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Salem SM, Hamed AR, Fayez AG, Nour Eldeen G. Non-target Genes Regulate miRNAs-Mediated Migration Steering of Colorectal Carcinoma. Pathol Oncol Res 2018; 25:559-566. [PMID: 30361904 DOI: 10.1007/s12253-018-0502-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 10/15/2018] [Indexed: 12/14/2022]
Abstract
MicroRNAs (miRNAs) trigger a two-layer regulatory network directly or through transcription factors and their co-regulators. Unlike miR-375, the role of miR-145 and miR-224 in inhibiting or driving cancer cell migration is controversial. This study is a step towards addressing the potential of miR-375, miR-145 and miR-224 expression modulation to inhibit colorectal carcinoma (CRC) cells migration in vitro through regulation of non-target genes VEGFA, TGFβ1, IGF1, CD105 and CD44. Transwell migration assay results revealed a significant subdue of migration ability of cells transfected with miR-375 and miR-145 mimics and miR-224 inhibitor. Real time PCR data showed that expression of VEGFA, TGFβ1, IGF1, CD105 and CD44 was downregulated as a consequence of exogenous re-expression of miR-375 and inhibition of miR-224. On the other hand, ectopic expression of miR-145 did not affect VEGFA, TGFβ1 and CD44 expression, while it elevated CD105 and suppressed IGF1 expression. MAP4K4, a predicted target of miR-145, was validated as a target that could play a role in miR-145-mediated regulation of migration. At mRNA level, no change was observed in expression of MAP4K4 in cells with restored expression of miR-145, while western blotting analysis revealed a 25% reduction of protein level. By applying luciferase reporter assay, a significant decrease in luciferase activity was observed, supporting that miR-145 directly target 3' UTR of MAP4K4. The study highlighted the involvement of non-target genes VEGFA, TGFβ1, IGF1, CD105 and CD44 in mediating anti- and pro-migratory effect of miR-375 and miR-224, respectively, and validated MAP4K4 as a direct target of anti-migratory miR-145.
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Affiliation(s)
- Sohair M Salem
- Molecular Genetics and Enzymology Department, National Research Centre, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt.
| | - Ahmed R Hamed
- Phytochemistry Department, National Research Centre, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt.,Biology Unit - Central Laboratory of Pharmaceutical and Drug Industries Research Division, National Research Centre, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt
| | - Alaaeldin G Fayez
- Molecular Genetics and Enzymology Department, National Research Centre, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt
| | - Ghada Nour Eldeen
- Molecular Genetics and Enzymology Department, National Research Centre, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt.,Stem Cell Research Unit, National Research Centre, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt
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52
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Circular RNA circAGO2 drives cancer progression through facilitating HuR-repressed functions of AGO2-miRNA complexes. Cell Death Differ 2018; 26:1346-1364. [PMID: 30341421 DOI: 10.1038/s41418-018-0220-6] [Citation(s) in RCA: 219] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/15/2018] [Accepted: 10/08/2018] [Indexed: 12/16/2022] Open
Abstract
Argonaute 2 (AGO2), the core component of microRNA (miRNA)-induced silencing complex, plays a compelling role in tumorigenesis and aggressiveness. However, the mechanisms regulating the functions of AGO2 in cancer still remain elusive. Herein, we indentify one intronic circular RNA (circRNA) generated from AGO2 gene (circAGO2) as a novel regulator of AGO2-miRNA complexes and cancer progression. CircAGO2 is up-regulated in gastric cancer, colon cancer, prostate cancer, and neuroblastoma, and is associated with poor prognosis of patients. CircAGO2 promotes the growth, invasion, and metastasis of cancer cells in vitro and in vivo. Mechanistic studies reveal that circAGO2 physically interacts with human antigen R (HuR) protein to facilitate its activation and enrichment on the 3'-untranslated region of target genes, resulting in reduction of AGO2 binding and repression of AGO2/miRNA-mediated gene silencing associated with cancer progression. Pre-clinically, administration of lentivirus-mediated short hairpin RNA targeting circAGO2 inhibits the expression of downstream target genes, and suppresses the tumorigenesis and aggressiveness of xenografts in nude mice. In addition, blocking the interaction between circAGO2 and HuR by cell-penetrating inhibitory peptide represses the tumorigenesis and aggressiveness of cancer cells. Taken together, these results indicate that oncogenic circAGO2 drives cancer progression through facilitating HuR-repressed functions of AGO2-miRNA complexes.
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Li D, Song H, Mei H, Fang E, Wang X, Yang F, Li H, Chen Y, Huang K, Zheng L, Tong Q. Armadillo repeat containing 12 promotes neuroblastoma progression through interaction with retinoblastoma binding protein 4. Nat Commun 2018; 9:2829. [PMID: 30026490 PMCID: PMC6053364 DOI: 10.1038/s41467-018-05286-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 06/25/2018] [Indexed: 12/18/2022] Open
Abstract
Recent studies suggest the emerging roles of armadillo (ARM) family proteins in tumor progression. However, the functions and underlying mechanisms of ARM members in tumorigenesis and aggressiveness of neuroblastoma (NB) remain to be determined. Herein, we identify armadillo repeat containing 12 (ARMC12) as an ARM member associated with NB progression. ARMC12 promotes the growth and aggressiveness of NB cell lines. Mechanistically, ARMC12 physically interacts with retinoblastoma binding protein 4 (RBBP4) to facilitate the formation and activity of polycomb repressive complex 2, resulting in transcriptional repression of tumor suppressive genes. Blocking the interaction between ARMC12 and RBBP4 by cell-penetrating inhibitory peptide activates the downstream gene expression and suppresses the tumorigenesis and aggressiveness of NB cells. Both ARMC12 and RBBP4 are upregulated in NB tissues, and are associated with unfavorable outcome of patients. These findings suggest the crucial roles of ARMC12 in tumor progression and a potential therapeutic approach for NB. Armadillo (ARM) family proteins can act as oncogenes or tumor suppressors. Here, the authors show that a new ARM protein (ARMC12) is upregulated in neuroblastoma, binds the PRC2 component RBBP4, and inhibits transcription of tumor suppressive genes.
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Affiliation(s)
- Dan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Huajie Song
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Hong Mei
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Erhu Fang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Xiaojing Wang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Feng Yang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Huanhuan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Yajun Chen
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Liduan Zheng
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China. .,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China.
| | - Qiangsong Tong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China. .,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China.
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54
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Murugesan T, Rajajeyabalachandran G, Kumar S, Nagaraju S, Jegatheesan SK. Targeting HIF-2α as therapy for advanced cancers. Drug Discov Today 2018; 23:1444-1451. [DOI: 10.1016/j.drudis.2018.05.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/27/2018] [Accepted: 05/02/2018] [Indexed: 12/14/2022]
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55
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Li D, Chen Y, Mei H, Jiao W, Song H, Ye L, Fang E, Wang X, Yang F, Huang K, Zheng L, Tong Q. Ets-1 promoter-associated noncoding RNA regulates the NONO/ERG/Ets-1 axis to drive gastric cancer progression. Oncogene 2018; 37:4871-4886. [PMID: 29773901 PMCID: PMC6117270 DOI: 10.1038/s41388-018-0302-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 03/20/2018] [Accepted: 04/16/2018] [Indexed: 01/12/2023]
Abstract
Emerging studies have indicated the essential functions of long noncoding RNAs (lncRNAs) during cancer progression. However, whether lncRNAs contribute to the upregulation of v-ets erythroblastosis virus E26 oncogene homolog 1 (Ets-1), an established oncogenic protein facilitating tumor invasion and metastasis, in gastric cancer remains elusive. Herein, we identified Ets-1 promoter-associated noncoding RNA (pancEts-1) as a novel lncRNA associated with the gastric cancer progression via mining of publicly available datasets and rapid amplification of cDNA ends. RNA pull-down, RNA immunoprecipitation, in vitro binding, and RNA electrophoretic mobility shift assays indicated the binding of pancEts-1 to non-POU domain containing octamer binding (NONO) protein. Mechanistically, pancEts-1 facilitated the physical interaction between NONO and Ets related gene (ERG), resulting in increased ERG transactivation and transcription of Ets-1 associated with gastric cancer progression. In addition, pancEts-1 facilitated the growth and aggressiveness of gastric cancer cells via interacting with NONO. In gastric cancer tissues, pancEts-1, NONO, and ERG were upregulated and significantly correlated with Ets-1 levels. High levels of pancEts-1, NONO, ERG, or Ets-1 were respectively associated with poor survival of gastric cancer patients, whereas simultaneous expression of all of them (HR = 3.012, P = 0.105) was not an independent prognostic factor for predicting clinical outcome. Overall, these results demonstrate that lncRNA pancEts-1 exhibits oncogenic properties that drive the progression of gastric cancer via regulating the NONO/ERG/Ets-1 axis.
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Affiliation(s)
- Dan Li
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Yajun Chen
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Hong Mei
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Wanju Jiao
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Huajie Song
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Lin Ye
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Erhu Fang
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Xiaojing Wang
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Feng Yang
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China
| | - Liduan Zheng
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China. .,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China.
| | - Qiangsong Tong
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China. .,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, China.
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56
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Wu DD, Gao YR, Li T, Wang DY, Lu D, Liu SY, Hong Y, Ning HB, Liu JP, Shang J, Shi JF, Wei JS, Ji XY. PEST-containing nuclear protein mediates the proliferation, migration, and invasion of human neuroblastoma cells through MAPK and PI3K/AKT/mTOR signaling pathways. BMC Cancer 2018; 18:499. [PMID: 29716528 PMCID: PMC5930684 DOI: 10.1186/s12885-018-4391-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 04/17/2018] [Indexed: 12/25/2022] Open
Abstract
Background PEST-containing nuclear protein (PCNP), a novel nuclear protein, is involved in cell proliferation and tumorigenesis. However, the precise mechanism of action of PCNP in the process of tumor growth has not yet been fully elucidated. Methods ShRNA knockdown and overexpression of PCNP were performed in human neuroblastoma cells. Tumorigenic and metastatic effects of PCNP were examined by tumor growth, migration, and invasion assays in vitro, as well as xenograft tumor assay in vivo. Results PCNP over-expression decreased the proliferation, migration, and invasion of human neuroblastoma cells and down-regulation of PCNP showed reverse effects. PCNP over-expression increased protein expressions of cleaved caspase-3, cleaved caspase-8, cleaved caspase-9, and cleaved poly adenosine diphosphate-ribose polymerase, as well as ratios of B-cell lymphoma-2 (Bcl-2)-associated X protein/Bcl-2 and Bcl-2-associated death promoter/B-cell lymphoma-extra large in human neuroblastoma cells, however PCNP knockdown exhibited reverse trends. PCNP over-expression increased phosphorylations of extracellular signal-regulated protein kinase 1/2, p38, c-Jun N-terminal kinase, as well as decreased phosphorylations of phosphatidylinositol 3-kinase (PI3K), Akt, and mammalian target of rapamycin (mTOR), nevertheless PCNP knockdown exhibited opposite effects. Furthermore, PCNP over-expression significantly reduced the growth of human neuroblastoma xenograft tumors by down-regulating angiogenesis, whereas PCNP knockdown markedly promoted the growth of human neuroblastoma xenograft tumors through up-regulation of angiogenesis. Conclusions PCNP mediates the proliferation, migration, and invasion of human neuroblastoma cells through mitogen-activated protein kinase and PI3K/AKT/mTOR signaling pathways, implying that PCNP is a therapeutic target for patients with neuroblastoma.
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Affiliation(s)
- Dong-Dong Wu
- School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004, Henan, China
| | - Ying-Ran Gao
- School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004, Henan, China
| | - Tao Li
- School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004, Henan, China
| | - Da-Yong Wang
- School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004, Henan, China
| | - Dan Lu
- School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004, Henan, China
| | - Shi-Yu Liu
- School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004, Henan, China
| | - Ya Hong
- School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004, Henan, China
| | - Hui-Bin Ning
- Henan Provincial People's Hospital Affiliated to Henan University, Zhengzhou, 450003, Henan, China
| | - Jun-Ping Liu
- Henan Provincial People's Hospital Affiliated to Henan University, Zhengzhou, 450003, Henan, China
| | - Jia Shang
- Henan Provincial People's Hospital Affiliated to Henan University, Zhengzhou, 450003, Henan, China
| | - Jun-Feng Shi
- Nanyang Nanshi Hospital Affiliated to Henan University, Nanyang, 473003, Henan, China
| | - Jian-She Wei
- Brain Research Laboratory, College of Life Sciences, Henan University, Kaifeng, 475004, Henan, China. .,Nanyang Nanshi Hospital Affiliated to Henan University, Nanyang, 473003, Henan, China.
| | - Xin-Ying Ji
- School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004, Henan, China. .,Henan Provincial People's Hospital Affiliated to Henan University, Zhengzhou, 450003, Henan, China.
