1
|
Oliveira VQ, Santos LC, Teixeira SC, Correia TML, Andrade LOSB, Gimenes SNC, Colombini M, Marques LM, Jiménez-Charris E, Freitas-de-Sousa LA, Silva MJB, Magalhães Gusmão ACMD, Ferro EAV, Clissa PB, Melo Rodrigues VD, Lopes DS. Antiangiogenic properties of BthMP, a P-I metalloproteinase from Bothrops moojeni snake venom by VEGF pathway in endothelial cells. Biochem Biophys Res Commun 2024; 706:149748. [PMID: 38460450 DOI: 10.1016/j.bbrc.2024.149748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/15/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024]
Abstract
Angiogenesis is a process that is controlled by a delicate combination of proangiogenic and antiangiogenic molecules and can be disrupted in various illnesses, including cancer. Non-cancerous diseases can also have an abnormal or insufficient vascular growth, inflammation and hypoxia, which exacerbate angiogenesis. These conditions include atherosclerosis, psoriasis, endometriosis, asthma, obesity and AIDS. Based on that, the present work assessed the in vitro and ex vivo antiangiogenic properties stemming from BthMP, a P-I metalloproteinase from Bothrops moojeni snake venom, via the VEGF pathway. BthMP at a concentration of 5 and 40 μg/mL showed no toxicity to endothelial cells (HUVEC) in the MTT assay and was not able to induce necrosis and colony proliferation. Interestingly, BthMP inhibited adhesion, migration and invasion of HUVECs in Matrigel and arrested in vitro angiogenesis by reducing the average number of nodules in toxin-treated cells by 9.6 and 17.32 at 5 and 40 μg/mL, respectively, and the number of tubules by 15.9 at 5 μg/mL and 21.6 at 40 μg/mL in a VEGF-dependent way, an essential proangiogenic property. Furthermore, BthMP inhibited the occurrence of the angiogenic process in an ex vivo aortic ring test by decreasing new vessel formation by 52% at 5 μg/mL and by 66% at 40 μg/mL and by increasing the expression of an antiangiogenic gene, SFLT-1, and decreasing the expression of the proangiogenic genes VEGFA and ANGPT-1. Finally, this toxin reduces the production of nitric oxide, a marker that promotes angiogenesis and VEGF modulation, and decreases the protein expression of VEGFA in the supernatant of the HUVEC culture by about 30 %. These results suggest that BthMP has a promising antiangiogenic property and proves to be a biotechnological mechanism for understanding the antiangiogenic responses induced by snake venom metalloproteinases, which could be applied to a variety of diseases that exhibit an imbalance of angiogenesis mechanisms.
Collapse
Affiliation(s)
- Vinícius Queiroz Oliveira
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil
| | - Luísa Carregosa Santos
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil
| | - Samuel Cota Teixeira
- Department of Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil.
| | | | | | | | - Mônica Colombini
- Laboratory of Immunopathology, Institute of Butantan, São Paulo, SP, Brazil
| | - Lucas Miranda Marques
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil
| | | | | | - Marcelo José Barbosa Silva
- Department of Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | | | - Eloisa Amália Vieira Ferro
- Department of Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | | | - Veridiana de Melo Rodrigues
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlandia (UFU), Uberlândia-MG, Brazil
| | - Daiana Silva Lopes
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil.
| |
Collapse
|
2
|
Zhang R, Yao Y, Gao H, Hu X. Mechanisms of angiogenesis in tumour. Front Oncol 2024; 14:1359069. [PMID: 38590656 PMCID: PMC10999665 DOI: 10.3389/fonc.2024.1359069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/11/2024] [Indexed: 04/10/2024] Open
Abstract
Angiogenesis is essential for tumour growth and metastasis. Antiangiogenic factor-targeting drugs have been approved as first line agents in a variety of oncology treatments. Clinical drugs frequently target the VEGF signalling pathway during sprouting angiogenesis. Accumulating evidence suggests that tumours can evade antiangiogenic therapy through other angiogenesis mechanisms in addition to the vascular sprouting mechanism involving endothelial cells. These mechanisms include (1) sprouting angiogenesis, (2) vasculogenic mimicry, (3) vessel intussusception, (4) vascular co-option, (5) cancer stem cell-derived angiogenesis, and (6) bone marrow-derived angiogenesis. Other non-sprouting angiogenic mechanisms are not entirely dependent on the VEGF signalling pathway. In clinical practice, the conversion of vascular mechanisms is closely related to the enhancement of tumour drug resistance, which often leads to clinical treatment failure. This article summarizes recent studies on six processes of tumour angiogenesis and provides suggestions for developing more effective techniques to improve the efficacy of antiangiogenic treatment.
Collapse
Affiliation(s)
| | | | | | - Xin Hu
- China–Japan Union Hospital of Jilin University, Jilin University, Changchun, China
| |
Collapse
|
3
|
Guo B, Yu Y, Wang M, Li R, He X, Tang S, Liu Q, Mao Y. Targeting the JAK2/STAT3 signaling pathway with natural plants and phytochemical ingredients: A novel therapeutic method for combatting cardiovascular diseases. Biomed Pharmacother 2024; 172:116313. [PMID: 38377736 DOI: 10.1016/j.biopha.2024.116313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/13/2024] [Accepted: 02/17/2024] [Indexed: 02/22/2024] Open
Abstract
The aim of this article is to introduce the roles and mechanisms of the JAK2/STAT3 pathway in various cardiovascular diseases, such as myocardial fibrosis, cardiac hypertrophy, atherosclerosis, myocardial infarction, and myocardial ischemiareperfusion. In addition, the effects of phytochemical ingredients and different natural plants, mainly traditional Chinese medicines, on the regulation of different cardiovascular diseases via the JAK2/STAT3 pathway are discussed. Surprisingly, the JAK2 pathway has dual roles in different cardiovascular diseases. Future research should focus on the dual regulatory effects of different phytochemical ingredients and natural plants on JAK2 to pave the way for their use in clinical trials.
Collapse
Affiliation(s)
- Bing Guo
- The Second Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410005, China
| | - Yunfeng Yu
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, China
| | - Min Wang
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, China
| | - Ronghui Li
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, China
| | - Xuan He
- The Second Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410005, China
| | - Siqin Tang
- The Second Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410005, China
| | - Qili Liu
- The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410007, China
| | - Yilin Mao
- The Second Affiliated Hospital of Hunan University of Chinese Medicine, Changsha 410005, China.
| |
Collapse
|
4
|
Hauser PV, Zhao L, Chang HM, Yanagawa N, Hamon M. In Vivo Vascularization Chamber for the Implantation of Embryonic Kidneys. Tissue Eng Part C Methods 2024; 30:63-72. [PMID: 38062758 DOI: 10.1089/ten.tec.2023.0225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024] Open
Abstract
A major obstacle to the implantation of ex vivo engineered tissues is the incorporation of functional vascular supply to support the growth of new tissue and to minimize ischemic injury. Existing prevascularization systems, such as arteriovenous (AV) loop-based systems, require microsurgery, limiting their use to larger animals. We aimed to develop an implantable device that can be prevascularized to enable vascularization of tissues in small rodents, and test its application on the vascularization of embryonic kidneys. Implanting the chamber between the abdominal aorta and the inferior vena cava, we detected endothelial cells and vascular networks after 48 h of implantation. Loading the chamber with collagen I (C), Matrigel (M), or Matrigel + vascular endothelial growth factor) (MV) had a strong influence on vascularization speed: Chambers loaded with C took 7 days to vascularize, 4 days for chambers with M, and 2 days for chambers with MV. Implantation of E12.5 mouse embryonic kidneys into prevascularized chambers (C, MV) was followed with significant growth and ureteric branching over 22 days. In contrast, the growth of kidneys in non-prevascularized chambers was stunted. We concluded that our prevascularized chamber is a valuable tool for vascularizing implanted tissues and tissue-engineered constructs. Further optimization will be necessary to control the directional growth of vascular endothelial cells within the chamber and the vascularization grade. Impact Statement Vascularization of engineered tissue, or organoids, constructs is a major hurdle in tissue engineering. Failure of vascularization is associated with prolonged ischemia time and potential tissue damage due to hypoxic effects. The method presented, demonstrates the use of a novel chamber that allows rapid vascularization of native and engineered tissues. We hope that this technology helps to stimulate research in the field of tissue vascularization and enables researchers to generate larger engineered vascularized tissues.
Collapse
Affiliation(s)
- Peter Viktor Hauser
- Division of Research, Renal Regeneration Laboratory, VAGLAHS at Sepulveda, North Hills, California, USA
- Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California, USA
| | - Lifu Zhao
- Division of Research, Renal Regeneration Laboratory, VAGLAHS at Sepulveda, North Hills, California, USA
| | - Hsiao-Min Chang
- Division of Research, Renal Regeneration Laboratory, VAGLAHS at Sepulveda, North Hills, California, USA
- Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California, USA
| | - Norimoto Yanagawa
- Division of Research, Renal Regeneration Laboratory, VAGLAHS at Sepulveda, North Hills, California, USA
- Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California, USA
| | - Morgan Hamon
- Division of Research, Renal Regeneration Laboratory, VAGLAHS at Sepulveda, North Hills, California, USA
- Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California, USA
| |
Collapse
|
5
|
Wang D, Qi M, Zhao H, Wu H, Chen H, Lan Y, Wang Y, Jiang Y, Wang J. Interventional effect of processing temperature on anti-angiogenesis of Coptis chinensis and screening of active components by UPLC-MS/MS on quail chick chorioallantoic membrane model. JOURNAL OF ETHNOPHARMACOLOGY 2023; 305:116014. [PMID: 36581161 DOI: 10.1016/j.jep.2022.116014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/16/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Coptis chinensis Franch. (CC), as a commonly used heat-clearing and toxin-resolving traditional Chinese herbal medicine, has gained increased attention for its anti-tumor activity. However, little is known about the anti-tumor angiogenesis effect of CC and its possible bioactive components. Also, it has been shown that temperature affects the quality of CC, albeit whether and how it affects the anti-angiogenic activity of CC is currently unknown. AIM OF THE STUDY To determine the processing temperatures (40, 60, 80, 120, 140, 150, 160 and 200 °C) at which CC has the strongest anti-angiogenic effect and speculate the possible bioactive components. MATERIALS AND METHODS The q-CAM model was constructed to explore the anti-angiogenesis agents of CC. The angiogenesis inhibition effects of CC samples at different processing temperatures and its seven alkaloids were determined based on morphological observation and vascular area proportion analysis. UPLC-MS/MS was employed to screen the potent active components of CC on anti-angiogenesis. RESULTS All the intervention by CC at different processing temperatures and its seven alkaloids could inhibit angiogenesis on q-CAM vessels, as evidenced by a poor vasular development in morphological observation and a low vascular area proportion in vascular quantitative analysis, most evident in CC processed at 40 °C and palmatine. LC-MS revealed that palmatine displayed strongest inhibitory effect on q-CAM vessels with a high absorption due to its stable structure. And the maternal nucleus transformation phenomenon of CC alkaloids was found in the quail embryo metabolism. CONCLUSIONS The q-CAM models in conjunction with the UPLC-MS/MS technique could be a useful tool for assessing tumor angiogenesis and screening tumor-targeted medicines. Processing temperature can affect the anti-angiogenesis effect of CC because of its function on the content of alkaloids, and palmatine can be considered as a prospective anti-angiogenic drug.
Collapse
Affiliation(s)
- Dan Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Miao Qi
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Hedi Zhao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Haozhong Wu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Han Chen
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Yanan Lan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Yanmin Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Yani Jiang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Jingjuan Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, PR China.
| |
Collapse
|
6
|
Dong G, Yu J, Shan G, Su L, Yu N, Yang S. N6-Methyladenosine Methyltransferase METTL3 Promotes Angiogenesis and Atherosclerosis by Upregulating the JAK2/STAT3 Pathway via m6A Reader IGF2BP1. Front Cell Dev Biol 2021; 9:731810. [PMID: 34950654 PMCID: PMC8689138 DOI: 10.3389/fcell.2021.731810] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 10/19/2021] [Indexed: 01/15/2023] Open
Abstract
Atherosclerosis (AS) is a life-threatening vascular disease. RNA N6-methyladenosine (m6A) modification level is dysregulated in multiple pathophysiologic processes including AS. In this text, the roles and molecular mechanisms of m6A writer METTL3 in AS progression were explored in vitro and in vivo. In the present study, cell proliferative, migratory, and tube formation capacities were assessed through CCK-8, Transwell migration, and tube formation assays, respectively. RNA m6A level was examined through a commercial kit. RNA and protein levels of genes were measured through RT-qPCR and western blot assays, respectively. VEGF secretion level was tested through ELISA assay. JAK2 mRNA stability was detected through actinomycin D assay. The relationship of METTL3, IGF2BP1, and JAK2 was investigated through bioinformatics analysis, MeRIP, RIP, RNA pull-down, and luciferase reporter assays. An AS mouse model was established to examine the effect of METTL3 knockdown on AS development in vivo. The angiogenetic activity was examined through chick chorioallantoic membrane assay in vivo. The results showed that METTL3 was highly expressed in ox-LDL-induced dysregulated HUVECs. METTL3 knockdown inhibited cell proliferation, migration, tube formation, and VEGF expression/secretion in ox-LDL-treated HUVECs, hampered AS process in vivo, and prevented in vivo angiogenesis of developing embryos. METTL3 positively regulated JAK2 expression and JAK2/STAT3 pathway in an m6A dependent manner in HUVECs. IGF2BP1 positively regulated JAK2 expression through directly binding to an m6A site within JAK2 mRNA in HUVECs. METTL3 knockdown weakened the interaction of JAK2 and IGF2BP1. METTL3 exerted its functions through JAK2/STAT3 pathway. In conclusion, METTL3 knockdown prevented AS progression by inhibiting JAK2/STAT3 pathway via IGF2BP1.
