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Zhang J, Cao Z, Yang G, You L, Zhang T, Zhao Y. MicroRNA-27a (miR-27a) in Solid Tumors: A Review Based on Mechanisms and Clinical Observations. Front Oncol 2019; 9:893. [PMID: 31572683 PMCID: PMC6751266 DOI: 10.3389/fonc.2019.00893] [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: 07/11/2019] [Accepted: 08/27/2019] [Indexed: 12/11/2022] Open
Abstract
MicroRNAs (miRNAs) are a family of highly conserved, non-coding single-stranded RNAs transcribed as ~70 nucleotide precursors to an 18–22 nucleotide product (1). miRNAs can silence their homologous target genes at the post-transcriptional level, and these genes have been revealed to play an important role in tumorigenesis, invasion and metastasis (2). MicroRNA-27a (miR-27a), transcripted by miR-27a gene, has proved to implicate with many kinds of solid tumors, showing potential as a useful biomarker or drug target for clinical application. However, even though miR-27a has been reported in many cancers, the mechanism and signal pathways of miR-27 in oncogenesis, invasion, and metastasis are still obscure. Moreover, recent studies show that miR-27a pays an important role in epithelial-mesenchymal-transition, regulating tumor immune response, and chemoresistance. In this review, we summarize the current literature, demonstrate the established link between miR-27a and tumorigenesis, and focus on recently identified mechanisms. The review also aims to demonstrate the potential of miR-27a as a diagnostic and/or prognostic biomarker in solid tumors and to discuss the possibilities of targeted therapy and drug design.
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Affiliation(s)
- Jingcheng Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhe Cao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Gang Yang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lei You
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Taiping Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Clinical Immunology Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yupei Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Farrokhi F, Karami Z, Esmaeili-Mahani S, Heydari A. Delivery of DNAzyme targeting c-Myc gene using β-cyclodextrin polymer nanocarrier for therapeutic application in human breast cancer cell line. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.08.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Therapeutic Potential of DNAzyme Loaded on Chitosan/Cyclodextrin Nanoparticle to Recovery of Chemosensitivity in the MCF-7 Cell Line. Appl Biochem Biotechnol 2018; 187:708-723. [PMID: 30039475 DOI: 10.1007/s12010-018-2836-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 07/02/2018] [Indexed: 12/19/2022]
Abstract
Commonly, acquired resistances to anticancer drug are mediated by overexpression of a membrane-associated protein that encode via multi-drug resistance gene-1 (MDR1). Herein, the mRNA-cleaving DNAzyme that targets the mRNA of MDR1 gene in doxorubicin-resistant breast cancer cell line (MCF-7/DR) loaded on the chitosan β-cyclodextrin complexes was used as a tropical agent. Chitosan/β-cyclodextrin complexes were used to deliver DNAzymes into cancer cells. Determination of the physicochemical characteristics of the particles was done by photon correlation spectroscopy and scanning electron microscopy. The encapsulation efficiency of the complexes was tested by using gel retardation assay. Positively charged nanoparticles interacted with DNAzyme that could perform as an efficient DNAzyme transfection system. The rationale usage of this platform is to sensitize MCF-7/DR to doxorubicin by downregulating the drug-resistance gene MDR1. Results demonstrated a downregulation of MDR1 mRNAs in MCF-7/DR/DNZ by real-time PCR, compared to the MCF-7/DR as control. WST1 assay showed the 22-fold decrease in drug resistance on treated cells 24 h after transfection. Results showed the intracellular accumulation of Rh123 increased in the treated cells with DNAzyme. Results suggested a potential platform in association with chemotherapy drug for cancer therapy and indicated extremely efficient at delivery of DNAzyme in restoring chemosensitivity.