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57
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Serocki M, Bartoszewska S, Janaszak-Jasiecka A, Ochocka RJ, Collawn JF, Bartoszewski R. miRNAs regulate the HIF switch during hypoxia: a novel therapeutic target. Angiogenesis 2018; 21:183-202. [PMID: 29383635 PMCID: PMC5878208 DOI: 10.1007/s10456-018-9600-2] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 01/22/2018] [Indexed: 12/20/2022]
Abstract
The decline of oxygen tension in the tissues below the physiological demand leads to the hypoxic adaptive response. This physiological consequence enables cells to recover from this cellular insult. Understanding the cellular pathways that mediate recovery from hypoxia is therefore critical for developing novel therapeutic approaches for cardiovascular diseases and cancer. The master regulators of oxygen homeostasis that control angiogenesis during hypoxia are hypoxia-inducible factors (HIFs). HIF-1 and HIF-2 function as transcriptional regulators and have both unique and overlapping target genes, whereas the role of HIF-3 is less clear. HIF-1 governs the acute adaptation to hypoxia, whereas HIF-2 and HIF-3 expressions begin during chronic hypoxia in human endothelium. When HIF-1 levels decline, HIF-2 and HIF-3 increase. This switch from HIF-1 to HIF-2 and HIF-3 signaling is required in order to adapt the endothelium to prolonged hypoxia. During prolonged hypoxia, the HIF-1 levels and activity are reduced, despite the lack of oxygen-dependent protein degradation. Although numerous protein factors have been proposed to modulate the HIF pathways, their application for HIF-targeted therapy is rather limited. Recently, the miRNAs that endogenously regulate gene expression via the RNA interference (RNAi) pathway have been shown to play critical roles in the hypoxia response pathways. Furthermore, these classes of RNAs provide therapeutic possibilities to selectively target HIFs and thus modulate the HIF switch. Here, we review the significance of the microRNAs on the relationship between the HIFs under both physiological and pathophysiological conditions.
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Affiliation(s)
- Marcin Serocki
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Hallera 107, 80-416, Gdańsk, Poland
| | - Sylwia Bartoszewska
- Department of Inorganic Chemistry, Medical University of Gdansk, Gdańsk, Poland
| | - Anna Janaszak-Jasiecka
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Hallera 107, 80-416, Gdańsk, Poland
| | - Renata J Ochocka
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Hallera 107, 80-416, Gdańsk, Poland
| | - James F Collawn
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rafał Bartoszewski
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Hallera 107, 80-416, Gdańsk, Poland.
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58
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Jiao W, Chen Y, Song H, Li D, Mei H, Yang F, Fang E, Wang X, Huang K, Zheng L, Tong Q. HPSE enhancer RNA promotes cancer progression through driving chromatin looping and regulating hnRNPU/p300/EGR1/HPSE axis. Oncogene 2018; 37:2728-2745. [PMID: 29511351 DOI: 10.1038/s41388-018-0128-0] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 12/08/2017] [Accepted: 12/19/2017] [Indexed: 12/15/2022]
Abstract
Recent studies reveal the emerging functions of enhancer RNAs (eRNAs) in gene expression. However, the roles of eRNAs in regulating the expression of heparanase (HPSE), an established endo-β-D-glucuronidase essential for cancer invasion and metastasis, still remain elusive. Herein, through comprehensive analysis of publically available FANTOM5 expression atlas and chromatin interaction dataset, we identified a super enhancer and its derived eRNA facilitating the HPSE expression (HPSE eRNA) in cancers. Gain-of-function and loss-of-function experiments indicated that HPSE eRNA facilitated the in vitro and in vivo tumorigenesis and aggressiveness of cancer cells. Mechanistically, as a p300-regulated nuclear noncoding RNA, HPSE eRNA bond to heterogeneous nuclear ribonucleoprotein U (hnRNPU) to facilitate its interaction with p300 and their enrichment on super enhancer, resulting in chromatin looping between super enhancer and HPSE promoter, p300-mediated transactivation of transcription factor early growth response 1 (EGR1), and subsequent elevation of HPSE expression. In addition, rescue studies in HPSE overexpressing or silencing cancer cells indicated that HPSE eRNA exerted oncogenic properties via driving HPSE expression. In clinical cancer tissues, HPSE eRNA was highly expressed and positively correlated with HPSE levels, and served as an independent prognostic factor for poor outcome of cancer patients. Therefore, these findings indicate that as a novel noncoding RNA, HPSE eRNA promotes cancer progression through driving chromatin looping and regulating hnRNPU/p300/EGR1/HPSE axis.
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Affiliation(s)
- Wanju Jiao
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yajun Chen
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Huajie Song
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Dan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hong Mei
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Feng Yang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Erhu Fang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiaojing Wang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Liduan Zheng
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. .,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Qiangsong Tong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. .,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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59
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Wang Y, Wang L, Chen C, Chu X. New insights into the regulatory role of microRNA in tumor angiogenesis and clinical implications. Mol Cancer 2018; 17:22. [PMID: 29415727 PMCID: PMC5804051 DOI: 10.1186/s12943-018-0766-4] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/12/2018] [Indexed: 02/07/2023] Open
Abstract
Angiogenesis is essential for tumor growth and metastasis. Understanding the regulation of tumor angiogenesis has become increasingly important. MicroRNAs (miRNAs) are small noncoding RNAs that function in diverse biological processes via post-transcriptional regulation. Extensive studies have revealed two important regulatory roles of miRNAs in tumor angiogenesis: miRNAs in tumor cells affect the activity of endothelial cells via non-cell-autonomous mechanisms, and miRNAs in endothelial cells regulate the cell-autonomous behavior. Recent advances have further highlighted the role of tumor-derived extracellular vesicles in the regulation of tumor angiogenesis via transferring miRNAs to endothelial cells. In this review, we summarize the regulatory role of miRNA in tumor angiogenesis, with a highlight on clinical implications of miRNAs as biomarkers for anti-angiogenic therapy response, and as therapeutic interventions against tumor angiogenesis in vivo.
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Affiliation(s)
- Ye Wang
- Department of Medical Oncology, Jinling Hospital, Nanjing Clinical School of Southern Medical University, 305 East Zhongshan Road, Nanjing, 210002, Jiangsu, China
| | - Liya Wang
- Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, Jiangsu, 210002, China
| | - Cheng Chen
- Department of Medical Oncology, Jinling Hospital, Nanjing Clinical School of Southern Medical University, 305 East Zhongshan Road, Nanjing, 210002, Jiangsu, China. .,Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, Jiangsu, 210002, China.
| | - Xiaoyuan Chu
- Department of Medical Oncology, Jinling Hospital, Nanjing Clinical School of Southern Medical University, 305 East Zhongshan Road, Nanjing, 210002, Jiangsu, China. .,Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, Jiangsu, 210002, China.
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Chen J, Zhou C, Li J, Xiang X, Zhang L, Deng J, Xiong J. miR‑21‑5p confers doxorubicin resistance in gastric cancer cells by targeting PTEN and TIMP3. Int J Mol Med 2018; 41:1855-1866. [PMID: 29393355 PMCID: PMC5810196 DOI: 10.3892/ijmm.2018.3405] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 01/04/2018] [Indexed: 12/13/2022] Open
Abstract
Drug resistance and disease recurrence are major obstacles to the effective treatment of cancer, including gastric cancer (GC). However, the mechanisms of drug resistance remain to be fully elucidated. The present study investigated the roles of microRNA (miR)-21-5p in the doxorubicin (DOX) resistance of GC cells and the underlying mechanisms. miR-21-5p expression levels were identified to be inversely correlated with two well-known tumor suppressor genes, phosphatase and tensin homologue and tissue inhibitor of matrix metalloproteinases 3, and were upregulated in GC cell lines in proportion to their degree of resistance. Suppressing miR-21-5p expression partially sensitized SGC7901/DOX cells to DOX, suggesting that knockdown of miR-21-5p expression may be used as a therapeutic strategy to improve GC cell resistance. Importantly, increased miR-21-5p expression levels at diagnosis were correlated with clinicopathological characteristics including advanced stage and poor prognosis, further implying that a relapse of GC may be a consequence of miR-21-5p upregulation, thus providing evidence for the potential utility of miR-21-5p antagonism to sensitize GC cells to DOX chemotherapy.
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Affiliation(s)
- Jun Chen
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Chao Zhou
- Department of Neurology, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Junhe Li
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xiaojun Xiang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Ling Zhang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Jun Deng
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Jianping Xiong
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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61
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miRNA-337-3p inhibits gastric cancer progression through repressing myeloid zinc finger 1-facilitated expression of matrix metalloproteinase 14. Oncotarget 2018; 7:40314-40328. [PMID: 27259238 PMCID: PMC5130010 DOI: 10.18632/oncotarget.9739] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 05/13/2016] [Indexed: 11/25/2022] Open
Abstract
Matrix metalloproteinase 14 (MMP-14), a membrane-anchored MMP that promotes the tumorigenesis and aggressiveness, is highly expressed in gastric cancer. However, the transcriptional regulators of MMP-14 expression in gastric cancer still remain largely unknown. In this study, through mining computational algorithm programs and chromatin immunoprecipitation datasets, we identified adjacent binding sites of myeloid zinc finger 1 (MZF1) and miRNA-337-3p (miR-337-3p) within the MMP-14 promoter. We demonstrated that MZF1 directly bound to the MMP-14 promoter to facilitate its nascent transcription and expression in gastric cancer cell lines. In contrast, endogenous miR-337-3p suppressed the MMP-14 expression through recognizing its binding site within MMP-14 promoter. Mechanistically, miR-337-3p repressed the binding of MZF1 to MMP-14 promoter via recruiting Argonaute 2 and inducing repressive chromatin remodeling. Gain- and loss-of-function studies demonstrated that miR-337-3p suppressed the growth, invasion, metastasis, and angiogenesis of gastric cancer cells in vitro and in vivo through repressing MZF1-facilitated MMP-14 expression. In clinical specimens and cell lines of gastric cancer, MZF1 was highly expressed and positively correlated with MMP-14 expression. Meanwhile, miR-337-3p was under-expressed and inversely correlated with MMP-14 levels. miR-337-3p was an independent prognostic factor for favorable outcome of gastric cancer, and patients with high MZF1 or MMP-14 expression had lower survival probability. Taken together, these data indicate that miR-337-3p directly binds to the MMP-14 promoter to repress MZF1-facilitatd MMP-14 expression, thus suppressing the progression of gastric cancer.
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62
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Qu H, Zheng L, Song H, Jiao W, Li D, Fang E, Wang X, Mei H, Pu J, Huang K, Tong Q. microRNA-558 facilitates the expression of hypoxia-inducible factor 2 alpha through binding to 5'-untranslated region in neuroblastoma. Oncotarget 2018; 7:40657-40673. [PMID: 27276678 PMCID: PMC5130034 DOI: 10.18632/oncotarget.9813] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 05/20/2016] [Indexed: 11/25/2022] Open
Abstract
Neuroblastoma (NB) is the most common extracranial solid tumor in childhood. Our previous studies have shown that hypoxia-inducible factor 2 alpha (HIF-2α), one member of the bHLH-PAS transcription factor family, facilitates the progression of NB under non-hypoxic conditions. However, the mechanisms underlying HIF-2α expression in NB still remain largely unknown. Herein, through analyzing the computational algorithm programs, we identified microRNA-558 (miR-558) as a crucial regulator of HIF-2α expression in NB. We demonstrated that miR-558 promoted the expression of HIF-2α at translational levels in NB cells through recruiting Argonaute 2 (AGO2). Mechanistically, miR-558 directly bound with its complementary site within 5′-untranslated region (5′-UTR) to facilitate the binding of AGO2 to eukaryotic translation initiation factor 4E (eIF4E) binding protein 1, resulting in increased eIF4E enrichment and HIF-2α translation. In addition, miR-558 promoted the growth, invasion, metastasis, and angiogenesis of NB cells in vitro and in vivo, and these biological features were rescued by knockdown of AGO2, eIF4E, or HIF-2α. In clinical NB specimens, miR-558, AGO2, and eIF4E were highly expressed and positively correlated with HIF-2α expression. Patients with high miR-558, HIF-2α, AGO2, or eIF4E levels had lower survival probability. Taken together, these results demonstrate that miR-558 facilitates the expression of HIF-2α through bindingto its 5′-UTR, thus promoting the tumorigenesis and aggressiveness of NB.
