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MicroRNA-34a inhibits epithelial-mesenchymal transition of lens epithelial cells by targeting Notch1. Exp Eye Res 2019; 185:107684. [PMID: 31158382 DOI: 10.1016/j.exer.2019.05.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 04/16/2019] [Accepted: 05/28/2019] [Indexed: 01/08/2023]
Abstract
Posterior capsule opacification (PCO) is a common long-term complication of modern cataract surgery. The epithelial-mesenchymal transition (EMT) of lens epithelial cells (LECs) is a crucial process in the development of PCO. The purpose of this study is to investigate the role of microRNA-34a (miR-34a) in the regulation of EMT and its target gene. Human LECs were treated with TGFβ2 to induce EMT as a model for PCO. The mRNA levels of miR-34a and EMT markers were examined by real-time quantitative polymerase chain reaction (qPCR). The expression level of miR-34a was downregulated, whereas that of Notch1 was upregulated in TGFβ2-induced EMT of LECs. Overexpression of miR-34a by transfection with miR-34a inhibited EMT of LECs and reduced the expression of Notch1; while, inhibition of miR-34a upregulated the expression of both Notch1 and its ligand Jagged1 in LECs. Luciferase reporter assays revealed that Notch1 gene was direct target of miR-34a. Moreover, DAPT, a specific inhibitor of Notch signaling pathway, reversed LEC-EMT. In addition, the expression level of miR-34a was downregulated, whereas that of Notch1 was upregulated in capsular opacification from cataract samples. MiR-34a can negatively regulate EMT of LECs by targeting Notch1. Therefore, miR-34a/Notch1 could serve as a potential therapeutic approach for the treatment of PCO.
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Baulida J, Díaz VM, Herreros AGD. Snail1: A Transcriptional Factor Controlled at Multiple Levels. J Clin Med 2019; 8:jcm8060757. [PMID: 31141910 PMCID: PMC6616578 DOI: 10.3390/jcm8060757] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 12/27/2022] Open
Abstract
Snail1 transcriptional factor plays a key role in the control of epithelial to mesenchymal transition and fibroblast activation. As a consequence, Snail1 expression and function is regulated at multiple levels from gene transcription to protein modifications, affecting its interaction with specific cofactors. In this review, we describe the different elements that control Snail1 expression and its activity both as transcriptional repressor or activator.
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Affiliation(s)
- Josep Baulida
- Programa de Recerca en Càncer, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Unidad Asociada al CSIC, 08003 Barcelona, Spain.
| | - Víctor M Díaz
- Programa de Recerca en Càncer, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Unidad Asociada al CSIC, 08003 Barcelona, Spain.
- Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, 08003 Barcelona, Spain.
| | - Antonio García de Herreros
- Programa de Recerca en Càncer, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Unidad Asociada al CSIC, 08003 Barcelona, Spain.
- Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, 08003 Barcelona, Spain.
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Wang R, Lin J, Bagchi RA. Novel molecular therapeutic targets in cardiac fibrosis: a brief overview 1. Can J Physiol Pharmacol 2018; 97:246-256. [PMID: 30388374 DOI: 10.1139/cjpp-2018-0430] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cardiac fibrosis, characterized by excessive accumulation of extracellular matrix, abolishes cardiac contractility, impairs cardiac function, and ultimately leads to heart failure. In recent years, significant evidence has emerged that supports the highly dynamic and responsive nature of the cardiac extracellular matrix. Although our knowledge of cardiac fibrosis has advanced tremendously over the past decade, there is still a lack of specific therapies owing to an incomplete understanding of the disease etiology and process. In this review, we attempt to highlight some of the recently investigated molecular determinants of ischemic and non-ischemic fibrotic remodeling of the myocardium that present as promising avenues for development of anti-fibrotic therapies.
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Affiliation(s)
- Ryan Wang
- a Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Justin Lin
- b Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Rushita A Bagchi
- c Department of Medicine, Division of Cardiology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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Yang G, Fu Y, Lu X, Wang M, Dong H, Li Q. miR‑34a regulates the chemosensitivity of retinoblastoma cells via modulation of MAGE‑A/p53 signaling. Int J Oncol 2018; 54:177-187. [PMID: 30387834 DOI: 10.3892/ijo.2018.4613] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/22/2018] [Indexed: 01/01/2023] Open
Abstract
The present study aimed to explore the combined role of microRNA (miR)-34a, melanoma antigen-A (MAGE‑A) and p53 in altering the chemosensitivity of retinoblastoma (RB) cells. Human RB and adjacent tumor tissues, as well as human RB cell lines (HXO‑Rb44, SO‑Rb50, Y79 and WERI‑Rb-1) were used. In addition, four chemotherapeutic drugs, including carboplatin, etoposide, Adriamycin and vincristine, were used to treat the cell lines, in order to evaluate the sensitivity of RB cells. Furthermore, miR‑34a expression was detected by reverse transcription-quantitative polymerase chain reaction, and western blotting was implemented to quantify expression levels of MAGE‑A and p53. A luciferase reporter gene assay was used to validate the targeted association between miR‑34a and MAGE‑A. The results indicated that SO‑Rb50 cells exhibited the highest resistance to carboplatin, Adriamycin and vincristine (P<0.05), whereas HXO‑Rb44 cells revealed the highest inhibition rate in response to etoposide (P<0.05) out of the four cell lines. Furthermore, reduced miR‑34a expression and increased MAGE‑A expression significantly elevated the survival rate and viability of SO‑Rb50 cells following drug treatment (all P<0.05). miR‑34a was also demonstrated to directly target MAGE‑A, thereby significantly promoting the viability of RB cells and depressing apoptosis (P<0.05). p53, which was subjected to modulation by miR‑34a and MAGE‑A, also significantly reduced the proliferation rate of RB cells (P<0.05). In conclusion, the miR‑34a/MAGE‑A/p53 axis may be conducive to enhancing the efficacies of chemotherapeutic treatments for RB.
