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Papageorgiou AA, Roussos A, Papathanasiou I, Balis C, Karachalios T, Varitimidis SE, Malizos KN, Tsezou A. MiR-217 Regulates SIRT1 Expression and Promotes Inflammatory and Apoptotic Responses in Osteoarthritis. Genes (Basel) 2023; 14:2155. [PMID: 38136977 PMCID: PMC10742866 DOI: 10.3390/genes14122155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023] Open
Abstract
Previous studies have reported miR-217 uregulation in age-related pathologies. We investigated the impact of miR-217-5p on sirtuin 1 (SIRT1) regulation in human osteoarthritic (OA) chondrocytes. MiR-217 target enrichment analyses were performed using three public databases, Gene Ontology and Kyoto Encyclopedia of Genes and Genomes. MiR-217-5p expression levels were quantified in normal and OA chondrocytes. SIRT1 expression levels, nuclear factor kappa-B p65 subunit (NF-κBp65) and p53 acetylation levels, and expression levels of OA-related pro-inflammatory markers [tumor necrosis factor α (TNFα), interleukin 1β (IL-1β), IL-6], pro-apoptotic markers [Bax, pro-caspase 3, cleaved caspase 3] and matrix regulators [matrix metalloproteinase (MMP)-1, MMP-13, MMP-9, Collagen 2 (COL2A1), Aggrecan (ACAN)] were evaluated in miR-217 mimic-treated and/or miR-217 inhibitor-treated OA chondrocytes, with/without subsequent treatment with siRNA against SIRT1 (siSIRT1). MiR-217-5p was upregulated in OA chondrocytes, while target prediction/enrichment analyses revealed SIRT1 as miR-217 target-gene. Deacetylation of NF-κBp65 and p53 in miR-217 inhibitor-treated OA chondrocytes was reversed by siSIRT1 treatment. MiR-217 inhibitor-treated OA chondrocytes showed increased COL2A1, ACAN and decreased IL-1β, IL-6, TNFα, Bax, cleaved caspase 3 and MMPs expression levels, which were reversed following miR-217 inhibitor/siSIRT1 treatment. Our findings highlight the impact of miR-217-5p on SIRT1 downregulation contributing to OA pathogenesis.
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Affiliation(s)
- Aliki-Alexandra Papageorgiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
| | - Athanasios Roussos
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
| | - Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
- Department of Biology, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Charalampos Balis
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
| | - Theophilos Karachalios
- Department of Orthopedic Surgery, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (T.K.); (S.E.V.); (K.N.M.)
| | - Sokratis E. Varitimidis
- Department of Orthopedic Surgery, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (T.K.); (S.E.V.); (K.N.M.)
| | - Konstantinos N. Malizos
- Department of Orthopedic Surgery, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (T.K.); (S.E.V.); (K.N.M.)
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
- Department of Biology, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece
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Feng Y, Xia S, Hui J, Xu Y. Circular RNA circBNC2 facilitates glycolysis and stemness of hepatocellular carcinoma through the miR-217/high mobility group AT-hook 2 (HMGA2) axis. Heliyon 2023; 9:e17120. [PMID: 37360090 PMCID: PMC10285170 DOI: 10.1016/j.heliyon.2023.e17120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 06/01/2023] [Accepted: 06/07/2023] [Indexed: 06/28/2023] Open
Abstract
Hepatocellular cancer (HCC) accounts for approximately 90% of primary liver carcinoma and is a significant health threat worldwide. Circular RNA basonuclin 2 (circBNC2) is implicated with the progression of several cancers. However, its roles in carcinogenesis and glycolysis are still unclear in HCC. In this study, the levels of circBNC2 and high mobility group AT-hook 2 (HMGA2) were highly expressed, while these of miR-217 were poorly expressed in HCC tissues and cells. Upregulation of circBNC2 was related to poor prognosis and tumor node metastasis (TNM) stage. Knockdown of circBNC2 inhibited the HCC progression. Moreover, knockdown of circBNC2 suppressed the levels of Ras, ERK1/2, PCNA, HK2, and OCT4. Notably, circBNC2 functioned as a molecular sponge of microRNA 217 (miR-217) to upregulate the HMGA2 expression. The inhibitory effects of the circBNC2 silence on the growth and stemness of HCC cells, and levels of PCNA, HK2 and OCT4 were aggravated by the miR-217 overexpression, but neutralized by the HMGA2 overexpression. Besides, silencing of circBNC2 blocked the tumor growth through upregulating the expression of miR-217 and downregulating the levels of HMGA2, PCNA2, HK2 and OCT4 in vivo. Thus, the current data confirmed that circBNC2 sponged miR-217 to upregulate the HMGA2 level, thereby contributing to the HCC glycolysis and progression. These findings might present novel insight into the pathogenesis and treatment of HCC.
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Affiliation(s)
- Yan Feng
- Department of Integrated, Chongqing University Cancer Hospital & Chongqing Cancer Hospital, Chongqing, 400030, China
| | - Shufeng Xia
- Department of Integrated, Chongqing University Cancer Hospital & Chongqing Cancer Hospital, Chongqing, 400030, China
| | - Junlan Hui
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical and Pharmaceutical College, Chongqing, 400030, China
| | - Yan Xu
- Department of Integrated, Chongqing University Cancer Hospital & Chongqing Cancer Hospital, Chongqing, 400030, China
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Meng C, Jiang B, Liu W, Wang L, Zhao Z, Bai R, Zhao Y. MiR-217 regulates autophagy through OPG/RANKL/RANK in giant cell tumors. J Orthop Surg Res 2023; 18:346. [PMID: 37165403 PMCID: PMC10170763 DOI: 10.1186/s13018-023-03826-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 05/04/2023] [Indexed: 05/12/2023] Open
Abstract
BACKGROUND Increasing evidence suggests that microRNAs (miRNAs) play a crucial role in cancer development and progression. Our previous study showed remarkably lower levels of miR-217 in GCT cells and tissues, and miR-217 re-expression inhibited the occurrence and development of GCT in vitro; however, the associated mechanisms remain unknown. Thus, this study aimed to explore the mechanisms underlying the proliferation inhibitory effect of miR-217 in GCT cells. METHODS The proliferative potential of the GCT cells was measured with an MTT assay and BrdU straining. Changes in GCT cell migration and invasion was assessed by a transwell assay. Finally, Western blot and RT-PCR assays were employed to evaluate OPG/RANKL/RANK signaling pathway-related protein expression. RESULTS The excessive upregulation of miR-217 markedly suppressed GCT cell proliferation and tumorigenesis both in vitro and in vivo. miR-217 overexpression could inhibit the OPG/RANKL/RANK signaling pathway in vitro and in vivo. Furthermore, ALP activity was significantly decreased in GCT cells following miR-217 treatment. Importantly, miR-217 could inhibit autophagy-related protein expression and autophagosome/autolysosome formation in GCT cells and tissues. CONCLUSION These results suggest that miR-217 upregulation could inhibit the occurrence and development of GCT by blocking autophagy. These findings offer an effective therapeutic target to improve the survival rates of patients with CGT in the future.
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Affiliation(s)
- Chenyang Meng
- The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010030, China
| | - Boyong Jiang
- The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010030, China
| | - Wanlin Liu
- The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010030, China
| | | | - Zhenqun Zhao
- The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010030, China
| | - Rui Bai
- The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010030, China.
| | - Yan Zhao
- The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010030, China.
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Nasirpour MH, Salimi M, Majidi F, Minuchehr Z, Mozdarani H. Study of DACH1 Expression and its Epigenetic Regulators as Possible Breast Cancer-Related Biomarkers. Avicenna J Med Biotechnol 2023; 15:108-117. [PMID: 37034893 PMCID: PMC10073918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 02/22/2023] [Indexed: 04/11/2023] Open
Abstract
Background Breast carcinogenesis involves both genetic and epigenetic changes. DNA methylation, as well as micro-RNA regulations, are the significant epigenetic phenomena dysregulated in breast cancer. Herein, the expression of DACH1 as a tumor suppressor gene and its promoter methylation status was analyzed in breast cancer tumors. Also, the expression of three micro RNAs (miR-217, miR-6807-3p, and miR-552), which had been previously reported to target DACH1, was assessed. Methods The SYBR green-based Real-Time reverse transcription-PCR was used to determine DACH1 and micro-RNAs (miR-217, miR-6807-3p, and miR-552) expression in 120 ductal breast cancer tumors compared with standard control. Also, the promoter methylation pattern of DACH1 was investigated using the Methylation-specific PCR technique. Results DACH1 expression was significantly down-regulated in breast tumors (p<0.05). About 33.5% of tumors showed DACH1 promoter hyper-methylation. The studied micro-RNAs, expression was negatively correlated with DACH1 expression. The highest expressions of miRNAs and higher DACH1 promoter methylation were observed in advanced cancer situations. The Kaplan-Meier survival curves indicated that the overall survival was significantly poor in higher miRNAs and lower DACH1 expression in breast cancer patients (p<0.002). Conclusion DACH1 down-regulation may be associated with a poor breast cancer prognosis. The DACH1 down-regulation may be due to epigenetic regulations such as promoter methylation, especially in triple-negative cases. Other factors, such as micro-RNAs (miR-217, miR-6807-3p, and miR-552), may also have an impact. The elevated expression of miR-217, miR-6807-3p, and miR-552, maybe candidates as possible poor prognostic biomarkers in breast cancer management for further consideration.
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Affiliation(s)
- Mohammad Hossein Nasirpour
- Department of Medical Genetics, Institute of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Mahdieh Salimi
- Department of Medical Genetics, Institute of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Faezeh Majidi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Zarrin Minuchehr
- Institute of Industrial and Environmental Biotechnology (IIEB), National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Hossein Mozdarani
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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Chen C, Fang F. hsa_circ_0006916 Exerts Effect on Amyloid Beta-Induced Neuron Injury by Targeting miR-217/HOMER1. Ann Clin Lab Sci 2023; 53:181-191. [PMID: 37094855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
OBJECTIVE Circular RNAs (circRNAs) are rich in miRNA-binding sites, which serve as miRNA sponges or competitive endogenous RNAs (ceRNAs). In the central nervous system, circRNAs are relevant to many neurological disorders including Alzheimer's disease (AD). Dementia associated with AD is correlated with the conversion of the β-Amyloid (Aβ) peptides from soluble monomers to aggregated oligomers and insoluble fibrils. Downregulation of circHOMER1 (circ_0006916) expression level is observed in AD female cases. Thus, this study investigates whether circHOMER1 prevents fibrillar Aβ (fAβ)-induced cell damage. METHODS The levels of sAβ42 in cerebrospinal fluid (CSF) of amyloid-positive normal cognition (NC) individuals, mild cognitive impairment (MCI) individuals, and AD patients were measured. For in vitro studies, the SH-SY5Y cells were treated with 10 μM of fAβ42 or soluble Aβ42 (sAβ42). RNase R treatment and actinomycin D treatment were used to identify the characteristics of circHOMER1. Gene expression was measured by RT-qPCR. Protein levels were measured using western blotting. Cell viability and apoptosis were estimated by MTT assays and flow cytometry. The binding relationship of miR-217 and circHOMER1 (HOMER1) was verified by luciferase reporter assays. RESULTS CircHOMER1 was more stable in SH-SY5Y cells than linear HOMER1. CircHOMER1 upregulation ameliorates the fAβ42-induced cell apoptosis and circHOMER1 downregulation reversed the anti-apoptotic roles of sAβ42. Mechanistically, miR-217 interacted with circHOMER1 (HOMER1). Moreover, miR-217 upregulation or HOMER1 downregulation exacerbates the fAβ42-induced cell damage. CONCLUSIONS CircHOMER1 (hsa_circ_0006916) ameliorates the fAβ42-induced cell injury via the miR-217/HOMER1 axis.
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Affiliation(s)
- Cheng Chen
- Department of Geriatrics, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Edong Healthcare Group, Huangshi, Hubei, China
| | - Fan Fang
- Department of Geriatrics, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Edong Healthcare Group, Huangshi, Hubei, China
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Hosseinpour-Soleimani F, Khamisipour G, Derakhshan Z, Ahmadi B. Expression analysis of circulating miR-22, miR-122, miR-217 and miR-367 as promising biomarkers of acute lymphoblastic leukemia. Mol Biol Rep 2023; 50:255-65. [PMID: 36327023 DOI: 10.1007/s11033-022-08016-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 10/07/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND The role of serum-based biomarkers such as microRNAs in cancer diagnosis has been extensively established. This study aimed to determine the expression levels of bioinformatically selected miRNAs and whether they can be used as biomarkers or a new therapeutic target in patients with acute lymphoblastic leukemia (ALL). MATERIALS AND METHODS The expression levels of serum miR-22, miR-122, miR-217, and miR-367 in 21 ALL patients and 21 healthy controls were measured using quantitative real-time PCR. The receiver operating characteristic (ROC) curve and the associated area under the curve (AUC) was used to assess candidate miRNAs' diagnostic value as a biomarker. RESULTS The results showed that miR-217 was markedly decreased in patients with ALL compared to controls. Moreover, miR-22, miR-122, and miR-367 were found to be upregulated. Furthermore, ROC analysis showed that serum miR-217 and miR-367 could differentiate ALL patients from healthy individuals, while miR-22 has approximate discriminatory power that requires further investigation. CONCLUSION These results provide promising preliminary evidence that circulating miR-217 and miR-367 could be considered potent diagnostic biomarkers and therapeutic goals in this disease.
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Huang ZM, Wang H, Ji ZG. Bladder cancer tissue-derived exosomes suppress ferroptosis of T24 bladder cancer cells by transporting miR-217. Environ Mol Mutagen 2023; 64:39-49. [PMID: 36461670 DOI: 10.1002/em.22520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 11/25/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
It has been reported that miR-217 can inhibit the oncogenic activity and progression of bladder cancer (BCa) cells, but it has not been explored whether miR-217 is involved in the regulation of ferroptosis. In the present study, RNA transfection, real-time PCR, flow cytometry, Western blotting assays, immunofluorescence and ELISA were performed to explore the effects and mechanisms of miR-217 in BCa tissue-derived exosomes. We found that extracellular fluid from bladder cancer tissue promoted the growth and miR-217 expression of T24 cells and inhibited ferroptosis. MiR-217 was confirmed to inhibit ferroptosis in bladder cancer cells by RNA interference and functional assays. By cell membrane fluorescence probe (CM-Dil) labeling, inhibiting exosome secretion by GW4689 and exosome extraction, we determined that BCa tissue-derived exosomes transport miR-217 into T24 cells. Culture of T24 cells with extracellular fluid after RNA interference showed that exosomes carrying miR-217 derived from BCa tissues inhibited ferroptosis of T24 cells. We conclude that bladder cancer tissue-derived exosomes inhibit ferroptosis of T24 bladder cancer cells by transporting miR-217. The results of our study provide a new insight into the progression of bladder cancer.
