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Cell Biosci. 2012 Nov 6;2(1):37. doi: 10.1186/2045-3701-2-37.

Strategies to identify long noncoding RNAs involved in gene regulation.

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Stem Cell Institute, Department of Genetics, Cell Biology and Development, University of Minnesota, Room 2-216, MTRF, 2001 6th St, SE, Minneapolis, MN, 55455, USA.


Long noncoding RNAs (lncRNAs) have been detected in nearly every cell type and found to be fundamentally involved in many biological processes. The characterization of lncRNAs has immense potential to advance our comprehensive understanding of cellular processes and gene regulation, along with implications for the treatment of human disease. The recent ENCODE (Encyclopedia of DNA Elements) study reported 9,640 lncRNA loci in the human genome, which corresponds to around half the number of protein-coding genes. Because of this sheer number and their functional diversity, it is crucial to identify a pool of potentially relevant lncRNAs early on in a given study. In this review, we evaluate the methods for isolating lncRNAs by immunoprecipitation and review the advantages, disadvantages, and applications of three widely used approaches - microarray, tiling array, and RNA-seq - for identifying lncRNAs involved in gene regulation. We also look at ways in which data from publicly available databases such as ENCODE can support the study of lncRNAs.

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