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Luo D, Salai A, Lv H, Wang Y, Gao Y. FOXD2-AS1 acts an oncogene in esophageal squamous cell carcinoma through sponging miR-204-3p. CLINICAL & TRANSLATIONAL ONCOLOGY : OFFICIAL PUBLICATION OF THE FEDERATION OF SPANISH ONCOLOGY SOCIETIES AND OF THE NATIONAL CANCER INSTITUTE OF MEXICO 2022; 24:1954-1963. [PMID: 35778646 DOI: 10.1007/s12094-022-02850-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 04/28/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE A growing number of evidences has revealed that long non-coding RNAs (lncRNAs) have vital effect in the pathogenesis of esophageal squamous cell carcinoma (ESCC). In our work, we found that lncRNA FOXD2 adjacent opposite strand RNA 1 (FOXD2-AS1) was significantly increased in clinical ESCC samples and cell lines. METHODS The biological effect of FOXD2-AS1 on EC109 and KYSE150 cells showed that the low expression of FOXD2-AS1 inhibited the proliferation through CCK8 and colony formation assays, invasion by transwell chamber test, migration abilities by wound healing assay, and enhance apoptosis rates by flow cytometry assay. RESULTS Through bioinformatics analysis and luciferase reporter assays, microRNA (miR)-204-3p was proved to be a target of FOXD2-AS1. We further confirmed that FOXD2-AS1 was the upstream inhibitor of miR-204-3p and the down-regulation of miR-204-3p reversed the repressive effects of low expression of FOXD2-AS1 on ESCC progression. In addition, inhibition of FOXD2-AS1 effectively suppressed the tumor growth. CONCLUSIONS In general, our results suggested that FOXD2-AS1 may be of vital therapeutic importance for the treatment of ESCC patients.
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Affiliation(s)
- Dongbo Luo
- Department of Thoracic Surgery, Affiliated Tumor Hospital of Xinjiang Medical University, Suzhou Street 789, Ürümqi, 830011, China.
| | - Adili Salai
- Department of Thoracic Surgery, Affiliated Tumor Hospital of Xinjiang Medical University, Suzhou Street 789, Ürümqi, 830011, China
| | - Hongbo Lv
- Department of Thoracic Surgery, Affiliated Tumor Hospital of Xinjiang Medical University, Suzhou Street 789, Ürümqi, 830011, China
| | - Yang Wang
- Department of Thoracic Surgery, Affiliated Tumor Hospital of Xinjiang Medical University, Suzhou Street 789, Ürümqi, 830011, China
| | - Yunfei Gao
- Department of Thoracic Surgery, Affiliated Tumor Hospital of Xinjiang Medical University, Suzhou Street 789, Ürümqi, 830011, China
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Xu T, Yan Z, Lu J, Chen L, Li X, Li Y, Dong Z, Guo W. Long non-coding RNA NRSN2-AS1, transcribed by SOX2, promotes progression of esophageal squamous cell carcinoma by regulating the ubiquitin-degradation of PGK1. Clin Exp Metastasis 2022; 39:757-769. [PMID: 35715622 DOI: 10.1007/s10585-022-10174-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 06/01/2022] [Indexed: 11/03/2022]
Abstract
Aberrant expression of long non-coding RNAs (lncRNAs) plays pivotal roles in tumorigenesis of human malignant cancers, including esophageal squamous cell carcinoma (ESCC). However, the specific role of lncRNA NRSN2-AS1 in ESCC has not been investigated. Our analysis of clinical data revealed that NRSN2-AS1 was upregulated in ESCC tissues and negatively correlated with patient survival. Luciferase reporter assays and chromatin immunoprecipitation assays demonstrated that NRSN2-AS1 is transcribed by SOX2. In vitro functional experiments showed that NRSN2-AS1 can promote ESCC cell proliferation, migration, and invasion. Furthermore, NRSN2-AS1-binding proteins were detected using RNA pull-down assays and mass spectrometry. Mechanistically, NRSN2-AS1 can bind to phosphoglycerate kinase 1 (PGK1) and upregulate its protein levels by inhibiting its ubiquitination. Knockdown of PGK1 in part abolished the NRSN2-AS1 overexpression-induced effects on ESCC cell proliferation, migration, invasion, and epithelial‑mesenchymal transition (EMT). Thus, NRSN2-AS1 may be a diagnostic biomarker or treatment target for ESCC.
