呈指数下降的抗原释放以抗原特定的方式减少炎症标记物
Arezoo Esrafili1, Aleksandr Talitckii2, Joshua Kupfer1
1Chemical Engineering, School for the Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona, USA.
Journal of biomedical materials research. Part A
|July 9, 2025
概括
使用可编程和生物材料控制的抗原输送调节免疫反应. 量身定制的释放动力学,如降低卵蛋白 (OVA) 概况,促进调节性T细胞 (Tregs) 和减少炎症,增强免疫调节和记忆.
科学领域:
- 免疫学 免疫学 免疫学
- 生物材料科学 生物材料科学
- 疫苗开发 疫苗开发
背景情况:
- 优化疫苗有效性需要创新的策略来增强免疫反应和减少免疫接种的频率.
- 控制的抗原递送系统对于微调免疫激活和调节至关重要.
- 了解适应性免疫反应对抗原释放动力学的理解,对于设计有效的疫苗至关重要.
研究的目的:
- 研究受控抗原释放配置文件对免疫激活和调节的影响.
- 为了比较指数级下降和增加卵蛋白 (OVA) 输送对小鼠适应性免疫反应的影响.
- 确定关键的免疫细胞群和与独特的免疫反应与抗原释放动力学相关的生物标志物.
主要方法:
- 使用可编程输液和可生物降解的PLGA-PEG-PLGA (PPP) 仓库,用于控制OT-II和野生类型小鼠的OVA输送.
- 通过指数性降低和增加释放配置文件来管理OVA,以分别模仿感染清除和诱导.
- 采用具有序列特征选择 (SFS) 的机器学习 (ML) 模型来分析T细胞种群并识别关键免疫标记物.
主要成果:
- 指数式下降的OVA递送促进了调控性T细胞 (Treg) 激活,并抑制了T助手17型 (Th17) 反应.
- 指数式增加OVA传递增强了中央记忆T细胞 (TCM) 种群和幽默免疫反应.
- 可生物降解的PPP储存物以下降的模式输送OVA减少了促炎T助手1型 (Th1) 细胞和增加了Tregs.
- ML分析发现了特定的T细胞标记物 (例如,RORγt+,FOXP3+/GATA3+比率,CD25+FOXP3+Tregs),表明了对OVA释放动态的独特免疫反应.
结论:
- 控制的抗原递送,特别是通过降低释放谱,可以增强免疫调节并促进记忆T细胞的产生.
- 抗原释放的动力学显著影响了适应性免疫反应的类型和规模.
- 这项研究为优化疫苗设计提供了新的见解,通过精确控制抗原输送配置文件来优化疫苗设计.
更多相关视频
11:31High-Efficiency Generation of Antigen-Specific Primary Mouse Cytotoxic T Cells for Functional Testing in an Autoimmune Diabetes Model
Published on: August 16, 2019
8.0K
08:43Adoptive Immunotherapy of iNKT Cells in Glucose-6-Phosphate Isomerase G6PI-Induced RA Mice
Published on: January 31, 2020
6.9K
相关概念视频
Inflammatory Response
8.1K
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
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,...
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,...
8.1K
Desensitization and Tachyphylaxis
2.2K
Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
2.2K
Antigens Involved in Adaptive Immunity
694
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...
Complete Antigens
Complete antigens possess both immunogenicity and...
694
T Cell Types and Functions
1.4K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
1.4K
Vaccinations
45.3K
Overview
45.3K
Immune Response Against Viral Pathogens
931
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
931
