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刺激受和/或颗粒所限制的巨细胞系,并嵌入结构化原凝中
Pedro U Muñoz-González1,2,3, Jorge Delgado1, Gerardo González-García2
1División de Ciencias e Ingenierías, Universidad de Guanajuato, León, México.
Journal of biomaterials applications
|February 11, 2025
概括
这项研究开发了新型的3D原凝与纳米颗粒控制巨细胞的行为. 这些免疫调节支架通过引导巨细胞表型,显示出抗炎应用的潜力.
科学领域:
- 生物材料科学 生物材料科学
- 免疫学 免疫学 免疫学
- 材料科学 材料科学 材料科学
背景情况:
- 巨细胞是关键的免疫细胞,其表型可以通过其微环境来调节.
- 与二维培养相比,三维 (3D) 支架为细胞研究提供了更具生理相关性的环境.
- 控制巨细胞表型对于开发有效的免疫调节疗法至关重要.
研究的目的:
- 为了研究3D原体凝的物理化学性质与氨酸和纳米颗粒功能化.
- 评估这些复合凝对巨细胞表型和激活的影响.
- 探索这些材料作为3D免疫调节支架的潜力.
主要方法:
- 使用二或三功能化橄氨酸和纳米粒子 (Si-O或Si-Si) 制造3D原纤维网络.
- 凝性质的表征,包括凝动力学,降解,胀和风湿学.
- 使用细胞封装,ELISA和其他测定方法评估巨细胞活力和表型.
主要成果:
- 复合凝的性能可以根据甲功能和含量进行调整.
- 在凝中封装的巨细胞表现出良好的活力,并采用了抗炎性表型,特别是在Si-Si纳米颗粒中.
- Si-Si纳米颗粒对抗促炎性刺激 (LPS,IFNγ) 并促进巨细胞的抗炎反应.
- 巨细胞活力与凝的储存模量正相关.
结论:
- 用添加的交联原体凝有效调节巨细胞的炎症反应.
- 这些3D复合材料有望成为治疗应用的免疫调节支架.
- 材料特性和的结合对于引导巨细胞行为向抗炎状态至关重要.
相关概念视频
Cell-mediated Immune Responses
Overview
Cell Motility through Blebbing
Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...
Blebbing Through the Matrix
In multicellular...
Phagocytosis of Apoptotic Cells
Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized by phagocytes.
Normal cells contain receptors that prevent them from being recognized by phagocytes.
GPCR Desensitization
G protein-coupled receptor (GPCR) signaling plays a crucial role in cell functioning. GPCR desensitization is an equally essential process. It allows cells to respond to changing environments and regain sensitivity to new stimuli while preventing unnecessary stimulation when no longer needed. Prolonged exposure to stimuli leads to GPCR desensitization. It involves blocking the receptors from binding and activating additional G proteins. This inhibits activation of downstream effectors, thereby...
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...
B Cell Activation and Differentiation
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...

