Chromosomal instability in development and disease: Beyond cancer evolution.

Area of Science:

• Genetics and Molecular Biology
• Developmental Biology
• Cancer Research

Background:

• Chromosomal instability (CIN), characterized by increased chromosome structural and numerical changes, is a hallmark of cancer evolution.
• Emerging research highlights CIN's broader roles beyond genomic heterogeneity, influencing tumor progression and human development.

Purpose of the Study:

• To review recent advances in understanding the multifaceted impact of CIN on human biology and disease.
• To explore CIN's roles in cancer, early development, and rare genetic disorders.

Main Methods:

• Review of recent scientific literature and research findings.
• Focus on studies utilizing model systems and organisms to investigate CIN.

Main Results:

• CIN contributes to tumor growth, metastasis, and malignancy through mechanisms beyond copy number alterations.
• Aneuploid cells arising from CIN during early development are typically eliminated to ensure healthy fetal development.
• CIN is linked to mosaic variegated aneuploidy, a syndrome affecting brain development and increasing tumor risk.

Conclusions:

• CIN has diverse and significant impacts on human health, extending beyond its classical role in cancer genome evolution.
• Model systems are crucial for elucidating the complex mechanisms underlying CIN's influence on human disease and development.