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Zhou X, Liu H, Pang Y, Wang M, Liu S. UTMD-mediated delivery of miR-21-5p inhibitor suppresses the development of lung cancer. Tissue Cell 2022; 74:101719. [PMID: 34979378 DOI: 10.1016/j.tice.2021.101719] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 12/15/2021] [Accepted: 12/21/2021] [Indexed: 01/05/2023]
Abstract
BACKGROUND Ultrasound-targeted microbubble destruction (UTMD) is a new type of gene delivery technology. MiR-21-5p was highly expressed in a variety of cancers. In this paper, miR-21-5p inhibitor was transfected into lung cancer cells by UTMD to observe its role in lung cancer. METHODS StarBase was used to analyze the miR-21-5p expression in lung cancer patients and its relationship with the prognosis of the patients. MiR-21-5p expression in lung cancer tissues or cell lines was determined by quantitative reverse transcription polymerase chain reaction (qRT-PCR). Effects of gradient concentration (0, 5, 10, 20, 30%) of SonoVue or gradient mechanical index (MI) (0, 0.5, 1, 1.5, 2 W/cm2) on the cell viability were detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). The targeting relationship between miR-21-5p and B-cell translocation gene 2 (BTG2) was predicted by TargetScan and confirmed by dual-luciferase reporter assay, while the expressions of the two genes were determined by qRT-PCR. Through liposome transfection or UTMD transfection, the effects of miR-21-5p/BTG2 on the biological behaviors of lung cancer cells, the size of xenograft tumors and the expressions of ki67 and miR-21-5p were measured by qRT-PCR, western blot, cell function experiments and immunohistochemistry, respectively. RESULTS MiR-21-5p expression was upregulated in lung cancer, which was associated with a poor prognosis. The optimal ultrasound conditions were 10% SonoVue concentration and 1 W/cm2. UTMD transfection exerted a stronger effect than liposome transfection. MiR-21-5p promoted cell viability, proliferation and migration yet suppressed apoptosis by targeting BTG2. MiR-21-5p inhibitor reduced the size and volume of xenograft tumor and the expressions of ki67 and miR-21-5p in xenograft tumor tissues. CONCLUSION UTMD-mediated miR-21-5p inhibitor can more effectively suppress the development of lung cancer.
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Affiliation(s)
- Xiaoyu Zhou
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Jinan University, 613 W. Huangpu Avenue, Guangzhou City, Guangdong Province, 510630, China; Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Longzihu District, Bengbu City, Anhui Province, 233000, China
| | - Haitao Liu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Longzihu District, Bengbu City, Anhui Province, 233000, China
| | - Yingying Pang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Longzihu District, Bengbu City, Anhui Province, 233000, China
| | - Muqun Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Longzihu District, Bengbu City, Anhui Province, 233000, China
| | - Shengming Liu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Jinan University, 613 W. Huangpu Avenue, Guangzhou City, Guangdong Province, 510630, China.
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Wang J, Mo J, Xie Y, Wang C. Ultrasound microbubbles-mediated miR-216b affects MALAT1-miRNA axis in non-small cell lung cancer cells. Tissue Cell 2021; 74:101703. [PMID: 34896788 DOI: 10.1016/j.tice.2021.101703] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/19/2021] [Accepted: 11/23/2021] [Indexed: 12/25/2022]
Abstract
MiR-216b is ectopically expressed in various cancers. Ultrasound microbubbles (UTMBs) are an effective method for miRNA delivery. This article mainly explored the involvement of lncRNA in the effects of UTMBs-mediated miR-216b on non-small cell lung cancer (NSCLC) progression. Expressions and relationship of miR-216b and MALAT1 were examined using quantitative real-time polymerase chain reaction (qRT-PCR), Pearson, TargetScan, and dual-luciferase reporter assay. After the transfection with liposome- or UTMBs-mediated miR-216b mimic (M) or MALAT1 overexpression plasmid alone or together, levels of miR-216b and MALAT1, cell biological behaviors, as well as expressions of apoptosis- and epithelial mesenchymal transition (EMT)-related markers were examined using qRT-PCR, cell functional experiments, and western blot. Besides, we used qRT-PCR to quantify the expressions of multiple downstream miRNAs of MALAT1. MiR-216b expression was weakened yet MALAT1 expression was enhanced in NSCLC tissues, and miR-216b was negatively bound to MALAT1. TargetScan analysis manifested that miR-216b, targeted by MALAT1, was down-regulated in NSCLC cells. UTMBs-mediated miR-216b M further intensified miR-216b level yet weakened cell biological behaviors. The inhibitory effect of UTMBs-mediated miR-216b M on cell biological behaviors and MALAT1 expression was greatly better relative to that of miR-216b M. Moreover, miR-216b restrained the cell biological behaviors by repressing MALAT1 expression. We further manifested that miR-216b facilitated the expressions of apoptosis-related markers, but restrained those of EMT-related markers by repressing MALAT1 expression. Moreover, UTMBs-mediated miR-216b M enhanced the expressions of downstream multiple miRNAs of MALAT1, but this tendency was reversed by co-transfection of overexpressed MALAT1 and miR-216b M. Collectively, UTMBs-mediated miR-216b M restrained NSCLC cell growth by modulating the MALAT1-miRNA axis.
