期刊
PANCREAS
卷 40, 期 8, 页码 1180-1187出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MPA.0b013e318221b33e
关键词
pancreatic cancer; cancer stem cells; microRNA; microarray; cross-correlation analysis
Objective: The objective of this study was to analyze and identify pancreatic cancer stem cell-specific microRNAs (miRNAs) and messenger RNAs (mRNAs) to investigate their correlations to cancer stem cell biology. Methods: We used sphere cultivation methods to enrich the stem cell population and analyzed overall miRNA and mRNA expressions using microarray analysis. Results: Differentially expressed miRNAs including miR-99a, miR-100, miR-125b, miR-192, and miR-429 were detected in pancreatic cancer stem cells. Furthermore, examining both profiles, we obtained 210 miRNAs and 258 stem cell-associated mRNAs that were differentially expressed in the pancreatic cancer stem cells. These miRNAs and mRNAs were further investigated using cross-correlation analysis, which yielded 6 groups of miRNAs and 3 groups of mRNAs. The number of miRNA clusters and mRNA clusters showed high correlation based on microarray result. Conclusions: Differentially expressed miRNAs in pancreatic cancer stem cells provide insights into possible linkages between clusters of miRNAs and clusters of stem cell-associated mRNAs in cancer stem cells and have broad implications in our understanding of cancer stem cells and cancer stem cell-targeted cancer therapy.
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