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Respiration and Heat Shock Protein After Short-Term Heating/Stretch-Fixing on Smooth Muscle Cells. Cardiovasc Eng Technol 2020; 11:308-315. [PMID: 32016917 DOI: 10.1007/s13239-020-00458-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 01/24/2020] [Indexed: 10/25/2022]
Abstract
PURPOSE A treatment device without a stent is needed for peripheral stenotic artery treatment. We have proposed short-term heating balloon angioplasty, photo-thermo dynamic balloon angioplasty (PTDBA). Though smooth muscle cells (SMCs) after PTDBA are fixed in a stretched formation in a porcine model, influences of this stimulus on SMCs have not been investigated. SMC migration after vascular dilatation would be related to chronic restenosis. The aim of this study was to examine respiratory activity and recovery ability of SMCs after short-term heating/stretch-fixing in vitro for chronic phase treatment effect discussion. METHODS SMCs on a stretch chamber were heated for 15 s with stretching and fixed in a stretched formation. SMC migration is correlated with the cell respiratory activity. The amount of ATP production was measured using a WST-8 assay for respiratory activity evaluation. The intracellular expression of heat shock protein 70 was measured by an ELISA for recovery ability evaluation. RESULTS In the case of 60 °C heating, SMC respiratory activity after short-term heating/stretch-fixing decreased drastically in all stretching rates. In the case of 50 °C heating, SMC respiratory activity decreased and then increased. Alternatively, the recovery ability at 60 °C was greater than that at 50 °C. CONCLUSIONS SMCs heated at 60 °C with stretching would have high recovery ability and low respiratory activity related to SMC migration. These results may be important evidence in determining the treatment condition in PTDBA.
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Shi J, Lv S, Wu M, Wang X, Deng Y, Li Y, Li K, Zhao H, Zhu X, Ye M. HOTAIR-EZH2 inhibitor AC1Q3QWB upregulates CWF19L1 and enhances cell cycle inhibition of CDK4/6 inhibitor palbociclib in glioma. Clin Transl Med 2020; 10:182-198. [PMID: 32508030 PMCID: PMC7240863 DOI: 10.1002/ctm2.21] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 03/23/2020] [Accepted: 03/23/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Glioblastoma (GBM) is the most common primary tumor in the brain, and the median survival time for GBM patients is only about 14 months; therefore, there is an urgent need for new and more effective strategies. Since cell cycle disorder is a key factor in tumor progression and immortalization, there is great potential for controlling cell cycle disorders in tumor cells in GBM patients. We began to study a novel combination of AQB and palbociclib to evaluate its potential as a new therapeutic target. METHODS Protein mass spectrometry was used to identify the tumor suppressor genes up-regulated by AQB.The effects of HOTAIR - EZH2 inhibitor AQB and CDK4/6 inhibitor Palbociclib on glioma cells lines were examined in vitro and in vivo experiments. RESULTS The combination of AQB and palbociclib inhibitors has a more pronounced suppression effect on the cell cycle, especially gliomas with high expression of HOTAIR and EZH2 and low expression of CWF19L1. We performed protein mass spectrometry to identify AQB upregulated tumor suppressor genes and confirmed that CWF19L1 is regulated by H3K27ac through chromatin immunoprecipitation-quantitative PCR results. Univariate and multivariate Cox regression analysis and database analysis were performed to suggest CWF19L1 is a good prognostic factor. Our experimental results suggested that CWF19L1 can be significantly upregulated by AQB and lead to degradation of CDK4/6, resulting in G1 arrest. The combination of AQB and CDK4/6 inhibitor palbociclib is more effective in inhibiting the growth of glioma than in the single drug, both in vivo and in vitro. Similarly, we found that both AQB and palbociclib can inhibit Wnt/β-catenin signaling, and the combined use of the two inhibitors has a stronger inhibitory effect on tumor metastasis. CONCLUSIONS The combination of AQB and CDK4/6 inhibitor palbociclib has been found to have significant antitumor effects, which is likely to become a new strategy for glioma treatment.
