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The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
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Ceramide Signaling and p53 Pathways.

Kristen A Jeffries1, Natalia I Krupenko2

  • 1Nutrition Research Institute, UNC Chapel Hill, Kannapolis, NC, United States.

Advances in Cancer Research
|August 1, 2018
PubMed
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The complex interplay between ceramides and p53 influences cancer cell fate. Understanding their coregulation offers potential for novel anticancer therapeutics targeting both pathways.

Keywords:
CancerCancer therapeuticsCeramide signalingMetabolismTranscriptional regulationTumor suppressionp53

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Area of Science:

  • Cellular Biology
  • Molecular Oncology
  • Biochemistry

Background:

  • Ceramides are key signaling molecules involved in cellular pathways, including those regulated by p53.
  • The relationship between ceramides and p53 is intricate and not fully understood, impacting cancer cell processes like death, proliferation, and drug resistance.
  • p53 acts as a tumor suppressor, and its function is closely linked with ceramide metabolism and signaling.

Purpose of the Study:

  • To elucidate the complex coregulation between ceramides and p53 signaling in cancer.
  • To highlight the role of p53 in regulating ceramide pathways and the reciprocal regulation of p53 by ceramides.
  • To explore molecular mechanisms underlying ceramide-p53 interactions for potential therapeutic strategies.

Main Methods:

  • Review of recent studies on ceramide and p53 signaling pathways.
  • Analysis of molecular mechanisms including p53-dependent transcriptional regulation of sphingolipid enzymes.
  • Investigation of ceramide-mediated effects on p53 function, including alternative splicing and coregulator modulation.

Main Results:

  • p53 regulates ceramide metabolism through transcriptional control of key enzymes.
  • Ceramides can modulate p53 activity, including the activation of mutant p53 via alternative splicing.
  • The balance of ceramide species and their metabolic flux influences cancer cell responses, affecting p53's pro-death or pro-survival roles.

Conclusions:

  • The intricate bidirectional relationship between ceramides and p53 is mediated by diverse molecular mechanisms.
  • Targeting both ceramide and p53 pathways simultaneously presents a promising strategy for developing more effective anticancer therapies.
  • Further research into ceramide-p53 interactions is crucial for advancing cancer treatment modalities.