2
|
Li Y, Ou K, Wang Y, Luo L, Chen Z, Wu J. TLR9 agonist suppresses choroidal neovascularization by restricting endothelial cell motility via ERK/c-Jun pathway. Microvasc Res 2022; 141:104338. [PMID: 35150733 DOI: 10.1016/j.mvr.2022.104338] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/08/2022] [Accepted: 02/07/2022] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Choroidal neovascularization (CNV) is the feature of neovascular age-related macular degeneration (AMD). It has been demonstrated that inflammation plays a key role in the development of CNV. Here we aim to investigate how TLR9 agonist (CpG-ODN), one of the key regulators of inflammatory responses, suppresses CNV in vivo. MATERIALS AND METHODS The cell viability was assessed by MTT and EdU test after CpG-ODN treatment. Endothelial cells gap assay, tube formation assay and transwell assay were practiced to observe how CpG-ODN affected the endothelial cells functions. The choroidal explants and laser-induced CNV model were built to investigate how CpG-ODN suppressed angiogenesis. The ERK and c-Jun expression were evaluated to assess if CpG-ODN affected cell proliferation. Flow cytometry and qPCR was practiced to observe how CpG-ODN regulated cell proliferation. RESULTS Our data showed that CpG-ODN not only reduced CNV area in vivo, but also decreased the RPE damage. CpG-ODN inhibited endothelial cells from migration and forming tubes, while the effect was not toxic. EdU test and MTT test suggested that CpG-ODN inhibited endothelial cells proliferation. CpG-ODN significantly increased protein expression of phosphorylated c-Jun but reduced phosphorylated ERK in HUVECs, which was confirmed in ERK transfected 293T cells. JNK inhibitor abolished the suppression of endothelial cells migration and tube formation by CpG-ODN. The findings were also in agreement with the observation in CpG-ODN treated CNV eyes in vivo. The flow cytometry and qPCR data revealed that the suppression of cell motility by CpG-ODN was achieved by arresting endothelial cells cell cycle at G0/G1 phase. CONCLUSIONS Our study demonstrated that CpG-ODN suppressed endothelial cell motility by restricting the cell cycle progression at G0/G1 phase, the effect of which was achieved by interacting with ERK/c-Jun pathways.
Collapse
Affiliation(s)
- Youjian Li
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and Sciences, Chongqing, China
| | - Kepeng Ou
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and Sciences, Chongqing, China
| | - Yuwei Wang
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China
| | - Liying Luo
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China
| | - Zhongzhu Chen
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and Sciences, Chongqing, China
| | - Jiahui Wu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China.
| |
Collapse
|
3
|
Zayed A, Mansour MK, Sedeek MS, Habib MH, Ulber R, Farag MA. Rediscovering bacterial exopolysaccharides of terrestrial and marine origins: novel insights on their distribution, biosynthesis, biotechnological production, and future perspectives. Crit Rev Biotechnol 2021; 42:597-617. [PMID: 34320886 DOI: 10.1080/07388551.2021.1942779] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Bacteria exist in colonies as aggregates or associated with surfaces forming biofilms rather than planktonic cells. Living in such a unique manner is always mediated via a matrix of extracellular polymeric substances, which are composed mainly of polysaccharides or specifically exopolysaccharides (EPS). Biofilm formation and hence EPS production are affected by biotic and abiotic factors inducing/inhibiting several involved genes and other molecules. In addition, various aspects of bacterial EPS regarding: physiological functions, molecular weight, and chemical composition were demonstrated. Recent investigations have revealed a wide spectrum of EPS chemical and physicochemical properties showing promising applications in different industrial sectors. For instance, lactic acid bacteria (LAB)- and marine-derived EPS exhibit: immunomodulatory, antioxidant, antitumor, bioremediation of heavy metals, as well as thickening and viscosity modifiers in the food industry. However, bacterial EPS have not yet been commercially implemented, in contrast to plant-derived analogues. The current review aims to rediscover the EPS structural and biosynthetic features derived from marine and terrestrial bacteria, and applications as well.
Collapse
Affiliation(s)
- Ahmed Zayed
- Pharmacognosy Department, College of Pharmacy, Tanta University, Tanta, Egypt.,Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Kaiserslautern, Germany
| | - Mai K Mansour
- Department of Medicinal Plants and Natural Products, National Organization for Drug Control and Research, Giza, Egypt
| | - Mohamed S Sedeek
- Pharmacognosy Department, College of Pharmacy, Cairo University, Cairo, Egypt
| | - Mohamed H Habib
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Roland Ulber
- Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Kaiserslautern, Germany
| | - Mohamed A Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Cairo, Egypt.,Chemistry Department, School of Sciences and Engineering, The American University in Cairo, New Cairo, Egypt
| |
Collapse
|
4
|
Use of Human Umbilical Vein Endothelial Cells (HUVEC) as a Model to Study Cardiovascular Disease: A Review. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10030938] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cardiovascular disease (CVD) is the leading cause of death worldwide, and extensive research has been performed to understand this disease better, using various experimental models. The endothelium plays a crucial role in the development of CVD, since it is an interface between bloodstream components, such as monocytes and platelets, and other arterial wall components. Human umbilical vein endothelial cell (HUVEC) isolation from umbilical cord was first described in 1973. To date, this model is still widely used because of the high HUVEC isolation success rate, and because HUVEC are an excellent model to study a broad array of diseases, including cardiovascular and metabolic diseases. We here review the history of HUVEC isolation, the HUVEC model over time, HUVEC culture characteristics and conditions, advantages and disadvantages of this model and finally, its applications in the area of cardiovascular diseases.
