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Updated: Jul 17, 2025
05:37
Single-Molecule Fluorescence Visualization of DNA Polymerase Dynamics at G-Quadruplexes
Published on: April 4, 2025
745
Detection of G-Quadruplex DNA Structures in Macrophages
Melanie Kastl1, Fabian Hersperger2, Katrin Kierdorf3,4,5
1Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany.
Methods in Molecular Biology (Clifton, N.J.)
|August 28, 2023
Summary
This study introduces a method to detect guanine-quadruplex (G4) structures in the nucleus of immune cells like macrophages. This protocol is applicable across species and aids in understanding G4 roles in immunity.
Area of Science:
- Molecular Biology
- Genomics
- Immunology
Background:
- DNA exists beyond the canonical B-DNA form, including stable G-quadruplex (G4) structures.
- G4s form in guanine-rich regions of DNA and RNA, are dynamically regulated, and implicated in cancer.
- While G4s are found in many organisms and cell types, their function in immune cells remains largely unexplored.
Purpose of the Study:
- To establish a detailed protocol for detecting G-quadruplex formation in the nucleus of macrophages.
- To enable G4 detection in both vertebrate and invertebrate immune cells using microscopic imaging.
Main Methods:
- Microscopic imaging techniques are employed.
- The protocol is designed for nuclear G4 detection in macrophages.
- Applicability is demonstrated across vertebrate and invertebrate species.
Main Results:
- A reliable protocol for visualizing nuclear G4 structures in macrophages has been developed.
- The method allows for G4 detection in diverse immune cell types.
Conclusions:
- This protocol facilitates the investigation of G4 structures in immune cells, particularly macrophages.
- Understanding G4s in immunity may reveal new therapeutic targets, especially in the context of cancer immunotherapy.