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Affiliation(s)
- Zhong-Ming Huang
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Hai Wang
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Zhi-Gang Ji
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
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Li J, Li D, Zhang W. [Retracted] Tumor suppressor role of miR-217 in human epithelial ovarian cancer by targeting IGF1R. Oncol Rep 2022; 48:200. [PMID: 36169172 PMCID: PMC9551651 DOI: 10.3892/or.2022.8415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 11/08/2015] [Indexed: 11/16/2022] Open
Affiliation(s)
- Jieyan Li
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, P.R. China
| | - Dongmei Li
- Special Education Department of Changchun University, Changchun, Jilin 130022, P.R. China
| | - Weiyuan Zhang
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, P.R. China
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Cao J, Huang S, Li X. Rapamycin inhibits the progression of human acute myeloid leukemia by regulating circ_0094100/ miR-217/ATP1B1 axis. Exp Hematol 2022; 112-113:60-69.e2. [PMID: 35901982 DOI: 10.1016/j.exphem.2022.07.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 07/11/2022] [Accepted: 07/19/2022] [Indexed: 11/04/2022]
Abstract
Rapamycin has been reported to inhibit the progression of diverse tumor cells. However, the functions of rapamycin in acute myeloid leukemia (AML) are little known. Cell Counting Kit-8 (CCK-8) assay was conducted to evaluate cell viability. Flow cytometry analysis was employed to analyze cell apoptosis and cell cycle process. Quantitative real-time polymerase chain reaction (qRT-PCR) assay was performed to determine the levels of circRNA_0094100 (circ_0094100) and microRNA-217 (miR-217). Western blot assay was carried out to measure the protein levels of proliferating cell nuclear antigen (PCNA), cyclin D1, B-cell lymphoma-2 (Bcl-2) and ATPase Na+/K+ transporting subunit beta 1 (ATP1B1). Dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were conducted to verify the relationship between miR-217 and circ_0094100 or ATP1B1. Rapamycin treatment suppressed AML cell viability and promoted apoptosis in a dose-dependent way. Circ_0094100 was elevated in AML tissues and cells. Moreover, the circ_0094100 level was reduced in AML cells treated with rapamycin. Circ_0094100 knockdown further inhibited rapamycin-mediated AML cell viability, and cell cycle, and promoted cell apoptosis. Circ_0094100 silencing reduced the protein levels of PCNA, cyclin D1, and Bcl-2 in rapamycin-treated AML cells. For mechanism analysis, circ_0094100 acted as the sponge for miR-217 and miR-217 inhibition reversed circ_0094100 knockdown-mediated malignant behaviors of rapamycin-treated AML cells. Furthermore, miR-217 overexpression suppressed cell viability and cell cycle and facilitated apoptosis in rapamycin-exposed AML cells, which were abolished by increasing ATP1B1. Rapamycin inhibited AML cell viability and cell cycle process and induced apoptosis through regulating circ_0094100/miR-217/ATP1B1 axis.
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Affiliation(s)
- Jiufang Cao
- Department of Hematolgy, The Second People's Hospital of Yibin City, Sichuan 644000, China
| | - Shihua Huang
- Department of Hematolgy, The Second People's Hospital of Yibin City, Sichuan 644000, China.
| | - Xiaoming Li
- Department of Hematolgy, Affiliated Hospital of Southwest Medical University, No.25 Taiping Street, Luzhou, 646000, Sichuan, China.
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Shen S, Jiang M, Deng W, Liu X, Xiong J, Zeng Z, Zhao H, Zeng X, Fu B. Circ_0008717 promotes renal cell carcinoma progression by upregulating FBXO17 via targeting miR-217. J Gene Med 2022; 24:e3418. [PMID: 35357059 DOI: 10.1002/jgm.3418] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 03/11/2022] [Accepted: 03/18/2022] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Renal cell carcinoma (RCC) is a common lethal urological malignancy. Circular RNAs (circRNAs) are summarized to play important roles in cancer development. The objective of this study was to investigate the role and action mechanism of circ_0008717 in RCC. METHODS The expression of circ_0008717, miR-217 and F-box protein 17 (FBXO17) mRNA was detected by real-time quantitative polymerase chain reaction (qRT-PCR). Cell proliferation was examined using cell counting kit-8 (CCK-8) assay and EdU assay. Cell apoptosis was assessed by flow cytometry assay. Cell migration and cell invasion were investigated using transwell assay. Glycolysis progression was assessed according to the levels of glucose uptake and lactate production. The expression of glycolysis-related proteins and FBXO17 protein was quantified by western blot. The targets were analyzed by the bioinformatics tools (starBase and circinteractome) and validated by dual-luciferase reporter assay, RNA pull-down assay and RNA immunoprecipitation (RIP) assay. Xenograft model was established to monitor the role of circ_0008717 in vivo. RESULTS Circ_0008717 was upregulated in RCC tissues and cells. Silencing circ_0008717 suppressed RCC cell proliferation, migration, invasion and glycolysis but promoted cell apoptosis. MiR-217 was a target of circ_0008717 and bound to FBXO17 3'UTR. The expression of FBXO17 was positively regulated by circ_0008717 but impaired by miR-217 reintroduction. The inhibitory effects of circ_0008717 knockdown on RCC cell malignant behaviors were reversed by miR-217 inhibition or FBXO17 overexpression. Circ_0008717 knockdown inhibited tumor growth in vivo by regulating miR-217 and FBXO17. CONCLUSION Circ_0008717 aggravated the progression of RCC by activating FBXO17 through targeting miR-217, which provided a novel mechanism for circ_0008717 to participate in RCC progression.
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Affiliation(s)
- Siyao Shen
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ming Jiang
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Wen Deng
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xiaoqiang Liu
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Junhui Xiong
- Department of Urology, Jiangxi Province Hospital of Integrated Chinese and Western Medicine, Nanchang, Jiangxi, China
| | - Zhigang Zeng
- Department of Urology, Jiangxi Province Hospital of Integrated Chinese and Western Medicine, Nanchang, Jiangxi, China
| | - Hong Zhao
- Department of Urology, Jiangxi Province Hospital of Integrated Chinese and Western Medicine, Nanchang, Jiangxi, China
| | - Xiaochun Zeng
- Department of Urology, Jiangxi Province Hospital of Integrated Chinese and Western Medicine, Nanchang, Jiangxi, China
| | - Bin Fu
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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Lv Y, Wang M, Chen M, Wang D, Luo M, Zeng Q. hsa_circ_0119412 overexpression promotes cervical cancer progression by targeting miR-217 to upregulate anterior gradient 2. J Clin Lab Anal 2022; 36:e24236. [PMID: 35274779 DOI: 10.1002/jcla.24236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/22/2021] [Accepted: 12/31/2021] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Mounting evidence summarizes that circRNA is closely implicated in the development of numerous cancers. Our study aimed to investigate the role of circ_0119412 whose function was not explored in cervical cancer. METHODS RT-qPCR analysis was utilized for the expression analysis of circ_0119412, miR-217, and anterior gradient 2 (AGR2). CCK-8 assay, transwell assay, and MTT assay were employed to assess cell proliferation, migration, and adhesion, respectively. Animal study was performed to check the role of circ_0119412 in vivo. Bioinformatics analysis was applied to predict the downstream targets of circ_0119412. RIP assay was utilized to examine miRNAs potentially bound by circ_0119412. The interplays between miR-217 and circ_0119412 or AGR2 were validated by dual-luciferase reporter assay. RESULTS circ_0119412 expression was highly enhanced in cervical tumor tissues and cancer cells. circ_0119412 overexpression aggravated cervical cancer cell proliferation, migration, and adhesion, and its overexpression was also conducive to tumor formation and growth in animal models. AGR2 was upregulated in cervical cancer by the public bioinformatics data. circ_0119412 bound to miR-217, and miR-217 bound to AGR 3'UTR. The promoting effects of circ_0119412 overexpression on cancer cell malignant phenotypes were reversed by miR-217 enrichment. In addition, increased expression of miR-217 suppressed AGR2 expression, thus weakening the functional effects of AGR2. CONCLUSION circ_0119412 functioned as an oncogenic driver to promote the malignant development of cervical cancer by targeting the miR-217/AGR2 pathway.
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Affiliation(s)
- Yumei Lv
- Department of Gynecology and Obstetrics, General Hospital of Western Theater Command of the Chinese People' s Liberation Army, Chengdu, China
| | - Mingyi Wang
- Department of Gynecology and Obstetrics, General Hospital of Western Theater Command of the Chinese People' s Liberation Army, Chengdu, China
| | - Mingli Chen
- Department of Gynecology and Obstetrics, General Hospital of Western Theater Command of the Chinese People' s Liberation Army, Chengdu, China
| | - Dan Wang
- Department of Gynecology and Obstetrics, General Hospital of Western Theater Command of the Chinese People' s Liberation Army, Chengdu, China
| | - Mingyan Luo
- Department of Gynecology and Obstetrics, General Hospital of Western Theater Command of the Chinese People' s Liberation Army, Chengdu, China
| | - Qingyuan Zeng
- Department of Gynecology and Obstetrics, General Hospital of Western Theater Command of the Chinese People' s Liberation Army, Chengdu, China
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Wang Z, Yang L, Wu P, Li X, Tang Y, Ou X, Zhang Y, Xiao X, Wang J, Tang H. The circROBO1/KLF5/FUS feedback loop regulates the liver metastasis of breast cancer by inhibiting the selective autophagy of afadin. Mol Cancer 2022; 21:29. [PMID: 35073911 PMCID: PMC8785480 DOI: 10.1186/s12943-022-01498-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/03/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Metastasis causes the majority of cancer-related deaths worldwide. Increasing studies have revealed that circRNAs are associated with the carcinogenesis and metastasis of many cancers. Nevertheless, the biological mechanisms of circRNAs in breast cancer (BC) liver metastasis remain extremely ambiguous. METHODS In this study, we identified circROBO1 from three pairs of primary BC and metastatic liver sites by RNA sequencing. FISH assays and RT-qPCR were conducted to validate the existence and expression of circROBO1. The oncogenic role of circROBO1 was demonstrated both in vitro and in vivo. Western blot, ChIP, RIP, RNA pull-down, and dual-luciferase reporter assays were used to confirm the interaction of the feedback loop among circROBO1, miR-217-5p, KLF5, and FUS. Meanwhile, the regulation of selective autophagy was investigated by immunofluorescence, CoIP, and western blot. RESULTS In this study, upregulated expression of circROBO1 was found in BC-derived liver metastases and was correlated with poor prognosis. Knockdown of circROBO1 strikingly inhibited the proliferation, migration, and invasion of BC cells, whereas overexpression of circROBO1 showed the opposite effects. Moreover, overexpression of circROBO1 promoted tumor growth and liver metastasis in vivo. Further research revealed that circROBO1 could upregulate KLF5 by sponging miR-217-5p, allowing KLF5 to activate the transcription of FUS, which would promote the back splicing of circROBO1. Therefore, a positive feedback loop comprising circROBO1/KLF5/FUS was formed. More importantly, we found that circROBO1 inhibited selective autophagy of afadin by upregulating KLF5. CONCLUSIONS Our results demonstrated that circROBO1 facilitates the carcinogenesis and liver metastasis of BC through the circROBO1/KLF5/FUS feedback loop, which inhibits the selective autophagy of afadin by suppressing the transcription of BECN1. Therefore, circROBO1 could be used not only as a potential prognostic marker but also as a therapeutic target in BC.
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Affiliation(s)
- Zehao Wang
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China
| | - Lu Yang
- Department of Radiotherapy, Cancer Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Peng Wu
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China
| | - Xing Li
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China
| | - Yuhui Tang
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China
| | - Xueqi Ou
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China
| | - Yue Zhang
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China
| | - Xiangsheng Xiao
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China.
| | - Jin Wang
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China.
| | - Hailin Tang
- Department of Breast Oncology, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China.
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Song C, Guo Y, Chen F, Liu W. LncRNA MALAT1 promotes osteogenic differentiation through the miR-217/AKT3 axis: a possible strategy to alleviate osteoporosis. J Gene Med 2022; 24:e3409. [PMID: 35030644 DOI: 10.1002/jgm.3409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 08/27/2021] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Accumulating evidence demonstrates that long non-coding RNAs (lncRNAs) are associated with the development of osteoporosis. This study aimed to investigate the effect of MALAT1 on osteogenic differentiation in osteoporosis. METHODS The MALAT1 levels were detected by Real-time Polymerase Chain Reaction (RT-qPCR). Moreover, the levels of osteogenic differentiation-related factors (Bmp4, Col1a1, and Spp1) were measured by RT-qPCR and western blot. Alkaline phosphatase (ALP) activity was detected using ALP staining assay. RESULTS The MALAT1 levels were downregulated in hindlimb unloading (HU) mice and simulated microgravity (MG) treated MC3T3-E1 cells. Moreover, MG treatment induced the downregulation of the expression of ALP, BMP4, Col1a1 and Spp1, while overexpression of MALAT1 abolished the downregulation. MG also inhibited ALP activity, while MALAT1 reversed the effect. Furthermore, miR-217 was identified as a target of MALAT1, and AKT3 was verified as a target of miR-217. Overexpression of miR-217 rescued the promotion of osteogenic differentiation induced by MALAT1 in MG treated cells. Knockdown of AKT3 abolished the facilitation of osteogenic differentiation induced by downregulation of miR-217. CONCLUSION MALAT1 promotes osteogenic differentiation through regulating miR-217/AKT3 axis, suggesting that MALAT1 is a potential target to alleviate osteoporosis.
