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Mohamed AH, Patel AA, Abdulmonem WA, Muzammil K, Shafie A, Ashour AA, Mirdad TMAM, Mallick AK, Alsaiari AA, Almalki AA. The role of miR-765 in human cancers. Int Immunopharmacol 2024; 139:112779. [PMID: 39068750 DOI: 10.1016/j.intimp.2024.112779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/18/2024] [Accepted: 07/23/2024] [Indexed: 07/30/2024]
Abstract
MicroRNAs, a collection of short noncoding RNAs, are promising biomarkers for identifying cancer in its early stages and tracking the effectiveness of treatment. This is due to their critical role in regulating gene expression and other vital biological functions via cell-level epigenetic mechanisms. This review brings together data on the molecular and clinical effects of miR-765 on different types of cancer. Significant variation in miR-765 levels has been observed in a variety of cancer types, suggesting that it could have an oncogene or tumor suppressor role. A number of pathways, including PLP2/Notch, VEGFA/Akt1, PDX1, KLK4, RUNX2, DPF3, EMP3, APE1, ERK/EMT axis, and others, are impacted by the inclusion of miR-765 in their analysis. MiR-765 is an essential biomarker that shows promise as a diagnostic tool for various types of cancer. The latest research has identified them as reliable predictive markers for detecting tumor development at an early stage. Based on our study, miR-765 shows promising potential as a biomarker for prognosis in multiple types of cancer. Specifically, we suggest that miR-765 could be an early detection marker for tumor development, progression, and metastasis.
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Affiliation(s)
- Asma'a H Mohamed
- Biomedical Engineering Department, College of Engineering and Technologies, Al-Mustaqbal University, Babil 51001, Hilla, Iraq.
| | - Ayyub Ali Patel
- Department of Clinical Biochemistry, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Waleed Al Abdulmonem
- Department of Pathology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Khursheed Muzammil
- Department of Public Health, College of Applied Medical Sciences, Khamis Mushait Campus, King Khalid University, Abha 62561, Saudi Arabia
| | - Alaa Shafie
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O.Box 11099, Taif 21944, Saudi Arabia
| | - Amal Adnan Ashour
- Department of Oral & Maxillofacial Surgery and Diagnostic Sciences, Faculty of Dentistry. Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | | | - Ayaz Khurram Mallick
- Department of Clinical Biochemistry, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Ahad Amer Alsaiari
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O.Box 11099, Taif 21944, Saudi Arabia
| | - Abdulraheem Ali Almalki
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O.Box 11099, Taif 21944, Saudi Arabia
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Hu S, Ye J, Wang K, Xiong Y, Nie X. Inhibition of miR-9 Combined With Cisplatin Targeting APE1 Against Angiogenesis in Osteosarcoma. J Craniofac Surg 2024:00001665-990000000-01613. [PMID: 38771203 DOI: 10.1097/scs.0000000000010325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 04/13/2024] [Indexed: 05/22/2024] Open
Abstract
Osteosarcoma (OS) is a highly malignant tumor, and chemotherapy resistance suggests poor prognosis in OS patients. In this study, the authors discovered that miR-9 has a pro-angiogenic role in OS. The anti-angiogenic effects of cisplatin were greatly increased when miR-9 was suppressed in OS. In addition, the authors demonstrated that miR-9 plays a pro-angiogenic role by targeting apoptosis-inducing factor 1 (APE1) in OS. Importantly, our in vivo experiments showed that inhibition of miR-9 combined with cisplatin could suppress xenograft tumor growth by targeting APE1 and decreasing angiogenesis in OS. In summary, our results suggest that miR-9 plays a role as a tumor promoter, and inhibiting miR-9 and APE1 is a new strategy for inhibiting OS angiogenesis and chemotherapy resistance.
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Affiliation(s)
- Sunqiang Hu
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou
| | - Jiaqi Ye
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou
| | - Keyu Wang
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou
| | - Yan Xiong
- Department of Orthopaedics, Daping Hospital, Army Medical University, Chongqing, China
| | - Xin Nie
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou
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Siqueira PB, de Sousa Rodrigues MM, de Amorim ÍSS, da Silva TG, da Silva Oliveira M, Rodrigues JA, de Souza da Fonseca A, Mencalha AL. The APE1/REF-1 and the hallmarks of cancer. Mol Biol Rep 2024; 51:47. [PMID: 38165468 DOI: 10.1007/s11033-023-08946-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/10/2023] [Indexed: 01/03/2024]
Abstract
APE1/REF-1 (apurinic/apyrimidinic endonuclease 1 / redox factor-1) is a protein with two domains, with endonuclease function and redox activity. Its main activity described is acting in DNA repair by base excision repair (BER) pathway, which restores DNA damage caused by oxidation, alkylation, and single-strand breaks. In contrast, the APE1 redox domain is responsible for regulating transcription factors, such as AP-1 (activating protein-1), NF-κB (Nuclear Factor kappa B), HIF-1α (Hypoxia-inducible factor 1-alpha), and STAT3 (Signal Transducers and Activators of Transcription 3). These factors are involved in physiological cellular processes, such as cell growth, inflammation, and angiogenesis, as well as in cancer. In human malignant tumors, APE1 overexpression is associated with lung, colon, ovaries, prostate, and breast cancer progression, more aggressive tumor phenotypes, and worse prognosis. In this review, we explore APE1 and its domain's role in cancer development processes, highlighting the role of APE1 in the hallmarks of cancer. We reviewed original articles and reviews from Pubmed related to APE1 and cancer and found that both domains of APE1/REF-1, but mainly its redox activity, are essential to cancer cells. This protein is often overexpressed in cancer, and its expression and activity are correlated to processes such as proliferation, invasion, inflammation, angiogenesis, and resistance to cell death. Therefore, APE1 participates in essential processes of cancer development. Then, the activity of APE1/REF-1 in these hallmarks suggests that targeting this protein could be a good therapeutic approach.
