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Updated: Nov 11, 2025
An Automated Method to Perform The In Vitro Micronucleus Assay using Multispectral Imaging Flow Cytometry
Published on: May 13, 2019
Purification of micronuclei from cultured cells by flow cytometry
Eléonore Toufektchan1, John Maciejowski1
1Molecular Biology Program, Sloan Kettering Institute, New York, NY 10065, USA.
Abstract:
Micronuclei are aberrant nuclear compartments that form when chromosomes or chromosome fragments fail to incorporate into a primary nucleus during mitotic exit. Ruptures at the micronuclear envelope are associated with DNA damage and activation of immune sensing pathways. To gain insights into these processes, we have developed a method to purify ruptured micronuclei. This method paves the way toward understanding the consequences of micronuclear envelope rupture. For complete details on the use and execution of this protocol, please refer to Mohr et al. (2021).
Insights
Researchers developed a new method to purify ruptured micronuclei, which are nuclear compartments linked to DNA damage. This technique aids in studying the effects of micronuclear envelope rupture and its role in cellular processes.
Area of Science:
- Cell Biology
- Genetics
- Molecular Biology
Background:
- Micronuclei are abnormal nuclear structures formed during cell division.
- Rupture of the micronuclear envelope is linked to DNA damage and immune responses.
Purpose of the Study:
- To develop a method for purifying ruptured micronuclei.
- To facilitate the study of consequences of micronuclear envelope rupture.
Main Methods:
- Development of a novel protocol for isolating ruptured micronuclei.
- Purification of micronuclear components for further analysis.
Main Results:
- Successful isolation of ruptured micronuclei.
- Establishment of a method to investigate DNA damage and immune signaling.
Conclusions:
- The developed method enables deeper understanding of micronuclear envelope rupture.
- This research opens new avenues for studying genomic instability and innate immunity.