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Zhang K, Wang YW, Wang YY, Song Y, Zhu J, Si PC, Ma R. Identification of microRNA biomarkers in the blood of breast cancer patients based on microRNA profiling. Gene 2017; 619:10-20. [PMID: 28359916 DOI: 10.1016/j.gene.2017.03.038] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 02/22/2017] [Accepted: 03/25/2017] [Indexed: 12/14/2022]
Abstract
Accumulating evidence indicates that human circulating microRNAs (miRNAs) could serve as diagnostic and prognostic biomarkers in various cancers. We aimed to explore novel miRNA biomarkers in the blood of breast cancer patients based on miRNA profiling. A miRCURY™ LNA Array was used to identify differentially altered miRNAs in the whole blood of breast cancer patients (n=6) and healthy controls (n=6). Levels of candidate miRNAs were quantified by quantitative reverse transcription-polymerase chain reaction (qRT-PCR) in whole blood specimens of 15 breast cancer patients and 13 age-matched healthy control individuals. The miRWalk database was used to predict miRNA targets and the DAVID tool was used to identify significant enrichment pathways. A total of 171 differentially expressed miRNAs were identified by microarray, including 169 upregulated and 2 downregulated miRNAs in breast cancer. Five upregulated miRNAs (miR-30b-5p, miR-96-5p, miR-182-5p, miR-374b-5p, and miR-942-5p) were confirmed by qRT-PCR. The areas under the receiver operating characteristic curve of miR-30b-5p, miR-96-5p, miR-182-5p, miR-374b-5p, and miR-942-5p were 0.9333, 0.7692, 0.7590, 0.8256, and 0.8128, respectively. Importantly, upregulation of these five miRNAs was observed even in patients with very early-stage breast cancer. A total of 855 genes were predicted to be targeted by the five miRNAs, and the one cut domain family member 2 gene (ONECUT2) was a shared target of the five miRNAs. Analysis of publicly available data revealed that these dysregulated miRNAs and the target genes were associated with the survival of breast cancer patients. Furthermore, the five miRNAs were significantly enriched in numerous cancer-related pathways, including "MicroRNAs in cancer", "Pathways in cancer", "FoxO signaling pathway", "Ras signaling pathway", "Rap1 signaling pathway", "MAPK signaling pathway", and "PI3K-Akt signaling pathway". Our data support the potential of the five identified miRNAs as novel biomarkers for the detection of breast cancer, and indicate that they may be involved in breast cancer development and progression.
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Affiliation(s)
- Kai Zhang
- Department of Breast Surgery, Qilu Hospital of Shandong University, 107 West Wenhua Road, Jinan 250012, Shandong, People's Republic of China
| | - Ya-Wen Wang
- Department of Breast Surgery, Qilu Hospital of Shandong University, 107 West Wenhua Road, Jinan 250012, Shandong, People's Republic of China
| | - Yan-Yan Wang
- Health Examination Center, Qilu Hospital of Shandong University, 107 West Wenhua Road, Jinan 250012, Shandong, People's Republic of China
| | - Yu Song
- Department of Breast Surgery, Qilu Hospital of Shandong University, 107 West Wenhua Road, Jinan 250012, Shandong, People's Republic of China
| | - Jiang Zhu
- Department of Breast Surgery, Qilu Hospital of Shandong University, 107 West Wenhua Road, Jinan 250012, Shandong, People's Republic of China
| | - Peng-Chao Si
- Key Laboratory for Liqeuid-Solid Structural Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, People's Republic of China
| | - Rong Ma
- Department of Breast Surgery, Qilu Hospital of Shandong University, 107 West Wenhua Road, Jinan 250012, Shandong, People's Republic of China.
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Shao G, Ji S, Wu A, Liu C, Wang M, Zhang P, Jiao Q, Kang Y. DNAzyme-based probe for circulating microRNA detection in peripheral blood. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:6109-17. [PMID: 26604698 PMCID: PMC4655907 DOI: 10.2147/dddt.s89560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND The recent discovery of microRNAs (miRNAs) and their extracellular presence suggest a potential role of these regulatory molecules in defining the metastatic potential of cancer cells and mediating the cancer-host communication. This study aims to improve the sensitivity of miRNA detection via DNAzyme-based method and enhance the selectivity by using the DNAzyme-based probe to reduce nonspecific amplification. METHODS The miRNA probes were chemically synthesized with a phosphate at the 5' end and purified by polyacrylamide gel electrophoresis. Exosomal RNA from peripheral blood was isolated. Carboxylated magnetic microsphere beads (MBs) were functionalized with streptavidin (SA) according to a previously reported method with some modification. T capture probe-coated SA-MBs (DNA-MBs) were also prepared. The fluorescent spectra were measured using a spectrofluorophotometer. RESULTS We designed an incomplete DNAzyme probe with two stems and one bubble structure as a recognition element for the specific detection of miRNA with high sensitivity. The background effects were decreased with increase of the added of DNA-MBs and capturing times. Therefore, 20 minutes was selected as the optimal concentration in the current study. The fluorescence intensity increases as the hybridization time changed and reached a constant level at 40 minutes, and 1 μM is the optimum signal probe concentration for self-assembled DNA concatemers formation. In the presence of miRNA, the fluorescence of the solution increased with increasing miRNA concentration. There is no obvious fluorescence in the presence of 10 mM of other nontarget DNA. CONCLUSION A simple, rapid method with high performance has been constructed based on identified circulating miRNA signatures using miRNA-induced DNAzyme. This assay is simple, inexpensive, and sensitive, enabling quantitative detection of as low as 10 fM miRNA.
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Affiliation(s)
- Guoli Shao
- Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Shufeng Ji
- Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Aiguo Wu
- Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Cuiping Liu
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Mengchuan Wang
- Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Pusheng Zhang
- Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Qingli Jiao
- Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Yuzhan Kang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, People's Republic of China
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