Collapse
Affiliation(s)
- Guo Dong
- Department of Cardiovascular, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jiangbo Yu
- Department of Cardiovascular, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Gaojun Shan
- Department of Cardiovascular, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Lide Su
- Department of Cardiovascular, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Ophthalmology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Nannan Yu
- Department of Ophthalmology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shusen Yang
- Department of Cardiovascular, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| |
Collapse
|
7
|
Prostaglandin E2 Receptor 4 (EP4) as a Therapeutic Target to Impede Breast Cancer-Associated Angiogenesis and Lymphangiogenesis. Cancers (Basel) 2021; 13:cancers13050942. [PMID: 33668160 PMCID: PMC7956318 DOI: 10.3390/cancers13050942] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 12/11/2022] Open
Abstract
The formation of new blood (angiogenesis) and lymphatic (lymphangiogenesis) vessels are major events associated with most epithelial malignancies, including breast cancer. Angiogenesis is essential for cancer cell survival. Lymphangiogenesis is critical in maintaining tumoral interstitial fluid balance and importing tumor-facilitatory immune cells. Both vascular routes also serve as conduits for cancer metastasis. Intratumoral hypoxia promotes both events by stimulating multiple angiogenic/lymphangiogenic growth factors. Studies on tumor-associated lymphangiogenesis and its exploitation for therapy have received less attention from the research community than those on angiogenesis. Inflammation is a key mediator of both processes, hijacked by many cancers by the aberrant expression of the inflammation-associated enzyme cyclo-oxygenase (COX)-2. In this review, we focus on breast cancer and showed that COX-2 is a major promoter of both events, primarily resulting from the activation of prostaglandin (PG) E receptor EP4 on tumor cells, tumor-infiltrating immune cells, and endothelial cells; and the induction of oncogenic microRNAs. The COX-2/EP4 pathway also promotes additional events in breast cancer progression, such as cancer cell migration, invasion, and the stimulation of stem-like cells. Based on a combination of studies using multiple breast cancer models, we show that EP4 antagonists hold a major promise in breast cancer therapy in combination with other modalities including immune check-point inhibitors.
Collapse
|
8
|
Kang YG, Jang H, Park Y, Kim BM. Development of a 3-D Physical Dynamics Monitoring System Using OCM with DVC for Quantification of Sprouting Endothelial Cells Interacting with a Collagen Matrix. MATERIALS 2020; 13:ma13122693. [PMID: 32545667 PMCID: PMC7345655 DOI: 10.3390/ma13122693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/05/2020] [Accepted: 06/10/2020] [Indexed: 11/16/2022]
Abstract
The extracellular matrix (ECM) plays a key role during cell migration, proliferation, and differentiation by providing adhesion sites and serving as a physical scaffold. Elucidating the interaction between the cell and ECM can reveal the underlying mechanisms of cellular behavior that are currently unclear. Analysis of the deformation of the ECM due to cell-matrix interactions requires microscopic, three-dimensional (3-D) imaging methods, such as confocal microscopy and second-harmonic generation microscopy, which are currently limited by phototoxicity and bleaching as a result of the point-scanning approach. In this study, we suggest the use of optical coherence microscopy (OCM) as a live-cell, volumetric, fast imaging tool for analyzing the deformation of fibrous ECM. We optimized such OCM parameters as the sampling rate to obtain images of the best quality that meet the requirements for robust digital volume correlation (DVC) analysis. Visualization and analysis of the mechanical interaction between collagen ECM and human umbilical vein endothelial cells (HUVECs) show that cellular adhesion during protrusion can be analyzed and quantified. The advantages of OCM, such as fine isotropic spatial resolution, fast time resolution, and low phototoxicity, make it the ideal optic tool for 3-D traction force microscopy.
Collapse
Affiliation(s)
- Yong Guk Kang
- Department of Bio-Convergence Engineering, College of Health Science, Korea University, Seoul 02841, Korea;
| | - Hwanseok Jang
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea;
| | - Yongdoo Park
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea;
- Correspondence: (Y.P.); (B.-M.K.); +82-2-2286-1460 (Y.P.); +82-2-940-2771 (B.-M.K.)
| | - Beop-Min Kim
- Department of Bio-Convergence Engineering, College of Health Science, Korea University, Seoul 02841, Korea;
- Correspondence: (Y.P.); (B.-M.K.); +82-2-2286-1460 (Y.P.); +82-2-940-2771 (B.-M.K.)
| |
Collapse
|
9
|
Davidov T, Efraim Y, Dahan N, Baruch L, Machluf M. Porcine arterial ECM hydrogel: Designing an in vitro angiogenesis model for long-term high-throughput research. FASEB J 2020; 34:7745-7758. [PMID: 32337805 DOI: 10.1096/fj.202000264] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 03/23/2020] [Indexed: 12/11/2022]
Abstract
The field of angiogenesis research provides deep understanding regarding this important process, which plays fundamental roles in tissue development and different abnormalities. In vitro models offer the advantages of low-cost high-throughput research of angiogenesis while sparing animal lives, and enabling the use of human cells. Nevertheless, prevailing in vitro models lack stability and are limited to a few days' assays. This study, therefore, examines the hypothesis that closely mimicking the vascular microenvironment can more reliably support longer angiogenesis processes in vitro. To this end, porcine arterial extracellular matrix (paECM)- a key component of blood vessels-was isolated and processed into a thermally induced hydrogel and characterized in terms of composition, structure, and mechanical properties, thus confirming the preservation of important characteristics of arterial extracellular matrix. This unique hydrogel was further tailored into a three-dimensional model of angiogenesis using endothelial cells and supporting cells, in a configuration that allows high-throughput quantitative analysis of cell viability and proliferation, cell migration, and apoptosis, thus revealing the advantages of paECM over frequently used biomaterials. Markedly, when applied with well-known effectors of angiogenesis, the model measures reflected the expected response, hence validating its efficacy and establishing its potential as a promising tool for the research of angiogenesis.
Collapse
Affiliation(s)
- Tzila Davidov
- Faculty of Biotechnology & Food Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Yael Efraim
- Faculty of Biotechnology & Food Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Nitsan Dahan
- Infrastructure Unit, Life Science and Engineering Center, Technion - Israel Institute of Technology, Haifa, Israel
| | - Limor Baruch
- Faculty of Biotechnology & Food Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| | - Marcelle Machluf
- Faculty of Biotechnology & Food Engineering, Technion - Israel Institute of Technology, Haifa, Israel
| |
Collapse
|
10
|
Ratushnyy A, Ezdakova M, Buravkova L. Secretome of Senescent Adipose-Derived Mesenchymal Stem Cells Negatively Regulates Angiogenesis. Int J Mol Sci 2020; 21:ijms21051802. [PMID: 32151085 PMCID: PMC7084202 DOI: 10.3390/ijms21051802] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/28/2020] [Accepted: 03/02/2020] [Indexed: 12/17/2022] Open
Abstract
Nowadays, paracrine regulation is considered as a major tool of mesenchymal stem cell (MSC) involvement in tissue repair and renewal in adults. Aging results in alteration of tissue homeostasis including neovascularization. In this study, we examined the influence of replicative senescence on the angiogenic potential of adipose-derived MSCs (ASCs). Angiogenic activity of conditioned medium (CM) from senescent and “young” ASCs was evaluated in chorioallantoic membrane (CAM) assay in ovo using Japanese quail embryos. Also, the formation of capillary-like tubes by human umbilical vein endothelial cells (HUVECs) in 3D basement membrane matrix “Matrigel” and HUVEC migration capacity were analyzed. Multiplex, dot-blot and gene expression analysis were performed to characterize transcription and production of about 100 angiogenesis-associated proteins. The results point to decreased angiogenic potential of senescent ASC secretome in ovo. A number of angiogenesis-associated proteins demonstrated elevation in CM after long-term cultivation. Meanwhile, VEGF (key positive regulator of angiogenesis) did not change transcription level and concentration in CM. Increasing both pro- (FGF-2, uPA, IL-6, IL-8 etc.) and antiangiogenic (IL-4, IP-10, PF4, Activin A, DPPIV etc.) factors was observed. Some proangiogenic genes were downregulated (IGF1, MMP1, TGFB3, PDGFRB, PGF). Senescence-associated secretory phenotype (SASP) modifications after long-term cultivation lead to attenuation of angiogenic potential of ASC.
Collapse
|
11
|
Ma S, Wang X, Zhang Z, Liu D. Actin-like protein 8 promotes cell proliferation, colony-formation, proangiogenesis, migration and invasion in lung adenocarcinoma cells. Thorac Cancer 2020; 11:526-536. [PMID: 31962007 PMCID: PMC7049497 DOI: 10.1111/1759-7714.13247] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/22/2019] [Accepted: 10/25/2019] [Indexed: 12/18/2022] Open
Abstract
Background Non‐small cell lung cancer (NSCLC) is the leading cause of cancer‐associated mortality worldwide of which lung adenocarcinoma (LUAD) is the most common. The identification of oncogenes and effective drug targets is the key to individualized LUAD treatment. Actin‐like protein 8 (ACTL8), a member of the cancer/testis antigen family, is associated with tumor growth and patient prognosis in various types of cancer. However, whether ACTL8 is involved in the development of LUAD remains unknown. The aim of the present study was to demonstrate the role of ACTL8 in human LUAD cells. Methods The expression of ACTL8 in LUAD tissues and cell lines was assessed using immunohistochemistry and western blotting. Additionally, plasmids expressing ACTL8‐specific short hairpin RNAs were used to generate lentiviruses which were subsequently used to infect A549 and NCI‐H1975 human LUAD cells. Cell proliferation, migration, invasion and apoptosis, as well as cell cycle progression and the expression of protein markers of epithelial to mesenchymal transition were investigated. A549 cell tumor growth in nude mice was also examined. Results The results showed that ACTL8 was highly expressed in A549 and NCI‐H1975 LUAD cell lines. Additionally, ACTL8‐knockdown inhibited proliferation, colony formation, cell cycle progression, migration and invasion, and increased apoptosis in both cell lines. Furthermore, in vivo experiments in nude mice revealed that ACTL8‐knockdown inhibited A549 cell tumor growth. Conclusion These results suggest that ACTL8 serves an oncogenic role in human LUAD cells, and that ACTL8 may represent a potential therapeutic target for LUAD. Key points Our results suggest that ACTL8 serves an oncogenic role in human LUAD cells, and that ACTL8 may represent a potential therapeutic target for LUAD.
