US 2015/0232918 A1 · Analyzing Messenger RNA and Micro RNA in the Same Reaction Mixture

Abstract

The present teachings provide methods, compositions, and kits for performing primer extension reactions on at least two target polynucleotides in the same reaction mixture. In some embodiments, a reverse transcription reaction is performed on a first target polynucleotide with a hot start primer comprising a self-complementary stem and a loop, and extension products form at high temperatures but extension products form less so at low temperatures since the self-complementary stem of the hot start primer prevents hybridization of the target specific region to the target. However, non-hot start primers with free target specific regions can hybridize to their corresponding targets at the low temperature and extension can happen at the low temperature.

Claims15

Dependent claims

A method of forming a messenger RNA (mRNA) primer extension product and a micro RNA primer extension product in the same reaction mixture comprising;

forming a reverse transcription reaction mixture comprising. a hot start mRNA primer, a micro RNA primer, a target mRNA, a target micro RNA, and a reverse transcribing enzyme, wherein the hot start mRNA primer comprises a blunt-ended self-complementary stem, and a loop, wherein the blunt-ended self-complementary stem comprises a target specific region and a quencher region;
hybridizing the micro RNA primer to the target micro RNA at a low temperature;
extending the micro RNA primer at the low temperature to form a micro RNA extension product, wherein the self-complementary stem of the hot start mRNA primer is non-denatured;
raising the temperature to a high temperature, wherein the self-complementary stem of the hot start mRNA primer is denatured;
hybridizing the target specific region of the hot start mRNA primer to the target mRNA at the high temperature;
extending the hot start mRNA primer to form a mRNA extension product;
and, forming the mRNA primer extension product and the micro RNA primer extension product in the same reaction mixture.

4 more elements

Dependencies are inferred from the claim text.

Analyzing Messenger RNA and Micro RNA in the Same Reaction Mixture

Life of this patent

Analyzing Messenger RNA and Micro RNA in the Same Reaction Mixture

Life of this patent

Abstract

Claims15