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Related Concept Videos

Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

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.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

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.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Tumor Progression02:07

Tumor Progression

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.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Tumor Progression02:07

Tumor Progression

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.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

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...
Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

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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Transmitochondrial Cybrid Generation Using Cancer Cell Lines
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Transmitochondrial Cybrid Generation Using Cancer Cell Lines

Published on: March 17, 2023

Cell fusion in tumor development: accelerated genetic evolution.

Ty Harkness1, Beth A Weaver, Caroline M Alexander

  • 1Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA.

Critical Reviews in Oncogenesis
|December 15, 2012
PubMed
Summary

Cell fusion offers a novel explanation for tumor karyotype abnormalities, suggesting that chromosome re-assortment during cell division may drive cancer progression. This research explores cell fusion as a potential tumor driver, particularly during metastasis.

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Cell-cell Fusion of Genome Edited Cell Lines for Perturbation of Cellular Structure and Function
07:30

Cell-cell Fusion of Genome Edited Cell Lines for Perturbation of Cellular Structure and Function

Published on: December 7, 2019

Area of Science:

  • Cancer Genetics
  • Cell Biology
  • Molecular Oncology

Background:

  • Human tumor cells frequently exhibit aberrant karyotypes, often attributed to errors in cell division, DNA repair deficiencies, or telomere instability.
  • The role of cell fusion in generating chromosomal abnormalities in cancer has been historically challenging to investigate.
  • Hyperdiploid cells, indicative of extra chromosomes, have long been observed in cancer genetics.

Purpose of the Study:

  • To explore cell fusion as an alternative mechanism contributing to the aberrant karyotypes observed in human tumors.
  • To investigate the potential for cell fusion in normal development and identify likely fusion partners for primary tumor cells.
  • To examine the specific role of stromal cell fusion in the metastatic process and its contribution to tumor evolution.

Main Methods:

  • Reviewing existing literature on cell fusion during normal development and in cancer.
  • Analyzing the genetic and cytoplasmic diversity of potential heterotypic (non-identical) fusion partners.
  • Discussing emerging tools and methodologies for evaluating cell fusion as a driver of tumor progression.

Main Results:

  • Cell fusion can lead to chromosome re-assortment during post-fusion mitosis, potentially explaining karyotype aberrations.
  • Stromal cells are identified as plausible fusion partners for primary tumor cells, especially during metastatic mobilization.
  • Evidence suggests significant genetic and cytoplasmic diversity exists within heterotypic fusion partners.

Conclusions:

  • Cell fusion presents a viable, yet under-explored, mechanism contributing to the genomic instability and evolution of human cancers.
  • Understanding cell fusion dynamics, particularly with stromal partners, is crucial for comprehending tumor progression and metastasis.
  • New tools are becoming available to rigorously assess the impact of cell fusion as a driver of cancer development.