151
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Plönes T, Elze M, Kayser G, Pfeifer D, Burger M, Zissel G. mRNA and miRNA analyses in cytologically positive endobronchial ultrasound-guided transbronchial needle aspiration: Implications for molecular staging in lung cancer patients. Cancer Cytopathol 2014; 122:292-8. [DOI: 10.1002/cncy.21398] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 11/24/2013] [Accepted: 12/20/2013] [Indexed: 12/21/2022]
Affiliation(s)
- Till Plönes
- Department of Thoracic Surgery; Lung Clinic Merheim; University Medical Center Witten/Herdecke; Köln Germany
| | - Mirjam Elze
- Department of Thoracic Surgery; Center for Surgery; Medical Center-University of Freiburg; Freiburg Germany
| | - Gian Kayser
- Center for Pathology; Medical Center-University of Freiburg; Freiburg Germany
| | - Dietmar Pfeifer
- Department of Medicine I; Center for Medicine, Medical Center-University of Freiburg; Freiburg Germany
| | - Meike Burger
- Department of Medicine I; Center for Medicine, Medical Center-University of Freiburg; Freiburg Germany
| | - Gernot Zissel
- Department of Pneumology; Center for Medicine, Medical Center-University of Freiburg; Freiburg Germany
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152
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Stenvold H, Donnem T, Andersen S, Al-Saad S, Valkov A, Pedersen MI, Busund LT, Bremnes RM. High tumor cell expression of microRNA-21 in node positive non-small cell lung cancer predicts a favorable clinical outcome. BMC Clin Pathol 2014; 14:9. [PMID: 24524655 PMCID: PMC3931486 DOI: 10.1186/1472-6890-14-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 01/27/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND MicroRNA (miR)-21 has been revealed as an oncogene in cancer development, and is one of the miRNAs closely connected to angiogenesis. We aimed to explore the impact of miR-21 expression in both tumor and stromal compartments of non-small cell lung cancer (NSCLC), and correlations between miR-21 and angiogenic protein markers. METHODS From 335 unselected stage I to IIIA NSCLC carcinomas, duplicate tumor and tumor-associated stromal cores were collected in tissue microarrays (TMAs). In situ hybridization (ISH) was used to detect the expression of miR-21 separately in tumor cells and stromal cells of the tumor, and immunohistochemistry (IHC) was used to detect the expression of the protein markers protein kinase B (Akt), phosphatidylinositol-3-kinase (PI3K), hypoxia induced factor 1 (HIF1α) and vascular endothelial growth factor-A (VEGF-A). RESULTS In univariate analyses, high tumor cell expression of miR-21 in patients with lymph node metastasis was a positive prognostic factor (P = 0.024). High stromal miR-21 expression had a negative prognostic impact (P = 0.022). In the multivariate analysis, low tumor mir-21 expression in node positive patients was an independent adverse prognostic factor (HR 2.03, CI 95% 1.09-3.78, P = 0.027). CONCLUSIONS In patients with lymph node metastasis, miR-21 expression in tumor cells is an independent positive prognostic factor. High stromal miR-21 expression is a negative prognostic factor.
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Affiliation(s)
- Helge Stenvold
- Institute of Clinical Medicine, University of Tromso, Tromso, Norway.
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153
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Jiang C, Hu X, Alattar M, Zhao H. miRNA expression profiles associated with diagnosis and prognosis in lung cancer. Expert Rev Anticancer Ther 2014; 14:453-61. [PMID: 24506710 DOI: 10.1586/14737140.2013.870037] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
miRNAs, which are small single-stranded RNA molecules composed of 18-23 nts, act as oncogenes or tumor suppressor genes playing important roles in the processes of tumor formation, infiltration and metastasis. Lung cancer currently has the highest morbidity and mortality among all malignant tumors; yet, lack of early specific diagnostic markers and effective treatments hinders its proper management. In lung cancer, about 40-45 abnormal expression patterns of miRNAs have been discovered and are involved in lung cancer development. miRNAs have functions together with oncogenes and tumor suppressor genes of lung cancer. miRNAs-based tests can be used for early clinical diagnosis and prediction of clinical outcomes of lung cancer. Studying the role of miRNAs in lung cancer development and its relationship with diagnostic and prognostic parameters might help to improve the sensitivity of diagnosis and the efficacy of lung cancer treatment.