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Affiliation(s)
- Tongxin Xu
- Department of CT&MRI, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Zhaoyang Yan
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Juntao Lu
- Laboratory of Pathology, Hebei Cancer Institute, The Fourth Hospital of Hebei Medical University, Jiankang Rd. 12, Shijiazhuang, 050011, Hebei, China
| | - Liying Chen
- Laboratory of Pathology, Hebei Cancer Institute, The Fourth Hospital of Hebei Medical University, Jiankang Rd. 12, Shijiazhuang, 050011, Hebei, China
| | - Xiaoxu Li
- Laboratory of Pathology, Hebei Cancer Institute, The Fourth Hospital of Hebei Medical University, Jiankang Rd. 12, Shijiazhuang, 050011, Hebei, China
| | - Yan Li
- Laboratory of Pathology, Hebei Cancer Institute, The Fourth Hospital of Hebei Medical University, Jiankang Rd. 12, Shijiazhuang, 050011, Hebei, China
| | - Zhiming Dong
- Laboratory of Pathology, Hebei Cancer Institute, The Fourth Hospital of Hebei Medical University, Jiankang Rd. 12, Shijiazhuang, 050011, Hebei, China
| | - Wei Guo
- Laboratory of Pathology, Hebei Cancer Institute, The Fourth Hospital of Hebei Medical University, Jiankang Rd. 12, Shijiazhuang, 050011, Hebei, China.
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Li Y, Deng Y, Zhang X, Fu H, Han X, Guo W, Zhao W, Zhao X, Yu C, Li H, Lei K, Wang T. Dandelion Seed Extract Affects Tumor Progression and Enhances the Sensitivity of Cisplatin in Esophageal Squamous Cell Carcinoma. Front Pharmacol 2022; 13:897465. [PMID: 35668940 PMCID: PMC9164105 DOI: 10.3389/fphar.2022.897465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/03/2022] [Indexed: 11/13/2022] Open
Abstract
Like dandelion, dandelion seed also have anti-inflammatory activity. Therefore, in this article, we intend to explore the anti-cancer availability of aqueous dandelion seed extract (DSE) in esophageal squamous cell carcinoma (ESCC). Firstly, the effects of DSE on cell proliferation, apoptosis, migration, invasion and angiogenesis were investigated. Then to explore the mechanism of DSE against ESCC, the levels of proliferation-associated proteins (PI3K, Akt and pAkt), apoptosis-associated proteins (survivin, Bcl-2, Bax, caspase3 and caspase9), metastasis-associated proteins (MMP2, MMP9, VEGF) and EMT progression-associated proteins (Snail, E-cadherin and Vimentin) were analyzed. Next, we further explored the effect of DSE on the sensitivity of cisplatin (DDP) in ESCC cells and investigated the effect of DSE combined with DDP on DNA damage repair-associated proteins (MSH2, MLH1 and ERCC1) and drug resistant target protein STAT3. The results indicated that DSE selectively inhibited cell growth, proliferation, migration, invasion, angiogenesis and induced cell apoptosis in ESCC cells. It was observed the decreased PI3K, Akt and pAkt proteins levels in KYSE450 and Eca109 cells administrated with DSE. The data also showed that the application of DSE decreased the level of survivin and the ratio of Bcl-2/Bax, while increased the levels of caspase3 and caspase9. We also observed that DSE significantly decreased the levels of MMP2, MMP9 and VEGF proteins and inhibited the EMT progression in KYSE450 and Eca109 cells. In addition, survivin plays a critical role in DSE against ESCC followed with the application of survivin inhibitor YM155 impairing the inhibitory abilities of DSE in ESCC cells. Meanwhile, it was observed that DSE enhances the sensitivity of DDP to human ESCC cells via promoting DNA damage and inhibiting phosphorylation of STAT3. Therefore, DSE may affect ESCC progression and enhance the sensitivity of cisplatin, and consequently become an effective anti-cancer option for human ESCC treatment.