Collapse
Affiliation(s)
- Shanwu Ma
- Department of Thoracic Surgery, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China
| | - Xiaowei Wang
- Department of Pathology, China-Japan Friendship Hospital, Beijing, China
| | - Zhenrong Zhang
- Department of Thoracic Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Deruo Liu
- Department of Thoracic Surgery, China-Japan Friendship Hospital, Beijing, China
| |
Collapse
|
12
|
Katakia YT, Duddu S, S N, Kumar P, Rahman F, Kumaramanickavel G, Chatterjee S. Ex vivo model for studying endothelial tip cells: Revisiting the classical aortic-ring assay. Microvasc Res 2019; 128:103939. [PMID: 31676309 DOI: 10.1016/j.mvr.2019.103939] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/17/2019] [Accepted: 10/21/2019] [Indexed: 10/25/2022]
Abstract
A drug undergoes several in silico, in vitro, ex vivo and in vivo assays before entering into the clinical trials. In 2014, it was reported that only 32% of drugs are likely to make it to Phase-3 trials, and overall, only one in 10 drugs makes it to the market. Therefore, enhancing the precision of pre-clinical trial models could reduce the number of failed clinical trials and eventually time and financial burden in health sciences. In order to attempt the above, in the present study, we have shown that aortic ex-plants isolated from different stages of chick embryo and different regions of the aorta (pulmonary and systemic) have differential sprouting potential and response to angiogenesis modulatory drugs. Aorta isolated from HH37 staged chick embryo showed 16% (p < 0.001) and 11% (p < 0.001) increase in the number of tip cells at 72 h of culture compared to that of HH35 and HH29 respectively. The ascending order of the number of tip cells was found as central (Gen II), proximal (Gen I) and distal (Gen III) in a virtual zonal segmentation of endothelial sprouting. The HH37 staged aortas displayed differential responses to pro- and anti-angiogenic drugs like Vascular endothelial growth factor (VEGF), nitric oxide donor (spNO), and bevacizumab (avastin), thalidomide respectively. The human placenta tissue-culture however evinced endothelial sprouting only on day 12, with a gradual decrease in the number of tip cells until 21 days. In summary, this study provides an avant-garde angiogenic model emphasized on tip cells that would enhance the precision to test next-generation angiogenic drugs.
Collapse
Affiliation(s)
- Yash T Katakia
- Department of Biotechnology, Anna University, Chennai 600 025, India; Vascular Biology Laboratory, AU-KBC Research Centre, MIT Campus, Chennai 600 044, India
| | - Sushmitha Duddu
- Department of Biotechnology, Anna University, Chennai 600 025, India
| | - Nithya S
- Vascular Biology Laboratory, AU-KBC Research Centre, MIT Campus, Chennai 600 044, India
| | - Pavitra Kumar
- Vascular Biology Laboratory, AU-KBC Research Centre, MIT Campus, Chennai 600 044, India
| | - Farhana Rahman
- Department of Pharmacology, Sree Balaji Medical College and Hospital, BIHER, Chennai 600 044, India
| | - Govindasamy Kumaramanickavel
- Research and Centre for Cellular Genomics, Sree Balaji Medical College and Hospital, BIHER, Chennai 600 044, India
| | - Suvro Chatterjee
- Department of Biotechnology, Anna University, Chennai 600 025, India; Vascular Biology Laboratory, AU-KBC Research Centre, MIT Campus, Chennai 600 044, India.
| |
Collapse
|
13
|
Rammal H, Entz L, Dubus M, Moniot A, Bercu NB, Sergheraert J, Gangloff SC, Mauprivez C, Kerdjoudj H. Osteoinductive Material to Fine-Tune Paracrine Crosstalk of Mesenchymal Stem Cells With Endothelial Cells and Osteoblasts. Front Bioeng Biotechnol 2019; 7:256. [PMID: 31649927 PMCID: PMC6795130 DOI: 10.3389/fbioe.2019.00256] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/23/2019] [Indexed: 01/08/2023] Open
Abstract
While stem cell/biomaterial studies provide solid evidences that biomaterial intrinsic cues deeply affect cell fate, current strategies tend to neglect their effects on mesenchymal stem cells (MSCs) secretory activities and resulting cell-crosstalks. The present study aims to investigate the impact of bone-mimetic material (B-MM), with intrinsic osteoinductive property, on MSCs mediator secretions; and to explore underlying effects on cells involved in bone regeneration. Human MSCs were cultured, on B-MM, made from inorganic calcium phosphate supplemented with chitosan and hyaluronic acid biopolymers. Collected MSCs culture media were assessed for mediators release quantification and used further to stimulate endothelial cells (ECs) and alveolar bone derived osteoblasts (OBs). Without osteogenic supplements, MSCs committed into bone lineage forming thus 3D bone-like nodules after 21 days. Despite a weak percentage of cell commitment, our data elucidate new aspects of osteoinductive material effect on MSCs functions through the regulation of the secretion of mediators involved in bone regeneration and subsequently the MSCs/ECs indirect crosstalk with osteogenesis-boosting effect. Using MSCs culture media, we demonstrate a large potential of osteoinductive materials and MSCs in bone regenerative medicine. Such strategies could help to address some insights in cell-free therapies using MSCs derived media.
Collapse
Affiliation(s)
- Hassan Rammal
- EA 4691, Biomatériaux et Inflammation en Site Osseux (BIOS), SFR CAP Santé (FED4231), Université de Reims Champagne Ardenne, Reims, France.,UFR d'Odontologie, Université de Reims Champagne Ardenne, Reims, France
| | - Laura Entz
- EA 4691, Biomatériaux et Inflammation en Site Osseux (BIOS), SFR CAP Santé (FED4231), Université de Reims Champagne Ardenne, Reims, France
| | - Marie Dubus
- EA 4691, Biomatériaux et Inflammation en Site Osseux (BIOS), SFR CAP Santé (FED4231), Université de Reims Champagne Ardenne, Reims, France.,UFR d'Odontologie, Université de Reims Champagne Ardenne, Reims, France
| | - Aurélie Moniot
- EA 4691, Biomatériaux et Inflammation en Site Osseux (BIOS), SFR CAP Santé (FED4231), Université de Reims Champagne Ardenne, Reims, France
| | - Nicolae B Bercu
- EA 4682, Laboratoire de Recherche en Nanoscience (LRN), Université de Reims Champagne-Ardenne, Reims, France
| | - Johan Sergheraert
- EA 4691, Biomatériaux et Inflammation en Site Osseux (BIOS), SFR CAP Santé (FED4231), Université de Reims Champagne Ardenne, Reims, France.,UFR d'Odontologie, Université de Reims Champagne Ardenne, Reims, France.,Pôle Médecine bucco-dentaire, Hôpital Maison Blanche, Centre Hospitalier Universitaire de Reims, Reims, France
| | - Sophie C Gangloff
- EA 4691, Biomatériaux et Inflammation en Site Osseux (BIOS), SFR CAP Santé (FED4231), Université de Reims Champagne Ardenne, Reims, France.,UFR de Pharmacie, Université de Reims Champagne Ardenne, Reims, France
| | - Cédric Mauprivez
- EA 4691, Biomatériaux et Inflammation en Site Osseux (BIOS), SFR CAP Santé (FED4231), Université de Reims Champagne Ardenne, Reims, France.,UFR d'Odontologie, Université de Reims Champagne Ardenne, Reims, France.,Pôle Médecine bucco-dentaire, Hôpital Maison Blanche, Centre Hospitalier Universitaire de Reims, Reims, France
| | - Halima Kerdjoudj
- EA 4691, Biomatériaux et Inflammation en Site Osseux (BIOS), SFR CAP Santé (FED4231), Université de Reims Champagne Ardenne, Reims, France.,UFR d'Odontologie, Université de Reims Champagne Ardenne, Reims, France
| |
Collapse
|
14
|
Shariatzadeh M, Brandt MM, Cheng C, Ten Berge JC, Rothova A, Leenen PJM, Dik WA. Three-dimensional tubule formation assay as therapeutic screening model for ocular microvascular disorders. Eye (Lond) 2018; 32:1380-1386. [PMID: 29743587 DOI: 10.1038/s41433-018-0089-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 01/22/2018] [Accepted: 02/20/2018] [Indexed: 12/16/2022] Open
Abstract
PURPOSE This study is aimed to adapt a three-dimensional (3-D) in vitro angiogenesis model to the ophthalmology field using retinal endothelial cells (REC). This system is applied to assess the angiogenic capacity of aqueous humor (AH) from patients with ocular disorders, and to test the effect of VEGF inhibitor (aflibercept) on induced angiogenesis. METHODS Human REC and umbilical vein endothelial cells (HUVEC) and pericytes were co-cultured in a gel matrix with 25-200 ng/ml pro-angiogenic growth factors (GF). AH from patients with cataract, glaucoma or proliferative diabetic retinopathy (PDR) was tested in the REC-pericyte co-culture. Aflibercept was then introduced to the co-culture containing PDR AH. The surface area and total tubule length were measured using Image J. RESULTS Optimal GF concentrations at 200 ng/ml induced angiogenesis by REC as well as HUVEC, while vessel formation by both cell types was strongly reduced using 25-50 ng/ml GF. Addition of AH from the PDR patient triggered tubule formation by REC at low GF concentration. Aflibercept, however, significantly inhibited angiogenesis induced by PDR AH, but showed no significant influence on other conditions. CONCLUSION REC can be applied efficiently in the 3-D in vitro angiogenesis model as a diagnostic tool to assess the AH angiogenic status and to validate new anti-angiogenic therapeutic compounds prior to clinical trial.
Collapse
Affiliation(s)
- Mahnaz Shariatzadeh
- Department of Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - Maarten M Brandt
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Caroline Cheng
- Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Nephrology and Hypertension, DIGD, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Josianne C Ten Berge
- Department of Ophthalmology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Aniki Rothova
- Department of Ophthalmology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Pieter J M Leenen
- Department of Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Willem A Dik
- Department of Immunology, Laboratory Medical Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
| |
Collapse
|
15
|
Chu YP, Li HC, Ma L, Xia Y. Establishment of a tumor neovascularization animal model with biomaterials in rabbit corneal pouch. Life Sci 2018; 202:98-102. [PMID: 29577878 DOI: 10.1016/j.lfs.2018.03.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 03/13/2018] [Accepted: 03/21/2018] [Indexed: 12/14/2022]
Abstract
AIMS The present animal model of tumor neovascularization most often used by researchers is zebrafish. For studies on human breast cancer cell neovascularization, a new animal model was established to enable a more convenient study of tumor neovascularization. MAIN METHODS A sodium alginate-gelatin blend gel system was used to design the new animal model. The model was established using rabbit corneal pouch implantation. Then, the animal model was validated by human breast cancer cell lines MCF-7-Kindlin-2 and MCF-7-CMV. KEY FINDINGS The experiment intuitively observed the relationship between tumor and neovascularization, and demonstrated the advantages of this animal model in the study of tumor neovascularization. SIGNIFICANCE The use of sodium alginate-gelatin blends to establish tumor neovascularization in a rabbit corneal pouch is a novel and ideal method for the study of neovascularization. It may be a better animal model for expanding the research in this area.
Collapse
Affiliation(s)
- Yu-Ping Chu
- Department of Oncology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100026, China
| | - Hong-Chuan Li
- Department of Orthopedics, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Ling Ma
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Yang Xia
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China.
| |
Collapse
|
16
|
Wen L, Wen YC, Ke GJ, Sun SQ, Dong K, Wang L, Liao RF. TRPV4 regulates migration and tube formation of human retinal capillary endothelial cells. BMC Ophthalmol 2018; 18:38. [PMID: 29433476 PMCID: PMC5809855 DOI: 10.1186/s12886-018-0697-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 01/29/2018] [Indexed: 02/03/2023] Open
Abstract
Background Ca2+ entry plays an important role in modulating endothelial cell migration and tube formation. Transient receptor potential cation channel subfamily V member 4 (TRPV4) is a Ca2+-permeable channel that is widely expressed in endothelial cells. It has been reported that TRPV4 is expressed in HRCECs and regulates Ca2+ entry. However, the function of TRPV4 in human retinal capillary endothelial cells (HRCECs) remains unknown. Methods In this study we used western blot and immunostaining assay to verify TRPV4 expression in HRCECs. And then we pretreated HRCECs with HC067047 and transfected with specific shRNA of TRPV4. The functional presence of TrpV4 was determined by using fluorescence, migration and tube formation assay in TrpV4 knockdown cells or control cells. Results Using western blot and immunostaining, we confirmed TRPV4 expression in HRCECs. Moreover, inhibition of TRPV4 using the specific inhibitor HC067047 and the knockdown of TRPV4 with shRNA significantly suppressed tube formation and migration by HRCECs. Conclusions TRPV4 is essential for HRCEC migration and tube formation, and maybe a potential therapeutic target for retinal vascular diseases. Electronic supplementary material The online version of this article (10.1186/s12886-018-0697-2) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Lei Wen
- Department of Ophthalmology, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, Anhui, 230022, China.,Department of Ophthalmology, Anhui Provincial Hospital, Hefei, Anhui, China
| | - Yue-Chun Wen
- Department of Ophthalmology, Anhui Provincial Hospital, Hefei, Anhui, China
| | - Gen-Jie Ke
- Department of Ophthalmology, Anhui Provincial Hospital, Hefei, Anhui, China
| | - Si-Qin Sun
- Department of Ophthalmology, Anhui Provincial Hospital, Hefei, Anhui, China
| | - Kai Dong
- Department of Ophthalmology, Anhui Provincial Hospital, Hefei, Anhui, China
| | - Lin Wang
- Department of Ophthalmology, Anhui Provincial Hospital, Hefei, Anhui, China
| | - Rong-Feng Liao
- Department of Ophthalmology, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, Anhui, 230022, China.
| |
Collapse
|
17
|
Gentile MT, Russo R, Pastorino O, Cioffi S, Barbieri F, Illingworth EA, Grieco M, Chambery A, Colucci-D'Amato L. Ruta graveolens water extract inhibits cell-cell network formation in human umbilical endothelial cells via MEK-ERK1/2 pathway. Exp Cell Res 2018; 364:50-58. [PMID: 29366810 DOI: 10.1016/j.yexcr.2018.01.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 01/10/2018] [Accepted: 01/19/2018] [Indexed: 01/01/2023]
Abstract
Angiogenesis is a process encompassing several steps such as endothelial cells proliferation, differentiation and migration to form a vascular network, involving different signal transduction pathways. Among these, ERK1/2 signaling mediates VEGF-dependent signaling pathway. Here we report that the water extract of Ruta graveolens (RGWE), widely known as a medicinal plant, is able to impair in a dose-dependent manner, cell network formation without affecting cell viability. Biochemical analysis showed that the major component of RGWE is rutin, unable to reproduce RGWE effect. We found that RGWE inhibits ERK1/2 phosphorylation and that this event is crucial in cell network formation since the transfection of HUVEC with a constitutively active MEK (caMEK), the ERK1/2 activator, induces a robust cell network formation as compared to untransfected and/or mock transfected cells and, more importantly, caMEK transfected cells became unresponsive to RGWE. Moreover, RGWE inhibits VEGF and nestin gene expression, necessary for vessel formation, and the caMEK transfection induces their higher expression. In conclusion, we report that RGWE is able to significantly impair vessels network formation without affecting cell viability, preventing ERK1/2 activation and, in turn, down-regulating VEGF and nestin expression. These findings point to RGWE as a potential therapeutic tool capable to interfere with pathologic angiogenesis.