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Affiliation(s)
- Chunyang Jiang
- Department of Thoracic Surgery, Tianjin Union Medicine Centre, 190 Jieyuan Road, Hongqiao District, Tianjin 300121, Tianjin, People's Republic of China
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154
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MiR-15a-16 represses Cripto and inhibits NSCLC cell progression. Mol Cell Biochem 2014; 391:11-9. [PMID: 24500260 DOI: 10.1007/s11010-014-1981-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 01/21/2014] [Indexed: 01/07/2023]
Abstract
MicroRNAs (miRNAs) are small noncoding RNAs that have important roles in cancer. The altered expressions of miRNAs and their target genes are frequently detected in various tumors. In this study, downregulation of miR-15a-16 in nonsmall cell lung cancer (NSCLC) was found to be inversely correlated with Cripto. Results from the Luciferase reporter assay and Western blot analysis also confirmed that Cripto is a direct target of miR-15a-16. In addition, transfection of miR-15a-16 expression plasmid inhibited the invasion ability and promoted the apoptosis of NCI-H23 and NCI-H358 cells. Moreover, miR-15a-16 overexpression suppressed tumor growth in vivo. These findings clearly suggest that the downregulation of miR-15a-16 with Cripto amplification may be involved in the development of NSCLC.
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155
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Krstic J, Santibanez JF. Transforming growth factor-beta and matrix metalloproteinases: functional interactions in tumor stroma-infiltrating myeloid cells. ScientificWorldJournal 2014; 2014:521754. [PMID: 24578639 PMCID: PMC3918721 DOI: 10.1155/2014/521754] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 10/28/2013] [Indexed: 01/05/2023] Open
Abstract
Transforming growth factor-beta (TGF-β) is a pleiotropic factor with several different roles in health and disease. In tumorigenesis, it may act as a protumorigenic factor and have a profound impact on the regulation of the immune system response. Matrix metalloproteinases (MMPs) are a family that comprises more than 25 members, which have recently been proposed as important regulators acting in tumor stroma by regulating the response of noncellular and cellular microenvironment. Tumor stroma consists of several types of resident cells and infiltrating cells derived from bone marrow, which together play crucial roles in the promotion of tumor growth and metastasis. In cancer cells, TGF-β regulates MMPs expression, while MMPs, produced by either cancer cells or residents' stroma cells, activate latent TGF-β in the extracellular matrix, together facilitating the enhancement of tumor progression. In this review we will focus on the compartment of myeloid stroma cells, such as tumor-associated macrophages, neutrophils, and dendritic and mast cells, which are potently regulated by TGF-β and produce large amounts of MMPs. Their interplay and mutual implications in the generation of pro-tumorigenic cancer microenvironment will be analyzed.
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Affiliation(s)
- Jelena Krstic
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Dr Subotića 4, 11129 Belgrade, Serbia
| | - Juan F. Santibanez
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Dr Subotića 4, 11129 Belgrade, Serbia
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156
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Li L, Zhang J, Diao W, Wang D, Wei Y, Zhang CY, Zen K. MicroRNA-155 and MicroRNA-21 promote the expansion of functional myeloid-derived suppressor cells. THE JOURNAL OF IMMUNOLOGY 2014; 192:1034-43. [PMID: 24391219 DOI: 10.4049/jimmunol.1301309] [Citation(s) in RCA: 147] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Myeloid-derived suppressor cells (MDSC) are one of the main cell populations that negatively regulate immune responses. However, the mechanism underlying the expansion of MDSC remains unclear. Using miRNA microarray and TaqMan probe-based quantitative RT-PCR assay, we identified microRNA (miR)-155 and miR-21 as the two most upregulated miRNAs during the induction of MDSC from the bone marrow cells by GM-CSF and IL-6. High levels of miR-155 and miR-21 also were detected in bone marrow and spleen MDSC isolated from tumor-bearing mice. Our results also showed that TGF-β promoted the induction of MDSC through upregulating miR-155 and miR-21 expression. Overexpression of miR-155 and miR-21 enhanced whereas depletion of miR-155 and miR-21 reduced the frequencies of cytokine-induced MDSC. Subpopulation analysis indicated that miR-21 and miR-155 induced the expansion of both monocytic and granulocytic MDSC. Furthermore, miR-155 and miR-21 showed a synergistic effect on MDSC induction via targeting SHIP-1 and phosphatase and tensin homolog, respectively, leading to STAT3 activation. Finally, dexamethasone treatment strongly enhanced MDSC expansion through upregulating miR-155 and miR-21 expression, and the effect of dexamethasone on MDSC induction was abolished by depleting cellular miR-155 and miR-21. These results demonstrate a novel miR-155/miR-21-based regulatory mechanism that modulates functional MDSC induction.
