1
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Jakoube P, Cutano V, González-Morena JM, Keckesova Z. Mitochondrial Tumor Suppressors-The Energetic Enemies of Tumor Progression. Cancer Res 2021; 81:4652-4667. [PMID: 34183354 PMCID: PMC9397617 DOI: 10.1158/0008-5472.can-21-0518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 06/09/2021] [Accepted: 06/24/2021] [Indexed: 01/07/2023]
Abstract
Tumor suppressors represent a critical line of defense against tumorigenesis. Their mechanisms of action and the pathways they are involved in provide important insights into cancer progression, vulnerabilities, and treatment options. Although nuclear and cytosolic tumor suppressors have been extensively investigated, relatively little is known about tumor suppressors localized within the mitochondria. However, recent research has begun to uncover the roles of these important proteins in suppressing tumorigenesis. Here, we review this newly developing field and summarize available information on mitochondrial tumor suppressors.
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Affiliation(s)
- Pavel Jakoube
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic.,Department of Cell Biology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Valentina Cutano
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Juan M. González-Morena
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Zuzana Keckesova
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic.,Corresponding Author: Zuzana Keckesova, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Namesti 2, Prague 16000, Czech Republic. Phone: 420-2201-83584; E-mail:
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2
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Sharma B, Randhawa V, Vaiphei K, Gupta V, Dahiya D, Agnihotri N. Expression of miR-18a-5p, miR-144-3p, and miR-663b in colorectal cancer and their association with cholesterol homeostasis. J Steroid Biochem Mol Biol 2021; 208:105822. [PMID: 33465419 DOI: 10.1016/j.jsbmb.2021.105822] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/29/2020] [Accepted: 01/06/2021] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Though cholesterol accumulation is an established hallmark of a tumor cell, the relationship between the two is still not clear. Previously, we identified 3-Hydroxy-3-Methylglutaryl-CoA Reductase (HMGCR), Sterol Regulatory Element BindingTranscription Factor 2 (SREBF2), Nuclear Receptor Subfamily 1 Group H Member 3 (NR1H3), and Nuclear Receptor Subfamily 1 Group H Member 2 (NR1H2) as the key cholesterol homeostasis genes involved in colorectal cancer (CRC). In the present study, we aimed to identify microRNAs regulating these key genes in CRC. METHODS miR-18a-5p, miR-144-3p, and miR-663b were selected as the miRNAs targeting NR1H2, HMGCR, and SREBF2, respectively, based on the bioinformatic prediction tools and literature review. Their expression was evaluated in the local and The Cancer Genome Atlas (TCGA) cohorts. Receiver Operating Characteristic Curves and Kaplan Meier analysis were performed to elucidate their diagnostic and prognostic potential. Pearson or Spearman's correlations were used to evaluate the relationship between miRNAs and their target genes. Protein-protein interaction networks and Gene Ontology analyses were performed to investigate the potential molecular mechanism of these miRNAs. RESULTS Deregulated expression of miR-18a-5p, miR-144-3p, and miR-663b was associated with various clinicopathological features. miR-18a-5p exhibited an inverse correlation with NR1H2. miR-18a-5p and miR-144-3p also had a significant direct correlation with miR-33a-5p, an important modulator of cholesterol homeostasis. These miRNAs also exhibited high centrality in the mirna-protein interaction network. miR-144-3p and miR-663b exhibited the potential to be used as diagnostic biomarkers. CONCLUSIONS miR-18a-5p and miR-144-3p exhibited the potential to modulate cholesterol homeostasis in CRC. miR-663b is an interesting candidate in CRC pathophysiology.
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Affiliation(s)
- Bhoomika Sharma
- Department of Biochemistry, Panjab University, Sector-25, Chandigarh, 160014, India.
| | - Vinay Randhawa
- Department of Biochemistry, Panjab University, Sector-25, Chandigarh, 160014, India.
| | - Kim Vaiphei
- Department of Histopathology, Post Graduate Institute of Medical Education & Research, Sector 12, Chandigarh, 160012, India.
| | - Vikas Gupta
- Department of General Surgery, Post Graduate Institute of Medical Education & Research (PGIMER), Sector 12, Chandigarh, 160012, India.
| | - Divya Dahiya
- Department of General Surgery, Post Graduate Institute of Medical Education & Research (PGIMER), Sector 12, Chandigarh, 160012, India.
| | - Navneet Agnihotri
- Department of Biochemistry, Panjab University, Sector-25, Chandigarh, 160014, India.
