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Ozuynuk-Ertugrul AS, Ekici B, Erkan AF, Coban N. Alteration of circulating miRNAs during myocardial infarction and association with lipid levels. Lab Med 2024; 55:361-372. [PMID: 38048807 PMCID: PMC11064099 DOI: 10.1093/labmed/lmad094] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023] Open
Abstract
BACKGROUND Increasing mortality and morbidity of coronary artery disease (CAD) highlight the emerging need for novel noninvasive markers such as circulating microRNAs (miRNAs). OBJECTIVE To evaluate the circulating levels of miR-126-3p, miR-210-3p, let-7g-5p, and miR-326, and their associations with known contributors to CAD, in CAD subgroups. METHODS We divided the cohort into 4 groups: non-CAD controls (≤30% stenosis; n = 55), and patients with stable angina pectoris (SAP; n = 48), unstable AP (UAP; n = 46), and myocardial infarction (MI; n = 36). The circulating levels of miR-126-3p, miR-210-3p, let-7g-5p, and miR-326 were determined using TaqMan Advanced miRNA Assays in serum specimens. RESULTS Circulating miR-126-3p levels were lower in the MI and UAP groups, compared with the non-CAD group, whereas miR-210-3p circulating levels were lower in the MI group than others. The levels of circulating let-7g-5p were shown to be useful for distinguishing UAP from MI, and there were substantial differences in circulating let-7g-5p levels between the UAP and MI groups. Moreover, lipid levels and ratios were lower in individuals with high circulating miR-126-3p and miR-210-3p levels. CONCLUSIONS The study results suggest that circulating miR-126-3p, miR-210-3p, and let-7g-5p are differentiated between different clinical presentations of CAD and associated with lipid levels, which are important risk factors and determinants of CAD.
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Affiliation(s)
- Aybike Sena Ozuynuk-Ertugrul
- Department of Genetics, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
- Institute of Graduate Studies in Health Sciences, Istanbul University, Istanbul, Turkey
| | - Berkay Ekici
- Department of Cardiology, Faculty of Medicine, Ufuk University, Ankara, Turkey
| | - Aycan Fahri Erkan
- Department of Cardiology, Faculty of Medicine, Ufuk University, Ankara, Turkey
| | - Neslihan Coban
- Department of Genetics, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
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Abstract
Cholangiocarcinoma (CHOL) is often diagnosed at an advanced stage; therefore, exploring its key regulatory factors is important for earlier diagnosis and treatment. This study aimed to identify the mechanisms of long non-coding RNA (lncRNA) TMPO Antisense RNA 1 (TMPO-AS1), microRNA let-7 g-5p, and high-mobility group A1 (HMGA1) proteins in CHOL. Our results, through quantitative real-time PCR and Western blot detection, showed that TMPO-AS1 and HMGA1 were overexpressed while let-7 g-5p was underexpressed in CHOL. Cell function experiments in CHOL cells revealed that TMPO-AS1 knockdown inhibited cell proliferation, colony formation, and cell migration, but induced apoptosis. TMPO-AS1 knockdown also suppressed tumor growth in vivo. Together with luciferase assay and Western blotting, we found that TMPO-AS1 could sponge let-7 g-5p to promote HMGA1 expression. Moreover, HMGA1 overexpression attenuated the effect of TMPO-AS1 downregulation in CHOL cells. Overall, our findings identified the oncogenic effect of TMPO-AS1 on CHOL cells, which may put forward a novel methodology for CHOL diagnosis and therapy.