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Affiliation(s)
- Limin Li
- Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210093, China
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157
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Chen J, Wang W, Zhang Y, Chen Y, Hu T. Predicting distant metastasis and chemoresistance using plasma miRNAs. Med Oncol 2013; 31:799. [DOI: 10.1007/s12032-013-0799-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 11/27/2013] [Indexed: 12/11/2022]
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158
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Atarod S, Dickinson AM. MicroRNAs: The Missing Link in the Biology of Graft-Versus-Host Disease? Front Immunol 2013; 4:420. [PMID: 24348483 PMCID: PMC3845018 DOI: 10.3389/fimmu.2013.00420] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 11/18/2013] [Indexed: 01/22/2023] Open
Abstract
Graft-versus-host disease (GVHD) is still the major complication of allogeneic hematopoietic stem cell transplantation. Despite extensive studies in understanding the pathophysiology of GVHD, its pathogenesis remains unclear. Recently, important functions of microRNAs have been demonstrated in various autoimmune diseases and cancers such as psoriasis and lymphoma. This review highlights the need to investigate the role of microRNAs in GVHD and hypothesizes that microRNAs may be one of the missing links in our understanding of GVHD, with the potential for novel therapeutics.
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Affiliation(s)
- Sadaf Atarod
- Haematological Sciences, Institute of Cellular Medicine, Newcastle University , Newcastle upon Tyne , UK
| | - Anne Mary Dickinson
- Haematological Sciences, Institute of Cellular Medicine, Newcastle University , Newcastle upon Tyne , UK
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159
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Sethi S, Ali S, Kong D, Philip PA, Sarkar FH. Clinical Implication of MicroRNAs in Molecular Pathology. Clin Lab Med 2013; 33:773-86. [DOI: 10.1016/j.cll.2013.08.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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160
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Li P, Mao WM, Zheng ZG, Dong ZM, Ling ZQ. Down-regulation of PTEN expression modulated by dysregulated miR-21 contributes to the progression of esophageal cancer. Dig Dis Sci 2013; 58:3483-93. [PMID: 24221338 DOI: 10.1007/s10620-013-2854-z] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 08/20/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIM miR-21, a putative tumor oncomiR, is a frequently overexpressed miRNA in a variety of tumors. Because it targets tumor-suppressor genes it has been linked to tumor progression. In this study we investigated the role of miR-21 in esophageal squamous cell carcinoma (ESCC), and its possible mechanism. METHODS Expression of miR-21 was detected by stem-loop RT-PCR in tissue from 76 invasive ESCC at stage I-IV and in their corresponding para-cancerous histological normal tissues (PCHNT). Thirty endoscopic esophageal mucosal biopsy specimens from non-tumor patients were used as controls. Expression of PTEN in 76 paired ESCC and PCHNT was investigated by real-time RT-PCR and an immunohistochemical method, respectively. Paired tumor and PCHNT specimens of 20 ESCC cases were randomly selected for western blot analysis. The effect of miR-21 on PTEN expression was assessed in the ESCC cell line with an miR-21 inhibitor to reduce miR-21 expression. Furthermore, the roles of miR-21 in cell biology were analyzed by use of miR-21 inhibitor-transfected cells. RESULTS Stem-loop RT-PCR revealed miR-21 was significantly overexpressed in ESCC tissues and cell lines. Overexpression of miR-21 correlated with tumor status, lymph node metastasis, and clinical stage. We demonstrated that knockdown of miR-21 significantly increased expression of PTEN protein. Consequent PTEN expression reduced cell proliferation, invasion, and migration. CONCLUSIONS Our findings suggest that miR-21 could be a potential oncomiR, probably by regulation of PTEN, and a novel prognostic factor for ESCC patients.