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3
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Yi S, Liu YP, Li XY, Yuan XY, Wang Y, Cai Y, Lei YD, Huang L, Zhang ZH. The expression profile and bioinformatics analysis of microRNAs in human bronchial epithelial cells treated by beryllium sulfate. J Appl Toxicol 2020; 41:1275-1285. [PMID: 33197057 DOI: 10.1002/jat.4116] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/17/2020] [Accepted: 11/02/2020] [Indexed: 11/08/2022]
Abstract
Beryllium and its compounds are systemic toxicants that mainly accumulate in the lungs. As a regulator of gene expression, microRNAs (miRNAs) were involved in some lung diseases. This study aimed to analyze the levels of some inflammatory cytokine and the differential expressions of miRNAs in human bronchial epithelial cells (16HBE) induced by beryllium sulfate (BeSO4 ) and to further explore the biological functions of differentially expressed miRNAs. The profile of miRNAs in 16HBE cells was detected using the high-throughput sequencing between the control groups (n = 3) and the 150 μmol/L of BeSO4 -treated groups (n = 3). Bioinformatics analysis of differentially expressed miRNAs was performed, including the prediction of target genes, Gene Ontology (GO) analysis, and the Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. Quantitative real-time polymerase chain reaction (qRT-PCR) was applied to verify some damage-related miRNAs. We found that BeSO4 can increase the levels of some inflammatory cytokine such as interleukin-10 (IL-10), tumor necrosis factor-alpha (TNF-α), interferon-γ (IFN-γ), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2). And BeSO4 altered miRNAs expression of 16HBE cells and a total of 179 differentially expressed miRNAs were identified, including 88 upregulated miRNAs and 91 downregulated miRNAs. The target genes predicted by 28 dysregulated miRNAs were mainly involved in the transcription regulation, signal transduction, MAPK, and VEGF signaling pathway. The qRT-PCR verification results were consistent with the sequencing results. miRNA expression profiling in 16HBE cells exposed to BeSO4 provides new insights into the toxicity mechanism of beryllium exposure.
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Affiliation(s)
- Shan Yi
- School of Public Health, University of South China, Hengyang, China
| | - Yan-Ping Liu
- School of Public Health, University of South China, Hengyang, China
| | - Xun-Ya Li
- School of Public Health, University of South China, Hengyang, China
| | - Xiao-Yan Yuan
- School of Public Health, University of South China, Hengyang, China
| | - Ye Wang
- School of Public Health, University of South China, Hengyang, China
| | - Ying Cai
- School of Public Health, University of South China, Hengyang, China
| | - Yuan-di Lei
- School of Public Health, University of South China, Hengyang, China
| | - Lian Huang
- School of Public Health, University of South China, Hengyang, China
| | - Zhao-Hui Zhang
- School of Public Health, University of South China, Hengyang, China
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Jiao Y, Yuan C, Wu H, Li X, Yu J. Oncogenic microRNA-765 promotes the growth and metastasis of breast carcinoma by directly targeting ING4. J Cell Biochem 2020; 121:3887-3900. [PMID: 31724215 DOI: 10.1002/jcb.29545] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 10/08/2019] [Indexed: 01/24/2023]
Abstract
Previous investigations have proved that microRNA (miR)-765 is significantly overexpressed in multiple tumor types. Nevertheless, the underlying molecular mechanism of miR-765 in mediating breast carcinoma cell growth and metastasis remains unclear. Quantitative real-time polymerase chain reaction was used to determine the levels of miR-765 and inhibitor of growth 4 (ING4) in breast carcinoma tissues and breast carcinoma cells. Cell proliferation, colony formation, wound healing, and Transwell invasion assays were used to analysis the role of miR-765 on breast carcinoma cell growth and aggressiveness. The expressions of ING4 were determined using Western blot analysis and immunohistochemical staining. The direct target of ING4 and miR-765 was confirmed using the luciferase reporter assay. Nude mice were subcutaneously implanted with miR-765 inhibitor transfected MDA-MB-231 cells to determine the potential role of miR-765 in tumor growth in vivo. We observed that miR-765 is overexpressed in breast carcinoma tissue and breast cancer cells. By using luciferase reporter gene bioassay, we find that ING4 is the direct target of miR-765 in breast carcinoma. The level of ING4 is inversely associated with the level of miR-765. The gain-of-function and loss-of-function experiments in vitro indicate that the downregulation of miR-765 suppresses the growth, mobility, and invasion abilities of breast cancer cells by inhibiting ING4. In addition, overexpression of ING4 suppresses the aggressiveness of the MDA-BA-231 cell that is induced by miR-761 in vitro. In this study, we prove that miR-765 regulates the growth and metastasis of breast cancer via modulating miR-765-ING4-negative feedback loop.
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Affiliation(s)
- Yanyan Jiao
- Department of oncology, Chengyang people's Hospital, Qingdao, Shandong, China
| | - Cailing Yuan
- Department of Radiotherapy, Chengyang people's Hospital, Qingdao, Shandong, China
| | - Hongxia Wu
- Department of oncology, Chengyang people's Hospital, Qingdao, Shandong, China
| | - Xiaomei Li
- Department of oncology, Chengyang people's Hospital, Qingdao, Shandong, China
| | - Junhua Yu
- Department of Thyroid Breast Surgery, Chengyang people's Hospital, Qingdao, Shandong, China
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Yu F, Zhang X, Sun C, Xu W, Xia J. Downregulation of miRNA-663b protects against hypoxia-induced injury in cardiomyocytes by targeting BCL2L1. Exp Ther Med 2020; 19:3581-3588. [PMID: 32346421 PMCID: PMC7185160 DOI: 10.3892/etm.2020.8644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 03/17/2020] [Indexed: 02/06/2023] Open
Abstract
In the present study, the role of microRNA-663b (miR-663b) in cardiomyocyte injury was examined. Reverse transcription-quantitative PCR (RT-qPCR) was performed to detect miR-663b expression in hypoxia-induced H9c2 cells. The results revealed that miR-663b expression was significantly upregulated in hypoxia-induced H9c2 cells compared with control cells. TargetScan analysis and dual-luciferase reporter assays demonstrated that miR-663b directly targeted the B-cell lymphoma 2 like 1 (BCL2L1) gene. RT-qPCR and western blotting data indicated that BCL2L1 expression was significantly downregulated in hypoxia-induced H9c2 cells compared with control cells. Under hypoxic conditions, H9c2 cells were transfected with miR-663b inhibitor, inhibitor control, miR-663b inhibitor + control small interfering (si)RNA or miR-663b inhibitor + BCL2L1-siRNA for 48 h. ELISA against creatine kinase-muscle/brain (CK-MB) and cardiac troponin 1 (cTnI) demonstrated that the miR-663b inhibitor reduced CK-MD and cTnI release and increased mitochondrial viability when compared with hypoxia-treated cells. Additionally, the miR-663b inhibitor significantly increased H9c2 cell viability and decreased cell apoptosis under hypoxic conditions. The results of ELISA further revealed that the miR-663b inhibitor decreased the release of various inflammatory factors, including tumour necrosis factor α, interleukin (IL) 1β and IL-6 in H9c2 cells under hypoxic conditions. These changes were reversed following BCL2L1 knockdown. In conclusion, miR-663b inhibition protected cardiomyocytes against hypoxia-induced injury by targeting BCL2L1 and may potentially be a novel target for the treatment of patients with myocardial infarction.
