| Title |
Elevated miR-483-3p expression is an early event and indicates poor prognosis in pancreatic ductal adenocarcinoma
|
|---|---|
| Published in |
Tumor Biology, June 2015
|
| DOI | 10.1007/s13277-015-3690-x |
| Pubmed ID | |
| Authors |
Cuiping Wang, Yang Sun, Huanwen Wu, Shuangni Yu, Li Zhang, Yunxiao Meng, Mingyang Liu, Haiyan Yang, Pingping Liu, Xinxin Mao, Zhaohui Lu, Jie Chen |
| Abstract |
MiR-483-3p has been reported to be widely involved in diverse human malignancies. However, the exact role of miR-483-3p remains elusive in pancreatic ductal adenocarcinoma (PDAC). The objective of this study is to determine the expression pattern and clinical implications of miR-483-3p in PDAC. MiR-483-3p levels were evaluated by locked nucleic acid-in situ hybridization (LNA-ISH) in a tissue microarray including 63 PDAC tumors and 10 normal pancreatic tissues, followed by evaluation in an independent set of 117 pairs of matched PDAC tumors and adjacent tumor-free pancreatic tissues. Expression of miR-483-3p was further evaluated in pancreatic intra-epithelial neoplasias (PanINs) and chronic pancreatitis (CP). The impact of miR-483-3p on cell proliferation, growth, and anchorage-independent colony formation was also assessed in vitro and in vivo. Microarray analysis revealed that miR-483-3p was positively stained in 61 (96.8 %) PDAC samples, but not detectable in normal pancreatic duct tissue. In the 117 PDAC samples, 100 % were miR-483-3p positive, with 55.6 % (65/117) strongly positive, compared to only 13.7 % (16/117) weakly positive in adjacent normal pancreatic duct tissues. MiR-483-3p expression was associated with tumor grading (p < 0.05) and was an independent predictor of poor overall survival in multivariate analysis (HR = 2.584; 95 % CI = 1.268-5.264). Moreover, from PanIN1 to PanIN3, the rate of strong miR-483-3p-positive staining was 0 % (0/39), 14.8 % (4/27), and 87.5 % (14/16), respectively. Six (54.5 %) CP samples were only weakly stained for miR-483-3p. Inhibition of miR-483-3p suppressed cell proliferation, growth, and colony formation in vitro and decreased tumor cell growth in nude mouse xenografts in vivo. These results suggest that aberrant miR-483-3p expression is an early event in PDAC tumorigenesis and is associated with tumor differentiation and prognosis. It also may be a potential target for PDAC molecular therapeutics. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 21 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 21 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 4 | 19% |
| Researcher | 4 | 19% |
| Other | 2 | 10% |
| Student > Doctoral Student | 2 | 10% |
| Student > Bachelor | 2 | 10% |
| Other | 5 | 24% |
| Unknown | 2 | 10% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 13 | 62% |
| Unspecified | 1 | 5% |
| Agricultural and Biological Sciences | 1 | 5% |
| Nursing and Health Professions | 1 | 5% |
| Immunology and Microbiology | 1 | 5% |
| Other | 1 | 5% |
| Unknown | 3 | 14% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 23 April 2016.
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#20,322,106
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Outputs from Tumor Biology
#1,835
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#219,191
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Outputs of similar age from Tumor Biology
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