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Affiliation(s)
- Priscyanne Barreto Siqueira
- Departamento de Biofísica e Biometria, Laboratório de Biologia do Câncer, Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Rio de Janeiro, Brasil.
| | - Mariana Moreno de Sousa Rodrigues
- Departamento de Biofísica e Biometria, Laboratório de Biologia do Câncer, Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Rio de Janeiro, Brasil.
| | - Ísis Salviano Soares de Amorim
- Departamento de Biofísica e Biometria, Laboratório de Biologia do Câncer, Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Rio de Janeiro, Brasil
- Laboratório de Alimentos Funcionais, Universidade Federal do Rio de Janeiro, Instituto de Nutrição Josué de Castro, Rio de Janeiro, Brasil
| | - Thayssa Gomes da Silva
- Departamento de Biofísica e Biometria, Laboratório de Biofotônica, Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Rio de Janeiro, Brasil
| | - Matheus da Silva Oliveira
- Departamento de Biofísica e Biometria, Laboratório de Biologia do Câncer, Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Rio de Janeiro, Brasil
| | - Juliana Alves Rodrigues
- Departamento de Biofísica e Biometria, Laboratório de Biologia do Câncer, Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Rio de Janeiro, Brasil
| | - Adenilson de Souza da Fonseca
- Departamento de Biofísica e Biometria, Laboratório de Biofotônica, Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Rio de Janeiro, Brasil
| | - Andre Luiz Mencalha
- Departamento de Biofísica e Biometria, Laboratório de Biologia do Câncer, Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Rio de Janeiro, Brasil
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Hong JY, Oh HH, Park SY, Park YL, Cho SB, Joo YE. Expression of Apurinic/Apyrimidinic Endonuclease 1 in Colorectal Cancer and its Relation to Tumor Progression and Prognosis. In Vivo 2023; 37:2070-2077. [PMID: 37652525 PMCID: PMC10500501 DOI: 10.21873/invivo.13304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 09/02/2023]
Abstract
BACKGROUND/AIM Over-expression of apurinic/apyrimidinic endonuclease 1 (APE1) has been demonstrated to be associated with cancer progression, chemo- and radioresistance in various cancers. This study examined the expression of APE1 and its relation to tumor progression and prognosis in patients with colorectal cancer (CRC). MATERIALS AND METHODS We investigated 193 patients with CRC who received curative surgery for whom formalin-fixed and paraffin-embedded blocks were available, and long-term tumor-specific survival rate analysis was possible. The expression of APE1 was investigated by reverse transcription-polymerase chain reaction, western blotting, and immunohistochemistry in CRC and lymph node tissues. The apoptosis, proliferation, and angiogenesis of CRC cells were determined using terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assay, and immunohistochemical staining for Ki-67 and CD34 antibodies. RESULTS APE1 was over-expressed in CRC and metastatic lymph node tissues compared with normal colorectal mucosa and non-metastatic lymph node tissues. Over-expression of APE1 was significantly associated with advanced stage, lymphovascular invasion, perineural invasion, deeper tumor invasion, lymph node metastasis, distant metastasis, and poor survival. Multivariate analysis demonstrated that APE1, perineural invasion, and lymph node metastasis were the independent prognostic factors associated with overall survival. The mean Ki-67 labeling index value of APE1-positive tumors was significantly higher than that of APE1-negative tumors. However, there was no significant association between APE1 expression and the apoptotic index or microvessel density. CONCLUSION Over-expression of APE1 is significantly associated with tumor progression and poor survival in patients with CRC. Therefore, APE1 may be a novel biomarker and present a potential prognostic factor for CRC.