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Affiliation(s)
- Hongxia Qu
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Liduan Zheng
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China.,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Huajie Song
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Wanju Jiao
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Dan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Erhu Fang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Xiaojing Wang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Hong Mei
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Jiarui Pu
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
| | - Qiangsong Tong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China.,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, P. R. China
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63
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Chen S, Pu J, Bai J, Yin Y, Wu K, Wang J, Shuai X, Gao J, Tao K, Wang G, Li H. EZH2 promotes hepatocellular carcinoma progression through modulating miR-22/galectin-9 axis. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:3. [PMID: 29316949 PMCID: PMC5761110 DOI: 10.1186/s13046-017-0670-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 12/26/2017] [Indexed: 01/01/2023]
Abstract
Background Recent studies have shown that interferon-γ (IFN-γ)-induced galectin-9 expression in Kupffer cells plays an essential role in modulatingthe microenvironment of hepatitis-associated hepatocellular carcinoma (HCC). However, whether or not IFN-γ induces galectin-9 expression in HCC cells, its biological role and regulatory mechanism in HCC development and progression are poorly defined. Methods Quantitative PCR and western blotting analysis were used to detect galectin-9 and EZH2 levels in HCC cell lines stimulated with IFN-γ. Bioinformatics analysis and luciferase reporter assay were utilized to confirmthe binding ofmiR-22 to the 3′ untranslated region (3’-UTR) of galectin-9. The methylation status of miR-22 promoter was analyzed by MSP (Methylation specific PCR) and BSP (bisulfite sequencing PCR), while chromatin immunoprecipitation (ChIP) assay identify the occupation status of EZH2 and H3K27me3 at the promoter. Furthermore, the effect of ectopic expression of galectin-9 and miR-22 on cell proliferation, migration, invasion and cell apoptosis was assessed by using CCK-8, transwell assays and flow cytometric analysis, respectively. Results IFN-γ induces up-regulation of galectin-9 and EZH2 in HCC cell lines. Galectin-9 is a target of miR-22 and EZH2 facilitates galectin-9 expression by tri-methylation of H3K27 on miR-22 promoter but not hyper-methylation status of DNA. MiR-22 overexpression suppressed HCC cell growth, invasion, and metastasis both in vitro and in vivo. Interestingly, galectin-9 also exhibited antitumor effects, and restoring galectin-9 expression in miR-22 overexpressing cells strengthened its antitumor effects. Conclusions These findings indicated that EZH2 facilitates galectin-9 expression by epigenetically repressing miR-22 and that galectin-9, which is known as an immunosuppressant, also functions as a tumor suppressor in HCC. Electronic supplementary material The online version of this article (10.1186/s13046-017-0670-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shaofei Chen
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jiarui Pu
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jie Bai
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yuping Yin
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ke Wu
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jiliang Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiaoming Shuai
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jinbo Gao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Kaixiong Tao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Guobin Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hang Li
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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64
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Li H, Huang K, Gao L, Wang L, Niu Y, Liu H, Wang Z, Wang L, Wang G, Wang J. TES inhibits colorectal cancer progression through activation of p38. Oncotarget 2018; 7:45819-45836. [PMID: 27323777 PMCID: PMC5216763 DOI: 10.18632/oncotarget.9961] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 05/29/2016] [Indexed: 02/06/2023] Open
Abstract
The human TESTIN (TES) gene has been identified as a candidate tumor suppressor based on its location at a common fragile site – a region where loss of heterozygosity has been detected in numerous types of tumors. To investigate its role in colorectal cancer (CRC), we examined TES protein levels in CRC tissue samples and cell lines. We observed that TES was markedly reduced in both CRC tissue and cell lines. Additionally, overexpression of TES significantly inhibited cell proliferation, migration, and invasion, while increasing cell apoptosis in colon cancer cells. By contrast, shRNA-mediated TES knockdown elicited the opposite effects. TES inhibited the progression of CRC by up-regulating pro-apoptotic proteins, down-regulating anti-apoptotic proteins, and simultaneously activating p38 mitogen-activated protein kinase (MAPK) signaling pathways. Collectively, these data indicate that TES functions as a necessary suppressor of CRC progression by activating p38-MAPK signaling pathways. This suggests that TES may have a potential application in CRC diagnosis and targeted gene therapy.
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Affiliation(s)
- Huili Li
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Kun Huang
- Institution of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lu Gao
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lixia Wang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yanfeng Niu
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hongli Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zheng Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.,Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lin Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Guobin Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jiliang Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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65
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Li D, Wang X, Mei H, Fang E, Ye L, Song H, Yang F, Li H, Huang K, Zheng L, Tong Q. Long Noncoding RNA pancEts-1 Promotes Neuroblastoma Progression through hnRNPK-Mediated β-Catenin Stabilization. Cancer Res 2018; 78:1169-1183. [PMID: 29311158 DOI: 10.1158/0008-5472.can-17-2295] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 12/02/2017] [Accepted: 01/02/2018] [Indexed: 11/16/2022]
Abstract
Long noncoding RNAs (lncRNA) play essential roles in tumor progression. However, the functions of lncRNAs in the tumorigenesis and aggressiveness of neuroblastoma still remain to be determined. Here, we report the identification of lncRNA pancEts-1 as a novel driver of neuroblastoma progression by using a public microarray dataset. LncRNA pancEts-1 promoted the growth, invasion, and metastasis of neuroblastoma cells in vitro and in vivo Mechanistically, pancEts-1 bound to hnRNPK to facilitate its physical interaction with β-catenin, whereas hnRNPK stabilized the β-catenin by inhibiting proteasome-mediated degradation, resulting in transcriptional alteration of target genes associated with neuroblastoma progression. Both pancEts-1 and hnRNPK were upregulated in clinical neuroblastoma tissues, and were associated with unfavorable outcome of patients. Overall, our results define an oncogenic role of pancEts-1 in neuroblastoma progression through hnRNPK-mediated β-catenin stabilization, with potential implications for the clinical therapeutics of neuroblastoma.Significance: These findings reveal the oncogenic functions of a long noncoding RNA in neuroblastoma progression, offering a potential target for clinical therapeutics. Cancer Res; 78(5); 1169-83. ©2018 AACR.
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Affiliation(s)
- Dan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Xiaojing Wang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Hong Mei
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Erhu Fang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Lin Ye
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Huajie Song
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Feng Yang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Huanhuan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Liduan Zheng
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China.
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Qiangsong Tong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China.
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
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66
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Thuringer D, Jego G, Berthenet K, Hammann A, Solary E, Garrido C. Gap junction-mediated transfer of miR-145-5p from microvascular endothelial cells to colon cancer cells inhibits angiogenesis. Oncotarget 2018; 7:28160-8. [PMID: 27058413 PMCID: PMC5053717 DOI: 10.18632/oncotarget.8583] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 03/28/2016] [Indexed: 11/25/2022] Open
Abstract
Gap junctional communication between cancer cells and blood capillary cells is crucial to tumor growth and invasion. Gap junctions may transfer microRNAs (miRs) among cells. Here, we explore the impact of such a transfer in co-culture assays, using the antitumor miR-145 as an example. The SW480 colon carcinoma cells form functional gap junction composed of connexin-43 (Cx43) with human microvascular endothelial cells (HMEC). When HMEC are loaded with miR-145-5p mimics, the miR-145 level drastically increases in SW480. The functional inhibition of gap junctions, using either a gap channel blocker or siRNA targeting Cx43, prevents this increase. The transfer of miR-145 also occurs from SW480 to HMEC but not in non-contact co-cultures, excluding the involvement of soluble exosomes. The miR-145 transfer to SW480 up-regulates their Cx43 expression and inhibits their ability to promote angiogenesis. Our results indicate that the gap junctional communication can inhibit tumor growth by transferring miRs from one endothelial cell to neighboring tumor cells. This “bystander” effect could find application in cancer therapy.
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Affiliation(s)
| | - Gaetan Jego
- INSERM, U866, Faculty of Medecine, 21000 Dijon, France.,University of Bourgogne-Franche-Comté, 21000 Dijon, France
| | | | | | - Eric Solary
- INSERM, U1170, Institut Gustave Roussy, 94508 Villejuif, France
| | - Carmen Garrido
- INSERM, U866, Faculty of Medecine, 21000 Dijon, France.,University of Bourgogne-Franche-Comté, 21000 Dijon, France.,CGFL, BP77980, 21000 Dijon, France
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67
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De A, Powers B, De A, Zhou J, Sharma S, Van Veldhuizen P, Bansal A, Sharma R, Sharma M. Emblica officinalis extract downregulates pro-angiogenic molecules via upregulation of cellular and exosomal miR-375 in human ovarian cancer cells. Oncotarget 2017; 7:31484-500. [PMID: 27129171 PMCID: PMC5058772 DOI: 10.18632/oncotarget.8966] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 03/31/2016] [Indexed: 12/21/2022] Open
Abstract
Ovarian cancer (OC) is highly resistant to current treatment strategies based on a combination of surgery, chemotherapy and radiation therapy. We have recently demonstrated the anti-neoplastic effect of Amla extract (Emblica officinalis, AE) on OC cells in vitro and in vivo. We hypothesized that AE attenuates growth of OC through microRNA (miR)-regulated mechanism(s). The inhibitory effect of AE on proliferation, migration and invasiveness (P≤0.001) of SKOV3 cells and >90% attenuation of tumor growth in a xenograft mouse model suggested multiple targets. RT-qPCR analysis of microRNAs associated with OC showed a >2,000-fold increase in the expression of miR-375 in AE-treated SKOV3 cells that was blocked by an exogenous miR-375 inhibitor (P≤0.001). AE also decreased the gene and protein expression of IGF1R, a target of miR-375 (P≤0.001), and SNAIL1 (P≤0.002), an EMT-associated transcription factor that represses E-cadherin expression (P≤0.003). AE increased E-cadherin expression (P≤0.001). Treatment of SKOV3 cells with AE resulted in increased miR-375 in exosomes in the medium (P≤0.01). Finally, AE significantly decreased the expression of IGF1R and SNAIL1 proteins during attenuation of SKOV3-derived xenograft tumor. Together, these results show that AE modulates cancer cells and the tumor microenvironment via activation of miR-375 and by targeting IGF1R and SNAIL1 in OC cells.
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Affiliation(s)
- Alok De
- Kansas City VA Medical Center and Midwest Biomedical Research Foundation, Kansas City, MO 64128, United States
| | - Benjamin Powers
- Kansas City VA Medical Center and Midwest Biomedical Research Foundation, Kansas City, MO 64128, United States
| | - Archana De
- Kansas City VA Medical Center and Midwest Biomedical Research Foundation, Kansas City, MO 64128, United States
| | - Jianping Zhou
- Kansas City VA Medical Center and Midwest Biomedical Research Foundation, Kansas City, MO 64128, United States
| | - Siddarth Sharma
- Kansas City VA Medical Center and Midwest Biomedical Research Foundation, Kansas City, MO 64128, United States
| | - Peter Van Veldhuizen
- Kansas City VA Medical Center and Midwest Biomedical Research Foundation, Kansas City, MO 64128, United States
| | - Ajay Bansal
- Kansas City VA Medical Center and Midwest Biomedical Research Foundation, Kansas City, MO 64128, United States
| | - Ramratan Sharma
- Kansas City VA Medical Center and Midwest Biomedical Research Foundation, Kansas City, MO 64128, United States
| | - Mukut Sharma
- Kansas City VA Medical Center and Midwest Biomedical Research Foundation, Kansas City, MO 64128, United States
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68
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Zhao X, Li D, Huang D, Song H, Mei H, Fang E, Wang X, Yang F, Zheng L, Huang K, Tong Q. Risk-Associated Long Noncoding RNA FOXD3-AS1 Inhibits Neuroblastoma Progression by Repressing PARP1-Mediated Activation of CTCF. Mol Ther 2017; 26:755-773. [PMID: 29398485 PMCID: PMC5910666 DOI: 10.1016/j.ymthe.2017.12.017] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 12/13/2017] [Accepted: 12/18/2017] [Indexed: 01/22/2023] Open
Abstract
Neuroblastoma (NB) is the most common extracranial tumor in childhood. Recent studies have implicated the emerging roles of long noncoding RNAs (lncRNAs) in tumorigenesis and aggressiveness. However, the functions and targets of risk-associated lncRNAs in NB progression still remain to be determined. Herein, through mining of public microarray datasets, we identify lncRNA forkhead box D3 antisense RNA 1 (FOXD3-AS1) as an independent prognostic marker for favorable outcome of NB patients. FOXD3-AS1 is downregulated in NB tissues and cell lines, and ectopic expression of FOXD3-AS1 induces neuronal differentiation and decreases the aggressiveness of NB cells in vitro and in vivo. Mechanistically, as a nuclear lncRNA, FOXD3-AS1 interacts with poly(ADP-ribose) polymerase 1 (PARP1) to inhibit the poly(ADP-ribosyl)ation and activation of CCCTC-binding factor (CTCF), resulting in derepressed expression of downstream tumor-suppressive genes. Rescue experiments indicate that FOXD3-AS1 harbors tumor-suppressive properties by inhibiting the oncogenic roles of PARP1 or CTCF and plays crucial roles in all-trans-retinoic-acid-mediated therapeutic effects on NB. Administration of FOXD3-AS1 construct or siRNAs against PARP1 or CTCF reduces the tumor growth and prolongs the survival of nude mice. These findings suggest that as a risk-associated lncRNA, FOXD3-AS1 inhibits the progression of NB through repressing PARP1-mediated CTCF activation.
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Affiliation(s)
- Xiang Zhao
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China
| | - Dan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China
| | - Dandan Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China
| | - Huajie Song
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China
| | - Hong Mei
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China
| | - Erhu Fang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China
| | - Xiaojing Wang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China
| | - Feng Yang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China
| | - Liduan Zheng
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China; Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China.
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China.
| | - Qiangsong Tong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China; Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, Hubei Province, China.
