miRNA Expression Profiling -
Overview


Total RNA or low molecular weight-enriched RNA is converted into cDNA using a single "megaplex" reverse transcriptase reaction. The megaplex reaction contains a specific stem-loop primer for each of the mature target microRNA's (Each stem-loop primer is designed to hybridize to only the fully mature microRNA, and not to precursor forms of its target.). The cDNA is subjected to a "pre-amplification" PCR. The diluted pre-amplification products serve as substrates for TaqMan® quantitative PCR reactions. The assays that comprise this process are manufactured by Applied Biosystems.

TLDA cards - A profiling service is available on each of the following TaqMan Low Density Array (TLDA) cards:


TLDA card
# of microRNA's
assayed by card
# of endogenous controls
assayed by card
Human miRNA ver 2.0 card A 3733
Human miRNA ver 2.0 card B 2856
Rodent miRNA ver 2.0 card A 3755
Rodent miRNA ver 2.0 card B 2086
Rodent miRNA ver 1.0 3554

For the version 2 cards, a sample may be submitted for processing on either the A card, or the B card, or both the A and B cards.

Note: In the past, the rodent panel was listed as ver 2.0, but we have changed the name to 1.0 to avoid confusion with ABI's newest rodent card, which is also called 2.0

For support purposes, here are the layouts of the obsolete human open-plate miRNA panel and Human miRNA ver 1.0 panel with assay names updated to Sanger 11.0

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