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Engineering Biomaterials for Control of Immune Cell Functions

机译:用于控制免疫细胞功能的工程生物材料

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Development of biomaterials that exert control over the function of cells of the immune system could lead to new immunotherapies for treatment of diseases as diverse as cancer, persistent viral infections, and autoimmunity. Biomaterials can also be envisioned that serve as model scaffolds for studying the function of immune cells in a three-dimensional biomimetic environment, where particular aspects of cell function can be probed by systematic variation of physical parameters. We are currently developing materials for these two immunological applications, first for basic studies of lymphocyte function in a lymphoid tissue-mimicking synthetic structure, and second as engineered vaccines. To create an in vitro 3D model of the T zone of the lymph node, we have developed a novel approach based on colloidal crystal templating to create hydrogel structures presenting ECM-derived adhesion peptides. This 3D biomimetic matrix can be used to identify the influence of environmental factors on lymphocyte activation. For engineered vaccines, we are studying antigen-delivery particles designed to activate dendritic cells (DCs) in vivo. Biodegradable hydrogel particles with diameters ranging from < 100 nm to ~1 μm have been prepared with pH-sensitive co-monomers to allow these antigen-encapsulating particles to respond to the reduced pH within endosomes of DCs.
机译:控制免疫系统细胞功能的生物材料的开发可能会导致新的免疫疗法,用于治疗各种疾病,例如癌症,持续性病毒感染和自身免疫。还可以设想用作模型支架的生物材料,用于研究三维仿生环境中免疫细胞的功能,其中可以通过系统地改变物理参数来探测细胞功能的特定方面。我们目前正在开发用于这两种免疫学应用的材料,首先是用于模仿类淋巴组织的合成结构中淋巴细胞功能的基础研究,其次是工程疫苗。为了创建淋巴结T区的体外3D模型,我们已经开发了一种基于胶体晶体模板的新颖方法,以创建呈现ECM衍生粘附肽的水凝胶结构。此3D仿生矩阵可用于识别环境因素对淋巴细胞激活的影响。对于工程疫苗,我们正在研究旨在在体内激活树突状细胞(DC)的抗原传递颗粒。已使用pH敏感的共聚单体制备了直径在<100 nm至〜1μm范围内的可生物降解的水凝胶颗粒,以使这些包裹抗原的颗粒能够响应DC内体中pH的降低。

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