Collapse
Affiliation(s)
- Maria Teresa Gentile
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Rosita Russo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Olga Pastorino
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Sara Cioffi
- Dipartimento di Chimica e Biologia "Adolfo Zambelli", Università degli Studi di Salerno, Italy; Institute of Genetics and Biophysics "ABT", CNR, Naples, Italy
| | | | - Elisabeth Anne Illingworth
- Dipartimento di Chimica e Biologia "Adolfo Zambelli", Università degli Studi di Salerno, Italy; Institute of Genetics and Biophysics "ABT", CNR, Naples, Italy
| | - Michele Grieco
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Angela Chambery
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Luca Colucci-D'Amato
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy.
| |
Collapse
|
18
|
Huang Q, Sun Y, Ma X, Gao Y, Li X, Niu Y, Zhang X, Chang C. Androgen receptor increases hematogenous metastasis yet decreases lymphatic metastasis of renal cell carcinoma. Nat Commun 2017; 8:918. [PMID: 29030639 PMCID: PMC5640635 DOI: 10.1038/s41467-017-00701-6] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 07/19/2017] [Indexed: 01/20/2023] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is a gender-biased tumor. Here we report that there is also a gender difference between pulmonary metastasis and lymph node metastasis showing that the androgen receptor (AR)-positive ccRCC may prefer to metastasize to lung rather than to lymph nodes. A higher AR expression increases ccRCC hematogenous metastasis yet decreases ccRCC lymphatic metastases. Mechanism dissection indicates that AR enhances miR-185-5p expression via binding to the androgen response elements located on the promoter of miR-185-5p, which suppresses VEGF-C expression via binding to its 3' UTR. In contrast, AR-enhanced miR-185-5p also promotes HIF2α/VEGF-A expression via binding to the promoter region of HIF2α. Together, these results provide a unique mechanism by which AR can either increase or decrease ccRCC metastasis at different sites and may help us to develop combined therapies using anti-AR and anti-VEGF-C compounds to better suppress ccRCC progression.The incidence of renal cell carcinoma is higher in males than in females due to the different androgen receptor signaling but the molecular mechanisms behind this gender bias are unclear. Here the authors show how androgen receptor expression influences the metastatic route through the regulation of miR-185 and VEGF isoforms.
Collapse
Affiliation(s)
- Qingbo Huang
- Department of Urology, Chinese PLA General Hospital, Beijing, 100853, China
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, Radiation Oncology, and The Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Yin Sun
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, Radiation Oncology, and The Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Xin Ma
- Department of Urology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Yu Gao
- Department of Urology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Xintao Li
- Department of Urology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Yuanjie Niu
- Chawnshang Chang Sex Hormone Research Center, Tianjin Institute of Urology, Tianjin Medical University, Tianjin, 300211, China
| | - Xu Zhang
- Department of Urology, Chinese PLA General Hospital, Beijing, 100853, China.
| | - Chawnshang Chang
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, Radiation Oncology, and The Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, 14642, USA.
- Chawnshang Chang Sex Hormone Research Center, Tianjin Institute of Urology, Tianjin Medical University, Tianjin, 300211, China.
- Sex Hormone Research Center, China Medical University/Hospital, Taichung, 404, Taiwan.
| |
Collapse
|
19
|
Lin X, Song L, He D, Zeng X, Wu J, Luo W, Yang Q, Wang J, Wang T, Cai J, Lin Y, Lai F, Peng W, Wu X. An FGF8b-mimicking peptide with potent antiangiogenic activity. Mol Med Rep 2017; 16:894-900. [PMID: 28560418 DOI: 10.3892/mmr.2017.6651] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 01/18/2017] [Indexed: 11/06/2022] Open
Abstract
Fibroblast growth factor (FGF) 8b interacts with its receptors and promotes angiogenesis in hormone‑dependent tumors. In the present study, we demonstrated that a short peptide, termed 8b‑13, which mimics part of the FGF8b structure, significantly inhibited the proliferation and migration of human umbilical vein endothelial cells (HUVECs) triggered by FGF8b using 3‑(4,5‑dimethylthiazol‑2‑yl)‑2,5‑diphenyltetrazolium bromide (MTT), flow cytometry and an in vitro scratch assay. In addition, the findings from western blotting and reverse transcription‑quantitative polymerase chain reaction revealed that 8b‑13 appeared to counteract the effects of FGF8b on the expression of cyclin D1, the activation of signaling cascades, and the expression of proangiogenic factors; these actions may be involved in the mechanism underlying the inhibitory effects of 8b‑13 on FGF8b‑induced HUVEC proliferation and migration. The present results suggested that 8b‑13 may be considered a potent FGF8b antagonist with antiangiogenic activity, and may have potential as a novel therapeutic agent for the treatment of cancer characterized by abnormal FGF8b upregulation.
Collapse
Affiliation(s)
- Xiaomian Lin
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Li Song
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Dan He
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Xiangfeng Zeng
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Jianzhang Wu
- Department of Pharmacy, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Wu Luo
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Qi Yang
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Jizhong Wang
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Tianxiang Wang
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Jialong Cai
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Yanling Lin
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Fubin Lai
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Wentao Peng
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Xiaoping Wu
- Institute of Tissue Transplantation and Immunology, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Key Laboratory of Molecule Immunology and Antibody Engineering of Guangdong Province, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| |
Collapse
|
20
|
Messias de Lima CF, Dos Santos Reis MD, da Silva Ramos FW, Ayres-Martins S, Smaniotto S. Growth hormone modulates in vitro endothelial cell migration and formation of capillary-like structures. Cell Biol Int 2017; 41:577-584. [PMID: 28205281 DOI: 10.1002/cbin.10747] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 02/13/2017] [Indexed: 12/21/2022]
Abstract
The generation of new blood vessels is a complex process mediated by a variety of growth factors, and the growth hormone (GH) has been shown to act as a proangiogenic factor. In fact, human GH deficiency or excess are associated with endothelial dysfunction. Moreover, mouse models have revealed the action of GH in both tissue repair and in the microvascular circulation of normal tissues. In this study, we investigated the in vitro effects of GH on endothelial cells. Using a murine endothelioma cell line (tEnd.1), we demonstrated that GH has a mitogenic effect. The hormone also affected the endothelial cellular morphology and augmented the deposition of the extracellular matrix molecules, laminin, and fibronectin, on tEnd.1 surface. GH could stimulate tEnd.1 cell fugetaxis, in transwell chambers migration assay, and increased the formation of capillary-like structures in Matrigel®-coated plates. Given the important role of angiogenesis during tissue injury, for example, at ischemic lesions, these findings shed light on therapeutic angiogenesis, particularly in pathologies where the cardiovascular system has been compromised.
Collapse
Affiliation(s)
- Cícero Fagner Messias de Lima
- Laboratory of Cell Biology, Institute of Biology and Health Science, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Maria Danielma Dos Santos Reis
- Laboratory of Cell Biology, Institute of Biology and Health Science, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | | | - Silvana Ayres-Martins
- Laboratory of Cell Biology, Institute of Biology and Health Science, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Salete Smaniotto
- Laboratory of Cell Biology, Institute of Biology and Health Science, Federal University of Alagoas, Maceió, Alagoas, Brazil
| |
Collapse
|
21
|
Hadjizadeh A, Ghasemkhah F, Ghasemzaie N. Polymeric Scaffold Based Gene Delivery Strategies to Improve Angiogenesis in Tissue Engineering: A Review. POLYM REV 2017. [DOI: 10.1080/15583724.2017.1292402] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Afra Hadjizadeh
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Farzaneh Ghasemkhah
- Institute of Nanotechnology, Amirkabir University of Technology, Tehran, Iran
| | - Niloofar Ghasemzaie
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| |
Collapse
|
22
|
Weigand A, Beier JP, Arkudas A, Al-Abboodi M, Polykandriotis E, Horch RE, Boos AM. The Arteriovenous (AV) Loop in a Small Animal Model to Study Angiogenesis and Vascularized Tissue Engineering. J Vis Exp 2016. [PMID: 27842348 DOI: 10.3791/54676] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
A functional blood vessel network is a prerequisite for the survival and growth of almost all tissues and organs in the human body. Moreover, in pathological situations such as cancer, vascularization plays a leading role in disease progression. Consequently, there is a strong need for a standardized and well-characterized in vivo model in order to elucidate the mechanisms of neovascularization and develop different vascularization approaches for tissue engineering and regenerative medicine. We describe a microsurgical approach for a small animal model for induction of a vascular axis consisting of a vein and artery that are anastomosed to an arteriovenous (AV) loop. The AV loop is transferred to an enclosed implantation chamber to create an isolated microenvironment in vivo, which is connected to the living organism only by means of the vascular axis. Using 3D imaging (MRI, micro-CT) and immunohistology, the growing vasculature can be visualized over time. By implanting different cells, growth factors and matrices, their function in blood vessel network formation can be analyzed without any disturbing influences from the surroundings in a well controllable environment. In addition to angiogenesis and antiangiogenesis studies, the AV loop model is also perfectly suited for engineering vascularized tissues. After a certain prevascularization time, the generated tissues can be transplanted into the defect site and microsurgically connected to the local vessels, thereby ensuring immediate blood supply and integration of the engineered tissue. By varying the matrices, cells, growth factors and chamber architecture, it is possible to generate various tissues, which can then be tailored to the individual patient's needs.
Collapse
Affiliation(s)
- Annika Weigand
- Department of Plastic and Hand Surgery and Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU);
| | - Justus P Beier
- Department of Plastic and Hand Surgery and Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU)
| | - Andreas Arkudas
- Department of Plastic and Hand Surgery and Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU)
| | - Majida Al-Abboodi
- Department of Plastic and Hand Surgery and Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU); Genetic Engineering and Biotechnology Institute for Postgraduate Studies, Baghdad University
| | | | - Raymund E Horch
- Department of Plastic and Hand Surgery and Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU)
| | - Anja M Boos
- Department of Plastic and Hand Surgery and Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU)
| |
Collapse
|
23
|
Nguyen DT, Fan Y, Akay YM, Akay M. Investigating Glioblastoma Angiogenesis Using A 3D in Vitro GelMA Microwell Platform. IEEE Trans Nanobioscience 2016; 15:289-93. [PMID: 27046878 DOI: 10.1109/tnb.2016.2528170] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Angiogenesis is an indispensable mechanism in physiological and pathological development of tumors that requires an adequate blood supply. Therefore, understanding the angiogenesis mechanism of tumors has become an important research area to develop reliable and effective therapies for the treatment of tumors. Although several in vivo and in vitro models were developed and used to study the underlying mechanism of angiogenesis, they showed limited success. Therefore, there is an urgent need to build a stable and cost-effective three-dimensional (3D) in vitro angiogenesis model to investigate the tumor formation. In this study, we designed a 3D in vitro angiogenesis model based on gelatin methacrylate (GelMA) hydrogel microwells to mimic an in vivo-like microenvironment for co-cultured glioblastoma and endothelial cells. Our results confirmed the in vitro formation of microtubules during the angiogenic process. We believe that our cost-effective platform can be used for the high-throughput screening of anti-angiogenesis drugs and even for the development of better treatment strategies.
