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. 2005 Nov 27;33(20):e179. doi: 10.1093/nar/gni178

Table 2.

Discrimination between mature miRNAs and their pri- or pre-miRNA precursors

ID Synthetic miRNA (No. of copies) Synthetic precursor (No. of copies) Total RNA (ng) CT miRNA Precursor
miR-26b 1.5 × 108 0 0 16.5 ND
0 1.5 × 108 0 27.4 18.7
0 0 7.5 21.9 28.7
0 0 0 ND ND
let-7a 1.5 × 108 0 0 16.5 ND
0 1.5 × 108 0 29.5 19.4
0 0 7.5 19.9 34.7
0 0 0 ND ND
miR-30a-3p 1.5 × 108 0 0 15.8 ND
0 1.5 × 108 0 24.2 17.2
0 0 7.5 25.4 30.3
0 0 0 ND ND
miR-30a-5p 1.5 × 108 0 0 16.3 ND
0 1.5 × 108 0 29.1 18.9
0 0 7.5 22.1 30.3
0 0 0 39.6 ND

Note: ND represents no detectable PCR products after 40 cycles. The copy number of synthetic miRNAs in RT was estimated based on the A260 values. Only 9% of RT product was added to PCR. Total RNA from human lung was used. Pre-miRNA precursors, pri-let-7a-3 and pri-miR-26b, and pre-miRNA precursor pre-miR-30a were examined.