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Affiliation(s)
- Hongbin Chang
- Department of General Surgery, Hanyang Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China.,Department of General Surgery, Wuhan Hanyang Hospital, Wuhan, China
| | - Yixin Yao
- Department of General Surgery, Hanyang Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China.,Department of General Surgery, Wuhan Hanyang Hospital, Wuhan, China
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Chen J, Zhao H, Huang Y, Li Y, Fan J, Wang R, Han Z, Yang Z, Wu L, Wu D, Luo Y, Ji X. Dysregulation of Principal Circulating miRNAs in Non-human Primates Following Ischemic Stroke. Front Neurosci 2021; 15:738576. [PMID: 34539341 PMCID: PMC8441133 DOI: 10.3389/fnins.2021.738576] [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: 07/09/2021] [Accepted: 08/13/2021] [Indexed: 11/13/2022] Open
Abstract
Despite the recent interest in plasma microRNA (miRNA) biomarkers in acute ischemic stroke patients, there is limited knowledge about the miRNAs directly related to stroke itself due to the multiple complications in patients, which has hindered the research progress of biomarkers and therapeutic targets of ischemic stroke. Therefore, in this study, we compared the differentially expressed miRNA profiles in the plasma of three rhesus monkeys pre- and post-cerebral ischemia. After cerebral ischemia, Rfam sequence category revealed increased ribosomic RNA (rRNA) and decreased transfer RNAs (tRNAs) in plasma. Of the 2049 miRNAs detected after cerebral ischemia, 36 were upregulated, and 76 were downregulated (fold change ≥2.0, P < 0.05). For example, mml-miR-191-5p, miR-421, miR-409-5p, and let-7g-5p were found to be significantly overexpressed, whereas mml-miR-128a-5p_R − 2, miR-431_R − 1, and let-7g-3p_1ss22CT were significantly downregulated. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses revealed that these differentially expressed miRNAs were implicated in the regulation of ubiquitin-mediated proteolysis and signaling pathways in cancer, glioma, chronic myeloid leukemia, and chemokine signaling. miRNA clustering analysis showed that mml-let-7g-5p and let-7g-3p_1ss22CT, which share three target genes [RB1-inducible coiled-coil 1 (RB1CC1), G-protein subunit γ 5 (GNG5), and chemokine (C-X-C motif) receptor 4 (CXCR4)], belong to one cluster, were altered in opposite directions following ischemia. These data suggest that circulating mml-let-7g may serve as a therapeutic target for ischemic stroke.
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Affiliation(s)
- Jian Chen
- Department of Neurosurgery, Institute of Cerebrovascular Diseases Research, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Haiping Zhao
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Yuyou Huang
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Yuqian Li
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Junfen Fan
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Rongliang Wang
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Ziping Han
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Zhenhong Yang
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Longfei Wu
- Department of Neurosurgery, Institute of Cerebrovascular Diseases Research, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Di Wu
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| | - Yumin Luo
- Beijing Institute for Brain Disorders, Beijing, China
| | - Xunming Ji
- Beijing Institute for Brain Disorders, Beijing, China
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Bi CL, Liu JF, Zhang MY, Lan S, Yang ZY, Fang JS. LncRNA NEAT1 promotes malignant phenotypes and TMZ resistance in glioblastoma stem cells by regulating let-7g-5p/MAP3K1 axis. Biosci Rep 2020; 40:BSR20201111. [PMID: 33057597 DOI: 10.1042/BSR20201111] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 04/08/2020] [Revised: 09/16/2020] [Accepted: 10/07/2020] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma multiforme (GBM) is one of the most malign brain tumors in adults. Temozolomide (TMZ) is an oral chemotherapy drug constituting the backbone of chemotherapy regimens utilized as first-line treatment of GBM. However, resistance to TMZ often leads to treatment failure. In the present study, we explored the expression and related mechanisms of nuclear enriched abundant transcript 1 (NEAT1) in glioma stem cells (GSCs). Quantitative real-time PCR (qRT-PCR) showed that NEAT1 was up-regulated in serum samples of GBM patients and GSCs isolated from U87, U251 cell lines. Functional experiments showed that NEAT1 knockdown restrained malignant behaviors of GSC, including proliferation, migration and invasion. Dual-luciferase assays identified let-7g-5p was a downstream target and negatively adjusted by NEAT1. Restoration of let-7g-5p impeded tumor progression by inhibiting proliferation, migration and invasion. Mitogen-activated protein kinase kinase kinase 1 (MAP3K1), as a direct target of let-7g-5p, was positively regulated by NEAT1 and involved to affect the regulation of NEAT1 on GSCs' behaviors. In conclusion, our results suggested that NEAT1 promoted GSCs progression via NEAT1/let-7g-5p/MAP3K1 axis, which provided a depth insight into TMZ resistance mechanism.
