代谢和行为变化与病毒载体介导的毒性相关,该毒性存在于副腹腔下丘脑核中的副腹腔下丘脑核中
Rohan Savani1, Erin Park1, Nidhi Busannagari1
1Rutgers The State University of New Jersey, New Brunswick, New Jersey, United States.
Bioscience reports
|January 16, 2024
概括
一种特定的腺相关病毒CRE制剂通过损害副腹腔下丘脑核,导致肥胖和焦虑. 这凸显了在使用病毒载体进行基因操纵时需要严格控制的必要性.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 代谢研究研究 代谢研究
背景情况:
- 腺关联病毒 (AAV) 介导的克瑞复合酶表达是化动物基因功能研究的关键工具.
- 与传统的Cre驱动鼠标相比,AAV-Cre提供了优势,包括节省时间和避免发展补偿.
- 副腹腔下垂体核 (PVN) 对于调节行为和新陈代谢至关重要.
研究的目的:
- 在成年小鼠中使用AAV-Cre对PVN中消化皮质otropin释放激素 (CRH) 的影响进行研究.
- 评估针对PVN的AV-Cre注射的行为和代谢后果.
- 评估AAV-Cre制剂的特异性和潜在毒性.
主要方法:
- 将AAV8-hSyn-Cre或AAV8-hSyn-GFP的立体注射到Crh花和野生型小鼠的PVN中.
- 对注射后的行为和代谢变化的评估.
- 对下丘脑皮性神经元和质细胞进行免疫组合化学分析,以检测细胞死亡和质症.
主要成果:
- 一种AAV8-hSyn-Cre制剂在两种性别和基因型中诱导了肥胖,过和类似焦虑的行为.
- 这种AAV-Cre制剂导致神经元细胞死亡和神经结,特别是在PVN注射部位.
- 另一种AAV-Cre来源没有产生类似的不良影响,表明批量特定的毒性.
结论:
- 一个特定的AAV-Cre批量可以在PVN中引起显著的细胞毒性和病变.
- 这些PVN病变导致了大量的代谢和行为变化,混了基因淘汰研究.
- 严格的控制和精心选择病毒载体批次对于可靠的CRE介导基因操纵研究至关重要.
相关概念视频
01:30Regulation of Food Intake
Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
01:26Encephalitis ll: Pathophysiology
Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...