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Affiliation(s)
- Ji-Yun Hong
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hyung-Hoon Oh
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sun-Young Park
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Young-Lan Park
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sung-Bum Cho
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Young-Eun Joo
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
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Hsa_circ_0007478 aggravates NLRP3 inflammasome activation and lipid metabolism imbalance in ox-LDL-stimulated macrophage via miR-765/EFNA3 axis. Chem Biol Interact 2022; 368:110195. [DOI: 10.1016/j.cbi.2022.110195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/07/2022] [Accepted: 09/12/2022] [Indexed: 11/20/2022]
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MicroRNAs and osteosarcoma: Potential targets for inhibiting metastasis and increasing chemosensitivity. Biochem Pharmacol 2022; 201:115094. [PMID: 35588853 DOI: 10.1016/j.bcp.2022.115094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 12/12/2022]
Abstract
Osteosarcoma (OS) is the third most common cancer in young adults after lymphoma and brain cancer. Metastasis, like other cellular events, is dependent on signaling pathways; a series of changes in some proteins and signaling pathways pave the way for OS cells to invade and migrate. Ezrin, TGF-β, Notch, RUNX2, matrix metalloproteinases (MMPs), Wnt/β-catenin, and phosphoinositide 3-kinase (PI3K)/AKT are among the most important of these proteins and signaling pathways. Despite the improvements in treating OS, the overall survival of patients suffering from the metastatic disease has not experienced any significant change after surgical treatments and chemotherapy and 5-years overall survival in patients with metastatic OS is about 20%. Studies have shown that overexpression or inhibition of some microRNAs (miRNAs) has significant effects in limiting the invasion and migration of OS cells. The results of these studies highlight the potential of the clinical application of some miRNA mimics and miRNA inhibitors (antagomiRs) to inhibit OS metastasis in the future. In addition, some studies have shown that miRNAs are associated with the most important drug resistance mechanisms in OS, and some miRNAs are highly effective targets to increase chemosensitivity. The results of these studies suggest that miRNA mimics and antagomiRs may be helpful to increase the efficacy of conventional chemotherapy drugs in the treatment of metastatic OS. In this article, we discussed the role of various signaling pathways and the involved miRNAs in the metastasis of OS, attempting to provide a comprehensive review of the literature on OS metastasis and chemosensitivity.
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Sadoughi F, Maleki Dana P, Asemi Z, Yousefi B. DNA damage response and repair in osteosarcoma: Defects, regulation and therapeutic implications. DNA Repair (Amst) 2021; 102:103105. [PMID: 33836418 DOI: 10.1016/j.dnarep.2021.103105] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 03/20/2021] [Indexed: 01/03/2023]
Abstract
Osteosarcoma (OS) is the most common primary bone malignancy in children and adolescents which has the survival rate of 20% in its advanced stages. Osteosarcomas are mostly resistance to our common treatments. DNA damage response (DDR) is a specialized multistep process containing abundant proteins which are necessary for the survival of any cell and organism. DDR machinery detects a diversity of DNA lesions and inhibits the cell cycle progression if these lesions are not repairable. DDR is involved in aging, age-related diseases, and cancer. In recent years, DDR inhibitors have gained the attention of researches due to their potentials in offering novel therapeutic targets and improving the response of many cancers to either chemo- or radio-therapy. In this regard, we tried to gather a great body of evidence about the role of DDR ingredients in osteosarcoma's initiation/progression, prognosis, and treatment.
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Affiliation(s)
- Fatemeh Sadoughi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Parisa Maleki Dana
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| | - Bahman Yousefi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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Malfatti MC, Antoniali G, Codrich M, Burra S, Mangiapane G, Dalla E, Tell G. New perspectives in cancer biology from a study of canonical and non-canonical functions of base excision repair proteins with a focus on early steps. Mutagenesis 2021; 35:129-149. [PMID: 31858150 DOI: 10.1093/mutage/gez051] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 12/05/2019] [Indexed: 12/15/2022] Open
Abstract
Alterations of DNA repair enzymes and consequential triggering of aberrant DNA damage response (DDR) pathways are thought to play a pivotal role in genomic instabilities associated with cancer development, and are further thought to be important predictive biomarkers for therapy using the synthetic lethality paradigm. However, novel unpredicted perspectives are emerging from the identification of several non-canonical roles of DNA repair enzymes, particularly in gene expression regulation, by different molecular mechanisms, such as (i) non-coding RNA regulation of tumour suppressors, (ii) epigenetic and transcriptional regulation of genes involved in genotoxic responses and (iii) paracrine effects of secreted DNA repair enzymes triggering the cell senescence phenotype. The base excision repair (BER) pathway, canonically involved in the repair of non-distorting DNA lesions generated by oxidative stress, ionising radiation, alkylation damage and spontaneous or enzymatic deamination of nucleotide bases, represents a paradigm for the multifaceted roles of complex DDR in human cells. This review will focus on what is known about the canonical and non-canonical functions of BER enzymes related to cancer development, highlighting novel opportunities to understand the biology of cancer and representing future perspectives for designing new anticancer strategies. We will specifically focus on APE1 as an example of a pleiotropic and multifunctional BER protein.
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Affiliation(s)
- Matilde Clarissa Malfatti
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Giulia Antoniali
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Marta Codrich
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Silvia Burra
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Giovanna Mangiapane
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Emiliano Dalla
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
| | - Gianluca Tell
- Laboratory of Molecular Biology and DNA repair, Department of Medicine (DAME), University of Udine, Udine, Italy
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Lei Y, Junxin C, Yongcan H, Xiaoguang L, Binsheng Y. Role of microRNAs in the crosstalk between osteosarcoma cells and the tumour microenvironment. J Bone Oncol 2020; 25:100322. [PMID: 33083216 PMCID: PMC7554654 DOI: 10.1016/j.jbo.2020.100322] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 12/16/2022] Open
Abstract
Osteosarcoma (OS) is the most common primary bone tumour, with a peak incidence in adolescents, and the five-year survival rate of patients with metastasis or recurrence is much lower than that of patients without metastasis and recurrence. OS is initiated and develops in a complex tumour microenvironment (TME) that contains many different components, such as osteoblasts, osteoclasts, mesenchymal stem cells, fibroblasts, immune cells, extracellular matrix (ECM), extracellular vesicles, and cytokines. The extensive interaction between OS and the TME underlies OS progression. Therefore, rather than targeting OS cells, targeting the key factors in the TME may yield novel therapeutic approaches. MicroRNAs (miRNAs) play multiple roles in the biological behaviours of OS, and recent studies have implied that miRNAs are involved in mediating the communication between OS cells and the surrounding TME. Here, we review the TME landscape and the miRNA dysregulation of OS, describe the role of the altered TME in OS development and highlight the role of miRNA in the crosstalk between OS cells and the TME.
