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Related Concept Videos

Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

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Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
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Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
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Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
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Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
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Related Experiment Video

Updated: Jun 28, 2025

Comparative Lesions Analysis Through a Targeted Sequencing Approach
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Genomic linkages dictate cancer evolution.

Yifat Bar Or Snarski1, Ofer Shoshani1

  • 1Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel.

Cell Reports
|April 21, 2024
PubMed
Summary

Aneuploidy, a state of chromosome imbalance, complicates cancer genomes. This study reveals unique genome network interactions shaping the aneuploid genome in triple-negative breast cancer.

Area of Science:

  • Genomics
  • Cancer Biology
  • Molecular Oncology

Background:

  • Aneuploidy, characterized by chromosome number imbalance, is a hallmark of cancer, leading to genomic complexity.
  • Triple-negative breast cancer (TNBC) frequently exhibits aneuploidy, contributing to its aggressive nature and treatment resistance.

Purpose of the Study:

  • To investigate the specific genome network interactions that shape the aneuploid genome in triple-negative breast cancer.
  • To elucidate the mechanisms by which chromosome imbalance influences genomic alterations in TNBC.

Main Methods:

  • Utilized advanced genomic profiling techniques to analyze DNA from TNBC samples.
  • Employed network analysis to identify interactions between genomic regions in aneuploid cells.
  • Integrated multi-omics data to understand the functional consequences of aneuploidy.

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Main Results:

  • Identified novel network interactions specific to the aneuploid state in TNBC.
  • Demonstrated that these interactions contribute to the heterogeneity and instability of the TNBC genome.
  • Highlighted specific pathways and regulatory elements influenced by chromosome imbalance.

Conclusions:

  • The aneuploid genome in TNBC is actively shaped by unique genome network interactions.
  • Understanding these interactions provides insights into TNBC pathogenesis and potential therapeutic targets.
  • Targeting genome network vulnerabilities may offer new strategies for treating triple-negative breast cancer.