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Affiliation(s)
- Chenyang Song
- Department of orthopedics, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Yu Guo
- Department of orthopedics, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Fenyong Chen
- Department of orthopedics, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Wenge Liu
- Department of orthopedics, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
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Chen Z, Ming J, Liu Y, Hu G, Liao Q. Epigenetic modification of miR-217 promotes intervertebral disc degeneration by targeting the FBXO21-ERK signalling pathway. Arthritis Res Ther 2022; 24:261. [PMID: 36443856 PMCID: PMC9703697 DOI: 10.1186/s13075-022-02949-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 11/03/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Numerous potential therapeutic alternatives for intervertebral disc degeneration (IDD) have been investigated, the most promising of which are based on biological variables such as microRNAs (miRNAs). Therefore, we verified the hypothesis that miRNAs modulate IDD by affecting the FBXO21-ERK signalling pathway. METHODS Microarray and quantitative real-time polymerase chain reaction (RT-qPCR) tests were used to examine the expression profiles of miRNAs in nucleus pulposus (NP) cells between patients with IDD and controls. Western blotting and luciferase reporter assays were used to identify the miRNA targets. RESULTS Microarray and RT-qPCR assays confirmed that the expression level of miR-217 was significantly decreased in degenerative NP cells. CpG islands were predicted in the miR-217 promoter region. The IDD group had considerably higher methylation than the control group. Gain- and loss-of-function experiments revealed that miR-217 mimics inhibited apoptosis and extracellular matrix (ECM) breakdown in NP cells. Bioinformatic analyses and luciferase assays were used to determine the connection between miR-217 and FBXO21. In vitro tests revealed that miR-217 mimics inhibited the expression of FBXO21, pERK, MMP13, and ADAMTS5 proteins, successfully protecting the ECM from degradation. Additionally, in vivo investigation using the IDD mouse model demonstrated that the miR-217 agonist may sufficiently promote NP cell proliferation, decrease apoptosis, promote ECM synthesis, and suppress the expression of matrix-degrading enzymes in NP cells. CONCLUSIONS Overexpression of miR-217 inhibits IDD via FBXO21/ERK regulation. TRIAL REGISTRATION This study was performed in strict accordance with the NIH guidelines for the care and use of laboratory animals (NIH Publication No. 85-23 Rev. 1985) and was approved by the human research ethics committee of Wuhan University Renmin Hospital (Approval No. RMHREC-D-2020-391), and written informed consent was obtained from each participant.
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Affiliation(s)
- Zhonghui Chen
- grid.490567.9Orthopaedic Surgery, Fuzhou Second Hospital, Fuzhou, China ,grid.256112.30000 0004 1797 9307The Third Clinical Medical College, Fujian Medical University, Fuzhou, China ,grid.412632.00000 0004 1758 2270Orthopaedic Surgery, Renmin Hospital of Wuhan University, No. 9 ZhangZhiDong Street, Wuchang District, Wuhan, Hubei China
| | - Jianghua Ming
- grid.412632.00000 0004 1758 2270Orthopaedic Surgery, Renmin Hospital of Wuhan University, No. 9 ZhangZhiDong Street, Wuchang District, Wuhan, Hubei China
| | - Yajing Liu
- grid.412632.00000 0004 1758 2270Department of Anaesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Geliang Hu
- grid.412632.00000 0004 1758 2270Orthopaedic Surgery, Renmin Hospital of Wuhan University, No. 9 ZhangZhiDong Street, Wuchang District, Wuhan, Hubei China
| | - Qi Liao
- grid.412632.00000 0004 1758 2270Orthopaedic Surgery, Renmin Hospital of Wuhan University, No. 9 ZhangZhiDong Street, Wuchang District, Wuhan, Hubei China
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Yu H, Hua Y, He Y, Wang Y, Hu X, Chen S, Liu J, Yang J, Li H. Sustained Release of MiR-217 Inhibitor by Nanoparticles Facilitates MSC-Mediated Attenuation of Neointimal Hyperplasia After Vascular Injury. Front Cardiovasc Med 2021; 8:739107. [PMID: 34708092 PMCID: PMC8542691 DOI: 10.3389/fcvm.2021.739107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 09/13/2021] [Indexed: 01/05/2023] Open
Abstract
Mesenchymal stem cells (MSCs) have been proven capable of differentiating into endothelial cells (ECs) and increasing vascular density in mouse ischemia models. However, the therapeutic potential of MSCs in neointimal hyperplasia after vascular injury is still not fully understood. In this study, we proposed that sustained release of miR-217 inhibitor encapsulated by nanoparticles in MSCs can enhance the therapeutic effects of MSCs on alleviating neointimal hyperplasia in a standard mouse wire injury model. We intravenously administered MSCs to mice with injured arteries and examined neointimal proliferation, endothelial differentiation and senescence. We demonstrated that MSCs localized to the luminal surface of the injured artery within 24 h after injection and subsequently differentiated into endothelial cells, inhibited neointimal proliferation and migration of vascular smooth muscle cells. Transfection of MSCs with poly lactic-co-glycolic acid nanoparticles (PLGA-NP) encapsulating an miR-217 agomir abolished endothelial differentiation as well as the therapeutic effect of MSCs. On the contrary, silencing of endogenous miR-217 improved the therapeutic efficacy of MSCs. Our study provides a new strategy of augmenting the therapeutic potency of MSCs in treatment of vascular injury.
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Affiliation(s)
- Hong Yu
- Department of Otorhinolaryngology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Yutao Hua
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Yecheng He
- Department of Clinical Medicine, Suzhou Vocational Health College, Suzhou, China
| | - Yin Wang
- Department of Cardiovascular Surgery, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Xingjian Hu
- Department of Cardiovascular Surgery, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Si Chen
- Department of Cardiovascular Surgery, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Junwei Liu
- Department of Cardiovascular Surgery, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Junjie Yang
- Department of Anesthesiology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Huadong Li
- Department of Cardiovascular Surgery, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
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Han X, Liang X, Wu M, Zhang L, Jiang H. Association of Genetic Variants in miR-217 Gene with Risk of Coronary Artery Disease: A Case-Control Study. Pharmgenomics Pers Med 2021; 14:1081-1086. [PMID: 34483680 PMCID: PMC8409599 DOI: 10.2147/pgpm.s324767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/15/2021] [Indexed: 11/23/2022] Open
Abstract
Objective To evaluate the associations of genetic variants of the miR-217 gene with coronary artery disease (CAD) risk, as well as plasma level of vascular endothelial growth factor (VEGF). Methods A case-control study with 498 CAD patients and 499 frequency-matched healthy controls was conducted to evaluate the associations of four tagSNPs of the miR-217 gene, including rs6724872, rs4999828, rs10206823, and rs41291177, with CAD risk and plasma level of VEGF. Results SNP rs6724872 and rs4999828 were significantly associated with increased risk of CAD (P value was smaller than 0.05 even after Bonferroni multiple adjustment). Compared with the G allele, C allele of rs6724872 was significantly associated with 1.73-fold increased risk of CAD (95% CI: 1.25-2.39; P = 0.001). While C allele of rs4999828 was significantly associated with 1.75-fold increased risk of CAD, compared with T allele (95% CI: 1.34-2.29; P = 4 × 10-5). Meanwhile, rs6724872 and rs4999828 were also significantly associated with higher level of VEGF (P < 0.001). Conclusion These findings highlighted the important role of genetic variants of the miR-217 gene in the pathogenesis of CAD and potential targets for intervention.
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Affiliation(s)
- Xia Han
- Department of Cardiology, Jinan People's Hospital Affiliated to Shandong First Medical University, Laiwu, 271199, People's Republic of China
| | - Xiaotang Liang
- Shandong Second Provincial General Hospital, Jinan, Shandong Province, 250000, People's Republic of China
| | - Menghai Wu
- Department of Cardiology, Jinan People's Hospital Affiliated to Shandong First Medical University, Laiwu, 271199, People's Republic of China
| | - Lijun Zhang
- Department of Cardiology, Jinan People's Hospital Affiliated to Shandong First Medical University, Laiwu, 271199, People's Republic of China
| | - Honglei Jiang
- Shandong Second Provincial General Hospital, Jinan, Shandong Province, 250000, People's Republic of China
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Huang ZM, Wang H, Ji ZG. Bladder mesenchymal stromal cell-derived exosomal miRNA-217 modulates bladder cancer cell survival through Hippo-YAP pathway. Inflamm Res 2021; 70:959-969. [PMID: 34390377 DOI: 10.1007/s00011-021-01494-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/04/2021] [Accepted: 08/06/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Donor cell-derived exosomes regulate recipient cell functions. The aim of this study was to investigate the effect of human normal bladder stromal cell (hBSC) derived exosomal miR-217 on bladder cell cancer proliferation and migration. METHODS Human BSCs were transfected with miR-217 mimic or inhibitor and hBSC-derived exosomes were isolated. Human bladder cancer cell lines (T24 and 5367) were co-cultured with hBSC-derived exosomal miR-217 mimic or inhibitor. Proliferation, migration, and apoptosis of the bladder cancer cells were assessed by Edu assay, Transwell migration assay, and Annexin V assay. RESULTS Expression of miR-217 was significantly higher in the T24 and 5367 cell lines (P < 0.01). Exosomal miR-217 mimic enhanced proliferation and migration of T24 and 5367 cells, but inhibited apoptosis of the cells (P < 0.01); in contrast, exosomal miR-217 inhibitor suppressed proliferation and migration but stimulated apoptosis of the two cancer cell lines (P < 0.01). Moreover, exosomal miR-217 mimic stimulated YAP and its target proteins including Cyr61, CTGF, and ANKRD1 (P < 0.01), and in contrast, exosomal miR-217 inhibitor suppressed YAP and its target proteins (P < 0.01). CONCLUSION These findings suggested that hBSC-derived exosomal miR-217 may act as oncogene in bladder cancer cells, and that Hippo-YAP signaling pathway maybe the target for miR-217 in the bladder cancer cell lines.
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Affiliation(s)
- Zhong-Ming Huang
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, No.1 Shuaifuyuan Wangfujing, Dongcheng, Beijing, 100730, China
| | - Hai Wang
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, No.1 Shuaifuyuan Wangfujing, Dongcheng, Beijing, 100730, China
| | - Zhi-Gang Ji
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, No.1 Shuaifuyuan Wangfujing, Dongcheng, Beijing, 100730, China.
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Abstract
Intramuscular fat is positively related to meat quality including tenderness, flavor, and juiciness. Long noncoding RNA (LncRNA) plays a vital role in regulating adipogenesis. However, it is largely unknown about lncRNAs associated with porcine intramuscular adipocyte adipogenesis. In the present study, we focus on a novel LncRNA, which is named lncIMF2, associated with adipogenesis by our previous RNA-sequence analysis and bioinformatics analysis. We demonstrated LncIMF2 knockdown inhibited the proliferation of porcine intramuscular adipocytes while expression of cell cycle-related genes was decreased. Besides, we found LncIMF2 knockdown inhibited expression of adipogenic differentiation marker genes including PPARγ (Peroxisome proliferator-activated reporter gamma) and ATGL (Adipose triglyceride lipase). Similarly, overexpression of LncIMF2 promotes proliferation and differentiation of porcine intramuscular preadipocytes. Moreover, we proved that IncIMF2 acts as a molecular sponge for MicroRNA-217 (miR-217), which has been found associated with adipogenesis, thereby affecting the expression of the miR-217 target gene. Collectively, our findings will contribute to a deeper understanding of the role of LncRNA in pig IMF deposition for the improvement of meat quality.
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Affiliation(s)
- XuDong Yi
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Shaanxi, P.R. China
| | - ZhaoZhao He
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Shaanxi, P.R. China
| | - TingTing Tian
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Shaanxi, P.R. China
| | - ZhongYun Kou
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Shaanxi, P.R. China
| | - WeiJun Pang
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Shaanxi, P.R. China
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He ZY, Huang MT, Cui X, Zhou ST, Wu Y, Zhang PH, Zhou J. Long noncoding RNA GAS5 accelerates diabetic wound healing and promotes lymphangiogenesis via miR-217/Prox1 axis. Mol Cell Endocrinol 2021; 532:111283. [PMID: 33865922 DOI: 10.1016/j.mce.2021.111283] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 03/12/2021] [Accepted: 04/11/2021] [Indexed: 01/13/2023]
Abstract
BACKGROUND Diabetes is usually the leading cause of chronic non-healing wounds. LncRNA-GAS5 has been verified to be involved in the regulation of diabetes or high glucose (HG)-stimulated cells. However, its regulatory roles in diabetic wound healing need further investigation. METHOD GAS5, miR-217 and Prox1 were identified by qRT-PCR. MTT, flow cytometry assay, wound-healing assay and tube formation were used to analyze cell viability, apoptosis, migration and tube formation capacity. Western blotting was carried out to detect the protein expression of c-Myc, CyclinD1, CDK4, Bcl-2, Prox1, VEGFR-3 and LYVE-1. Bioinformatics and luciferase assay were performed to predict and validate the binding sites of miR-217 on GAS5 and Prox1. Immunofluorescence staining detected the expression and distribution of Prox1. The wound healing rate was also assessed by setting up the diabetic mouse model. H&E staining assessed the distribution of inflammatory cells and fibroblasts in the wound tissues. RESULTS GAS5 was significantly down-regulated whereas miR-217 was obviously up-regulated in diabetic skin, HG-induced lymphatic endothelial cells (LECs) and diabetic mouse model. GAS5 sponged miR-217 to up-regulate Prox1. GAS5 overexpression or miR-217 inhibition rescued the impairments of cell viability, migration and lymphatic vessel formation and the facilitation of apoptosis of LECs caused by HG. Similar impacts were observed on the protein level of VEGFR-3, LYVE-1, and Prox1. GAS5 promoted wound healing and lymphangiogenesis in the diabetic mouse model. CONCLUSION GAS5 sponged miR-217 to up-regulate Prox1 and promote lymphangiogenesis and diabetic wound healing. This might provide novel therapeutic strategy to improve the efficacy of diabetic wound healing.
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Affiliation(s)
- Zhi-You He
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China
| | - Mi-Tao Huang
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China
| | - Xu Cui
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China
| | - Si-Tuo Zhou
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China
| | - Ying Wu
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China
| | - Pi-Hong Zhang
- Department of Burns and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China
| | - Jie Zhou
- Department of Burns and Reconstructive Surgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, PR China.
