中国神经再生研究(英文版) ›› 2021, Vol. 16 ›› Issue (6): 1005-1010.doi: 10.4103/1673-5374.300447

• 原著:神经损伤修复保护与再生 •    下一篇

恩他卡朋可促进小鼠海马神经发生

  

  • 出版日期:2021-06-15 发布日期:2020-12-31
  • 基金资助:

    韩国政府(MSIP)资助的韩国国家研究基金会(NRF)资助(NRF-2016R1A2B4009156),首尔国立大学(SNU)于2015年发起的有前途的研究人员计划以及兽医科学研究所资助项目

Entacapone promotes hippocampal neurogenesis in mice

Dae Young Yoo1, 2, Hyo Young Jung1, Woosuk Kim1, 3, Kyu Ri Hahn1, Hyun Jung Kwon4, Sung Min Nam5, Jin Young Chung6, Yeo Sung Yoon1, Dae Won Kim4, In Koo Hwang1, *   

  1. 1 Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea;  2 Department of Anatomy, College of Medicine, Soonchunhyang University, Cheonan, South Korea;  3 Department of Biomedical Sciences, and Research Institute for Bioscience and Biotechnology, Hallym University, Chuncheon, South Korea;  4 Department of Biochemistry and Molecular Biology, Research Institute of Oral Sciences, College of Dentistry, Gangneung-Wonju National University, Gangneung, South Korea;  5 Department of Anatomy, College of Veterinary Medicine, Konkuk University, Seoul, South Korea;  6 Department of Veterinary Internal Medicine and Geriatrics, College of Veterinary Medicine, Kangwon National University, Chuncheon, South Korea
  • Online:2021-06-15 Published:2020-12-31
  • Contact: In Koo Hwang, DVM, PhD, vetmed2@snu.ac.kr.
  • Supported by:
    This study was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) (NRF-2016R1A2B4009156), the Promising-Pioneering Researcher Program through Seoul National University (SNU) in 2015 and by the Research Institute for Veterinary Science, Seoul National University.

摘要:

儿茶酚-O-甲基转移酶抑制剂恩他卡朋可增强左旋多巴治疗帕金森病的效果,但其是否会影响小鼠海马的神经发生则少见报道。为研究了多巴胺的调节剂恩他卡朋对健康小鼠海马齿状回中细胞增殖和未成熟神经元的影响,实验随机将7周龄雄性小鼠分为溶媒对照组和10,50和200 mg/kg 恩他卡朋干预组。结果发现,50和200 mg/kg恩他卡朋增加了小鼠新物体识别的探索时间。免疫组化染色结果显示,恩他卡朋干预后,小鼠海马齿状回中Ki67阳性增殖细胞和DCX阳性未成熟神经元以及磷酸化cAMP反应元件结合蛋白(pCREB)阳性细胞数量明显增加。Western blot检测结果显示,TrkB受体拮抗剂治疗明显减少了小鼠新物体识别的探索时间,并抑制了海马中磷酸化TrkB和脑源性神经营养因子的表达,而恩他卡朋处理则拮抗了TrkB受体拮抗剂的作用。实验结果表明,恩他卡朋可通过激活BDNF-TrkB-pCREB信号通路以促进海马神经发生和改善记忆功能。实验于2014年2月24日经首尔国立大学动物保护与使用委员会批准(批准号SNU-130730-1)

https://orcid.org/0000-0002-0533-4638 (In Koo Hwang)

Abstract: Entacapone, a catechol-O-methyltransferase inhibitor, can strengthen the therapeutic effects of levodopa on the treatment of Parkinson’s disease. However, few studies are reported on whether entacapone can affect hippocampal neurogenesis in mice. To investigate the effects of entacapone, a modulator of dopamine, on proliferating cells and immature neurons in the mouse hippocampal dentate gyrus, 60 mice (7 weeks old) were randomly divided into a vehicle-treated group and the groups treated with 10, 50, or 200 mg/kg entacapone. The results showed that 50 and 200 mg/kg entacapone increased the exploration time for novel object recognition. Immunohistochemical staining results revealed that after entacapone treatment, the numbers of Ki67-positive proliferating cells, doublecortin-positive immature neurons, and phosphorylated cAMP response element-binding protein (pCREB)-positive cells were significantly increased. Western blot analysis results revealed that treatment with tyrosine kinase receptor B (TrkB) receptor antagonist significantly decreased the exploration time for novel object recognition and inhibited the expression of phosphorylated TrkB and brain-derived neurotrophic factor (BDNF). Entacapone treatment antagonized the effects of TrkB receptor antagonist. These results suggest that entacapone treatment promoted hippocampal neurogenesis and improved memory function through activating the BDNF-TrkB-pCREB pathway. This study was approved by the Institutional Animal Care and Use Committee of Seoul National University (approval No. SNU-130730-1) on February 24, 2014.

Key words: brain-derived neurotrophic factor, entacapone, hippocampus, neurogenesis, neurotrophic factor, phosphorylated cAMP response element-binding protein, tyrosine kinase receptor B receptor