Investigating Therapeutic Effects of Indole Derivatives Targeting Inflammation and Oxidative Stress in Neurotoxin-Induced Cell and Mouse Models of Parkinson's Disease.

Abstract

Neuroinflammation and oxidative stress have been emerging as important pathways contributing to Parkinson's disease (PD) pathogenesis. In PD brains, the activated microglia release inflammatory factors such as interleukin (IL)-β, IL-6, tumor necrosis factor (TNF)-α, and nitric oxide (NO), which increase oxidative stress and mediate neurodegeneration. Using 1-methyl-4-phenylpyridinium (MPP+)-activated human microglial HMC3 cells and the sub-chronic 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse model of PD, we found the potential of indole derivative NC009-1 against neuroinflammation, oxidative stress, and neurodegeneration for PD. In vitro, NC009-1 alleviated MPP+-induced cytotoxicity, reduced NO, IL-1β, IL-6, and TNF-α production, and suppressed NLR family pyrin domain containing 3 (NLRP3) inflammasome activation in MPP+-activated HMC3 cells. In vivo, NC009-1 ameliorated motor deficits and non-motor depression, increased dopamine and dopamine transporter levels in the striatum, and reduced oxidative stress as well as microglia and astrocyte reactivity in the ventral midbrain of MPTP-treated mice. These protective effects were achieved by down-regulating NLRP3, CASP1, iNOS, IL-1β, IL-6, and TNF-α, and up-regulating SOD2, NRF2, and NQO1. These results strengthen the involvement of neuroinflammation and oxidative stress in PD pathogenic mechanism, and indicate NC009-1 as a potential drug candidate for PD treatment.

• Authors: Ya-Jen Chiu, Chih-Hsin Lin, Chung-Yin Lin, Pei-Ning Yang, Yen-Shi Lo, Yu-Chieh Chen, Chiung-Mei Chen, Yih-Ru Wu, Ching-Fa Yao, Kuo-Hsuan Chang, Guey-Jen Lee-Chen
• Journal: International journal of molecular sciences (Int J Mol Sci) Vol. 24 Issue 3 (Jan 30 2023) ISSN: 1422-0067 [Electronic] Switzerland
• PMID: 36768965 (Publication Type: Journal Article)

Chemical References

• Neurotoxins
• NLR Family, Pyrin Domain-Containing 3 Protein
• Tumor Necrosis Factor-alpha
• Interleukin-6
• 1-Methyl-4-phenylpyridinium
• 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine

Topics

• Mice
• Humans
• Animals
• Parkinson Disease (drug therapy, etiology, metabolism)
• Neurotoxins (pharmacology)
• NLR Family, Pyrin Domain-Containing 3 Protein (metabolism)
• Tumor Necrosis Factor-alpha (metabolism)
• Neuroinflammatory Diseases
• Interleukin-6 (metabolism)
• Inflammation (drug therapy, metabolism)
• Microglia (metabolism)
• 1-Methyl-4-phenylpyridinium (toxicity)
• Oxidative Stress
• Disease Models, Animal
• Mice, Inbred C57BL
• 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (adverse effects)