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Zhao K, Cheng X, Ye Z, Li Y, Peng W, Wu Y, Xing C. Exosome-Mediated Transfer of circ_0000338 Enhances 5-Fluorouracil Resistance in Colorectal Cancer through Regulating MicroRNA 217 ( miR-217) and miR-485-3p. Mol Cell Biol 2021; 41:e00517-20. [PMID: 33722958 DOI: 10.1128/MCB.00517-20] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 02/16/2021] [Indexed: 02/06/2023] Open
Abstract
Exosomes are microvesicles secreted by body cells for intercellular communication. The circular RNA circ_0000338 was found to be present in extracellular vesicles and improve the chemoresistance of colorectal cancer (CRC) cells. However, the role of exosomal circ_0000338 in 5-fluorouracil (5-FU) resistance in CRC is largely unknown. The levels of circ_0000338, microRNA 217 (miR-217), and miR-485-3p were detected using quantitative real-time PCR (qRT-PCR). The 50% inhibitory concentration (IC50) values of cells for 5-FU, cell proliferation, and apoptosis were evaluated using cell counting kit 8 (CCK-8), colony formation, flow cytometry, and Western blot assays. The interaction between miR-217 or miR-485-3p and circ_0000338 was confirmed by RNA immunoprecipitation (RIP), dual-luciferase reporter, and pulldown assays. Exosomes were isolated by ultracentrifugation and qualified by transmission electron microscopy (TEM), Nanosight tracking analysis (NTA), and Western blotting. Xenograft models were performed to analyze whether circ_0000338-loaded exosomes could increase resistance of CRC cells to 5-FU in vivo The circ_0000338 level was elevated in 5-FU-resistant CRC tissues and cells, and circ_0000338 knockdown sensitized 5-FU-resistant CRC cells to 5-FU through enhancing apoptosis and decreasing proliferation in vitro Mechanistically, circ_0000338 directly bound to miR-217 and miR-485-3p, and the inhibition of miR-217 or miR-485-3p reversed the effects of circ_0000338 knockdown on cell 5-FU resistance in CRC. Additionally, extracellular circ_0000338 could be incorporated into secreted exosomes and transmitted to 5-FU-sensitive cells. Treatment-sensitive cells with exosomes containing circ_0000338 reduced the 5-FU response in CRC both in vitro and in vivo Besides that, the exosomal circ_0000338 concentration was higher in patients exhibiting resistance to 5-FU and showed good diagnostic efficiency in 5-FU-resistant CRC. The delivery of circ_0000338 via exosomes enhanced 5-FU resistance in CRC through negative regulation of miR-217 and miR-485-3p, indicating a promising diagnostic and therapeutic marker for 5-FU-based chemotherapy in CRC patients.
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Chi X, Guo Y, Zhang L, Zhang J, Du Y, Zhao W, Wang M, Feng M, Guo Y, Wang J, Zhang L, Zhang W. Long non-coding RNA GAS5 regulates Th17/Treg imbalance in childhood pneumonia by targeting miR-217/STAT5. Cell Immunol 2021; 364:104357. [PMID: 33862314 DOI: 10.1016/j.cellimm.2021.104357] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/02/2021] [Accepted: 03/22/2021] [Indexed: 10/21/2022]
Abstract
The imbalance of helper T (Th) 17 and regulatory T (Treg) cells plays an important role in the pathogenesis of pneumonia. This study aims to investigate the role and mechanism of long non-coding RNA growth arrest-specific 5 (GAS5) in the differentiation of Th17 cells and Tregs in childhood pneumonia. Expression of GAS5, miR-217, signal transducer and activator of transcription-5 (STAT5), receptor-related orphan receptor γt (RORγt), and transcription factor Forkhead box P3 (Foxp3) were examined by qRT-PCR and western blot. The percentage of Th17 cells and Tregs in CD4+ T cells were measured by flow cytometry. The interaction between miR-217 and GAS5 or STAT5 was analyzed by luciferase reporter assay. Downregulated GAS5 expression and Treg cell percentage, and upregulated Th17 cell percentage were observed in pneumonia patients when compared with the healthy controls. Furthermore, GAS5 overexpression corrected the imbalanced Th17/Treg in peripheral blood CD4+ T cells derived from pneumonia patients, and this effect was reversed by miR-217 mimic and STAT5 silencing. Mechanistically, GAS5 acted as a sponge of miR-217 to reduce binding of miR-217 to its target STAT5, leading to upregulation of STAT5 expression. Taken together, GAS5 corrects the Treg/Th17 imbalance by targeting the miR-217/STAT5 axis in childhood pneumonia.
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Affiliation(s)
- Xiaowen Chi
- Department of Pediatric, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150036, China
| | - Yuening Guo
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Lijuan Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Jiawen Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Yumin Du
- Department of Pediatric, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150036, China
| | - Wencheng Zhao
- Department of Pediatric, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150036, China
| | - Mengyao Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Mingfa Feng
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Youfang Guo
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Jianmei Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Liying Zhang
- Department of Pediatric, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150036, China
| | - Wei Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China.
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Li G, Zhong S. MicroRNA-217 inhibits the proliferation and invasion, and promotes apoptosis of non-small cell lung cancer cells by targeting sirtuin 1. Oncol Lett 2021; 21:386. [PMID: 33777209 PMCID: PMC7988702 DOI: 10.3892/ol.2021.12647] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 10/22/2020] [Indexed: 11/17/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is a common malignancy worldwide. MicroRNA (miR)-217 and sirtuin 1 (SIRT1) have been reported to play significant roles in different types of cancer, such as osteosarcoma and prostate cancer; however, the association between miR-217 and SIRT1 in the cell proliferation, apoptosis and invasion of NSCLC remain unknown. Thus, the present study aimed to investigate the roles of miR-217 and SIRT1 in NSCLC. The expression levels of miR-217 and SIRT1 were detected via reverse transcription-quantitative (RT-q)PCR and western blot analyses. The effect of miR-217 on A549 and H1299 cell proliferation, apoptosis and invasion was assessed via the Cell Counting Kit-8, flow cytometry and Transwell assays, respectively. In addition, the association between SIRT1 and miR-217 was predicted using the TargetScan database, and verified via the dual-luciferase reporter assay, and RT-qPCR and western blot analyses. The results demonstrated that miR-217 expression was significantly downregulated, while SIRT1 expression was significantly upregulated in A549 and H1299 cells compared with the human bronchial epithelial cells. Furthermore, transfection with miR-217 mimic significantly inhibited A549 and H1299 cell proliferation and invasion, and induced A549 and H1299 cell apoptosis. The results of the dual-luciferase reporter assay and western blot analysis confirmed that SIRT1 is a target gene of miR-217. In addition, miR-217 inhibited the activation of AMP-activated protein kinase (AMPK) and mTOR signaling. Taken together, the results of the present study suggest that miR-217 inhibits A549 and H1299 cell proliferation and invasion, and induces A549 and H1299 cell apoptosis by targeting SIRT1 and inactivating the SIRT1-mediated AMPK/mTOR signaling pathway. Thus, miR-217 may be used as a potential therapeutic target for the treatment of patients with NSCLC.
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Affiliation(s)
- Guangshun Li
- Department of Thoracic, Xi'an Central Hospital, Xi'an, Shaanxi 710003, P.R. China
| | - Shouping Zhong
- Department of Thoracic, Xi'an Central Hospital, Xi'an, Shaanxi 710003, P.R. China
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Pasqualotto A, Ayres R, Longo L, Del Duca Lima D, Losch de Oliveira D, Alvares-da-Silva MR, Reverbel da Silveira T, Uribe-Cruz C. Chronic exposure to ethanol alters the expression of miR-155, miR-122 and miR-217 in alcoholic liver disease in an adult zebrafish model. Biomarkers 2021; 26:146-151. [PMID: 33435755 DOI: 10.1080/1354750x.2021.1874051] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
AIM The aim of this study was to evaluate the hepatic and circulating expression of miR-155, miR-122 and miR-217 in a model of chronic exposure to ethanol in adult zebrafish. METHODS Wild-type adult zebrafish were divided into two groups (n = 281): an EG (exposed to 0.5% v/v Ethanol in aquarium water) and a CG (without ethanol). After 28 days the animals were euthanized, followed by histopathological analysis, quantification of lipids, triglycerides and inflammatory cytokines in liver tissue. miR-155, miR-122 and miR-217 gene expression was quantified in liver tissue and serum. RESULTS We observed hepatic lesions and increased accumulation of hepatic lipids in the EG. The expression of il-1β was higher in the EG, but there were no differences in il-10 and tnf-α between groups. In the liver, expression of miR-122 and miR-155 was higher in the EG. The circulating expression of miR-155 and miR-217 was significantly higher in the EG. CONCLUSION Chronic exposure to ethanol in zebrafish leads to altered hepatic and circulating expression of miR-155, miR-122 and miR-217. This confirms its potential as a biomarker and therapeutic target.
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Affiliation(s)
- Amanda Pasqualotto
- Experimental Hepatology and Gastroenterology Laboratory, Center for Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Graduate Program in Gastroenterology and Hepatology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Raquel Ayres
- Experimental Hepatology and Gastroenterology Laboratory, Center for Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Larisse Longo
- Experimental Hepatology and Gastroenterology Laboratory, Center for Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Graduate Program in Gastroenterology and Hepatology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Diego Del Duca Lima
- Graduate Program in Biological Sciences-Biochemistry, Department of Biochemistry, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Diogo Losch de Oliveira
- Graduate Program in Biological Sciences-Biochemistry, Department of Biochemistry, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Mário Reis Alvares-da-Silva
- Experimental Hepatology and Gastroenterology Laboratory, Center for Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Graduate Program in Gastroenterology and Hepatology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Themis Reverbel da Silveira
- Experimental Hepatology and Gastroenterology Laboratory, Center for Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Carolina Uribe-Cruz
- Experimental Hepatology and Gastroenterology Laboratory, Center for Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Graduate Program in Gastroenterology and Hepatology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Zhu X, Liu C, Shi J, Zhou Z, Chen S, Jami SA. Circular RNA circANKIB1 promotes the progression of osteosarcoma by regulating miR-217/PAX3 axis. J Bone Oncol 2021; 27:100347. [PMID: 33552886 PMCID: PMC7844576 DOI: 10.1016/j.jbo.2021.100347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 12/21/2020] [Accepted: 01/05/2021] [Indexed: 11/17/2022] Open
Abstract
Background Circular RNAs (circRNAs) have been discovered to exert essential roles in human cancers, including osteosarcoma (OS). The aim of this study was to investigate the exact roles and regulatory mechanism of circRNA ankyrin repeat and IBR domain containing 1 (circANKIB1) in OS. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) was used to measure the expression levels of circANKIB1, microRNA-217 (miR-217) and paired box 3 (PAX3). Cell proliferation was assessed by colony formation assay. Cell cycle distribution and apoptosis rate were determined by flow cytometry analysis. Wound healing assay and transwell assay were employed to evaluate cell migration and invasion abilities. Western blot assay was used to analyze the protein levels of PAX3, E-cadherin and Vimentin. Targeting relationship between miR-217 and circANKIB1 or PAX3 was predicted by Circular RNA Interactome or TargetScan and demonstrated by dual-luciferase reporter assay. The mice xenograft model was established to confirm the role of circANKIB1 in vivo. Results CircANKIB1 and PAX3 were high-expressed, whereas miR-217 was low-expressed in OS tissues and cells. Knockdown of circANKIB1 inhibited the progression of OS by reducing cell proliferation, migration, invasion, and tumor growth (in vivo), and inducing apoptosis. MiR-217 was a direct target of circANKIB1, and its inhibition reversed the inhibitory effect of circANKIB1 knockdown on the progression of OS cells. Moreover, PAX3 was a direct target of miR-217, and miR-217 exerted the anti-tumor role in OS cells by targeting PAX3. Furthermore, circANKIB1 positively regulated PAX3 expression by sponging miR-217. Conclusion Knockdown of circANKIB1 suppressed OS progression by upregulating miR-217 and downregulating PAX3, which might provide a novel insight into the pathogenesis of OS.
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Affiliation(s)
- Xi Zhu
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
| | - Changhao Liu
- Department of Spinal Surgery, Ningxia Medical University, Ningxia, China
| | - Jiandang Shi
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
- Corresponding author at: Department of Spinal Surgery, General Hospital of Ningxia Medical University, No. 804 Shengli South Street, Yinchuan City, Ningxia Hui Autonomous Region 750004, China.
| | - Zhanwen Zhou
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
| | - Suoli Chen
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
| | - Sayed Abdulla Jami
- Department of Spinal Surgery, General Hospital of Ningxia Medical University, Ningxia, China
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25
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Yang X, Meng L, Zhong Y, Hu F, Wang L, Wang M. The long intergenic noncoding RNA GAS5 reduces cisplatin-resistance in non-small cell lung cancer through the miR-217/LHPP axis. Aging (Albany NY) 2021; 13:2864-2884. [PMID: 33418541 PMCID: PMC7880381 DOI: 10.18632/aging.202352] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 11/03/2020] [Indexed: 12/20/2022]
Abstract
Long noncoding RNAs (lncRNAs) are known to exert their effects to tumor progression. In this study, the role of the lncRNA GAS5 (growth arrest specific 5) was confirmed in reducing non-small cell lung cancer (NSCLC) cisplatin (DDP) resistance. In NSCLC tissue samples, GAS5 expression decreased significantly. Low GAS5 levels were positively correlated with NSCLC characteristics including TNM, tumor size and lymphatic metastasis. Functionally, GAS5 significantly reduced NSCLC/DDP cell migration, invasion and epithelial-mesenchymal transition (EMT) progression in vitro. In vivo, GAS5 upregulation inhibited remarkably NSCLC/DDP cell tumor growth. Mechanism analysis suggested that GAS5 was a molecular sponge of miR-217, inhibiting the expression of phospholysine phosphohistidine inorganic pyrophosphate phosphatase (LHPP). In conclusion, this study reveals that the GAS5/miR-217/LHPP pathway reduces NSCLC cisplatin resistance and that LHPP may serve as a potential therapeutic target for NSCLC cisplatin resistance.
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Affiliation(s)
- Xuhui Yang
- Department of Thoracic Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Lifei Meng
- Department of Thoracic Surgery, Ningbo First Hospital, Ningbo, China
| | - Yuang Zhong
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Fengqing Hu
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Lei Wang
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Mingsong Wang
- Department of Thoracic Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
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26
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Wang Z, Shi D, Zhang N, Yuan T, Tao H. MiR-217 promotes endothelial cell senescence through the SIRT1/p53 signaling pathway. J Mol Histol 2021; 52:257-67. [PMID: 33392891 DOI: 10.1007/s10735-020-09945-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 12/07/2020] [Indexed: 01/11/2023]
Abstract
Studies have shown that miR-217 can induce cell senescence, but its mechanism of action in vascular endothelial cell senescence is less reported. Therefore, this study aimed to investigate how miR-217 plays a role in endothelial cell senescence. Human umbilical vein endothelial cells (HUVECs) were used to replicate the aging model, and the population doubling levels (PDLs) during cell passage were counted. Senescence-associated β-galactosidase (SA-β-gal) staining, Real-time quantitative PCR (RT-qPCR), MTT assay, Transwell, and tube formation were used to detect the effects of miR-217 on young and senescent HUVECs. Targetscan7.2 and luciferase assay predicted and verified the relationship between miR-217 and the target gene, and the expression of silent information regulator 1 (SIRT1) and p53 was detected by RT-qPCR and western blot. In addition, SA-β-gal staining detected the effects of miR-217 inhibitor and SIRT1 on senescent HUVECs. MiR-217 was upregulated in senescent endothelial cells. Overexpression of miR-217 promoted the increase of SA-β-gal positive cells, and inhibited proliferation, migration and angiogenesis during endothelial cell growth. Furthermore, SIRT1 was a target gene of miR-217. Simultaneous silencing of SIRT1 reversed the effect of miR-217 inhibitor on the reduction of SA-β-gal positive-staining cells. Our data suggest that overexpression of miR-217 promoted vascular endothelial cell senescence by targeting the SIRT1/p53 signaling pathway, which may provide a new basis for studying the mechanism of action in vascular endothelial cell senescence.
