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Saleh O, Shihadeh H, Yousef A, Erekat H, Abdallh F, Al-Leimon A, Elsalhy R, Altiti A, Dajani M, AlBarakat MM. The Effect of Intratumor Heterogeneity in Pancreatic Ductal Adenocarcinoma Progression and Treatment. Pancreas 2024; 53:e450-e465. [PMID: 38728212 DOI: 10.1097/mpa.0000000000002342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
BACKGROUND AND OBJECTIVES Pancreatic cancer is one of the most lethal malignancies. Even though many substantial improvements in the survival rates for other major cancer forms were made, pancreatic cancer survival rates have remained relatively unchanged since the 1960s. Even more, no standard classification system for pancreatic cancer is based on cellular biomarkers. This review will discuss and provide updates about the role of stem cells in the progression of PC, the genetic changes associated with it, and the promising biomarkers for diagnosis. MATERIALS AND METHODS The search process used PubMed, Cochrane Library, and Scopus databases to identify the relevant and related articles. Articles had to be published in English to be considered. RESULTS The increasing number of studies in recent years has revealed that the diversity of cancer-associated fibroblasts is far greater than previously acknowledged, which highlights the need for further research to better understand the various cancer-associated fibroblast subpopulations. Despite the huge diversity in pancreatic cancer, some common features can be noted to be shared among patients. Mutations involving CDKN2, P53, and K-RAS can be seen in a big number of patients, for example. Similarly, some patterns of genes and biomarkers expression and the level of their expression can help in predicting cancer behavior such as metastasis and drug resistance. The current trend in cancer research, especially with the advancement in technology, is to sequence everything in hopes of finding disease-related mutations. CONCLUSION Optimizing pancreatic cancer treatment requires clear classification, understanding CAF roles, and exploring stroma reshaping approaches.
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Affiliation(s)
- Othman Saleh
- From the Faculty of Medicine, The Hashemite University, Zarqa
| | | | | | - Hana Erekat
- School of medicine, University of Jordan, Amman
| | - Fatima Abdallh
- From the Faculty of Medicine, The Hashemite University, Zarqa
| | | | | | | | - Majd Dajani
- From the Faculty of Medicine, The Hashemite University, Zarqa
| | - Majd M AlBarakat
- Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
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Minareci Y, Ak N, Sozen H, Tosun OA, Kucukgergin C, Aydin F, Bingul İ, Salihoglu MY, Topuz S. The evaluation of miR-1181 and miR-4314 as serum microRNA biomarkers for epithelial ovarian cancer diagnosis and prognosis. Mol Biol Rep 2024; 51:515. [PMID: 38622482 DOI: 10.1007/s11033-024-09464-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 03/21/2024] [Indexed: 04/17/2024]
Abstract
AIM Epithelial ovarian cancer (EOC) is the most ominous tumor of gynecological cancers due to its poor early detection rate and unfavorable prognosis. To date, there is no reliable screening method for the diagnosis of ovarian cancer at an early stage. MiRNAs are small non-coding RNA molecules, and their main function is to regulate gene expression. The present study compared the serum miR-1181 and miR-4314 levels in patients with EOC and healthy controls to measure the diagnostic and prognostic value as candidate biomarkers. MATERIALS AND METHODS We collected serum samples from a total of 135 participants (69 patients with EOC and 66 healthy controls). Relative expressions of miR-1181 and miR-4314 were measured by quantitative real-time polymerase chain reaction assay (qPCR). RESULTS The present study revealed that both serum miR-1181 and miR-4314 levels in patients with EOC were significantly increased compared to healthy controls for each marker. In addition, there was a significant relationship between miR-1181 and miR-4314 overexpressions and the stage and prognosis of the disease. Finally, patients with high expression levels of miR-1181 and miR-4314 had significantly shorter survival rates than those with low expression levels. CONCLUSION The current study proposed that serum miR-1181 and miR-4314 could discriminate the EOC patients from healthy controls. In addition, both miR-1181 and miR-4314 may be predictive biomarkers for ovarian cancer prognosis. Further studies are needed to confirm the findings of the present study.
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Affiliation(s)
- Yagmur Minareci
- Faculty of Medicine, Department of Gynecology and Obstetrics, Division of Gynecologic Oncology, Istanbul University, Istanbul, Turkey.
| | - Naziye Ak
- Department of Medical Oncology, Institute of Oncology, Istanbul University, Istanbul, Turkey
| | - Hamdullah Sozen
- Faculty of Medicine, Department of Gynecology and Obstetrics, Division of Gynecologic Oncology, Istanbul University, Istanbul, Turkey
| | - Ozgur A Tosun
- Department of Gynecology and Obstetrics, Division of Gynecologic Oncology, Goztepe Research and Education Hospital, Istanbul Medeniyet University, Istanbul, Turkey
| | - Canan Kucukgergin
- Faculty of Medicine, Department of Biochemistry, Istanbul University, Istanbul, Turkey
| | - Fatih Aydin
- Faculty of Medicine, Department of Biochemistry, Istanbul University, Istanbul, Turkey
| | - İlknur Bingul
- Faculty of Medicine, Department of Biochemistry, Istanbul University, Istanbul, Turkey
| | - M Yavuz Salihoglu
- Faculty of Medicine, Department of Gynecology and Obstetrics, Division of Gynecologic Oncology, Istanbul University, Istanbul, Turkey
| | - Samet Topuz
- Faculty of Medicine, Department of Gynecology and Obstetrics, Division of Gynecologic Oncology, Istanbul University, Istanbul, Turkey
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Zhu LR, Yuan RX, Xia XB, Wang Y, Zhu YM, Fi L, Li J. Assessment of a panel of miRNAs in serum and pleural fluid for the differential diagnosis of malignant and benign pleural effusion. Cancer Biomark 2021; 33:71-82. [PMID: 34366325 DOI: 10.3233/cbm-210090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Differential diagnosis between malignant pleural effusion (MPE) and benign pleural effusion (BPE) remains a clinical challenge. OBJECTIVE The aim of the study is to assess the efficacy of the serum and pleural fluid (PF) miRNA panels in distinguishing MPE from BPE. METHODS Fourteen candidate miRNAs which were shown aberrant expression in lung cancer based on previous studies were tested by quantitative real-time PCR (qRT-PCR) in 20 MPE patients and 20 BPE patients. Significantly aberrantly expressed miRNAs were further assessed by qRT-PCR in all patients enrolled in this study. A receiver operating characteristic (ROC) curve was constructed, and the area under the ROC curve (AUC) was calculated to evaluated the diagnostic performance of the miRNAs. RESULTS miR-21, miR-29c and miR-182 were found to be significantly aberrantly expressed in the serum and PF of MPE patients. The AUCs for the combination of miR-21, miR-29c and miR-182 in serum and PF were 0.832 and 0.89 respectively in distinguishing MPE from infection-associated PE including tuberculous pleurisy and parapneumonia PE, and 0.866 and 0.919 respectively for differentiating MPE from heart failure-associated PE, which were superior to AUC of each individual miRNAs. CONCLUSIONS miR-21, miR-29c and miR-182 in serum and PF could be useful biomarkers for MPE of diagnosis.