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Lou W, Liu J, Gao Y, Zhong G, Chen D, Shen J, Bao C, Xu L, Pan J, Cheng J, Ding B, Fan W. MicroRNAs in cancer metastasis and angiogenesis. Oncotarget 2017; 8:115787-115802. [PMID: 29383201 PMCID: PMC5777813 DOI: 10.18632/oncotarget.23115] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/17/2017] [Indexed: 12/15/2022] Open
Abstract
Cancer metastasis is a malignant process by which tumor cells migrate from their primary site of origin to other organs. It is the main cause of poor prognosis in cancer patients. Angiogenesis is the process of generating new blood capillaries from pre-existing vasculature. It plays a vital role in primary tumor growth and distant metastasis. MicroRNAs are small non-coding RNAs involved in regulating normal physiological processes as well as cancer pathogenesis. They suppress gene expression by specifically binding to the 3′-untranslated region (3′-UTR) of their target genes. They can thus act as oncogenes or tumor suppressors depending on the function of their target genes. MicroRNAs have shown great promise for use in anti-metastatic cancer therapy. In this article, we review the roles of various miRNAs in cancer angiogenesis and metastasis and highlight their potential for use in future therapies against metastatic cancer.
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Affiliation(s)
- Weiyang Lou
- Program of Innovative Cancer Therapeutics, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou 310003, China
| | - Jingxing Liu
- Department of Intensive Care Unit, Changxing People's Hospital of Zhejiang, Zhejiang Province, Huzhou 313100, China
| | - Yanjia Gao
- Department of Anesthesiology, International Hospital of Zhejiang University, Shulan (Hangzhou) Hospital, Zhejiang Province, Hangzhou 310003, China
| | - Guansheng Zhong
- Program of Innovative Cancer Therapeutics, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou 310003, China
| | - Danni Chen
- Program of Innovative Cancer Therapeutics, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou 310003, China
| | - Jiaying Shen
- Program of Innovative Cancer Therapeutics, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou 310003, China
| | - Chang Bao
- Program of Innovative Cancer Therapeutics, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou 310003, China
| | - Liang Xu
- Clinical Research Center, First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang Province, Hangzhou 310003, China
| | - Jie Pan
- Program of Innovative Cancer Therapeutics, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou 310003, China
| | - Junchi Cheng
- Department of Chemotherapy, Zhejiang Cancer Hospital, Zhejiang Province, Hangzhou 310003, China
| | - Bisha Ding
- Program of Innovative Cancer Therapeutics, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou 310003, China
| | - Weimin Fan
- Program of Innovative Cancer Therapeutics, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, College of Medicine, Zhejiang University, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation, Zhejiang Province, Hangzhou 310003, China.,Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
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70
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PD-L1, inflammation, non-coding RNAs, and neuroblastoma: Immuno-oncology perspective. Semin Cancer Biol 2017; 52:53-65. [PMID: 29196189 DOI: 10.1016/j.semcancer.2017.11.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 11/11/2017] [Accepted: 11/16/2017] [Indexed: 12/21/2022]
Abstract
Neuroblastoma is the most common pediatric solid tumor of neural crest origin. The current treatment options for neuroblastoma produce severe side effects. Programmed death-ligand 1 (PD-L1), chronic inflammation, and non-coding RNAs are known to play a significant role in the pathogenesis of neuroblastoma. Cancer cells and the surrounding cells in the tumor microenvironment express PD-L1. Programmed death-1 (PD-1) is a co-receptor expressed predominantly by T cells. The binding of PD-1 to its ligands, PD-L1 or PD-L2, is vital for the physiologic regulation of the immune system. Chronic inflammation is involved in the recruitment of leukocytes, production of cytokines and chemokines that in turn, lead to survival, metastasis, and angiogenesis in neuroblastoma tumors. The miRNAs and long non-coding (lnc) RNAs have emerged as a novel class of non-coding RNAs that can regulate neuroblastoma associated cell-signaling pathways. The dysregulation of PD-1/PD-L1, inflammatory pathways, lncRNAs, and miRNAs have been reported in clinical and experimental samples of neuroblastoma. These signaling molecules are currently being evaluated for their potential as the biomarker and therapeutic targets in the management of neuroblastoma. A monoclonal antibody called dinutuximab (Unituxin) that attaches to a carbohydrate molecule GD2, on the surface of many neuroblastoma cells, is being used as an immunotherapy drug for neuroblastoma treatment. Atezolizumab (Tecentriq), an engineered monoclonal antibody against PD-L1, are currently in clinical trial for neuroblastoma patients. The lncRNA/miRNA-based therapeutics is being developed to deliver tumor suppressor lncRNAs/miRNAs or silencing of oncogenic lncRNAs/miRNAs. The focus of this review is to discuss the current knowledge on the immune checkpoint molecules, PD-1/PD-L1 signaling, inflammation, and non-coding RNAs in neuroblastoma.
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71
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Ergin K, Aktaş S, Altun Z, Dınız G, Olgun N. MicroRNA profiles in neuroblastoma: Differences in risk and histology groups. Asia Pac J Clin Oncol 2017; 14:e374-e379. [PMID: 29115037 DOI: 10.1111/ajco.12821] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 10/04/2017] [Indexed: 12/16/2022]
Abstract
AIM To determine the miRNA expression profiles of neuroblastomas with different clinical and histological characteristics. METHODS In this study 24 samples from 17 patients, paraffin blocks were used. Their microRNA profiles were compared by five different analysis: analysis I: well-poorly differentiated, analysis II: before-after chemotherapy, analysis III: favorable-unfavorable histology, analysis IV: neuroblastoma-ganglioneuroma, analysis V: low-risk-middle-risk-high risk groups. Clinical data were compared with differentially expressed microRNAs. RESULTS It was found that 25 miRNAs between well-poorly differentiated tumors, eight miRNAs before and after of the chemotherapy, three miRNAs between favorable and unfavorable histology, four miRNAs between neuroblastoma and ganglioneuroma, seven miRNAs between low and middle risk, one miRNA between middle and high risk, 14 miRNAs between low and high risk were differently expressed (P < 0.01). These miRNA's targeted mostly the cancer pathway by the KEGG pathway analysis. The most marked difference was seen in miR-132 and miR-490, comparing the clinical data and all microRNAs. The most fold change was detected at miR-98-5p between the tissues of high- and low-risk patients. CONCLUSION In this study, we represent microRNA expression profiles of neuroblastoma patients' tissue with different clinical, histological grade, differentiation, and treatment status, and which could be informative for new therapies targeting microRNAs.
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Affiliation(s)
- Kemal Ergin
- Department of Histology and Embryology, Medical Faculty, Adnan Menderes University, Aydın, Turkey
| | - Safiye Aktaş
- Department of Basic Oncology, Institute of Oncology, Dokuz Eylul University, İzmir, Turkey
| | - Zekiye Altun
- Department of Basic Oncology, Institute of Oncology, Dokuz Eylul University, İzmir, Turkey
| | - Gülden Dınız
- Department of Pathology, Tepecik Research, and Education Hospital, İzmir, Turkey
| | - Nur Olgun
- Department of Basic Oncology, Institute of Oncology, Dokuz Eylul University, İzmir, Turkey.,Department of Pediatric Oncology, Medical Faculty, Dokuz Eylül University, İzmir, Turkey
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72
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Abstract
Hypoxia (i.e., low oxygen levels) is a known feature of aggressive tumors. Cells, including tumor cells, respond to conditions of insufficient oxygen by activating a transcriptional program mainly driven by hypoxia-inducible factors (HIF)-1 and HIF-2. Both HIF-1α and HIF-2α expression levels have been shown to correlate to patient outcome in various tumor forms and in neuroblastoma, a solid childhood tumor of the sympathetic nervous system, in particular, HIF-2α marks a subpopulation of immature neural crest-like perivascularly located cells and associates with aggressive disease and distant metastasis. It has for long been recognized that the HIF-α subunits are oxygen-dependently regulated at the post-translational level, via ubiquitination and proteasomal degradation. Evidence of oxygen-independent mechanisms of regulation, transcriptional control of EPAS1/HIF2A and possible cytoplasmic activities of HIF-2α has also emerged during recent years. In this review, we discuss these non-conventional actions of HIF-2α, its putative role as a therapeutic target and the constraints it carries, as well as the importance of HIF-2 activity in a vascularized setting, the so-called pseudo-hypoxic state.
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73
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Ofek P, Tiram G, Satchi-Fainaro R. Angiogenesis regulation by nanocarriers bearing RNA interference. Adv Drug Deliv Rev 2017; 119:3-19. [PMID: 28163106 DOI: 10.1016/j.addr.2017.01.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 01/25/2017] [Accepted: 01/31/2017] [Indexed: 12/22/2022]
Abstract
Since the approval of bevacizumab as anti-angiogenic therapy in 2004 by the FDA, an array of angiogenesis inhibitors have been developed and approved. However, results were disappointing with regard to their therapeutic efficacy. RNA interference approaches offer the possibility of rational design with high specificity, lacking in many current drug treatments for various diseases including cancer. However, in vivo delivery issues still represent a significant obstacle for widespread clinical applications. In the current review, we summarize the advances in the last decade in the field of angiogenesis-targeted RNA interference approaches, with special emphasis on oncology applications. We present pro-angiogenic and anti-angiogenic factors as potential targets, experimental evidence and clinical trials data on angiogenesis regulation by RNA interference. Consequent challenges and opportunities are discussed.
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Affiliation(s)
- Paula Ofek
- Department of Physiology and Pharmacology, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Galia Tiram
- Department of Physiology and Pharmacology, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ronit Satchi-Fainaro
- Department of Physiology and Pharmacology, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
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74
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Abstract
Endocrine is an important and tightly regulated system for maintaining body homeostasis. Endocrine glands produce hormones, which are released into blood stream to guide the target cells responding to all sorts of stimulations. For maintaining body homeostasis, the secretion and activity of a particular hormone needs to be adjusted in responding to environmental challenges such as changes in nutritional status or chronic stress. Hypoxia, a status caused by reduced oxygen availability or imbalance of oxygen consumption/supply in an organ or within a cell, is a stress that affects many physiological and pathological processes. Hypoxic stress in endocrine organs is especially critical because endocrine glands control body homeostasis. Local hypoxia affects not only the particular gland but also the downstream cells/organs regulated by hormones secreted from this gland. Hypoxia-inducible factors (HIFs) are transcription factors that function as master regulators of oxygen homeostasis. Recent studies report that aberrant expression of HIFs in endocrine organs may result in the development and/or progression of diseases including diabetes, endometriosis, infertility and cancers. In this article, we will review recent findings in HIF-mediated endocrine organ dysfunction and the systemic syndromes caused by these disorders.
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Affiliation(s)
- Hsiu-Chi Lee
- Institute of Basic Medical SciencesCollege of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shaw-Jenq Tsai
- Institute of Basic Medical SciencesCollege of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of PhysiologyCollege of Medicine, National Cheng Kung University, Tainan, Taiwan
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75
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LncRNA-SARCC suppresses renal cell carcinoma (RCC) progression via altering the androgen receptor(AR)/miRNA-143-3p signals. Cell Death Differ 2017. [PMID: 28644440 DOI: 10.1038/cdd.2017.74] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
While the androgen receptor (AR) might promote renal cell carcinoma (RCC) initiation and progression, the molecular mechanisms involved remain largely unclear. Here, we discovered the novel LncRNA-SARCC, which was suppressed and associated with better prognosis in RCC. Preclinical studies using multiple RCC cells and in vivo mouse model indicated that LncRNA-SARCC could attenuate RCC cell invasion, migration and proliferation in vitro and in vivo. Mechanistically, LncRNA-SARCC bound and destabilized AR protein with an inhibition of AR function, which led to transcriptionally de-repress miR-143-3p expression, thus inhibition of its downstream signals including AKT, MMP-13, K-RAS and P-ERK. In addition, bisulfite sequencing analysis substantiated that LncRNA-SARCC promoter was highly methylated in renal cancer tissues compared with paired non-cancerous renal tissues. Notably, treating with Sunitinib, the multi-targeted receptor tyrosine kinase inhibitor, increased the expression of LncRNA-SARCC, which decreased RCC cells resistance to Sunitinib. Thus, our study presented a road map for targeting this newly identified LncRNA-SARCC and its pathway, which expands potential therapeutic strategies for RCC treatment.
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76
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Wang Z, Yao W, Li K, Zheng N, Zheng C, Zhao X, Zheng S. Reduction of miR-21 induces SK-N-SH cell apoptosis and inhibits proliferation via PTEN/PDCD4. Oncol Lett 2017; 13:4727-4733. [PMID: 28599474 PMCID: PMC5452970 DOI: 10.3892/ol.2017.6052] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 01/10/2017] [Indexed: 12/26/2022] Open
Abstract
MicroRNA (miR/miRNA)-21 is a well-known oncogenic miRNA that is overexpressed in various types of tumors. The tumor-suppressor genes programmed cell death 4 (PDCD4) and phosphatase tensin homologue (PTEN), are targets of miR-21, and are underexpressed in several types of cancer. However, the expression of miR-21 and its target genes in neuroblastoma (NB) remains unclear. In the present study, a miR-21 inhibitor oligonucleotide was transfected into the SK-N-SH cell line, and the expression of miR-21, PTEN and PDCD4 was detected through quantitative polymerase chain reaction analysis. Western blotting was used to examine levels of PTEN, PDCD4 and caspase-3 proteins. The expression of PTEN and PDCD4 in the SK-N-SH cell line transfected with the miR-21 inhibitor was significantly increased compared with untransfected SK-N-SH and negative control-transfected cells. Cell proliferation was inhibited and the apoptotic ratio was significantly increased in miR-21 inhibitor-transfected cells compared with untransfected SK-N-SH and negative control-transfected cells. Western blot analysis revealed a significant increase in caspase-3 expression compared with untransfected SK-N-SH and negative control-transfected cells. The results of the present study indicate that miR-21 may serve an oncogenic role in the cellular processes underlying NB development and thus may be a novel therapeutic target for the treatment of patients with NB.