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Affiliation(s)
- Ge Yang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Yang Fu
- Department of General Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Xiaoyan Lu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Menghua Wang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Hongtao Dong
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Qiuming Li
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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Clinical Impact of Epithelial-to-Mesenchymal Transition Regulating MicroRNAs in Pancreatic Ductal Adenocarcinoma. Cancers (Basel) 2018; 10:cancers10090328. [PMID: 30217058 PMCID: PMC6162771 DOI: 10.3390/cancers10090328] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 08/30/2018] [Accepted: 09/11/2018] [Indexed: 12/20/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most aggressive carcinoma entities worldwide with early and rapid dissemination. Recently, we discussed the role of microRNAs as epigenetic regulators of Epithelial-to-Mesenchymal Transition (EMT) in PDAC. In this study, we investigated their value as diagnostic and prognostic markers in tissue and blood samples of 185 patients including PDAC, non-malignant pancreatic disorders, and age-matched healthy controls. Expression of the microRNA-200-family (microRNAs -141, -200a, -200b, -200c, -429) and microRNA-148a was significantly downregulated in tissue of PDAC Union internationale contre le cancer (UICC) Stage II. Correspondingly, stromal PDAC tissue showed strong expression of Fibronectin, Vimentin, and ZEB-1 (Zinc finger E-box-binding homeobox) versus low expression of E-cadherin. Transient transfection of microRNA-200b and microRNA-200c mimics resulted in the downregulation of their key target ZEB-1. Inversely, blood serum analyses of patients with PDAC UICC Stages II, III, and IV showed a significant over-expression of microRNA-200-family members, microRNA-148a, microRNA-10b, and microRNA-34a. Correspondingly, Enzyme-linked Immunosorbent Assay (ELISA) analyses revealed a significant over-expression of soluble E-cadherin in serum samples of PDAC patients versus healthy controls. The best diagnostic accuracy to distinguish between PDAC and non-PDAC in this patient collective could be achieved in tissue by microRNA-148a with an area under the receiver-operating-characteristic (ROC) curve (AUC) of 0.885 and in blood serum by a panel of microRNA-141, -200b, -200c, and CA.19-9 with an AUC of 0.890. Both diagnostic tools outreach the diagnostic performance of the currently most common diagnostic biomarker CA.19-9 (AUC of 0.834). Kaplan Meier survival analysis of this patient collective revealed an improved overall survival in PDAC patients with high expression of tissue-related microRNA-34a, -141, -200b, -200c, and -429. In conclusion, EMT-regulating microRNAs have great potential as liquid and solid biopsy markers in PDAC patients. Their prognostic and therapeutic benefits remain important tasks for future studies.
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Huang Y, Zou Y, Lin L, Ma X, Chen H. Identification of serum miR-34a as a potential biomarker in acute myeloid leukemia. Cancer Biomark 2018; 22:799-805. [DOI: 10.3233/cbm-181381] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Lu Q, Lu M, Li D, Zhang S. MicroRNA‑34b promotes proliferation, migration and invasion of Ewing's sarcoma cells by downregulating Notch1. Mol Med Rep 2018; 18:3577-3588. [PMID: 30106161 PMCID: PMC6131584 DOI: 10.3892/mmr.2018.9365] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 04/23/2018] [Indexed: 01/15/2023] Open
Abstract
Ewing's sarcoma is the second most frequent bone and soft tissue sarcoma, which is commonly driven by the Ewing's sarcoma breakpoint region 1-friend leukemia integration 1 transcription factor (EWS-FLI1) fusion gene. Since microRNAs (miRs) can act as either oncogenes or tumor suppressor genes in human cancer, and miR-34b has been reported to act as a tumor suppressor, the role of miR-34b in Ewing's sarcoma was investigated in the present study. The results demonstrated that miR-34b expression levels were higher in tumor samples compared within normal tissue samples. Notably, miR-34b expression levels were significantly higher in EWS-FLI1-positive samples compared within EWS-FLI1-negative samples. The effects of miR-34b expression on cell proliferation, migration and invasion were also examined. miR-34b expression was inhibited using small interfering (si)RNA targeting the fusion gene. Transfection of a miR-34b precursor sequence into siRNA-treated tumor cells resulted in a significant increase in cell growth, migration and invasion compared within the control group. In addition, the adhesive ability was increased in the Ewing's sarcoma cell line RD-ES, but not A673, following miR-34b upregulation. Conversely, downregulation of miR-34b expression led to a significant decrease in cell growth, migration and invasion. Notch has previously been reported to serve either oncogenic or tumor suppressive roles in human cancer. The results indicated that Notch1 and its target genes, Hes family BHLH transcription factor 1 and Hes-related family BHLH transcription factor with YRPW motif 1, were suppressed by miR-34b directly In conclusion, EWS-FLI1 may modulate miR-34b expression directly or indirectly, and miR-34b potentially has an oncogenic role in Ewing's sarcoma by downregulating Notch1.