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Affiliation(s)
- Fei Yu
- Cardiovascular Department, Internal Medicine Department, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
| | - Xuesong Zhang
- Central Laboratory, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
| | - Caiqin Sun
- Cardiovascular Department, Internal Medicine Department, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
| | - Weiyi Xu
- Operating Room, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
| | - Junyang Xia
- Hospital Office Department, Jingjiang People's Hospital, Jingjiang, Jiangsu 214500, P.R. China
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Xiao F, Chen W, Yu C, Zhao G. MicroRNA-663b enhances migration and invasion by targeting adenomatous polyposis coli 2 in colorectal carcinoma cells. Oncol Lett 2020; 19:3701-3710. [PMID: 32382323 PMCID: PMC7202279 DOI: 10.3892/ol.2020.11482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 12/12/2019] [Indexed: 12/16/2022] Open
Abstract
Colorectal carcinoma (CRC) is one of the leading causes of cancer-associated mortality worldwide. Dysregulation of microRNA (miR)-663b has been reported in a variety of diseases. However, the specific biological function of miR-663b in CRC requires further investigation. The aim of the present study was to elucidate the role and underlying molecular mechanism of action of miR-663b in CRC. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) analysis and western blot analysis were employed to measure the expression of miR-663b at the RNA and protein level, respectively. Flow cytometry was used to detect cell apoptosis. Cell proliferation, migration and invasion were evaluated by the Cell Counting Kit-8, wound healing and Transwell assays, respectively. A dual-luciferase reporter assay was used to validate the potential target gene of miR-663b. The expression of miR-663b was identified to be markedly upregulated in CRC cells. Ectopic miR-663b expression promoted CRC cell proliferation, migration and invasion, and inhibited apoptosis. The dual-luciferase reporter assay identified adenomatous polyposis coli 2 (APC2) as a direct target of miR-663b in CRC cells. Further investigation indicated that miR-663b was involved in CRC cell invasion through the Wnt/β-catenin pathway. Therefore, overexpression of miR-663b was able to promote CRC cell proliferation, migration and invasion by regulating the Wnt/β-catenin pathway through targeting APC2, suggesting that miR-663b may be a useful target for the diagnosis and treatment of CRC.
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Affiliation(s)
- Fenqiang Xiao
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Wangbin Chen
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Chao Yu
- Department of Medical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Gang Zhao
- Department of Emergency Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
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Akyay OZ, Gov E, Kenar H, Arga KY, Selek A, Tarkun İ, Canturk Z, Cetinarslan B, Gurbuz Y, Sahin B. Mapping the Molecular Basis and Markers of Papillary Thyroid Carcinoma Progression and Metastasis Using Global Transcriptome and microRNA Profiling. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2020; 24:148-159. [PMID: 32073999 DOI: 10.1089/omi.2019.0188] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Papillary thyroid carcinoma (PTC) is the most common type of thyroid cancer (TC). In a subgroup of patients with PTC, the disease progresses to an invasive stage or in some cases to distant organ metastasis. At present, there is an unmet clinical and diagnostic need for early identification of patients with PTC who are at risk of disease progression or metastasis. In this study, we report several molecular leads and potential biomarker candidates of PTC metastasis for further translational research. The study design was based on comparisons of PTC in three different groups using cross-sectional sampling: Group 1, PTC localized to the thyroid (n = 20); Group 2, PTC with extrathyroidal progression (n = 22); and Group 3, PTC with distant organ metastasis (n = 20). Global transcriptome and microRNAs (miRNA) analyses were conducted using an initial screening set comprising nine formalin-fixed paraffin-embedded PTC samples obtained from three independent patients per study group. The findings were subsequently validated by quantitative real-time polymerase chain reaction (qRT-PCR) using the abovementioned independent patient sample set (n = 62). Comparative analyses of differentially expressed miRNAs showed that miR-193-3p, miR-182-5p, and miR-3607-3p were novel miRNAs associated with PTC metastasis. These potential miRNA biomarkers were associated with TC metastasis and miRNA-target gene associations, which may provide important clinicopathological information on metastasis. Our findings provide new molecular leads for further translational biomarker research, which could facilitate the identification of patients at risk of PTC disease progression or metastasis.