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27
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Wang Q, Yang L, Fan Y, Tang W, Sun H, Xu Z, Zhou J, Zhang Y, Zhu B, Cao X. Circ-ZDHHC5 Accelerates Esophageal Squamous Cell Carcinoma Progression in vitro via miR-217/ZEB1 Axis. Front Cell Dev Biol 2020; 8:570305. [PMID: 33392180 PMCID: PMC7773775 DOI: 10.3389/fcell.2020.570305] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 10/21/2020] [Indexed: 01/01/2023] Open
Abstract
Circular RNA (circRNA) exhibits a covalently closed circular conformation and is structurally stable. Nevertheless, the precise effects exerted by circRNA in esophageal squamous cell carcinoma (ESCC) remains uncertain. circRNA was ascertained by a human circRNA array study and was confirmed by the quantification of reverse transcriptase polymerase reactions. A luciferase reporter, fluorescence in situ hybridization experiment was exploited to explore the interaction between circ-ZDHHC5 and miR-217. The function of circ-ZDHHC5 was determined by siRNA-mediated knockout of circ-ZDHHC5 in in vitro proliferation, migration, and invasion. circ-ZDHHC5, rather than linear ZDHHC5 mRNA, rose in the tissues of patients with ESCC, plasma, and ESCC cell lines in comparison with normal controls. Knockdown of circ-ZDHHC5 inhibited tumorigenesis in ESCC cells, and the co-transfection of si-circ-ZDHHC5 and miR-217 mimics further enhanced the above effect. Noticeably, the present study showed that circ-ZDHHC5 was an miR-217 sponge that modulated the expression of zinc finger E-box binding homeobox 1 (ZEB1), further facilitating ESCC tumorigenesis. As revealed by this study, circ-ZDHHC5 can act as a new potential circular biomarker for detecting ESCC. It provides a novel perceptivity for the treatment of ESCC suggesting that circ-ZDHHC5 could impact on ESCC progression by sponging miR-217 with ZEB1.
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Affiliation(s)
- Qian Wang
- Department of Oncology Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,Research Unit Analytical Pathology, Helmholtz Zentrum M nchen, German Research Centre for Environmental Health (GmbH), Neuherberg, Germany
| | - Lili Yang
- Department of Oncology Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yanxin Fan
- Department of Radiation Oncology, Nanjing Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Weiwei Tang
- Department of Oncology Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Handong Sun
- Department of Oncology Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Zhipeng Xu
- Department of Oncology Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Jian Zhou
- Department of Oncology Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yanzhou Zhang
- Department of Oncology Surgery and Cancer Centre, Affiliated Taikang Xianlin Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Bin Zhu
- Department of Oncology Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xiufeng Cao
- Department of Oncology Surgery and Cancer Centre, Affiliated Taikang Xianlin Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, China.,Department of Oncology Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
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28
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Zhou W, Ye S, Wang W. miR-217 alleviates high-glucose-induced vascular smooth muscle cell dysfunction via regulating ROCK1. J Biochem Mol Toxicol 2020; 35:e22668. [PMID: 33283391 DOI: 10.1002/jbt.22668] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/21/2020] [Accepted: 11/04/2020] [Indexed: 11/06/2022]
Abstract
MicroRNA-217 (miR-217) has been recently reported to be abnormally expressed during atherosclerosis. Nonetheless, it still remains unknown whether miR-217 can regulate inflammation, proliferation, migration, and apoptosis of vascular smooth muscle cells (VSMCs) in high-glucose condition. Sprague Dawley rats were used for establishing diabetic animal models. miR-217 mimics and miR-217 inhibitors were transfected into VSMCs. The miR-217 and ROCK1 expressions were measured by quantitative reverse transcription-polymerase chain reaction and Western blot. VSMCs' proliferation, migration, cell cycle, and apoptosis were validated using the Cell Counting Kit-8 assay, Transwell assay, and flow cytometry analysis, respectively. The binding sites between miR-217 and the 3'-untranslated region of ROCK1 were predicted via miRanda, PicTar, TargetScan, and microT databases, and the targeting relationship was confirmed by dual-luciferase reporter experiments. miR-217 was found to be upregulated in VSMCs treated by high glucose and aorta VSMCs of diabetic rats. Transfection of miR-217 mimics significantly induced VSMCs cycle arrest, inhibition of proliferation, reduction of migration, and enhancement of apoptosis. The bioinformatics analysis and dual-luciferase reporter experiments identified ROCK1 as a direct target of miR-217. miR-217 inhibits excessive proliferation and migration of VSMCs induced by high glucose by targeting ROCK1.
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Affiliation(s)
- Wan Zhou
- Division of Life Science and Medicine, Department of Endocrinology, Anhui Provincial Hospital, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui, Hefei, China
| | - Shandong Ye
- Division of Life Science and Medicine, Department of Endocrinology, Anhui Provincial Hospital, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui, Hefei, China
| | - Wei Wang
- Division of Life Science and Medicine, Department of Endocrinology, Anhui Provincial Hospital, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui, Hefei, China
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29
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Zhou C, Chen Y, He X, Zheng Z, Xue D. Functional Implication of Exosomal miR-217 and miR-23b-3p in the Progression of Prostate Cancer. Onco Targets Ther 2020; 13:11595-11606. [PMID: 33209036 PMCID: PMC7670263 DOI: 10.2147/ott.s272869] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/28/2020] [Indexed: 12/17/2022] Open
Abstract
Objective The microRNA expression profile of plasma exosomes in prostate cancer (PCa) is of critical importance in the disease exploration. This study aimed to explore the clinical application of exosomal miRNAs as biomarkers for PCa. Methods Exosome-like vesicles of PCa patients and healthy controls were purified by differential centrifugation. The purified vesicles within the ranges of 50 and 100 nm were classified as exosomes according to the results of transmission electron microscopy and Western blot. Both, in vitro and in vivo, validations were performed by small RNA sequencing, CCK8, RT-qPCR, flow cytometry, Western blot, transwell and immunofluorescent staining assays. Results High-throughput sequencing identified that 94 miRNAs were differentially expressed in PCa patients in comparison with healthy controls (P<0.01; fold change ≥2). Among them, 64 miRNAs were upregulated, and 30 miRNAs were downregulated. In comparison to the healthy controls, the expression levels of miR-217 were significantly upregulated, while miR-23b-3p were significantly downregulated in the exosomes and serum collected from PCa patients. Both, in vitro and in vivo, studies revealed that exosomes secreted by PCa cells with up-regulated miR-217 levels promoted cell proliferation and invasion; meanwhile, the exosomes with up-regulated miR-23b-3p levels inhibited cell proliferation and invasion. The epithelial–mesenchymal transition process may have been involved in the above-mentioned regulation. Conclusion This study identified the dysregulated expression of exosomal miRNAs in PCa patients, including miR-217 and miR-23b-3p, by validating their function on proliferation and invasion in PCa cells. This regulation may have been affected by the epithelial–mesenchymal transition process, suggesting that they can be used as potential targets in the diagnosis and treatment of PCa.
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Affiliation(s)
- Cuixing Zhou
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, People's Republic of China
| | - Yimeng Chen
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, People's Republic of China
| | - Xiaozhou He
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, People's Republic of China
| | - Zhuojun Zheng
- Department of Hematology, The Third Affiliated Hospital of Soochow University, Changzhou, People's Republic of China
| | - Dong Xue
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, People's Republic of China
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Fan YX, Shi HY, Hu YL, Jin XL. Circ_0000144 facilitates the progression of thyroid cancer via the miR-217/AKT3 pathway. J Gene Med 2020; 22:e3269. [PMID: 32890417 DOI: 10.1002/jgm.3269] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 08/26/2020] [Accepted: 08/29/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Thyroid carcinoma (TC) is the most common malignancy of the endocrine system. Circular RNA (circRNA) is vital in the regulation of tumor progression. Circ_0000144 serves as a novel oncogenic circRNA, and miR-217 is reported to inhibit the malignant phenotypes of cancer cells by targeting AKT3 in TC. The present study aimed to explore the regulatory mechanism of circ_0000144 and miR-217 in the progression of TC. METHODS Circ_0000144 expression in 32 pairs of TC tissues and different TC cell lines (including BCPAP, K1, H7H83, and TPC-1) was detected by employing a quantitative real-time polymerase chain reaction (qRT-PCR). Circ_0000144 small interfering RNA was used to establish loss-of-function models. Cell counting kit-8 (CCK-8), BrdU (5-bromo-2'-deoxyuridine) and transwell assays were utilized to verify the effects of circ_0000144 on TC cell proliferation, migration and invasion, respectively. Bioinformatics, western blotting, a luciferase reporter experiment and qRT-PCR were employed to confirm the relationships among circ_0000144, miR-217 and AKT3. RESULTS Circ_0000144 expression was remarkably elevated in TC tissues (p < 0.001) and TC cell lines. The elevation of circ_0000144 expression was markedly linked to tumor size (p = 0.015), TNM stage (p = 0.025) and lymph node metastasis (p = 0.017) of the patients. Functional studies showed that knocking down circ_0000144 repressed the malignancy of TC cells. Furthermore, miR-217 was identified as a downstream target of circ_0000144; inhibition of miR-217 could reverse the effects induced by circ_0000144 knockdown. Moreover, circ_0000144 could regulate AKT3 expression by suppressing miR-217 expression. CONCLUSIONS Circ_0000144 exerts a cancer-promoting effect on TC cells via the miR-217/AKT3 pathway.
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Affiliation(s)
- Yi-Xiang Fan
- Department of Nuclear Medicine, The Fifth Affiliated Hospital of Southern Medical University, Conghua District, Guangzhou, China
| | - Huan-Yang Shi
- The Clinical Specialty 5-Year Undergraduate Course, The First Clinical Medical College of Southern Medical University, Guangzhou, China
| | - Yu-Lin Hu
- Department of Nuclear Medicine, The Fifth Affiliated Hospital of Southern Medical University, Conghua District, Guangzhou, China
| | - Xiao-Li Jin
- Department of Nuclear Medicine, The Fifth Affiliated Hospital of Southern Medical University, Conghua District, Guangzhou, China
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Domvri K, Petanidis S, Anestakis D, Porpodis K, Bai C, Zarogoulidis P, Freitag L, Hohenforst-Schmidt W, Katopodi T. Exosomal lncRNA PCAT-1 promotes Kras-associated chemoresistance via immunosuppressive miR-182/ miR-217 signaling and p27/CDK6 regulation. Oncotarget 2020; 11:2847-62. [PMID: 32754302 DOI: 10.18632/oncotarget.27675] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 06/20/2020] [Indexed: 02/07/2023] Open
Abstract
Immunosuppressive chemoresistance is a major burden in lung cancer. Recent data reveal that long noncoding RNAs (lncRNAs) present in the lung tumor microenvironment are implicated in chemoresistant-related immune deregulation, and metastasis but their exact pathogenic role is still unknown. In this study, we investigate the role of lncRNA PCAT-1 in chemoresistant immunosuppression and its involvement in tumor stroma remodeling. Findings reveal PCAT-1 to regulate Kras-related lung chemoresistance through increased expression of the immunosuppressive micrornas miR-182/miR217 in lung tissues, thus promoting a pre-metastatic niche formation and a subsequent increase in lung metastatic burden. Elevated expression of PCAT-1 negative regulates p27/CDK6 expression by inducing G0/G1 cell cycle arrest through AMPK augmentation, contributing to a tumor-promoting status. Furthermore, PCAT-1 triggered fibroblast differentiation followed by CAF/myofibroblast secretion in TME triggering a CD133/SOX2-related stem cell phenotype. Subsequent PCAT-1 knockdown impaired CAF-mediated stromal activation, and reversed chemoresistance and tumor growth in vivo. Overall, these findings demonstrate the versatile roles of PCAT-1 in sustaining lung immunosuppressive neoplasia through tumor microenvironment remodeling and provide new opportunities for effective metastasis inhibition, especially in chemoresistant tumors.
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Zheng H, Li X, Yang X, Yan F, Wang C, Liu J. miR-217/Mafb Axis Involve in High Glucose-Induced β-TC-tet Cell Damage Via Regulating NF-κB Signaling Pathway. Biochem Genet 2020; 58:901-913. [PMID: 32627107 DOI: 10.1007/s10528-020-09984-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 06/25/2020] [Indexed: 12/12/2022]
Abstract
We attempt to explore the role of miR-217 during the process of type 2 diabetes mellitus (T2DM). Mouse β-TC-tet was dealt with 16.7 mM glucose (HG) to imitate the cells in T2DM. Cell proliferation and apoptosis were determined by cell counting kit-8 and flow cytometry. The correlation between miR-217 and Mafb was predicted with biological software and confirmed by dual lucifierase assay. Western blot was applied to detect protein expression. The data from GEO database exhibited that miR-217 was upregulated in T2DM patients. HG treatment upregulated the expression of miR-217, inhibited the proliferation, and promoted the apoptosis and inflammation of β-TC-tet cell. Depletion of miR-217 alleviated the damage of β-TC-tet cell caused by HG. Mafb was affirmed as a target of miR-217 and was negatively modulated by miR-217. Knockdown of Mafb attenuated the alleviation of miR-217 inhibitor on β-TC-tet cell damage. The expression of key proteins in NF-κB signaling pathway was upregulated by HG, and this upregulation tendency was inhibited by miR-217 inhibitor. Moreover, silencing Mafb could alleviate the inhibition of miR-217 inhibitor on these proteins. Our findings insinuated that inhibition of miR-217 could relieve β-TC-tet damage induced by HG through regulating Mafb and NF-κB signaling.
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Affiliation(s)
- Huizhen Zheng
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, P.R. China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012, Shandong, P.R. China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, 250012, Shandong, P.R. China.,Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012, Shandong, P.R. China
| | - Xinying Li
- Department of Emergency, Shandong Provincial Western Hospital, Shandong Provincial ENT Hospital, Jinan, Shandong, P.R. China
| | - Xinyu Yang
- Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, P.R. China
| | - Fei Yan
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, P.R. China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012, Shandong, P.R. China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, 250012, Shandong, P.R. China.,Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012, Shandong, P.R. China
| | - Chuan Wang
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, P.R. China.,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012, Shandong, P.R. China.,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, 250012, Shandong, P.R. China.,Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012, Shandong, P.R. China
| | - Jinbo Liu
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, P.R. China. .,Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, 250012, Shandong, P.R. China. .,Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, 250012, Shandong, P.R. China. .,Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, 250012, Shandong, P.R. China.
