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乳腺癌细胞外囊泡对免疫细胞激活的影响:试点研究

Jessie Santoro¹, Barbara Carrese¹, Maria Sara Peluso¹

¹IRCCS SYNLAB SDN, Via E. Gianturco, 80143 Naples, Italy.

|December 22, 2023

概括

乳腺癌细胞中的细胞外囊泡 (EVs) 改变了免疫细胞. 这些癌细胞的EV激活了自然杀手 (NK) 细胞,同时减少了它们的数量和T调节细胞,可能导致瘤生长.

科学领域:

在瘤学瘤学.
免疫学免疫学免疫学
细胞生物学细胞生物学

背景情况:

乳腺癌显著改变了瘤微环境 (TME).
免疫细胞,包括自然杀手 (NK) 细胞,在乳腺癌的进展和抗瘤反应中发挥着关键作用.
细胞外囊泡 (EVs) 在调节乳腺癌TME中的作用是一个正在积极研究的领域.

研究的目的:

研究来自乳腺癌细胞系的细胞外囊泡 (EV) 对瘤微环境 (TME) 内的免疫细胞群的影响.
分析来自Luminal B (BT474) 和三阴性 (HS578T) 乳腺癌细胞的EV如何影响NK细胞和T调节细胞.

主要方法:

在2D和3D系统中培养的光B (BT474) 和三阴性 (HS578T) 乳腺癌细胞系.
从健康捐赠者中分离出来的外周血液单核细胞 (PBMCs).
用BT474和HS578T细胞衍生出EV的治疗PBMC和使用细胞化仪分析免疫细胞群.

主要成果:

来自BT474和HS578T细胞的EV诱导了激活和减少CD335+/CD11b+NK细胞的百分比.
来自BT474细胞的EV显著降低了CD39+T调节 (T-reg) 细胞的数量.
这些发现表明,EV可以调节TME内的免疫细胞组件.

结论:

来自乳腺癌细胞的细胞外囊泡 (EV) 可以改变免疫细胞的特征,包括NK细胞和T调节细胞.
由EVs观察到的免疫调节可能会导致瘤进展和侵略性生长.
这些初步数据强调了EV作为乳腺癌新诊断和治疗策略的目标的潜力,强调了TME分析的重要性.

关键词:

抗癌免疫力抗癌免疫力乳腺癌乳腺癌乳腺癌细胞外囊泡中的细胞外囊泡.创新的诊断方法创新的诊断方法.个性化医疗是个性化的医疗.球形状的球形体是指球形状的球体.瘤微环境是一个微环境.

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