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Affiliation(s)
- Yong Lei
- Shenzhen Key Laboratory of Spine Surgery, Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Chen Junxin
- Shenzhen Key Laboratory of Spine Surgery, Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Huang Yongcan
- Shenzhen Key Laboratory of Spine Surgery, Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Liu Xiaoguang
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - Yu Binsheng
- Shenzhen Key Laboratory of Spine Surgery, Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
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Lu MD, Liu D, Li YX. LINC01436 Promotes the Progression of Gastric Cancer via Regulating miR-513a-5p/APE1 Axis. Onco Targets Ther 2020; 13:10607-10619. [PMID: 33116638 PMCID: PMC7585552 DOI: 10.2147/ott.s257747] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 09/19/2020] [Indexed: 12/21/2022] Open
Abstract
Background Gastric cancer (GC) is one of the deadliest cancer worldwide. Multiple long non-coding RNAs (lncRNAs) are recently identified as crucial oncogenic factors or tumor suppressors in GC. In this study, we aimed to probe into the effect of LINC01436 on GC progression. Methods LINC01436 and miR-513a-5p expressions in GC tissue samples were measured using quantitative real-time polymerase chain reaction (qRT-PCR). Western blot was used to detect the expression of apurinic/apyrimidinic endodeoxyribonuclease 1 (APE1) expression. Human GC cell lines AGS and BGC-823 were employed to investigate the function and mechanism of LINC01436 in GC. Cell counting kit-8 (CCK-8) assay was used to assess the effect of LINC01436 on proliferation. Flow cytometry was utilized to explore the effect of LINC01436 on apoptosis, and Transwell assay was conducted to detect the effect of LINC01436 on the migration and invasion. Colony formation assay was performed to evaluate the effect of LINC01436 on radioresistance of GC cells. Furthermore, luciferase reporter assay and RNA immunoprecipitation assay were conducted to confirm the binding relationship between miR-513a-5p and LINC01436. Additionally, Western blot was used to study the regulatory function of LINC01436 and miR-513a-5p on APE1. Results LINC01436 expression of GC clinical samples was remarkably increased and LINC01436 was correlated with unfavorable pathological indexes. LINC01436 high expression was associated with shorter overall survival time. Its overexpression observably promoted the proliferation, metastasis and radioresistance of GC cells, and its knockdown suppressed the malignant phenotypes of GC cells. LINC01436 overexpression markedly reduced the miR-513a-5p expression via sponging it and enhanced the APE1 expression. MiR-513a-5p overexpression or APE1 knockdown reversed the effects of LINC01436 on GC cells. Conclusion LINC01436 is a molecular sponge of tumor suppressor miR-513a-5p, which indirectly enhances the APE1 expression and functions as the oncogenic lncRNA in GC.
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Affiliation(s)
- Ming-Dian Lu
- Department of Gastrointestinal Surgery and General Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, People's Republic of China
| | - Dong Liu
- Department of Gastrointestinal Surgery and General Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, People's Republic of China
| | - Yong-Xiang Li
- Department of Gastrointestinal Surgery and General Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, People's Republic of China
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11
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Zhang TR, Huang WQ. Angiogenic circular RNAs: A new landscape in cardiovascular diseases. Microvasc Res 2020; 129:103983. [DOI: 10.1016/j.mvr.2020.103983] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 01/08/2020] [Accepted: 01/13/2020] [Indexed: 12/18/2022]
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12
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Lin W, Miao Y, Meng X, Huang Y, Zhao W, Ruan J. miRNA-765 mediates multidrug resistance via targeting BATF2 in gastric cancer cells. FEBS Open Bio 2020; 10:1021-1030. [PMID: 32166887 PMCID: PMC7262883 DOI: 10.1002/2211-5463.12838] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 02/17/2020] [Accepted: 03/11/2020] [Indexed: 12/13/2022] Open
Abstract
Elucidation of the mechanisms underlying multidrug resistance (MDR) is required to ensure the efficacy of chemotherapy against gastric cancer (GC). To investigate this issue, here we identified that microRNA-765 (miRNA-765) is up-regulated both in MDR GC cell lines and in specimens from patients who are not responding to chemotherapy. In addition, down-regulation of miRNA-765 increased the sensitivity of GC cells to anticancer drugs, whereas its overexpression had the opposite effect. Moreover, miRNA-765 suppressed drug-induced apoptosis and positively regulated the expression of MDR-related genes. Finally, we showed that the basic leucine zipper ATF-like transcription factor 2, a tumor suppressor gene, is the functional target of miRNA-765. In summary, these results suggest that miRNA-765 may promote MDR via basic leucine zipper ATF-like transcription factor 2 in GC cells.
