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免疫调节分子表达在艾滋病毒感染者的细胞外微粒上
Deborah Neyrinck-Leglantier1,2,3, Marie Tamagne1,2,3, Raida Ben Rayana4
1Univ Paris Est-Creteil (UPEC), Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Mondor de la Recherche Biomédicale (IMRB), Creteil, France.
Frontiers in immunology
|March 19, 2024
概括
艾滋病毒感染者 (PLWH) 的循环微粒 (MPs) 数量增加,这些微粒表达免疫激活分子. 这些MP可能有助于PLWH的慢性免疫激活,即使有有效的抗逆转录病毒疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- 抗逆转录病毒治疗可以控制HIV复制,但不能解决慢性免疫激活.
- 在PLWH中慢性免疫激活有助于炎症性并发症.
- 微粒 (MP) 是细胞外囊泡,与免疫激活和疾病有关.
研究的目的:
- 在艾滋病毒感染者 (PLWH) 中描述MP.
- 评估MPs与PLWH中慢性免疫激活之间的关联.
主要方法:
- 流细胞测量用于从PLWH和对照组的血中表型MPs.
- 评估了MP数量,大小,细胞起源和免疫调节特征.
- 从血小板 (PMPs),单细胞 (MMPs) 和T淋巴细胞 (LMPs) 衍生的特征MPs.
主要成果:
- 与对照人群相比,PLWH的各种细胞类型的循环MP数量显著更高.
- 虽然PMP和MMP的数量并不多,但它们的免疫调节表型不同.
- 来自PLWH的MP显示了关键免疫调节分子 (例如PDL1,ICOSL,CCR5,TGFβ1) 的表达增加.
结论:
- MPs参与细胞间通信和表型转移.
- 在PLWH中增加的免疫调节MP的数量可能有助于持续的免疫激活.
- 了解MP的功能对于管理PLWH的炎症性并发症至关重要.
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