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Affiliation(s)
- Yuxi Li
- School of Pharmacy, Henan University, Kaifeng, China
| | - Yuying Deng
- School of Pharmacy, Henan University, Kaifeng, China
| | - Xiuli Zhang
- Department of Botany, Liaoning Agricultural College, Yingkou, China
| | - Han Fu
- School of Pharmacy, Henan University, Kaifeng, China
| | - Xue Han
- School of Pharmacy, Henan University, Kaifeng, China
| | - Wenqing Guo
- School of Pharmacy, Henan University, Kaifeng, China
| | - Wei Zhao
- School of Pharmacy, Henan University, Kaifeng, China
| | - Xuening Zhao
- School of Pharmacy, Henan University, Kaifeng, China
| | - Chunxue Yu
- School of Pharmacy, Henan University, Kaifeng, China
| | - Hui Li
- School of Basic Medical Sciences, Joint National Laboratory of Antibody Drug Engineering, Henan University, Kaifeng, China
- *Correspondence: Hui Li, ; Kaijian Lei, ; Tianxiao Wang,
| | - Kaijian Lei
- School of Pharmacy, Henan University, Kaifeng, China
- *Correspondence: Hui Li, ; Kaijian Lei, ; Tianxiao Wang,
| | - Tianxiao Wang
- School of Pharmacy, Henan University, Kaifeng, China
- *Correspondence: Hui Li, ; Kaijian Lei, ; Tianxiao Wang,
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Identification of Epithelial-Mesenchymal Transition- (EMT-) Related LncRNA for Prognostic Prediction and Risk Stratification in Esophageal Squamous Cell Carcinoma. DISEASE MARKERS 2021; 2021:5340240. [PMID: 34712369 PMCID: PMC8548124 DOI: 10.1155/2021/5340240] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 09/25/2021] [Accepted: 09/29/2021] [Indexed: 02/08/2023]
Abstract
Background Epithelial-mesenchymal transition (EMT) is significantly associated with the invasion and development of esophageal squamous cell carcinoma (ESCC). However, the importance of EMT-related long noncoding RNA (lncRNA) is little known in ESCC. Methods GSE53624 (N = 119) and GSE53622 (N = 60) datasets retrieved from the Gene Expression Omnibus (GEO) database were used as training and external validation cohorts, respectively. GSE53624 and GSE53622 datasets were all sampled from China. Then, the prognostic value of EMT-related lncRNA was comprehensively investigated by weighted coexpression network analysis (WGCNA) and COX regression model. Results High expression of PLA2G4E-AS1, AC063976.1, and LINC01592 significantly correlated with the favorable overall survival (OS) of ESCC patients, and LINC01592 had the greatest contribution to OS. Importantly, ESCC patients were divided into low- and high-risk groups based on the optimal cut-off value of risk score estimated by the multivariate COX regression model of these three lncRNA. Patients with high risk had a shorter OS rate and restricted mean survival time (RMST) than those with low risk. Moreover, univariate and multivariate COX regression revealed that risk stratification, age, and TNM were independent prognostic predictors, which were used to construct a nomogram model for individualized and visualized prognosis prediction of ESCC patients. The calibration curves and time-dependent ROC curves in the training and validation cohorts suggested that the nomogram model had a good performance. Interestingly, clear trends indicated that risk score positively correlated with tumor microenvironment (TME) scores and immune checkpoints TIGIT, CTLA4, and BTLA. In addition, the Kyoto Encyclopedia of Genes and Genomes (KEGG) showed that PLA2G4E-AS1, AC063976.1, and LINC01592 were primarily associated with TNF signaling pathway, NF-kappa B signaling pathway, and ECM-receptor interaction. Conclusion We developed EMT-related lncRNA PLA2G4E-AS1, AC063976.1, and LINC01592 for prognostic prediction and risk stratification of Chinese ESCC patients, which might provide deep insight for personalized prognosis prediction in Chinese ESCC patients and be potential biomarkers for designing novel therapy.