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Affiliation(s)
- Wan Lin
- Department of Gastroenterology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Yu Miao
- Department of Gastroenterology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Xiangkun Meng
- Department of Gastroenterology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Ying Huang
- Department of Gastroenterology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Wanli Zhao
- Department of Anesthesiology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Jigang Ruan
- Department of Gastroenterology, General Hospital of Ningxia Medical University, Yinchuan, China
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Zhu H, Yang J, Yang S. MicroRNA-103a-3p potentiates chemoresistance to cisplatin in non-small cell lung carcinoma by targeting neurofibromatosis 1. Exp Ther Med 2020; 19:1797-1805. [PMID: 32104235 PMCID: PMC7027123 DOI: 10.3892/etm.2020.8418] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 07/05/2019] [Indexed: 12/22/2022] Open
Abstract
Lung cancer remains the leading cause of cancer-associated mortality worldwide, and non-small-cell lung cancer (NSCLC) contributes to ~80% of these deaths. However, both primary and acquired cisplatin resistance frequently occurs within the disease and represents a huge clinical treatment problem. The underlying molecular mechanisms are not yet completely understood, but in recent years, microRNAs (miR) have been reported to play vital roles in the development of lung cancer and chemoresistance. In the present study, it was revealed that there were increased expression levels of miR-103a-3p in both NSCLC cell lines and human NSCLC samples that exhibited resistance to cisplatin. The results also revealed that the inhibition of miR-103a-3p in A549/cisplatin cells significantly sensitized these cells to cisplatin, while inhibition of miR-103a-3p expression inhibited tumor growth and enhanced the function of cisplatin in a xenograft animal model. Furthermore, the present study demonstrated that miR-103a-3p regulates cisplatin resistance by targeting neurofibromatosis 1 (NF1) via activating ERK signaling in vitro and in vivo. In conclusion, NF1 was identified as a special miR-103a-3p target in the present study, and it was revealed that targeting NF1 via miR-103a-3p may help reverse chemoresistance and provide a biomarker to cisplatin responsiveness in NSCLC.
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Affiliation(s)
- Hongge Zhu
- Department of Second Pulmonary Medicine, The Third Hospital Affiliated of Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Jie Yang
- Department of Video Center, The Third Hospital Affiliated of Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Shun'e Yang
- Department of Lymphoma and Breast Cancer Internal Medicine, The Third Hospital Affiliated of Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
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14
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MiR-765 functions as a tumour suppressor and eliminates lipids in clear cell renal cell carcinoma by downregulating PLP2. EBioMedicine 2020; 51:102622. [PMID: 31901870 PMCID: PMC6948168 DOI: 10.1016/j.ebiom.2019.102622] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 12/18/2022] Open
Abstract
Background Lipid accumulation has been highlighted in cancer development and progression, but the exact mechanism remains unclear in renal cell carcinoma (RCC). MicroRNAs (miRNAs) have been confirmed to participate in the pathological processes of cancers, including tumour occurrence and inhibition. However, the role and mechanism of miR-765 have not been elucidated in clear cell renal cell carcinoma (ccRCC). Methods Using The Cancer Genome Atlas (TCGA) database and qRT-PCR, we investigated differences in miR-765 and proteolipid protein 2 (PLP2) expression, as well as their clinical relevance. To investigate the function of miR-765 and PLP2 in ccRCC, we performed in vitro and in vivo experiments to explore their biological functions in ccRCC. Findings In this study, we showed that miR-765 was upregulated in the plasma of ccRCC patients after tumour resection. Consistently, ccRCC tissues had low expression of miR-765 when compared with corresponding non-cancerous tissues. Overexpression of miR-765 suppressed cell proliferation and metastasis in vitro and in vivo. Mechanistic studies demonstrated that PLP2 was a direct target gene of miR-765. PLP2 was highly expressed in ccRCC tissues, and high PLP2 levels were positively correlated with higher tumour stage and grade and poor prognosis. PLP2 expression was negatively correlated with the miR-765 level in patient samples. We further showed that PLP2 restrained the cell metastasis and proliferation induced by miR-765 and reduced the lipid-eliminating effects of miR-765 in renal cancer cells. Interpretation Our findings suggest that miR-765 may function as a tumour suppressor and eliminate lipids in clear cell renal cell carcinoma by targeting PLP2. Funding This work was funded the grants from the National Natural Scientific Foundation of China (Grant No. 81672528, 81672524, 81602218, 31741032, 81902588).
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15
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Gong Y, Dai HS, Shu JJ, Liu W, Bie P, Zhang LD. LNC00673 suppresses proliferation and metastasis of pancreatic cancer via target miR-504/ HNF1A. J Cancer 2020; 11:940-948. [PMID: 31949497 PMCID: PMC6959011 DOI: 10.7150/jca.32855] [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: 01/06/2019] [Accepted: 09/22/2019] [Indexed: 12/26/2022] Open
Abstract
Pancreatic cancer is a highly invasive malignant tumor of the digestive system. To explore the mechanism of pancreatic cancer development, development, invasion and metastasis, in this study we focused on long non-coding RNA (LncRNA), which has been reported to be involved in tumorigenesis. We identified a LINC00673, which is highly correlated with the pancreatic cancer risk. LINC00673 Overexpression is associated with good survival in pancreatic cancer patients, Effects of LINC00673 on pancreatic cancer cell apoptosis, viability, migration. LINC00673 negatively correlated with miR-504 and MiR-504 overexpression promoted cancer progression in Pancreatic cancer. MiR-504 negatively correlated with HNF1A, which was highly expressed Pancreatic cancer. HNF1A inhibited cell progression in pancreatic cancer cells. LINC00673 overexpression inhibited caner progression in nude mice. Taken together, LINC00673 can through suppress miR-504/ HNF1A regulating invasion and migration in pancreatic cancer. Also, we identified miR-504 as a target of LINC00673 in pancreatic cancer and LINC00673 can be used as a novel therapeutic target for the pancreatic cancer.
