Refined blood-borne miRNome of human diseases via PCA-based feature extraction

概要

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Disease biomarker using blood is clinically important, since blood is easy to obtain from patients, thus it requires relatively less stress. However, blood generally reflects not only targeted diseases but also whole body status of patients. Thus, it is important which contents of blood are considered. Recently, miRNAs in blood, blood-borne miRNome, turns out to be promising candidates for blood based biomarker for diseases. In this paper, we propose a new method based upon principal component analysis to identify better candidates for miRNAs as blood based biomarker using miRNA expression profiles of patients. Our method based upon principal components analysis provides us better blood-borne miRNome to discriminate diseases from healthy controls. They are hsa-miR-425,hsa-miR-15b,hsa-miR-185, hsa-miR-92a, hsa-miR-140-3p, hsamiR-320a, hsa-miR-486-5p, hsa-miR-16, hsa-miR-191, hsa-miR-106b, hsa-miR-19b, and hsa-miR-30d and are previously extensively reported to be cancer/disease related miRNAs. We have found that these common miRNAs are expressive or suppressive significantly in most of diseases/cancers, but in diseases/cancers specific combinatory manner. It enables us to discriminate cancers/diseases from healthy control well.
2012-03-21