Collapse
|
24
|
Chávez MN, Aedo G, Fierro FA, Allende ML, Egaña JT. Zebrafish as an Emerging Model Organism to Study Angiogenesis in Development and Regeneration. Front Physiol 2016; 7:56. [PMID: 27014075 PMCID: PMC4781882 DOI: 10.3389/fphys.2016.00056] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 02/05/2016] [Indexed: 01/04/2023] Open
Abstract
Angiogenesis is the process through which new blood vessels are formed from preexisting ones and plays a critical role in several conditions including embryonic development, tissue repair and disease. Moreover, enhanced therapeutic angiogenesis is a major goal in the field of regenerative medicine and efficient vascularization of artificial tissues and organs is one of the main hindrances in the implementation of tissue engineering approaches, while, on the other hand, inhibition of angiogenesis is a key therapeutic target to inhibit for instance tumor growth. During the last decades, the understanding of cellular and molecular mechanisms involved in this process has been matter of intense research. In this regard, several in vitro and in vivo models have been established to visualize and study migration of endothelial progenitor cells, formation of endothelial tubules and the generation of new vascular networks, while assessing the conditions and treatments that either promote or inhibit such processes. In this review, we address and compare the most commonly used experimental models to study angiogenesis in vitro and in vivo. In particular, we focus on the implementation of the zebrafish (Danio rerio) as a model to study angiogenesis and discuss the advantages and not yet explored possibilities of its use as model organism.
Collapse
Affiliation(s)
- Myra N Chávez
- Department of Plastic Surgery and Hand Surgery, University Hospital rechts der Isar, Technische Universität MünchenMunich, Germany; Department of Biology, FONDAP Center for Genome Regulation, Faculty of Science, Universidad de ChileSantiago, Chile; Department of Biochemistry and Molecular Biology, FONDAP Advanced Center for Chronic Diseases (ACCDiS) and Center for Molecular Studies of the Cell (CEMC), Faculty of Chemical and Pharmaceutical Sciences, Faculty of Medicine, University of ChileSantiago, Chile
| | - Geraldine Aedo
- Department of Biology, FONDAP Center for Genome Regulation, Faculty of Science, Universidad de Chile Santiago, Chile
| | - Fernando A Fierro
- Department of Cell Biology and Human Anatomy, University of California Davis, Sacramento, CA, USA
| | - Miguel L Allende
- Department of Biology, FONDAP Center for Genome Regulation, Faculty of Science, Universidad de Chile Santiago, Chile
| | - José T Egaña
- Institute for Medical and Biological Engineering, Schools of Engineering, Biological Sciences and Medicine, Pontifícia Universidad Católica de Chile Santiago, Chile
| |
Collapse
|
25
|
Baptista PM, Moran EC, Vyas D, Ribeiro MH, Atala A, Sparks JL, Soker S. Fluid Flow Regulation of Revascularization and Cellular Organization in a Bioengineered Liver Platform. Tissue Eng Part C Methods 2016; 22:199-207. [PMID: 26772270 DOI: 10.1089/ten.tec.2015.0334] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
OBJECTIVE Modeling of human liver development, especially cellular organization and the mechanisms underlying it, is fundamental for studying liver organogenesis and congenital diseases, yet there are no reliable models that mimic these processes ex vivo. DESIGN Using an organ engineering approach and relevant cell lines, we designed a perfusion system that delivers discrete mechanical forces inside an acellular liver extracellular matrix scaffold to study the effects of mechanical stimulation in hepatic tissue organization. RESULTS We observed a fluid flow rate-dependent response in cell distribution within the liver scaffold. Next, we determined the role of nitric oxide (NO) as a mediator of fluid flow effects on endothelial cells. We observed impairment of both neovascularization and liver tissue organization in the presence of selective inhibition of endothelial NO synthase. Similar results were observed in bioengineered livers grown under static conditions. CONCLUSION Overall, we were able to unveil the potential central role of discrete mechanical stimulation through the NO pathway in the revascularization and cellular organization of a bioengineered liver. Last, we propose that this organ bioengineering platform can contribute significantly to the identification of physiological mechanisms of liver organogenesis and regeneration and improve our ability to bioengineer livers for transplantation.
Collapse
Affiliation(s)
- Pedro M Baptista
- 1 Wake Forest Institute for Regenerative Medicine, Wake Forest University Health Sciences , Winston-Salem, North Carolina.,2 University of Zaragoza , Zaragoza, Spain .,3 IIS Aragón , CIBERehd, Zaragoza, Spain .,4 Aragon Health Sciences Institute (IACS) , Zaragoza, Spain
| | - Emma C Moran
- 1 Wake Forest Institute for Regenerative Medicine, Wake Forest University Health Sciences , Winston-Salem, North Carolina
| | - Dipen Vyas
- 1 Wake Forest Institute for Regenerative Medicine, Wake Forest University Health Sciences , Winston-Salem, North Carolina
| | - Maria H Ribeiro
- 5 Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), University of Lisbon , Lisbon, Portugal
| | - Anthony Atala
- 1 Wake Forest Institute for Regenerative Medicine, Wake Forest University Health Sciences , Winston-Salem, North Carolina
| | - Jessica L Sparks
- 6 Department of Chemical, Paper and Biomedical Engineering, Miami University , Oxford, Ohio
| | - Shay Soker
- 1 Wake Forest Institute for Regenerative Medicine, Wake Forest University Health Sciences , Winston-Salem, North Carolina
| |
Collapse
|
26
|
Zhou Z, Pausch F, Schlötzer-Schrehardt U, Brachvogel B, Pöschl E. Induction of initial steps of angiogenic differentiation and maturation of endothelial cells by pericytes in vitro and the role of collagen IV. Histochem Cell Biol 2016; 145:511-25. [PMID: 26747274 DOI: 10.1007/s00418-015-1398-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2015] [Indexed: 12/31/2022]
Abstract
Activation of endothelial cells and recruitment of mural cells define critical steps during the formation of stable vascular elements. Both events are reflected by cocultures of endothelial cells and isolated murine pericyte-like cells and define a versatile platform for the analysis of distinct steps during the angiogenic process in vitro. Isolated pericyte-like cells promote the survival of endothelial cells, induce the assembly of endothelial cells as well as establish direct contacts with forming endothelial alignments. More importantly, they also induce characteristic steps of maturation including the assembly of stable cell-cell junctions, deposition of basement membrane-like matrices and local formation of a central lumen. The presence of pericyte-like cells induces the secretion of extracellular matrices enriched in collagen IV by endothelial cells, which improves endothelial tube formation and provides the adhesive substrate for mural cell recruitment. Collagen-binding integrins contribute differentially to the process, with α1β1 involved in the adhesion of pericyte-like cells to collagen IV and α2β1 mainly involved in endothelial cord formation. These data indicate that pericyte-like cells are essential for the survival of endothelial cells, the efficient formation of endothelial alignments as well as initial steps of maturation of capillary-like structures.
Collapse
Affiliation(s)
- Zhigang Zhou
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
- Medical School, University of East Anglia, Norwich Research Park, Norwich, UK
- Department of Cardiovascular Medicine, Medical College, Nantong University, Nantong, China
| | - Friederike Pausch
- Department of Experimental Medicine I, University of Erlangen-Nürnberg, Erlangen, Germany
| | | | - Bent Brachvogel
- Medical Faculty, Center for Biochemistry, University of Cologne, Cologne, Germany
| | - Ernst Pöschl
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK.
| |
Collapse
|
27
|
Ames JJ, Henderson T, Liaw L, Brooks PC. Methods for Analyzing Tumor Angiogenesis in the Chick Chorioallantoic Membrane Model. Methods Mol Biol 2016; 1406:255-269. [PMID: 26820962 DOI: 10.1007/978-1-4939-3444-7_22] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Models of tumor angiogenesis have played a critical role in understanding the mechanisms involved in the recruitment of vasculature to the tumor mass, and have also provided a platform for testing antiangiogenic potential of new therapeutics that combat the development of malignant growth. In this regard, the chorioallantoic membrane (CAM) of the developing chick embryo has proven to be an elegant model for investigation of angiogenic processes. Here, we describe methods for effectively utilizing the preestablished vascular network of the chick CAM to investigate and quantify tumor-associated angiogenesis in a breast tumor model.
Collapse
Affiliation(s)
- Jacquelyn J Ames
- Center for Molecular Medicine, Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA
- Graduate School of Biomedical Science and Engineering, University of Maine, Orono, ME, 04469, USA
| | - Terry Henderson
- Center for Molecular Medicine, Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA
| | - Lucy Liaw
- Center for Molecular Medicine, Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA
| | - Peter C Brooks
- Center for Molecular Medicine, Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA.
| |
Collapse
|
28
|
Usui Y, Westenskow PD, Murinello S, Dorrell MI, Scheppke L, Bucher F, Sakimoto S, Paris LP, Aguilar E, Friedlander M. Angiogenesis and Eye Disease. Annu Rev Vis Sci 2015; 1:155-184. [DOI: 10.1146/annurev-vision-082114-035439] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yoshihiko Usui
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
| | - Peter D. Westenskow
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
- The Lowy Medical Research Institute, La Jolla, California 92037
| | - Salome Murinello
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
| | - Michael I. Dorrell
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
- The Lowy Medical Research Institute, La Jolla, California 92037
- Department of Biology, Point Loma Nazarene University, San Diego, California 92106
| | - Lea Scheppke
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
| | - Felicitas Bucher
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
| | - Susumu Sakimoto
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
| | - Liliana P. Paris
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
| | - Edith Aguilar
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
| | - Martin Friedlander
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California 92037; , , , , , , , , ,
- The Lowy Medical Research Institute, La Jolla, California 92037
| |
Collapse
|
29
|
Kumar R, Deep G, Wempe MF, Agarwal R, Agarwal C. Procyanidin B2 3,3″-di-O-gallate inhibits endothelial cells growth and motility by targeting VEGFR2 and integrin signaling pathways. Curr Cancer Drug Targets 2015; 15:14-26. [PMID: 25552257 DOI: 10.2174/1568009614666141229102254] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/17/2014] [Accepted: 12/19/2014] [Indexed: 12/15/2022]
Abstract
Targeting angiogenesis, one of the hallmarks of carcinogenesis, using non-toxic phytochemicals has emerged as a translational opportunity for angioprevention and to control advanced stages of malignancy. Herein, we investigated the inhibitory effects and associated mechanism/s of action of Procyanidin B2-3,3″-di- O-gallate (B2G2), a major component of grape seed extract, on human umbilical vein endothelial cells (HUVECs) and human prostate microvascular endothelial cells (HPMECs). Our results showed that B2G2 (10-40 μM) inhibits growth and induces death in both HUVECs and HPMECs. Additional studies revealed that B2G2 causes a G1 arrest in cell cycle progression of HUVECs by down-regulating cyclins (D1 and A), CDKs (Cdk2 and Cdc2) and Cdc25c phosphatase and up-regulating CDK inhibitors (p21 and p27) expression. B2G2 also induced strong apoptotic death in HUVECs through increasing p53, Bax and Smac/Diablo expression while decreasing Bcl-2 and survivin levels. Additionally, B2G2 inhibited the growth factors-induced capillary tube formation in HUVECs and HPMECs. Interestingly, conditioned media (CCM) from prostate cancer (PCA) cells (LNCaP and PC3) grown under normoxic (~21% O2) and hypoxic (1% O2) conditions significantly enhanced the tube formation in HUVECs, which was compromised in presence of conditioned media from B2G2-treated PCA cells. B2G2 also inhibited the motility and invasiveness of both HUVECs and HPMECs. Mechanistic studies showed that B2G2 targets VEGFR2/PI3K/Akt and integrin signaling molecules which are important for endothelial cells survival, proliferation, tube formation and motility. Overall, we report that B2G2 inhibits several attributes of angiogenesis in cell culture; therefore, it warrants further investigation for efficacy for angioprevention and cancer control.