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Affiliation(s)
- Zuopeng Wang
- Department of Pediatric Surgery, Children's Hospital of Fudan University, Shanghai 201102, P.R. China
| | - Wei Yao
- Department of Pediatric Surgery, Children's Hospital of Fudan University, Shanghai 201102, P.R. China
| | - Kai Li
- Department of Pediatric Surgery, Children's Hospital of Fudan University, Shanghai 201102, P.R. China
| | - Na Zheng
- Department of Pediatric Surgery, Children's Hospital of Fudan University, Shanghai 201102, P.R. China
| | - Chao Zheng
- Department of Pediatric Surgery, Children's Hospital of Fudan University, Shanghai 201102, P.R. China
| | - Xiaolong Zhao
- Department of Endocrinology, Huashan Hospital of Fudan University, Shanghai 200040, P.R. China
| | - Shan Zheng
- Department of Pediatric Surgery, Children's Hospital of Fudan University, Shanghai 201102, P.R. China
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77
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Dicer suppresses the malignant phenotype in VHL-deficient clear cell renal cell carcinoma by inhibiting HIF-2α. Oncotarget 2017; 7:18280-94. [PMID: 26943772 PMCID: PMC4951288 DOI: 10.18632/oncotarget.7807] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 01/23/2016] [Indexed: 12/11/2022] Open
Abstract
Both the von Hippel-Lindau (VHL)/hypoxia-inducible factor (HIF) pathway and microRNA (miRNA) regulation are important mechanisms underlying the development and progression of clear cell renal cell carcinoma (ccRCC). Here we demonstrate that VHL deficiency leads to downregulation of Dicer and, in turn, defects in the miRNA biogenesis machinery in ccRCCs. Dicer inhibited expression of HIF-2α, which was a direct target of Dicer-dependent miR-182-5p in VHL-deficient ccRCCs. Ectopic Dicer expression in VHL-deficient ccRCCs suppressed tumor growth and angiogenesis by inhibiting HIF-2α both in vitro and in vivo. Reduced Dicer mRNA levels served as an independent prognostic factor for poor survival in patients with VHL-deficient ccRCC. Our results indicate that downregulation of Dicer in VHL-deficient ccRCCs contributes to high levels of HIF-2α and a malignant phenotype, which suggests Dicer could be a useful therapeutic target for managing this disease.
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78
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Xu L, Tao X, Gao Y, Zhang W, Meng Y, Li C, Jiang M, Xixiang Y. Cytotoxicity of hydroxydihydrobovolide and its pharmacokinetic studies in Portulaca oleracea L. extract. BRAZ J PHARM SCI 2017. [DOI: 10.1590/s2175-97902017000216093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Liang Xu
- Liaoning University of Traditional Chinese Medicine, China
| | - Xiaojun Tao
- Liaoning University of Traditional Chinese Medicine, China
| | - Yucong Gao
- Liaoning University of Traditional Chinese Medicine, China
| | - Wenjie Zhang
- Liaoning University of Traditional Chinese Medicine, China
| | - Yihan Meng
- Liaoning University of Traditional Chinese Medicine, China
| | - Cuiyu Li
- Liaoning University of Traditional Chinese Medicine, China
| | - Mingyue Jiang
- Liaoning University of Traditional Chinese Medicine, China
| | - Ying Xixiang
- Liaoning University of Traditional Chinese Medicine, China
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79
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Xiang X, Mei H, Zhao X, Pu J, Li D, Qu H, Jiao W, Zhao J, Huang K, Zheng L, Tong Q. miRNA-337-3p suppresses neuroblastoma progression by repressing the transcription of matrix metalloproteinase 14. Oncotarget 2016; 6:22452-66. [PMID: 26084291 PMCID: PMC4673175 DOI: 10.18632/oncotarget.4311] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 06/03/2015] [Indexed: 02/06/2023] Open
Abstract
Recent evidence shows the emerging roles of endogenous microRNAs (miRNAs) in repressing gene transcription. However, the miRNAs inhibiting the transcription of matrix metalloproteinase 14 (MMP-14), a membrane-anchored MMP crucial for the tumorigenesis and aggressiveness, still remain largely unknown. In this study, through mining computational algorithm program and genome-wide Argonaute profiling dataset, we identified one binding site of miRNA-337-3p (miR-337-3p) within the MMP-14 promoter. We demonstrated that miR-337-3p was under-expressed and inversely correlated with MMP-14 expression in clinical specimens and cell lines of neuroblastoma (NB), the most common extracranial solid tumor in childhood. Patients with high miR-337-3p expression had greater survival probability. miR-337-3p suppressed the promoter activity, nascent transcription, and expression of MMP-14, resulting in decreased levels of vascular endothelial growth factor, in cultured NB cell lines. Mechanistically, miR-337-3p recognized its binding site and recruited Argonaute 2 to facilitate the enrichment of repressive epigenetic markers and decrease the binding of RNA polymerase II and specificity protein 1 on the MMP-14 promoter. Gain- and loss-of-function studies demonstrated that miR-337-3p suppressed the growth, invasion, metastasis, and angiogenesis of NB cells in vitro and in vivo. In addition, restoration of MMP-14 expression rescued the NB cells from changes in these biological features. Taken together, these data indicate that miR-337-3p directly binds the MMP-14 promoter to repress its transcription, thus suppressing the progression of NB.
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Affiliation(s)
- Xuan Xiang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Hong Mei
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Xiang Zhao
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Jiarui Pu
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Dan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Hongxia Qu
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Wanju Jiao
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Jihe Zhao
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Liduan Zheng
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China.,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Qiangsong Tong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China.,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
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80
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Smad4 suppresses the tumorigenesis and aggressiveness of neuroblastoma through repressing the expression of heparanase. Sci Rep 2016; 6:32628. [PMID: 27595937 PMCID: PMC5011643 DOI: 10.1038/srep32628] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 08/11/2016] [Indexed: 12/25/2022] Open
Abstract
Heparanase (HPSE) is the only endo-β-D-glucuronidase that is correlated with the progression of neuroblastoma (NB), the most common extracranial malignancy in childhood. However, the mechanisms underlying HPSE expression in NB still remain largely unknown. Herein, through analyzing cis-regulatory elements and mining public microarray datasets, we identified SMAD family member 4 (Smad4) as a crucial transcription regulator of HPSE in NB. We demonstrated that Smad4 repressed the HPSE expression at the transcriptional levels in NB cells. Mechanistically, Smad4 suppressed the HPSE expression through directly binding to its promoter and repressing the lymphoid enhancer binding factor 1 (LEF1)-facilitated transcription of HPSE via physical interaction. Gain- and loss-of-function studies demonstrated that Smad4 inhibited the growth, invasion, metastasis, and angiogenesis of NB cells in vitro and in vivo. Restoration of HPSE expression prevented the NB cells from changes in these biological features induced by Smad4. In clinical NB specimens, Smad4 was under-expressed and inversely correlated with HPSE levels, while LEF1 was highly expressed and positively correlated with HPSE expression. Patients with high Smad4 expression, low LEF1 or HPSE levels had greater survival probability. These results demonstrate that Smad4 suppresses the tumorigenesis and aggressiveness of NB through repressing the HPSE expression.
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81
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Li S, Wu X, Xu Y, Wu S, Li Z, Chen R, Huang N, Zhu Z, Xu X. miR-145 suppresses colorectal cancer cell migration and invasion by targeting an ETS-related gene. Oncol Rep 2016; 36:1917-26. [PMID: 27572146 DOI: 10.3892/or.2016.5042] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 03/17/2016] [Indexed: 11/06/2022] Open
Abstract
MicroRNA-45 (miR-145) has been demonstrated to be downregulated in various cancer types including colorectal cancer (CRC). However, the function of miR‑145 in CRC has not been clearly elucidated. In this study, we examined miR-145 expression by quantitative real‑time PCR (qRT‑PCR) in CRC cell lines as well as tumors and corresponding normal mucosa, and the results were correlated to the clinicopathological parameters. In addition, using computational algorithms we investigated putative miR‑145 targets. The role of miR‑145 was further examined in studies in vitro. In our study miR‑145 was significantly decreased in CRC tissues and cell lines compared with non‑cancerous colorectal mucosa, especially lymph node or distance metastasis cases. Based on computational algorithms, we assumed that ERG was directly modulated by miR‑145 in colorectal cancer cells. For the first time, we demonstrated that ERG was highly expressed in CRC tissues compared with normal ones by qRT‑PCR. The inverse correlation between the expression of miR‑145 and ERG was observed in CRC tissues. Dual‑Luciferase assays demonstrated the direct interaction between miR‑145 and 3'‑UTR of ERG mRNA. Ectopic expression of miR‑145 suppressed the proliferation and invasion ability of colorectal cancer cells, while ERG knockdown partially restored the tumor suppressive effect of miR‑145. These results suggested that miR‑145 might act as a tumor suppressor during the process of CRC malignant transformation by interacting with ERG.
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Affiliation(s)
- Shuling Li
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Xiaobing Wu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Yuandong Xu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Shangbiao Wu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Zhifa Li
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Rong Chen
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Nanqi Huang
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Ziyuan Zhu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Xuehu Xu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
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82
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Chen Y, Sun Y, Rao Q, Xu H, Li L, Chang C. Androgen receptor (AR) suppresses miRNA-145 to promote renal cell carcinoma (RCC) progression independent of VHL status. Oncotarget 2016; 6:31203-15. [PMID: 26304926 PMCID: PMC4741598 DOI: 10.18632/oncotarget.4522] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 04/23/2015] [Indexed: 12/18/2022] Open
Abstract
Mutational inactivation of the VHL tumor suppressor plays key roles in the development of renal cell carcinoma (RCC), and mutated VHL-mediated VEGF induction has become the main target for the current RCC therapy. Here we identified a signal pathway of VEGF induction by androgen receptor (AR)/miRNA-145 as a new target to suppress RCC progression. Mechanism dissection revealed that AR might function through binding to the androgen receptor element (ARE) located on the promoter region of miRNA-145 to suppress p53's ability to induce expression of miRNA-145 that normally suppresses expression of HIF2α/VEGF/MMP9/CCND1. Suppressing AR with AR-shRNA or introducing exogenous miRNA-145 mimic can attenuate RCC progression independent of VHL status. MiR-145 mimic in preclinical RCC orthotopic xenograft mouse model revealed its efficacy in suppression of RCC progression. These results together identified signals by AR-suppressed miRNA-145 as a key player in the RCC progression via regulating HIF2α/VEGF/MMP9/CCND1 expression levels. Blockade of the newly identified signal by AR inhibition or miRNA-145 mimics has promising therapeutic benefit to suppress RCC progression.
