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Li Z, Zhou KW, Chen F, Shang F, Wu MX. Celastrol inhibits laser-induced choroidal neovascularization by decreasing VEGF induced proliferation and migration. Int J Ophthalmol 2022; 15:1221-1230. [PMID: 36017049 DOI: 10.18240/ijo.2022.08.01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 04/13/2022] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate celastrol's effect on choroidal neovascularization (CNV). METHODS In this study, neovascular formation in vitro (tube formation and aortic ring culture) and in vivo (laser induced neovascular in mice) was treated with celastrol to evaluate this natural compound's impact on CNV. Western blot was applied to explore the possible mechanism for it. For in vitro assay, triplicate for each group was repeated at least three times. For in vivo assay, each group contains 5 mice. RESULTS Celastrol supressed tube formation and aortic ring sprout neovascularization. In vitro assay exhibited that celastrol inhibiting vascular endothelial growth factor (VEGF)-induced proliferation and migration of human umbilical vein endothelial cells and human choroidal endothelial cells, and by blocking VEGF signaling. Furthermore, intraperitoneal administration of celastrol significantly reduced the area of laser-induced CNV in an in vivo mouse model. By day 14, the area of CNV had decreased by 49.15% and 80.26% in the 0.1 mg/kg celastrol-treated group (n=5) and in the 0.5 mg/kg celastrol treated group (n=5), respectively, compared to the vehicle-treated group (n=5). CONCLUSION Celastrol inhibits CNV by inhibiting VEGF-induced proliferation and migration of vascular endothelial cells, indicating that celastrol is a potent, natural therapeutic compound for the prevention of CNV.
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Affiliation(s)
- Zhen Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Ke-Wen Zhou
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China.,Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
| | - Fang Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Fu Shang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Ming-Xing Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
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Yu H, Zhou C, Hu D, Li C, Wang Q, Xue W, Peng A. Uremic toxin indoxyl sulfate induces dysfunction of vascular smooth muscle cells via integrin-β1/ERK signaling pathway. Clin Exp Nephrol 2022; 26:640-648. [PMID: 35333997 DOI: 10.1007/s10157-022-02195-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 02/03/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Protein-bound uremic toxins (PBUTs) are reported to be one of the major culprits in chronic kidney disease-cardiovascular disease (CKD-CVD) development, yet its mechanism is not fully clear. Our previous study confirmed elevated expression of integrin-β1 (ITGβ1) in vascular smooth muscle cells of uremic patients. Thus, this study aimed to explore the relationship between PBUTs and ITGβ1 in uremic vasculature injury. METHODS Human umbilical vein smooth muscle cells (HUVSMCs) and endothelial cells (HUVECs) were treated with two representative PUBTs, indoxyl sulfate (IS) and p-cresyl sulfate (PC). Both cells were measured for the expression of ITGβ1 and downstream signaling pathways and assayed for proliferation, migration, adhesion and apoptosis. RESULTS The IS treatments were observed with significantly up-regulated ITGβ1 in HUVSMCs but not in HUVECs, while PC did not induce ITGβ1 alteration in either HUVSMCs or HUVECs. Furthermore, overexpression of ITGβ1 revealed activated downstream signal-regulated kinase (ERK) signaling pathway with promoted focal adhesion, migration, proliferation but no apoptosis in HUVSMCs by IS. These functional and pathway alterations could be significantly suppressed by RNA interference of ITGβ1. More importantly, the application of ERK1/2 inhibitor significantly suppressed the focal adhesion, migration and proliferation of HUVSMCs. CONCLUSION We first demonstrated that ITGβ1/ERK signaling pathway mediated abnormal focal adhesion, migration and proliferation of vascular smooth muscle cells stimulated by IS. ITGβ1/ERK signaling may serve as a novel therapeutic target for CKD-CVD.