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Affiliation(s)
- Ozlem Zeynep Akyay
- Department of Endocrinology and Metabolism, Sanliurfa Mehmet Akif İnan Education and Research Hospital, Health Sciences University, Sanliurfa, Turkey
| | - Esra Gov
- Department of Bioengineering, Faculty of Engineering, Adana Alparslan Turkes Science and Technology University, Adana, Turkey
| | - Halime Kenar
- Experimental and Clinical Research Center, Diabetes and Obesity Research Laboratory, Kocaeli University, Kocaeli, Turkey
| | - Kazım Yalcın Arga
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Alev Selek
- Department of Endocrinology and Metabolism, School of Medicine, Kocaeli University, Kocaeli, Turkey
| | - İlhan Tarkun
- Department of Endocrinology and Metabolism, Anadolu Medical Center, İstanbul, Turkey
| | - Zeynep Canturk
- Department of Endocrinology and Metabolism, School of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Berrin Cetinarslan
- Department of Endocrinology and Metabolism, School of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Yesim Gurbuz
- Department of Pathology, School of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Busra Sahin
- Department of Pathology, School of Medicine, Kocaeli University, Kocaeli, Turkey
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Huang Q, Hou S, Zhu X, Liu S. MicroRNA-192 promotes the development of nasopharyngeal carcinoma through targeting RB1 and activating PI3K/AKT pathway. World J Surg Oncol 2020; 18:29. [PMID: 32013999 PMCID: PMC6998165 DOI: 10.1186/s12957-020-1798-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 01/20/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The dysregulation of microRNAs (miRNAs) has been found in diseases and cancers, including microRNA-192 (miR-192). This study was designed to investigate the role of miR-192 in nasopharyngeal carcinoma (NPC) progression. METHODS The expression levels of miR-192 and some genes were assessed by qRT-PCR and Western blot. The function of miR-192 was investigated through MTT, Transwell, and dual-luciferase reporter assays. RESULTS The expression of miR-192 was increased in NPC tissues, and high miR-192 expression predicted poor prognosis in NPC patients. Functionally, upregulation of miR-192 promoted NPC cell migration, invasion, and growth. Furthermore, miR-192 activated EMT and PI3K/AKT pathway to regulate NPC progression. In addition, miR-192 directly targeted RB1 and suppressed its expression in NPC. Moreover, overexpression of RB1 weakened the promoted effect of miR-192 in NPC. CONCLUSION miR-192 promoted cell viability and metastasis in NPC through suppressing RB1 expression and activating PI3K/AKT pathway.
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Affiliation(s)
- Qingli Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Liaocheng People's Hospital, No.67 Dongchang West Road, Liaocheng, 252000, Shandong Province, People's Republic of China
| | - Sen Hou
- Department of Otolaryngology, Yanggu People's Hospital, Liaocheng, Shandong Province, People's Republic of China
| | - Xiuqing Zhu
- Department of Otolaryngology, Chiping People's Hospital, Liaocheng, Shandong Province, People's Republic of China
| | - Shouzhou Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Liaocheng People's Hospital, No.67 Dongchang West Road, Liaocheng, 252000, Shandong Province, People's Republic of China.
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Mariniello RM, Maria Orlandella F, De Stefano AE, Iervolino PLC, Smaldone G, Luciano N, Cervone N, Munciguerra F, Esposito S, Mirabelli P, Salvatore G. The TUSC2 Tumour Suppressor Inhibits the Malignant Phenotype of Human Thyroid Cancer Cells via SMAC/DIABLO Protein. Int J Mol Sci 2020; 21:ijms21030702. [PMID: 31973107 PMCID: PMC7037188 DOI: 10.3390/ijms21030702] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 01/15/2020] [Indexed: 12/11/2022] Open
Abstract
Thyroid carcinoma is the most common endocrine cancer and includes different forms. Among these, anaplastic thyroid carcinoma (ATC) is the rarest but the most lethal subtype, compared to papillary thyroid carcinoma (PTC) which shows an overall good prognosis. We have previously showed that Tumor Suppressor Candidate 2 (TUSC2), a known tumour suppressor gene, is downregulated in human PTC and ATC compared to normal thyroid samples. The aim of this study was to gain insight into the molecular mechanisms induced by TUSC2 in thyroid cancer cells. Here, we stably transfected TUSC2 in papillary (TPC-1) and in anaplastic (8505C) thyroid cancer cell lines and studied its effects on several biological processes, demonstrating that TUSC2 overexpression decreased thyroid cancer cell proliferation, migration and invasion. Through the proteome profiler apoptosis array, we observed that TUSC2 increased sensitivity to apoptosis by increasing the SMAC/DIABLO and CYTOCHROME C proteins. On the other hand, transient silencing of TUSC2, by siRNA, in an immortalized thyroid follicular epithelial cell line (Nthy-ori 3-1) showed the opposite effect. Finally modulation of SMAC/DIABLO partially rescued the biological effects of TUSC2. Thus, our data highlight a tumour suppressor role of TUSC2 in thyroid carcinogenesis, suggesting that it could be a promising target and biomarker for thyroid carcinoma.