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Affiliation(s)
- Pei Li
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450052, People's Republic of China,
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161
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Ni YH, Huang XF, Wang ZY, Han W, Deng RZ, Mou YB, Ding L, Hou YY, Hu QG. Upregulation of a potential prognostic biomarker, miR-155, enhances cell proliferation in patients with oral squamous cell carcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 117:227-33. [PMID: 24439918 DOI: 10.1016/j.oooo.2013.10.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 10/17/2013] [Accepted: 10/24/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVE We sought to investigate the role and diagnostic value of microRNA 155 (miR-155) in OSCC patients. STUDY DESIGN Using real-time quantitative polymerase chain reaction analysis, miR-155 expression levels were assessed in OSCC cell lines and a cancerous HB cell line. The correlation between miR-155 expression level and clinical parameters was analyzed in 46 patients with OSCC. In addition, the effects of miR-155 on OSCC cell proliferation were evaluated by modulating its expression using an miR-155 mimic and antisense miR-155. RESULTS Significant upregulation of miR-155 was found in OSCC cell lines and in tissues of patients with OSCC. The receiver operator characteristic analysis indicated fair-to-good predictability. Overexpression of miR-155 correlated with the histologic grade (P = .033), and the upregulation of miR-155 enhanced OSCC cell proliferation. CONCLUSIONS In OSSC, upregulation of miR-155 correlated with the histologic grade and can be used as a potential prognostic biomarker.
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Affiliation(s)
- Yan-Hong Ni
- Central Laboratory of Stomatology, Institute and Hospital of Stomatology, Nanjing University Medical School, Nanjing Stomatological Hospital, Nanjing, China; State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Nanjing University Medical School, Nanjing, China
| | - Xiao-Feng Huang
- Central Laboratory of Stomatology, Institute and Hospital of Stomatology, Nanjing University Medical School, Nanjing Stomatological Hospital, Nanjing, China
| | - Zhi-Yong Wang
- Department of Oral and Maxillofacial Surgery, Institute and Hospital of Stomatology, Nanjing University Medical School, Nanjing Stomatological Hospital, Nanjing, China
| | - Wei Han
- Central Laboratory of Stomatology, Institute and Hospital of Stomatology, Nanjing University Medical School, Nanjing Stomatological Hospital, Nanjing, China; Department of Oral and Maxillofacial Surgery, Institute and Hospital of Stomatology, Nanjing University Medical School, Nanjing Stomatological Hospital, Nanjing, China
| | - Run-Zhi Deng
- Department of Oral and Maxillofacial Surgery, Institute and Hospital of Stomatology, Nanjing University Medical School, Nanjing Stomatological Hospital, Nanjing, China
| | - Yong-Bin Mou
- Department of Oral and Maxillofacial Surgery, Institute and Hospital of Stomatology, Nanjing University Medical School, Nanjing Stomatological Hospital, Nanjing, China
| | - Liang Ding
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Nanjing University Medical School, Nanjing, China
| | - Ya-Yi Hou
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Nanjing University Medical School, Nanjing, China.
| | - Qin-Gang Hu
- Department of Oral and Maxillofacial Surgery, Institute and Hospital of Stomatology, Nanjing University Medical School, Nanjing Stomatological Hospital, Nanjing, China.
