Related Experiment Video
Updated: Feb 8, 2026

Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome
Published on: June 15, 2016
In Vitro System for Coupling RNAP II Transcription to Primary microRNA Processing and a Three-Way System for RNAP II
Shanye Yin1, Alexander Iocolano1, Yong Yu1
1Department of Cell Biology, Harvard Medical School, Boston, MA, USA.
Abstract:
In the genome, primary microRNAs (pri-miRNAs) are encoded either as independent transcriptional units with their own promoters (intergenic miRNAs) or within the introns of other genes (intronic miRNAs). Here, we report two methods, one that we established for coupled RNAP II transcription and pri-miRNA processing and the other that is a three-way system for RNAP II transcription, pri-miRNA processing, and pre-mRNA splicing. In these systems, CMV-DNA constructs encoding the processing substrates are incubated in HeLa cell nuclear extracts in the presence of 32P-UTP to generate the nascent RNAP II transcripts, which are processed efficiently by the endogenous RNA processing machineries in nuclear extracts.
Related Concept Videos
MicroRNAs
MicroRNAs
Transcription
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription Factors
Master Transcription Regulators
Chromatin Structure Regulates pre-mRNA Processing
The chromatin structure, especially...