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Affiliation(s)
- Qunshan Lu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Mei Lu
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Dong Li
- Department of Orthopedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250012, P.R. China
| | - Shuai Zhang
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
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Liu W, Zhang J, Gan X, Shen F, Yang X, Du N, Xia D, Liu L, Qiao L, Pan J, Sun Y, Xi X. LGR5 promotes epithelial ovarian cancer proliferation, metastasis, and epithelial-mesenchymal transition through the Notch1 signaling pathway. Cancer Med 2018; 7:3132-3142. [PMID: 29777575 PMCID: PMC6051213 DOI: 10.1002/cam4.1485] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 02/24/2018] [Accepted: 03/16/2018] [Indexed: 12/15/2022] Open
Abstract
Leucine-rich repeat-containing G protein-coupled receptor 5 (LGR5) plays a vital role in the development of malignant tumors; however, its biological role and underlying mechanism in epithelial ovarian cancer (EOC) remain unclear. In this study, we aimed to investigate the biological function and clinical significance of LGR5 in human EOC. We evaluated LGR5 expression in EOC cell lines and tissues from ovarian cancer patients by qPCR, Western blotting, and immunohistochemical analysis. Cell proliferation, colony formation, transwell invasion assay, and scratch-wound assays were conducted to evaluate the expansion and invasion abilities of EOC cells. Tumor xenograft experiments were performed in female BALB/c athymic nude mice to test cell proliferation in vivo. Western blot analysis was performed to confirm the expression of epithelial-to-mesenchymal transition (EMT) signature proteins and their association with Notch1 signaling. The results demonstrated that LGR5 was overexpressed in EOC tissues and cell lines. Aberrant expression of LGR5 was significantly associated with patient age (P = 0.006), tumor histologic type (P < 0.001), and distant metastasis (P = 0.025). Consistent with these findings, suppression of LGR5 expression led to decreased proliferation and metastasis of EOC cell lines. Furthermore, LGR5 could induce EMT and regulate the Notch1 signaling pathway. Taken together,LGR5 may have an important role in the promotion of tumorigenesis and metastasis of EOC and is a potential therapeutic target for EOC management.
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Affiliation(s)
- Wenxue Liu
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Jing Zhang
- Department of Obstetrics and Gynecology, The International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Xupei Gan
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Fangqian Shen
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Xiaoming Yang
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Na Du
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Dandan Xia
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Lei Liu
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Lianqiao Qiao
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Jufang Pan
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Yunyan Sun
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Xiaowei Xi
- Department of Obstetrics and Gynecology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
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Sharma S, Mazumdar S, Italiya KS, Date T, Mahato RI, Mittal A, Chitkara D. Cholesterol and Morpholine Grafted Cationic Amphiphilic Copolymers for miRNA-34a Delivery. Mol Pharm 2018; 15:2391-2402. [PMID: 29747513 DOI: 10.1021/acs.molpharmaceut.8b00228] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
miR-34a is a master tumor suppressor playing a key role in the several signaling mechanisms involved in cancer. However, its delivery to the cancer cells is the bottleneck in its clinical translation. Herein we report cationic amphiphilic copolymers grafted with cholesterol (chol), N, N-dimethyldipropylenetriamine (cation chain) and 4-(2-aminoethyl)morpholine (morph) for miR-34a delivery. The copolymer interacts with miR-34a at low N/P ratios (∼2/1) to form nanoplexes of size ∼108 nm and a zeta potential ∼ +39 mV. In vitro studies in 4T1 and MCF-7 cells indicated efficient transfection efficiency. The intracellular colocalization suggested that the copolymer effectively transported the FAM labeled siRNA into the cytoplasm within 2 h and escaped from the endo-/lysosomal environment. The developed miR-34a nanoplexes inhibited the breast cancer cell growth as confirmed by MTT assay wherein 28% and 34% cancer cell viability was observed in 4T1 and MCF-7 cells, respectively. Further, miR-34a nanoplexes possess immense potential to induce apoptosis in both cell lines.
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Affiliation(s)
- Saurabh Sharma
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Samrat Mazumdar
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Kishan S Italiya
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Tushar Date
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Ram I Mahato
- Department of Pharmaceutical Sciences , College of Pharmacy, University of Nebraska Medical Center , 986125 Nebraska Medical Center , Omaha , Nebraska 68198-6125 , United States
| | - Anupama Mittal
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Deepak Chitkara
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
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60
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Labatut AE, Mattheolabakis G. Non-viral based miR delivery and recent developments. Eur J Pharm Biopharm 2018; 128:82-90. [PMID: 29679644 DOI: 10.1016/j.ejpb.2018.04.018] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 02/28/2018] [Accepted: 04/18/2018] [Indexed: 12/18/2022]
Abstract
miRNAs are promising therapeutic targets or tools for the treatment of numerous diseases, with most prominently, cancer. The inherent capacity of these short nucleic acids to regulate multiple cancer-related pathways simultaneously has prompted strong research on understanding miR functions and their potential use for therapeutic purposes. A key determinant of miR therapeutics' potential for treatment is their delivery. Viral and non-viral vectors attempt to address the major limitations associated with miR delivery, but several hurdles have been identified. Here, we present an overview on the general limitations of miR delivery, and the delivery strategies exploited to overcome them. We provide an introduction on the advantages and disadvantages of viral and non-viral vectors, and we go into detail to analyze the most prominently used non-viral systems. We provide with an update on the most recent research on this topic and we describe the mechanism and limitations of the lipid-, polymer- and inorganic material- based miR delivery systems.
