作者: Patricia A Maroney , Sangpen Chamnongpol , Frédéric Souret , Timothy W Nilsen
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摘要: This protocol describes a method for direct labeling and detection of small RNAs present in total RNA by splinted ligation. The assay uses RNA-specific bridge oligonucleotide to form base pairs with the 5′-end-radiolabeled ligation oligonucleotide. captured is directly labeled Detection performed denaturing gel electrophoresis autoradiography or phosphorimaging. has been successfully used study expression various classes biological from nanogram microgram amounts without an amplification step. It significantly simpler perform more sensitive than either northern blotting ribonuclease protection assays. Once oligonucleotides have synthesized extracted, procedure can be completed 6 h.