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Affiliation(s)
- Li-Rong Zhu
- Department of Pulmonary Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China.,Department of Pulmonary Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Rong-Xia Yuan
- Department of Pulmonary Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China.,Department of Respiratory Disease, Yancheng Third People's Hospital, Yancheng, Jiangsu, China.,Department of Pulmonary Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xian-Bin Xia
- Department of Pulmonary Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yi Wang
- Center of Experimental Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yu-Min Zhu
- Department of Pulmonary Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ling Fi
- Department of Pulmonary Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jian Li
- Department of Pulmonary Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
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Hirschfeld M, Rücker G, Weiß D, Berner K, Ritter A, Jäger M, Erbes T. Urinary Exosomal MicroRNAs as Potential Non-invasive Biomarkers in Breast Cancer Detection. Mol Diagn Ther 2021; 24:215-232. [PMID: 32112368 DOI: 10.1007/s40291-020-00453-y] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Breast cancer (BC) is the most frequent malignant disease in women worldwide and is therefore challenging for the healthcare system. Early BC detection remains a leading factor that improves overall outcome and disease management. Aside from established screening procedures, there is a constant demand for additional BC detection methods. Routine BC screening via non-invasive liquid biopsy biomarkers is one auspicious approach to either complete or even replace the current state-of-the-art diagnostics. The study explores the diagnostic potential of urinary exosomal microRNAs with specific BC biomarker characteristics to initiate the potential prospective application of non-invasive BC screening as routine practice. METHODS Based on a case-control study (69 BC vs. 40 healthy controls), expression level quantification and subsequent biostatistical computation of 13 urine-derived microRNAs were performed to evaluate their diagnostic relevance in BC. RESULTS Multilateral statistical assessment determined and repeatedly confirmed a specific panel of four urinary microRNA types (miR-424, miR-423, miR-660, and let7-i) as a highly specific combinatory biomarker tool discriminating BC patients from healthy controls, with 98.6% sensitivity and 100% specificity. DISCUSSION Urine-based BC diagnosis may be achieved through the analysis of distinct microRNA panels with proven biomarker abilities. Subject to further validation, the implementation of urinary BC detection in routine screening offers a promising non-invasive alternative in women's healthcare.
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Affiliation(s)
- Marc Hirschfeld
- Department of Obstetrics and Gynecology, Medical Center, University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Institute of Veterinary Medicine, Georg-August-University Goettingen, Goettingen, Germany
| | - Gerta Rücker
- Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Institute of Medical Biometry and Statistics, Medical Center, University of Freiburg, Freiburg, Germany
| | - Daniela Weiß
- Department of Obstetrics and Gynecology, Medical Center, University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Kai Berner
- Department of Obstetrics and Gynecology, Medical Center, University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Andrea Ritter
- Department of Obstetrics and Gynecology, Medical Center, University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Markus Jäger
- Department of Obstetrics and Gynecology, Medical Center, University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Thalia Erbes
- Department of Obstetrics and Gynecology, Medical Center, University of Freiburg, Freiburg, Germany. .,Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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The Identification of Cytochrome B5 Reductase 2 and Fructose-1,6-Bisphosphatase 1 Proteins in Non-Small Cell Lung Cancer: Proteomics Approach. INTERNATIONAL JOURNAL OF CANCER MANAGEMENT 2020. [DOI: 10.5812/ijcm.101486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Lung cancer is one of the major causes of death worldwide, with more than a million deaths a year. Despite advanced surgical techniques and combined therapies, lung cancer is still a disease with poor prognosis. According to available reports, the number of patients with lung cancer among Iranian men and women is increasing. In a study, 4,361 deaths from lung cancer have been recorded in Iran, which are 9.80% and 6.07% of all cancer deaths among men and women, respectively. Objectives: This study aimed at investigating the proteomes in patients with non-small cell lung cancer (NSCLC) and comparing them with those of the healthy individuals to detect protein markers for the diagnosis of the disease in the early stages. Methods: According to the sample size estimation, the tissue samples of 30 patients with NSCLC were compared with 30 healthy tissues. Proteomics and reverse transcriptase polymerase chain reaction (RT-PCR) methods were used. First, the tissue samples were collected under sterile conditions and then protein was extracted. Next, 2-dimensional electrophoresis and mass spectrometry were performed. Finally, with proteomic analysis in patients and healthy individuals, differences in the proteomic pattern of healthy and cancerous tissue were examined. Results: More than 40 differences were revealed in the proteomics pattern of the healthy and cancerous tissues, and 2 different spots were submitted for liquid chromatography-mass spectrometry (LC-MS/ MS). Then cytochrome b5 reductase 2 (CYB5R2) and fructose-1,6-bisphosphate1 were detected. It has been shown that these proteins down-regulated in cancer tissue compared to healthy tissue. It was also shown molecularly that the expression of fructose-1,6-bisphosphatase 1 messenger ribonucleic acid (mRNA) and cytochrome b5 reductase 2 messenger ribonucleic acid (mRNA) in the cancerous tissue was 0.8 and 0.64 times less than their expression in healthy tissues, respectively. Conclusions: The result of this study, which deals with tumor markers of NSCLC, can be considered as a screening diagnostic test for diagnosis of the disease in the early stages. This research could provide the basis for further research to identify the critical effects of these 2 molecules cytochrome b5 reductase 2 and fructose-1,6-bisphosphate on tissue carcinogenesis. It is recommended to do more thorough research.
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MicroRNAs - novel biomarkers for malignant pleural effusions. Contemp Oncol (Pozn) 2019; 23:133-140. [PMID: 31798327 PMCID: PMC6883963 DOI: 10.5114/wo.2019.89241] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 08/09/2019] [Indexed: 12/24/2022] Open
Abstract
Lung cancer is one of the most common causes of cancer death. Its poor prognosis can be attributed to the patients’ advanced or metastatic presentation at the time of diagnosis. To improve and accelerate the diagnosis, better therapeutic and diagnostic methods are constantly being sought. MicroRNAs (miRNAs) are short nucleotide sequences of single-stranded, non-coding RNA that function as critical post-transcriptional regulators of gene expression. They are identified not only intracellularly, but also in physiological and pathological body fluids. These molecules are responsible for the regulation of approximately 33% of human genes, either regulating the expression of both oncogenes and suppressor genes or acting directly as an oncogene or suppressor gene itself. MiRNAs can contribute to the formation of cancer. The high specificity and sensitivity of miRNAs have been demonstrated with various malignant diseases, and for this reason, they raise particular interest as new and perspective biomarkers of tumours. Our work summarises the available information from recent years regarding the possibility of using miRNAs as biomarkers in the diagnosis of neoplasms. In this review, we focused on malignant pleural effusions with an emphasis on non-small cell lung cancer (NSCLC).
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MicroRNA Signatures in Malignant Pleural Mesothelioma Effusions. DISEASE MARKERS 2019; 2019:8628612. [PMID: 31481984 PMCID: PMC6701424 DOI: 10.1155/2019/8628612] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 05/28/2019] [Accepted: 07/17/2019] [Indexed: 02/08/2023]
Abstract
Malignant pleural mesothelioma (MPM) is an incurable cancer of the pleura that can be difficult to diagnose. Biomarkers for an easier and/or earlier diagnosis are needed. Approximately 90% of MPM patients develop a pleural effusion (PE). PEs are ideal sources of biomarkers as the fluid would almost always require drainage for diagnostic and/or therapeutic reasons. However, differentiating MPM PE from PE caused by other diseases can be challenging. MicroRNAs are popular biomarkers given their stable expression in tissue and fluid. MicroRNAs have been analysed in PE cytology samples for the diagnosis of MPM but have not been measured in frozen/fresh PE. We hypothesise that microRNAs expressed in PE are biomarkers for MPM. TaqMan OpenArray was used to analyse over 700 microRNAs in PE cells and supernatants from 26 MPMs and 21 other PE-causing diseases. In PE cells, combining miR-143, miR-210, and miR-200c could differentiate MPM with an area under the curve (AUC) of 0.92. The three-microRNA signature could also discriminate MPM from a further 40 adenocarcinomas with an AUC of 0.9887. These results suggest that the expression of miR-143, miR-210, and miR-200c in PE cells might provide a signature for diagnosing MPM.