Collapse
Affiliation(s)
| | | | | | | | - Chapla Agarwal
- University of Colorado Denver, 12850 E. Montview Blvd, C238, Aurora, CO 80045, USA.
| |
Collapse
|
30
|
Hu Z, Brooks SA, Dormoy V, Hsu CW, Hsu HY, Lin LT, Massfelder T, Rathmell WK, Xia M, Al-Mulla F, Al-Temaimi R, Amedei A, Brown DG, Prudhomme KR, Colacci A, Hamid RA, Mondello C, Raju J, Ryan EP, Woodrick J, Scovassi AI, Singh N, Vaccari M, Roy R, Forte S, Memeo L, Salem HK, Lowe L, Jensen L, Bisson WH, Kleinstreuer N. Assessing the carcinogenic potential of low-dose exposures to chemical mixtures in the environment: focus on the cancer hallmark of tumor angiogenesis. Carcinogenesis 2015; 36 Suppl 1:S184-202. [PMID: 26106137 PMCID: PMC4492067 DOI: 10.1093/carcin/bgv036] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 12/12/2014] [Accepted: 12/15/2014] [Indexed: 01/09/2023] Open
Abstract
One of the important 'hallmarks' of cancer is angiogenesis, which is the process of formation of new blood vessels that are necessary for tumor expansion, invasion and metastasis. Under normal physiological conditions, angiogenesis is well balanced and controlled by endogenous proangiogenic factors and antiangiogenic factors. However, factors produced by cancer cells, cancer stem cells and other cell types in the tumor stroma can disrupt the balance so that the tumor microenvironment favors tumor angiogenesis. These factors include vascular endothelial growth factor, endothelial tissue factor and other membrane bound receptors that mediate multiple intracellular signaling pathways that contribute to tumor angiogenesis. Though environmental exposures to certain chemicals have been found to initiate and promote tumor development, the role of these exposures (particularly to low doses of multiple substances), is largely unknown in relation to tumor angiogenesis. This review summarizes the evidence of the role of environmental chemical bioactivity and exposure in tumor angiogenesis and carcinogenesis. We identify a number of ubiquitous (prototypical) chemicals with disruptive potential that may warrant further investigation given their selectivity for high-throughput screening assay targets associated with proangiogenic pathways. We also consider the cross-hallmark relationships of a number of important angiogenic pathway targets with other cancer hallmarks and we make recommendations for future research. Understanding of the role of low-dose exposure of chemicals with disruptive potential could help us refine our approach to cancer risk assessment, and may ultimately aid in preventing cancer by reducing or eliminating exposures to synergistic mixtures of chemicals with carcinogenic potential.
Collapse
Affiliation(s)
- Zhiwei Hu
- To whom correspondence should be addressed. Tel: +1 614 685 4606; Fax: +1-614-247-7205;
| | - Samira A. Brooks
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Valérian Dormoy
- INSERM U1113, team 3 “Cell Signalling and Communication in Kidney and Prostate Cancer”, University of Strasbourg, Facultée de Médecine, 67085 Strasbourg, France
- Department of Cell and Developmental Biology, University of California, Irvine, CA 92697, USA
| | - Chia-Wen Hsu
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892-3375, USA
| | - Hsue-Yin Hsu
- Department of Life Sciences, Tzu-Chi University, Taiwan, Republic of China
| | - Liang-Tzung Lin
- Department of Microbiology and Immunology, Taipei Medical University, Taiwan, Republic of China
| | - Thierry Massfelder
- INSERM U1113, team 3 “Cell Signalling and Communication in Kidney and Prostate Cancer”, University of Strasbourg, Facultée de Médecine, 67085 Strasbourg, France
| | - W. Kimryn Rathmell
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Menghang Xia
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD 20892-3375, USA
| | - Fahd Al-Mulla
- Department of Life Sciences, Tzu-Chi University, Taiwan, Republic of China
| | | | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Firenze, Florence 50134, Italy
| | - Dustin G. Brown
- Department of Environmental and Radiological Health Sciences
, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523, USA
| | - Kalan R. Prudhomme
- Environmental and Molecular Toxicology, Environmental Health Science Center, Oregon State University, Corvallis, OR 97331, USA
| | - Annamaria Colacci
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna, Italy
| | - Roslida A. Hamid
- Faculty of Medicine and Health Sciences, University Putra, Serdang, Selangor, Malaysia
| | - Chiara Mondello
- Institute of Molecular Genetics, National Research Council, Pavia 27100, Italy
| | - Jayadev Raju
- Regulatory Toxicology Research Division, Bureau of Chemical Safety, Food Directorate
, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada
| | - Elizabeth P. Ryan
- Department of Environmental and Radiological Health Sciences
, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523, USA
| | - Jordan Woodrick
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, WashingtonDC 20057, USA
| | - A. Ivana Scovassi
- Institute of Molecular Genetics, National Research Council, Pavia 27100, Italy
| | - Neetu Singh
- Advanced Molecular Science Research Centre (Centre for Advance Research), King George’s Medical University, Lucknow, Uttar Pradesh 226003, India
| | - Monica Vaccari
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna, Italy
| | - Rabindra Roy
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, WashingtonDC 20057, USA
| | - Stefano Forte
- Mediterranean Institute of Oncology, Viagrande 95029, Italy
| | - Lorenzo Memeo
- Mediterranean Institute of Oncology, Viagrande 95029, Italy
| | - Hosni K. Salem
- Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt
| | - Leroy Lowe
- Getting to Know Cancer, Truro, Nova Scotia B2N 1X5, Canada
| | - Lasse Jensen
- Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden and
| | - William H. Bisson
- Environmental and Molecular Toxicology, Environmental Health Science Center, Oregon State University, Corvallis, OR 97331, USA
| | - Nicole Kleinstreuer
- Integrated Laboratory Systems, Inc., in support of the National Toxicology Program Interagency Center for the Evaluation of Alternative Toxicological Methods, NIEHS, MD K2-16, RTP, NC 27709, USA
| |
Collapse
|
31
|
Kodali A, Lim TC, Leong DT, Tong YW. Cell-microsphere constructs formed with human adipose-derived stem cells and gelatin microspheres promotes stemness, differentiation, and controlled pro-angiogenic potential. Macromol Biosci 2014; 14:1458-68. [PMID: 24986523 DOI: 10.1002/mabi.201400094] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 04/24/2014] [Indexed: 12/26/2022]
Abstract
Translation of stem cell therapies to clinical stage requires viable delivery vehicles that can control stem cell behavior. In this study, the suitability of gelatin microspheres (GMs) as such a tissue engineering platform for human adipose derived stem cells (ADSCs) is investigated. ADSCs on GMs, show a significant upregulation of well known pluripotent marker genes, together with the ability to differentiate into multiple cell lineages of adipocytes, osteocytes, and hepatocytes. In addition, the pro-angiogenic ability of ADSC-GMs is also enhanced compared to ADSCs on 2D culture plates. These results suggest that GMs can be a suitable culture platform for ADSCs with enhanced therapeutic potential.
Collapse
Affiliation(s)
- Anjaneyulu Kodali
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | | | | | | |
Collapse
|
32
|
Usui T, Naruo A, Okada M, Hayabe Y, Yamawaki H. Brain-derived neurotrophic factor promotes angiogenic tube formation through generation of oxidative stress in human vascular endothelial cells. Acta Physiol (Oxf) 2014; 211:385-94. [PMID: 24612679 DOI: 10.1111/apha.12249] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 12/03/2013] [Accepted: 01/30/2014] [Indexed: 12/15/2022]
Abstract
AIM Brain-derived neurotrophic factor (BDNF), a major type of neurotrophins, plays a role in the regulation of synaptic function. Recent studies suggest that BDNF promotes angiogenesis through its specific receptor, tropomyosin-related kinase B (TrkB). However, the detailed mechanisms for this still remain to be determined. Reactive oxygen species (ROS) generation contributes to the regulation of angiogenesis. Thus, we investigated the mechanisms by which BDNF regulates angiogenesis with focusing on ROS in cultured human vascular endothelial cells (ECs). METHODS AND RESULTS In human umbilical vein ECs, BDNF increased ROS generation as measured fluorometrically using 2' 7'-dichlorofluorescein diacetate as well as NADPH oxidase (NOX) activity as measured by lucigenin assay. BDNF-induced ROS generation and NOX activity were inhibited by K252a, a TrkB receptor inhibitor. BDNF induced phosphorylation of p47 phox, a regulatory component of NOX, which was inhibited by K252a as measured by Western blotting. BDNF increased angiogenic tube formation in ECs, which was completely inhibited by K252a or gp91ds-tat, a NOX inhibitor. BDNF caused Akt phosphorylation in ECs, which was inhibited by K252a or gp91ds-tat. CONCLUSION The present results for the first time demonstrate that BDNF induces NOX-derived ROS generation through activation of p47 phox in a TrkB receptor-dependent manner, which leads to the promotion of angiogenic tube formation possibly via Akt activation.
Collapse
Affiliation(s)
- T. Usui
- Laboratory of Veterinary Pharmacology; School of Veterinary Medicine; Kitasato University; Towada Aomori Japan
| | - A. Naruo
- Laboratory of Veterinary Pharmacology; School of Veterinary Medicine; Kitasato University; Towada Aomori Japan
| | - M. Okada
- Laboratory of Veterinary Pharmacology; School of Veterinary Medicine; Kitasato University; Towada Aomori Japan
| | - Y. Hayabe
- Laboratory of Veterinary Pharmacology; School of Veterinary Medicine; Kitasato University; Towada Aomori Japan
| | - H. Yamawaki
- Laboratory of Veterinary Pharmacology; School of Veterinary Medicine; Kitasato University; Towada Aomori Japan
| |
Collapse
|
33
|
Sokic S, Larson JC, Larkin SM, Papavasiliou G, Holmes TJ, Brey EM. Label-free nondestructive imaging of vascular network structure in 3D culture. Microvasc Res 2014; 92:72-8. [PMID: 24423617 DOI: 10.1016/j.mvr.2014.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 07/25/2013] [Accepted: 01/03/2014] [Indexed: 11/24/2022]
Abstract
Three-dimensional (3D) cell culture assays are important tools in the study of vessel assembly. Current techniques for quantitative analysis of vascular network structure have provided important insight into 3D vessel assembly. However, these methods typically require immunohistochemical staining, which requires sample destruction, or fluorescent cell labeling, which may alter cell behavior. The methods also may require sophisticated and expensive microscopy. More robust, easily quantifiable techniques are needed for imaging vascular networks non-invasively. We present an imaging method based on widefield optical sectioning and digital deconvolution (WOSD) that enables imaging of vascular networks in 3D culture without the use of cell labeling, staining, or sample destruction. WOSD can be performed using a standard optical microscope and allows non-invasive 3D monitoring of vascular network formation. This method is illustrated by imaging vascular networks in a 3D hydrogel system. WOSD enabled production of quantifiable 3D images of the network structure. Accuracy of the technique was evaluated by comparing data from WOSD with confocal images of fixed and fluorescently stained samples. Data for vessel length, diameter, and density are consistent between the two methods. The WOSD approach can be applied using standard laboratory equipment and shows great promise for use in analysis of 3D vascular network formation.
Collapse
Affiliation(s)
- Sonja Sokic
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | - Jeffery C Larson
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | | | - Georgia Papavasiliou
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | | | - Eric M Brey
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA; Research Service, Hines Veterans Administration Hospital, Hines, IL, USA.
| |
Collapse
|
34
|
Bekhite MM, Finkensieper A, Rebhan J, Huse S, Schultze-Mosgau S, Figulla HR, Sauer H, Wartenberg M. Hypoxia, Leptin, and Vascular Endothelial Growth Factor Stimulate Vascular Endothelial Cell Differentiation of Human Adipose Tissue-Derived Stem Cells. Stem Cells Dev 2014; 23:333-51. [DOI: 10.1089/scd.2013.0268] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Mohamed M. Bekhite
- Clinic of Internal Medicine I, Department of Cardiology, University Heart Center, Jena University Hospital, Jena, Germany
- Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt
| | - Andreas Finkensieper
- Clinic of Internal Medicine I, Department of Cardiology, University Heart Center, Jena University Hospital, Jena, Germany
| | - Jennifer Rebhan
- Clinic of Internal Medicine I, Department of Cardiology, University Heart Center, Jena University Hospital, Jena, Germany
| | - Stephanie Huse
- Clinic of Internal Medicine I, Department of Cardiology, University Heart Center, Jena University Hospital, Jena, Germany
| | - Stefan Schultze-Mosgau
- Department of Cranio-Maxillofacial Surgery and Plastic Surgery, Jena University Hospital, Jena, Germany
| | - Hans-Reiner Figulla
- Clinic of Internal Medicine I, Department of Cardiology, University Heart Center, Jena University Hospital, Jena, Germany
| | - Heinrich Sauer
- Department of Physiology, Faculty of Medicine, Justus Liebig University, Giessen, Germany
| | - Maria Wartenberg
- Clinic of Internal Medicine I, Department of Cardiology, University Heart Center, Jena University Hospital, Jena, Germany
| |
Collapse
|
35
|
Obika M, Vernon RB, Gooden MD, Braun KR, Chan CK, Wight TN. ADAMTS-4 and biglycan are expressed at high levels and co-localize to podosomes during endothelial cell tubulogenesis in vitro. J Histochem Cytochem 2013; 62:34-49. [PMID: 24051360 DOI: 10.1369/0022155413507727] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Proteolysis of the extracellular matrix influences vascular growth. We examined the expression of ADAMTS-1, -4, and -5 metalloproteinases and their proteoglycan substrates versican, decorin, and biglycan as human umbilical vein endothelial cells (HUVECs) formed tubes within type I collagen gels in vitro. Tubulogenic and control HUVEC cultures expressed low levels of ADAMTS-1 and -5 mRNAs, but ADAMTS-4 mRNA was relatively abundant and was significantly elevated (as was ADAMTS-4 protein) in tubulogenic cultures versus controls. Immunocytochemistry revealed ADAMTS-4 in f-actin- and cortactin-positive podosome-like puncta in single cells and mature tubes. Tubulogenic and control cultures expressed low levels of versican and decorin mRNAs; however, peak levels of biglycan mRNA were 400- and 16,000-fold that of versican and decorin, respectively. Biglycan mRNA was highest at 3 hr, declined steadily through day 7 and, at 12 hr and beyond, was significantly lower in tubulogenic cultures than in controls. Western blots of extracellular matrix from tubulogenic cultures contained bands corresponding to biglycan and its cleavage products. By immunocytochemistry, biglycan was found in the pericellular matrix surrounding endothelial tubes and in cell-associated puncta that co-localized with ADAMTS-4 and cortactin. Collectively, our results suggest that ADAMTS-4 and its substrate biglycan are involved in tubulogenesis by endothelial cells.
