吞噬体经过早期内体、晚期内体和溶酶体融合的变化,最终生成能降解抗原或杀死病原微生物的过程称为吞噬体成熟。吞噬体在不同免疫细胞中成熟后的功能差异,导致其对抗原摄取后的加工呈现不同的特征。通过比较中性粒细胞、巨噬细胞和树突状细胞3种免疫细胞摄取抗原后的吞噬体功能差异,发现免疫细胞抗原降解能力与抗原提呈能力相反,三者中树突状细胞的抗原提呈能力最强,巨噬细胞次之,中性粒细胞最弱。免疫细胞吞噬体成熟与抗原提呈能力的深入研究,将为疫苗研制和免疫治疗提供新的思路。
Phagosomes undergo the fusion of early endosomes, late endosomes and lysosomes, and then degrade antigens and kill pathogenic microorganisms, which is called phagosome maturation. The functional differences of phagosomes after maturation in different immune cells lead to distinct characteristics on their processing of phagocytic antigens. It has been found that the antigen degradation ability of immune cells is opposite to their antigen presentation capacity through comparing the functional differences of phagosomes from neutrophils, macrophages and dendritic cells after antigens uptake. Among them, dendritic cells have the strongest antigen presentation capacity, followed by macrophages and neutrophils. The in-depth study of immune cell phagosome maturation and antigen presentation will provide new strategies for vaccine development and immunotherapy.
张婷婷,李轶杰,李金耀. 中性粒细胞、巨噬细胞和树突状细胞吞噬体成熟及其功能研究进展[J]. 中华微生物学和免疫学杂志,2021,41(07):565-570.
DOI:10.3760/cma.j.cn112309-20200828-00416版权归中华医学会所有。
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