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Tsiakanikas P, Kontos CK, Kerimis D, Papadopoulos IN, Scorilas A. High microRNA-28-5p expression in colorectal adenocarcinoma predicts short-term relapse of node-negative patients and poor overall survival of patients with non-metastatic disease. Clin Chem Lab Med 2019; 56:990-1000. [PMID: 29688883 DOI: 10.1515/cclm-2017-0430] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 12/17/2017] [Indexed: 01/18/2023]
Abstract
BACKGROUND MicroRNAs (miRNAs) may function either as oncogenes or tumor suppressors and are heavily involved in the initiation and progression of cancer, and in metastasis of tumor cells. MicroRNA-28-5p (miR-28-5p) targets several cancer-related genes and is hence involved in cell proliferation, migration, invasion and epithelial-mesenchymal transition. In this study, we investigated the potential diagnostic and prognostic significance of miR-28-5p expression in colorectal adenocarcinoma, the most frequent type of colorectal cancer (CRC). METHODS Therefore, we isolated total RNA from 182 colorectal adenocarcinoma specimens and 86 paired non-cancerous colorectal mucosae. After polyadenylation of 2 μg total RNA and its reverse transcription using an oligo-dT-adapter primer, we quantified miR-28-5p levels using an in-house-developed reverse-transcription real-time quantitative polymerase chain reaction (RT-qPCR) method, based on the SYBR Green chemistry. RESULTS Comparison of miR-28-5p levels among 86 pairs of colorectal tumors and their adjacent non-cancerous mucosae uncovered the downregulation of miR-28-5p expression in the majority of malignant colorectal tumors. More importantly, high miR-28-5p expression predicts poor disease-free survival (DFS) and overall survival (OS) of colorectal adenocarcinoma patients. Multivariate Cox regression analysis revealed that miR-28-5p overexpression is a significant predictor of poor prognosis in colorectal adenocarcinoma, independent of tumor size, histological grade, TNM staging, radiotherapy and chemotherapy. Interestingly, strong miR-28-5p expression retains its predictive potential regarding relapse among patients with negative regional lymph nodes, and predicts poor OS in patients diagnosed with non-metastatic colorectal adenocarcinoma. CONCLUSIONS High miR-28-5p expression predicts poor DFS and OS of colorectal adenocarcinoma patients, independently of clinicopathological prognosticators and standard patient treatment, including radiotherapy and chemotherapy.
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Affiliation(s)
- Panagiotis Tsiakanikas
- Department of Biochemistry and Molecular Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Christos K Kontos
- Department of Biochemistry and Molecular Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitrios Kerimis
- Department of Biochemistry and Molecular Biology, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology, National and Kapodistrian University of Athens, Athens, Greece, Phone: +30 2107274306, Fax: +30 2107274158
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Lee YR, Kim G, Tak WY, Jang SY, Kweon YO, Park JG, Lee HW, Han YS, Chun JM, Park SY, Hur K. Circulating exosomal noncoding RNAs as prognostic biomarkers in human hepatocellular carcinoma. Int J Cancer 2018; 144:1444-1452. [DOI: 10.1002/ijc.31931] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 09/12/2018] [Accepted: 10/01/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Yu Rim Lee
- Department of Internal Medicine; School of Medicine, Kyungpook National University, Kyungpook National University Hospital; Daegu South Korea
| | - Gyeonghwa Kim
- Department of Biochemistry and Cell Biology; Cell and Matrix Research Institute, School of Medicine, Kyungpook National University; Daegu South Korea
| | - Won Young Tak
- Department of Internal Medicine; School of Medicine, Kyungpook National University, Kyungpook National University Hospital; Daegu South Korea
| | - Se Young Jang
- Department of Internal Medicine; School of Medicine, Kyungpook National University, Kyungpook National University Hospital; Daegu South Korea
| | - Young Oh Kweon
- Department of Internal Medicine; School of Medicine, Kyungpook National University, Kyungpook National University Hospital; Daegu South Korea
| | - Jung Gil Park
- Department of Internal Medicine; College of Medicine, Yeungnam University; Daegu South Korea
| | - Hye Won Lee
- Department of Pathology; Keimyung University School of Medicine; Daegu South Korea
| | - Young Seok Han
- Department of Surgery; School of Medicine, Kyungpook National University, Kyungpook National University Hospital; Daegu South Korea
| | - Jae Min Chun
- Department of Surgery; School of Medicine, Kyungpook National University, Kyungpook National University Hospital; Daegu South Korea
| | - Soo Young Park
- Department of Internal Medicine; School of Medicine, Kyungpook National University, Kyungpook National University Hospital; Daegu South Korea
| | - Keun Hur
- Department of Biochemistry and Cell Biology; Cell and Matrix Research Institute, School of Medicine, Kyungpook National University; Daegu South Korea
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Bryzgunova OE, Konoshenko MY, Laktionov PP. MicroRNA-guided gene expression in prostate cancer: Literature and database overview. J Gene Med 2018; 20:e3016. [DOI: 10.1002/jgm.3016] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/15/2018] [Accepted: 03/17/2018] [Indexed: 12/16/2022] Open
Affiliation(s)
- Olga E. Bryzgunova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia and ‘E. Meshalkin National Medical Research Center’ of the Ministry of Health of the Russian Federation; Novosibirsk Russia
| | - Maria Yu Konoshenko
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia and ‘E. Meshalkin National Medical Research Center’ of the Ministry of Health of the Russian Federation; Novosibirsk Russia
| | - Pavel P. Laktionov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia and ‘E. Meshalkin National Medical Research Center’ of the Ministry of Health of the Russian Federation; Novosibirsk Russia
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11
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miR-15a-5p, A Novel Prognostic Biomarker, Predicting Recurrent Colorectal Adenocarcinoma. Mol Diagn Ther 2018; 21:453-464. [PMID: 28405803 DOI: 10.1007/s40291-017-0270-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Colorectal cancer is one of the most common gastrointestinal diseases and the second leading cause of cancer-associated deaths among adults. miR-15a-5p is a post-transcriptional regulator of the proto-oncogene MYB, a transcription factor essential for prolonged cancer cell proliferation and survival. In the current study, we assessed the potential diagnostic and prognostic utility of miR-15a-5p expression in colorectal adenocarcinoma. METHODS To accomplish this goal, total RNA was extracted from 182 colorectal adenocarcinoma specimens and 86 non-cancerous colorectal mucosae. After polyadenylation by poly(A) polymerase and subsequent reverse transcription with an oligo-dT adapter primer, miR-15a-5p expression was analyzed using an in-house developed reverse transcription quantitative real-time PCR method, based on SYBR Green chemistry. SNORD43 (RNU43) was used as an internal control gene. RESULTS miR-15a-5p was significantly upregulated in colorectal tumors compared to non-cancerous colorectal mucosae, while ROC analysis suggested its potential use for diagnostic purposes. Moreover, miR-15a-5p overexpression predicts poor disease-free survival (DFS) and overall survival (OS). Multivariate Cox regression analysis confirmed that miR-15a-5p overexpression is a significant unfavorable prognosticator of DFS in colorectal adenocarcinoma, independent of other established prognostic factors plus treatment of patients. Importantly, miR-15a-5p overexpression retains its unfavorable prognostic value in patients with T3 colorectal adenocarcinoma and in those without distant metastasis (M0). More importantly, the cumulative DFS probability of patients with early stage disease was significantly lower for those with colorectal adenocarcinoma overexpressing miR-15a-5p. DISCUSSION In conclusion, elevated expression of the cancer-associated miR-15a-5p predicts poor DFS and OS of colorectal adenocarcinoma patients. The prognostic value of miR-15a-5p expression regarding DFS is independent of clinicopathological factors currently used for colorectal adenocarcinoma prognosis.
