Immunofluorescent microscopy to quantify and characterize chromosomal instability (CIN).

Area of Science:

• Cell Biology
• Genetics
• Cancer Research

Background:

• Chromosomal instability (CIN) involves continuous chromosome missegregation, leading to aneuploidy and is prevalent in most cancers.
• CIN arises from intrinsic factors like mitotic checkpoint dysfunction and extrinsic factors such as radiation, influencing tumor progression.
• Micronuclei formation due to CIN can activate immune responses via the cGAS-STING pathway.

Purpose of the Study:

• To present a straightforward method for quantifying and characterizing chromosomal instability (CIN) and micronuclei.
• To provide a technique applicable to human and murine cell lines and tissues for CIN analysis.

Main Methods:

• Immunofluorescent microscopy was employed to visualize and quantify CIN and micronuclei.
• The method focuses on simple, implementable techniques for cellular and tissue analysis.

Main Results:

• The study details a method for quantifying chromosomal missegregation events and micronuclei formation.
• The described technique is adaptable for various cell types and tissues.

Conclusions:

• The developed method offers a simple approach to study CIN and micronuclei.
• This technique can support research into the role of CIN in cancer and immune responses, potentially informing therapeutic strategies.