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Long Noncoding RNA NR2F1-AS1 Enhances the Migration and Invasion of Hepatocellular Carcinoma via Modulating miR-642a/DEK Pathway. JOURNAL OF ONCOLOGY 2021; 2021:6868514. [PMID: 34594378 PMCID: PMC8478570 DOI: 10.1155/2021/6868514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/03/2021] [Accepted: 09/04/2021] [Indexed: 11/18/2022]
Abstract
Purpose Hepatocellular carcinoma (HCC), a malignant tumor that exists worldwide, has a high morbidity and mortality rate. Previous studies have reported that lncRNA NR2F1-AS1 plays a critical role in several cancers. Here, we aimed to investigate the biological function of NR2F1-AS1 and its molecular mechanism in the migration and invasion of HCC. Methods Quantitative real-time PCR (qRT-PCR) was performed to analyze NR2F1-AS1 expression in HCC. The biological function was investigated by transwell invasion and migration assays. The protein level was identified by Western blot. In addition, the downstream targets of NR2F1-AS1 and miR-642a were confirmed by luciferase reporter assays. Results NR2F1-AS1 was significantly upregulated in HCC and associated with the poor prognosis of HCC patients. Biological function experiments revealed that the silence of NR2F1-AS1 suppressed cell invasion and migration in HCC. More importantly, NR2F1-AS1 directly interacted with miR-642a and negatively regulated miR-642a. DEK was the target of miR-642a, and NR2F1-AS1 positively regulated DEK expression by suppressing miR-642a. Conclusion Taken together, it is the first time we discovered the interaction of NR2F1-AS1 with miR-642a in modulating HCC cell invasion and migration.
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The Effect and Mechanism of lncRNA NR2F1-As1/miR-493-5p/MAP3K2 Axis in the Progression of Gastric Cancer. JOURNAL OF ONCOLOGY 2021; 2021:3881932. [PMID: 34335755 PMCID: PMC8294992 DOI: 10.1155/2021/3881932] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 07/02/2021] [Indexed: 02/07/2023]
Abstract
Background LncRNA NR2F1-AS1 has been identified as an oncogene in some human tumors, such as breast cancer, nonsmall cell lung cancer, and esophageal squamous cell carcinoma. Nonetheless, whether NR2F1-AS1 is involved in the progression of gastric cancer (GC) remains unknown. Methods The expression patterns of NR2F1-AS1, MAP3K2, and miR-493-5p in GC tissues and cells were detected by RT-qPCR. The protein expression of MAP3K2 was assessed by the Western blotting assay. The MTT assay and flow cytometry were performed to measure cell proliferation and cell apoptosis in GC cells. The transwell assay was adopted to assess cell migration in GC cells. The relationship between NR2F1-AS1, MAP3K2, and miR-493-5p was verified by a dual-luciferase reporter assay. Results The increased NR2F1-AS1 and MAP3K2 expressions were discovered in GC tissues and cells compared with control groups. Knockdown of NR2F1-AS1 and MAP3K2 dramatically suppressed cell proliferation and migration, while it enhanced cell apoptosis in GC cells. In addition, NR2F1-AS1 was found to be a sponge of miR-493-5p, and MAP3K2 was a downstream gene of miR-493-5p. Moreover, the expression of MAP3K2 was notably reduced by miR-493-5p, and NR2F1-AS1 counteracted the inhibition of miR-493-5p. Conclusion Thus, NR2F1-AS1 was verified to regulate GC cell progression by sponging miR-493-5p to upregulate MAP3K2 expression.