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12
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Gao Y, Dai M, Liu H, He W, Lin S, Yuan T, Chen H, Dai S. Diagnostic value of circulating miR-21: An update meta-analysis in various cancers and validation in endometrial cancer. Oncotarget 2018; 7:68894-68908. [PMID: 27655698 PMCID: PMC5356598 DOI: 10.18632/oncotarget.12028] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 09/02/2016] [Indexed: 01/06/2023] Open
Abstract
MiR-21 has been identified as one of the most common proto-oncogenes. It is hypothesized that up-regulated miR-21 could be served as a potential biomarker for human cancer diagnosis. However, inconsistencies or discrepancies about diagnostic accuracy of circulating miR-21 still remain. In this sense, miR-21′s diagnostic value needs to be fully validated. In this study, we performed an update meta-analysis to estimate the diagnostic value of circulating miR-21 in various human cancers. Additionally, we conducted a validation test on 50 endometrial cancer patients, 50 benign lesion patients and 50 healthy controls. A systematical literature search for relevant articles was performed in Pubmed, Embase and Cochrane Library. A total of 48 studies from 39 articles, involving 3,568 cancer patients and 2,248 controls, were included in this meta-analysis. The overall sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), diagnostic odds ratio (DOR) and area under the curve (AUC) were 0.76 (0.71-0.80), 0.82 (0.79-0.85), 4.3 (3.6-5.1), 0.29 (0.24-0.35), 15 (11-20) and 0.86 (0.83-0.89), respectively. In the validation test, the expression levels of serum miR-21 were significantly higher in benign lesion patients (p = 0.003) and endometrial cancer patients (p = 0.000) compared with that of healthy controls. Endometrial cancer patients showed higher miR-21 expression levels (p = 0.000) compared with benign lesion patients. In conclusion, the meta-analysis shows that circulating miR-21 has excellent performance on the diagnosis for various cancers and the validation test demonstrates that serum miR-21 could be served as a novel biomarker for endometrial carcinoma.
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Affiliation(s)
- Yun Gao
- Medical Science Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, China
| | - Meiyu Dai
- Medical Science Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, China
| | - Haihua Liu
- Medical Science Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, China
| | - Wangjiao He
- Medical Science Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, China
| | - Shengzhang Lin
- Medical Science Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, China
| | - Tianzhu Yuan
- Department of Thoracic Surgery, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, China
| | - Hong Chen
- Department of Haematology, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, China
| | - Shengming Dai
- Medical Science Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, China
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Cirera S, Willumsen LM, Johansen TT, Nielsen LN. Evaluation of microRNA stability in feces from healthy dogs. Vet Clin Pathol 2018; 47:115-121. [PMID: 29393972 DOI: 10.1111/vcp.12566] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Gastrointestinal cancer accounts for approximately 8% of all canine malignancies. Early detection of cancer may have a tremendous impact on both treatment options and prognosis. MicroRNAs (miRNAs), a class of noncoding RNAs that can be found stably expressed in body fluids and feces, have been suggested as valuable human cancer biomarkers. OBJECTIVES The purpose of the study was to investigate the feasibility of detecting miRNAs in canine feces and to determine the miRNA stability in fecal samples stored at different temperatures for different duration. METHODS The levels of 4 Canine familiaris (cfa) miRNAs (cfa-miR-16, cfa-miR-20a, cfa-miR-21, and cfa-miR-92a) were investigated by quantitative real-time PCR(qPCR) in fecal samples from 10 healthy dogs. Fecal samples were collected at 3 different time points and samples from the first time point were stored at different temperatures and for a different duration. RESULTS A statistically significant difference was found in miRNA levels from samples stored at room temperature compared with samples stored at -20°C for cfa-miR-16 and cfa-miR-21. No significant difference was found in the level of the investigated miRNAs over time. CONCLUSIONS Overall, miRNAs are present in dog feces at measurable levels. Some miRNAs seem to be subject to a higher degree of degradation in samples stored at room temperature for 24 hours compared with samples frozen after collection at -20°C. The investigated miRNAs were stably expressed over time. This study provides the basis for further research on miRNA expression profiles as biomarkers for gastrointestinal cancer in dogs.
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Affiliation(s)
- Susanna Cirera
- Department of Veterinary and Animal Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Line M Willumsen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Veterinary Clinical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Thea T Johansen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Veterinary Clinical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lise N Nielsen
- Department of Veterinary Clinical Sciences, University of Copenhagen, Copenhagen, Denmark
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14
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Pan C, Yan X, Li H, Huang L, Yin M, Yang Y, Gao R, Hong L, Ma Y, Shi C, Qin H, Zhang P. Systematic literature review and clinical validation of circulating microRNAs as diagnostic biomarkers for colorectal cancer. Oncotarget 2017; 8:68317-68328. [PMID: 28978119 PMCID: PMC5620259 DOI: 10.18632/oncotarget.19344] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 06/20/2017] [Indexed: 12/16/2022] Open
Abstract
Because patients with colorectal cancer (CRC) are usually diagnosed at an advanced stage and current serum tumor markers have limited diagnostic efficacy, there is an urgent need to identify reliable diagnostic biomarkers. To better define the diagnostic potential of microRNAs (miRNAs) for CRC, we performed a comprehensive evaluation of reported circulating CRC miRNA markers. After a systematic literature review, we selected 30 candidate miRNAs and used quantitative real-time polymerase chain reaction to examine their expression in a training cohort of 120 plasma samples (CRC vs healthy controls (HC) = 60:60). Expression data was confirmed in a validation cohort of 160 plasma samples (CRC vs HC = 80:80). We ultimately identified 5 dysregulated circulating miRNAs (miR-15b, miR-17, miR-21, miR-26b, and miR-145), of which miR-21 and miR-26b proved to have the best diagnostic performance in the training and validation cohorts, respectively. Based on these results, we propose a novel blood-based diagnostic model, integrating 5 CRC-related miRNAs and serum carcinoembryonic antigen (CEA), which provides better diagnostic performance than the combined 5 miRNAs, CEA alone, or any single miRNA. We propose that the novel CRC diagnostic model presented here will be useful for overcoming the limitations faced by current non-invasive diagnostic strategies.
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Affiliation(s)
- Cheng Pan
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China.,Medical Department, Soochow University, Jiangsu 215123, China
| | - Xuebing Yan
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
| | - Hao Li
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
| | - Linsheng Huang
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
| | - Mingming Yin
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
| | - Yongzhi Yang
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
| | - Renyuan Gao
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
| | - Leiming Hong
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China.,Department of General Surgery, Weihai Municipal Hospital, Shandong 264200, China
| | - Yanlei Ma
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
| | - Chenzhang Shi
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
| | - Huanlong Qin
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
| | - Peng Zhang
- Department of General Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University No. 301, Shanghai 200072, China
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15
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miR-34a overexpression predicts poor prognostic outcome in colorectal adenocarcinoma, independently of clinicopathological factors with established prognostic value. Clin Biochem 2017. [PMID: 28624481 DOI: 10.1016/j.clinbiochem.2017.06.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVES MicroRNA-34a (miR-34a) is regulated by TP53 and, in response, downregulates the expression of a gamut of protein-coding genes, including apoptosis regulators, transcription factors, cyclins, and cyclin-dependent kinases. Its upregulation initiates a reprogramming of gene expression and promotes apoptosis. The purpose of this study was the investigation of the potential clinical significance of miR-34a as a molecular prognostic biomarker in colorectal adenocarcinoma using an in-house real-time quantitative PCR (qPCR) methodology. DESIGN AND METHODS Total RNA was extracted from 113 primary colorectal adenocarcinoma specimens and 61 paired non-cancerous colorectal tissue samples. After polyadenylation and reverse transcription, miR-34a molecules were determined using qPCR based on SYBR Green chemistry. Calculations were performed using the comparative CT method. Finally, extensive biostatistical analysis was performed. RESULTS miR-34a expression does not significantly differ between colorectal adenocarcinoma tissue specimens and adjacent non-cancerous mucosae. However, miR-34a expression increases progressively as colorectal adenocarcinoma loses its differentiation, being highest in grade III tumors (P=0.010). Moreover, miR-34a expression is a potential unfavorable prognostic biomarker in colorectal adenocarcinoma, predicting poor disease-free and overall survival (P=0.002 and P=0.019, respectively), independently of classical clinicopathological parameters. Most importantly, miR-34a expression stratifies patients without local (N0) and/or distant metastasis (M0) at the time of diagnosis into two groups with substantially different prognosis (P=0.013 and P=0.002, respectively). CONCLUSIONS High miR-34a levels in colorectal adenocarcinoma predict a rather increased risk for disease recurrence and poor overall survival, particularly in patients at an early TNM stage. The unfavorable prognostic potential of miR-34a expression is independent of established prognostic features of colorectal adenocarcinoma.