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Affiliation(s)
- Jian Wang
- Thoracic Surgery Department, Shenzhen People's Hospital, China
| | - Jianming Mo
- Pulmonary and Critical Care Medicine Department, Peking University Shenzhen Hospital, China
| | - Yuancai Xie
- Department of Thoracic Surgery, Peking University Shenzhen Hospital, China.
| | - Chunguang Wang
- Thoracic Surgery Department, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, China.
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Liang X, Wu B, Shang H, Han X, Jing H, Sun Y, Cheng W. VTIQ evaluates antitumor effects of NET-1 siRNA by UTMD in HCC xenograft models. Oncol Lett 2018; 16:2893-2902. [PMID: 30127877 PMCID: PMC6096142 DOI: 10.3892/ol.2018.8994] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 04/27/2018] [Indexed: 12/15/2022] Open
Abstract
The present study used a virtual touch tissue imaging and quantification (VTIQ) method to investigate the change in elasticity in xenograft tumor tissue models following silencing of the neuroepithelial-transforming protein 1 (NET-1) gene by ultrasound-targeted microbubble destruction (UTMD). A total of 24 xenograft models were established by subcutaneous injection of human hepatocellular carcinoma SMMC-7721 cells in BALB/c female nude mice. Then, NET-1 small interfering RNA (siRNA)-conjugated nanobubbles and a glypican-3 antibody were synthesized. The mean and maximum shear wave speed (SWSmean and SWSmax) in the tumor tissue were measured prior to, during, and following therapy using VTIQ. The growth of the tumor size and survival time were recorded. The levels of NET-1 protein were evaluated by immunohistochemical staining. In addition, tumor, liver and kidney tissues of the nude mice were collected to confirm whether gene transfection treatment was toxic in vivo. In the UTMD delivery gene group, SWSmean was correlated with the maximum diameter of the tumor (r=0.9806, P=0.0194). The immunohistochemical staining data indicated that the level of NET-1 protein in the treated groups was significantly decreased compared with those in the control groups. Additionally, no structural damage was observed in the nude mice liver and kidney tissues following treatment. Therefore, VTIQ measurement identified potential changes in the elastic properties of the tumors, which in turn may be associated with the stages of tumor development. The delivery method, UTMD, improves the antitumor effects of NET-1 siRNA and supports gene transfection as a promising therapeutic strategy.
