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Related Concept Videos

Mutagenicity and Carcinogenicity01:25

Mutagenicity and Carcinogenicity

Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
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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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Adaptive Mechanisms in Cancer Cells02:53

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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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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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Cancer-Critical Genes I: Proto-oncogenes01:33

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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.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
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Cancer-Critical Genes I: Proto-oncogenes01:33

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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.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
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Chemical-Induced Skin Carcinogenesis Model Using Dimethylbenz[a]Anthracene and 12-O-Tetradecanoyl Phorbol-13-Acetate (DMBA-TPA)
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Published on: December 19, 2019

Optimization aspects of carcinogenesis.

B Brutovsky1, D Horvath

  • 1Department of Biophysics, P.J. Safarik University, Jesenna 5, Kosice, Slovakia. bru@upjs.sk

Medical Hypotheses
|November 13, 2009
PubMed
Summary
This summary is machine-generated.

Carcinogenesis, the process of cancer development, is an evolutionary optimization process. Understanding this evolutionary basis can explain why some cancer therapies may paradoxically lead to more aggressive tumor growth.

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Area of Science:

  • Evolutionary biology
  • Cancer research
  • Mathematical modeling

Background:

  • Carcinogenesis involves the replication of mutated genomes based on their fitness.
  • This process aligns with the principles of evolutionary optimization.

Purpose of the Study:

  • To frame carcinogenesis as an evolutionary optimization process.
  • To explore the implications of this framework for understanding cancer therapies.

Main Methods:

  • Applying the mathematical framework of evolutionary optimization to carcinogenesis.
  • Analyzing the role of "trial allocation" and population statistics in cancer progression.

Main Results:

  • Carcinogenesis can be mathematically described as an evolutionary optimization process.
  • Features inhibiting evolutionary optimization are considered "therapies" in this context.

Conclusions:

  • This evolutionary optimization view explains counterintuitive findings, such as increased malignancy in therapy-surviving cancer cells.
  • The allocation of trials and fitness estimations are crucial in understanding cancer progression and treatment response.