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Affiliation(s)
- Annalise Elizabeth Labatut
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, United States
| | - George Mattheolabakis
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, United States.
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Cai H, Yao J, An Y, Chen X, Chen W, Wu D, Luo B, Yang Y, Jiang Y, Sun D, He X. LncRNA HOTAIR acts a competing endogenous RNA to control the expression of notch3 via sponging miR-613 in pancreatic cancer. Oncotarget 2018; 8:32905-32917. [PMID: 28415631 PMCID: PMC5464837 DOI: 10.18632/oncotarget.16462] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 03/11/2017] [Indexed: 12/12/2022] Open
Abstract
Pancreatic cancer is one of the most deadly cancers with a poor prognosis. Though studies have implicated the roles of microRNAs in pancreatic cancer progression, little is known about the role of miR-613 in pancreatic cancer. In the present study, the expression of miR-613 was down-regulated in pancreatic cancer tissues and cancer cell lines. Down-regulation of miR-613 was positively correlated with tumor differentiation, advanced TNM stage, nodal metastasis and shorter overall survival in patients with pancreatic cancer. Overexpression of miR-613 suppressed cell proliferation, invasion and migration, and induced cell apoptosis and cell cycle arrest at G0/G1 phase in pancreatic cancer cells. Bioinformatics analysis, luciferase reporter assay and rescue experiments showed that notch3 was a direct target of miR-613. MiR-613 was inversely correlated with notch3 expression in pancreatic cancer tissues. The long non-coding RNA, HOX transcript antisense RNA (HOTAIR) was up-regulated in both pancreatic cancer tissues and cancer cell lines, and HOTAIR suppressed the expression of miR-613 via functioning as a competing endogenous RNA. In vivo studies showed that stable overexpression of miR-613 or knock-down of HOTAIR suppressed tumor growth and also reduced the expression of notch3. In conclusion, these results suggest that HOTAIR functions as a competing endogenous RNA to regulate notch3 expression via sponging miR-613 in pancreatic cancer.
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Affiliation(s)
- Huihua Cai
- Department of Hepatobiliary Surgery, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
| | - Jie Yao
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People's Hospital, The Clinic Medical College of Yangzhou University, Yangzhou, Jiangsu, China
| | - Yong An
- Department of Hepatobiliary Surgery, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
| | - Xuemin Chen
- Department of Hepatobiliary Surgery, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
| | - Weibo Chen
- Department of Hepatobiliary Surgery, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
| | - Di Wu
- Department of Hepatobiliary Surgery, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
| | - Boyang Luo
- Department of Hepatobiliary Surgery, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
| | - Yong Yang
- Department of Hepatobiliary Surgery, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
| | - Yong Jiang
- Department of Hepatobiliary Surgery, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
| | - Donglin Sun
- Department of Hepatobiliary Surgery, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
| | - Xiaozhou He
- Department of Urology, The First People's Hospital of Changzhou, The Third Hospital Affiliated to Soochow University, Changzhou, Jiangsu, China
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Dreyer FS, Cantone M, Eberhardt M, Jaitly T, Walter L, Wittmann J, Gupta SK, Khan FM, Wolkenhauer O, Pützer BM, Jäck HM, Heinzerling L, Vera J. A web platform for the network analysis of high-throughput data in melanoma and its use to investigate mechanisms of resistance to anti-PD1 immunotherapy. Biochim Biophys Acta Mol Basis Dis 2018; 1864:2315-2328. [PMID: 29410200 DOI: 10.1016/j.bbadis.2018.01.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/12/2018] [Accepted: 01/16/2018] [Indexed: 01/11/2023]
Abstract
Cellular phenotypes are established and controlled by complex and precisely orchestrated molecular networks. In cancer, mutations and dysregulations of multiple molecular factors perturb the regulation of these networks and lead to malignant transformation. High-throughput technologies are a valuable source of information to establish the complex molecular relationships behind the emergence of malignancy, but full exploitation of this massive amount of data requires bioinformatics tools that rely on network-based analyses. In this report we present the Virtual Melanoma Cell, an online tool developed to facilitate the mining and interpretation of high-throughput data on melanoma by biomedical researches. The platform is based on a comprehensive, manually generated and expert-validated regulatory map composed of signaling pathways important in malignant melanoma. The Virtual Melanoma Cell is a tool designed to accept, visualize and analyze user-generated datasets. It is available at: https://www.vcells.net/melanoma. To illustrate the utilization of the web platform and the regulatory map, we have analyzed a large publicly available dataset accounting for anti-PD1 immunotherapy treatment of malignant melanoma patients.
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63
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Taming the Notch Transcriptional Regulator for Cancer Therapy. Molecules 2018; 23:molecules23020431. [PMID: 29462871 PMCID: PMC6017063 DOI: 10.3390/molecules23020431] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/12/2018] [Accepted: 02/13/2018] [Indexed: 12/15/2022] Open
Abstract
Abstract Notch signaling is a highly conserved pathway in all metazoans, which is deeply involved in the regulation of cell fate and differentiation, proliferation and migration during development. Research in the last decades has shown that the various components of the Notch signaling cascade are either upregulated or activated in human cancers. Therefore, its downregulation stands as a promising and powerful strategy for cancer therapy. Here, we discuss the recent advances in the development of small molecule inhibitors, blocking antibodies and oligonucleotides that hinder Notch activity, and their outcome in clinical trials. Although Notch was initially identified as an oncogene, later studies showed that it can also act as a tumor suppressor in certain contexts. Further complexity is added by the existence of numerous Notch family members, which exert different activities and can be differentially targeted by inhibitors, potentially accounting for contradictory data on their therapeutic efficacy. Notably, recent evidence supports the rationale for combinatorial treatments including Notch inhibitors, which appear to be more effective than single agents in fighting cancer.
