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The role of autophagy in cancer development and response to therapy

Yasuko Kondo1, Takao Kanzawa, Raymond Sawaya

  • 1Department of Neurosurgery, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA.

Nature Reviews. Cancer
|September 9, 2005
PubMed

Insights

Autophagy, a cellular degradation process, plays a complex role in cancer. Understanding its dual function is key to developing new cancer therapies.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Oncology

Background:

  • Autophagy is a fundamental cellular process involving the degradation of proteins and organelles.
  • It serves as a crucial response to cellular stress, including starvation.
  • The precise role of autophagy in cancer development and treatment remains incompletely understood.

Purpose of the Study:

  • To review the current knowledge on autophagy's role in cancer initiation and progression.
  • To examine the impact of autophagy on cancer cell survival under various conditions.
  • To explore the potential of manipulating autophagy for improved cancer therapy.

Main Methods:

  • Literature review of existing studies on autophagy and cancer.
  • Analysis of experimental evidence regarding autophagy's function in tumorigenesis.
  • Evaluation of therapeutic strategies targeting autophagy in preclinical and clinical settings.

Main Results:

  • Autophagy can act as a tumor suppressor by removing damaged components.
  • Conversely, it can promote cancer cell survival and resistance to therapy under stress.
  • Its role is context-dependent, varying with cancer type and stage.

Conclusions:

  • Autophagy exhibits a context-specific, dual role in cancer, acting as both a suppressor and a facilitator.
  • Targeting autophagy presents a promising, yet complex, strategy for enhancing anticancer treatments.
  • Further research is needed to precisely delineate autophagy's functions and optimize therapeutic interventions.

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