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16
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Qian Q, Sun W, Zhu W, Liu Y, Ge A, Ma Y, Zhang Y, Zeng X, Huang M. The role of microRNA-93 regulating angiopoietin2 in the formation of malignant pleural effusion. Cancer Med 2017; 6:1036-1048. [PMID: 28401709 PMCID: PMC5430101 DOI: 10.1002/cam4.1000] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 11/18/2016] [Accepted: 12/04/2016] [Indexed: 12/29/2022] Open
Abstract
The biological roles of miRNAs in the development of malignant pleural effusion (MPE) are unclear. In this study, the miRNA microarray analysis was performed in two different prognosis groups of lung adenocarcinoma patients. Expression profiles of miRNAs in MPEs were identified. With the help of quantification PCR, we confirmed the expression differences of miRNAs and further analyzed their biological functions and relative target genes in vitro. The target gene of miR-93 was estimated by online database, and also, the protein was tested. The target gene and the binding sites of specific miRNA were estimated by online database. The combining capacity of binding sites was verified by luciferase reporter gene assay, and the target gene protein was tested by western blot. We detected 107 miRNAs with expression differences (n = 10) and confirmed significant expression differences in miR-93 and miR-146a in two groups of patients (n = 84). By manipulating miR-93 expression of human lymphatic endothelial cells (HLEC) and human umbilical vein endothelial cells (HUVEC), we discovered that high expression of miR-93 inhibited migration, proliferation, and angiogenesis. And also, miR-93 increased not only apoptosis, but also G1 phase cell block. By using luciferase reporter gene assay and western blot, we confirmed that angiopoietin2 (Ang2) was the target of miR-93. The data showed that miR-93 has an inhibiting effect on pleural effusion. By targeting Ang2, miR-93 regulates angiogenesis and lymphangiogenesis and plays a role in pathogenetic mechanism of MPE. MiR-93/Ang2 may shed light on potential new targets in cancer treatment.
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Affiliation(s)
- Qian Qian
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, 300# Guangzhou Road, Nanjing, Jiangsu, 210029, China.,Respiratory Medicine, Nanjing Chest Hospital, Medicine School of Southeast University, 215# Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Wenkui Sun
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, 300# Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Wen Zhu
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, 300# Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Yanan Liu
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, 300# Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Ai Ge
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, 300# Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Yuan Ma
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, 300# Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Yu Zhang
- Respiratory Medicine, Nanjing Chest Hospital, Medicine School of Southeast University, 215# Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Xiaoning Zeng
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, 300# Guangzhou Road, Nanjing, Jiangsu, 210029, China
| | - Mao Huang
- Department of Respiratory & Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, 300# Guangzhou Road, Nanjing, Jiangsu, 210029, China
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17
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Kao HW, Pan CY, Lai CH, Wu CW, Fang WL, Huang KH, Lin WC. Urine miR-21-5p as a potential non-invasive biomarker for gastric cancer. Oncotarget 2017; 8:56389-56397. [PMID: 28915598 PMCID: PMC5593569 DOI: 10.18632/oncotarget.16916] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/14/2017] [Indexed: 12/12/2022] Open
Abstract
Many reports have implicated that microRNAs involve in cancer development and progression, such as miR-155 in breast cancers and miR-196 in gastric cancers. Furthermore, microRNAs are more stable than typical protein-coding gene mRNAs in varieties of clinical samples including body fluids. This suggests that they are potentially valuable biomarkers for cancer monitoring. In this study, we have used urine samples of gastric cancer patients to demonstrate the feasibility of urine microRNAs for gastric cancer detection. Urine samples of gastric cancer patients were extracted for total RNA, which were examined for the expression of miR-21-5p using quantitative stem-loop PCR. Our results demonstrated that miR-21-5p could be detected in small amounts of urine samples with good stability, and the expression levels of miR-21-5p were reduced following surgical removal of gastric cancer tissues. These results implicate that urine miR-21-5p could be utilized as a novel non-invasive biomarker of gastric cancer detection and monitoring.
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Affiliation(s)
- Hsiao-Wei Kao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chao-Yu Pan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.,Institute of Biomedical Informatics, National Yang-Ming University, Taipei, Taiwan
| | - Chun-Hung Lai
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chew-Wun Wu
- Department of Surgery, Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan
| | - Wen-Liang Fang
- Department of Surgery, Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan
| | - Kuo-Hung Huang
- Department of Surgery, Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan
| | - Wen-Chang Lin
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.,Institute of Biomedical Informatics, National Yang-Ming University, Taipei, Taiwan
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18
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Pattern recognition for predictive, preventive, and personalized medicine in cancer. EPMA J 2017; 8:51-60. [PMID: 28620443 DOI: 10.1007/s13167-017-0083-9] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 02/05/2017] [Indexed: 12/18/2022]
Abstract
Predictive, preventive, and personalized medicine (PPPM) is the hot spot and future direction in the field of cancer. Cancer is a complex, whole-body disease that involved multi-factors, multi-processes, and multi-consequences. A series of molecular alterations at different levels of genes (genome), RNAs (transcriptome), proteins (proteome), peptides (peptidome), metabolites (metabolome), and imaging characteristics (radiome) that resulted from exogenous and endogenous carcinogens are involved in tumorigenesis and mutually associate and function in a network system, thus determines the difficulty in the use of a single molecule as biomarker for personalized prediction, prevention, diagnosis, and treatment for cancer. A key molecule-panel is necessary for accurate PPPM practice. Pattern recognition is an effective methodology to discover key molecule-panel for cancer. The modern omics, computation biology, and systems biology technologies lead to the possibility in recognizing really reliable molecular pattern for PPPM practice in cancer. The present article reviewed the pathophysiological basis, methodology, and perspective usages of pattern recognition for PPPM in cancer so that our previous opinion on multi-parameter strategies for PPPM in cancer is translated into real research and development of PPPM or precision medicine (PM) in cancer.
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19
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Rapti SM, Kontos CK, Papadopoulos IN, Scorilas A. High miR-96 levels in colorectal adenocarcinoma predict poor prognosis, particularly in patients without distant metastasis at the time of initial diagnosis. Tumour Biol 2016; 37:11815-11824. [PMID: 27044381 DOI: 10.1007/s13277-016-5023-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 03/18/2016] [Indexed: 12/27/2022] Open
Abstract
MicroRNA-96 (miR-96) is an oncomiR that facilitates the development of malignant tumors by promoting growth, proliferation, and survival of cancer cells. Previous studies using high-throughput techniques have shown that miR-96 is upregulated in colorectal cancer compared to adjacent normal colorectal tissue. The aim of this study was the investigation of the potential clinical value of miR-96 as a molecular prognostic biomarker in colorectal adenocarcinoma. For this purpose, total RNA was extracted from 108 primary colorectal adenocarcinoma samples and 54 paired non-cancerous colorectal tissue specimens. After polyadenylation and reverse transcription, miR-96 molecules were determined using an in-house developed real-time quantitative PCR based on SYBR Green chemistry. Calculations were carried out with the comparative CT method, using SNORD48 as endogenous reference gene. Finally, extensive biostatistical analysis was performed and showed that miR-96 is significantly upregulated in colorectal adenocarcinoma specimens compared to their non-cancerous counterparts (p < 0.001) as well as in tumors having invaded regional lymph nodes (p = 0.009) and those of advanced TNM stage (p = 0.008). miR-96 expression is an unfavorable prognostic marker in colorectal adenocarcinoma, predicting poor disease-free and overall survival (p = 0.041 and 0.028, respectively), independently of classical clinicopathological parameters. Most importantly, miR-96 expression stratifies patients without distant metastasis (M0) at the time of diagnosis into two groups with substantially different prognosis (p = 0.040). In conclusion, high tissue levels of miR-96 are associated with advanced stages of colorectal adenocarcinoma and predict an increased risk for disease recurrence and poor overall survival, especially in patients without distant metastasis at the time of diagnosis.
