title: Systematic comparison of microarray profiling, real-time PCR, and next-generation sequencing technologies for measuring differential microRNA expression.
abstract: RNA abundance and DNA copy number are routinely measured in high-throughput using microarray and next-generation sequencing (NGS) technologies, and the attributes of different platforms have been extensively analyzed. Recently, the application of both microarrays and NGS has expanded to include microRNAs (miRNAs), but the relative performance of these methods has not been rigorously characterized. We analyzed three biological samples across six miRNA microarray platforms and compared their hybridization performance. We examined the utility of these platforms, as well as NGS, for the detection of differentially expressed miRNAs. We then validated the results for 89 miRNAs by real-time RT-PCR and challenged the use of this assay as a "gold standard." Finally, we implemented a novel method to evaluate false-positive and false-negative rates for all methods in the absence of a reference method.
authors.affiliation: Cancer Research UK, Cambridge Research Institute, Li Ka Shing Centre, Cambridge CB2 0RE, United Kingdom. Anna.Git@cancer.org.uk
authors.forename: Anna
authors.initials: A
authors.lastname: Git
authors.forename: Heidi
authors.initials: H
authors.lastname: Dvinge
authors.forename: Mali
authors.initials: M
authors.lastname: Salmon-Divon
authors.forename: Michelle
authors.initials: M
authors.lastname: Osborne
authors.forename: Claudia
authors.initials: C
authors.lastname: Kutter
authors.forename: James
authors.initials: J
authors.lastname: Hadfield
authors.forename: Paul
authors.initials: P
authors.lastname: Bertone
authors.forename: Carlos
authors.initials: C
authors.lastname: Caldas
mesh_terms: D000465:Algorithms; D001483:Base Sequence; D001940:Breast / Q000378:metabolism; D001943:Breast Neoplasms / Q000235:genetics / Q000378:metabolism; D045744:Cell Line, Tumor; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D015870:Gene Expression; D020869:Gene Expression Profiling / Q000379:methods* / Q000706:statistics & numerical data; D006801:Humans; D035683:MicroRNAs / Q000235:genetics* / Q000378:metabolism*; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods* / Q000706:statistics & numerical data; D012334:RNA, Neoplasm / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000379:methods* / Q000706:statistics & numerical data; D017423:Sequence Analysis, RNA / Q000379:methods* / Q000706:statistics & numerical data
chemical_list: D035683:MicroRNAs; D012334:RNA, Neoplasm