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Affiliation(s)
- Yi Gong
- Department of Hepatobiliary Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China
| | - Hai-Su Dai
- Department of Hepatobiliary Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China
| | - Jun-Jie Shu
- Department of Hepatobiliary Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China
| | - Wei Liu
- Department of Hepatobiliary Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China
| | - Ping Bie
- Department of Hepatobiliary Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China
| | - Lei-da Zhang
- Department of Hepatobiliary Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China
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16
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Matsui T, Chiyo T, Kobara H, Fujihara S, Fujita K, Namima D, Nakahara M, Kobayashi N, Nishiyama N, Yachida T, Morishita A, Iwama H, Masaki T. Telmisartan Inhibits Cell Proliferation and Tumor Growth of Esophageal Squamous Cell Carcinoma by Inducing S-Phase Arrest In Vitro and In Vivo. Int J Mol Sci 2019; 20:ijms20133197. [PMID: 31261874 PMCID: PMC6651359 DOI: 10.3390/ijms20133197] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 12/24/2022] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is the most common primary esophageal malignancy. Telmisartan, an angiotensin II type 1 (AT1) receptor blocker (ARB) and a widely used antihypertensive, has been shown to inhibit proliferation of various cancer types. This study evaluated the effects of telmisartan on human ESCC cell proliferation in vitro and in vivo and sought to identify the microRNAs (miRNAs) involved in these antitumor effects. We examined the effects of telmisartan on three human ESCC cell lines (KYSE150, KYSE180, and KYSE850). Telmisartan inhibited proliferation of these three cell lines by inducing S-phase arrest, which was accompanied by decreased expression of cyclin A2, cyclin-dependent kinase 2, and other cell cycle-related proteins. Additionally, telmisartan reduced levels of phosphorylated ErbB3 and thrombospondin-1 in KYSE180 cells. Furthermore, expression of miRNAs was remarkably altered by telmisartan in vitro. Telmisartan also inhibited tumor growth in vivo in a xenograft mouse model. In conclusion, telmisartan inhibited cell proliferation and tumor growth in ESCC cells by inducing cell-cycle arrest.
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Affiliation(s)
- Takanori Matsui
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Taiga Chiyo
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Hideki Kobara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Shintaro Fujihara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Koji Fujita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Daisuke Namima
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Mai Nakahara
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Nobuya Kobayashi
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Noriko Nishiyama
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Tatsuo Yachida
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan
| | - Hisakazu Iwama
- Life Science Research Center, Kagawa University, Kagawa 761-0793, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Kagawa University, Kagawa 761-0793, Japan.
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Salinas-Vera YM, Gallardo-Rincón D, García-Vázquez R, Hernández-de la Cruz ON, Marchat LA, González-Barrios JA, Ruíz-García E, Vázquez-Calzada C, Contreras-Sanzón E, Resendiz-Hernández M, Astudillo-de la Vega H, Cruz-Colin JL, Campos-Parra AD, López-Camarillo C. HypoxamiRs Profiling Identify miR-765 as a Regulator of the Early Stages of Vasculogenic Mimicry in SKOV3 Ovarian Cancer Cells. Front Oncol 2019; 9:381. [PMID: 31157166 PMCID: PMC6528691 DOI: 10.3389/fonc.2019.00381] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/23/2019] [Indexed: 12/12/2022] Open
Abstract
Vasculogenic mimicry (VM) is a novel cancer hallmark in which malignant cells develop matrix-associated 3D tubular networks with a lumen under hypoxia to supply nutrients needed for tumor growth. Recent studies showed that microRNAs (miRNAs) may have a role in VM regulation. In this study, we examined the relevance of hypoxia-regulated miRNAs (hypoxamiRs) in the early stages of VM formation. Data showed that after 48 h hypoxia and 12 h incubation on matrigel SKOV3 ovarian cancer cells undergo the formation of matrix-associated intercellular connections referred hereafter as 3D channels-like structures, which arose previous to the apparition of canonical tubular structures representative of VM. Comprehensive profiling of 754 mature miRNAs at the onset of hypoxia-induced 3D channels-like structures showed that 11 hypoxamiRs were modulated (FC>1.5; p < 0.05) in SKOV3 cells (9 downregulated and 2 upregulated). Bioinformatic analysis of the set of regulated miRNAs showed that they might impact cellular pathways related with tumorigenesis. Moreover, overall survival analysis in a cohort of ovarian cancer patients (n = 485) indicated that low miR-765, miR-193b, miR-148a and high miR-138 levels were associated with worst patients outcome. In particular, miR-765 was severely downregulated after hypoxia (FC < 32.02; p < 0.05), and predicted to target a number of protein-encoding genes involved in angiogenesis and VM. Functional assays showed that ectopic restoration of miR-765 in SKOV3 cells resulted in a significant inhibition of hypoxia-induced 3D channels-like formation that was associated with a reduced number of branch points and patterned tubular-like structures. Mechanistic studies confirmed that miR-765 decreased the levels of VEGFA, AKT1 and SRC-α transducers and exerted a negative regulation of VEGFA by specific binding to its 3'UTR. Finally, overall survival analysis of a cohort of ovarian cancer patients (n = 1435) indicates that high levels of VEGFA, AKT1 and SRC-α and low miR-765 expression were associated with worst patients outcome. In conclusion, here we reported a novel hypoxamiRs signature which constitutes a molecular guide for further clinical and functional studies on the early stages of VM. Our data also suggested that miR-765 coordinates the formation of 3D channels-like structures through modulation of VEGFA/AKT1/SRC-α axis in SKOV3 ovarian cancer cells.