Collapse
Affiliation(s)
- Masanari Obika
- Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan (MO)
| | | | | | | | | | | |
Collapse
|
36
|
Abstract
Vascularization is one of the great challenges that tissue engineering faces in order to achieve sizeable tissue and organ substitutes that contain living cells. There are instances, such as skin replacement, in which a tissue-engineered substitute does not absolutely need a preexisting vascularization. However, tissue or organ substitutes in which any dimension, such as thickness, exceeds 400 μm need to be vascularized to ensure cellular survival. Consistent with the wide spectrum of approaches to tissue engineering itself, which vary from acellular synthetic biomaterials to purely biological living constructs, approaches to tissue-engineered vascularization cover numerous techniques. Those techniques range from micropatterns engineered in biomaterials to microvascular networks created by endothelial cells. In this review, we strive to provide a critical overview of the elements that must be considered in the pursuit of this goal and the major approaches that are investigated in hopes of achieving it.
Collapse
Affiliation(s)
- François A Auger
- Centre LOEX de l'Université Laval, Regenerative Medicine section of the FRQS Research Center of the CHU de Québec, Quebec, QC, Canada.
| | | | | |
Collapse
|
37
|
Engineering strategies to control vascular endothelial growth factor stability and levels in a collagen matrix for angiogenesis: the role of heparin sodium salt and the PLGA-based microsphere approach. Acta Biomater 2013; 9:7389-98. [PMID: 23523534 DOI: 10.1016/j.actbio.2013.03.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 03/12/2013] [Accepted: 03/13/2013] [Indexed: 02/02/2023]
Abstract
New vessel formation is the result of the complex orchestration of various elements, such as cells, signalling molecules and extracellular matrix (ECM). In order to establish the suitable conditions for an effective cell response, the influence of vascular endothelial growth factor (VEGF) complexation with heparin sodium salt (Hp) on its pro-angiogenic activity has been evaluated by an in vitro capillary-like tube formation assay. VEGF with or without Hp was embedded into collagen gels, and the activated matrices were characterized in terms of VEGF activity and release kinetics. Taking into account the crucial role of Hp in VEGF stability and activity, VEGF/Hp complex was then encapsulated into microspheres based on poly(lactide-co-glycolide) (PLGA), and microsphere properties, VEGF/Hp release kinetics and VEGF in vitro activity over time were evaluated. Integrated microsphere/collagen matrices were developed in order to provide a continuous release of active VEGF/Hp inside the matrix but also a VEGF gradient at the boundary, which is an essential condition for endothelial cell attraction and scaffold invasion. The results confirmed a strong influence of Hp on VEGF configuration and, consequently, on its activity, while the encapsulation of VEGF/Hp complex in PLGA-microspheres guaranteed a sustained release of active VEGF for more than 30days. This paper confirms the importance of VEGF stability and signal presentation to cells for an effective proangiogenic activity and highlights how the combination of two stabilizing approaches, namely VEGF/Hp complexation and entrapment within PLGA-based microspheres, may be a very effective strategy to achieve this goal.
Collapse
|
38
|
Raval Z, Losordo DW. Cell therapy of peripheral arterial disease: from experimental findings to clinical trials. Circ Res 2013; 112:1288-302. [PMID: 23620237 PMCID: PMC3838995 DOI: 10.1161/circresaha.113.300565] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 03/28/2013] [Indexed: 12/19/2022]
Abstract
The age-adjusted prevalence of peripheral arterial disease in the US population was estimated to approach 12% in 1985, and as the population ages, the overall population having peripheral arterial disease is predicted to rise. The clinical consequences of occlusive peripheral arterial disease include intermittent claudication, that is, pain with walking, and critical limb ischemia (CLI), which includes pain at rest and loss of tissue integrity in the distal limbs, which may ultimately lead to amputation of a portion of the lower extremity. The risk factors for CLI are similar to those linked to coronary artery disease and include advanced age, smoking, diabetes mellitus, hyperlipidemia, and hypertension. The worldwide incidence of CLI was estimated to be 500 to 1000 cases per million people per year in 1991. The prognosis is poor for CLI subjects with advanced limb disease. One study of >400 such subjects in the United Kingdom found that 25% required amputation and 20% (including some subjects who had required amputation) died within 1 year. In the United States, ≈280 lower-limb amputations for ischemic disease are performed per million people each year. The first objective in treating CLI is to increase blood circulation to the affected limb. Theoretically, increased blood flow could be achieved by increasing the number of vessels that supply the ischemic tissue with blood. The use of pharmacological agents to induce new blood vessel growth for the treatment or prevention of pathological clinical conditions has been called therapeutic angiogenesis. Since the identification of the endothelial progenitor cell in 1997 by Asahara and Isner, the field of cell-based therapies for peripheral arterial disease has been in a state of continuous evolution. Here, we review the current state of that field.
Collapse
Affiliation(s)
- Zankhana Raval
- Department of Medicine, Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | | |
Collapse
|
39
|
Bahramsoltani M, Slosarek I, De Spiegelaere W, Plendl J. Angiogenesis and collagen type IV expression in different endothelial cell culture systems. Anat Histol Embryol 2013; 43:103-15. [PMID: 23551189 DOI: 10.1111/ahe.12052] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 02/05/2013] [Indexed: 12/13/2022]
Abstract
In vitro angiogenesis assays constitute an important tool for studying the mechanisms of angiogenesis and for identification of pro- and anti-angiogenic substances. Therefore, endothelial cell and media systems used for in vitro angiogenesis assays are required to mimic the angiogenic process in vivo including endothelial capability to express collagen type IV as a component of the basement membrane. In this study, the expression of collagen type IV and its α chains (α1-6) was investigated in different endothelial cell culture systems in vitro qualitatively and quantitatively. These systems included four different batches of microvascular endothelial cells derived from the human skin, heart and lung, from which only two batches were found to be angiogenic and two batches were classified as non-angiogenic. Distribution of the transcripts of the α chains of collagen type IV was similar in all cell and media systems investigated. However, secretion and deposition of a stable extracellular network of collagen type IV could only be observed in the angiogenic cultures. In conclusion, the consecutive steps of the angiogenic cascade in vivo as well as in vitro depend on an increasing secretion and subsequent extracellular deposition of collagen type IV.
Collapse
Affiliation(s)
- M Bahramsoltani
- Faculty of Veterinary Medicine, Institute of Veterinary Anatomy, University of Leipzig, An den Tierkliniken 43, 04103, Leipzig, Germany
| | | | | | | |
Collapse
|
40
|
Abstract
Metabolic stimuli, pressure, and fluid shear stress (FSS) are major mediators of vascular plasticity. The exposure of the vessel wall to increased laminar FSS is the main trigger of arteriogenesis, the remodelling of pre-existent arterio-arteriolar anastomoses to functional conductance arteries. In this study, we have used an in vitro bioreactor to investigate cell-specific interactions, molecular mechanisms as well as time-dependent effects under laminar FSS conditions. This bioreactor termed “artificial artery” can be used for screening potential arterio-protective substances, pro-arteriogenic factors, and for investigating biomarkers of cardiovascular diseases such as cardiac diseases. The bioreactor is built up out of 14 hollow fiber membranes colonized with endothelial cells (HUVECs) on the inside and smooth muscle cells (HUASMCs) on the outside. By means of Hoechst 33342 staining as well as immunocytochemistry of ß-catenin and α-smooth-muscle-actin, a microporous polypropylene membrane was characterized as being the appropriate polymer for co-colonization. Defined arterial flow conditions (0.1 N/m2 and 3 N/m2), metabolic exchange, and cross-talk of HUVECs and HUASMCs through hollow fibers mimic physiological in vivo conditions of the vasculature. Analysing mono- and co-culture secretomes by MALDI-TOF-TOF mass spectrometry, we could show that HUVECs secreted Up4A upon 3 N/m2. A constant cellular secretion of randomly chosen peptides verified viability of the “artificial artery” for a cultivation period up to five days. qRT-PCR analyses revealed an up-regulation of KLF2 and TIMP1 as mechano-regulated genes and demonstrated arterio-protective, homeostatic FSS conditions by a down-regulation of EDN1. Expression analyses of VWF and EDN1 furthermore confirmed that RNA of both cell types could separately be isolated without cross-contamination. CCND1 mRNA expression in HUVECs did not change upon FSS indicating a quiescent endothelial phenotype. Taken together, the “artificial artery” provides a solid in vitro model to test pharmacological active compounds for their impact on arterio-damaging or arterio-protective properties on vascular response.
Collapse
|
41
|
Profirovic J, Strekalova E, Urao N, Krbanjevic A, Andreeva AV, Varadarajan S, Fukai T, Hen R, Ushio-Fukai M, Voyno-Yasenetskaya TA. A novel regulator of angiogenesis in endothelial cells: 5-hydroxytriptamine 4 receptor. Angiogenesis 2012; 16:15-28. [PMID: 22903372 DOI: 10.1007/s10456-012-9296-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Accepted: 08/07/2012] [Indexed: 01/09/2023]
Abstract
The 5-hydroxytryptamine type 4 receptor (5-HT(4)R) regulates many physiological processes, including learning and memory, cognition, and gastrointestinal motility. Little is known about its role in angiogenesis. Using mouse hindlimb ischemia model of angiogenesis, we observed a significant reduction of limb blood flow recovery 14 days after ischemia and a decrease in density of CD31-positive vessels in adductor muscles in 5-HT(4)R(-/-) mice compared to wild type littermates. Our in vitro data indicated that 5-HT(4)R endogenously expressed in endothelial cells (ECs) may promote angiogenesis. Inhibition of the receptor with 5-HT(4)R antagonist RS 39604 reduced EC capillary tube formation in the reconstituted basement membrane. Using Boyden chamber migration assay and wound healing "scratch" assay, we demonstrated that RS 39604 treatment significantly suppressed EC migration. Transendothelial resistance measurement and immunofluorescence analysis showed that a 5-HT(4)R agonist RS 67333 led to an increase in endothelial permeability, actin stress fiber and interendothelial gap formation. Importantly, we provided the evidence that 5-HT(4)R-regulated EC migration may be mediated by Gα13 and RhoA. Our results suggest a prominent role of 5-HT(4)R in promoting angiogenesis and identify 5-HT(4)R as a potential therapeutic target for modulating angiogenesis under pathological conditions.