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Affiliation(s)
- Jin Shi
- Department of NeurosurgeryThe Second Affiliated Hospital of Nanchang UniversityJiangxiP.R. China
| | - Shigang Lv
- Department of NeurosurgeryThe Second Affiliated Hospital of Nanchang UniversityJiangxiP.R. China
| | - Miaojing Wu
- Department of NeurosurgeryThe Second Affiliated Hospital of Nanchang UniversityJiangxiP.R. China
| | - Xianggan Wang
- Department of NeurosurgeryThe Second Affiliated Hospital of Nanchang UniversityJiangxiP.R. China
| | - Yan Deng
- Department of NeurologyThe Second Affiliated Hospital of Nanchang UniversityJiangxiP.R. China
| | - Yansheng Li
- Department of NeurosurgeryLaboratory of Neuro‐OncologyKey Laboratory of Post‐trauma Neuro‐repair and Regeneration in Central Nervous System Ministry of EducationTianjin Key Laboratory of InjuriesTianjin Medical University General HospitalTianjin Neurological InstituteVariations and Regeneration of Nervous SystemTianjinP.R. China
| | - Kuanxun Li
- Department of MedicineMedical College of Nanchang UniversityJiangxiP.R. China
| | - Hongyu Zhao
- Department of NeurosurgeryTongji HospitalHuazhong University of Science and TechnologyWuhanP.R. China
| | - Xingen Zhu
- Department of NeurosurgeryThe Second Affiliated Hospital of Nanchang UniversityJiangxiP.R. China
| | - Minhua Ye
- Department of NeurosurgeryThe Second Affiliated Hospital of Nanchang UniversityJiangxiP.R. China
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Effect of Hydroxyapatite Formation on Titanium Surface with Bone Morphogenetic Protein-2 Loading through Electrochemical Deposition on MG-63 Cells. MATERIALS 2018; 11:ma11101897. [PMID: 30287747 PMCID: PMC6213405 DOI: 10.3390/ma11101897] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 09/28/2018] [Accepted: 10/01/2018] [Indexed: 02/06/2023]
Abstract
Calcium phosphate ceramics used in dentistry and orthopedics are some of the most valuable biomaterials, owing to their excellent osteoconduction, osteoinduction, and osseointegration. Osteoconduction and osteoinduction are critical targets for bone regeneration, and osseointegration is essential for any dental implantations. In this study, a hydroxyapatite (HAp) hybrid coating layer with the sequential release of bone morphogenetic protein 2 (BMP-2) was deposited onto an etched titanium substrate by electrochemical deposition. The resulting release of BMP-2 from Ti⁻HAp was assessed by immersing samples in a simulated buffer fluid solution. Through coculture, human osteosarcoma cell proliferation and alkaline phosphatase activity were assessed. The characteristics and effect on cell proliferation of the hybrid coatings were investigated for their functionality through X-ray diffraction (XRD) and cell proliferation assays. Findings revealed that -0.8 V vs. Ag/AgCl (3 M KCl) exhibited the optimal HAp properties and a successfully coated HAp layer. XRD confirmed the crystallinity of the deposited HAp on the titanium surface. Ti-0.8 V Ti⁻HAp co-coating BMP sample exhibited the highest cell proliferation efficiency and was more favorable for cell growth. A successful biocompatible hybrid coating with optimized redox voltage enhanced the osseointegration process. The findings suggest that this technique could have promising clinical applications to enhance the healing times and success rates of dental implantation.
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Umehara K, Sun Y, Hiura S, Hamada K, Itoh M, Kitamura K, Oshima M, Iwama A, Saito K, Anzai N, Chiba K, Akita H, Furihata T. A New Conditionally Immortalized Human Fetal Brain Pericyte Cell Line: Establishment and Functional Characterization as a Promising Tool for Human Brain Pericyte Studies. Mol Neurobiol 2017; 55:5993-6006. [PMID: 29128907 DOI: 10.1007/s12035-017-0815-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 10/27/2017] [Indexed: 12/30/2022]
Abstract
While pericytes wrap around microvascular endothelial cells throughout the human body, their highest coverage rate is found in the brain. Brain pericytes actively contribute to various brain functions, including the development and stabilization of the blood-brain barrier (BBB), tissue regeneration, and brain inflammation. Accordingly, detailed characterization of the functional nature of brain pericytes is important for understanding the mechanistic basis of brain physiology and pathophysiology. Herein, we report on the development of a new human brain pericyte cell line, hereafter referred to as the human brain pericyte/conditionally immortalized clone 37 (HBPC/ci37). Developed via the cell conditionally immortalization method, these cells exhibited excellent proliferative ability at 33 °C. However, when cultured at 37 °C, HBPC/ci37 cells showed a differentiated phenotype that was marked by morphological alterations and increases in several pericyte-enriched marker mRNA levels, such as platelet-derived growth factor receptor β. It was also found that HBPC/ci37 cells possessed the facilitative ability of in vitro BBB formation and differentiation into a neuronal lineage. Furthermore, HBPC/ci37 cells exhibited the typical "reactive" features of brain pericytes in response to pro-inflammatory cytokines. To summarize, our results clearly demonstrate that HBPC/ci37 cells possess the ability to perform several key brain pericyte functions while also showing the capacity for extensive and continuous proliferation. Based on these findings, it can be expected that, as a unique human brain pericyte model, HBPC/ci37 cells have the potential to contribute to significant advances in the understanding of human brain pericyte physiology and pathophysiology.