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Affiliation(s)
- Xitian Liang
- Department of Ultrasonography, Harbin Medical University Cancer Hospital, Nangang, Harbin, Heilongjiang 150000, P.R. China
| | - Bolin Wu
- Department of Ultrasonography, Harbin Medical University Cancer Hospital, Nangang, Harbin, Heilongjiang 150000, P.R. China
| | - Haitao Shang
- Department of Ultrasonography, Harbin Medical University Cancer Hospital, Nangang, Harbin, Heilongjiang 150000, P.R. China
| | - Xue Han
- Department of Ultrasonography, Harbin Medical University Cancer Hospital, Nangang, Harbin, Heilongjiang 150000, P.R. China
| | - Hui Jing
- Department of Ultrasonography, Harbin Medical University Cancer Hospital, Nangang, Harbin, Heilongjiang 150000, P.R. China
| | - Yixin Sun
- Department of Ultrasonography, Harbin Medical University Cancer Hospital, Nangang, Harbin, Heilongjiang 150000, P.R. China
| | - Wen Cheng
- Department of Ultrasonography, Harbin Medical University Cancer Hospital, Nangang, Harbin, Heilongjiang 150000, P.R. China
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Wu B, Liang X, Jing H, Han X, Sun Y, Guo C, Liu Y, Cheng W. Effect of NET-1 siRNA conjugated sub-micron bubble complex combined with low-frequency ultrasound exposure in gene transfection. Oncotarget 2018; 9:4150-4160. [PMID: 29423111 PMCID: PMC5790528 DOI: 10.18632/oncotarget.23646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 12/14/2017] [Indexed: 11/25/2022] Open
Abstract
The present study evaluated the effect of NET-1 siRNA-conjugated sub-micron bubble (SMB) complexes combined with low-frequency ultrasound exposure in gene transfection. The NET-1 gene was highly expressed level in SMMC-7721 human hepatocellular carcinoma cell line. The cells were divided into seven groups and treated with different conditions. The groups with or without low-frequency ultrasound exposure, groups of adherent cells, and suspension cells were separated. The NET-1 siRNA-conjugated SMB complexes were made in the laboratory and tested by Zetasizer Nano ZS90 analyzer. Flow cytometry was used to estimate the transfection efficiency and cellular apoptosis. Western blot and quantitative real-time polymerase chain reaction (qPCR) were used for the estimation of the protein and mRNA expressions, respectively. Transwell analysis determined the migration and invasion capacities of the tumor cells. The results did not show any difference in the transfection efficiency between adherent and suspension cells. However, the NET-1 siRNA-SMB complexes combined with low-frequency ultrasound exposure could enhance the gene transfection effectively. In summary, the NET-1 siRNA-SMB complexes appeared to be promising gene vehicle.
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Affiliation(s)
- Bolin Wu
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang, Harbin, 150081, Heilongjiang Province, China
| | - Xitian Liang
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang, Harbin, 150081, Heilongjiang Province, China
| | - Hui Jing
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang, Harbin, 150081, Heilongjiang Province, China
| | - Xue Han
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang, Harbin, 150081, Heilongjiang Province, China
| | - Yixin Sun
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang, Harbin, 150081, Heilongjiang Province, China
| | - Cunli Guo
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang, Harbin, 150081, Heilongjiang Province, China
| | - Ying Liu
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang, Harbin, 150081, Heilongjiang Province, China
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang, Harbin, 150081, Heilongjiang Province, China
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Advances in ultrasound-targeted microbubble-mediated gene therapy for liver fibrosis. Acta Pharm Sin B 2017; 7:447-452. [PMID: 28752029 PMCID: PMC5518641 DOI: 10.1016/j.apsb.2017.02.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 12/03/2016] [Accepted: 12/23/2016] [Indexed: 12/18/2022] Open
Abstract
Hepatic fibrosis develops as a wound-healing scar in response to acute and chronic liver inflammation and can lead to cirrhosis in patients with chronic hepatitis B and C. The condition arises due to increased synthesis and reduced degradation of extracellular matrix (ECM) and is a common pathological sequela of chronic liver disease. Excessive deposition of ECM in the liver causes liver dysfunction, ascites, and eventually upper gastrointestinal bleeding as well as a series of complications. However, fibrosis can be reversed before developing into cirrhosis and has thus been the subject of extensive researches particularly at the gene level. Currently, therapeutic genes are imported into the damaged liver to delay or prevent the development of liver fibrosis by regulating the expression of exogenous genes. One technique of gene delivery uses ultrasound targeting of microbubbles combined with therapeutic genes where the time and intensity of the ultrasound can control the release process. Ultrasound irradiation of microbubbles in the vicinity of cells changes the permeability of the cell membrane by its cavitation effect and enhances gene transfection. In this paper, recent progress in the field is reviewed with emphasis on the following aspects: the types of ultrasound microbubbles, the construction of an ultrasound-mediated gene delivery system, the mechanism of ultrasound microbubble–mediated gene transfer and the application of ultrasound microbubbles in the treatment of liver fibrosis.
