» Articles » PMID: 39661503

Protocol for Cellular RNA G-quadruplex Profiling Using G4RP.v2

Overview
Journal STAR Protoc
Publisher Cell Press
Date 2024 Dec 11
PMID 39661503
Authors
Affiliations
Soon will be listed here.
Abstract

The isolation of G-quadruplexes (G4s) from human cells using specific molecular tools constitutes an invaluable step forward in uncovering the biology of these higher-order DNA and RNA structures. Here, we present an improved version of the G4-RNA precipitation (G4RP) protocol developed to identify RNA G4s from human cancer cells. We describe steps for cell treatment and lysis, chemoprecipitation of G4s using TASQ tools, go/no-go steps, and quantitative reverse-transcription PCR (RT-qPCR) quantification and analysis. For complete details on the use and execution of this protocol, please refer to Mitteaux et al..

References
1.
Rota Sperti F, Dupouy B, Mitteaux J, Pipier A, Pirrotta M, Cheron N . Click-Chemistry-Based Biomimetic Ligands Efficiently Capture G-Quadruplexes and Help Localize Them at DNA Damage Sites in Human Cells. JACS Au. 2022; 2(7):1588-1595. PMC: 9327089. DOI: 10.1021/jacsau.2c00082. View

2.
Dumas L, Herviou P, Dassi E, Cammas A, Millevoi S . G-Quadruplexes in RNA Biology: Recent Advances and Future Directions. Trends Biochem Sci. 2020; 46(4):270-283. DOI: 10.1016/j.tibs.2020.11.001. View

3.
Monchaud D . Template-Assembled Synthetic G-Quartets (TASQs): multiTASQing Molecular Tools for Investigating DNA and RNA G-Quadruplex Biology. Acc Chem Res. 2023; 56(3):350-362. DOI: 10.1021/acs.accounts.2c00757. View

4.
Rota Sperti F, Mitteaux J, Zell J, Pipier A, Valverde I, Monchaud D . The multivalent G-quadruplex (G4)-ligands MultiTASQs allow for versatile click chemistry-based investigations. RSC Chem Biol. 2023; 4(7):456-465. PMC: 10320843. DOI: 10.1039/d3cb00009e. View

5.
Chambers V, Marsico G, Boutell J, Di Antonio M, Smith G, Balasubramanian S . High-throughput sequencing of DNA G-quadruplex structures in the human genome. Nat Biotechnol. 2015; 33(8):877-81. DOI: 10.1038/nbt.3295. View