Cell Reports (Apr 2016)

Lithium Promotes Longevity through GSK3/NRF2-Dependent Hormesis

  • Jorge Iván Castillo-Quan,
  • Li Li,
  • Kerri J. Kinghorn,
  • Dobril K. Ivanov,
  • Luke S. Tain,
  • Cathy Slack,
  • Fiona Kerr,
  • Tobias Nespital,
  • Janet Thornton,
  • John Hardy,
  • Ivana Bjedov,
  • Linda Partridge

DOI
https://doi.org/10.1016/j.celrep.2016.03.041
Journal volume & issue
Vol. 15, no. 3
pp. 638 – 650

Abstract

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The quest to extend healthspan via pharmacological means is becoming increasingly urgent, both from a health and economic perspective. Here we show that lithium, a drug approved for human use, promotes longevity and healthspan. We demonstrate that lithium extends lifespan in female and male Drosophila, when administered throughout adulthood or only later in life. The life-extending mechanism involves the inhibition of glycogen synthase kinase-3 (GSK-3) and activation of the transcription factor nuclear factor erythroid 2-related factor (NRF-2). Combining genetic loss of the NRF-2 repressor Kelch-like ECH-associated protein 1 (Keap1) with lithium treatment revealed that high levels of NRF-2 activation conferred stress resistance, while low levels additionally promoted longevity. The discovery of GSK-3 as a therapeutic target for aging will likely lead to more effective treatments that can modulate mammalian aging and further improve health in later life.

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