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Short interfering RNA targeting Net1 reduces the angiogenesis and tumor growth of in vivo cervical squamous cell carcinoma through VEGF down-regulation. Hum Pathol 2017; 65:113-122. [DOI: 10.1016/j.humpath.2017.04.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/18/2017] [Accepted: 04/29/2017] [Indexed: 12/22/2022]
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Ran LW, Wang H, Lan D, Jia HX, Yu SS. Effects of RNA interference combined with ultrasonic irradiation and SonoVue microbubbles on expression of STAT3 gene in keratinocytes of psoriatic lesions. ACTA ACUST UNITED AC 2017; 37:279-285. [PMID: 28397054 DOI: 10.1007/s11596-017-1728-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 03/01/2017] [Indexed: 01/25/2023]
Abstract
The most effective sequence of small interfering RNA (siRNA) silencing STAT3 of psoriatic keratinocytes (KCs) was screened out, and the effects of the most effective siRNA combined with ultrasonic irradiation and SonoVue microbubbles on the expression of STAT3 of KCs and the dose- and time-response were investigated. Three chemically-synthetic siRNAs targeting STAT3 carried by Lipofectamine 3000 were transfected into KCs, and the effects on STAT3 expression were detected, then the most effective siRNA was selected for the subsequent experiments. The negative controls of siRNA (siRNA-NC) labeled with Cy3 carried by Lipofectamine 3000 combined with ultrasonic irradiation and SonoVue microbubbles were transfected into KCs, then the optimal parameters of ultrasonic irradiation were determined. The most effective siRNA carried by Li-pofectamine 3000 combined with ultrasonic irradiation at the optimal parameters and SonoVue microbubbles was transfected into KCs, and the dose- and time-response of RNA interference was determined. The effect of RNA interference by the most effective siRNA at the optimal time and dose carried by Lipofectamine 3000 combined with ultrasonic irradiation and SonoVue microbubbles (LUS group) was compared with that only carried by Li-pofectamine 3000 (L group). The results showed that siRNA-3 achieved the highest silencing efficacy. 0.5 W/cm2 and 30 s were selected as the parameters of ultrasonic irradiation. The siRNA-3 carried by Lipofectamine 3000 combined with ultrasonic irradiation and SonoVue microbubbles could effectively knock down the STAT3 expression at mRNA and protein levels in dose- and time-dependent manners determined at 100 nmol/L with maximum downregulation on mRNA at 48 h, and on protein at 72 h after transfection. The LUS group achieved the highest silencing efficacy. It was concluded that siRNA-3 carried by Lipofectamine 3000 combined with ultrasonic irradiation and SonoVue microbubbles could effectively knock down the STAT3 expression in psoriatic KCs, and the optimized transfection condition and the sequence of siRNA-3 could serve for further research on gene therapy of psoriasis.
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Affiliation(s)
- Li-Wei Ran
- Department of Dermatology and Venereology, Jingxi Campus, Beijing ChaoYang Hospital, Capital Medical University, Beijing, 100043, China.
| | - Hao Wang
- Department of Dermatology and Venereology, the Second Affiliated Hospital (Xibei Hospital), Xi'an Jiaotong University, Xi'an, 710004, China
| | - Dong Lan
- Department of Dermatology and Venereology, Jingxi Campus, Beijing ChaoYang Hospital, Capital Medical University, Beijing, 100043, China
| | - Hong-Xia Jia
- Department of Dermatology and Venereology, Jingxi Campus, Beijing ChaoYang Hospital, Capital Medical University, Beijing, 100043, China
| | - Si-Si Yu
- Department of Dermatology and Venereology, Jingxi Campus, Beijing ChaoYang Hospital, Capital Medical University, Beijing, 100043, China
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Novel cell-penetrating peptide-loaded nanobubbles synergized with ultrasound irradiation enhance EGFR siRNA delivery for triple negative Breast cancer therapy. Colloids Surf B Biointerfaces 2016; 146:387-95. [PMID: 27388967 DOI: 10.1016/j.colsurfb.2016.06.037] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 06/20/2016] [Accepted: 06/21/2016] [Indexed: 11/23/2022]
Abstract
The lack of safe and effective gene delivery strategies remains a bottleneck for cancer gene therapy. Here, we describe the synthesis, characterization, and application of cell-penetrating peptide (CPP)-loaded nanobubbles (NBs), which are characterized by their safety, strong penetrating power and high gene loading capability for gene delivery. An epidermal growth factor receptor (EGFR)-targeted small interfering RNA (siEGFR) was transfected into triple negative breast cancer (TNBC) cells via prepared CPP-NBs synergized with ultrasound-targeted microbubble destruction (UTMD) technology. Fluorescence microscopy showed that siEGFR and CPP were loaded on the shells of the NBs. The transfection efficiency and cell proliferation levels were evaluated by FACS and MTT assays, respectively. In addition, in vivo experiments showed that the expression of EGFR mRNA and protein could be efficiently downregulated and that the growth of a xenograft tumor derived from TNBC cells could be inhibited. Our results indicate that CPP-NBs carrying siEGFR could potentially be used as a promising non-viral gene vector that can be synergized with UTMD technology for efficient TNBC therapy.
