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Published on: May 13, 2019
Cancer cell micronucleus: an update on clinical and diagnostic applications
1Department of Experimental Medicine & Biotechnology, PGIMER, Chandigarh, India. alkabhatia@ymail.com
Abstract:
Micronucleus (MN) is the small nucleus that forms whenever a chromosome or its fragment is not incorporated into one of the daughter nuclei during cell division. Any form of genotoxic stress due to extraneous or internal factors leads to formation of a MN, which serves as an indicator of chromosomal instability. Chromosomal damage and formation of MN are believed to play a significant role in the pathogenesis of many malignancies. Studies have shown that MN assay can be used as a tool for risk prediction, screening, diagnosis, prognosis and as a treatment-response indicator in cancers. With the advancements in technology, greater details are becoming available regarding the molecular events in carcinogenesis. The micronuclei (MNi) in the cancer cells are now being used as tools to understand the pathogenetics of the malignancies. However, despite large number of studies on MNi in lymphocytes or exfoliated cells of cancer patients, the data regarding a cancer cell MN remain scarce. This review article tries to unleash some of the mysteries related to the formation of MN inside the cancer cell. Also, it discusses the possible effects and the events post MN formation in the cancer cell.
Insights
Micronuclei (MN) indicate chromosomal instability and cancer development. This review explores MN formation within cancer cells, offering insights into malignancy pathogenesis and potential therapeutic applications.
Area of Science:
- Cell Biology
- Genetics
- Oncology
Background:
- Micronucleus (MN) formation arises from chromosome mis-segregation during cell division, indicating genotoxic stress and chromosomal instability.
- MN assays are established tools for cancer risk prediction, diagnosis, and treatment monitoring.
- While MN in lymphocytes are well-studied, data on MN within cancer cells remain limited.
Purpose of the Study:
- To review the formation of micronuclei (MN) specifically within cancer cells.
- To elucidate the role of MN in cancer cell pathogenesis.
- To discuss the molecular events and consequences following MN formation in malignancies.
Main Methods:
- Literature review focusing on micronuclei formation in cancer cells.
- Analysis of existing studies on chromosomal instability and carcinogenesis.
- Synthesis of data on the molecular mechanisms of MN formation and its impact.
Main Results:
- Genotoxic stress triggers MN formation, contributing to chromosomal instability and cancer progression.
- MN within cancer cells offer insights into the intricate molecular events of carcinogenesis.
- The study highlights the scarcity of research on cancer cell MN compared to other cell types.
Conclusions:
- Micronuclei formation within cancer cells is a critical area for understanding malignancy pathogenesis.
- Further research into cancer cell MN could reveal novel diagnostic and therapeutic strategies.
- MN in cancer cells represent a promising avenue for unraveling complex cancer biology.