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Affiliation(s)
- Yarely M. Salinas-Vera
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de Mexico, Mexico City, Mexico
| | - Dolores Gallardo-Rincón
- Laboratorio de Medicina Translacional y Departamento de Tumores Gastro-Intestinales, Instituto Nacional de Cancerología, Mexico City, Mexico
| | - Raúl García-Vázquez
- Programa en Biomedicina Molecular y Red de Biotecnología, Instituto Politécnico Nacional, Mexico City, Mexico
| | | | - Laurence A. Marchat
- Programa en Biomedicina Molecular y Red de Biotecnología, Instituto Politécnico Nacional, Mexico City, Mexico
| | | | - Erika Ruíz-García
- Laboratorio de Medicina Translacional y Departamento de Tumores Gastro-Intestinales, Instituto Nacional de Cancerología, Mexico City, Mexico
| | | | | | | | - Horacio Astudillo-de la Vega
- Laboratorio de Investigación Translacional en Cáncer y Terapia Celular, Hospital de Oncología, Centro Médico Nacional Siglo XXI, Mexico City, Mexico
| | - José L. Cruz-Colin
- Subdirección de Investigación Básica, Instituto Nacional de Medicina Genómica, Mexico City, Mexico
| | - Alma D. Campos-Parra
- Laboratorio de Genómica, Instituto Nacional de Cancerología, Mexico City, Mexico
| | - César López-Camarillo
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de Mexico, Mexico City, Mexico
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18
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Yan L, Wu X, Liu Y, Xian W. LncRNA Linc00511 promotes osteosarcoma cell proliferation and migration through sponging miR-765. J Cell Biochem 2019; 120:7248-7256. [PMID: 30592325 DOI: 10.1002/jcb.27999] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 10/08/2018] [Indexed: 01/24/2023]
Abstract
Long noncoding RNA (lncRNA) Linc00511 is a novel lncRNA, and it was reported to play important roles in the progression and carcinogenesis of several tumors. However, the expression and biological roles of Linc00511 in osteosarcoma were still unknown. In this research, we showed that the expression of Linc00511 was upregulated in osteosarcoma samples and cell lines. Ectopic expression of Linc00511 promoted osteosarcoma cell growth, colony formation, and migration. Moreover, overexpression of Linc00511 enhanced the epithelial-mesenchymal transition progression in osteosarcoma cell. In addition, we showed that elevated expression of Linc00511 suppressed microRNA-765 (miR-765) expression and promoted apurinic/apyrimidinic endonuclease 1 (APE1) expression in osteosarcoma cell. The expression of miR-765 was downregulated in osteosarcoma cells and samples and was negatively related to Linc00511 expression in osteosarcoma tissues. Ectopic expression of miR-765 inhibited osteosarcoma cell growth and migration. Furthermore, we showed that Linc00511 overexpression promoted MG-63 cells proliferation, colony formation, and migration via downregulation of miR-765. These results suggested that Linc00511 played as an oncogene in the development of osteosarcoma.
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Affiliation(s)
- Lihua Yan
- Department of Medical Oncology, Nanyang Second People's Hospital, Nanyang, Henan, China
| | - Xiangkun Wu
- Department of Orthopaedic Surgery, Nanyang Second People's Hospital, Nanyang, Henan, China
| | - Yongxi Liu
- Department of Orthopaedic Surgery, Nanyang Second People's Hospital, Nanyang, Henan, China
| | - Wenfeng Xian
- Department of Orthopaedic Surgery, Nanyang Second People's Hospital, Nanyang, Henan, China
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19
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Long S, Long S, He H, Chen G. MicroRNA-765 is pregulated in multiple myeloma and serves an oncogenic role by directly targeting SOX6. Exp Ther Med 2019; 17:4741-4747. [PMID: 31105792 DOI: 10.3892/etm.2019.7473] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 03/15/2019] [Indexed: 12/12/2022] Open
Abstract
Increasing evidence has revealed that microRNAs (miRNAs) are closely associated with multiple myeloma (MM) pathogenesis and progression. Therefore, an in-depth understanding of the biological functions of miRNAs in MM may be helpful for the identification of promising therapeutic techniques for patients with MM. miRNA-765 (miR-765) has been reported to be dysregulated in many types of human cancer. However, the expression pattern, specific roles and underlying mechanisms of miR-765 in MM remain largely unknown. In the present study, plasma miR-765 significantly increased in patients with MM and cell lines. The downregulation of miR-765 in MM cells attenuated proliferation and promoted apoptosis. Bioinformatics analysis predicted that SRY-Box 6 (SOX6) was a putative target of miR-765. This was experimentally verified using a luciferase reporter assay, reverse transcription-quantitative PCR and western blot analysis. Furthermore, plasma SOX6 was downregulated in patients with MM and the downregulation of SOX6 was inversely correlated with that of miR-765 expression. Furthermore, SOX6 knockdown markedly abrogated the effects of miR-765 underexpression on cell proliferation and apoptosis in MM. The current study demonstrated that miR-765 serves an oncogenic role in MM progression by directly targeting SOX6, suggesting that miR-765 may be a potential therapeutic target for MM prevention and treatment.
