Figure 4. Analysis of decay kinetics for select basal mRNAs during 2–5AMD.
(A) Design of qPCR for detection of full-length mRNAs. (B) Decay of select highly expressed housekeeping mRNAs upon poly I:C treatment of A549 cells measured by qPCR. The decay of SON and PKRDC shows distinctly biphasic character indicating the presence of non-cleaved mRNA fraction (2–5AMD-resistant pool) in the cells. The inset graphs show log-linear parts of the decay profiles used to measure the first-order decay kinetic parameters. Dotted lines mark approximate levels of 2–5AMD-resistant mRNA fractions. Data are aggregates from three biological replicates. (C) Decay half-life (T1/2) obtained for each mRNA from the qPCR in (B). The last line shows T1/2 for 5,000 mRNAs calculated based on RNA-seq (Fig S4B, Table S3). (*) Excluding GAPDH due to its stability.
