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Related Experiment Video

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Rethinking carcinogenesis: The detached pericyte hypothesis.

Stuart G Baker1

  • 1Division of Cancer Prevention, National Cancer Institute, United States.

Medical Hypotheses
|August 8, 2020
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Summary

The detached pericyte hypothesis offers a new explanation for cancer development, moving beyond the somatic mutation theory. This theory suggests pericytes play a crucial role in cancer's initiation and spread.

Keywords:
CarcinogenesisFibrosisInflammationMesenchymal stem cellPericyteTumorigenesis

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Area of Science:

  • Oncology
  • Cell Biology
  • Carcinogenesis

Background:

  • Current cancer prevention is limited by incomplete understanding of cancer biology.
  • The dominant somatic mutation theory inadequately explains certain cancer phenomena.
  • Alternative theories, like the detached pericyte hypothesis, are needed.

Purpose of the Study:

  • To introduce and provide evidence for the detached pericyte hypothesis as an alternative to the somatic mutation theory.
  • To explain previously puzzling aspects of carcinogenesis.
  • To propose new avenues for cancer prevention strategies.

Main Methods:

  • Review and synthesis of existing experimental results supporting the detached pericyte hypothesis.
  • Identification of phenomena not explained by the somatic mutation theory.
  • Formulation of testable predictions based on the hypothesis.

Main Results:

  • The detached pericyte hypothesis explains phenomena such as foreign-body tumorigenesis and non-genotoxic carcinogenesis.
  • Experimental data supports the hypothesis, including a key role for pericytes in metastasis.
  • A prediction regarding pericytes in metastasis was experimentally confirmed.

Conclusions:

  • The detached pericyte hypothesis offers a compelling alternative framework for understanding cancer biology.
  • Pericytes are implicated in both cancer initiation and metastasis.
  • This hypothesis could revolutionize cancer prevention strategies.