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Affiliation(s)
- Stamatia-Maria Rapti
- Department of Biochemistry and Molecular Biology, University of Athens, Panepistimiopolis, Athens, 15701, Greece
| | - Christos K Kontos
- Department of Biochemistry and Molecular Biology, University of Athens, Panepistimiopolis, Athens, 15701, Greece
| | - Iordanis N Papadopoulos
- Fourth Surgery Department, University General Hospital "Attikon", Haidari, Athens, 12462, Greece
| | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology, University of Athens, Panepistimiopolis, Athens, 15701, Greece.
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20
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Aravalli RN, Steer CJ. Circulating microRNAs: novel biomarkers for early detection of colorectal cancer. Transl Res 2015; 166:219-24. [PMID: 25940044 DOI: 10.1016/j.trsl.2015.04.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 04/09/2015] [Indexed: 02/06/2023]
Affiliation(s)
- Rajagopal N Aravalli
- Department of Radiology, University of Minnesota Medical School, Minneapolis, Minn.
| | - Clifford J Steer
- Department of Medicine, University of Minnesota Medical School, Minneapolis, Minn; Department of Genetics, Cell Biology and Development, University of Minnesota Medical School, Minneapolis, Minn.
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21
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Humeau M, Vignolle-Vidoni A, Sicard F, Martins F, Bournet B, Buscail L, Torrisani J, Cordelier P. Salivary MicroRNA in Pancreatic Cancer Patients. PLoS One 2015; 10:e0130996. [PMID: 26121640 PMCID: PMC4486170 DOI: 10.1371/journal.pone.0130996] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 05/27/2015] [Indexed: 12/21/2022] Open
Abstract
Background Pancreatic cancer is the fourth leading cause of cancer death in Western countries, with the lowest 1-year survival rate among commonly diagnosed cancers. Reliable biomarkers for pancreatic cancer diagnosis are lacking and are urgently needed to allow for curative surgery. As microRNA (miRNA) recently emerged as candidate biomarkers for this disease, we explored in the present pilot study the differences in salivary microRNA profiles between patients with pancreatic tumors that are not eligible for surgery, precancerous lesions, inflammatory disease or cancer-free patients as a potential early diagnostic tool. Methods Whole saliva samples from patients with pancreatic cancer (n = 7), pancreatitis (n = 4), IPMN (n = 2), or healthy controls (n = 4) were obtained during endoscopic examination. After total RNA isolation, expression of 94 candidate miRNAs was screened by q(RT)PCR using Biomark Fluidgm. Human-derived pancreatic cancer cells were xenografted in athymic mice as an experimental model of pancreatic cancer. Results We identified hsa-miR-21, hsa-miR-23a, hsa-miR-23b and miR-29c as being significantly upregulated in saliva of pancreatic cancer patients compared to control, showing sensitivities of 71.4%, 85.7%, 85,7% and 57%, respectively and excellent specificity (100%). Interestingly, hsa-miR-23a and hsa-miR23b are overexpressed in the saliva of patients with pancreatic cancer precursor lesions. We found that hsa-miR-210 and let-7c are overexpressed in the saliva of patients with pancreatitis as compared to the control group, with sensitivity of 100% and 75%, and specificity of 100% and 80%, respectively. Last hsa-miR-216 was upregulated in cancer patients as compared to patients diagnosed with pancreatitis, with sensitivity of 50% and specificity of 100%. In experimental models of PDAC, salivary microRNA detection precedes systemic detection of cancer cells markers. Conclusions Our novel findings indicate that salivary miRNA are discriminatory in pancreatic cancer patients that are not eligible for surgery. In addition, we demonstrate in experimental models that salivary miRNA detection precedes systemic detection of cancer cells markers. This study stems for the use of salivary miRNA as biomarker for the early diagnosis of patients with unresectable pancreatic cancer.
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Affiliation(s)
- Marine Humeau
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France
- Department of Surgery, CHU Toulouse- Rangueil, Toulouse, France
| | - Alix Vignolle-Vidoni
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France
- Department of Gastroenterology, CHU Toulouse- Rangueil, Toulouse, France
| | - Flavie Sicard
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France
| | - Frédéric Martins
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France
- INSERM U1048, F-31000 Toulouse, France
| | - Barbara Bournet
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France
- Department of Gastroenterology, CHU Toulouse- Rangueil, Toulouse, France
| | - Louis Buscail
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France
- Department of Gastroenterology, CHU Toulouse- Rangueil, Toulouse, France
| | - Jérôme Torrisani
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France
| | - Pierre Cordelier
- Inserm, UMR1037 CRCT, F-31000 Toulouse, France
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, F-31000 Toulouse, France
- * E-mail:
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22
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Possible role for microRNAs as inter-species mediators of epigenetic information in disease pathogenesis: Is the non-coding dark matter of the genome responsible for epigenetic interindividual or interspecies communication? Med Hypotheses 2015; 84:150-4. [DOI: 10.1016/j.mehy.2014.11.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Revised: 11/16/2014] [Accepted: 11/28/2014] [Indexed: 01/27/2023]
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23
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Zhang C, Peng G. Non-coding RNAs: An emerging player in DNA damage response. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2015; 763:202-11. [DOI: 10.1016/j.mrrev.2014.11.003] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Revised: 11/03/2014] [Accepted: 11/04/2014] [Indexed: 01/02/2023]
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24
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Adamopoulos PG, Kontos CK, Rapti SM, Papadopoulos IN, Scorilas A. miR-224 overexpression is a strong and independent prognosticator of short-term relapse and poor overall survival in colorectal adenocarcinoma. Int J Oncol 2014; 46:849-59. [PMID: 25420464 DOI: 10.3892/ijo.2014.2775] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 12/04/2013] [Indexed: 12/11/2022] Open
Abstract
Colorectal adenocarcinoma constitutes the most frequent form of colorectal cancer and a serious cause of cancer-related deaths. The expression of multiple miRNAs, including miR-224, is deregulated in colorectal adenocarcinoma. The aim of this study was the investigation of the prognostic value of miR-224 in colorectal adenocarcinoma. For this purpose, total RNA was isolated from 115 colorectal adenocarcinomas and 66 adjacent non-cancer mucosae. Total RNA (2 µg) was polyadenylated and reverse transcribed. A quantitative PCR method based on SYBR-Green chemistry was developed and applied for the quantification of miR-224 levels, followed by extensive biostatistical analysis. miR-224 levels in malignant colorectal adenocarcinomas ranged between 1.81 and 187.75 RQU (miR-224 copies/1,000 SNORD48 copies) with a median of 34.27, and were significantly elevated, compared to miR-224 levels in adjacent non-cancer mucosae (p<0.001). Enhanced miR-224 expression constitutes a rather strong prognosticator in colorectal adenocarcinoma, predicting short-term relapse and poor overall survival in these patients (p=0.012 and p=0.005, respectively), independent of established clinicopathological parameters. In conclusion, miR-224 is significantly upregulated in malignant colorectal tumors compared to adjacent non-cancer mucosae, and its enhanced expression constitutes an independent predictor of short-term relapse and poor overall survival in colorectal adenocarcinoma patients.
