Integration of autophagy and anoikis resistance in solid tumors

Jie Yang1, Zhichao Zheng, Xiaojie Yan

  • 1Department of Biochemistry and Molecular Biology, Heping District, Tianjin, 300070, China.

Insights

Autophagy, a cellular recycling process, helps solid tumors resist anoikis, a form of apoptosis. This resistance aids cancer spread, but autophagy

Area of Science:

  • Cellular Biology
  • Oncology
  • Molecular Mechanisms

Background:

  • Autophagy (macroautophagy) is a lysosome-dependent degradation process crucial under stress.
  • Anoikis is apoptosis triggered by cell detachment from the extracellular matrix, vital for tissue homeostasis.
  • Anoikis resistance is a hallmark of solid tumors, promoting tumorigenesis and metastasis.

Purpose of the Study:

  • To review recent advancements in understanding anoikis resistance and autophagy signaling.
  • To highlight the dual role of autophagy (pro-survival vs. pro-death) in cancer.
  • To focus on the implications of autophagy in solid tumor metastasis for therapeutic strategies.

Main Methods:

  • Literature review of recent scientific publications.
  • Analysis of molecular mechanisms underlying autophagy and anoikis.
  • Synthesis of data on the role of autophagy in solid tumor progression and metastasis.

Main Results:

  • Autophagy confers anoikis resistance in solid tumors by enabling cytosolic component recycling.
  • Autophagy's role in cancer is context-dependent, acting as either a pro-survival or pro-death mechanism.
  • Understanding this complexity is key to exploiting autophagy for effective tumor therapy.

Conclusions:

  • Autophagy plays a significant role in anoikis resistance, facilitating solid tumor metastasis.
  • The context-specific functions of autophagy present therapeutic opportunities.
  • Further research into autophagy signaling is critical for developing novel anti-cancer treatments targeting metastasis.

Related Concept Videos

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 pro-apoptotic...
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,...
Cellular Injury V: Apoptosis and Autophagy01:22

Cellular Injury V: Apoptosis and Autophagy

Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...
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...
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,...