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Affiliation(s)
- Yuan Chen
- Sex Hormone Research Center, Department of Urology, Tongji Medical College/Hospital, Huazhong University of Science and Technology, Wuhan, China.,George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology and Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
| | - Yin Sun
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology and Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
| | - Qun Rao
- Department of Gynaecology and Obstetrics, Tongji Medical College/Hospital, Huazhong University of Science and Technology, Wuhan, China.,George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology and Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
| | - Hua Xu
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology and Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
| | - Lei Li
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology and Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
| | - Chawnshang Chang
- George Whipple Lab for Cancer Research, Departments of Pathology, Urology, and Radiation Oncology and Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA.,Sex Hormone Research Center, China Medical University/Hospital, Taichung, Taiwan
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83
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Boloix A, París-Coderch L, Soriano A, Roma J, Gallego S, Sánchez de Toledo J, Segura MF. Novel micro RNA-based therapies for the treatment of neuroblastoma. An Pediatr (Barc) 2016. [DOI: 10.1016/j.anpede.2015.07.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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84
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Cui C, Ye X, Chopp M, Venkat P, Zacharek A, Yan T, Ning R, Yu P, Cui G, Chen J. miR-145 Regulates Diabetes-Bone Marrow Stromal Cell-Induced Neurorestorative Effects in Diabetes Stroke Rats. Stem Cells Transl Med 2016; 5:1656-1667. [PMID: 27460851 PMCID: PMC5189645 DOI: 10.5966/sctm.2015-0349] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 05/13/2016] [Indexed: 01/08/2023] Open
Abstract
In rats with type 1 diabetes mellitus (T1DM) subject to stroke, the therapeutic effects and underlying mechanisms of action of bone-marrow stromal cells (BMSCs) derived from T1DM rats (DM-BMSCs) and BMSCs derived from normal rats (Nor-BMSCs) were compared. In vitro and in vivo, DM-BMSCs exhibited decreased miR-145 expression. In T1DM rats, DM-BMSC treatment significantly improved functional outcome and increased vascular and white matter remodeling. However, overexpression of miR-145 in DM-BMSCs attenuates DM-BMSC-induced neurorestorative effects in T1DM stroke rats. In rats with type 1 diabetes (T1DM), the therapeutic effects and underlying mechanisms of action of stroke treatment were compared between bone-marrow stromal cells (BMSCs) derived from T1DM rats (DM-BMSCs) and BMSCs derived from normal rats (Nor-BMSCs). The novel role of microRNA-145 (miR-145) in mediating DM-BMSC treatment-induced benefits was also investigated. T1DM rats (n = 8 per group) underwent 2 hours of middle cerebral artery occlusion (MCAo) and were treated 24 hours later with the one of the following (5 × 106 cells administered i.v.): (a) phosphate-buffered saline (PBS); (b) Nor-BMSCs; (c) DM-BMSCs; (d) DM-BMSCs with miR-145 overexpression (miR-145+/+DM-BMSCs); or (e) Nor-BMSCs with miR-145 knockdown. Evaluation of functional outcome, vascular and white-matter remodeling and microRNA expression was made, and in vitro studies were performed. In vitro, DM-BMSCs exhibited decreased miR-145 expression and increased survival compared with Nor-BMSCs. Capillary tube formation and axonal outgrowth in cultured primary cortical neurons were significantly increased by DM-BMSC-conditioned medium compared with Nor-BMSCs, and significantly decreased by miR-145+/+DM-BMSC-conditioned medium compared with DM-BMSCs. In T1DM rats in which stroke had been induced (T1DM stroke rats), DM-BMSC treatment significantly improved functional outcome, increased vascular and white matter remodeling, decreased serum miR-145 expression, and increased expression of the miR-145 target genes adenosine triphosphate-binding cassette transporter 1 (ABCA1) and insulin-like growth factor 1 receptor (IGFR1), compared with Nor-BMSCs or PBS treatment. However, miR-145+/+DM-BMSCs significantly increased serum miR-145 expression and decreased brain ABCA1 and IGFR1 expression, as well as attenuated DM-BMSC-induced neurorestorative effects in T1DM-MCAo rats. DM-BMSCs exhibited decreased miR-145 expression. In T1DM-MCAo rats, DM-BMSC treatment improved functional outcome and promoted neurorestorative effects. The miR-145/ABCA1/IGFR1 pathway may contribute to the enhanced DM-BMSCs’ functional and neurorestorative effects in T1DM stroke rats. Significance In rats with type 1 diabetes (T1DM), the therapeutic effects and underlying mechanisms of action of stroke treatment were compared between bone-marrow stromal cells (BMSCs) derived from T1DM rats (DM-BMSCs) and BMSCs derived from normal rats (Nor-BMSCs). In vitro, DM-BMSCs and derived exosomes decreased miR-145 expression and increased DM-BMSC survival, capillary tube formation, and axonal outgrowth, compared with Nor-BMSCs; these effects were decreased by DM-BMSCs in which miR-145 was overexpressed. In vivo, compared with Nor-BMSC or phosphate-buffered saline treatment, DM-BMSC treatment improved functional outcome and vascular and white matter remodeling, decreased serum miR-145 expression, and increased expression of the miR-145 target genes ABCA1 and IGFR1. microRNA-145 mediated the benefits induced by DM-BMSC treatment.
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Affiliation(s)
- Chengcheng Cui
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, People's Republic of China
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan, USA
| | - Xinchun Ye
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, People's Republic of China
| | - Michael Chopp
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan, USA
- Department of Physics, Oakland University, Rochester, Michigan, USA
| | - Poornima Venkat
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan, USA
- Department of Physics, Oakland University, Rochester, Michigan, USA
| | - Alex Zacharek
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan, USA
| | - Tao Yan
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan, USA
| | - Ruizhou Ning
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan, USA
| | - Peng Yu
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan, USA
| | - Guiyun Cui
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, People's Republic of China
| | - Jieli Chen
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan, USA
- Department of Geriatrics, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
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85
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Targeting oncomiRNAs and mimicking tumor suppressor miRNAs: Νew trends in the development of miRNA therapeutic strategies in oncology (Review). Int J Oncol 2016; 49:5-32. [PMID: 27175518 PMCID: PMC4902075 DOI: 10.3892/ijo.2016.3503] [Citation(s) in RCA: 164] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 04/29/2016] [Indexed: 12/16/2022] Open
Abstract
MicroRNA (miRNA or miR) therapeutics in cancer are based on targeting or mimicking miRNAs involved in cancer onset, progression, angiogenesis, epithelial-mesenchymal transition and metastasis. Several studies conclusively have demonstrated that miRNAs are deeply involved in tumor onset and progression, either behaving as tumor-promoting miRNAs (oncomiRNAs and metastamiRNAs) or as tumor suppressor miRNAs. This review focuses on the most promising examples potentially leading to the development of anticancer, miRNA-based therapeutic protocols. The inhibition of miRNA activity can be readily achieved by the use of miRNA inhibitors and oligomers, including RNA, DNA and DNA analogues (miRNA antisense therapy), small molecule inhibitors, miRNA sponges or through miRNA masking. On the contrary, the enhancement of miRNA function (miRNA replacement therapy) can be achieved by the use of modified miRNA mimetics, such as plasmid or lentiviral vectors carrying miRNA sequences. Combination strategies have been recently developed based on the observation that i) the combined administration of different antagomiR molecules induces greater antitumor effects and ii) some anti-miR molecules can sensitize drug-resistant tumor cell lines to therapeutic drugs. In this review, we discuss two additional issues: i) the combination of miRNA replacement therapy with drug administration and ii) the combination of antagomiR and miRNA replacement therapy. One of the solid results emerging from different independent studies is that miRNA replacement therapy can enhance the antitumor effects of the antitumor drugs. The second important conclusion of the reviewed studies is that the combination of anti-miRNA and miRNA replacement strategies may lead to excellent results, in terms of antitumor effects.
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86
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Li D, Zhao X, Xiao Y, Mei H, Pu J, Xiang X, Jiao W, Song H, Qu H, Huang K, Zheng L, Tong Q. Intelectin 1 suppresses tumor progression and is associated with improved survival in gastric cancer. Oncotarget 2016; 6:16168-82. [PMID: 25965823 PMCID: PMC4599263 DOI: 10.18632/oncotarget.3753] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 04/06/2015] [Indexed: 12/30/2022] Open
Abstract
Recent evidence shows the emerging roles of intelectin 1 (ITLN1), a secretory lectin, in human cancers. Our previous studies have implicated the potential roles of ITLN1 in the aggressiveness of gastric cancer. Herein, we investigated the functions, downstream targets, and clinical significance of ITLN1 in the progression of gastric cancer. We demonstrated that ITLN1 increased the levels of hepatocyte nuclear factor 4 alpha (HNF4α), resulting in suppression of nuclear translocation and transcriptional activity of β-catenin in gastric cancer cells. Mechanistically, ITLN1 attenuated the activity of nuclear factor-kappa B, a transcription factor repressing the HNF4α expression, in gastric cancer cells through inactivating the phosphoinositide 3-kinase/AKT/Ikappa B kinase signaling. Gain- and loss-of-function studies demonstrated that ITLN1 suppressed the growth, invasion, and metastasis of gastric cancer cells in vitro and in vivo. In addition, restoration of HNF4α expression prevented the gastric cancer cells from ITLN1-mediated changes in these biological features. In clinical gastric cancer tissues, HNF4α expression was positively correlated with that of ITLN1. Patients with high ITLN1 or HNF4α expression had greater survival probability. Taken together, these data indicate that ITLN1 suppresses the progression of gastric cancer through up-regulation of HNF4α, and is associated with improved survival in patients with gastric cancer.
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Affiliation(s)
- Dan Li
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Xiang Zhao
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Yong Xiao
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Hong Mei
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Jiarui Pu
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Xuan Xiang
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Wanju Jiao
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Huajie Song
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Hongxia Qu
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China.,Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Liduan Zheng
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China.,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Qiangsong Tong
- Department of Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China.,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
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87
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Stigliani S, Scaruffi P, Lagazio C, Persico L, Carlini B, Varesio L, Morandi F, Morini M, Gigliotti AR, Esposito MR, Viscardi E, Cecinati V, Conte M, Corrias MV. Deregulation of focal adhesion pathway mediated by miR-659-3p is implicated in bone marrow infiltration of stage M neuroblastoma patients. Oncotarget 2016; 6:13295-308. [PMID: 25980492 PMCID: PMC4537015 DOI: 10.18632/oncotarget.3745] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 04/08/2015] [Indexed: 11/25/2022] Open
Abstract
To get insights on the metastatic process of human neuroblastoma (NB), the miRNA expression profile of bone marrow (BM)-infiltrating cells has been determined and compared to that of primary tumors.Twenty-two BM-infiltrating cells, 22 primary tumors, and 4 paired samples from patients with metastatic NB aged > 12 months were analyzed for the expression of 670 miRNAs by stem-loop RT-qPCR. The miRNAs whose expression was significantly different were subjected to selection criteria, and 20 selected miRNAs were tested in 10 additional BM-infiltrating cells and primary tumors. Among the miRNAs confirmed to be differentially expressed, miR-659-3p was further analyzed. Transfection of miR-659-3p mimic and inhibitor demonstrated the specific suppression and over-expression, respectively, of the miR-659-3p target gene CNOT1, a regulator of transcription of genes containing AU-rich element (ARE) sequence. Among the ARE-containing genes, miR-659-3p mimic and inhibitor specifically modified the expression of AKT3, BCL2, CYR61 and THSB2, belonging to the focal adhesion pathway. Most importantly, in BM-infiltrating cells CNOT1 expression was significantly higher, and that of AKT3, BCL2, THSB2 and CYR61 was significantly lower than in primary tumors. Thus, our study suggests a role of the focal adhesion pathway, regulated by miR-659-3p through CNOT1, in the human NB metastatic process.
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Affiliation(s)
- Sara Stigliani
- U.O.S. Physiopathology of Human Reproduction, IRCCS A.O.U. San Martino-IST, Genova, Italy
| | - Paola Scaruffi
- U.O.S. Physiopathology of Human Reproduction, IRCCS A.O.U. San Martino-IST, Genova, Italy
| | | | - Luca Persico
- Department of Economy, University of Genoa, Genova, Italy
| | - Barbara Carlini
- Laboratory of Oncology, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Luigi Varesio
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Fabio Morandi
- Laboratory of Oncology, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Martina Morini
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Anna Rita Gigliotti
- Epidemiology, Biostatistics and Committees Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Maria Rosaria Esposito
- Neuroblastoma Laboratory, Pediatric Research Institute, Fondazione Città della Speranza, Padova, Italy
| | - Elisabetta Viscardi
- Pediatric Hematology and Oncology Division, Padova University Hospital, Padova, Italy
| | - Valerio Cecinati
- UOS Divisione Oncoematologia Pediatrica, Ospedale Civile di Pescara, Pescara, Italy
| | - Massimo Conte
- Oncology Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy
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88
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Tao J, Ding WF, Che XH, Chen YC, Chen F, Chen XD, Ye XL, Xiong SB. Optimization of a cationic liposome-based gene delivery system for the application of miR-145 in anticancer therapeutics. Int J Mol Med 2016; 37:1345-54. [PMID: 26986502 DOI: 10.3892/ijmm.2016.2530] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 02/03/2016] [Indexed: 11/05/2022] Open
Abstract
In order to improve the delivery efficiency of microRNA (miRNA or miR)-145, the present study examined several factors which may affect cationic liposome (CL)-based transfection, including the hydration medium used for the preparation of liposomes, the quantity of the plasmid, the molar ratio of N-[1-(2,3-dioleoyloxy)propyl]-N,N,N-trimethylammonium chloride (DOTAP)/cholesterol (chol), or DOTAP/chol, and the weight ratio of DOTAP/DNA. In order to enhance the transfection efficiency, protamine was selected as a DNA-condensing agent to form liposome‑protamine‑DNA (LPD) ternary complexes. An agarose gel retardation assay was used to examine the DNA binding affinity of the CLs. Following transfection, GFP fluorescence images were captured and flow cytometry was performed to determine the transfection efficiency. Furthermore, an MTT assay was performed to determine the cytotoxicity of the liposome complexes. The final optimal conditions were as follows: 5% glucose as the hydration medium, a molar ratio of DOTAP/chol at 3:1 for the preparation of CLs, a weight ratio of DOTAP/protamine/DNA of 3:0.5:1, with 8 µg plasmid added for the preparation of the LPD complexes. In vitro, the LPD complexes exhibited an enhanced transfection efficiency and low cytotoxicity, which indicated that the presented LPD vector enhanced the transfection efficiency of the CLs. The HepG2 cells were found to have the lowest expression levels of miR‑145 out of the cell lines tested (A549, BGC-823, HepG2, HeLa, LoVo and MCF-7). Following the transient transfection of the HepG2 cells with miR‑145, the results revealed that the overexpression of miR‑145 inhibited the proliferation of the HepG2 cells and downregulated the expression of cyclin-dependent kinase 6 (CDK6), cyclinD1, c-myc, and Sp1 transcription factor (Sp1). In conclusion, in this study, we optimized a liposome‑based delivery system for the efficient delivery of miR‑145 into cancer cells. This may provide a foundation for further research into the use of miR‑145 in anticancer therapeutics.
