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死亡细胞清除的阴与阳 被引量:1

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摘要 机体每时每刻都有大量细胞凋亡,及时清除凋亡细胞对维持机体的免疫平衡至关重要,凋亡细胞被吞噬细胞清除过程分为:招募、识别和吞噬消化3个阶段。凋亡细胞清除表现为没有炎性反应或者一个已经存在的促炎反应在吞噬发生后被下调。当机体处于组织损伤和炎性反应状态或生理应激时,细胞发生凋亡或坏死,若凋亡细胞不能及时清除也会继发性坏死,细胞坏死释放内源性危险信号分子,也称为危险相关分子模式(DAMPs)。DAMPs在结构和功能上与侵入机体的外源性的保守的微生物即病原体相关分子模式的表面结构具有相似性,可被病原体识别受体(PRRs)识别,激活相关信号通路,产生自身抗体或活化其他免疫细胞,导致自身免疫性疾病或炎性反应。
出处 《国际检验医学杂志》 CAS 2018年第24期3075-3081,共7页 International Journal of Laboratory Medicine
基金 国家自然科学基金资助项目(81770038) 武汉市临床医学科研项目重点项目资助(WX17A01)
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