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Affiliation(s)
- Panagiotis G Adamopoulos
- Department of Biochemistry and Molecular Biology, University of Athens, Panepistimiopolis, Athens, Greece
| | - Christos K Kontos
- Department of Biochemistry and Molecular Biology, University of Athens, Panepistimiopolis, Athens, Greece
| | - Stamatia-Maria Rapti
- Department of Biochemistry and Molecular Biology, University of Athens, Panepistimiopolis, Athens, Greece
| | - Iordanis N Papadopoulos
- Fourth Surgery Department, University of Athens, University General Hospital 'Attikon', Athens, Greece
| | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology, University of Athens, Panepistimiopolis, Athens, Greece
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25
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Circulating microRNAs: emerging biomarkers for diagnosis and prognosis in patients with gastrointestinal cancers. Clin Sci (Lond) 2014; 128:1-15. [PMID: 25168167 DOI: 10.1042/cs20140089] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
To identify novel non-invasive biomarkers for improved detection, risk assessment and prognostic evaluation of cancer, expression profiles of circulating microRNAs are currently under evaluation. Circulating microRNAs are highly promising candidates in this context, as they present some key characteristics for cancer biomarkers: they are tissue-specific with reproducible expression and consistency among individuals from the same species, they are potentially derived directly from the tumour and therefore might correlate with tumour progression and recurrence, and they are bound to proteins or contained in subcellular particles, such as microvesicles or exosomes, making them highly stable and resistant to degradation. The present review highlights the origin of circulating microRNAs, their stability in blood samples, and techniques to isolate exosomal microRNAs, and then addresses the current evidence supporting potential clinical applications of circulating miRNAs for diagnostic and prognostic purposes.
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26
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Matuszcak C, Haier J, Hummel R, Lindner K. MicroRNAs: Promising chemoresistance biomarkers in gastric cancer with diagnostic and therapeutic potential. World J Gastroenterol 2014; 20:13658-13666. [PMID: 25320504 PMCID: PMC4194550 DOI: 10.3748/wjg.v20.i38.13658] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 04/29/2014] [Accepted: 05/26/2014] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer (GC) is the fourth most common cancer worldwide and ranks second in global cancer mortality statistics. Perioperative chemotherapy plays an important role in the management and treatment of advanced stage disease. However, response to chemotherapy varies widely, with some patients presenting no or only minor response to treatment. Hence, chemotherapy resistance is a major clinical problem that impacts on outcome. Unfortunately, to date there are no reliable biomarkers available that predict response to chemotherapy before the start of the treatment, or that allow modification of chemotherapy resistance. MicroRNAs (miRNAs) could provide an answer to this problem. miRNAs are involved in the initiation and progression of a variety of cancer types, and there is evidence that miRNAs impact on resistance towards chemotherapeutic drugs as well. This current review aims to provide an overview about the potential clinical applicability of miRNAs as biomarkers for chemoresistance in GC. The authors focus in this context on the potential of miRNAs to predict sensitivity towards different chemotherapeutics, and on the potential of miRNAs to modulate sensitivity and resistance towards chemotherapy in GC.
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Shen J, Hu Q, Schrauder M, Yan L, Wang D, Medico L, Guo Y, Yao S, Zhu Q, Liu B, Qin M, Beckmann MW, Fasching PA, Strick R, Johnson CS, Ambrosone CB, Zhao H, Liu S. Circulating miR-148b and miR-133a as biomarkers for breast cancer detection. Oncotarget 2014; 5:5284-94. [PMID: 25051376 PMCID: PMC4170614 DOI: 10.18632/oncotarget.2014] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 05/26/2014] [Indexed: 12/14/2022] Open
Abstract
Circulating microRNAs have drawn a great deal of attention as promising novel biomarkers for breast cancer. However, to date, the results are mixed. Here, we performed a three-stage microRNA analysis using plasma samples from breast cancer patients and healthy controls, with efforts taken to address several pitfalls in detection techniques and study design observed in previous studies. In the discovery phase with 122 Caucasian study subjects, we identified 43 microRNAs differentially expressed between breast cancer cases and healthy controls. When those microRNAs were compared with published data from other studies, we identified three microRNAs, including miR-148b, miR-133a and miR-409-3p, whose plasma levels were significantly higher in breast cancer cases than healthy controls and were also significant in previous independent studies. In the validation phase with 50 breast cancer cases and 50 healthy controls, we validated the associations with breast cancer detection for miR-148b and miR-133a (P = 1.5×10-6 and 1.3×10-10, respectively). In the in-vitro study phase, we found that both miR-148b and miR-133a were secreted from breast cancer cell lines, showing their secretory potential and possible tumor origin. Thus, our data suggest that both miR-148b and miR-133a have potential use as biomarkers for breast cancer detection.
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Affiliation(s)
- Jie Shen
- Department of Epidemiology, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Qiang Hu
- Department of Biostatistics & Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY, USA
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing, P.R.China
| | - Michael Schrauder
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Li Yan
- Department of Biostatistics & Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Dan Wang
- Department of Biostatistics & Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Leonardo Medico
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Yuqing Guo
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Song Yao
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Qianqian Zhu
- Department of Biostatistics & Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Biao Liu
- Department of Biostatistics & Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Maochun Qin
- Department of Biostatistics & Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Matthias W. Beckmann
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Peter A. Fasching
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Reiner Strick
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Candace S. Johnson
- Department of Pharmacology and Therapeutics, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Christine B. Ambrosone
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Hua Zhao
- Department of Epidemiology, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Song Liu
- Department of Biostatistics & Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY, USA
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Lerario AM, Moraitis A, Hammer GD. Genetics and epigenetics of adrenocortical tumors. Mol Cell Endocrinol 2014; 386:67-84. [PMID: 24220673 PMCID: PMC3943605 DOI: 10.1016/j.mce.2013.10.028] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 10/24/2013] [Indexed: 02/08/2023]
Abstract
Adrenocortical tumors are common neoplasms. Most are benign, nonfunctional and clinically irrelevant. However, adrenocortical carcinoma is a rare disease with a dismal prognosis and no effective treatment apart from surgical resection. The molecular genetics of adrenocortical tumors remain poorly understood. For decades, molecular studies relied on a small number of samples and were directed to candidate-genes. This approach, based on the elucidation of the genetics of rare genetic syndromes in which adrenocortical tumors are a manifestation, has led to the discovery of major dysfunctional molecular pathways in adrenocortical tumors, such as the IGF pathway, the Wnt pathway and TP53. However, with the advent of high-throughput methodologies and the organization of international consortiums to obtain a larger number of samples and high-quality clinical data, this paradigm is rapidly changing. In the last decade, genome-wide expression profile studies, microRNA profiling and methylation profiling allowed the identification of subgroups of tumors with distinct genetic markers, molecular pathways activation patterns and clinical behavior. As a consequence, molecular classification of tumors has proven to be superior to traditional histological and clinical methods in prognosis prediction. In addition, this knowledge has also allowed the proposal of molecular-targeted approaches to provide better treatment options for advanced disease. This review aims to summarize the most relevant data on the rapidly evolving field of genetics of adrenal disorders.
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Affiliation(s)
- Antonio M Lerario
- Adrenal Disorders Unit - LIM/42, Department of Endocrinology and Metabolism, Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo (HC-FMUSP), Sao Paulo, Brazil
| | - Andreas Moraitis
- Division of Metabolism, Endocrinology and Diabetes, Department of Internal Medicine Endocrine Oncology Program, University of Michigan Comprehensive Cancer Center, 1500 E. Medical Center Drive, Ann Arbor, MI 48109-5902, USA
| | - Gary D Hammer
- Endocrine Oncology Program, Center for Organogenesis, University of Michigan Health System, 109 Zina Pitcher Place, 1528 BSRB, Ann Arbor, MI 48109-2200, USA.
