抗炎胆固醇途径的分子成分是外的
Warda Merchant1, Steven Wyler1, Bandy Chen1
1Center for Hypothalamic Research and Department of Internal Medicine, UT Southwestern Medical Center, Harry Hines blvd, Dallas, Texas, Unites States of America.
胆固醇抗炎途径
科学领域:
- 神经免疫学
- 自主神经系统
- 炎症研究
背景情况:
- 胆固醇抗炎途径涉及神经和脏免疫细胞的相互作用.
- 这种途径的确切机制,特别是脏参与,尚未完全理解.
- 自主受体在调节免疫反应方面发挥作用.
研究的目的:
- 在小鼠中绘制胆固醇抗炎途径的关键分子成分的表达.
- 研究中胆转移酶 (Chat) 和7α尼古丁乙胆受体 (Chrna7) 的作用.
- 在炎症和胆固醇信号的背景下探索β2上腺素受体 (Adrb2) 的表达.
主要方法:
- 使用RNAScope在现场杂交 (ISH) 和定量PCR (qPCR) 进行基因表达分析.
- 在C57BL/6J野生型雄性小鼠中检查基因表达,包括在脂多糖化物 (LPS) 治疗后.
- 对 Chrna7 和一个 ChAT-Cre-ChR2-YFP 记者鼠标进行了分析.
主要成果:
- 在自主神经元中表达了Chat和Chrna7,但即使在LPS刺激后,在脏中显著缺席.
- 在LPS治疗后,Adrb2在脏表达高,并且下降.
- 在Chrna7淘汰赛小鼠的脏中,Adrb2的表达减少;在ChAT- Cre- ChR2- YFP小鼠中,没有检测到脏YFP信号.
结论:
- 这些发现挑战了Chat和Chrna7在胆固醇抗炎途径中的直接脏作用.
- 这表明脏中的Adrb2信号是由炎症和潜在的Chrna7调节的.
- 在抗炎途径中强调外胆能信号的修订模型.
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