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Affiliation(s)
- Kenta Umehara
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Yuchen Sun
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Satoshi Hiura
- Department of Biochemistry, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Koki Hamada
- Department of Biochemistry, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Motoyuki Itoh
- Department of Biochemistry, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Keita Kitamura
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Motohiko Oshima
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Atsushi Iwama
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Kosuke Saito
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
- Division of Medical Safety Science, National Institute of Health Sciences, Tokyo, 158-8501, Japan
| | - Naohiko Anzai
- Department of Pharmacology, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Kan Chiba
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Hidetaka Akita
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan
| | - Tomomi Furihata
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, 260-8675, Japan.
- Department of Pharmacology, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan.
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Furihata T, Ito R, Kamiichi A, Saito K, Chiba K. Establishment and characterization of a new conditionally immortalized human astrocyte cell line. J Neurochem 2015; 136:92-105. [DOI: 10.1111/jnc.13358] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 08/04/2015] [Accepted: 09/10/2015] [Indexed: 01/11/2023]
Affiliation(s)
- Tomomi Furihata
- Laboratory of Pharmacology and Toxicology Graduate School of Pharmaceutical Sciences Chiba University Chiba Japan
| | - Ryo Ito
- Laboratory of Pharmacology and Toxicology Graduate School of Pharmaceutical Sciences Chiba University Chiba Japan
| | - Atsuko Kamiichi
- Laboratory of Pharmacology and Toxicology Graduate School of Pharmaceutical Sciences Chiba University Chiba Japan
| | - Kosuke Saito
- Laboratory of Pharmacology and Toxicology Graduate School of Pharmaceutical Sciences Chiba University Chiba Japan
| | - Kan Chiba
- Laboratory of Pharmacology and Toxicology Graduate School of Pharmaceutical Sciences Chiba University Chiba Japan
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Wang Y, Li Q, Fan ZZ, Sun J, Wang YQ, Liu RH, Gao H. Tanshinone ⅡA induces apoptosis of liver cancer cells via p38MAPK signal transduction. Shijie Huaren Xiaohua Zazhi 2009; 17:124-129. [DOI: 10.11569/wcjd.v17.i2.124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To study the effect of TSⅡA on inducing apoptosis via p38MAPK signal transduction in human liver cancer.
METHODS: The apoptosis rate was assessed in liver cancer cells by immunofluorescence after treatment with TSⅡA, and gel electrophoresis was used to observe the typical DNA ladder. Apoptosis and cell cycle were determined by flow cytometry (FCM), the mRNA expression level of Fas and Caspase-3 were detected using fluorescent quantitation PCR. The mRNA expression level of Fas and Caspase-3 was detected after treatment with blocking agent.
RESULTS: After SMMC-7721 cells were treated with 4, 8, 16 mg/L of TSⅡA for 48 h, typical morphologic changes of apoptosis were observed by fluorescence microscopy using Hoechst staining. There were regular DNA ladders under agarose gel electrophoresis. after treatment with 4, 8, 16 mg/L of TSⅡA for 48 h, the cell apoptotic rates were respectively 12.83%± 1.51%, 17.86% ± 2.70% and 29.24% ± 7.58%, showing significant difference (P < 0.01). After signal transduction pathway of p38MAPK was blocked, the cell apoptotic rates and cell ratio of G0/G1 phase were decreased significantly (P < 0.01). The mRNA expression of the Fas, Caspase-3 gene were increased obviously after treatment with 8 mg/L TSⅡA for 48 h; whereas they were decreased significantly when the transduction pathway was blocked.
CONCLUSION: TSⅡA could induce the apoptosis of human liver cancer cells and arrest in G0/G1 phase. The mechanism might be related to up-regulated expression of Fas, Caspase-3 mRNA by regulating p38MAPK signal transduction pathway.
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