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162
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Silva-Santos RM, Costa-Pinheiro P, Luis A, Antunes L, Lobo F, Oliveira J, Henrique R, Jerónimo C. MicroRNA profile: a promising ancillary tool for accurate renal cell tumour diagnosis. Br J Cancer 2013; 109:2646-53. [PMID: 24129247 PMCID: PMC3833202 DOI: 10.1038/bjc.2013.552] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 08/13/2013] [Accepted: 08/19/2013] [Indexed: 12/12/2022] Open
Abstract
Background: Renal cell tumours (RCTs) are clinically, morphologically and genetically heterogeneous. Accurate identification of renal cell carcinomas (RCCs) and its discrimination from normal tissue and benign tumours is mandatory. We, thus, aimed to define a panel of microRNAs that might aid in the diagnostic workup of RCTs. Methods: Fresh-frozen tissues from 120 RCTs (clear-cell RCC, papillary RCC, chromophobe RCC (chRCC) and oncocytomas: 30 cases each), 10 normal renal tissues and 60 cases of ex-vivo fine-needle aspiration biopsies from RCTs (15 of each subtype validation set) were collected. Expression levels of miR-21, miR-141, miR-155, miR-183 and miR-200b were assessed by quantitative reverse transcription–PCR. Receiver operator characteristic curves were constructed and the areas under the curve were calculated to assess diagnostic performance. Disease-specific survival curves and a Cox regression model comprising all significant variables were computed. Results: Renal cell tumours displayed significantly lower expression levels of miR-21, miR-141 and miR-200b compared with that of normal tissues, and expression levels of all miRs differed significantly between malignant and benign RCTs. Expression analysis of miR-141 or miR-200b accurately distinguished RCTs from normal renal tissues, oncocytoma from RCC and chRCC from oncocytoma. The diagnostic performance was confirmed in the validation set. Interestingly, miR-21, miR-141 and miR-155 expression levels showed prognostic significance in a univariate analysis. Conclusion: The miR-141 or miR-200b panel accurately distinguishes RCC from normal kidney and oncocytoma in tissue samples, discriminating from normal kidney and oncocytoma, whereas miR-21, miR-141 and miR-155 convey prognostic information. This approach is feasible in fine-needle aspiration biopsies and might provide an ancillary tool for routine diagnosis.
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Affiliation(s)
- R M Silva-Santos
- 1] Cancer Epigenetics Group, Research Center of the Portuguese Oncology Institute, Rua Doutor António Bernardino Almeida, 4200-072 Porto, Portugal [2] Department of Genetics, Portuguese Oncology Institute, Porto, Portugal
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163
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Lei L, Huang Y, Gong W. miR-205 promotes the growth, metastasis and chemoresistance of NSCLC cells by targeting PTEN. Oncol Rep 2013; 30:2897-902. [PMID: 24084898 DOI: 10.3892/or.2013.2755] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 08/02/2013] [Indexed: 11/05/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is one of the most common causes of cancer-related mortality worldwide. microRNAs (miRNAs) play critical roles in carcinogenesis. miR-205 has been shown to be upregulated in NSCLC. In the present study, we identified the promotive effects of miR-205 on various significant biological properties of NSCLC cells, and confirmed the regulation of PTEN by miR-205. The expression of miR-205 was examined by quantitative real-time PCR both in NSCLC cell lines and tissues. The effect of miR-205 on PTEN expression was assessed in NSCLC cell lines with miR-205 mimics/inhibitor to elevate/decrease miR-205 expression. Furthermore, the roles of miR-205 in regulating the biological properties of NSCLC cells, including growth, invasion and chemoresistance, were assayed using miR-205 mimic/inhibitor-transfected cells. The 3'-untranslated region (3'-UTR) of PTEN combined with miR-205 and this was confirmed by luciferase reporter assay and western blotting. miR-205 expression was increased in NSCLC cell lines as well as in tissues. Overexpression of miR-205 promoted growth, migration and invasion, and enhanced the chemoresistance of NSCLC cells. Luciferase activity and western blotting demonstrated that miR-205 negatively regulated PTEN at a posttranscriptional level. However, miR-205 knockdown suppressed these processes in A549 cells and increased the expression of PTEN protein. Furthermore, overexpression of PTEN exhibited effects identical with those of the miR-205 inhibitor in NSCLC cells. Our results demonstrated that miR-205 is involved in the tumorigenesis of NSCLC through modulation of the PTEN signaling pathway.