Collapse
Affiliation(s)
- Jasmina Profirovic
- Department of Pharmacology, College of Medicine, University of Illinois, Chicago, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Shin HY, Underwood RM, Fannon MW. Fluid pressure is a magnitude-dependent modulator of early endothelial tubulogenic activity: implications related to a potential tissue-engineering control parameter. Tissue Eng Part A 2012; 18:2590-600. [PMID: 22793042 DOI: 10.1089/ten.tea.2011.0588] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A significant barrier to the success of engineered tissues is the inadequate transport of nutrients and gases to, and waste away from, cells within the constructs, after implantation. Generation of microtubular networks by endothelial cells in engineered constructs to mimic the in vivo transport scheme is essential for facilitating tissue survival by promoting the in vitro formation of microvessels that integrate with host microvasculature, after implantation. Previously, we reported that select pressures stimulate endothelial proliferation involving protubulogenic molecules such as fibroblast growth factor-2 (FGF-2) and vascular endothelial growth factor-C (VEGF-C). Based on this, we investigated fluid pressure as a selective modulator of early tubulogenic activity with the intent of assessing the potential utility of this mechanical stimulus as a tissue-engineering control parameter. For this purpose, we used a custom pressure system to expose two-dimensional (2D) and three-dimensional (3D) cultures of endothelial cells to static pressures of 0 (controls), 20, or 40 mmHg for 3 days. Compared to controls, 2D endothelial cultures exposed to 20, but not 40 mmHg, exhibited significantly (p<0.05) enhanced cell growth that depended on VEGF receptor-3 (VEGFR-3), a receptor for VEGF-C. Moreover, endothelial cells grown on microbeads and suspended in 3D collagen gels under 20 mmHg, but not 40 mmHg, displayed significantly (p<0.05) increased sprout formation. Interestingly, pressure-dependent proliferation and sprout formation occurred in parallel with pressure-sensitive upregulation of VEGF-C and VEGFR-3 expression and were sensitive to local FGF-2 levels. Collectively, the results of the present study provided evidence that early endothelial-related tubulogenic activity depends on local hydrostatic pressure levels in the context of local growth factor conditions. In addition to relevance to microvascular diseases associated with interstitial hypertension (e.g., cancer and glaucoma), these findings provided first insight into the potential utility of hydrostatic pressure as a fine-tune control parameter to optimize microvascularization of tissue-engineering constructs in the in vitro setting before their implantation.
Collapse
Affiliation(s)
- Hainsworth Y Shin
- Center for Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506-0070, USA
| | | | | |
Collapse
|
43
|
Jian Y, Tian X, Li Q, Li B, Peng Z. Comparison of methods for staining microvessels in bone. Biotech Histochem 2012; 87:428-31. [PMID: 22762211 DOI: 10.3109/10520295.2012.696701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Detection of microvessels is critical for studying bone tissue. We developed an intravascular ink-based method coupled with Van Gieson (VG) staining and compared it with other commonly used methods for capillary visualization. The ink perfusate was formulated as 10% ink, 10% formaldehyde and 20% mannitol. The ink solution was perfused into a healthy goat and the tibia was subjected to decalcification, dehydration, paraffin embedding, de-waxing and staining to observe microvessels. Angiogenesis was assessed by vascular area image analysis and the hematoxylin and eosin (HE), Masson, and VG staining techniques were compared to determine the reliability of these methods for counting microvessels. We found that HE, Masson, and VG staining produced poor contrast between the microvessels and surrounding tissues. By contrast, ink coupled with VG staining permitted clear discrimination between the microvessels and surrounding tissues. Our results indicate that ink-VG staining could be more useful than other methods for detecting tissue microvessels.
Collapse
Affiliation(s)
- Yuekui Jian
- Department of Orthopaedics, Guizhou Provincial People's Hospital, Guiyang, China
| | | | | | | | | |
Collapse
|
44
|
Tulio AZ, Chang C, Edirisinghe I, White KD, Jablonski JE, Banaszewski K, Kangath A, Tadapaneni RK, Burton-Freeman B, Jackson LS. Berry fruits modulated endothelial cell migration and angiogenesis via phosphoinositide-3 kinase/protein kinase B pathway in vitro in endothelial cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:5803-5812. [PMID: 22448669 DOI: 10.1021/jf3001636] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polyphenolic-rich berry fruits are known to activate redox-sensitive cellular signaling molecules such as phosphatidylinositol-3-kinase (PI3 kinase)/kinase B (Akt), resulting in a cascade of downstream signaling pathways. This study investigated the ability of strawberry (SB), wild blueberry (WBB), and cranberry (CB) extracts to induce the activation of PI3 kinase/Akt signaling in vitro in human umbilical endothelial cells (HUVECs) and whether this activation would enhance cell migration and angiogenesis. Anthocyanin profiles of the extracts were characterized using HPLC-ESI/MS, and Akt activation was investigated using the Alpha Screen SureFire assay. The total anthocyanin contents of SB, WBB, and CB extracts were 81.7, 82.5, and 83.0 mg/100 g fresh weight, respectively. SB, WBB, and CB extracts activated Akt in a dose-dependent manner via PI3 kinase and induced cell migration and angiogenesis in vitro in HUVECs. The results from this study suggest that polyphenolics in berry fruits may play a role in promoting vascular health.
Collapse
Affiliation(s)
- Artemio Z Tulio
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration , 6502 South Archer Road, Bedford Park, Illinois 60501, United States
| | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Stevenson CE, Nagahashi M, Ramachandran S, Yamada A, Bear HD, Takabe K. Bevacizumab and breast cancer: what does the future hold? Future Oncol 2012; 8:403-14. [PMID: 22515444 PMCID: PMC3464486 DOI: 10.2217/fon.12.22] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Breast cancer is a major health concern for many women, but despite the current standard therapies, many women still die of metastatic disease. Angiogenesis has been evaluated as a possible target for therapy and bevacizumab (Avastin(®), Genentech/Roche, CA, USA), a monoclonal antibody against VEGF-A, has been developed to target this. Current clinical trials utilizing bevacizumab have shown an increase in progression-free survival, but this has not translated to an increase in overall survival in breast cancer patients. In this article, we summarize the currently published trials utilizing bevacizumab in the treatment of breast cancer and describe various methods of measuring angiogenesis in vitro and in vivo. We also describe the related process of lymphangiogenesis, as this may contribute to the mechanism of cancer progression and may be a potential target for therapy in the future. Understanding these processes may help us develop new treatments for breast cancer.
Collapse
Affiliation(s)
- Christina E Stevenson
- Department of Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA
| | | | | | | | | | | |
Collapse
|
46
|
Strulson MK, Johnson DM, Maurer JA. Increased stability of glycol-terminated self-assembled monolayers for long-term patterned cell culture. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4318-24. [PMID: 22316394 PMCID: PMC3295894 DOI: 10.1021/la2035533] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Self-assembled monolayers (SAMs) are widely used to confine proteins and cells to a pattern to study cellular processes and behavior. To fully explore some of these phenomena, it is necessary to control cell growth and confinement for several weeks. Here, we present a simple method by which protein and cellular confinement to a pattern can be maintained for more than 35 days. This represents a significant increase in pattern stability compared to previous monolayer systems and is achieved using an amide-linked glycol monomer on 50 Å titanium/100 Å gold-coated glass coverslips. In addition, this study provides insight into the method of SAM degradation and excludes interfacial mixing of the monomers and blooming of the adlayer as major mechanisms for SAM degradation.
Collapse
Affiliation(s)
| | | | - Joshua A. Maurer
- Corresponding Author Joshua A. Maurer, , Phone: 314-935-4695, Fax: 314-935-4481
| |
Collapse
|
47
|
Sarkanen JR, Vuorenpää H, Huttala O, Mannerström B, Kuokkanen H, Miettinen S, Heinonen T, Ylikomi T. Adipose Stromal Cell Tubule Network Model Provides a Versatile Tool for Vascular Research and Tissue Engineering. Cells Tissues Organs 2012; 196:385-97. [DOI: 10.1159/000336679] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2012] [Indexed: 11/19/2022] Open
|
48
|
Nees S, Weiss DR, Senftl A, Knott M, Förch S, Schnurr M, Weyrich P, Juchem G. Isolation, bulk cultivation, and characterization of coronary microvascular pericytes: the second most frequent myocardial cell type in vitro. Am J Physiol Heart Circ Physiol 2011; 302:H69-84. [PMID: 22037185 DOI: 10.1152/ajpheart.00359.2011] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Densely arranged pericytes engird the endothelial tube of all coronary microvessels. Since the experimental access to these abundant cells in situ is difficult, a prerequisite for broader investigation is the availability of sufficient numbers of fully differentiated pericytes in homogenous culture. To reach this goal, we applied strictly standardized cell isolation techniques, optimized culture methods and specific histological staining. Approximately 1,000-fold enriched pericytes were proteolytically detached from highly purified coronary microvascular networks (density gradient centrifugation) of eight mammalian species including human. Addition of species-autologous fetal or neonatal serum (10-20% vol/vol) was a precondition for longer term survival of homogenous pericyte cultures. This ensured optimal growth (doubling time <14 h) and full expression of pericyte-specific markers. In 3-mo, 10(10) pericytes (15 g) could be cultivated from 1 bovine heart. Pericytes could be stored in liquid N(2), recultured, and passaged repeatedly without loss of typical features. In cocultures with EC or vascular smooth muscle cells, pericytes transferred fluorescent calcein to each other and to EC via their antler-like extensions, organized angiogenetic sprouting of vessels, and rapidly activated coagulation factors X and II via tissue factor and prothrombinase. The interconnected pericytes of the coronary system are functionally closely correlated with the vascular endothelium and may play key roles in the adjustment of local blood flow, the regulation of angiogenic processes, and the induction of procoagulatory processes. Their successful bulk cultivation enables direct experimental access under defined in vitro conditions and the isolation of pericyte specific antigens for the production of specific antibodies.
Collapse
Affiliation(s)
- Stephan Nees
- Department of Physiology, University of Munich, Ludwig Maximilian University Munich, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Abstract
Angiogenesis is very important for many physiological and pathological processes. However, the molecular mechanisms of angiogenesis are unclear. To elucidate the molecular mechanisms of angiogenesis and to develop treatments for "angiogenesis- dependent" diseases, it is essential to establish a suitable in vitro angiogenesis model. In this study, we created a novel in vitro angiogenesis model based on a microfluidic device. Our model provides an in vivo-like microenvironment for endothelial cells (ECs) cultures and monitors the response of ECs to changes in their microenvironment in real time. To evaluate the potential of this microfluidic device for researching angiogenesis, the effects of pro-angiogenic factors on ECs proliferation, migration and tube-like structure formation were investigated. Our results showed the proliferation rate of ECs in 3D matrix was significantly promoted by the pro-angiogenic factors (with an increase of 59.12%). With the stimulation of pro-angiogenic factors gradients, ECs directionally migrated into the Matrigel from low concentrations to high concentrations and consequently formed multi-cell chords and tube-like structures. These results suggest that the device can provide a suitable platform for elucidating the mechanisms of angiogenesis and for screening pro-angiogenic or anti-angiogenic drugs for "angiogenesis-dependent" diseases.
Collapse
|
50
|
Pirlo RK, Wu P, Liu J, Ringeisen B. PLGA/hydrogel biopapers as a stackable substrate for printing HUVEC networks via BioLP. Biotechnol Bioeng 2011; 109:262-73. [PMID: 21830203 DOI: 10.1002/bit.23295] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 07/22/2011] [Accepted: 08/03/2011] [Indexed: 01/05/2023]
Abstract
Two major challenges in tissue engineering are mimicking the native cell-cell arrangements of tissues and maintaining viability of three-dimension (3D) tissues thicker than 300 µm. Cell printing and prevascularization of engineered tissues are promising approaches to meet these challenges. However, the printing technologies used in biofabrication must balance the competing parameters of resolution, speed, and volume, which limit the resolution of thicker 3D structures. We suggest that high-resolution conformal printing techniques can be used to print 2D patterns of vascular cells onto biopaper substrates which can then be stacked to form a thicker tissue construct. Towards this end we created 1 cm × 1 cm × 300 µm biopapers to be used as the transferable, stackable substrate for cell printing. 3.6% w/v poly-lactide-co-glycolide was dissolved in chloroform and poured into molds filled with NaCl crystals. The salt was removed with DI water and the scaffolds were dried and loaded with a Collagen Type I or Matrigel. SEM of the biopapers showed extensive porosity and gel loading throughout. Biological laser printing (BioLP) was used to deposit human umbilical vein endothelial cells (HUVEC) in a simple intersecting pattern to the surface of the biopapers. The cells differentiated and stretched to form networks preserving the printed pattern. In a separate experiment to demonstrate "stackability," individual biopapers were randomly seeded with HUVECs and cultured for 1 day. The mechanically stable and viable biopapers were then stacked and cultured for 4 days. Three-dimensional confocal microscopy showed cell infiltration and survival in the compound multilayer constructs. These results demonstrate the feasibility of stackable "biopapers" as a scaffold to build 3D vascularized tissues with a 2D cell-printing technique.
Collapse
Affiliation(s)
- Russell Kirk Pirlo
- National Research Council Research Associate, Washington, Districto of Columbia 20001, USA
| | | | | | | |
Collapse
|