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Wu B, Qiao Q, Han X, Jing H, Zhang H, Liang H, Cheng W. Targeted nanobubbles in low-frequency ultrasound-mediated gene transfection and growth inhibition of hepatocellular carcinoma cells. Tumour Biol 2016; 37:12113-12121. [PMID: 27216880 DOI: 10.1007/s13277-016-5082-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 05/15/2016] [Indexed: 01/06/2023] Open
Abstract
The use of SonoVue combined with ultrasound exposure increases the transfection efficiency of short interfering RNA (siRNA). The objective of this study was to prepare targeted nanobubbles (TNB) conjugated with NET-1 siRNA and an antibody GPC3 to direct nanobubbles to hepatocellular carcinoma cells. SMMC-7721 human hepatocellular carcinoma cells were treated with six different groups. The transfection efficiency and cellular apoptosis were measured by flow cytometry. The protein and messenger RNA (mRNA) expression were measured by Western blot and quantitative real-time PCR, respectively. The migration and invasion potential of the cells were determined by Transwell analysis. The results show that US-guided siRNA-TNB transfection effectively enhanced gene silencing. In summary, siRNA-TNB may be an effective delivery vector to mediate highly effective RNA interference in tumor treatment.
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Affiliation(s)
- Bolin Wu
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin Medical University Cancer Hospital, Harbin, 150081, Heilongjiang Province, China
| | - Qiang Qiao
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin Medical University Cancer Hospital, Harbin, 150081, Heilongjiang Province, China
| | - Xue Han
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin Medical University Cancer Hospital, Harbin, 150081, Heilongjiang Province, China
| | - Hui Jing
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin Medical University Cancer Hospital, Harbin, 150081, Heilongjiang Province, China
| | - Hao Zhang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Hongjian Liang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin Medical University Cancer Hospital, Harbin, 150081, Heilongjiang Province, China.
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Xiao W, Ren M, Zhang C, Li S, An W. Amelioration of nonalcoholic fatty liver disease by hepatic stimulator substance via preservation of carnitine palmitoyl transferase-1 activity. Am J Physiol Cell Physiol 2015; 309:C215-27. [DOI: 10.1152/ajpcell.00133.2014] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 05/25/2015] [Indexed: 12/14/2022]
Abstract
Nonalcoholic steatohepatitis (NASH) is the progressive form of nonalcoholic fatty liver disease and so far is supposed to be related with mitochondrial impairment. Hepatic stimulator substance (HSS) has been defined as a liver-protective factor promoting hepatocyte DNA synthesis and hepatic proliferation after liver intoxication. We previously reported that HSS ameliorated hepatocyte death, probably because of its preservation of mitochondria. This study aims to explore whether HSS could protect carnitine palmitoyl transferase-1 (CPT-1), an essential enzyme responsible for β-oxidation of free fatty acids in mitochondria, from lipotoxicity, thus alleviating hepatic lipid deposition. To test this, the HSS gene was delivered into C57BL/6J mice and efficiently expressed in the liver. NASH mice were prepared with high-fat diet or methionine-choline-deficient diet. The results showed that hepatic inflammation and liver functions were alleviated in the HSS-transfected mice; meanwhile, the activity of CPT-1 was obviously protected. Moreover, oleic acid (OA) treatment resulted in remarkable lipid accumulation in HepG2 cells; this deposition was improved by HSS transfection. Simultaneously, the CPT-1 activity, which was impaired by OA treatment, was profoundly rescued in the HSS-expressing cells. CPT-1 activity was more severely impaired if the OA treatment was combined with S15176, a CPT-1 inhibitor. However, this impairment was effectively reduced by the HSS transfection, and the effect was enhanced by C75, a CPT-1 activator. Interestingly, if the cells were transfected with HSS-siRNA, the preservation of CPT-1 provided by HSS was again diminished. In conclusion, HSS reduces lipotoxicity to mitochondria most likely via preservation of CPT-1.
