中国神经再生研究(英文版) ›› 2018, Vol. 13 ›› Issue (11): 1937-1944.doi: 10.4103/1673-5374.239442

• 原著:神经损伤修复保护与再生 • 上一篇    下一篇

易位蛋白配体YL-IPA08以促进神经元再生减轻脂多糖诱导的抑郁样行为

  

  • 收稿日期:2018-07-11 出版日期:2018-11-15 发布日期:2018-11-15
  • 基金资助:

    中国国家自然科学基金项目(8167050047

Translocator protein ligand, YL-IPA08, attenuates lipopolysaccharide-induced depression-like behavior by promoting neural regeneration

Xiao-Ying Zhang1, 2, Li-Ming Zhang1, Wei-Dong Mi2, Yun-Feng Li1   

  1. 1 Anesthesia and Operation Center, Chinese PLA General Hospital, Beijing, China
    2 State Key Laboratory of Toxicology and Medical Countermeasures, Beijing, China
  • Received:2018-07-11 Online:2018-11-15 Published:2018-11-15
  • Contact: Wei-Dong Mi, MD, PhD or Yun-Feng Li, MD, PhD,wwdd1962@aliyun.com or lyf619@aliyun.com.
  • Supported by:

    This study was supported by the National Natural Science Foundation of China, No. 8167050047

摘要:

研究显示,易位蛋白(18kDa)可能在抑郁症的发病中起重要作用,因此实验拟探索新型易位蛋白配体YL-IPA08对减轻炎症诱导的抑郁样行为的影响及可能的作用机制。首先给小鼠脑室内单次注射1,10,100和1000 ng脂多糖,通过悬尾试验和强迫游泳试验证实100ng脂多糖可诱发小鼠的抑郁样行为。然后以100ng脂多糖脑室内单次注射小鼠建立后续研究模型,造模后16-24d,每天以3 mg/kg 的YL-IPA08灌胃治疗抑郁小鼠。以免疫组化染色检测抑郁小鼠大脑海马组织中BrdU和NeuN阳性表达情况,发现YL-IPA08可有效逆转脂多糖干预小鼠的抑郁样行为,恢复其体质量,增加了BrdU阳性细胞数量、BrdU和NeuN双阳性细胞的数量和比例。表明YL-IPA08可通过促进海马神经元的生成,减轻抑郁小鼠的抑郁样行为。

orcid:0000-0001-9814-2450(Wei-Dong Mi)
        0000-0002-9696-890X(Yun-Feng Li)

 

关键词: YL-IPA08, 海马, 齿状回, 神经再生, 脂多糖, 神经炎症, 抑郁, 易位蛋白(18kDa)

Abstract:

Translocator protein has received attention for its involvement in the pathogenesis of depression. This study assessed the effects of the new translocator protein ligand, YL-IPA08, on alleviating inflammation-induced depression-like behavior in mice and investigated its mechanism of action. Mice were intracerebroventricularly injected with 1, 10, 100 or 1000 ng lipopolysaccharide. The tail-suspension test and the forced swimming test confirmed that 100 ng lipopolysaccharide induced depression-like behavior. A mouse model was then established by intraventricular injection of 100 ng lipopolysaccharide. On days 16–24 after model establishment, mice were intragastrically administered 3 mg/kg YL-IPA08 daily. Immunohistochemistry was used to determine BrdU and NeuN expression in the hippocampus. YL-IPA08 effectively reversed the depression-like behavior of lipopolysaccharide-treated mice, restored body mass, increased the number of BrdU-positive cells, and the number and proportion of BrdU and NeuN double-positive cells. These findings indicate that YL-IPA08 can attenuate lipopolysaccharide-induced depression-like behavior in mice by promoting the formation of hippocampal neurons.

Key words: nerve regeneration, YL-IPA08, hippocampus, dentate gyrus, lipopolysaccharide, neuroinflammation, depression, translocator protein, neural regeneration