TY - JOUR
T1 - MicroRNA expression differentiates between primary lung tumors and metastases to the lung
AU - Barshack, Iris
AU - Lithwick-Yanai, Gila
AU - Afek, Arnon
AU - Rosenblatt, Kinneret
AU - Tabibian-Keissar, Hila
AU - Zepeniuk, Merav
AU - Cohen, Lahav
AU - Dan, Harel
AU - Zion, Orit
AU - Strenov, Yulia
AU - Polak-Charcon, Sylvie
AU - Perelman, Marina
PY - 2010/8
Y1 - 2010/8
N2 - For surgical pathologists, distinguishing whether a pulmonary neoplasm is primary or metastatic can be challenging, and current biomarkers do not always aid lung tumor classification. The tissue-associated expression of microRNA likely explains the remarkable finding that many tumors can be classified based solely on their microRNA expression signature. Here we show that microRNAs can serve as biomarkers for lung tumor classification. Using microRNA microarray data generated from 76 formalin-fixed, paraffin-embedded (FFPE) samples of either primary lung cancer or metastatic tumors to the lung, we have identified a set of microRNAs expressed differentially between these two groups. This set includes hsa-miR-182, which was most strongly over-expressed in the lung primary tumors, and hsa-miR-126, which was over-expressed in the metastatic tumors. The differential expression of this set of microRNAs was confirmed using qRT-PCR on a set of 54 samples. In light of our data, microRNA expression should be considered as a potential clinical biomarker for surgical pathologists faced with discerning the tumor type of an inscrutable lung neoplasm.
AB - For surgical pathologists, distinguishing whether a pulmonary neoplasm is primary or metastatic can be challenging, and current biomarkers do not always aid lung tumor classification. The tissue-associated expression of microRNA likely explains the remarkable finding that many tumors can be classified based solely on their microRNA expression signature. Here we show that microRNAs can serve as biomarkers for lung tumor classification. Using microRNA microarray data generated from 76 formalin-fixed, paraffin-embedded (FFPE) samples of either primary lung cancer or metastatic tumors to the lung, we have identified a set of microRNAs expressed differentially between these two groups. This set includes hsa-miR-182, which was most strongly over-expressed in the lung primary tumors, and hsa-miR-126, which was over-expressed in the metastatic tumors. The differential expression of this set of microRNAs was confirmed using qRT-PCR on a set of 54 samples. In light of our data, microRNA expression should be considered as a potential clinical biomarker for surgical pathologists faced with discerning the tumor type of an inscrutable lung neoplasm.
KW - Hsa-miR-126
KW - Hsa-miR-182
KW - Lung cancer
KW - MicroRNA
UR - http://www.scopus.com/inward/record.url?scp=77954316346&partnerID=8YFLogxK
U2 - 10.1016/j.prp.2010.03.005
DO - 10.1016/j.prp.2010.03.005
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C2 - 20418022
AN - SCOPUS:77954316346
SN - 0344-0338
VL - 206
SP - 578
EP - 584
JO - Pathology Research and Practice
JF - Pathology Research and Practice
IS - 8
ER -