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Feng SD, Mao Z, Liu C, Nie YS, Sun B, Guo M, Su C. Simultaneous overexpression of miR-126 and miR-34a induces a superior antitumor efficacy in pancreatic adenocarcinoma. Onco Targets Ther 2017; 10:5591-5604. [PMID: 29200874 PMCID: PMC5703150 DOI: 10.2147/ott.s149632] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background Pancreatic adenocarcinoma (PAC) is one of the most fatal cancers due to its high degree of malignancy, increasing incidence, high mortality, and unsatisfactory treatment efficacy. Evidence has suggested that numerous microRNAs (miRNAs), including miR-126 and miR-34a, have potent tumor-suppressing effects on PAC, implicating a possible application of miRNA in tumor therapy. However, the therapeutic effect of a single miRNA on pancreatic cancer is limited. Methods We simultaneously delivered miR-126 and miR-34a into PAC cells by a carcinoembryonic antigen promoter-driven oncolytic adenovirus (AdCEAp-miR126/34a), and examined the antitumor efficacy of the therapeutic system in in vitro and in vivo experiments. Results In vitro cytological experiments found that the expression levels of miR-126 and miR-34a were specifically increased in the AdCEAp-miR126/34a-infected PAC cells, and the antitumor efficacy was enhanced in aspects of cancer cell viability, migration, invasion, and apoptosis, by synergistically combining the antitumor effects of overexpressed miR-126 and miR-34a and the oncolytic effect of viral replication specifically in PAC cells. The expression levels of miR-126 target genes (vascular endothelial growth factor-A and SOX2) and miR-34a target genes (cyclin D1, E2F1, and Bcl-2) were markedly decreased in the PAC cells after being infected with AdCEAp-miR126/34a. Notable suppression of the therapeutic system on tumor growth was also proven in established PAC xenograft tumor models in nude mice, which demonstrated that the combination of miR-126 and miR-34a exerts more effective antitumor outcomes than a single miRNA. Conclusion The therapeutic system co-expressing miR-126 and miR-34a mediated by oncolytic adenovirus is a promising system for PAC target therapy.
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Affiliation(s)
- Shu-De Feng
- Department of General Surgery, Jiangsu Armed Police General Hospital, Yangzhou, Jiangsu, China
| | - Ziming Mao
- Department of Molecular Oncology, Eastern Hepatobiliary Surgical Hospital, National Center of Liver Cancer, Second Military Medical University, Shanghai, China
| | - Chunying Liu
- Department of Molecular Oncology, Eastern Hepatobiliary Surgical Hospital, National Center of Liver Cancer, Second Military Medical University, Shanghai, China
| | - Yu-Song Nie
- Department of General Surgery, Jiangsu Armed Police General Hospital, Yangzhou, Jiangsu, China
| | - Bin Sun
- Department of Molecular Oncology, Eastern Hepatobiliary Surgical Hospital, National Center of Liver Cancer, Second Military Medical University, Shanghai, China
| | - Minggao Guo
- Department of General Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Changqing Su
- Department of Molecular Oncology, Eastern Hepatobiliary Surgical Hospital, National Center of Liver Cancer, Second Military Medical University, Shanghai, China
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Maldonado LY, Arsene D, Mato JM, Lu SC. Methionine adenosyltransferases in cancers: Mechanisms of dysregulation and implications for therapy. Exp Biol Med (Maywood) 2017; 243:107-117. [PMID: 29141455 DOI: 10.1177/1535370217740860] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Methionine adenosyltransferase genes encode enzymes responsible for the biosynthesis of S-adenosylmethionine, the principal biological methyl donor and precursor of polyamines and glutathione. Mammalian cells express three genes - MAT1A, MAT2A, and MAT2B - with distinct expression and functions. MAT1A is mainly expressed in the liver and maintains the differentiated states of both hepatocytes and bile duct epithelial cells. Conversely, MAT2A and MAT2B are widely distributed in non-parenchymal cells of the liver and extrahepatic tissues. Increasing evidence suggests that methionine adenosyltransferases play significant roles in the development of cancers. Liver cancers, namely hepatocellular carcinoma and cholangiocarcinoma, involve dysregulation of all three methionine adenosyltransferase genes. MAT1A reduction is associated with increased oxidative stress, progenitor cell expansion, genomic instability, and other mechanisms implicated in tumorigenesis. MAT2A/MAT2B induction confers growth and survival advantage to cancerous cells, enhancing tumor migration. Highlighted examples from colon, gastric, breast, pancreas and prostate cancer studies further underscore methionine adenosyltransferase genes' role beyond the liver in cancer development. In this subset of extra-hepatic cancers, MAT2A and MAT2B are induced via different regulatory mechanisms. Understanding the role of methionine adenosyltransferase genes in tumorigenesis helps identify attributes of these genes that may serve as valuable targets for therapy. While S-adenosylmethionine, and its metabolite, methylthioadenosine, have been largely explored as therapeutic interventions, targets aimed at regulation of MAT gene expression and methionine adenosyltransferase protein-protein interactions are now surfacing as potential effective strategies for treatment and chemoprevention of cancers. Impact statement This review examines the role of methionine adenosyltransferases (MATs) in human cancer development, with a particular focus on liver cancers in which all three MAT genes are implicated in tumorigenesis. An overview of MAT genes, isoenzymes and their regulation provide context for understanding consequences of dysregulation. Highlighting examples from liver, colon, gastric, breast, pancreas and prostate cancers underscore the importance of understanding MAT's tumorigenic role in identifying future targets for cancer therapy.
