Circulating microRNAs as specific biomarkers for breast cancer detection.

<h4>Background</h4>We previously showed microRNAs (miRNAs) in plasma are potential biomarkers for colorectal cancer detection. Here, we aimed to develop specific blood-based miRNA assay for breast cancer detection.<h4>Methodology/principal findings</h4>TaqMan-based miRNA prof...

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Autores principales: Enders K O Ng, Rufina Li, Vivian Y Shin, Hong Chuan Jin, Candy P H Leung, Edmond S K Ma, Roberta Pang, Daniel Chua, Kent-Man Chu, W L Law, Simon Y K Law, Ronnie T P Poon, Ava Kwong
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Publicado: Public Library of Science (PLoS) 2013
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spelling oai:doaj.org-article:3c87d7ece03e488f909bf810f0b4c7982021-11-18T08:02:46ZCirculating microRNAs as specific biomarkers for breast cancer detection.1932-620310.1371/journal.pone.0053141https://doaj.org/article/3c87d7ece03e488f909bf810f0b4c7982013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23301032/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>We previously showed microRNAs (miRNAs) in plasma are potential biomarkers for colorectal cancer detection. Here, we aimed to develop specific blood-based miRNA assay for breast cancer detection.<h4>Methodology/principal findings</h4>TaqMan-based miRNA profiling was performed in tumor, adjacent non-tumor, corresponding plasma from breast cancer patients, and plasma from matched healthy controls. All putative markers identified were verified in a training set of breast cancer patients. Selected markers were validated in a case-control cohort of 170 breast cancer patients, 100 controls, and 95 other types of cancers and then blindly validated in an independent set of 70 breast cancer patients and 50 healthy controls. Profiling results showed 8 miRNAs were concordantly up-regulated and 1 miRNA was concordantly down-regulated in both plasma and tumor tissue of breast cancer patients. Of the 8 up-regulated miRNAs, only 3 were significantly elevated (p<0.0001) before surgery and reduced after surgery in the training set. Results from the validation cohort showed that a combination of miR-145 and miR-451 was the best biomarker (p<0.0001) in discriminating breast cancer from healthy controls and all other types of cancers. In the blind validation, these plasma markers yielded Receiver Operating Characteristic (ROC) curve area of 0.931. The positive predictive value was 88% and the negative predictive value was 92%. Altered levels of these miRNAs in plasma have been detected not only in advanced stages but also early stages of tumors. The positive predictive value for ductal carcinoma in situ (DCIS) cases was 96%.<h4>Conclusions</h4>These results suggested that these circulating miRNAs could be a potential specific biomarker for breast cancer screening.Enders K O NgEnders K O NgRufina LiVivian Y ShinHong Chuan JinCandy P H LeungEdmond S K MaRoberta PangDaniel ChuaKent-Man ChuW L LawSimon Y K LawRonnie T P PoonAva KwongPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 1, p e53141 (2013)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Enders K O Ng
Enders K O Ng
Rufina Li
Vivian Y Shin
Hong Chuan Jin
Candy P H Leung
Edmond S K Ma
Roberta Pang
Daniel Chua
Kent-Man Chu
W L Law
Simon Y K Law
Ronnie T P Poon
Ava Kwong
Circulating microRNAs as specific biomarkers for breast cancer detection.
description <h4>Background</h4>We previously showed microRNAs (miRNAs) in plasma are potential biomarkers for colorectal cancer detection. Here, we aimed to develop specific blood-based miRNA assay for breast cancer detection.<h4>Methodology/principal findings</h4>TaqMan-based miRNA profiling was performed in tumor, adjacent non-tumor, corresponding plasma from breast cancer patients, and plasma from matched healthy controls. All putative markers identified were verified in a training set of breast cancer patients. Selected markers were validated in a case-control cohort of 170 breast cancer patients, 100 controls, and 95 other types of cancers and then blindly validated in an independent set of 70 breast cancer patients and 50 healthy controls. Profiling results showed 8 miRNAs were concordantly up-regulated and 1 miRNA was concordantly down-regulated in both plasma and tumor tissue of breast cancer patients. Of the 8 up-regulated miRNAs, only 3 were significantly elevated (p<0.0001) before surgery and reduced after surgery in the training set. Results from the validation cohort showed that a combination of miR-145 and miR-451 was the best biomarker (p<0.0001) in discriminating breast cancer from healthy controls and all other types of cancers. In the blind validation, these plasma markers yielded Receiver Operating Characteristic (ROC) curve area of 0.931. The positive predictive value was 88% and the negative predictive value was 92%. Altered levels of these miRNAs in plasma have been detected not only in advanced stages but also early stages of tumors. The positive predictive value for ductal carcinoma in situ (DCIS) cases was 96%.<h4>Conclusions</h4>These results suggested that these circulating miRNAs could be a potential specific biomarker for breast cancer screening.
format article
author Enders K O Ng
Enders K O Ng
Rufina Li
Vivian Y Shin
Hong Chuan Jin
Candy P H Leung
Edmond S K Ma
Roberta Pang
Daniel Chua
Kent-Man Chu
W L Law
Simon Y K Law
Ronnie T P Poon
Ava Kwong
author_facet Enders K O Ng
Enders K O Ng
Rufina Li
Vivian Y Shin
Hong Chuan Jin
Candy P H Leung
Edmond S K Ma
Roberta Pang
Daniel Chua
Kent-Man Chu
W L Law
Simon Y K Law
Ronnie T P Poon
Ava Kwong
author_sort Enders K O Ng
title Circulating microRNAs as specific biomarkers for breast cancer detection.
title_short Circulating microRNAs as specific biomarkers for breast cancer detection.
title_full Circulating microRNAs as specific biomarkers for breast cancer detection.
title_fullStr Circulating microRNAs as specific biomarkers for breast cancer detection.
title_full_unstemmed Circulating microRNAs as specific biomarkers for breast cancer detection.
title_sort circulating micrornas as specific biomarkers for breast cancer detection.
publisher Public Library of Science (PLoS)
publishDate 2013
url https://doaj.org/article/3c87d7ece03e488f909bf810f0b4c798
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