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Zhang F, Li X, Xu X, Cai D, Zhang J. Relationship between the pH of enema solutions and intestinal damage in rabbits. Biol Res Nurs 2014; 17:78-86. [PMID: 25504953 DOI: 10.1177/1099800414527154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Mechanical enemas can lead to intestinal mucosal injuries and bowel barrier damage, presenting as electrolyte disturbances and functional intestinal disorders. Most researchers believe that the mechanism of injury is related to osmolality, volume and temperature of the solution, infusion pressure, and the composition of the enema tube. We hypothesized that the pH of the enema solution may also contribute to intestinal damage. We administered enema solutions--normal saline, soapsuds, or vinegar (neutral, alkaline, or acidic solutions, respectively)--to three groups of rabbits (n = 20 per group). The solutions were standardized for volume and temperature and the soapsuds and vinegar solutions were adjusted to be isotonic with normal saline or deionized water. We also included a control group (n = 20) in which the enema tubes were inserted but no solution was administered. We biopsied 3 sites (rectum and distal and proximal colon). Damage to intestinal mucosa was observed by light microscopy and transmission electron microscopy. In order to explore the detection of damage using noninvasive methods, cyclooxygenase (COX)-2 gene expression was measured in the exfoliated cells gathered from postenema defecation. Epithelial loss, inflammatory reaction, and cellular microstructure damage was increased in the vinegar and soapsuds groups. Also, exfoliated cells in these groups had higher COX-2 expression than the normal saline group. The acidic and alkaline enema solutions thus caused more severe damage to the intestinal mucosa compared to the neutral liquid, supporting our hypothesis. Further, the detection of COX-2 expression shows promise as a noninvasive method for estimating enema-induced damage.
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Affiliation(s)
- Feng Zhang
- School of Nursing, Nantong University, Nantong City, Jiangsu Province, China
| | - Xia Li
- School of Nursing, Nantong University, Nantong City, Jiangsu Province, China
| | - Xujuan Xu
- Affiliated hospital of Nantong University, Nantong City, Jiangsu Province, China
| | - Duanying Cai
- School of Nursing, Nantong University, Nantong City, Jiangsu Province, China
| | - Jianguo Zhang
- Affiliated hospital of Nantong University, Nantong City, Jiangsu Province, China
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30
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MicroRNAs in the Neural Retina. Int J Genomics 2014; 2014:165897. [PMID: 24745005 PMCID: PMC3972879 DOI: 10.1155/2014/165897] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 01/15/2014] [Accepted: 01/21/2014] [Indexed: 12/11/2022] Open
Abstract
The health and function of the visual system rely on a collaborative interaction between diverse classes of molecular regulators. One of these classes consists of transcription factors, which are known to bind to DNA and control the transcription activities of their target genes. For a long time, it was thought that the transcription factors were the only regulators of gene expression. More recently, however, a novel class of regulators emerged. This class consists of a large number of small noncoding endogenous RNAs, namely, miRNAs. The miRNAs compose an essential component of posttranscriptional gene regulation, since they ultimately control the fate of gene transcripts. The retina, as a part of the central nervous system, is a well-established model for unraveling the molecular mechanisms underlying neuronal and glial functions. Numerous recent efforts have been made towards identification of miRNAs and their inferred roles in the visual pathway. In this review, we summarize the current state of our knowledge regarding the expression and function of miRNA in the neural retina and we discuss their potential uses as biomarkers for some retinal disorders.
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Anjuman N, Li N, Guarnera M, Stass SA, Jiang F. Evaluation of lung flute in sputum samples for molecular analysis of lung cancer. Clin Transl Med 2013; 2:15. [PMID: 24053570 PMCID: PMC3848735 DOI: 10.1186/2001-1326-2-15] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 09/10/2013] [Indexed: 12/16/2022] Open
Abstract
Background Molecular analysis of sputum provides a promising approach for lung cancer diagnosis, yet is limited by the difficulty in collecting the specimens from individuals who can’t spontaneously expectorate sputum. Lung Flute is a small self-powered audio device that can induce sputum by generating sound waves and vibrating in the airways of the lungs. Here we propose to evaluate the usefulness of Lung Flute for sputum sampling to assist diagnosis of lung cancer. Methods Forty-three stage I lung cancer patients and 47 cancer-free individuals who couldn’t spontaneously cough sputum were instructed to use Lung Flute for sputum sampling. Expressions of two microRNAs, miRs-31 and 210, were determined in the specimens by qRT-PCR. The results were compared with sputum cytology. Results Sputum was easily collected from 39 of 43 (90.7%) lung cancer patients and 42 of 47 (89.4%) controls with volume ranges from 1 to 5 ml (median, 2.6 ml). The specimens had less than 4% oral squamous cells, indicating that sputum was obtained from low respiratory tract. Expressions of miRs-31 and 210 in sputum were considerably higher in cancer patients than cancer-free individuals (8.990 vs. 4.514; 0.6847 vs. 0.3317; all P <0.001). Combined use of the two miRNAs produced a significantly higher sensitivity (61.5% vs. 35.9%, P = 0.002) and a slightly lower specificity (90.5% vs. 95.2%, p = 0.03) compared with cytology for lung cancer diagnosis. Conclusion Lung Flute could potentially be useful in convenient and efficient collection of sputum for molecular diagnosis of lung cancer.
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Affiliation(s)
- Nigar Anjuman
- Departments of Pathology, University of Maryland School of Medicine, 10 South Pine Street, MSTF 7th floor, Baltimore, MD 21201-1192, USA.
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Noncoding RNA in oncogenesis: a new era of identifying key players. Int J Mol Sci 2013; 14:18319-49. [PMID: 24013378 PMCID: PMC3794782 DOI: 10.3390/ijms140918319] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 08/23/2013] [Accepted: 08/30/2013] [Indexed: 12/19/2022] Open
Abstract
New discoveries and accelerating progresses in the field of noncoding RNAs (ncRNAs) continuously challenges our deep-rooted doctrines in biology and sometimes our imagination. A growing body of evidence indicates that ncRNAs are important players in oncogenesis. While a stunning list of ncRNAs has been discovered, only a small portion of them has been examined for their biological activities and very few have been characterized for the molecular mechanisms of their action. To date, ncRNAs have been shown to regulate a wide range of biological processes, including chromatin remodeling, gene transcription, mRNA translation and protein function. Dysregulation of ncRNAs contributes to the pathogenesis of a variety of cancers and aberrant ncRNA expression has a high potential to be prognostic in some cancers. Thus, a new cancer research era has begun to identify novel key players of ncRNAs in oncogenesis. In this review, we will first discuss the function and regulation of miRNAs, especially focusing on the interplay between miRNAs and several key cancer genes, including p53, PTEN and c-Myc. We will then summarize the research of long ncRNAs (lncRNAs) in cancers. In this part, we will discuss the lncRNAs in four categories based on their activities, including regulating gene expression, acting as miRNA decoys, mediating mRNA translation, and modulating protein activities. At the end, we will also discuss recently unraveled activities of circular RNAs (circRNAs).
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Clinical advances in molecular biomarkers for cancer diagnosis and therapy. Int J Mol Sci 2013; 14:14771-84. [PMID: 23863689 PMCID: PMC3742272 DOI: 10.3390/ijms140714771] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 06/28/2013] [Accepted: 07/03/2013] [Indexed: 12/20/2022] Open
Abstract
Cancer diagnosis is currently undergoing a paradigm shift with the incorporation of molecular biomarkers as part of routine diagnostic panel. The molecular alteration ranges from those involving the DNA, RNA, microRNAs (miRNAs) and proteins. The miRNAs are recently discovered small non-coding endogenous single-stranded RNAs that critically regulates the development, invasion and metastasis of cancers. They are altered in cancers and have the potential to serve as diagnostic markers for cancer. Moreover, deregulating their activity offers novel cancer therapeutic approaches. The availability of high throughput techniques for the identification of altered cellular molecules allowed their use in cancer diagnosis. Their application to a variety of body specimens from blood to tissues has been helpful for appreciating their use in the clinical context. The development of innovative antibodies for immunohistochemical detection of proteins also assists in diagnosis and risk stratification. Overall, the novel cancer diagnostic tools have extended their application as prognostic risk factors and can be used as targets for personalized medicine.
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