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Affiliation(s)
- Lauren Y Maldonado
- 1 Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Diana Arsene
- 2 Division of Gastroenterology and Hepatology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - José M Mato
- 3 CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Technology, Derio, Bizkaia 48160, Spain
| | - Shelly C Lu
- 4 Division of Digestive and Liver Diseases, 22494 Cedars-Sinai Medical Center , Cedars-Sinai Medical Center, LA, CA 90048, USA
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Zhao K, Cheng J, Chen B, Liu Q, Xu D, Zhang Y. Circulating microRNA-34 family low expression correlates with poor prognosis in patients with non-small cell lung cancer. J Thorac Dis 2017; 9:3735-3746. [PMID: 29268381 DOI: 10.21037/jtd.2017.09.01] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Background To evaluate the association of plasma miR-34a/b/c expressions with the clinicopathological properties and the prognosis in non-small cell lung cancer (NSCLC) patients. Methods A total of 196 NSCLC patients were recruited in the study. Plasma sample and tumor tissue sample were collected. Total RNA was extracted from plasma and tissue samples, and microR-34a/b/c expression was evaluated by real-time polymerase chain reaction (PCR). Results MiR-34a and miR-34c in plasma were positively associated with that in tumor tissue (P<0.001 and P=0.001, respectively). Plasma miR-34a expression was negatively correlated with lymph node metastasis (P=0.002), also tissue miR-34a expression was negatively associated with lymph node metastasis (P=0.018). Furthermore, plasma miR-34a high expression was correlated with prolonged disease-free survival (DFS) (P=0.011) and overall survival (OS) (P=0.011) compared to low expression, and plasma miR-34c high expression could predict longer DFS (P=0.038) than low expression, while no correlation of plasma miR-34b with DFS and OS was discovered. In terms of tissue sample, worse DFS was associated with miR-34a (P=0.002) and miR-34c (P=0.032) low expressions compared with high expressions, and miR-34a (P<0.001), as well as miR-34c (P=0.003) high expressions were associated with longer OS than low expressions. Plasma miR-34a was correlated with prolonged DFS and OS in univariate Cox model, while it could not independently predict DFS and OS of NSCLC patients in multivariate Cox model. Conclusions In conclusion, circulating miR-34a and miR-34c might be served as novel prognostic biomarkers in NSCLC patients.
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Affiliation(s)
- Ke Zhao
- Department of Thoracic Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Jing Cheng
- Department of Thoracic Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Baojun Chen
- Department of Thoracic Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Qi Liu
- Department of Thoracic Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Di Xu
- Department of Thoracic Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Yongjian Zhang
- Department of Thoracic Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
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Tomasi ML, Cossu C, Spissu Y, Floris A, Ryoo M, Iglesias-Ara A, Wang Q, Pandol SJ, Bhowmick NA, Seki E, Posadas EM, Lu SC. S-adenosylmethionine and methylthioadenosine inhibit cancer metastasis by targeting microRNA 34a/b-methionine adenosyltransferase 2A/2B axis. Oncotarget 2017; 8:78851-78869. [PMID: 29108270 PMCID: PMC5668003 DOI: 10.18632/oncotarget.20234] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 07/16/2017] [Indexed: 12/13/2022] Open
Abstract
MicroRNA-34a (miR-34a) is down-regulated in colorectal cancers (CRC) and required for interleukin-6 (IL-6)-induced CRC metastasis. Mice lacking miR-34a developed more invasive cancer in a colitis-associated cancer model. In the same model, S-adenosylmethionine (SAMe) and methylthioadenosine (MTA) inhibited IL-6/STAT3 and lowered tumor burden. SAMe and MTA reduce the expression of methionine adenosyltransferase 2A (MAT2A) and there are consensus binding sites for miR-34a/b in the MAT2A 3’UTR. Here we examined whether SAMe/MTA influence miR-34a/b expression and cancer metastasis. We found SAMe and MTA raised miR-34a/b expression in CRC cell lines, inhibited migration and invasion in vitro and liver metastasis in vivo. Like CRC, MAT2A and MAT2B expression is induced in human pancreas and prostate cancers. Treatment with SAMe, MTA, miR-34a or miR-34b inhibited MAT2A expression mainly at the protein level. MAT2B protein level also fell because MAT2A and MAT2B enhance each other’s protein stability. Overexpressing miR-34a or miR-34b inhibited while MAT2A or MAT2B enhanced CRC migration and invasion. Co-expressing either miR-34a/b had minimal to no effect on MAT2A/MAT2B’s ability to increase migration, invasion and growth. Taken together, MAT2A and MAT2B are important targets of miR-34a/b and SAMe and MTA target this axis, suppressing MAT2A/MAT2B while raising miR-34a/b expression, inhibiting cancer metastasis.
