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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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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.
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Purinergic system in cancer stem cells.

J D Nuñez-Rios1, H Ulrich2, M Díaz-Muñoz1

  • 1Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Boulevard Juriquilla #3001, Juriquilla Querétaro, Querétaro, CP 76230, México.

Purinergic Signalling
|November 15, 2023
PubMed
Summary

Cancer stem cells (CSCs) drive tumor growth and resistance. Targeting the purinergic system, which influences CSCs, offers a promising strategy for developing novel cancer therapies.

Keywords:
Cancer stem cellsEctonucleotidasesEpithelial to mesenchymal transitionPurinergic receptorsPurinergic signaling in cancer

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Area of Science:

  • Oncology
  • Cell Biology
  • Pharmacology

Background:

  • Cancer stem cells (CSCs) are crucial for tumor initiation, diversity, growth, drug resistance, and metastasis.
  • The origin of CSCs (from normal stem cells or dedifferentiated cancer cells) remains debated.
  • Understanding CSC physiology is vital for developing effective cancer therapeutics.

Purpose of the Study:

  • To review current knowledge on the role of the purinergic system in regulating CSCs.
  • To highlight the purinergic system's involvement in the tumor microenvironment.
  • To identify purinergic system components as potential therapeutic targets for cancer treatment.

Main Methods:

  • Literature review and synthesis of existing research findings.
  • Analysis of the purinergic system's role in CSC regulation.
  • Evaluation of pharmacological targeting strategies for purinergic signaling in cancer.

Main Results:

  • The purinergic system acts as a key autocrine-paracrine messenger in the tumor microenvironment.
  • Purinergic signaling influences CSC phenotype and behavior.
  • Specific elements of the purinergic system are implicated in CSC regulation.

Conclusions:

  • The purinergic system plays a significant role in regulating cancer stem cells.
  • Targeting the purinergic system presents a novel therapeutic avenue for cancer treatment.
  • Further research into purinergic signaling in CSCs can lead to innovative anti-cancer strategies.