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Affiliation(s)
- Jin Tao
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, P.R. China
| | - Wei-Feng Ding
- Medical Center Laboratory, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226000, P.R. China
| | - Xiao-Hang Che
- Division of Medicine and Pharmacology, Ningbo Institute of Medical Sciences, Ningbo University, Ningbo, Zhejiang 315020, P.R. China
| | - Yi-Chen Chen
- Division of Medicine and Pharmacology, Ningbo Institute of Medical Sciences, Ningbo University, Ningbo, Zhejiang 315020, P.R. China
| | - Fang Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, P.R. China
| | - Xiao-Dong Chen
- Division of Medicine and Pharmacology, Ningbo Institute of Medical Sciences, Ningbo University, Ningbo, Zhejiang 315020, P.R. China
| | - Xiao-Lei Ye
- Division of Medicine and Pharmacology, Ningbo Institute of Medical Sciences, Ningbo University, Ningbo, Zhejiang 315020, P.R. China
| | - Su-Bin Xiong
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310032, P.R. China
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89
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Welten S, Goossens E, Quax P, Nossent A. The multifactorial nature of microRNAs in vascular remodelling. Cardiovasc Res 2016; 110:6-22. [DOI: 10.1093/cvr/cvw039] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/07/2016] [Indexed: 12/22/2022] Open
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90
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Abstract
Recent investigations have highlighted the importance of the non-coding genome in regions of hypoxia in tumours. Such regions are frequently found in solid tumours, and are associated with worse patient survival and therapy resistance. Hypoxia stabilises the transcription factors, hypoxia inducible factors (HIF1α and HIF2α) which coordinate transcriptomic changes that occur in hypoxia. The changes in gene expression induced by HIF1α and HIF2α contribute to many of the hallmarks of cancer phenotypes and enable tumour growth, survival and invasion in the hypoxic tumour microenvironment. Non-coding RNAs, in particular microRNAs (miRNAs), which regulate mRNA stability and translation, and long-non-coding RNAs (lncRNAs), which have diverse functions including chromatin modification and transcriptional regulation, are also important in enabling the key hypoxia regulated processes. They have roles in the regulation of metabolism, angiogenesis, autophagy, invasion and metastasis in the hypoxic microenvironment. Furthermore, HIF1α and HIF2α expression and stabilisation are also regulated by both miRNAs and lncRNAs. Here we review the recent developments in the expression, regulation and functions of miRNAs, lncRNAs and other non-coding RNA classes in tumour hypoxia.
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Affiliation(s)
- Hani Choudhry
- Department of Biochemistry, Faculty of Science, Center of Innovation in Personalized Medicine, King Fahd Center for Medical Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adrian L Harris
- Molecular Oncology Laboratories, Department of Oncology, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK.
| | - Alan McIntyre
- Cancer Biology, Division of Cancer and Stem Cells, QMC, University of Nottingham, Nottingham, NG7 2UH, UK.
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91
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Xu W, Luo F, Sun B, Ye H, Li J, Shi L, Liu Y, Lu X, Wang B, Wang Q, Liu Q, Zhang A. HIF-2α, acting via miR-191, is involved in angiogenesis and metastasis of arsenite-transformed HBE cells. Toxicol Res (Camb) 2016; 5:66-78. [PMID: 30090327 PMCID: PMC6060623 DOI: 10.1039/c5tx00225g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 11/02/2015] [Indexed: 12/11/2022] Open
Abstract
Arsenic is a well established human carcinogen that causes diseases of the lung. Some studies have suggested that hypoxia-inducible factors (HIFs) and microRNAs (miRNAs) are involved in human lung cancer; however, their molecular mechanisms that causally contribute to arsenite-caused malignant transformation of cells remain unclear. To elucidate the mechanisms of angiogenesis and metastasis of lung cancer caused by arsenite, we investigated the role of HIF-2α regulation of miRNA-191 (miR-191) in the angiogenic and metastatic properties of human bronchial epithelial (HBE) cells transformed by arsenite. In HBE cells, HIF-2α binds to the hypoxia response element (HRE) in the promoter region of miR-191 and initiates transcription of miR-191. Blocking of HIF-2α with siRNA inhibited the up-regulation of miR-191, Wilms' tumor 1 (WT1) protein, matrix metalloproteinase 9 (MMP-9), vascular endothelial growth factor (VEGF), and the down-regulation of brain acid-soluble protein 1 (BASP1). In arsenite-transformed HBE (T-HBE) cells, down-regulation of HIF-2α by siRNA blocked the process of angiogenesis and decreased their neoplastic properties and metastatic capacity, which were reversed by over-expression of miR-191 or by up-regulating WT1. Thus, HIF-2α up-regulates WT1 via miR-191, both of which are involved in the angiogenesis and metastasis of T-HBE cells. The results present a better understanding of the processes involved in lung cancer caused by arsenite exposure.
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Affiliation(s)
- Wenchao Xu
- Institute of Toxicology , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China
- The Key Laboratory of Modern Toxicology , Ministry of Education , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China . ; ; Tel: +86-25-8686-8424
| | - Fei Luo
- Institute of Toxicology , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China
- The Key Laboratory of Modern Toxicology , Ministry of Education , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China . ; ; Tel: +86-25-8686-8424
| | - Baofei Sun
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , School of Public Health , Guiyang Medical University , Guiyang 550025 , Guizhou , People's Republic of China . ; ; Tel: +86-851-8841-6171
| | - Hua Ye
- School of Medicine , Yangzhou University , Yangzhou 225009 , Jiangsu , People's Republic of China
| | - Jun Li
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , School of Public Health , Guiyang Medical University , Guiyang 550025 , Guizhou , People's Republic of China . ; ; Tel: +86-851-8841-6171
| | - Le Shi
- Institute of Toxicology , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China
- The Key Laboratory of Modern Toxicology , Ministry of Education , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China . ; ; Tel: +86-25-8686-8424
| | - Yi Liu
- Institute of Toxicology , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China
- The Key Laboratory of Modern Toxicology , Ministry of Education , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China . ; ; Tel: +86-25-8686-8424
| | - Xiaolin Lu
- Institute of Toxicology , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China
- The Key Laboratory of Modern Toxicology , Ministry of Education , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China . ; ; Tel: +86-25-8686-8424
| | - Bairu Wang
- Institute of Toxicology , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China
- The Key Laboratory of Modern Toxicology , Ministry of Education , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China . ; ; Tel: +86-25-8686-8424
| | - Qingling Wang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , School of Public Health , Guiyang Medical University , Guiyang 550025 , Guizhou , People's Republic of China . ; ; Tel: +86-851-8841-6171
| | - Qizhan Liu
- Institute of Toxicology , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China
- The Key Laboratory of Modern Toxicology , Ministry of Education , School of Public Health , Nanjing Medical University , Nanjing 211166 , Jiangsu , People's Republic of China . ; ; Tel: +86-25-8686-8424
| | - Aihua Zhang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , School of Public Health , Guiyang Medical University , Guiyang 550025 , Guizhou , People's Republic of China . ; ; Tel: +86-851-8841-6171
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92
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Xue M, Zhao L, Yang F, Li Z, Li G. MicroRNA‑145 inhibits the malignant phenotypes of gastric carcinoma cells via downregulation of fascin 1 expression. Mol Med Rep 2015; 13:1033-9. [PMID: 26647829 DOI: 10.3892/mmr.2015.4609] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 11/05/2015] [Indexed: 11/06/2022] Open
Abstract
MicroRNA (miR)‑145 has been demonstrated to act as a tumor suppressor, and deregulation of fascin 1 (FSCN1) has been observed in several types of human malignancy, including gastric carcinoma. However, the molecular mechanism underlying the function of miR‑145, specifically its targets in gastric carcinoma have yet to be fully elucidated. In the present study, downregulation of miR‑145 and upregulation of FSCN1 was identified in gastric carcinoma cell lines, compared with normal gastric mucosal epithelial cells. A luciferase reporter assay demonstrated that miR‑145 was able to bind to the 3'‑untranslated region of FSCN1 mRNA. Overexpression of miR‑145 led to a significant decrease in FSCN1 expression levels, whereas knockdown of miR‑145 resulted in increased FSCN1 expression levels in gastric carcinoma cells. Furthermore, overexpression of miR‑145 inhibited proliferation, migration and invasion in gastric carcinoma cells. Similar effects were also observed in gastric carcinoma cells transfected with FSCN1 small interfering RNA. In addition, overexpression of FSCN1 reversed the suppressive effects of miR‑145 upregulation on proliferation, migration and invasion in gastric carcinoma cells, suggesting that FSCN1 is indeed involved in the miR‑145‑mediated malignant phenotype of gastric carcinoma cells. The present study revealed an anti‑oncogenic role of miR‑145 in gastric carcinoma via inhibition of FSCN1, and suggested that miR‑145 may be used for the treatment of gastric carcinoma.
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Affiliation(s)
- Minghui Xue
- Department of General Surgery, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Lunde Zhao
- Department of General Surgery, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Fang Yang
- Department of Gastroenterology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Zhenjuan Li
- Department of Gastroenterology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Guangyan Li
- Department of Gastroenterology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
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93
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CTCF cooperates with noncoding RNA MYCNOS to promote neuroblastoma progression through facilitating MYCN expression. Oncogene 2015; 35:3565-76. [PMID: 26549029 DOI: 10.1038/onc.2015.422] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 07/26/2015] [Accepted: 10/05/2015] [Indexed: 12/11/2022]
Abstract
Previous studies have indicated the important roles of MYCN in tumorigenesis and progression of neuroblastoma (NB), the most common extracranial solid tumor derived from neural crest in childhood. However, the regulatory mechanisms of MYCN expression in NB still remain largely unknown. In this study, through mining public microarray databases and analyzing the cis-regulatory elements and chromatin immunoprecipitation data sets, we identified CCCTC-binding factor (CTCF) as a crucial transcription factor facilitating the MYCN expression in NB. RNA immunoprecipitation, RNA electrophoretic mobility shift assay, RNA pull down and in vitro binding assay indicated the physical interaction between CTCF and MYCN opposite strand (MYCNOS), a natural noncoding RNA surrounding the MYNC promoter. Gain- and loss-of-function studies revealed that MYCNOS facilitated the recruitment of CTCF to its binding sites within the MYCN promoter to induce chromatin remodeling, resulting in enhanced MYCN levels and altered downstream gene expression, in cultured NB cell lines. CTCF cooperated with MYCNOS to suppress the differentiation and promote the growth, invasion and metastasis of NB cells in vitro and in vivo. In clinical NB tissues and cell lines, CTCF and MYCNOS were upregulated and positively correlated with MYCN expression. CTCF was an independent prognostic factor for unfavorable outcome of NB, and patients with high MYCNOS expression had lower survival probability. Taken together, these results demonstrate that CTCF cooperates with noncoding RNA MYCNOS to exhibit oncogenic activity that affects the aggressiveness and progression of NB through transcriptional upregulation of MYCN.
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94
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Lin T, Zhou F, Zhou H, Pan X, Sun Z, Peng G. MicroRNA-378g enhanced radiosensitivity of NPC cells partially by targeting protein tyrosine phosphatase SHP-1. Int J Radiat Biol 2015; 91:859-66. [PMID: 26473472 DOI: 10.3109/09553002.2015.1096028] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSE To investigate the influence of microRNA-378g (miR-378g) on radiosensitivity and metastasis of nasopharyngeal carcinoma cells and study how miR-378g regulated Src homology region 2 domain-containing phosphatase-1 (SHP-1) expression. MATERIALS AND METHODS Polymerase chain reaction (PCR) was used to detect the expression level of miR-378g and SHP-1 mRNA in different nasopharyngeal carcinoma (NPC) cell lines. MiR-378g mimics were transfected into NPC cells and radiosensitivity was determined by colony formation assay. Cell apoptotic rate was determined by flow cytometry analysis. Cell invasion was examined by transwell assay. SHP-1 transcriptional activity was examined by luciferase assay. SHP-1 expression level was determined by Western blot. Lentivirus containing SHP-1 gene and miR-378g mimics were co-transfected into NPC cells and radiosensitivity and metastasis were detected by colony formation assay and transwell assay again. RESULTS Expression of miR-378g and SHP-1 mRNA was negatively correlated in NPC cell lines. MiR-378g mimics enhanced radiosensitivity, promoted apoptosis and decreased invasion in NPC cells. SHP-1 expression was inhibited by miR-378g mimics. Luciferase reporter assay showed that miR-378g directly targeted SHP-1 by binding to 3' untranslated region (3'UTR) of SHP-1 mRNA. Overexpression of SHP-1 partially inversed the effect of miR-378g mimics on radiosensitivity, but had no effect on cell invasion. CONCLUSION MiR-378g enhanced radiosensitivity partially by targeting SHP-1 in NPC cells. Cell invasion was also partially inhibited by miR-378g, but the effect was not mediated by SHP-1.
