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Neuroprotective and neurogenic effects of novel tetramethylpyrazine derivative T-006 in Parkinson's disease models through activating the MEF2-PGC1α and BDNF/CREB pathways.

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机构: [1]International Cooperative Laboratory of Traditional Chinese Medicine Modernization, Innovative Drug Development of Chinese Ministry of Education, Institute of New Drug Research, Jinan University College of Pharmacy, Guangzhou, China [2]School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China [3]Foshan Stomatology Hospital, School of Stomatology and Medicine, Foshan University, Foshan, China
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关键词: tetramethylpyrazine derivative T-006 Parkinson’s disease transcriptional factor myocyte enhancer factor 2D peroxisome proliferator-activated receptor γ (PPARγ) co-activator 1α adult neurogenesis

摘要:
T-006, a new derivative of tetramethylpyrazine, has been recently found to protect against 6-hydroxydopamine (6-OHDA)-induced neuronal damage and clear α-synuclein (α-syn) by enhancing proteasome activity in an α-syn transgenic Parkinson's disease (PD) model. The effect of T-006 on the 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP)-induced PD model, however, has not been tested and T-006's neuroprotective mechanisms have not been fully elucidated. In this study, we further investigated the neuroprotective and neurogenic effects of T-006 and explored its underlying mechanism of action in both cellular and animal PD models. T-006 was able to improve locomotor behavior, increase survival of nigra dopaminergic neurons and boost striatal dopamine levels in both MPTP- and 6-OHDA-induced animals. T-006 treatment restored the altered expressions of myocyte enhancer factor 2D (MEF2D), peroxisome proliferator-activated receptor γ (PPARγ) co-activator 1α (PGC1α) and NF-E2-related factor 1/2 (Nrf1/2) via modulation of Akt/GSK3β signaling. T-006 stimulated MEF2, PGC1α and Nrf2 transcriptional activities, inducing Nrf2 nuclear localization. Interestingly, T-006 promoted endogenous adult neurogenesis toward a dopaminergic phenotype by activating brain-derived neurotrophic factor (BDNF) and cAMP responsive element-binding protein (CREB) in 6-OHDA rats. Our work demonstrated that T-006 is a potent neuroprotective and neuroregenerative agent that may have therapeutic potential in the treatment of PD.

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出版当年[2019]版:
大类 | 2 区 医学
小类 | 2 区 老年医学 3 区 细胞生物学
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第一作者机构: [1]International Cooperative Laboratory of Traditional Chinese Medicine Modernization, Innovative Drug Development of Chinese Ministry of Education, Institute of New Drug Research, Jinan University College of Pharmacy, Guangzhou, China [2]School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China
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