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Affiliation(s)
- Maria Lauda Tomasi
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Carla Cossu
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Department of Medicine, University of Sassari, Sassari, Italy
| | - Ylenia Spissu
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Department of Medicine, University of Sassari, Sassari, Italy
| | - Andrea Floris
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Department of Biomedical Science, University of Cagliari, Cagliari, Italy
| | - Minjung Ryoo
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Ainhoa Iglesias-Ara
- Department of Genetics, Faculty of Science and Technology, University of The Basque Country, Bilbao, Spain
| | - Qiang Wang
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Stephen J Pandol
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Translational Oncology Program, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Neil A Bhowmick
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Urologic Oncology Program, Division of Hematology & Oncology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Cancer Biology Program, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Ekihiro Seki
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Cancer Biology Program, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Edwin M Posadas
- Urologic Oncology Program, Division of Hematology & Oncology, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Translational Oncology Program, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Shelly C Lu
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Translational Oncology Program, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
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Chen W, Liu Y, Liang X, Huang Y, Li Q. Chondroitin sulfate-functionalized polyamidoamine as a tumor-targeted carrier for miR-34a delivery. Acta Biomater 2017; 57:238-250. [PMID: 28511876 DOI: 10.1016/j.actbio.2017.05.030] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 05/12/2017] [Accepted: 05/12/2017] [Indexed: 12/22/2022]
Abstract
Chondroitin sulfate (CS) was modified on a polyamidoamine dendrimer (PAMAM) through Michael addition to construct a tumor-targeted carrier CS-PAMAM for miR-34a delivery. The derivative CS-PAMAM was demonstrated to achieve an efficient cellular uptake of miR-34a in a CD44-dependent endocytosis way and further facilitate the endosomal escape of miR-34a after 4h. Through the miR-34a delivery, obvious inhibition of cell proliferation could be detected which was attributed to the enhancement of cell apoptosis and cell cycle arrest, and meanwhile the cell migration and invasion has been observed to be inhibited. Finally, the intravenous injection of CS-PAMAM/miR-34a formulation into mice bearing human lung adenocarcinoma cell A549 xenografts could efficiently inhibit the tumor growth and induce the tumor apoptosis owing to the enhanced accumulation of miR-34a in tumor tissue. Overall, CS-PAMAM is potential to be used as a tumor-targeted oligonucleotide carrier for achieving tumor gene therapy. STATEMENT OF SIGNIFICANCE The cationic dendrimer PAMAM was modified by chondroitin sulfate (CS) through Michael addition to construct a tumor-targeted carrier CS-PAMAM for miR-34a delivery. The introduction of CS could achieve an efficient cellular uptake and intracellular transfection of miR-34a in a CD44-dependent endocytosis manner. The miR-34a delivery could execute the anti-proliferation activity by simultaneously inducing cell apoptosis and cell cycle arrest, and also the anti-migration activity. The CS-PAMAM-mediated systemic delivery of miR-34a showed significant inhibition of tumor growth and induction of tumor apoptosis using a mice model of subcutaneously implanted tumors.
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Santamaria PG, Moreno‐Bueno G, Portillo F, Cano A. EMT: Present and future in clinical oncology. Mol Oncol 2017; 11:718-738. [PMID: 28590039 PMCID: PMC5496494 DOI: 10.1002/1878-0261.12091] [Citation(s) in RCA: 177] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/31/2017] [Accepted: 06/02/2017] [Indexed: 12/12/2022] Open
Abstract
Epithelial/mesenchymal transition (EMT) has emerged as a key regulator of metastasis by facilitating tumor cell invasion and dissemination to distant organs. Recent evidences support that the reverse mesenchymal/epithelial transition (MET) is required for metastatic outgrowth; moreover, the existence of hybrid epithelial/mesenchymal (E/M) phenotypes is increasingly being reported in different tumor contexts. The accumulated data strongly support that plasticity between epithelial and mesenchymal states underlies the dissemination and metastatic potential of carcinoma cells. However, the translation into the clinics of EMT and epithelial plasticity processes presents enormous challenges and still remains a controversial issue. In this review, we will evaluate current evidences for translational applicability of EMT and depict an overview of the most recent EMT in vivo models, EMT marker analyses in human samples as well as potential EMT therapeutic approaches and ongoing clinical trials. We foresee that standardized analyses of EMT markers in solid and liquid tumor biopsies in addition to innovative tools targeting the E/M states will become promising strategies for future translation to the clinical setting.