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Affiliation(s)
- Ting Lin
- a B Ultrasonic Room, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , Hubei, China
| | - Fangzheng Zhou
- b Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , Hubei , China
| | - Haibo Zhou
- b Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , Hubei , China
| | - Xiaofen Pan
- b Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , Hubei , China.,c Cancer Center, Affiliated Hospital of Guangdong Medical College , Zhanjiang , Guangdong , China
| | - Ziyi Sun
- b Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , Hubei , China
| | - Gang Peng
- b Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , Hubei , China
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95
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Das AV, Pillai RM. Implications of miR cluster 143/145 as universal anti-oncomiRs and their dysregulation during tumorigenesis. Cancer Cell Int 2015; 15:92. [PMID: 26425114 PMCID: PMC4588501 DOI: 10.1186/s12935-015-0247-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 09/22/2015] [Indexed: 02/07/2023] Open
Abstract
Tumorigenesis is a multistep process, de-regulated due to the imbalance of oncogenes as well as anti-oncogenes, resulting in disruption of tissue homeostasis. In many cases the effect of oncogenes and anti-oncogenes are mediated by various other molecules such as microRNAs. microRNAs are small non-coding RNAs established to post-transcriptionally regulate more than half of the protein coding genes. miR cluster 143/145 is one such cancer-related microRNA cluster which is down-regulated in most of the cancers and is able to hinder tumorigenesis by targeting tumor-associated genes. The fact that they could sensitize drug-resistant cancer cells by targeting multidrug resistant genes makes them potent tools to target cancer cells. Their low levels precede events which lead to cancer progression and therefore could be considered also as biomarkers to stage the disease. Interestingly, evidence suggests the existence of several in vivo mechanisms by which this cluster is differentially regulated at the molecular level to keep their levels low in cancer. In this review, we summarize the roles of miR cluster 143/145 in cancer, their potential prognostic applications and also their regulation during tumorigenesis.
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Affiliation(s)
- Ani V Das
- Cancer Research Program-9, Rajiv Gandhi Centre for Biotechnology, Thycaud.P.O., Thiruvananthapuram-14, Kerala India
| | - Radhakrishna M Pillai
- Cancer Research Program-9, Rajiv Gandhi Centre for Biotechnology, Thycaud.P.O., Thiruvananthapuram-14, Kerala India
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96
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Boloix A, París-Coderch L, Soriano A, Roma J, Gallego S, Sánchez de Toledo J, Segura MF. [Novel micro RNA-based therapies for the treatment of neuroblastoma]. An Pediatr (Barc) 2015; 85:109.e1-109.e6. [PMID: 26323526 DOI: 10.1016/j.anpedi.2015.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 07/12/2015] [Indexed: 12/31/2022] Open
Abstract
Neuroblastoma (NB) is the most common solid tumour in children and adolescents, and accounts for up to 15% of all cancer deaths in this group. It originates in the sympathetic nervous system, and its behaviour can be very aggressive and become resistant to current treatments. A review is presented, summarising the new alternative therapies based on epigenetics, i.e., modulators of gene expression, such as microRNAs and their potential application in the clinical practice of NB treatment.
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Affiliation(s)
- Ariadna Boloix
- Grupo de Investigación Traslacional en el Cáncer de la infancia y adolescencia, Institut de Recerca, Vall d'Hebron, Barcelona, España
| | - Laia París-Coderch
- Grupo de Investigación Traslacional en el Cáncer de la infancia y adolescencia, Institut de Recerca, Vall d'Hebron, Barcelona, España
| | - Aroa Soriano
- Grupo de Investigación Traslacional en el Cáncer de la infancia y adolescencia, Institut de Recerca, Vall d'Hebron, Barcelona, España
| | - Josep Roma
- Grupo de Investigación Traslacional en el Cáncer de la infancia y adolescencia, Institut de Recerca, Vall d'Hebron, Barcelona, España
| | - Soledad Gallego
- Grupo de Investigación Traslacional en el Cáncer de la infancia y adolescencia, Institut de Recerca, Vall d'Hebron, Barcelona, España; Servicio de Oncología y Hematología Pediátricas, Hospital Universitario Vall d'Hebron, Barcelona, España
| | - Josep Sánchez de Toledo
- Grupo de Investigación Traslacional en el Cáncer de la infancia y adolescencia, Institut de Recerca, Vall d'Hebron, Barcelona, España; Servicio de Oncología y Hematología Pediátricas, Hospital Universitario Vall d'Hebron, Barcelona, España
| | - Miguel F Segura
- Grupo de Investigación Traslacional en el Cáncer de la infancia y adolescencia, Institut de Recerca, Vall d'Hebron, Barcelona, España.
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97
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ZHANG YINGYING, YANG XUCHENG, WU HAIJUN, ZHOU WEIBIN, LIU ZHENZHEN. MicroRNA-145 inhibits migration and invasion via inhibition of fascin 1 protein expression in non-small-cell lung cancer cells. Mol Med Rep 2015; 12:6193-8. [DOI: 10.3892/mmr.2015.4163] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 05/13/2015] [Indexed: 11/05/2022] Open
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98
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Rojas F, Hernandez ME, Silva M, Li L, Subramanian S, Wilson MJ, Liu P. The Oncogenic Response to MiR-335 Is Associated with Cell Surface Expression of Membrane-Type 1 Matrix Metalloproteinase (MT1-MMP) Activity. PLoS One 2015. [PMID: 26204513 PMCID: PMC4512721 DOI: 10.1371/journal.pone.0132026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
MicroRNA miR-335 has been reported to have both tumor suppressor and oncogenic activities. In order to determine possible tissue and cell type differences in response to miR-335, we examined the effect of miR-335 on cell expression of MT1-MMP, a proteinase commonly expressed in tumors and associated with cell proliferation and migration. miR-335 increased cell surface expression of MT1-MMP in fibrosarcoma HT-1080 and benign prostate BPH-1 cells, but not in prostate LNCaP or breast MCF-7 tumor cells. miR-335 stimulated proliferation and cell migration in a wound healing in vitro assay in HT-1080, BPH-1, and U87 glioblastoma cells, cells which demonstrated significant cell surface expression of MT1-MMP. In contrast, miR-335 did not affect proliferation or migration in cells without a prominent plasma membrane associated MT1-MMP activity. Our data suggest that differences in response to miR-335 by tumor cells may lie in part in the mechanism of regulation of MT1-MMP production.
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Affiliation(s)
- Fausto Rojas
- Centro de Investigaciones Cerebrales, Universidad Veracruzana, Xalapa, Veracruz, Mexico
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Maria E. Hernandez
- Centro de Investigaciones Cerebrales, Universidad Veracruzana, Xalapa, Veracruz, Mexico
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Milagros Silva
- Centro de Investigaciones Cerebrales, Universidad Veracruzana, Xalapa, Veracruz, Mexico
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Lihua Li
- Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Subbaya Subramanian
- Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Michael J. Wilson
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, United States of America
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
- Department of Pharmacology, University of Minnesota, Minneapolis, Minnesota, United States of America
- Minneapolis VA Medical Center, Minneapolis, Minnesota, United States of America
- * E-mail:
| | - Ping Liu
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States of America
- Department of Pharmacology, University of Minnesota, Minneapolis, Minnesota, United States of America
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99
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Wang TY, Zhang QQ, Zhang X, Sun QL, Zhao CP, Wang XY. The effect of recombinant lentiviral vector encoding miR-145 on human esophageal cancer cells. Tumour Biol 2015; 36:9733-8. [PMID: 26156802 DOI: 10.1007/s13277-015-3743-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 06/30/2015] [Indexed: 01/23/2023] Open
Abstract
miR-145, a newly identified microRNA molecule, is hypothesized to function as a tumor suppressor, but this activity has not been investigated in esophageal l carcinoma (EC). The aim of this study was to investigate the effect of miR-145 on the biological features of EC cells. miR-145 was obtained using PCR technology and cloned into the lentiviral vector, pLVX-IRES-ZsGreen1, to construct the resulting vector, pLVX-IZ-miR-145. The vector was packaged, the viral titer was tested, and ECA109 cells were infected with the optimal viral titer. Cells that were stably transfected with miR-145 were screened. Flow cytometry was used to analyze enhanced green fluorescence protein gene expression, and to measure cell apoptosis and cell cycle. miR-145 expression was detected by real-time fluorescent quantitative PCR. Furthermore, cell proliferation was assayed using CCK-8 assay. The pLVX-IZ-miR-145 vector was successfully constructed, and the viral titer achieved up to 5.0 × 10(8) TU/mL. The transfection efficiency was 90 %. Compared to the control group, the expression level of miR-145 in the transfected group was significantly higher (185-fold, P < 0.05). miR-145 overexpression significantly inhibited esophageal cancer cell proliferation (P < 0.05). Moreover, the number of cells at the G2/M stage, as well as the cell apoptotic rate, in the miR-145-transfected group was significantly increased (P < 0.05). Our study reveals that overexpression of miR-145 inhibits cell proliferation, increases apoptosis, and influences the cell cycle progression of EC cell.
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Affiliation(s)
- Tian-Yun Wang
- Department of Biochemistry and Molecular Biology, Xinxiang Medical University, Jinsui Road, Xinxiang, 453003, China.
| | - Qing-Qing Zhang
- Department of Psychosomatic Medicine, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, 453002, China
| | - Xi Zhang
- Department of Biochemistry and Molecular Biology, Xinxiang Medical University, Jinsui Road, Xinxiang, 453003, China
| | - Qiu-Li Sun
- Department of Biochemistry and Molecular Biology, Xinxiang Medical University, Jinsui Road, Xinxiang, 453003, China
| | - Chun-Peng Zhao
- Department of Biochemistry and Molecular Biology, Xinxiang Medical University, Jinsui Road, Xinxiang, 453003, China
| | - Xiao-Yin Wang
- Department of Biochemistry and Molecular Biology, Xinxiang Medical University, Jinsui Road, Xinxiang, 453003, China
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100
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Khan FH, Pandian V, Ramraj S, Aravindan S, Herman TS, Aravindan N. Reorganization of metastamiRs in the evolution of metastatic aggressive neuroblastoma cells. BMC Genomics 2015; 16:501. [PMID: 26148557 PMCID: PMC4491873 DOI: 10.1186/s12864-015-1642-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 05/19/2015] [Indexed: 12/19/2022] Open
Abstract
Background MetastamiRs have momentous clinical relevance and have been correlated with disease progression in many tumors. In this study, we identified neuroblastoma metastamiRs exploiting unique mouse models of favorable and high-risk metastatic human neuroblastoma. Further, we related their deregulation to the modulation of target proteins and established their association with clinical outcomes. Results Whole genome miRNA microarray analysis identified 74 metastamiRs across the manifold of metastatic tumors. RT-qPCR on select miRNAs validated profile expression. Results from bio-informatics across the ingenuity pathway, miRCancer, and literature data-mining endorsed the expression of these miRNAs in multiple tumor systems and showed their role in metastasis, identifying them as metastamiRs. Immunoblotting and TMA-IHC analyses revealed alterations in the expression/phosphorylation of metastamiRs’ targets, including ADAMTS-1, AKT1/2/3, ASK1, AURKβ, Birc1, Birc2, Bric5, β-CATENIN, CASP8, CD54, CDK4, CREB, CTGF, CXCR4, CYCLIN-D1, EGFR, ELK1, ESR1, CFOS, FOSB, FRA, GRB10, GSK3β, IL1α, JUND, kRAS, KRTAP1, MCP1, MEGF10, MMP2, MMP3, MMP9, MMP10, MTA2, MYB, cMYC, NF2, NOS3, P21, pP38, PTPN3, CLEAVED PARP, PKC, SDF-1β, SEMA3D, SELE, STAT3, TLR3, TNFα, TNFR1, and VEGF in aggressive cells ex vivo and in a manifold of metastatic tumors in vivo. miRNA mimic (hsa-miR-125b, hsa-miR-27b, hsa-miR-93, hsa-miR-20a) and inhibitor (hsa-miR-1224-3p, hsa-miR-1260) approach for select miRNAs revealed the direct influence of the altered metastamiRs in the regulation of identified protein targets. Clinical outcome association analysis with the validated metastamiRs’ targets corresponded strongly with poor overall and relapse-free survival. Conclusions For the first time, these results identified a comprehensive list of neuroblastoma metastamiRs, related their deregulation to altered expression of protein targets, and established their association with poor clinical outcomes. The identified set of distinctive neuroblastoma metastamiRs could serve as potential candidates for diagnostic markers for the switch from favorable to high-risk metastatic disease. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1642-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Faizan H Khan
- Department of Radiation Oncology, University of Oklahoma Health Sciences Center, 940, Stanton L. Young Boulevard, BMSB 737, Oklahoma City, OK, 73104, USA.
| | - Vijayabaskar Pandian
- Department of Radiation Oncology, University of Oklahoma Health Sciences Center, 940, Stanton L. Young Boulevard, BMSB 737, Oklahoma City, OK, 73104, USA.
| | - Satishkumar Ramraj
- Department of Radiation Oncology, University of Oklahoma Health Sciences Center, 940, Stanton L. Young Boulevard, BMSB 737, Oklahoma City, OK, 73104, USA.
| | - Sheeja Aravindan
- Stephenson Cancer Center, 975 NE 10th Street, BRC 1468, Oklahoma City, OK, 73104, USA.
| | - Terence S Herman
- Department of Radiation Oncology, University of Oklahoma Health Sciences Center, 940, Stanton L. Young Boulevard, BMSB 737, Oklahoma City, OK, 73104, USA. .,Stephenson Cancer Center, 975 NE 10th Street, BRC 1468, Oklahoma City, OK, 73104, USA.
| | - Natarajan Aravindan
- Department of Radiation Oncology, University of Oklahoma Health Sciences Center, 940, Stanton L. Young Boulevard, BMSB 737, Oklahoma City, OK, 73104, USA.
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