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Affiliation(s)
- Lin Lei
- Department of Oncology, Xiangyang Central Hospital, Xiangyang 441021, P.R. China
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164
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Olivieri F, Rippo MR, Monsurrò V, Salvioli S, Capri M, Procopio AD, Franceschi C. MicroRNAs linking inflamm-aging, cellular senescence and cancer. Ageing Res Rev 2013; 12:1056-68. [PMID: 23688930 DOI: 10.1016/j.arr.2013.05.001] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 04/30/2013] [Accepted: 05/08/2013] [Indexed: 01/01/2023]
Abstract
Epidemiological and experimental data demonstrate a strong correlation between age-related chronic inflammation (inflamm-aging) and cancer development. However, a comprehensive approach is needed to clarify the underlying molecular mechanisms. Chronic inflammation has mainly been attributed to continuous immune cells activation, but the cellular senescence process, which may involve acquisition of a senescence-associated secretory phenotype (SASP), can be another important contributor, especially in the elderly. MicroRNAs (miRs), a class of molecules involved in gene expression regulation, are emerging as modulators of some pathways, including NF-κB, mTOR, sirtuins, TGF-β and Wnt, that may be related to inflammation, cellular senescence and age-related diseases, cancer included. Interestingly, cancer development is largely avoided or delayed in centenarians, where changes in some miRs are found in plasma and leukocytes. We identified miRs that can be considered as senescence-associated (SA-miRs), inflammation-associated (inflamma-miRs) and cancer-associated (onco-miRs). Here we review recent findings concerning three of them, miR-21, -126 and -146a, which target mRNAs belonging to the NF-κB pathway; we discuss their ability to link cellular senescence, inflamm-aging and cancer and their changes in centenarians, and provide an update on the possibility of using miRs to block accumulation of senescent cells to prevent formation of a microenvironment favoring cancer development and progression.
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165
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Hutchison J, Cohen Z, Onyeaguchi BC, Funk J, Nelson MA. How microRNAs influence both hereditary and inflammatory-mediated colon cancers. Cancer Genet 2013; 206:309-16. [PMID: 24042167 PMCID: PMC3893936 DOI: 10.1016/j.cancergen.2013.06.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 06/03/2013] [Accepted: 06/24/2013] [Indexed: 01/08/2023]
Abstract
MicroRNAs have emerged as important post-translational regulators of gene expression and are involved in several physiological and pathological states including the pathogenesis of human colon cancers. In regards to tumor development, microRNAs can act as oncogenes or tumor suppressors. Two hereditary predispositions (i.e., Lynch syndrome and familial adenomatous polyposis) contribute to the development of colon cancer. In addition, individuals who suffer from inflammatory bowel diseases such as Crohn's disease or ulcerative colitis have a higher risk of developing colon cancer. Here, we discuss the occurrence of the deregulated expression of microRNAs in colon cancer that arise as a result of hereditary predisposition and inflammatory bowel disease.