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Xu X, Song F, Jiang X, Hong H, Fei Q, Jin Z, Zhu X, Dai B, Yang J, Sui C, Xu M. Long Non-Coding RNA SNHG14 Contributes to the Development of Hepatocellular Carcinoma via Sponging miR-217. Onco Targets Ther 2020; 13:4865-4876. [PMID: 32581548 PMCID: PMC7269013 DOI: 10.2147/ott.s244530] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background Thousands of long non-coding RNAs (lncRNAs) have been functionally verified as crucial regulators of physiological processes and disease progressions, yet their roles in hepatocellular carcinoma (HCC) have not been clearly illuminated. Methods We analyzed the expression of lncRNA-SNHG14 in TCGA data via bioinformatic analysis and detected its expression in HCC specimens by reverse transcription‐quantitative polymerase chain reaction (RT‐qPCR). Loss-of-function experiments were used to study the biological function of SNHG14 in HCC cells. RT-qPCR, Western blotting and dual-luciferase reporter assay were carried out to investigate the molecular mechanism of SNHG14 in HCC. Results The upregulation of lncRNA-SNHG14 was observed in HCC tissues compared with normal tissues via RT-qPCR and bioinformatic analysis of TCGA data. Silencing of SNHG14 inhibited cell proliferation and induced cell apoptosis in HCC cells. microRNA-217 (miR-217), the tumor-suppressive miRNA in HCC, was predicted and confirmed as a miRNA sponged by SNHG14 in HCC cells. Via downregulation of miR-217, SNHG14 increased the expression of several miR-217-related oncogenes and subsequently activated oncogene-related signaling pathways in HCC cells. In addition, inhibition of miR-217 reversed SNHG14 silencing induced decrease of cell proliferation and increase of cell apoptosis. Their association was verified in the published microarray dataset and the collected HCC samples. Conclusion In summary, SNHG14 is involved in the development of HCC via sponging miR-217 and it may be a biomarker for patients with HCC.
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Affiliation(s)
- Xiaoyong Xu
- Department of Hepato-Pancreato-Biliary Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215001, People's Republic of China
| | - Feihong Song
- Department of Special Treatment and Liver Transplantation, Shanghai Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, People's Republic of China
| | - Xinwei Jiang
- Department of Hepato-Pancreato-Biliary Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215001, People's Republic of China
| | - Han Hong
- Department of Hepato-Pancreato-Biliary Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215001, People's Republic of China
| | - Qiang Fei
- Department of Hepato-Pancreato-Biliary Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215001, People's Republic of China
| | - Zhengkang Jin
- Department of Hepato-Pancreato-Biliary Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215001, People's Republic of China
| | - Xiang Zhu
- Department of Hepato-Pancreato-Biliary Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215001, People's Republic of China
| | - Binghua Dai
- Department of Special Treatment and Liver Transplantation, Shanghai Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, People's Republic of China
| | - Jiamei Yang
- Department of Special Treatment and Liver Transplantation, Shanghai Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, People's Republic of China
| | - Chengjun Sui
- Department of Special Treatment and Liver Transplantation, Shanghai Eastern Hepatobiliary Surgery Hospital, Shanghai 200438, People's Republic of China
| | - Minhui Xu
- Department of Hepato-Pancreato-Biliary Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215001, People's Republic of China
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Shi L, Tian Z, Fu Q, Li H, Zhang L, Tian L, Mi W. miR-217-regulated MEF2D-HDAC5/ND6 signaling pathway participates in the oxidative stress and inflammatory response after cerebral ischemia. Brain Res 2020; 1739:146835. [PMID: 32311345 DOI: 10.1016/j.brainres.2020.146835] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/03/2020] [Accepted: 04/13/2020] [Indexed: 12/22/2022]
Abstract
Multiple factors are known to contribute to the pathogenesis of cerebral ischemic injury, including microRNAs (miRNAs). However, the precise mechanism of miRNAs involvement in cerebral ischemia remains largely unclear. In the current study, we found that miR-217 was significantly upregulated in ischemic stroke models, and the upregulation of miR-217 was associated with the development of post-stroke cognitive impairment. Further investigation revealed that myocyte enhancer factor 2D (MEF2D) was the direct target of miR-217. In vitro experiments showed that miR-217 promoted aggregation of histone deacetylase 5 (HDAC5) in cell nuclei by targeting MEF2D, which led to decreased expression of interleukin (IL)-10. In addition, miR-217 inhibited the expression of NADH dehydrogenase subunit 6 (ND6) in a MEF2D-dependent manner. Overexpression of MEF2D can reverse oxygen-glucose deprivation (OGD)-induced downregulation of ND6 and OGD-mediated neuronal apoptosis, and also reduce the elevated generation of reactive oxygen species (ROS) induced by OGD. Additionally, we found that in vivo administration of MEF2D overexpression plasmids increased IL-10 production and ameliorated cognitive impairment after cerebral ischemia. Taken together, these findings reveal a novel pathogenetic mechganism of cerebral ischemia-related brain injury involving the miR-217/MEF2D/HDAC5 axis and the miR-217/MEF2D/ND6 axis.
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Affiliation(s)
- Likai Shi
- Department of Anesthesiology, The First Medical Center of the Chinese People's Liberation Army (PLA) General Hospital, No. 28 Fuxing Road, Beijing 100853, China
| | - Zhenpu Tian
- Department of Anesthesiology, Hainan Hospital of the Chinese People's Liberation Army (PLA) General Hospital, Jianglin Road, Haitang District, Sanya, Hainan 572013, China
| | - Qiang Fu
- Department of Anesthesiology, The First Medical Center of the Chinese People's Liberation Army (PLA) General Hospital, No. 28 Fuxing Road, Beijing 100853, China
| | - Hao Li
- Department of Anesthesiology, The First Medical Center of the Chinese People's Liberation Army (PLA) General Hospital, No. 28 Fuxing Road, Beijing 100853, China
| | - Lifeng Zhang
- Department of Anesthesiology, Hainan Hospital of the Chinese People's Liberation Army (PLA) General Hospital, Jianglin Road, Haitang District, Sanya, Hainan 572013, China
| | - Li Tian
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, Tongji University, No. 1878 Sichuanbei Road, Shanghai 200081,China.
| | - Weidong Mi
- Department of Anesthesiology, The First Medical Center of the Chinese People's Liberation Army (PLA) General Hospital, No. 28 Fuxing Road, Beijing 100853, China.
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Fu X, Zhang J, He X, Yan X, Wei J, Huang M, Liu Y, Lin J, Hu H, Liu L. Circular RNA MAN2B2 promotes cell proliferation of hepatocellular carcinoma cells via the miRNA-217/MAPK1 axis. J Cancer 2020; 11:3318-3326. [PMID: 32231737 PMCID: PMC7097945 DOI: 10.7150/jca.36500] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 01/19/2020] [Indexed: 12/25/2022] Open
Abstract
The increasing incidence of hepatocellular carcinoma (HCC) is a major challenge worldwide. In the past few years, an increasing number of studies have suggested that circular RNAs (circRNAs) play an important role in the development of human tumors, including HCC, but our understanding of their function is still limited. In this study, we investigated differences in the expression of circRNA MAN2B2 (circMAN2B2) in hepatocellular tissues and paired normal tissues. We found that knockdown of circMAN2B2 expression in the HCC cell lines Hep-G2 and Huh-7 significantly inhibited cell proliferation by sponging (miRNA) miR-217 and inhibiting its function. Through a series of experiments, we also demonstrated that miR-217 functioned as a tumor suppressor molecule in HCC cells and regulated the expression of mitogen-activated protein kinase 1 (MAPK1). Restoration of MAPK1 rescued repression of cell proliferation induced by circMAN2B2 knockdown. In summary, our study indicated that circMAN2B2 acted as an onco-miRNA in HCC by sponging miRNA-217 to promote MAPK1 expression.
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Affiliation(s)
- Xiaoying Fu
- Shenzhen Third People's Hospital, Second Affiliated Hospital of Southern University of Science and Technology.,Shenzhen University
| | - Juanjuan Zhang
- Shenzhen Third People's Hospital, Second Affiliated Hospital of Southern University of Science and Technology
| | - Xing He
- Shenzhen Third People's Hospital, Second Affiliated Hospital of Southern University of Science and Technology
| | - Xu Yan
- Shenzhen Third People's Hospital, Second Affiliated Hospital of Southern University of Science and Technology
| | - Jian Wei
- Shenzhen Third People's Hospital, Second Affiliated Hospital of Southern University of Science and Technology
| | - Min Huang
- Shenzhen Third People's Hospital, Second Affiliated Hospital of Southern University of Science and Technology
| | - Yaya Liu
- Shenzhen Third People's Hospital, Second Affiliated Hospital of Southern University of Science and Technology
| | - Jianwei Lin
- Shenzhen People's Hospital. Shenzhen 518039, China
| | - Hongxing Hu
- Shenzhen Third People's Hospital, Second Affiliated Hospital of Southern University of Science and Technology
| | - Lei Liu
- Shenzhen Third People's Hospital, Second Affiliated Hospital of Southern University of Science and Technology
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Jiang B, Zhu SJ, Xiao SS, Xue M. MiR-217 Inhibits M2-Like Macrophage Polarization by Suppressing Secretion of Interleukin-6 in Ovarian Cancer. Inflammation 2019; 42:1517-29. [PMID: 31049770 DOI: 10.1007/s10753-019-01004-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Ovarian cancer is one of the most deadly cancers with rapid proliferation and poor prognosis among patients. Therapies focusing on regulation of tumor immunity and microenvironments are developing. MiR-217 was dysregulated in cancer progress and plays important roles in tumorigenesis and metastasis. However, the role of miR-217 in regulation of macrophage polarization and its underlying molecular mechanism remain unclear. The expression of miR-217 in ovarian cancerous tissues and cell lines were assessed by qRT-PCR. And we detected the staining of CD86 and CD206 via flow-cytometry and the levels of Arg-1 and CCR2 by western-blot in order to evaluate M2 macrophage polarization. The targeting regulation of miR-217 on pro-inflammatory factor IL-6 was assessed by dual-luciferase reporter assay and western-blot. ELISA assay was used to evaluate the secretion of IL-6 and IL-10 of cells. MiR-217 was found to be downregulated in ovarian cancerous tissues and cell lines. This downregulation correlated with an increased expression of the IL-6, Arg-1, CCR2, and CD206 gene. The overexpression of miR-217 in SKOV3 cells can inhibit the polarization of macrophages towards an M2-like phenotype. We also found that IL-6 was validated to induce M2 macrophage polarization and its secretion in SKOV-3 cells was inhibited by miR-217 directly. Moreover, we revealed that miR-217 suppressed M2 macrophage polarization partly thought JAK/STAT3 signal pathway. Taken together, these findings indicate that miR-217 inhibits tumor-induced M2 macrophage polarization through targeting of IL-6 and regulation JAK3/STAT3 signaling pathway, which may provide a potential therapeutic target for treating ovarian cancer.
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Li Y, Fei L, Wang J, Niu Q. Inhibition of miR-217 Protects Against Myocardial Ischemia-Reperfusion Injury Through Inactivating NF-κB and MAPK Pathways. Cardiovasc Eng Technol 2020; 11:219-227. [PMID: 31916040 DOI: 10.1007/s13239-019-00452-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 12/23/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE Recent studies have demonstrated that miRNAs play a vital role in regulating myocardial ischemia/reperfusion injury (MIRI). MiR-217 has been proven to be implicated in cardiac diseases such as chronic heart failure and cardiac myxoma. However, the role of miR-217 in MIRI is not clear. METHODS A mouse MIRI model was established and the myocardial infarct size was evaluated by TTC staining. The expression level of miR-217 in I/R group was determined by real-time polymerase chain reaction. Subsequently, MIRI mice and H9C2 cells were administrated with miR-217 inhibitor in vivo and in vitro, respectively. The levels of TNF-α and IL-6 were measured by commercially available ELISA kits. Blood and cell samples were collected for the measurement of lactate dehydrogenase (LDH) level and caspase-3 activity. Cell viability was assessed with the CCK-8 assay. We then explored the detailed molecular mechanisms by TargetScan 7.1 database and further studies were performed to prove the prediction by dual-luciferase reporter assay. RESULTS Larger stainless infarct areas were observed in the MIRI group, accompanied by inceased serum LDH activity, indicating the mouse MIRI model was successfully established. MiR-217 was up-regulated in MIRI mice and hypoxia/reoxygenation-treated H9C2 cells. MiR-217 knockdown alleviated the MIRI in MIRI mouse model, and also attenuated the myocardial hypoxia/reoxygenation injury in H9C2 cells. Moreover, dual specificity protein phosphatase 14 (DUSP14) was proved to be a target of miR-217. Besides, further study indicated that inhibition of miR-217 protected against MIRI through inactivating NF-κB and MAPK pathways via targeting DUSP14. CONCLUSIONS MiR-217 inhibition protected against MIRI through inactivating NF-κB and MAPK pathways by targeting DUSP14. This study may provide valuable diagnostic and factors and therapeutic agents for MIRI.
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Affiliation(s)
- Yanfang Li
- Department of Cardiovascular Medicine, Heji Hospital Affiliated to Changzhi Medical College, 271 East Taihang Street, Changzhi, 046000, Shanxi, China.
| | - Liping Fei
- Department of Cardiovascular Medicine, Heji Hospital Affiliated to Changzhi Medical College, 271 East Taihang Street, Changzhi, 046000, Shanxi, China
| | - Junli Wang
- Department of Cardiovascular Medicine, Heji Hospital Affiliated to Changzhi Medical College, 271 East Taihang Street, Changzhi, 046000, Shanxi, China
| | - Qingying Niu
- Department of Cardiovascular Medicine, Heji Hospital Affiliated to Changzhi Medical College, 271 East Taihang Street, Changzhi, 046000, Shanxi, China
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Liu J, Xue N, Guo Y, Niu K, Gao L, Zhang S, Gu H, Wang X, Zhao D, Fan R. CircRNA_100367 regulated the radiation sensitivity of esophageal squamous cell carcinomas through miR-217/Wnt3 pathway. Aging (Albany NY) 2019; 11:12412-12427. [PMID: 31851619 PMCID: PMC6949088 DOI: 10.18632/aging.102580] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 11/26/2019] [Indexed: 12/13/2022]
Abstract
Background: Circular RNAs (circRNAs) play important roles in regulating the radioresistance of esophageal squamous cell carcinoma (ESCC). This study aimed to determine the role of hsa_circRNA_100367 in regulating radioresistance of ESCC. Results: Higher expression and potency of endothelial to mesenchymal transformation (EMT) was found in radioresistant ESCC cells (KYSE-150R) than in ESCC cells (KYSE-150). Silencing circRNA_100367 inhibited the proliferation and migration of KYSE-150R cells, and decreased the expression of β-catenin (an important molecule in Wnt pathway) in KYSE-150R cells. Additionally, circRNA_100367 bound to miR-217, and miR-217 targeted Wnt3. Low Wnt3 expression was associated with the short survival time in patients with ESCC and Wnt3 knockdown inhibited the proliferation and migration of KYSE-150R cells. CircRNA_100367 enhanced the radioresistance of KYSE-150R cells through miR-217/Wnt3 pathway. In vivo, circRNA_100367 silence reduced the growth of KYSE-150R cells under radiation. Conclusion: Our results revealed that circRNA_100367 attenuated radioresistance of ESCC through miR-217/Wnt3 pathway. Methods: CircRNAs related with the radioresistance of ESCC were analyzed by hierarchical cluster analysis. The relationship between circRNA_100367 and miR-217, Wnt3 was detected by RNA immunoprecipitation (RIP), RNA pull-down and luciferase reporte assays. The proliferation and migration ESCC cells were detected by MTT, Transwell and colony formation assays.