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Jia WQ, Zhu JW, Yang CY, Ma J, Pu TY, Han GQ, Zou MM, Xu RX. Verbascoside inhibits progression of glioblastoma cells by promoting Let-7g-5p and down-regulating HMGA2 via Wnt/beta-catenin signalling blockade. J Cell Mol Med 2020; 24:2901-2916. [PMID: 32000296 PMCID: PMC7077555 DOI: 10.1111/jcmm.14884] [Citation(s) in RCA: 16] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 11/01/2019] [Accepted: 11/23/2019] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma (GBM) continues to show a poor prognosis despite advances in diagnostic and therapeutic approaches. The discovery of reliable prognostic indicators may significantly improve treatment outcome of GBM. In this study, we aimed to explore the function of verbascoside (VB) in GBM and its effects on GBM cell biological processes via let‐7g‐5p and HMGA2. Differentially expressed GBM‐related microRNAs (miRNAs) were initially screened. Different concentrations of VB were applied to U87 and U251 GBM cells, and 50 µmol/L of VB was selected for subsequent experiments. Cells were transfected with let‐7g‐5p inhibitor or mimic, and overexpression of HMGA2 or siRNA against HMGA2 was induced, followed by treatment with VB. The regulatory relationships between VB, let‐7g‐5p, HMGA2 and Wnt/β‐catenin signalling pathway were determined. The results showed that HMGA2 was a direct target gene of let‐7g‐5p. VB treatment or let‐7g‐5p overexpression inhibited HMGA2 expression and the activation of Wnt/β‐catenin signalling pathway, which further inhibited cell viability, invasion, migration, tumour growth and promoted GBM cell apoptosis and autophagy. On the contrary, HMGA2 overexpression promoted cell viability, invasion, migration, tumour growth while inhibiting GBM cell apoptosis and autophagy. We demonstrated that VB inhibits cell viability and promotes cell autophagy in GBM cells by up‐regulating let‐7g‐5p and down‐regulating HMGA2 via Wnt/β‐catenin signalling blockade.
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Affiliation(s)
- Wei-Qiang Jia
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Jian-Wei Zhu
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Cheng-Yong Yang
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Jun Ma
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Tian-You Pu
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Guo-Qiang Han
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Ming-Ming Zou
- Department of Neurosurgery, The Seventh Medical Center of PLA General Hospital, Beijing, China
| | - Ru-Xiang Xu
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
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Tan H, Zhao C, Zhu Q, Katakura Y, Tanaka H, Ohnuki K, Shimizu K. Ursolic Acid Isolated from the Leaves of Loquat ( Eriobotrya japonica) Inhibited Osteoclast Differentiation through Targeting Exportin 5. J Agric Food Chem 2019; 67:3333-3340. [PMID: 30827108 DOI: 10.1021/acs.jafc.8b06954] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
One of the conventional strategies for treating osteoporosis is to eliminate the multinucleated osteoclasts that are responsible for bone resorption. Our previous study revealed that ursolic acid, isolated from leaves of loquat that is used as tasty tea in Japan, suppressed osteoclastogenesis. We confirmed that ursolic acid exhibited osteoclast differentiation inhibitory activity with an 50% inhibitory concentration (IC50) value of 5.4 ± 0.96 μM. To disclose its mechanism of action, this study first uses polymer-coated magnetic nanobeads to identify potential target proteins. As a result, we identified a nuclear exporter protein named exportin 5 (XPO5). Further studies demonstrated that knockdown of XPO5 significantly blocks osteoclast differentiation ( P < 0.01). Expression profiling of mature microRNAs in the cells revealed that downregulation of XPO5 by small interfering RNA or by ursolic acid could downregulate the expression of mature microRNA let-7g-5p during osteoclast differentiation ( P < 0.01). Collectively, our findings suggest that ursolic acid inhibits osteoclast differentiation through targeting XPO5, which provides further evidence for the healthy function of the tea. This study also provides new insights into the role of XPO5 and its mediated microRNAs in treatment for bone resorption diseases.
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Affiliation(s)
- Hui Tan
- Faculty of Health Science , Hokkaido University , Sapporo 060-0812 , Japan
| | - Chong Zhao
- College of Food Science and Nutritional Engineering , China Agriculture University , Beijing 100083 , China
| | - Qinchang Zhu
- School of Pharmaceutical Sciences , Shenzhen University Health Science Center , Shenzhen 518060 , China
| | - Yoshinori Katakura
- Department of Genetic Resources Technology, Faculty of Agriculture , Kyushu University , Fukuoka 812-8581 , Japan
| | - Hiroyuki Tanaka
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences , Kyushu University , Fukuoka , 812-8582 , Japan
| | - Koichiro Ohnuki
- Department of Biological and Environmental Chemistry , Kinki University , Fukuoka 820-8555 , Japan
| | - Kuniyoshi Shimizu
- Department of Agro-environmental Sciences, Faculty of Agriculture , Kyushu University , Fukuoka 819-0395 , Japan
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