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Related Experiment Video

Updated: Apr 9, 2026

An Automated Method to Perform The In Vitro Micronucleus Assay using Multispectral Imaging Flow Cytometry

An Automated Method to Perform The In Vitro Micronucleus Assay using Multispectral Imaging Flow Cytometry

Published on: May 13, 2019

Linking Micronuclei to Chromosome Fragmentation.

Emily M Hatch¹, Martin W Hetzer¹

¹Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies 10010 North Torrey Pines Road, La Jolla, 92037 CA, USA.

|June 20, 2015

Summary

This summary is machine-generated.

Chromosomes that mis-segregate into micronuclei can lead to cancer-driving rearrangements. New live-cell imaging and single-cell sequencing reveal these micronucleated chromosomes undergo chromothripsis-like events in the next cell cycle.

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Last Updated: Apr 9, 2026

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Automation of the Micronucleus Assay Using Imaging Flow Cytometry and Artificial Intelligence

Automation of the Micronucleus Assay Using Imaging Flow Cytometry and Artificial Intelligence

Published on: January 27, 2023

Area of Science:

Genetics
Cell Biology
Cancer Research

Background:

Human cancer cells exhibit complex chromosome rearrangements, which are implicated in cancer development.
The precise molecular mechanisms driving these chromosomal abnormalities remain largely unknown.

Purpose of the Study:

To investigate the fate of mis-segregated chromosomes within micronuclei.
To elucidate the molecular mechanisms underlying chromosome rearrangements in cancer cells.

Main Methods:

Development and application of a novel technique combining live-cell imaging with single-cell sequencing.
Observation of chromosome behavior in micronuclei across cell cycles.

Main Results:

Chromosomes that mis-segregate into micronuclei are prone to undergoing extensive rearrangements.
These rearrangements resemble chromothripsis, a process of massive chromosomal fragmentation and rejoining.
The observed events occur in the subsequent cell cycle following micronucleation.

Conclusions:

Micronuclei serve as sites for chromothripsis-like chromosome shattering and rearrangement.
This mechanism provides a potential explanation for the origin of complex genomic alterations in human cancers.
Targeting micronuclei formation or stability could be a therapeutic strategy for cancer treatment.