Journal of Medicinal Chemistry p. 9062 - 9079 (2016)
Update date:2022-08-15
Topics: Experimental Parkinson's Disease Drug Candidate Neuroinflammation Src Signaling Pathway Anti-neuroinflammatory
Wang, Ya-Dan
Bao, Xiu-Qi
Xu, Song
Yu, Wen-Wen
Cao, Sheng-Nan
Hu, Jin-Ping
Li, Yan
Wang, Xiao-Liang
Zhang, Dan
Yu, Shi-Shan
Numerous drug treatments are available for Parkinson's disease (PD), an age-related neurodegenerative disease, but most cause serious side effects. Therefore, novel therapeutic strategies that halt disease progression and allow for long-term administration are urgently needed. Neuroinflammation critically contributes to the pathogenesis of PD. Here, we report the discovery and optimization of phloroglucinol derivatives, a novel class of anti-neuroinflammatory compounds. Structural modifications of the hit compound 3-methyl-1-(2,4,6-trihydroxyphenyl)butan-1-one produced 43 derivatives, including a preclinical candidate (compound 21), that exhibited potent in vitro anti-neuroinflammatory effects, good blood-brain barrier penetration, and desirable safety margins in mice at a median lethal dose (LD50) >5000 mg/kg. Its in vivo efficacy was demonstrated in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)- and MPTP/probenecid (prob)-induced subacute and chronic PD models, respectively, and α-synuclein transgenic mice. Mechanistic studies revealed neuroinflammation inhibition by targeting Src/phosphatase and tensin homologue deleted on chromosome 10 (PTEN)/Akt signaling might be promising. We highlighted the potential usefulness of phloroglucinol derivatives in PD treatment.
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