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Affiliation(s)
- Haibo Yu
- Division of Nephrology, Center for Nephrology and Clinical Metabolomics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Chunyu Zhou
- Division of Nephrology, Center for Nephrology and Clinical Metabolomics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Dayong Hu
- Division of Nephrology, Center for Nephrology and Clinical Metabolomics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Changbin Li
- Division of Nephrology, Center for Nephrology and Clinical Metabolomics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Qiang Wang
- Department of Nephrology, Qilu Hospital of Shandong University (Qingdao), Qingdao, People's Republic of China
| | - Wen Xue
- Division of Nephrology, Center for Nephrology and Clinical Metabolomics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
| | - Ai Peng
- Division of Nephrology, Center for Nephrology and Clinical Metabolomics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
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Li ZH, Zhou Y, Ding YX, Guo QL, Zhao L. Roles of integrin in tumor development and the target inhibitors. Chin J Nat Med 2019; 17:241-251. [PMID: 31076128 DOI: 10.1016/s1875-5364(19)30028-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Indexed: 01/05/2023]
Abstract
Integrin is a large family of cell adhesion molecules (CAMs) which involves in the interaction of cells/cells and cells/ extracellular matrix (ECM) to mediate cell proliferation, differentiation, adhesion, migration, etc. In recent years, aberrant expression of integrin has been clearly found in many tumor studies, indicating that integrin is closely related to tumor formation and development. Meanwhile, it has effects on tumor cell differentiation, cell migration, proliferation and tumor neovascularization. The study of drugs targeting integrins is of great significance for the clinical treatment of tumors. Because of its important role in tumorigenesis and development, integrin has become a promising target for the treatment of cancer. This review summarizes the role of integrin in tumor development and the current state of integrin inhibitors to provide a valuable reference for subsequent research.
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Affiliation(s)
- Zhao-He Li
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, China
| | - You Zhou
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, China
| | - You-Xiang Ding
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, China
| | - Qing-Long Guo
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, China
| | - Li Zhao
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, China.
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Gao Y, Zhou S, Pang L, Yang J, Li HJ, Huo X, Qian SY. Celastrol suppresses nitric oxide synthases and the angiogenesis pathway in colorectal cancer. Free Radic Res 2019; 53:324-334. [PMID: 30773944 DOI: 10.1080/10715762.2019.1575512] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The thunder god vine (Tripterygium wilfordii Hook. F) is traditionally used for inflammation-related diseases in traditional Chinese medicine. In recent years, celastrol (a natural compound from the root of the thunder god vine) has attracted great interest for its potential anticancer activities. The free radical nitric oxide (NO) is known to play a critical role in colorectal cancer growth by promoting tumour angiogenesis. However, how celastrol influences the NO pathway and its mechanism against colorectal cancer is largely unknown. In this study, we investigated the effects and mechanism of celastrol on nitric oxide synthase (NOS) and the angiogenesis pathway in colorectal cancer. Our data show that celastrol inhibited HT-29 and HCT116 cell proliferation, migration, and NOS activity in the cytoplasm. The antiproliferation activity of celastrol was associated with the inhibition of iNOS and eNOS in colorectal cancer cells. Treatment with celastrol inhibited colorectal cancer cell growth and migration, and was associated with suppression of the expression of key genes (TYMP, CDH5, THBS2, LEP, MMP9, and TNF) and proteins (IL-1b, MMP-9, PDGF, Serpin E1, and TIMP-4) involved in the angiogenesis pathway. In addition, combinational use of celastrol with 5-fluorouracil, salinomycin, 1400 W, and L-NIO showed enhanced inhibition of colorectal cancer cell proliferation and migration. In sum, our study suggests that celastrol could suppress colorectal cancer cell growth and migration, likely through suppressing NOS activity and inhibiting the angiogenesis pathway.
