Neuroprotectin D1 upregulates Iduna expression and provides protection in cellular uncompensated oxidative stress and in experimental ischemic stroke.

Abstract

Ring finger protein 146 (Iduna) facilitates DNA repair and protects against cell death induced by NMDA receptor-mediated glutamate excitotoxicity or by cerebral ischemia. Neuroprotectin D1 (NPD1), a docosahexaenoic acid (DHA)-derived lipid mediator, promotes cell survival under uncompensated oxidative stress (UOS). Our data demonstrate that NPD1 potently upregulates Iduna expression and provides remarkable cell protection against UOS. Iduna, which was increased by the lipid mediator, requires the presence of the poly(ADP-ribose) (PAR) sites. Moreover, astrocytes and neurons in the penumbra display an enhanced abundance of Iduna, followed by remarkable neurological protection when DHA, a precursor of NPD1, is systemically administered 1 h after 2 h of ischemic stroke. These findings provide a conceptual advancement for survival of neural cells undergoing challenges to homeostasis because a lipid mediator, made 'on demand,' modulates the abundance of a critically important protein for cell survival.

• Authors: Ludmila Belayev, Pranab K Mukherjee, Veronica Balaszczuk, Jorgelina M Calandria, Andre Obenaus, Larissa Khoutorova, Sung-Ha Hong, Nicolas G Bazan
• Journal: Cell death and differentiation (Cell Death Differ) Vol. 24 Issue 6 Pg. 1091-1099 (06 2017) ISSN: 1476-5403 [Electronic] England
• PMID: 28430183 (Publication Type: Journal Article)

Chemical References

• protectin D1
• Docosahexaenoic Acids
• RNF146 protein, human
• Ubiquitin-Protein Ligases

Topics

• Brain Ischemia (metabolism, physiopathology)
• Cell Line
• Docosahexaenoic Acids (metabolism)
• Gene Expression Regulation
• Humans
• Neurons (metabolism, physiology)
• Oxidative Stress
• Signal Transduction
• Stroke (metabolism, physiopathology)
• Ubiquitin-Protein Ligases (genetics, metabolism)
• Up-Regulation