Dissecting the Role of Autophagy-Related Proteins in Cancer Metabolism and Plasticity

Liliana Torres-López1, Oxana Dobrovinskaya1

  • 1Laboratory of Immunology and Ionic Transport Regulation, Biomedical Research Centre, University of Colima, Av. 25 de Julio #965, Villas de San Sebastián, Colima 28045, Mexico.

Cells
|October 27, 2023
PubMed

Insights

Autophagy modulation impacts cancer cell metabolism, often enhancing the Warburg effect when inhibited. Targeting both autophagy and metabolic pathways offers a promising dual anticancer strategy.

Area of Science:

  • Oncology
  • Cell Biology
  • Metabolic Research

Background:

  • Autophagy modulation is a studied anticancer strategy.
  • Metabolic changes during autophagy modulation in cancer cells are under-explored.
  • Autophagy-related (ATGs) genes and proteins link to cancer progression and plasticity.

Purpose of the Study:

  • To review the association between autophagy-related genes and cancer cell metabolism.
  • To highlight metabolic shifts, such as the Warburg effect, upon autophagy inhibition or induction.
  • To critically evaluate dual pharmacological strategies targeting both autophagy and metabolic pathways.

Main Methods:

  • Comprehensive literature review of autophagy-related genes (ATGs).
  • Analysis of metabolic alterations in cancer cells with modulated autophagy.
  • Review of current pharmacological strategies for dual inhibition.

Main Results:

  • Deregulation of ATGs significantly affects cancer cell metabolism.
  • Inhibition of autophagy frequently enhances the Warburg effect in cancer cells.
  • Metabolic changes are cancer-type dependent and crucial for cancer cell survival post-autophagy modulation.

Conclusions:

  • Metabolic reprogramming is a key consequence of autophagy modulation in cancer.
  • Targeting cancer cell metabolism alongside autophagy presents a viable therapeutic approach.
  • Further research into dual inhibition strategies is warranted for effective cancer treatment.

Related Concept Videos

mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
3.8K
Autophagy01:27

Autophagy

Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
4.3K
Delivery Pathways to the Lysosome01:36

Delivery Pathways to the Lysosome

Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
6.6K
Autophagic Cell Death01:18

Autophagic Cell Death

Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
3.4K
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,...
5.8K
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
6.6K