Collapse
|
5
|
Kim SW, Choi JW, Lee CY, Lee J, Shin S, Lim S, Lee S, Kim IK, Lee HB, Hwang KC. Effects of donor age on human adipose-derived adherent stromal cells under oxidative stress conditions. J Int Med Res 2017; 46:951-964. [PMID: 28984178 PMCID: PMC5972239 DOI: 10.1177/0300060517731684] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Objective Adipose-derived stromal vascular fractions (SVFs) are heterogeneous complex populations of cells with therapeutic efficacy for tissue generation and vascular stabilization. SVFs have cardiomyogenic potential, and many researchers have examined the possibility of SVF transplantation for heart disease. In cell-based therapies, donor age affects the regenerative capability, cell yield, and differentiation potential of adult tissues; however, opposing or controversial results have been found in humans. We examined whether SVF transplantation into impaired heart tissue shows differential effects according to donor age. Methods We investigated differences in protein expression in human umbilical vein endothelial cells (HUVECs) co-cultured with adipose-derived adherent stromal cells (ADASs) from donors of different ages [>40-year-olds (40s group) and >60-year-olds (60s group)] under oxidative stress conditions. Results Although co-culturing HUVECs with ADASs ameliorated inflammation due to increased oxidative stress conditions, few differences were observed between the ADASs from the 40s and 60s groups. Moreover, the Database for Annotation, Visualization, and Integrated Discovery classification tool revealed differentially expressed genes in the Kyoto Encyclopedia of Genes and Genomes pathway associated with cytokine–cytokine receptor interaction in response to ADASs. Conclusion Protein expression profiles were unchanged in HUVECs induced by isolated ADASs from donors of different ages under oxidative stress conditions.
Collapse
Affiliation(s)
- Sang Woo Kim
- 1 395886 Catholic Kwandong University, International St. Mary's Hospital , Incheon Metropolitan City, Republic of Korea.,2 Institute for Bio-Medical Convergence, 54671 College of Medicine, Catholic Kwandong University , Gangneung-si, Gangwon-do, Republic of Korea
| | - Jung-Won Choi
- 2 Institute for Bio-Medical Convergence, 54671 College of Medicine, Catholic Kwandong University , Gangneung-si, Gangwon-do, Republic of Korea.,3 Department of Health and Environment, College of Engineering, Catholic Kwandong University, Gangneung-si, Gangwon-do, Republic of Korea
| | - Chang Youn Lee
- 4 Department of Integrated Omics for Biomedical Sciences, Graduate School, Yonsei University, Seoul, Republic of Korea
| | - Jiyun Lee
- 5 Brain Korea 21 PLUS Project for Medical Science, 37991 Yonsei University College of Medicine , Seoul, Republic of Korea
| | - Sunhye Shin
- 4 Department of Integrated Omics for Biomedical Sciences, Graduate School, Yonsei University, Seoul, Republic of Korea
| | - Soyeon Lim
- 1 395886 Catholic Kwandong University, International St. Mary's Hospital , Incheon Metropolitan City, Republic of Korea.,2 Institute for Bio-Medical Convergence, 54671 College of Medicine, Catholic Kwandong University , Gangneung-si, Gangwon-do, Republic of Korea
| | - Seahyoung Lee
- 1 395886 Catholic Kwandong University, International St. Mary's Hospital , Incheon Metropolitan City, Republic of Korea.,2 Institute for Bio-Medical Convergence, 54671 College of Medicine, Catholic Kwandong University , Gangneung-si, Gangwon-do, Republic of Korea
| | - Il-Kwon Kim
- 2 Institute for Bio-Medical Convergence, 54671 College of Medicine, Catholic Kwandong University , Gangneung-si, Gangwon-do, Republic of Korea.,6 Cell Therapy Center, 395886 Catholic Kwandong University, International St. Mary's Hospital , Incheon Metropolitan City, Republic of Korea
| | - Hoon-Bum Lee
- 7 Department of Plastic and Reconstructive Surgery, 395886 Catholic Kwandong University, International St. Mary's Hospital , Incheon Metropolitan City, Republic of Korea
| | - Ki-Chul Hwang
- 1 395886 Catholic Kwandong University, International St. Mary's Hospital , Incheon Metropolitan City, Republic of Korea.,2 Institute for Bio-Medical Convergence, 54671 College of Medicine, Catholic Kwandong University , Gangneung-si, Gangwon-do, Republic of Korea
| |
Collapse
|