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Hussen BM, Shoorei H, Mohaqiq M, Dinger ME, Hidayat HJ, Taheri M, Ghafouri-Fard S. The Impact of Non-coding RNAs in the Epithelial to Mesenchymal Transition. Front Mol Biosci 2021; 8:665199. [PMID: 33842553 PMCID: PMC8033041 DOI: 10.3389/fmolb.2021.665199] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 03/01/2021] [Indexed: 12/13/2022] Open
Abstract
Epithelial to mesenchymal transition (EMT) is a course of action that enables a polarized epithelial cell to undertake numerous biochemical alterations that allow it to adopt features of mesenchymal cells such as high migratory ability, invasive properties, resistance to apoptosis, and importantly higher-order formation of extracellular matrix elements. EMT has important roles in implantation and gastrulation of the embryo, inflammatory reactions and fibrosis, and transformation of cancer cells, their invasiveness and metastatic ability. Regarding the importance of EMT in the invasive progression of cancer, this process has been well studies in in this context. Non-coding RNAs (ncRNAs) have been shown to exert critical function in the regulation of cellular processes that are involved in the EMT. These processes include regulation of some transcription factors namely SNAI1 and SNAI2, ZEB1 and ZEB2, Twist, and E12/E47, modulation of chromatin configuration, alternative splicing, and protein stability and subcellular location of proteins. In the present paper, we describe the influence of ncRNAs including microRNAs and long non-coding RNAs in the EMT process and their application as biomarkers for this process and cancer progression and their potential as therapeutic targets.
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Affiliation(s)
- Bashdar Mahmud Hussen
- Pharmacognosy Department, College of Pharmacy, Hawler Medical University, Erbil, Iraq
| | - Hamed Shoorei
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Mahdi Mohaqiq
- Wake Forest Institute for Regenerative Medicine, School of Medicine, Wake Forest University, Winston-Salem, NC, United States
| | - Marcel E. Dinger
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Hazha Jamal Hidayat
- Department of Biology, College of Education, Salahaddin University-Erbil, Erbil, Iraq
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Ji WC, Bao GJ, Yang FW, Sun L, Han R. Role of lncRNA NR2F1-AS1 and lncRNA H19 Genes in Hepatocellular Carcinoma and Their Effects on Biological Function of Huh-7. Cancer Manag Res 2021; 13:941-951. [PMID: 33568940 PMCID: PMC7868256 DOI: 10.2147/cmar.s284650] [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: 10/20/2020] [Accepted: 12/26/2020] [Indexed: 12/28/2022] Open
Abstract
Objective This research was designed to probe into the expression and related mechanism of lncRNA NR2F1-AS1 and H19 in hepatocellular carcinoma (HCC). Methods Forty-two HCC patients who came to our hospital from February 2018 to August 2019 were included into a research group (RG). Meanwhile, 46 healthy controls were regarded as a control group (CG). BEL-7402, Huh-7 human hepatoma cells and HL-7702 human normal liver cells were purchased, and the NR2F1-AS1 and H19 levels in serum and tissues of HCC patients were detected. PcDNA3.1-NR2F1-AS1, si-NR2F1-AS1, NC, pcDNA3.1-H19 and si-H19 were transfected into BEL-7402 and Huh-7 cells. The NR2F1-AS1 and H19 levels in samples were detected via qRT-PCR, and the expression of apoptosis-related proteins in cells was tested through WB. Cell proliferation, invasion, or apoptosis was detected by CCK8, Transwell or flow cytometry, respectively. Results The NR2F1-AS1 and H19 levels were high in human hepatoma cells, and AUCs of lncRNA NR2F1-AS1 and lncRNA H19 were both >0.8. The lncRNA NR2F1-AS1 and lncRNA H19 were associated with HCC staging. After transfection of pcDNA3.1-NR2F1-AS1, si-NR2F1-AS1, NC, pcDNA3.1-H19, si-H19 BEL-7402 and Huh-7 cells, silencing NR2F1-AS1 and H19 expression can promote apoptosis and inhibit cell growth, while silencing their over-expression can inhibit the EMT process of Huh-7 cells. Conclusion lncRNA NR2F1-AS1 and lncRNA H19 genes are abnormally expressed in HCC. Furthermore, the two can suppress the EMT process of Huh-7 cells and promote apoptosis effectively.
