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A Complete Pipeline for Isolating and Sequencing MicroRNAs, and Analyzing Them Using Open Source Tools
Published on: August 21, 2019
MicroRNA biogenesis: isolation and characterization of the microprocessor complex.
Richard I Gregory1, Thimmaiah P Chendrimada, Ramin Shiekhattar
1Gene Expression and Regulation Program, and Molecular and Cellular Oncogenesis Program, The Wistar Institute, Philadelphia, PA, USA.
Methods in Molecular Biology (Clifton, N.J.)
|September 8, 2006
Summary
Researchers identified the Microprocessor complex, essential for microRNA (miRNA) biogenesis. This complex, containing Drosha and DGCR8, processes primary miRNAs (pri-miRNAs) into precursor miRNAs (pre-miRNAs).
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- MicroRNAs (miRNAs) are small regulatory RNAs controlling gene expression.
- miRNA biogenesis involves sequential processing of primary miRNAs (pri-miRNAs) into mature miRNAs.
- The protein complexes involved in the initial nuclear processing step remain largely uncharacterized.
Purpose of the Study:
- To identify the protein complexes responsible for the nuclear processing of pri-miRNAs to precursor miRNAs (pre-miRNAs).
- To understand the initial steps of miRNA biogenesis and function.
Main Methods:
- Biochemical isolation and identification of protein complexes from human cells.
- Characterization of the Microprocessor complex, including its components Drosha and DGCR8.
- In vitro analysis of the pri-miRNA processing activity of the purified Microprocessor complex.
Main Results:
- Identification of the Microprocessor complex, comprising Drosha and DGCR8.
- Demonstration that the Microprocessor complex is necessary and sufficient for processing pri-miRNA to pre-miRNA.
- Establishment of a protocol for the biochemical isolation and in vitro analysis of the Microprocessor complex.
Conclusions:
- The Microprocessor complex is a key regulator of miRNA biogenesis.
- Drosha and DGCR8 are essential components of the Microprocessor complex.
- This study provides a foundation for further investigation into miRNA processing and function.
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