脑区域特定的有机体的免疫调节,这些有机体含有异构的微状细胞
Chang Liu1, Justice Ene1, Wenyan Lu2
1Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, Florida, USA.
Advanced healthcare materials
|December 18, 2025
概括
这项研究将微状细胞 (MGC) 引入大脑器官,以模拟阿尔茨海默氏症 (AD) 神经退行. 含有MGC的有机体显示减少了炎症,并有可能开发新的基于EV的AD疗法.
科学领域:
- 神经科学是一个神经科学.
- 干细胞生物学 干细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 人类诱导多能干细胞 (iPSC) 衍生的脑器官往往缺乏微质,限制了它们在模拟神经炎症中的实用性.
- 微样细胞 (MGCs) 可以从iPSCs中区分出来,但它们的整合到用于疾病建模的大脑器官中仍未得到充分探索.
研究的目的:
- 在模拟阿尔茨海默氏病 (AD) 神经退行过程中研究含有MGC的同源性脑器官的特征.
- 在AD大脑器官模型中利用细胞外囊泡 (EVs) 探索细胞间通信和治疗潜力.
主要方法:
- 从iPSC衍生的MGC与同源前脑皮质器官 (iFCo) 的共同培养.
- 用来自AD患者衍生的iPSCs的EVs刺激器官,然后用健康的MGC或共同培养的EVs进行治疗.
- 对AD EVs进行蛋白质和微RNA测序分析,以确定货物和受管制路径.
主要成果:
- 共同培养的有机体在对AD EVs的反应中显示了缓解的促炎基因表达.
- 来自健康的MGC或共同培养的EV降低了关键的炎症和退行性标志物 (IL-12β, iNOS, TREM2, CASS4).
- AD EVs 含有 APOE 和 APP 蛋白质;微RNA 分析显示了线粒细胞衰变和其他途径的调节.
结论:
- 含有MGC的大脑有机体为研究AD中神经退行和神经炎症提供了更全面的模型.
- 来自健康的MGC或共同培养的EV通过调节炎症反应来表现出治疗潜力.
- 这种模型系统和EV货物分析为开发基于EV的AD无细胞治疗方法提供了洞察力.
相关概念视频
Cell-mediated Immune Responses
Overview
Cells of the Innate Immune Response
The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Immune Surveillance by NK Cells and Phagocytes
Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Special Features of Adaptive Immunity
The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
Antigens Involved in Adaptive Immunity
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Antigen Presenting Cells
The immune system is a complex network of cells and molecules that protects the body from foreign invaders. T cells, a type of white blood cell, play a crucial role in this process. They recognize and attack foreign substances, such as pathogens, that enter the body.
T cells require the help of antigen-presenting cells (APCs), which process foreign antigens into smaller fragments that can be recognized by T cells. These APCs are highly specialized cells that efficiently internalize antigens...
T cells require the help of antigen-presenting cells (APCs), which process foreign antigens into smaller fragments that can be recognized by T cells. These APCs are highly specialized cells that efficiently internalize antigens...


