Isolation and Characterization of Endogenous RNPs from Brain Tissues.

Isolation and Characterization of Endogenous RNPs from Brain Tissues.
Methods Mol Biol. 2018;1649:419-426
Authors: Schieweck R, Ang FY, Fritzsche R, Kiebler MA
Abstract
Identification of physiological target RNAs and protein interactors bound to RNA-binding proteins is a key prerequisite to understand the underlying mechanisms of posttranscriptional expression control and RNA granule assembly. Here, we describe a multistep biochemical approach to isolate endogenous ribonucleoprotein particles from brain tissues by exploiting differential centrifugation and gradient fractionation followed by immunoprecipitation with monospecific, affinity-purified antibodies directed against selected RNA-binding proteins. This protocol results in highly enriched endogenous ribonucleoprotein particles that then can be analyzed by mass spectrometry (for proteins composition) and microarray or RNA sequencing technologies (for target mRNAs).
PMID: 29130214 [PubMed - in process]

Source: Mol Biol Cell - November 14, 2017 Category: Molecular Biology Authors: Schieweck R, Ang FY, Fritzsche R, Kiebler MA Tags: Methods Mol Biol Source Type: research