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Affiliation(s)
- Yanfeng Gao
- a Department of Anesthesiology , the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, China
| | - Shuang Zhou
- b Department of Neurosurgery , Neuroscience Institute, Baylor Scott and White Health , Temple , USA
| | - Lizhi Pang
- c Department of Pharmaceutical Sciences , North Dakota State University , Fargo , USA
| | - Juechen Yang
- d Department of Computer Science , North Dakota State University , Fargo , USA
| | - Han John Li
- e Department of Pharmacy , Medical Center Hospital , Odessa , USA
| | - Xiongwei Huo
- f Department of General Surgery , the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, China
| | - Steven Y Qian
- c Department of Pharmaceutical Sciences , North Dakota State University , Fargo , USA
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Casti P, Mencattini A, Sammarco I, Velappa SJ, Magna G, Cricenti A, Luce M, Pietroiusti A, Lesci GI, Ferrucci L, Magrini A, Martinelli E, Di Natale C. Robust classification of biological samples in atomic force microscopy images via multiple filtering cooperation. Knowl Based Syst 2017. [DOI: 10.1016/j.knosys.2017.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Wu Q, Lin WD, Liao GQ, Zhang LG, Wen SQ, Lin JY. Antiproliferative effects of cinobufacini on human hepatocellular carcinoma HepG2 cells detected by atomic force microscopy. World J Gastroenterol 2015; 21:854-861. [PMID: 25624718 PMCID: PMC4299337 DOI: 10.3748/wjg.v21.i3.854] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/30/2014] [Accepted: 09/19/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the antiproliferative activity of cinobufacini on human hepatocellular carcinoma HepG2 cells and the possible mechanism of its action.
METHODS: HepG2 cells were treated with different concentrations of cinobufacini. Cell viability was measured by methylthiazolyl tetrazolium (MTT) assay. Cell cycle distribution was analyzed by flow cytometry (FCM). Cytoskeletal and nuclear alterations were observed by fluorescein isothiocyanate-phalloidin and DAPI staining under a laser scanning confocal microscope. Changes in morphology and ultrastructure of cells were detected by atomic force microscopy (AFM) at the nanoscale level.
RESULTS: MTT assay indicated that cinobufacini significantly inhibited the viability of HepG2 cells in a dose-dependent manner. With the concentration of cinobufacini increasing from 0 to 0.10 mg/mL, the cell viability decreased from 74.9% ± 2.7% to 49.41% ± 2.2% and 39.24% ± 2.1% (P < 0.05). FCM analysis demonstrated cell cycle arrest at S phase induced by cinobufacini. The immunofluorescence studies of cytoskeletal and nuclear morphology showed that after cinobufacini treatment, the regular reorganization of actin filaments in HepG2 cells become chaotic, while the nuclei were not damaged seriously. Additionally, high-resolution AFM imaging revealed that cell morphology and ultrastructure changed a lot after treatment with cinobufacini. It appeared as significant shrinkage and deep pores in the cell membrane, with larger particles and a rougher cell surface.
CONCLUSION: Cinobufacini inhibits the viability of HepG2 cells via cytoskeletal destruction and cell membrane toxicity.
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Gold nanoparticles inhibit VEGF165-induced migration and tube formation of endothelial cells via the Akt pathway. BIOMED RESEARCH INTERNATIONAL 2014; 2014:418624. [PMID: 24987682 PMCID: PMC4058682 DOI: 10.1155/2014/418624] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 04/27/2014] [Accepted: 04/28/2014] [Indexed: 02/07/2023]
Abstract
The early stages of angiogenesis can be divided into three steps: endothelial cell proliferation, migration, and tube formation. Vascular endothelial growth factor (VEGF) is considered the most important proangiogenic factor; in particular, VEGF165 plays a critical role in angiogenesis. Here, we evaluated whether gold nanoparticles (AuNPs) could inhibit the VEGF165-induced human umbilical vein endothelial cell (HUVEC) migration and tube formation. AuNPs and VEGF165 were coincubated overnight at 4°C, after which the effects on cell migration and tube formation were assessed. Cell migration was assessed using a modified wound-healing assay and a transwell chamber assay; tube formation was assessed using a capillary-like tube formation assay and a chick chorioallantoic membrane (CAM) assay. We additionally detected the cell surface morphology and ultrastructure using atomic force microscopy (AFM). Furthermore, Akt phosphorylation downstream of VEGFR-2/PI3K in HUVECs was determined in a Western blot analysis. Our study demonstrated that AuNPs significantly inhibited VEGF165-induced HUVEC migration and tube formation by affecting the cell surface ultrastructure, cytoskeleton and might have inhibited angiogenesis via the Akt pathway.
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