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Affiliation(s)
- Shifeng Long
- Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China.,Department of Hematology, The Affiliated Hospital of Jinggangshan University, Ji'an, Jiangxi 343000, P.R. China
| | - Shengping Long
- Department of Hematology, The Affiliated Hospital of Jinggangshan University, Ji'an, Jiangxi 343000, P.R. China
| | - Honglei He
- Department of Hematology, The Affiliated Hospital of Jinggangshan University, Ji'an, Jiangxi 343000, P.R. China
| | - Guoan Chen
- Department of Hematology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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20
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Li YS, Liu Q, Tian J, He HB, Luo W. Angiogenesis Process in Osteosarcoma: An Updated Perspective of Pathophysiology and Therapeutics. Am J Med Sci 2019; 357:280-288. [DOI: 10.1016/j.amjms.2018.12.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 11/23/2018] [Accepted: 12/11/2018] [Indexed: 12/13/2022]
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21
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Zhu X, Niu X, Ge C. Inhibition of LINC00994 represses malignant behaviors of pancreatic cancer cells: interacting with miR-765-3p/RUNX2 axis. Cancer Biol Ther 2019; 20:799-811. [PMID: 30739523 DOI: 10.1080/15384047.2018.1564566] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Pancreatic cancer exhibits one of the worst prognosis of all human cancers, and it is associated with gene dysregulation. Our microarray results first indicated long intergenic non-protein coding RNA 994 (LINC00994) as an upregulated long non-coding RNA (lncRNA) and miR-765-3p as a downregulated microRNA (miRNA) in pancreatic cancer tissues (Fold change ≥ 2 and P < 0.05; three paired samples). To investigate the role of LINC00994 in pancreatic carcinogenesis, a pair of short hairpin RNA (shRNA) was used to stably knock down the endogenous expression of LINC00994 in Panc-1 and AsPC-1 pancreatic cancer cells in vitro. We found that LINC00994 silencing inhibited the growth, migration and invasion, and promoted the G1 cell cycle arrest and apoptosis in Panc-1 and AsPC-1 cells. Furthermore, the expression of LINC00994 was negatively correlated with that of miR-765-3p in 10 pancreatic cancer specimens. Runt-related transcription factor 2 (RUNX2), a molecule that contributes to the aggressive behaviors of pancreatic cancer, was herein verified as a novel target for miR-765-3p. Like LINC00994, its expression was elevated in pancreatic cancers. Silencing of LINC00994 and RUNX2 reduced each other's expression in both Panc-1 and AsPC-1 cells. RUNX2 3'UTR and LINC00994 competed to bind miR-765-3p. Additionally, LINC00994-silenced cells regained their aggressive behaviors when miR-765-3p was antagonized, which was accompanied with RUNX2 re-expression. Collectively, our study reveals that LINC00994 contributes to the malignant behaviors of pancreatic cancer cells by preventing miR-765-3p from targeting RUNX2. LINC00994 can be considered as a novel therapeutic target against pancreatic cancer.
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Affiliation(s)
- Xuan Zhu
- a Department of Pancreatic and Biliary Surgery , The First Affiliated Hospital of China Medical University , Shenyang , Liaoning , China.,b Department of General Surgery, Anshan Hospital , The First Affiliated Hospital of China Medical University , Anshan , Liaoning , China
| | - Xing Niu
- c The Second Clinical Medical School , China Medical University , Shenyang , Liaoning , China
| | - Chunlin Ge
- a Department of Pancreatic and Biliary Surgery , The First Affiliated Hospital of China Medical University , Shenyang , Liaoning , China
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22
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Chan KL, Peng B, Umar MI, Chan CY, Sahakyan AB, Le MTN, Kwok CK. Structural analysis reveals the formation and role of RNA G-quadruplex structures in human mature microRNAs. Chem Commun (Camb) 2018; 54:10878-10881. [PMID: 30204160 DOI: 10.1039/c8cc04635b] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Here we identify hundreds of RNA G-quadruplex (rG4) candidates in microRNAs (miRNAs), characterize the miRNA structure and miRNA-mRNA interactions on several mammalian-conserved miRNAs, and reveal the formation of rG4s in miRNAs. Notably, we study the effect of these rG4s in cells and uncover the role of rG4s in miRNA-mediated post-transcriptional regulation.
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Affiliation(s)
- Ka Lung Chan
- Department of Chemistry, City University of Hong Kong, Kowloon Tong, Hong Kong SAR, China.
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