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Affiliation(s)
- Wen-Chao Ji
- Department of Hepatobiliary Surgery, Zaozhuang Municipal Hospital, Zaozhuang, 277100 Shandong Province, People's Republic of China
| | - Guang-Jian Bao
- Department of Hepatobiliary Surgery, Zaozhuang Municipal Hospital, Zaozhuang, 277100 Shandong Province, People's Republic of China
| | - Fang-Wu Yang
- General Surgery Department, Zaozhuang Mining Group Central Hospital, Zaozhuang, 277100 Shandong Province, People's Republic of China
| | - Lei Sun
- Department of Hepatobiliary Surgery, Zaozhuang Municipal Hospital, Zaozhuang, 277100 Shandong Province, People's Republic of China
| | - Rui Han
- Department of Hepatobiliary Surgery, Zaozhuang Municipal Hospital, Zaozhuang, 277100 Shandong Province, People's Republic of China
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Qi Y, Yang W, Liu S, Han F, Wang H, Zhao Y, Zhou Y, Zhou D. Cisplatin loaded multiwalled carbon nanotubes reverse drug resistance in NSCLC by inhibiting EMT. Cancer Cell Int 2021; 21:74. [PMID: 33494783 PMCID: PMC7836500 DOI: 10.1186/s12935-021-01771-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 01/11/2021] [Indexed: 12/25/2022] Open
Abstract
Background Lung cancer is one of the important health threats worldwide, of which 5-year survival rate is less than 15%. Non-small-cell lung cancer (NSCLC) accounts for about 80% of all lung cancer with high metastasis and mortality. Methods Cisplatin loaded multiwalled carbon nanotubes (Pt-MWNTS) were synthesized and used to evaluate the anticancer effect in our study. The NSCLC cell lines A549 (cisplatin sensitive) and A549/DDP (cisplatin resistant) were used in our in vitro assays. MTT was used to determine Cancer cells viability and invasion were measured by MTT assay and Transwell assay, respectively. Apoptosis and epithelial-mesenchymal transition related marker proteins were measured by western blot. The in vivo anti-cancer effect of Pt-MWNTs were performed in male BALB/c nude mice (4-week old). Results Pt-MWNTS were synthesized and characterized by X-ray diffraction, Raman, FT-IR spectroscopy and scan electron microscopy. No significant cytotoxicity of MWNTS was detected in both A549/DDP and A549 cell lines. However, Pt-MWNTS showed a stronger inhibition effect on cell growth than free cisplatin, especially on A549/DDP. We found Pt-MWNTS showed higher intracellular accumulation of cisplatin in A549/DDP cells than free cisplatin and resulted in enhanced the percent of apoptotic cells. Western blot showed that application of Pt-MWNTS can significantly upregulate the expression level of Bax, Bim, Bid, Caspase-3 and Caspase-9 while downregulate the expression level of Bcl-2, compared with free cisplatin. Moreover, the expression level of mesenchymal markers like Vimentin and N-cadherin was more efficiently reduced by Pt-MWNTS treatment in A549/DDP cells than free cisplatin. In vivo study in nude mice proved that Pt-MWNTS more effectively inhibited tumorigenesis compared with cisplatin, although both of them had no significant effect on body weight. Conclusion Pt-MWNT reverses the drug resistance in the A549/DDP cell line, underlying its possibility of treating NSCLC with cisplatin resistance.
