鼻内人类NSC衍生的EVs疗法可以抑制炎症性微质转录组,NLRP3和cGAS-STING信号,在老年海马中
Leelavathi N Madhu1, Maheedhar Kodali1, Shama Rao1
1Institute for Regenerative Medicine, Department of Cell Biology and Genetics, College Station, Texas A&M University Naresh Vashisht College of Medicine, College Station, Texas, USA.
来自神经干细胞 (hiPSC-NSC-EVs) 的鼻腔外细胞囊减少老年小鼠的神经炎症. 这种疗法通过调节微质通路来改善线粒体功能和认知表现.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 老年学是一门学科.
背景情况:
- 神经炎症,以慢性海马体炎症为特征,有助于与年龄相关的认知衰退.
- 这种炎症涉及NLRP3炎症酶和cGAS-STING-IFN-1通路的激活.
- 来自人类诱导多能干细胞衍生神经干细胞 (hiPSC-NSC-EVs) 的细胞外囊泡具有神经炎症的治疗潜力.
研究的目的:
- 为了研究鼻内hiPSC-NSC-EVs对中年老鼠神经炎症的影响.
- 确定hiPSC-NSC-EV是否可以缓解海马体炎症并改善衰老中的认知功能.
主要方法:
- 向18个月大的雄性和雌性小鼠注射两剂hiPSC-NSC-EVs的鼻入剂量.
- 对海马组织进行炎症标记,氧化应激和线粒体完整性的分析.
- 在实验室测试使用RAW细胞和单细胞RNA测序微质细胞治疗后.
主要成果:
- hiPSC-NSC-EVs治疗减少了天体细胞缩,微质和海马体的氧化应激.
- 治疗降低了NLRP3炎症酶,p38 MAPK,cGAS-STING-IFN-1和JAK-STAT通路的激活.
- 在hiPSC-NSC-EV中,特定的miRNAs (miRNA-30e-3p和miRNA-181a-5p) 被确定为关键抑制剂.
- 单细胞RNA测序揭示了hiPSC-NSC-EVs将微质转移到一种抗炎和代谢有效的状态.
- 在接受治疗的动物中观察到改善的认知和记忆功能.
结论:
- 内鼻治疗hiPSC-NSC-EVs有效地减轻老化海马中的神经炎症.
- 该疗法增强了线粒体功能,并减少了微质中的炎症信号.
- 这种治疗方法为改善老年大脑功能提供了一个有希望的策略.
更多相关视频
09:12Characterization of Inflammatory Responses During Intranasal Colonization with Streptococcus pneumoniae
Published on: January 17, 2014
05:00Transplantation of Human Stem Cell-Derived GABAergic Neurons into the Early Postnatal Mouse Hippocampus to Mitigate Neurodevelopmental Disorders
Published on: November 11, 2022
相关概念视频
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
Inflammatory Response
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Aging
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Role of Hippocampus in Memory
Inflammatory Response II: Inflammatory Exudate and Tissue Repair
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
Gene Therapy