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Affiliation(s)
- Weichun Xiao
- Department of Cell Biology and Municipal Laboratory for Liver Protection and Regeneration Regulation, Capital Medical University, Beijing, China
| | - Meng Ren
- Department of Cell Biology and Municipal Laboratory for Liver Protection and Regeneration Regulation, Capital Medical University, Beijing, China
| | - Can Zhang
- Department of Cell Biology and Municipal Laboratory for Liver Protection and Regeneration Regulation, Capital Medical University, Beijing, China
| | - Shenglan Li
- Department of Cell Biology and Municipal Laboratory for Liver Protection and Regeneration Regulation, Capital Medical University, Beijing, China
| | - Wei An
- Department of Cell Biology and Municipal Laboratory for Liver Protection and Regeneration Regulation, Capital Medical University, Beijing, China
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Jing H, Cheng W, Zhang JW, Han X, Shao H, Sun YX. Galactosylated poly-L-lysine targeted microbubbles for ultrasound mediated antisense c-myc gene transfection in hepatocellular carcinoma cells. Arch Med Sci 2015; 11:292-300. [PMID: 25995743 PMCID: PMC4424248 DOI: 10.5114/aoms.2015.50963] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 09/06/2013] [Accepted: 09/24/2013] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION The aim of the study was to investigate the efficiency of delivery and targeted binding of c-myc antisense oligodeoxynucleotide (ASODN) and find a novel therapy for hepatic carcinoma. MATERIAL AND METHODS A targeted ultrasound microbubble compound was synthesized to deliver the c-myc ASODN by ultrasound-targeted microbubble destruction (UTMD) and applied in hepatocellular carcinoma cells (HCC) and cancer bearing mice. Lipid microbubbles were conjugated with biotinylated galactosylated poly-L-lysine (G-PLL) and SonoVue to target the hepatocellular carcinoma SMMC7721 cells with asialoglycoprotein receptors. There were four groups in both in vitro and in vivo studies: control group (group A); c-myc ASODN + G-PLL (CG group, group B); c-myc ASODN + SonoVue (CUS group, group C); c-myc ASODN + G-PLL + SonoVue (CGUS group, group D). The expression of c-myc mRNA was detected by reverse transcription-polymerase chain reaction (RT-PCR), and proliferation investigations of the SMMC7721 cells were also performed. In addition, the tumor volume was calculated and compared among different groups. RESULTS The level of c-myc mRNA in the three experimental groups was significantly lower than that in the control group in vitro (p < 0.05). Furthermore, c-myc gene expression was suppressed more strongly in the CGUS group compared with other groups in both in vitro and in vivo studies (p < 0.05). In addition, ultrasound mediation of targeted microbubbles yielded the highest inhibition of tumor growth and cell proliferation among the four groups. CONCLUSIONS The use of a G-PLL targeted microbubble contrast agent combined with ultrasound exposure could be a potential method for increasing gene delivery efficiency. This technique is a promising nonviral approach that can be used in liver cancer.