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Affiliation(s)
- Junqi Liu
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Erqi, Zhengzhou 450000, China
| | - Nannan Xue
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Erqi, Zhengzhou 450000, China
| | - Yuexin Guo
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Erqi, Zhengzhou 450000, China
| | - Kerun Niu
- Department of Molecular and Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Liang Gao
- Center of Experimental Orthopaedics, Saarland University Medical Center, Kirrberger Strasse, Homburg 66421, Germany
| | - Song Zhang
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Erqi, Zhengzhou 450000, China
| | - Hao Gu
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Erqi, Zhengzhou 450000, China
| | - Xin Wang
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Erqi, Zhengzhou 450000, China
| | - Di Zhao
- Endocrinology Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Ruitai Fan
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Erqi, Zhengzhou 450000, China
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Lin CJ, Lan YM, Ou MQ, Ji LQ, Lin SD. Expression of miR-217 and HIF-1α/VEGF pathway in patients with diabetic foot ulcer and its effect on angiogenesis of diabetic foot ulcer rats. J Endocrinol Invest 2019; 42:1307-1317. [PMID: 31079353 DOI: 10.1007/s40618-019-01053-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 04/30/2019] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To investigate the expression of miR-217 and HIF-1α/VEGF pathway in patients with diabetic foot ulcer (DFU) and its effect on angiogenesis in DFU rats. METHODS The serum levels of miR-217, HIF-1α and VEGF were detected in DFU and simple diabetes mellitus (DM) patients, and healthy controls. DFU rat models were established and treated with miR-217 inhibitors and/or HIF-1α siRNA. The ulcer healing of DFU rats was observed. Besides, ELISA method was performed to detect the serum level of HIF-1α, VEGF and inflammatory factors, immunohistochemical (IHC) method to test the micro-vessel density (MVD), as well as qRT-PCR and Western blot to determine expressions of miR-217, HIF-1α, VEGF, VEGFR2, eNOS, MMP-2, and MMP-9 in tissues. RESULTS The serum levels of miR-217 were up-regulated while HIF-1α and VEGF were down-regulated in DFU patients and rats when compared with DM and healthy controls (all P < 0.05). Dual-luciferase reporter gene assay confirmed that HIF-1α was the direct target gene of miR-217. DFU rats treated with miR-217 inhibitors had decreased foot ulcer area and accelerated ulcer healing, with significantly reduced inflammatory factors (IL-1β, TNF-α and IL-6), as well as elevated HIF-1α and VEGF (all P < 0.05); meanwhile, they remarkably increased the MVD in foot dorsum wound tissues and the protein expressions of HIF-1α, VEGF, VEGFR2, eNOS, MMP-2, and MMP-9 (all P < 0.05). CONCLUSION Inhibiting miR-217 could up-regulate HIF-1α/VEGF pathway to promote angiogenesis and ameliorate inflammation of DFU rats, thereby effectively advancing the healing of ulcerated area.
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Affiliation(s)
- C-J Lin
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Shantou University Medical College, No. 57, Changping Road, Shantou, 515041, Guangdong, People's Republic of China.
| | - Y-M Lan
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Shantou University Medical College, No. 57, Changping Road, Shantou, 515041, Guangdong, People's Republic of China
| | - M-Q Ou
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Shantou University Medical College, No. 57, Changping Road, Shantou, 515041, Guangdong, People's Republic of China
| | - L-Q Ji
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Shantou University Medical College, No. 57, Changping Road, Shantou, 515041, Guangdong, People's Republic of China
| | - S-D Lin
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Shantou University Medical College, No. 57, Changping Road, Shantou, 515041, Guangdong, People's Republic of China
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He S, Wang Z, Tang H, Dong J, Qu Y, Lv J. MiR-217 Inhibits Proliferation, Migration, and Invasion by Targeting SIRT1 in Osteosarcoma. Cancer Biother Radiopharm 2019; 34:264-270. [PMID: 31070483 DOI: 10.1089/cbr.2017.2394] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Purpose: Many studies have revealed that microRNAs (miRNAs) play crucial roles in cancer development and progression. miRNA-217 (miR-217) has been implicated in various cancers. However, the role of miR-217 in osteosarcoma (OS) remains unclear. In this study, the authors examined the role of miR-217 in development of OS. Materials and Methods: Using quantitative real-time PCR, they assessed expression levels of miR-217 in cultured cells and patient samples and examined the proliferation, migration, and invasion of cultured cells by MTT cell proliferation assays, cell scratch test, and cell transwell test. The proliferation, migration, and invasion were examined for MG63 and U2OS transfected by miR-217. Silent information regulator 2 homolog 1 (SIRT1) overexpression plasmid was designed. Results: Expression of miR-217 was downregulated in samples of OS tissue and cultured cells. Proliferation, migration, and invasion were inhibited by ectopic overexpression of miR-217. SIRT1 was identified as targets of miR-217. Expression levels of SIRT1 were inhibited by miR-217 expression in cultured cells, and the expression levels of miR-217 and SIRT1 were inversely correlated in patients with OS. Conclusion: MiR-217 acts as a tumor suppressor in the development of OS. The tumor-suppressive function of miR-217 in OS suggests inhibition of SIRT1.
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Affiliation(s)
- Shaoxuan He
- 1 Emergency Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Zhihua Wang
- 1 Emergency Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Hao Tang
- 1 Emergency Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Junjie Dong
- 2 Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yongzhou Qu
- 1 Emergency Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jia Lv
- 1 Emergency Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
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Luan W, Zhang X, Ruan H, Wang J, Bu X. Long noncoding RNA OIP5-AS1 acts as a competing endogenous RNA to promote glutamine catabolism and malignant melanoma growth by sponging miR-217. J Cell Physiol 2019; 234:16609-16618. [PMID: 30779126 DOI: 10.1002/jcp.28335] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 01/26/2019] [Accepted: 01/30/2019] [Indexed: 01/24/2023]
Abstract
The long noncoding RNA (lncRNA) OIP5-AS1 has been considered to promote the growth and metastasis of many human tumors. However, the role of OIP5-AS1 in melanoma has not been reported. In this study, we found that OIP5-AS1 levels were significantly elevated in melanoma tissue and that high OIP5-AS1 expression was an independent risk factor for the poor survival of patients with melanoma. miR-217 suppressed glutamine catabolism in melanoma cells by targeting glutaminase (GLS), the rate-limiting enzyme of glutamine catabolism. We also demonstrated that OIP5-AS1 acted as a sponge of miR-217 to upregulate GLS expression, thus promoting glutamine catabolism and melanoma growth. Overall, this result elucidates a new mechanism for OIP5-AS1 in metabolism in melanoma and provides a potential therapeutic target for patients with melanoma.
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Affiliation(s)
- Wenkang Luan
- Department of Plastic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - Xuanfeng Zhang
- Department of General Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - Hongru Ruan
- Department of Plastic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - Jinlong Wang
- Department of Plastic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - Xuefeng Bu
- Department of General Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
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Tang L, Wang Y, Wang H, Xu B, Ji H, Xu G, Ge X, Li Q, Miao L. Long noncoding-RNA component of mitochondrial RNA processing endoribonuclease is involved in the progression of cholangiocarcinoma by regulating microRNA-217. Cancer Sci 2019; 110:2166-2179. [PMID: 31111617 PMCID: PMC6609814 DOI: 10.1111/cas.14074] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 05/08/2019] [Accepted: 05/16/2019] [Indexed: 12/18/2022] Open
Abstract
Cholangiocarcinoma (CCA) is a malignant tumor originating from bile duct epithelium and its incidence is increasing year by year. In recent years, long noncoding RNAs (lncRNAs) have been found to play an important role in the occurrence and progression of malignant tumors. In the present study, for the first time, abnormal expression of lnc‐RNA component of mitochondrial RNA processing endoribonuclease (RMRP) and its possible role in CCA were found. We explored the effects of RMRP on various behaviors of CCA cells in vitro and in vivo. In addition, by second‐generation sequencing, we explored the microRNA expression profiles that RMRP may affect in the HCCC‐9810 cell line. We also validated and explored the role of microRNA‐217 (miR‐217) with high differential expression by in vitro experiments. Our findings indicated that RMRP can play a part in promoting cancer by regulating the expression of miR‐217. RMRP is involved in the progression of CCA and can be a novel indicator of poor prognosis in patients with CCA.
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Affiliation(s)
- Lingyu Tang
- Medical Centre for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Yuting Wang
- Medical Centre for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Huishan Wang
- Medical Centre for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Boming Xu
- Department of Gastroenterology, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, China
| | - Hao Ji
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Guolong Xu
- Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Xianxiu Ge
- Medical Centre for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Quanpeng Li
- Medical Centre for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China.,Department of Digestive Diseases Kizilsu Kirghiz, The People's Hospital of Kizilsu Kirghiz Autonomous Prefecture, Xinjiang, China
| | - Lin Miao
- Medical Centre for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
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Safaralizadeh R, Ajami N, Nemati M, Hosseinpourfeizi M, Azimzadeh Isfanjani A, Moaddab SY. Disregulation of miR-216a and miR-217 in Gastric Cancer and Their Clinical Significance. J Gastrointest Cancer 2019; 50:78-83. [PMID: 29177609 DOI: 10.1007/s12029-017-0019-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE The majority of gastric cancer (GC) diagnoses occur at the middle or late stage of the disease, indicating that finding novel biomarkers that could be detectable at earlier stage is urgently needed. Accumulating studies have shown that microRNAs, a class of tiny single-stranded RNAs, play important roles in multiple biological processes including cancer development. The present study aimed to evaluate the effect of miR-216a and miR-217 in GC. MATERIAL AND METHODS The real-time quantitative reverse-transcription PCR was exploited to identify and compare the expression levels of miR-216a and miR-217 in 37 pairs of samples of gastric cancer tissue and adjacent normal tissue. Superimposed on this, the potential relationship between miR-216a/217 levels and clinicopathological parameters in patients suffering GC was explored. RESULTS The results obtained from this study showed that the miR-216a is significantly upregulated in gastric cancer tissues, compared with adjacent normal tissues, but the altered expression of miR-217 was not significant. For miR-216a/217, no significant correlations were detected between expression levels of these miRNAs and clinical and pathological characteristics of patients. CONCLUSION This prospective study proposes that upregulation of miR-216a might represent an important mechanism for the development of gastric cancer.
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Affiliation(s)
- Reza Safaralizadeh
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Naser Ajami
- Department of Medical Genetics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Masoumeh Nemati
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran.
| | | | | | - Seyed-Yaghob Moaddab
- Liver and Gastroenterology Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Bian Y, Gao G, Zhang Q, Qian H, Yu L, Yao N, Qian J, Liu B, Qian X. KCNQ1OT1/ miR-217/ZEB1 feedback loop facilitates cell migration and epithelial-mesenchymal transition in colorectal cancer. Cancer Biol Ther 2019; 20:886-896. [PMID: 30794031 DOI: 10.1080/15384047.2019.1579959] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Long noncoding RNAs are widely acknowledged as a group of regulatory factors in various diseases, especially in cancers. KCNQ1 overlapping transcript 1 (KCNQ1OT1) has been reported as oncogene in human cancers. However, the role of KCNQ1OT1 in colorectal cancer (CRC) has not been fully explained. Based on the database analysis, KCNQ1OT1 was highly expressed in CRC samples and predicted the poor prognosis for CRC patients. Functional experiments revealed that KCNQ1OT1 knockdown negatively affected the proliferation, migration and epithelial-mesenchymal transition (EMT) in CRC cells. Moreover, we identified the cytoplasmic localization of KCNQ1OT1 in CRC cells, indicating the post-transcriptional regulation of KCNQ1OT1 on gene expression. Mechanism experiments including RNA Immunoprecipitation (RIP) assay and dual luciferase reporter assays verified that KCNQ1OT1 acted as a competing endogenous RNA (ceRNA) in CRC by sponging microRNA-217 (miR-217) to up-regulate the expression of zinc finger E-box binding homeobox 1 (ZEB1). Further mechanism investigation revealed that ZEB1 enhanced the transcription activity of KCNQ1OT1 by acting as a transcription activator. Finally, rescue assays were designed to demonstrate the effect of KCNQ1OT1-miR-217-ZEB1 feedback loop on proliferation, migration, and EMT of CRC cells. In brief, our research findings revealed that ZEB1-induced upregulation of KCNQ1OT1 improved the proliferation, migration and EMT formation of CRC cells via regulation of miR-217/ZEB1 axis.