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Affiliation(s)
- Raffaela Mariarosaria Mariniello
- Dipartimento di Scienze Motorie e del Benessere, Universita’ “Parthenope”, Via Medina 40, 80133 Napoli, Italy
- CEINGE—Biotecnologie Avanzate S.c.a.r.l., Via Gaetano Salvatore 486, 80145 Napoli, Italy
| | | | - Anna Elisa De Stefano
- Dipartimento di Scienze Motorie e del Benessere, Universita’ “Parthenope”, Via Medina 40, 80133 Napoli, Italy
- CEINGE—Biotecnologie Avanzate S.c.a.r.l., Via Gaetano Salvatore 486, 80145 Napoli, Italy
| | - Paola Lucia Chiara Iervolino
- CEINGE—Biotecnologie Avanzate S.c.a.r.l., Via Gaetano Salvatore 486, 80145 Napoli, Italy
- Dipartimento di Scienze Biomediche Avanzate, Universita’ “Federico II”, Via Pansini 5, 80131 Napoli, Italy
| | | | - Neila Luciano
- CEINGE—Biotecnologie Avanzate S.c.a.r.l., Via Gaetano Salvatore 486, 80145 Napoli, Italy
| | - Nara Cervone
- CEINGE—Biotecnologie Avanzate S.c.a.r.l., Via Gaetano Salvatore 486, 80145 Napoli, Italy
| | - Francesco Munciguerra
- CEINGE—Biotecnologie Avanzate S.c.a.r.l., Via Gaetano Salvatore 486, 80145 Napoli, Italy
| | - Silvia Esposito
- CEINGE—Biotecnologie Avanzate S.c.a.r.l., Via Gaetano Salvatore 486, 80145 Napoli, Italy
| | | | - Giuliana Salvatore
- Dipartimento di Scienze Motorie e del Benessere, Universita’ “Parthenope”, Via Medina 40, 80133 Napoli, Italy
- CEINGE—Biotecnologie Avanzate S.c.a.r.l., Via Gaetano Salvatore 486, 80145 Napoli, Italy
- IRCCS SDN, Via Emanuele Gianturco 113, 80143 Napoli, Italy
- Correspondence:
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Yin X, Zheng X, Liu M, Wang D, Sun H, Qiu Y, Chen J, Shi B. Exosomal miR-663b targets Ets2-repressor factor to promote proliferation and the epithelial-mesenchymal transition of bladder cancer cells. Cell Biol Int 2020; 44:958-965. [PMID: 31872468 DOI: 10.1002/cbin.11292] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/21/2019] [Indexed: 12/13/2022]
Abstract
Exosomes circulating in biological fluids have the potential to be utilized as cancer biomarkers and are associated with cancer progression and metastasis. MicroRNA (miR)-663b has been found to be elevated in plasma from patients with bladder cancer (BC). However, the functional role of exosomal miR-663b in BC processes remains unknown. Here, we isolated exosomes from plasma and found that the miR-663b level was elevated in exosomes from plasma of patients with BC compared with healthy controls. Exosomal miR-663b from BC cells promoted cell proliferation and epithelial-mesenchymal transition. Moreover, exosomal miR-663b targeted Ets2-repressor factor and acted as a tumor promoter in BC cells. Taken together, our findings suggested that exosomal miR-663b is a promising potential biomarker and target for clinical detection and therapy in BC.
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Affiliation(s)
- Xinbao Yin
- Department of Urology, Qilu Hospital of Shandong University, Qingdao, Shandong, 266035, P.R. China
| | - Xueping Zheng
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266003, P.R. China
| | - Ming Liu
- Department of Urology, Qilu Hospital of Shandong University, Qingdao, Shandong, 266035, P.R. China
| | - Dong Wang
- Department of Urology, Qilu Hospital of Shandong University, Qingdao, Shandong, 266035, P.R. China
| | - Hui Sun
- Department of Urology, Qilu Hospital of Shandong University, Qingdao, Shandong, 266035, P.R. China
| | - Yue Qiu
- Department of Urology, Qilu Hospital of Shandong University, Qingdao, Shandong, 266035, P.R. China
| | - Jun Chen
- Department of Urology, Qilu Hospital of Shandong University, Qingdao, Shandong, 266035, P.R. China
| | - Benkang Shi
- Department of Urology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, P.R. China
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Hong S, Yan Z, Wang H, Ding L, Song Y, Bi M. miR-663b promotes colorectal cancer progression by activating Ras/Raf signaling through downregulation of TNK1. Hum Cell 2019; 33:104-115. [PMID: 31758392 DOI: 10.1007/s13577-019-00294-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 10/16/2019] [Indexed: 12/13/2022]
Abstract
MiR-663b has been demonstrated to be abnormally expressed in several cancer types and was involved in the progression of cancer. Although overexpression of miR-663b in colorectal cancer was observed, the role of miR-663b in colorectal cancer cells has not been identified yet. In this study, we analyzed expression of miR-663b in colorectal tumors and explored the molecular mechanism of miR-663b in colorectal cancer cells. MiR-663b was significantly overexpressed in colorectal tumors and cell lines. Downregulation of miR-663b inhibited cell proliferation and sphere forming ability in colorectal cancer cells. In addition, miR-663b downregulation inactivated Ras/Raf signaling activity and subsequently decreased YAP1 and CD44 expression in colorectal cancer cells. Using TargetScan software, TNK1, a negative regulator of Ras/Raf signaling, was predicted to be a target gene of miR-663b. Western blotting and RT-qPCR showed that TNK1 expression was negatively regulated by miR-663b. In addition, the direct binding of miR-663b to TNK1 mRNA was proved by dual luciferase reporter assay. Furthermore, downregulation of miR-663b inhibited colorectal cancer cell proliferation and stemness, which was reversed after siRNA-mediated silencing of TNK1. In conclusion, the current study revealed a pivotal role of miR-663b in the progression of colorectal cancer.