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Affiliation(s)
- Hui Jing
- Department of Ultrasound, Harbin Medical Univeristy Cancer Hospital, Harbin, China
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical Univeristy Cancer Hospital, Harbin, China
| | - Jiu-Wei Zhang
- Department of Ultrasound, Harbin Medical Univeristy Cancer Hospital, Harbin, China
| | - Xue Han
- Department of Ultrasound, Harbin Medical Univeristy Cancer Hospital, Harbin, China
| | - Hua Shao
- Department of Ultrasound, Harbin Medical Univeristy Cancer Hospital, Harbin, China
| | - Yi-Xin Sun
- Department of Ultrasound, Harbin Medical Univeristy Cancer Hospital, Harbin, China
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Restoration of MAGI-1 expression in human papillomavirus-positive tumor cells induces cell growth arrest and apoptosis. J Virol 2014; 88:7155-69. [PMID: 24696483 DOI: 10.1128/jvi.03247-13] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
UNLABELLED The cancer-causing high-risk human papillomavirus (HPV) E6 oncoproteins target a number of cellular proteins that contain PDZ domains. However, the role of many of these interactions in either the HPV life cycle or in HPV-induced malignancy remains to be defined. Previous studies had shown that MAGI-1 was one of the most strongly bound PDZ domain-containing substrates of E6, and one consequence of this interaction appeared to facilitate the perturbation of tight junctions (TJs) by E6. In this study, we describe the generation of a mutation, K499E, within the MAGI-1 PDZ1 domain, which is resistant to E6 targeting. This mutant allows restoration of MAGI-1 expression in HPV-positive cells and defines additional activities of MAGI-1 that are overcome as a consequence of the association with E6. The reexpression of MAGI-1 in HPV-positive cells results in an increased recruitment of ZO-1 and PAR3 to sites of cell-cell contact, repression of cell proliferation, and induction of apoptosis. While the K499E mutation does not significantly affect these intrinsic activities of MAGI-1 in HPV-negative cells, its resistance to E6 targeting in an HPV-positive setting results in more cells expressing the mutant MAGI-1 than the wild-type MAGI-1, with a corresponding increase in TJ assembly, induction of apoptosis, and reduction in cell proliferation. These studies provide compelling evidence of a direct role for the perturbation of MAGI-1 function by E6 in the HPV life cycle and in HPV-induced malignancy. IMPORTANCE It is clear that the targeting of PDZ-containing substrates by E6 is important for the normal viral life cycle and for the progression to malignancy. Nevertheless, which of these PDZ domain-containing proteins is relevant for HPV pathology is still elusive. In a previous study, we provided evidence that MAGI-1 is a sensitive proteolytic substrate for both the HPV-16 and HPV-18 E6 oncoproteins; however, the biological consequences associated with loss of MAGI-1 expression in HPV-positive cervical cancer cells are still poorly understood. Using a mutant MAGI-1, resistant to E6-mediated degradation, we show that its expression in cervical cancer cells promotes membrane recruitment of the tight junction-associated proteins ZO-1 and PAR3, represses cell proliferation, and promotes apoptosis. These findings suggest that E6-mediated inhibition of MAGI-1 function contributes to HPV pathology by perturbing tight junction assembly with concomitant stimulation of proliferation and inhibition of apoptosis.
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Cui K, Yan T, Luo Q, Zheng Y, Liu X, Huang X, Zou L. Ultrasound microbubble-mediated delivery of integrin-linked kinase gene improves endothelial progenitor cells dysfunction in pre-eclampsia. DNA Cell Biol 2014; 33:301-10. [PMID: 24564279 DOI: 10.1089/dna.2013.2229] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Pre-eclampsia (PE) is a specific vascular complication in pregnancy whose precise mechanism is still unclear. We hypothesized that endothelial progenitor cells (EPCs), the precursor of endothelial cells, might be impaired in patients with PE and hold a great promise for the treatment of PE. In the present study, we analyzed the EPCs number and expression of integrin-linked kinase (ILK) in PE patients. We confirmed that both EPCs number and ILK expression were diminished in PE patients. Next, we transfected EPCs with ILK gene using ultrasonic microbubble technique (UMT) for the first time, as UMT is a novel type of gene transfer technology showing promising applications in stem cells apart from EPCs. To further investigate the transfection efficiency of UMT, RT-PCR analysis and western blot were used to examine the messenger RNA (mRNA) and protein level of ILK. After transfection of the ILK gene, EPCs function was tested to illustrate the role of ILK in cell proliferation, apoptosis, migration, and secretion. The results of the in vitro study suggested that UMT, a novel gene delivery system, could be considered a potent physical method for EPCs transfection. Moreover, the growth and angiogenetic properties of EPCs are enhanced by introducing ILK. This study may afford a new trend for EPCs transfection and gene therapy in PE.
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Affiliation(s)
- Kai Cui
- 1 Department of Obstetrics and Gynecology, Union Hospital, Huazhong University of Science and Technology , Wuhan, China
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