1 interaction and Akt activation. Moreover, it effectively suppressed pathological angiogenesis in murine tumor and oxygen-induced retinopathy models. These results demonstrate that AMIGO2 is an important regulator of the PDK1–Akt pathway in ECs and suggest that interference of the PDK1–AMIGO2 interaction might be a novel pharmaceutical target for designing an Akt pathway inhibitor.
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Affiliation(s)
- Hyojin Park
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Sungwoon Lee
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Pravesh Shrestha
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Jihye Kim
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Jeong Ae Park
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Yeongrim Ko
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Young Ho Ban
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Dae-Young Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Sang-Jun Ha
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Gou Young Koh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Victor Sukbong Hong
- College of Natural Sciences, Keimyung University, Daegu 42601, Republic of Korea
| | - Naoki Mochizuki
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 565-8565, Japan
| | - Young-Myeong Kim
- Vascular System Research Center, Kangwon National University, Chuncheon, Kangwon 24341, Republic of Korea
| | - Weontae Lee
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Young-Guen Kwon
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
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50
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Yang CJ, Yang J, Yang J, Fan ZX. Thioredoxin-1 (Trx1) engineered mesenchymal stem cell therapy is a promising feasible therapeutic approach for myocardial infarction. Int J Cardiol 2015; 206:169-70. [PMID: 26527187 DOI: 10.1016/j.ijcard.2015.10.150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 10/18/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Chao-Jun Yang
- Department of Cardiology, the First College of Clinical Medical Sciences, China Three Gorges University, Yichang 443000, Hubei Province, China; Institute of Cardiovascular Diseases, China Three Gorges University, Yichang 443000, Hubei Province, China
| | - Jun Yang
- Department of Cardiology, the First College of Clinical Medical Sciences, China Three Gorges University, Yichang 443000, Hubei Province, China; Institute of Cardiovascular Diseases, China Three Gorges University, Yichang 443000, Hubei Province, China.
| | - Jian Yang
- Department of Cardiology, the First College of Clinical Medical Sciences, China Three Gorges University, Yichang 443000, Hubei Province, China; Institute of Cardiovascular Diseases, China Three Gorges University, Yichang 443000, Hubei Province, China
| | - Zhi-Xing Fan
- Department of Cardiology, the First College of Clinical Medical Sciences, China Three Gorges University, Yichang 443000, Hubei Province, China; Institute of Cardiovascular Diseases, China Three Gorges University, Yichang 443000, Hubei Province, China
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