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Affiliation(s)
- Sen Hong
- Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun, 130021, Jilin, People's Republic of China
| | - Zhenkun Yan
- Department of Endoscopy Center, China-Japan Union Hospital of Jilin University, Changchun, 130022, Jilin, People's Republic of China
| | - Helei Wang
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Changchun, 130021, Jilin, People's Republic of China.
| | - Lei Ding
- Department of Radiology, China-Japan Union Hospital of Jilin University, Changchun, 130022, Jilin, People's Republic of China.
| | - Yumei Song
- Department of Thoracic Oncology, Tumor Hospital of Jilin Province, Changchun, Jilin, People's Republic of China
| | - Miaomiao Bi
- Department of Ophthalmology, The China-Japan Union Hospital of Jilin University, Jilin University, Changchun, 130022, Jilin, People's Republic of China
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12
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Xie HH, Huan WT, Han JQ, Ren WR, Yang LH. MicroRNA-663 facilitates the growth, migration and invasion of ovarian cancer cell by inhibiting TUSC2. Biol Res 2019; 52:18. [PMID: 30944041 PMCID: PMC6448305 DOI: 10.1186/s40659-019-0219-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 02/26/2019] [Indexed: 12/01/2022] Open
Abstract
Background MicroRNAs (miRNAs) have emerged as the critical modulators of the tumorigenesis and tumor progression. Methods The levels of miR-663 in ovarian cancer cell lines and clinical tissues were detected using qRT-PCR assays. The Transwell invasion and wound healing assay were conducted to assess the roles of miR-663 in the migration and invasion of ovarian cancer cell in vitro. Rescue assays were carried out to confirm the contribution of tumor suppressor candidate 2 (TUSC2) in the aggressiveness of cancer cell which was regulated by miR-663. Results The levels of miR-663 were up-regulated in ovarian cancer tissues in comparison with the corresponding normal tissues. Up-regulation of miR-663 increased the proliferation, colony formation, migration and invasion of ovarian cancer SKOV3 cell. Additional, over-expression of miR-663 increased the tumor growth of SKOV3 in xenograft model. Bioinformatics analysis and luciferase reporter assay identified that miR-663 decreased the level of TUSC2 via binding to the 3′-UTR of TUSC2 gene. Finally, the expression of TUSC2 was inversely associated with the level of miR-663 in ovarian carcinoma tissue and over-expression of TUSC2 inhibited the migration and invasion abilities of SKOV3 that was promoted by miR-663. Conclusion Altogether, these results indicate that miR-663 acts as a potential tumor-promoting miRNA through targeting TUSC2 in ovarian cancer. Electronic supplementary material The online version of this article (10.1186/s40659-019-0219-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hui Hui Xie
- Obstetrics and Gynecology, Xuzhou Central Hospital, Xuzhou, Jiangsu, China
| | - Wen Ting Huan
- Obstetrics and Gynecology, Xuzhou Central Hospital, Xuzhou, Jiangsu, China
| | - Jiang Qiong Han
- Department of Integrated Traditional Chinese and Western Medicine, The Third Affiliated Hospital of Kunming Medical University (The Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Wei Ru Ren
- Gynaecology Ward of Maternal and Child Health Hospital, Zaozhuang, Shandong, China
| | - Li Hua Yang
- Department of Gynaecology, the 2nd Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
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13
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Kim YK. Analysis of Circular RNAs in the Coronary Arteries of Patients with Kawasaki Disease. J Lipid Atheroscler 2019; 8:50-57. [PMID: 32821699 PMCID: PMC7379082 DOI: 10.12997/jla.2019.8.1.50] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/11/2019] [Accepted: 02/07/2019] [Indexed: 01/23/2023] Open
Abstract
Objectives Kawasaki disease is a disease in children that presents with diverse symptoms including acute fever, conjunctivitis, body rash, swollen lymph nodes of the neck, and peeling of the skin on the hands and feet. Although patients with Kawasaki disease are continually observed and diagnosed, there are no established molecular markers to diagnose this disease quickly and accurately. Moreover, there have been very few studies on the molecular mechanism underlying Kawasaki disease. Methods The expression profiles of circular RNAs (circRNAs) from coronary artery tissue of patients with Kawasaki disease were analyzed using public sequencing datasets. After selecting reliable sequencing libraries and high-quality reads, bioinformatics pipelines were applied to quantify the expression of back-splicing reads of host genes. Results Many circRNAs were identified to be differentially expressed between the controls and patients with Kawasaki disease. Among them, circRNAs originating from host genes including homeodomain interacting protein kinase 3 (circHIPK3), zinc finger protein 124 (circZNF124), WAS protein homolog associated with actin, Golgi membranes, and microtubules pseudogene 1 (circWHAMMP1), SLAIN motif family, member 2 (circSLAIN2), and ataxia telangiectasia mutated (circATM) were down-regulated significantly in untreated patients with Kawasaki disease. Importantly, the level of these circRNAs returned to normal in the coronary arteries of treated patients, suggesting these circRNAs are possible molecular markers for Kawasaki disease. For circWHAMMP1 and circZNF124, the microRNAs that may be regulated by these circRNAs were also identified. Conclusions This study will contribute to future research seeking to determine the regulatory pathways involved in the pathogenesis of Kawasaki disease.