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Affiliation(s)
| | - Zoe Cohen
- Department of Physiology, University of Arizona
| | | | - Janet Funk
- Department of Medicine, Arizona Cancer Center, University of Arizona
| | - Mark A. Nelson
- Department of Pathology, Arizona Cancer Center, University of Arizona
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166
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Wang Z, Bao Z, Yan W, You G, Wang Y, Li X, Zhang W. Isocitrate dehydrogenase 1 (IDH1) mutation-specific microRNA signature predicts favorable prognosis in glioblastoma patients with IDH1 wild type. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2013; 32:59. [PMID: 23988086 PMCID: PMC3847806 DOI: 10.1186/1756-9966-32-59] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 08/13/2013] [Indexed: 01/21/2023]
Abstract
BACKGROUND To date, no prognostic microRNAs (miRNAs) for isocitrate dehydrogenase 1 (IDH1) wild-type glioblastoma multiformes (GBM) have been reported. The aim of the present study was to identify a miRNA signature of prognostic value for IDH1 wild-type GBM patients using miRNA expression dataset from the The Cancer Genome Atlas (TCGA). METHODS Differential expression profiling analysis of miRNAs was performed on samples from 187 GBM patients, comprising 17 mutant-type IDH1 and 170 wild-type IDH1 samples. RESULTS A 23-micoRNA signature which was specific to the IDH1 mutation was revealed. Survival data was available for 140 of the GBM patients with wild-type IDH1. Using these data, the samples were characterized as high-risk or low-risk group according to the ranked protective scores for each of the 23 miRNAs in the 23-miRNA signature. Then, the 23 IDH1 mutation-specific miRNAs were classified as risky group and protective group miRNAs based on the significance analysis of microarrays d-score (SAM d-value) (positive value or negative value). The risky group miRNAs were found to be expressed more in the high-risk samples while the protective group miRNAs were expressed more in the low-risk samples. Patients with high protective scores had longer survival times than those with low protective scores. CONCLUSION These findings show that IDH1 mutation-specific miRNA signature is a marker for favorable prognosis in primary GBM patients with the IDH1 wild type.
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Affiliation(s)
- Zheng Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, No, 6 Tiantan Xili, Dongcheng District, Beijing 100050, China.
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167
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Hong L, Han Y, Zhang Y, Zhang H, Zhao Q, Wu K, Fan D. MicroRNA-21: a therapeutic target for reversing drug resistance in cancer. Expert Opin Ther Targets 2013; 17:1073-80. [PMID: 23865553 DOI: 10.1517/14728222.2013.819853] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Drug resistance is a major clinical obstacle to the successful treatment of human cancer. The microRNAs-21 (miR-21), an oncomiR, may play an important role in the progress of drug resistance. AREAS COVERED This review covers all related literature on miR-21 in drug resistance of human cancers and analyzes the expression, biological functions and targets of it. This study also envisages future developments toward its clinical and therapeutic applications in cancer treatment. EXPERT OPINION The miR-21 may promote the drug resistance of various cancers. Inhibitors of miR-21 may function as effective approaches for reversing drug resistance in cancer cells. There is a tough way from discovering the function of miR-21 to clinical use. Further understanding of miR-21-mediated signaling pathways will help to promote the therapeutic-clinical use of miR-21 in cancer.
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Affiliation(s)
- Liu Hong
- Fourth Military Medical University, State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Xi'an, 710032, Shaanxi Province, China.
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MicroRNA-215 inhibits relapse of colorectal cancer patients following radical surgery. Med Oncol 2013; 30:549. [PMID: 23532818 DOI: 10.1007/s12032-013-0549-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Accepted: 03/19/2013] [Indexed: 12/16/2022]
Abstract
To investigate the role of miR-215 in the relapse following radical surgery of colorectal cancer patients. The clinical data and surgical frozen tumor tissues were retrospectively collected from 125 stage II/III colorectal cancer patients, which contained 60 patients who relapsed and 65 patients who did not relapse within 3 years after surgery. The expression of miR-215 was determined by real-time PCR, and the relationship between miR-215 expression and the relapse was analyzed statistically. miR-215 was downregulated in relapsed patients compared to nonrelapsed patients (P = 0.001). The low expression of miR-215 was significantly correlated with a high probability of 3-year relapse (P = 0.001), which was more obvious in stage III patients (P < 0.001). The multivariate analysis showed that miR-215 expression could function as an independent predictive marker for relapse. It seemed that patients with high expressions of miR-215 could benefit from 5-fluorouracil-containing adjuvant chemotherapy without significant difference, whereas this phenomenon was reverse in patients with low expressions of miR-215. Our study highlighted for the first time that miR-215 could function as a potential predictive marker for relapse following radical surgery of colorectal cancer, and the possible correlation between miR-215 and 5-fluorouracil-containing adjuvant chemotherapy would be validated in the future.
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