在阿尔茨海默氏症中微质甘油性重编程:与细胞功能受损和血管接近度变化的关联
Ning Lu1,2,3,4, Zhongman Jin1,2, Nian Liu1,2
1State Key Laboratory of Common Mechanism Research for Major Disease, School of Basic Medicine Peking Union Medical College, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Beijing, 100005, China.
Journal of neuroinflammation
|October 2, 2025
概括
阿尔茨海默氏病 (AD) 中的微质体显示出改变的新陈代谢 (PKM2),导致炎症和粉样β和tau的清除受损. 针对这些代谢途径可能会提供新的AD疗法.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 代谢过程中的代谢.
背景情况:
- 阿尔茨海默病 (AD) 涉及神经炎症,粉样β斑块和陶.
- 微质,大脑的免疫细胞,表现出代谢变化,特别是在糖解中,这可能会加剧炎症并阻碍有毒蛋白质的清除.
- 酶酸盐激酶M2 (PKM2) 与促进与神经退行相关的微质炎症有关.
研究的目的:
- 为了研究PKM2介导的微质糖质重编程在阿尔茨海默病中的作用.
- 为了检查PKM2,微质炎症反应和人类AD大脑中的粉样β和酸化的清除之间的关系.
主要方法:
- 用多重免疫组织化学和空间分析分析阿兹海默症患者和对照组的海马体-内腔皮层组织的分析.
- 量化PKM2-阳性微质细胞及其与粉样β斑块,团和脑血管的关联.
- 评估微质细胞活动和表型 (HAM类,LDAM).
主要成果:
- 在AD大脑中增加了PKM2+微质的密度,具有与疾病相关的 (类似HAM) 表型和脂质积累.
- 在粉样蛋白斑块,团和血管附近发现了PKM2+微质,观察到化学反应受损.
- 在阿尔茨海默氏症中,总体微质细胞食活性显著下降,PKM2+微质细胞表现出明显的食性疲劳.
结论:
- 通过PKM2进行微质甘油性重编程,驱动一种促炎性表型,细胞性疲劳,并在AD的病理标志周围积累.
- 向微质糖解,通过解决微质功能障碍和神经炎症,为AD提供了潜在的治疗策略.
相关概念视频
01:21Smooth Endoplasmic Reticulum
Smooth endoplasmic reticulum or smooth ER is a sub-organelle with specialized functions in animal cells and plant cells. It is often associated with the tubule morphology of the endoplasmic reticulum.
The ER provides optimal conditions for synthesizing steroid hormones and lipids, such as phospholipids and triglycerides. Traditionally, lipid metabolism was considered to be a smooth ER function. However, there is no direct evidence to prove that rough ER is completely excluded from lipid...
The ER provides optimal conditions for synthesizing steroid hormones and lipids, such as phospholipids and triglycerides. Traditionally, lipid metabolism was considered to be a smooth ER function. However, there is no direct evidence to prove that rough ER is completely excluded from lipid...
01:29Hepatic Encephalopathy
DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...
01:21Chronic Pancreatitis II: Pathophysiology
Chronic pancreatitis is a progressive and irreversible inflammation of the pancreas, most often caused by long-term alcohol abuse, but it can also be related to ductal obstruction, smoking, or genetic factors.Chronic pancreatitis occurs when the pancreas is repeatedly exposed to harmful agents like alcohol, smoking, ductal obstruction, or genetic predisposition. These factors lead to the release of toxic metabolites and inflammatory cytokines, sustaining chronic inflammation in the pancreatic...