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Affiliation(s)
- Patricia G. Santamaria
- Departamento de BioquímicaInstituto de Investigaciones Biomédicas ‘Alberto Sols’ (CSIC‐UAM)Universidad Autónoma de Madrid (UAM)IdiPAZCIBERONCMadridSpain
| | - Gema Moreno‐Bueno
- Departamento de BioquímicaInstituto de Investigaciones Biomédicas ‘Alberto Sols’ (CSIC‐UAM)Universidad Autónoma de Madrid (UAM)IdiPAZCIBERONCMadridSpain
- Fundación MD Anderson InternationalMadridSpain
| | - Francisco Portillo
- Departamento de BioquímicaInstituto de Investigaciones Biomédicas ‘Alberto Sols’ (CSIC‐UAM)Universidad Autónoma de Madrid (UAM)IdiPAZCIBERONCMadridSpain
| | - Amparo Cano
- Departamento de BioquímicaInstituto de Investigaciones Biomédicas ‘Alberto Sols’ (CSIC‐UAM)Universidad Autónoma de Madrid (UAM)IdiPAZCIBERONCMadridSpain
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Morais M, Dias F, Teixeira AL, Medeiros R. MicroRNAs and altered metabolism of clear cell renal cell carcinoma: Potential role as aerobic glycolysis biomarkers. Biochim Biophys Acta Gen Subj 2017; 1861:2175-2185. [PMID: 28579513 DOI: 10.1016/j.bbagen.2017.05.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 05/09/2017] [Accepted: 05/30/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND Warburg Effect is a metabolic switch that occurs in most of cancer cells but its advantages are not fully understood. This switch is known to happen in renal cell carcinoma (RCC), which is the most common solid cancer of the adult kidney. RCC carcinogenesis is related to pVHL loss and Hypoxia Inducible Factor (HIF) activation, ultimately leading to the activation of several genes related to glycolysis. MicroRNAs (miRNAs) regulate gene expression at a post-transcriptional level and are also deregulated in several cancers, including RCC. SCOPE OF REVIEW This review focuses in the miRNAs that direct target enzymes involved in glycolysis and that are deregulated in several cancers. It also reviews the possible application of miRNAs in the improvement of clinical patients' management. MAJOR CONCLUSIONS Several miRNAs that direct target enzymes involved in glycolysis are downregulated in cancer, strongly influencing the Warburg Effect. Due to this strong influence, FDG-PET can possibly benefit from measurement of these miRNAs. Restoring their levels can also bring an improvement to the current therapies. GENERAL SIGNIFICANCE Despite being known for almost a hundred years, the Warburg Effect is not fully understood. MiRNAs are now known to be intrinsically connected with this effect and present an opportunity to understand it. They also open a new door to improve current diagnosis and prognosis tests as well as to complement current therapies. This is urgent for cancers like RCC, mostly due to the lack of an efficient screening test for early relapse detection and follow-up and the development of resistance to current therapies.
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Affiliation(s)
- Mariana Morais
- Molecular Oncology and Viral Pathology Group, IPO-Porto Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO-Porto), Porto, Portugal; ICBAS, Abel Salazar Institute for the Biomedical Sciences, University of Porto, Portugal
| | - Francisca Dias
- Molecular Oncology and Viral Pathology Group, IPO-Porto Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO-Porto), Porto, Portugal; ICBAS, Abel Salazar Institute for the Biomedical Sciences, University of Porto, Portugal; Research Department, LPCC-Portuguese League, Against Cancer (NRNorte), Porto, Portugal
| | - Ana L Teixeira
- Molecular Oncology and Viral Pathology Group, IPO-Porto Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO-Porto), Porto, Portugal; Research Department, LPCC-Portuguese League, Against Cancer (NRNorte), Porto, Portugal.
| | - Rui Medeiros
- Molecular Oncology and Viral Pathology Group, IPO-Porto Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO-Porto), Porto, Portugal; Research Department, LPCC-Portuguese League, Against Cancer (NRNorte), Porto, Portugal; CEBIMED, Faculty of Health Sciences, Fernando Pessoa University, Porto, Portugal; FMUP, Faculty of Medicine, University of Porto, Portugal.
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Lu R, Zhou Z, Yu W, Xia Y, Zhi X. CPEB4 promotes cell migration and invasion via upregulating Vimentin expression in breast cancer. Biochem Biophys Res Commun 2017; 489:135-141. [PMID: 28536077 DOI: 10.1016/j.bbrc.2017.05.112] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 05/19/2017] [Indexed: 02/07/2023]
Abstract
Cytoplasmic polyadenylation element binding protein 4 (CPEB4) is a member of CPEB family which is overexpressed in variety of cancers. However, the biological role and regulatory mechanism of CPEB4 in cancers remain unknown. Here, we first investigate the role of CPEB4 in breast cancer progression and metastasis. The expression of CPEB4 is elevated in breast cancer tissues compared with adjacent normal tissues. Furthermore, high expression levels of CPEB4 is associated with tumor metastasis in breast cancer patients. Ectopic expression of CPEB4 dramatically promotes EMT, migration and invasion of breast cancer cells, while silencing CPEB4 expression significantly reduces these events. Mechanically, overexpression of CPEB4 upregulates Vimentin expression and silencing Vimentin expression blocks CPEB4-induced migration and invasion of breast cancer cells. These results implicate the potential role of CPEB4 and Vimentin in breast cancer metastasis, which is further confirmed by the finding that there is a physical interaction between the two proteins. Altogether, our results provide a novel insight into CPEB4 in regulating breast cancer progression and metastasis.
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Affiliation(s)
- Ran Lu
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wen Hua Xi Road, Jinan, Shandong 250012, PR China; Department of Vascular Surgery, The First Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Bengbu, Anhui, 233004, PR China
| | - Zhiqiang Zhou
- Department of Pathology, School of Basic Medical Sciences of Shandong University, Wen Hua Xi Road 44, Jinan, 250012, PR China
| | - Wenfei Yu
- Department of Anatomy, School of Basic Medical Sciences of Shandong University, 44 Wen Hua Xi Road, Jinan, Shandong 250012, PR China
| | - Yifu Xia
- Department of Anatomy, School of Basic Medical Sciences of Shandong University, 44 Wen Hua Xi Road, Jinan, Shandong 250012, PR China
| | - Xuting Zhi
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wen Hua Xi Road, Jinan, Shandong 250012, PR China.
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