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Affiliation(s)
- Yuxin Qi
- Department of Respiratory Medicine, Jinan People's Hospital Affiliated to Shandong First Medical University, Jinan, 271199, China
| | - Wenping Yang
- Department of Respiratory Medicine, Jinan People's Hospital Affiliated to Shandong First Medical University, Jinan, 271199, China
| | - Shuang Liu
- Department of Respiratory Medicine, Jinan People's Hospital Affiliated to Shandong First Medical University, Jinan, 271199, China
| | - Fanjie Han
- Department of Respiratory Medicine, Jinan People's Hospital Affiliated to Shandong First Medical University, Jinan, 271199, China
| | - Haibin Wang
- Department of Respiratory Medicine, Jinan People's Hospital Affiliated to Shandong First Medical University, Jinan, 271199, China
| | - Yonghong Zhao
- Department of Respiratory Medicine, Jinan People's Hospital Affiliated to Shandong First Medical University, Jinan, 271199, China
| | - Yufa Zhou
- Department of Respiratory Medicine, Jinan People's Hospital Affiliated to Shandong First Medical University, Jinan, 271199, China
| | - Daijun Zhou
- Department of Oncology, General Hospital of Western Theater Command of PLA, Chengdu, 610083, China.
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Zhao M, Cui H, Zhao B, Li M, Man H. Long intergenic non‑coding RNA LINC01232 contributes to esophageal squamous cell carcinoma progression by sequestering microRNA‑654‑3p and consequently promoting hepatoma‑derived growth factor expression. Int J Mol Med 2020; 46:2007-2018. [PMID: 33125097 PMCID: PMC7595671 DOI: 10.3892/ijmm.2020.4750] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 08/20/2020] [Indexed: 02/06/2023] Open
Abstract
Long intergenic non-coding RNA 01232 (LINC01232) was identified as a critical regulator of the development of pancreatic adenocarcinoma. The present study investigated the expression and regulatory roles of LINC01232 in esophageal squamous cell carcinoma (ESCC). The main aim of the present study was to elucidate the underlying mechanisms through which LINC01232 affects the malignancy of ESCC. Initially, LINC01232 expression in ESCC was analyzed using the TCGA and GTEx databases and was confirmed using reverse transcription-quantitative polymerase chain reaction. ESCC cell proliferation, apoptosis and migration and invasion were assessed using the Cell Counting kit-8 assay, flow cytometric analysis, and migration and invasion assays, respectively. ESCC tumor growth in vivo was examined using a xenograft mouse model. As shown by the results, a high LINC01232 expression was detected in ESCC tissues and cell lines. LINC01232 downregulation suppressed the proliferation, migration and invasion of ESCC cells, and promoted cell apoptosis in vitro. In addition, LINC01232 depletion restricted tumor growth in vivo. Mechanistically, LINC01232 was shown to function as an microRNA-654-3p (miR-654-3p) sponge in ESCC cells, and hepatoma-derived growth factor (HDGF) was identified as a direct target of miR-654-3p. LINC01232 could bind competitively to miR-654-3p and decrease its expression in ESCC cells, thereby promoting HDGF expression. Rescue experiments reconfirmed that the effects of LINC01232 deficiency in ESCC cells were restored by increasing the output of the miR-654-3p/HDGF axis. On the whole, the present study demonstrates that LINC01232 plays a tumor-promoting role during the progression of ESCC by regulating the miR-654-3p/HDGF axis. The LINC01232/miR-654-3p/HDGF pathway may thus provide a novel theoretical basis for the management of ESCC.
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Affiliation(s)
- Meihua Zhao
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia 028007, P.R. China
| | - Haishan Cui
- Department of Endoscopy, Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia 028007, P.R. China
| | - Baisui Zhao
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia 028007, P.R. China
| | - Mei Li
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia 028007, P.R. China
| | - Haiqing Man
- Department of Endoscopy, Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia 028007, P.R. China
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