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Related Experiment Video

Updated: Dec 28, 2025

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High Dosage Lithium Treatment Induces DNA Damage and p57Kip2 Decrease.

Emanuela Stampone1, Debora Bencivenga1, Clementina Barone1

  • 1Department of Precision Medicine, University of Campania "Luigi Vanvitelli", 80100 Naples, Italy.

International Journal of Molecular Sciences
|February 14, 2020
PubMed
Summary

Lithium chloride (LiCl) at high doses damages DNA and reduces cell viability in neuroblastoma cells. Unexpectedly, lithium downregulates p57Kip2, a protein crucial for neuronal maturation, revealing new roles in DNA repair.

Keywords:
DNA damageDNA damage responseLiClSH-SY5Yoxidative stressp57Kip2

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Lithium salt is a primary treatment for bipolar disorder and shows potential as an antitumoral agent.
  • SH-SY5Y human neuroblastoma cells serve as an in vitro model for dopaminergic neuronal differentiation and genotoxicity studies.

Purpose of the Study:

  • To investigate the effects of lithium chloride (LiCl) on SH-SY5Y cell proliferation, viability, and DNA integrity.
  • To explore the impact of LiCl on p57Kip2 expression and its role in lithium-induced DNA damage.

Main Methods:

  • Treatment of SH-SY5Y cells with varying doses of LiCl.
  • Assessment of cell proliferation, cell cycle, and viability.
  • Analysis of DNA damage markers (p53, γH2AX).
  • Evaluation of p57Kip2 levels and its transcriptional regulation.

Main Results:

  • High doses of LiCl delay cell division, reduce cell viability, and cause DNA damage (increased p53 and γH2AX).
  • LiCl treatment downregulates p57Kip2 in a dose-dependent manner, primarily at the transcriptional level.
  • Reduced p57Kip2 levels are critical for lithium-induced DNA damage, suggesting its involvement in DNA double-strand break responses.

Conclusions:

  • Lithium at high concentrations induces DNA damage and affects cell viability in neuroblastoma cells.
  • Novel roles for p57Kip2 in mediating lithium's genotoxic effects and DNA repair mechanisms were identified.