Explore/P21 (Cyclin-Dependent Kinase Inhibitor 1)

P21 (Cyclin-Dependent Kinase Inhibitor 1)

Longevity • Peptide

○ Early ResearchResearch Only
Evidence
Weak2/10
Hype
Moderate4/10
Risk
High8/10
Beginner Friendly
Weak1/10

Plain English Summary

P21 is a protein that acts as a critical regulator of the cell cycle, serving as a checkpoint to stop damaged or stressed cells from dividing. By inducing cell-cycle arrest, it helps prevent the replication of mutated DNA and aids in the clearance of senescent (aged/damaged) cells via the immune system.

What People Use It For

Cellular senescence managementDNA damage response researchOncology researchLongevity and aging studies

Side Effects & Risks

Common Side Effects

Unintended cell cycle arrest in healthy tissueDisruption of normal tissue repairPotential for paradoxical oncogenic signalingUnknown long-term systemic effects

References

  • 1https://pubmed.ncbi.nlm.nih.gov/27156098/
  • 2https://pubmed.ncbi.nlm.nih.gov/34709885/
  • 3https://pubmed.ncbi.nlm.nih.gov/35024619/
  • 4https://pubmed.ncbi.nlm.nih.gov/31416295/
  • 5https://pubmed.ncbi.nlm.nih.gov/35443176/
  • 6https://pubmed.ncbi.nlm.nih.gov/32481484/
  • 7https://pubmed.ncbi.nlm.nih.gov/24858045/
  • 8https://pubmed.ncbi.nlm.nih.gov/41178462/

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This is not medical advice. Always consult a licensed healthcare provider before using any compound. No dosing or sourcing guidance is provided.