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Affiliation(s)
- Yinzhu Bian
- a Comprehensive Cancer Center , Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University , Nanjing , China.,b Department of Oncology, First People's Hospital of Yancheng , Fourth Affiliated Hospital of Nantong University , Yancheng , China
| | - Guangyi Gao
- c Department of Traditional Chinese Medicine , The Affiliated Huai'an Hospital of Xuzhou Medical University and Huai'an Second People's Hospital , Huai'an , Jiangsu , China
| | - Qun Zhang
- d Comprehensive Cancer Center, Nanjing Drum Tower Hospital , Medical School of Nanjing University, Clinical Cancer Institute of Nanjing University , Nanjing , China
| | - Hanqing Qian
- d Comprehensive Cancer Center, Nanjing Drum Tower Hospital , Medical School of Nanjing University, Clinical Cancer Institute of Nanjing University , Nanjing , China
| | - Lixia Yu
- d Comprehensive Cancer Center, Nanjing Drum Tower Hospital , Medical School of Nanjing University, Clinical Cancer Institute of Nanjing University , Nanjing , China
| | - Ninghua Yao
- e Radiotherapy of oncology , The Affiliated hospital of Nantong University , Nantong , Jiangsu , China
| | - Jing Qian
- e Radiotherapy of oncology , The Affiliated hospital of Nantong University , Nantong , Jiangsu , China
| | - Baorui Liu
- d Comprehensive Cancer Center, Nanjing Drum Tower Hospital , Medical School of Nanjing University, Clinical Cancer Institute of Nanjing University , Nanjing , China
| | - Xiaoping Qian
- a Comprehensive Cancer Center , Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University , Nanjing , China.,d Comprehensive Cancer Center, Nanjing Drum Tower Hospital , Medical School of Nanjing University, Clinical Cancer Institute of Nanjing University , Nanjing , China
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Abstract
Background MicroRNA-217 (miR-217) has been demonstrated to participate in the tumorigenesis and progression of various types of cancers. Nevertheless, the role of miR-217 in cervical carcinoma still remains not fully elucidated. This current work sought to investigate the role of miR-217 in the growth, migration, and invasion of cervical carcinoma and detect the role of miR-217 in the chemosensitivity of cervical carcinoma cell to cisplatin. Materials and methods The levels of miR-217 in 65 pairs of cervical carcinoma tissues and matched normal tissues were detected using quantitative real-time-PCR assay. The roles of miR-217 on the growth, apoptosis, migration, and invasion of cervical cancer SiHa and Ca-Ski cells were analyzed using Cell Counting Kit-8, flow cytometry, wound healing, and Transwell invasion assays, respectively. The target of miR-217 was identified using the online analysis tool TargetScan (http://www.targetscan.org/vert_72/) and was verified by luciferase reporter and immunoblotting assays. The xenograft tumor model was constructed to explore the impact of miR-217 on the growth of cervical carcinoma cell in vivo. Results The level of miR-217 was remarkably lower in cervical carcinoma tissues than that in noncancerous tissues. Overregulation of miR-217 markedly suppressed the aggressiveness of cervical cancer cell and induced cell apoptosis through regulating V-Ki-Ras2 Kirsten rat sarcoma viral oncogene homolog (KRAS). Finally, upregulation of miR-217 enhanced the chemosensitivity of both SiHa and Ca-Ski cervical cancer cells toward cisplatin. Conclusion Altogether, upregulation of miR-217 inhibits the aggressiveness phenotypes of cervical carcinoma cell via regulating KRAS gene and increases the sensitivity of cervical cancer cell to cisplatin.
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Affiliation(s)
- Zhaojun Yin
- Gynaecology Ward of Maternal and Child Health Hospital, Shizhong District, Zaozhuang 277100, Shandong, People's Republic of China,
| | - Weiru Ren
- Gynaecology Ward of Maternal and Child Health Hospital, Shizhong District, Zaozhuang 277100, Shandong, People's Republic of China,
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Jin LW, Pan M, Ye HY, Zheng Y, Chen Y, Huang WW, Xu XY, Zheng SB. Down-regulation of the long non-coding RNA XIST ameliorates podocyte apoptosis in membranous nephropathy via the miR-217-TLR4 pathway. Exp Physiol 2018; 104:220-230. [PMID: 30414341 DOI: 10.1113/ep087190] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 11/08/2018] [Indexed: 12/18/2022]
Abstract
NEW FINDINGS What is the central question of this study? What is the role of the long non-coding RNA X-inactive specific transcript (XIST), which is up-regulated in injured podocytes and membranous nephropathy, in the pathogenesis of membranous nephropathy? What is the main finding and its importance? XIST was up-regulated in kidney tissue with membranous nephropathy and in injured podocytes. Down-regulation of XIST inhibited podocyte apoptosis. XIST negatively regulated miR-217, and miR-217 modulated Toll-like receptor 4. Inhibition of XIST suppressed podocyte apoptosis induced by angiotensin II via miR-217. ABSTRACT Membranous nephropathy is often characterized by glomerular podocyte injury. Up-regulation of the long non-coding RNA (lncRNA) X-inactive specific transcript (XIST) has been verified in membranous nephropathy and in injured podocytes. Here the role of XIST in podocyte injury and membranous nephropathy was explored. Quantitative real-time PCR and western blot were performed to detect the expression of XIST and miR-217, and Toll-like receptor 4 (TLR4) protein, respectively. Podocyte apoptosis was evaluated with flow cytometry. Interaction between XIST and miR-217 was analysed by RNA immunoprecipitation and RNA pull-down assay. A dual luciferase reporter assay was used to examine the interplay between miR-217 and TLR4. Up-regulation of the lncRNA XIST and angiotensin II (Ang II) and kidney and podocyte injury were indicated in kidney tissue of patients with membranous nephropathy. Increase of XIST and apoptosis were induced by Ang II in podocytes. Down-regulation of XIST reversed podocyte apoptosis induced by Ang II. MiR-217 was negatively regulated by XIST. MiR-217 controlled TLR4 by targeting its 3'-untranslated region. XIST modulated TLR4 through miR-217 and inhibition of XIST reduced podocyte apoptosis induced by Ang II via regulating miR-217. Down-regulation of XIST ameliorates podocyte apoptosis via the miR-217-TLR4 pathway, which may improve membranous nephropathy.
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Affiliation(s)
- Ling-Wei Jin
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Min Pan
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Han-Yang Ye
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yu Zheng
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yan Chen
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Wen-Wen Huang
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Xiao-Yan Xu
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Shu-Bei Zheng
- Department of Nephrology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
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Gao Y, Wang B, Luo H, Zhang Q, Xu M. miR-217 represses TGF-β1-induced airway smooth muscle cell proliferation and migration through targeting ZEB1. Biomed Pharmacother 2018; 108:27-35. [PMID: 30212709 DOI: 10.1016/j.biopha.2018.09.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 09/05/2018] [Accepted: 09/05/2018] [Indexed: 02/08/2023] Open
Abstract
Aberrant proliferation and migration of airway smooth muscle cells (ASMCs) contribute to the pathogenesis of airway remodeling during asthma development. Here, the potential function of microRNA-217 (miR-217) on the cell proliferation and migration of TGF-β1-induced ASMCs and the involved mechanisms were investigated in this study. We found that miR-217 expression was apparently downregulated in a time and dose dependent characteristic in ASMCs exposed to transforming growth factor-β (TGF-β1) stimulation. Overexpression of miR-217 significantly inhibited TGF-β1-induced proliferation, migration, extracellular matrix (ECM) deposition, but promoted apoptosis in ASMCs, whereas, miR-217 inhibitor showed an opposed effect. Bioinformatics analyses revealed that the 3'-untranslated region (UTR) of ZEB1 was a potential target for miR-217, which was further confirmed by luciferase activity, qRT-PCR and western blot assay. In addition, rescue experiment also displayed that restoration of ZEB1 expression partially abrogated the inhibitory effect of miR-217 on TGF-β1-induced proliferation and migration in ASMCs. By chromatin immunoprecipitation (ChIP) assay, we further confirmed that the binding of ZEB1 to the fibronectin promoter in TGF-β1-treated ASMCs was reduced by miR-217 overexpression. Therefore, our findings suggested the potential protective role of miR-217 on the attenuation of cell proliferation and migration was through targeting ZEB1 in TGF-β1-stimulated ASMCs.
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Affiliation(s)
- Ying Gao
- Otolaryngology Department, The Second Affiliated Hospital of Xi'an Jiaotong University, 710004, Shaanxi, China
| | - Botao Wang
- Otolaryngology Department, The Second Affiliated Hospital of Xi'an Jiaotong University, 710004, Shaanxi, China
| | - Huanan Luo
- Otolaryngology Department, The Second Affiliated Hospital of Xi'an Jiaotong University, 710004, Shaanxi, China
| | - Qing Zhang
- Otolaryngology Department, The Second Affiliated Hospital of Xi'an Jiaotong University, 710004, Shaanxi, China
| | - Min Xu
- Otolaryngology Department, The Second Affiliated Hospital of Xi'an Jiaotong University, 710004, Shaanxi, China.
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Wang B, Qu XL, Liu J, Lu J, Zhou ZY. HOTAIR promotes osteosarcoma development by sponging miR-217 and targeting ZEB1. J Cell Physiol 2018; 234:6173-6181. [PMID: 30367466 DOI: 10.1002/jcp.27394] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 08/16/2018] [Indexed: 12/23/2022]
Abstract
Long noncoding RNAs (lncRNAs) have drawn increasing attention because of the role which they play in various diseases, including osteosarcoma. So far, the function and mechanism of HOTAIR in osteosarcoma are unclear. In our study, we observed that HOTAIR was elevated accompanied with a decrease of miR-217 and an increase of ZEB1 in human osteosarcoma cells including U2OS, MG63, Saos-2, and SW1353 compared with human osteoblast cell line hFOB. In addition, the subsequent functional assay exhibited that silencing HOTAIR could significantly repress osteosarcoma cell growth, migration, invasion, and induce cell apoptosis capacity, which indicated that HOTAIR exerted an oncogenic role in osteosarcoma. Moreover, it was revealed by using bioinformatics analysis that HOTAIR can be targeted by microRNA-217 (miR-217). miR-217 has been recognized as a crucial tumor suppressive gene in cancers. We verified that mimics of miR-217 were able to suppress the osteosarcoma development. Furthermore, real-time quantitative PCR showed that HOTAIR siRNA increased miR-217 expression. Besides these, ZEB1 was identified as a downstream gene of miR-217 and we found that HOTAIR can mediate osteosarcoma progress by upregulating ZEB1 expression via acting as a competitive endogenous RNA (ceRNA) via miR-217. Taken these together, our findings in this study indicated that HOTAIR/miR-217/ZEB1 axis, as a novel research point can provide new insights into molecular mechanism of osteosarcoma development.
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Affiliation(s)
- Bing Wang
- Department of Oncological Surgery, Minhang Branch, Cancer Hospital, Fudan University, Shanghai, China
| | - Xing-Long Qu
- Department of Oncological Surgery, Minhang Branch, Cancer Hospital, Fudan University, Shanghai, China
| | - Jiaxiang Liu
- Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Junhui Lu
- Department of Rheumatology, Huai'an Second People's Hospital and The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, China
| | - Zong-Yu Zhou
- Department of Orthopedics, Huaiyin Hospital of Huai'an City, Huai'an, China
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Huang W, Lu Y, Wang F, Huang X, Yu Z. Downregulation of circular RNA hsa_circ_0000144 inhibits bladder cancer progression via stimulating miR-217 and suppressing RUNX2 expression. Gene 2018; 678:337-342. [PMID: 30098434 DOI: 10.1016/j.gene.2018.08.036] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/08/2018] [Accepted: 08/07/2018] [Indexed: 01/11/2023]
Abstract
Although increasing aberrantly expressed circular RNAs (circRNAs) have been identified among many human cancer tissues, their roles in tumor progression still remain largely unknown. In bladder cancer, the function of hsa_circ_0000144 has not been reported. In our study, we found hsa_circ_0000144 as a novel oncogene in bladder cancer by bioinformatics analysis. We found that hsa_circ_0000144 expression was significantly upregulated in bladder cancer tissues compared with adjacent normal tissues, and its high expression was related with poor prognosis. Additionally, knockdown of hsa_circ_0000144 remarkably suppressed the proliferation and invasion of bladder cancer cells in vitro. Hsa_circ_0000144 silence also led to reduced tumor volumes in vivo. In mechanism, we found that hsa_circ_0000144 was a sponge of miR-217 while miR-217 targeted RUNX2. Our results indicated that the expression of miR-217 was inversely correlated with that of both hsa_circ_0000144 and RUNX2 in bladder cancer tissues. Rescue assays showed that either inhibition of miR-217 or restoration of RUNX2 reversed the suppressive effects of hsa_circ_0000144 knockdown on bladder cancer cell proliferation and invasion. Taken together, these findings demonstrated that hsa_circ_0000144 exerts oncogenic roles in bladder cancer via repressing miR-217 to facilitate RUNX2 expression.
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Affiliation(s)
- Weiping Huang
- Department of Urinary Surgery, The First Affiliated Hospital of Wenzhou Medical University, 325000 Wenzhou, China
| | - Yongyong Lu
- Department of Urinary Surgery, The First Affiliated Hospital of Wenzhou Medical University, 325000 Wenzhou, China
| | - Feng Wang
- Department of Urinary Surgery, The First Affiliated Hospital of Wenzhou Medical University, 325000 Wenzhou, China
| | - Xixi Huang
- Department of Urinary Surgery, The First Affiliated Hospital of Wenzhou Medical University, 325000 Wenzhou, China
| | - Zhixian Yu
- Department of Urinary Surgery, The First Affiliated Hospital of Wenzhou Medical University, 325000 Wenzhou, China.
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Liu AN, Qu HJ, Yu CY, Sun P. Knockdown of LINC01614 inhibits lung adenocarcinoma cell progression by up-regulating miR-217 and down-regulating FOXP1. J Cell Mol Med 2018; 22:4034-4044. [PMID: 29934982 PMCID: PMC6111824 DOI: 10.1111/jcmm.13483] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 10/31/2017] [Indexed: 02/06/2023] Open
Abstract
We tried to identify the function of LINC01614 in lung adenocarcinoma (LUAD) and reveal its underlying mechanisms. qRT‐PCR was applied to assess the expression of LINC016014 in LUAD tissues, noncancerous tissues and cells. Through colony formation assay, MTT assay and apoptosis analysis, we examined the variation of cell proliferation and apoptosis ability after silencing LINC01614. Moreover, the targeting interactions among LINC01614, miR‐217 and FOXP1 were validated via luciferase reporter assay, and then, we regulated the expression of miR‐217 and FOXP1 to ascertain their importance in cell proliferation and apoptosis. LINC01614 and FOXP1 were found to be up‐regulated in LUAD tumours and cells, whereas miR‐217 was down‐regulated. The experiment showed that target‐specific selectivity exists between LINC01614‐miR‐217 and miR‐217‐FOXP1 3′UTR. Furthermore, we disclosed that inhibition of LINC01614 could activate miR‐217, which subsequently restrained FOXP1. It was proved that LINC01614 promoted FOXP1 by inhibiting miR‐217, which ultimately stimulated the development of LUAD.
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Affiliation(s)
- Ai-Na Liu
- Department of Medical Oncology, the Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, Shandong, China
| | - Hua-Jun Qu
- Department of Medical Oncology, the Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, Shandong, China
| | - Cai-Yan Yu
- Department of Medical Oncology, the Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, Shandong, China
| | - Ping Sun
- Department of Medical Oncology, the Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College, Yantai, Shandong, China
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