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Affiliation(s)
- Young-Kook Kim
- Department of Biochemistry, Chonnam National University Medical School, Hwasun, Korea
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14
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Guo L, Li B, Miao M, Yang J, Ji J. MicroRNA‑663b targets GAB2 to restrict cell proliferation and invasion in hepatocellular carcinoma. Mol Med Rep 2019; 19:2913-2920. [PMID: 30720118 DOI: 10.3892/mmr.2019.9934] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 11/28/2018] [Indexed: 11/05/2022] Open
Abstract
Previous studies have demonstrated that numerous tumor‑specific microRNAs (miRNAs) are upregulated or downregulated in hepatocellular carcinoma (HCC), and that their dysregulation is implicated in HCC occurrence and development. Therefore, investigation of crucial miRNAs involved in HCC oncogenesis and progression may provide novel insights into the therapy of patients with this malignant tumor. In the present study, reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) assays were performed to detect tissue and cellular expression levels of miRNA‑663b (miR‑663b) in HCC. The effects of miR‑663b overexpression on the proliferation and invasion of HCC cells were examined using Cell Counting Kit‑8 and Transwell invasion assays, respectively. The direct target of miR‑663b in HCC cells was determined by bioinformatics analysis, luciferase reporter assay, RT‑qPCR and western blot analysis. It was observed that miR‑663b was expressed at low levels in HCC tissues and cell lines. miR‑663b upregulation suppressed the proliferative and invasive abilities of HCC cells. Additionally, Grb2‑associated binding 2 (GAB2) was regarded as a direct target gene of miR‑663b in HCC cells. Furthermore, GAB2 was overexpressed in HCC tissues, and overexpression of GAB2 was inversely correlated with levels of miR‑663b. GAB2 overexpression was able to rescue the suppressive effects of miR‑663b on HCC cells. These results demonstrated that this newly‑identified miR‑663b/GAB2 axis may be implicated in HCC occurrence and development.
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Affiliation(s)
- Liping Guo
- Department of Pathology, Medical College of Yan'an University, Yan'an, Shanxi 716000, P.R. China
| | - Baoli Li
- Department of Pharmacology, Medical College of Yan'an University, Yan'an, Shanxi 716000, P.R. China
| | - Meijing Miao
- Department of Nursing, Medical College of Yan'an University, Yan'an, Shanxi 716000, P.R. China
| | - Jianjun Yang
- Department of Interventional Radiology, Affiliated Hospital of Yan'an University, Yan'an, Shanxi 716000, P.R. China
| | - Jinshan Ji
- Department of Preventive Medicine, Medical College of Yan'an University, Yan'an, Shanxi 716000, P.R. China
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15
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Zhao CX, Zhu W, Ba ZQ, Xu HJ, Liu WD, Zhu B, Wang L, Song YJ, Yuan S, Ren CP. The regulatory network of nasopharyngeal carcinoma metastasis with a focus on EBV, lncRNAs and miRNAs. Am J Cancer Res 2018; 8:2185-2209. [PMID: 30555738 PMCID: PMC6291648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 10/16/2018] [Indexed: 06/09/2023] Open
Abstract
Metastasis of nasopharyngeal carcinoma (NPC) remains a main cause of death for NPC patients even though great advances have been made in therapeutic approaches. An in-depth study into the molecular mechanisms of NPC metastasis will help us combat NPC. Epstein-Barr virus (EBV) infection is an evident feature of nonkeratinizing NPC and is strongly associated with tumor metastasis. Recently, long noncoding RNAs (lncRNAs) and microRNAs (miRNAs) have become a hot topic of research due to their epigenetic regulatory roles in NPC metastasis. The EBV products, lncRNAs and miRNAs can target each other and share several common signaling pathways, which form an interconnected, complex molecular regulatory network. In this review, we discuss the features of this regulatory network and summarize the molecular mechanisms of NPC metastasis, focusing on EBV, lncRNAs and miRNAs with updated knowledge.
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Affiliation(s)
- Chen-Xuan Zhao
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
| | - Wei Zhu
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
| | - Zheng-Qing Ba
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
| | - Hong-Juan Xu
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
| | - Wei-Dong Liu
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
| | - Bin Zhu
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
| | - Lei Wang
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
| | - Yu-Jia Song
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
| | - Shuai Yuan
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
| | - Cai-Ping Ren
- The Key Laboratory of Carcinogenesis of The Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of The Chinese Ministry of Education, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, P. R. China
- Cancer Research Institute, Collaborative Innovation Center for Cancer Medicine, School of Basic Medical Science, Central South UniversityChangsha 410078, Hunan, P. R. China
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16
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Identification of chronological and photoageing-associated microRNAs in human skin. Sci Rep 2018; 8:12990. [PMID: 30154427 PMCID: PMC6113407 DOI: 10.1038/s41598-018-31217-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 08/09/2018] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs are short non-coding RNAs that play key roles in regulating biological processes. In this study, we explored effects of chronological and photoageing on the miRNome of human skin. To this end, biopsies were collected from sun-exposed (outer arm, n = 45) and sun-protected (inner arm, n = 45) skin from fair-skinned (phototype II/III) healthy female volunteers of three age groups: young, 18-25 years, middle age, 40-50 years and aged, > 70 years. Strict inclusion criteria were used for photoageing scoring and for chronological ageing. Microarray analysis revealed that chronological ageing had minor effect on the human skin miRNome. In contrast, photoageing had a robust impact on miRNAs, and a set of miRNAs differentially expressed between sun-protected and sun-exposed skin of the young and aged groups was identified. Upregulation of miR-383, miR-145 and miR-34a and downregulation of miR-6879, miR-3648 and miR-663b were confirmed using qRT-PCR in sun-exposed skin compared with sun-protected skin. qRT-PCR analysis revealed that miR-383, miR-34a and miR-134 were differentially expressed in all three age groups both in chronological and photoageing, suggesting a synergetic effect of intrinsic and extrinsic ageing on their expression. In conclusion, our study identifies a unique miRNA signature which may contribute to skin ageing.
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17
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Jiang H, Cheng L, Hu P, Liu R. MicroRNA‑663b mediates TAM resistance in breast cancer by modulating TP73 expression. Mol Med Rep 2018; 18:1120-1126. [PMID: 29845295 DOI: 10.3892/mmr.2018.9064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 05/09/2018] [Indexed: 11/06/2022] Open
Abstract
Breast cancer is the second leading cause of cancer‑associated mortalities in women. Tamoxifen (TAM) is an endocrine therapy commonly used in the treatment of patients with breast cancer expressing estrogen receptor α. However, treatment often ends in failure due to the emergence of drug resistance. MicroRNAs (miRNAs), a family of small non‑coding RNAs, serve critical roles in the regulation of gene expression and cell events. To date, whether miRNA‑663b could mediate TAM resistance in breast cancer remains unknown. Therefore, the aim of the present study was to investigate the role of miRNA‑663b in TAM resistance in breast cancer. The results demonstrated that miRNA‑663b was upregulated in breast cancer with TAM resistance. Tumor protein 73 (TP73) was a direct target of miRNA‑663b, and was negatively regulated by miRNA‑663b in MCF‑7 cells. Furthermore, it was identified that downregulation of miRNA‑663b inhibited cell proliferation ability and promoted cell apoptosis, resulting in enhanced TAM sensitivity. In addition, these findings suggested that TP73 silencing may have eliminated the effects of miRNA‑663b inhibitor on breast cancer cells. In conclusion, the present study verified a novel molecular link between miRNA‑663b and TP73, and indicated that miRNA‑663b may be a critical therapeutic target in breast cancer.
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Affiliation(s)
- Hua Jiang
- Breast Cancer Center, Department of Breast and Thyroid Surgery, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Lin Cheng
- Breast Cancer Center, Department of Breast and Thyroid Surgery, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Pan Hu
- Breast Cancer Center, Department of Breast and Thyroid Surgery, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Renbin Liu
- Breast Cancer Center, Department of Breast and Thyroid Surgery, The Third Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510630, P.R. China
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18
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Dubey R, Malhotra SS, Gupta SK. Forskolin-mediated BeWo cell fusion involves down-regulation of miR-92a-1-5p that targets dysferlin and protein kinase cAMP-activated catalytic subunit alpha. Am J Reprod Immunol 2018; 79:e12834. [PMID: 29484758 DOI: 10.1111/aji.12834] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 02/04/2018] [Indexed: 12/16/2022] Open
Abstract
PROBLEM To study the role of miRNA(s) during trophoblastic BeWo cell fusion. METHOD OF STUDY Changes in miRNA(s) profile of BeWo cells treated with forskolin were analyzed using Affymetrix miRNA microarray platform. Down-regulated miRNA, miR-92a-1-5p, was overexpressed in BeWo cells followed by forskolin treatment to understand its relevance in the process of BeWo cell fusion by desmoplakin I+II staining and hCG secretion by ELISA. Predicted targets of miR-92a-1-5p were also confirmed by qRT-PCR/Western blotting. RESULTS The miRNA profiling of BeWo cells after forskolin (25 μmol/L) treatment identified miR-92a-1-5p as the most significantly down-regulated miRNA both at 24 and 48 hours time points. Overexpression of miR-92a-1-5p in these cells led to a significant decrease in forskolin-mediated cell fusion and hCG secretion. miRNA target prediction software, TargetScan, revealed dysferlin (DYSF) and protein kinase cAMP-activated catalytic subunit alpha (PRKACA), as target genes of miR-92a-1-5p. Overexpression of miR-92a-1-5p in BeWo cells showed reduction in forskolin-induced transcripts for DYSF and PRKACA. Further, reduction in DYSF (~2.6-fold) at protein level and PRKACA-encoded protein kinase A catalytic subunit alpha (PKAC-α; ~1.6-fold) were also observed. CONCLUSION These observations suggest that miR-92a-1-5p regulates forskolin-mediated BeWo cell fusion and hCG secretion by regulating PKA signaling pathway and dysferlin expression.
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Affiliation(s)
- Richa Dubey
- Reproductive Cell Biology Laboratory, National Institute of Immunology, New Delhi, India
| | - Sudha S Malhotra
- Reproductive Cell Biology Laboratory, National Institute of Immunology, New Delhi, India
| | - Satish K Gupta
- Reproductive Cell Biology Laboratory, National Institute of Immunology, New Delhi, India
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