调整B-CLL微环境:证据表明BAG3蛋白介导调节树突纤维细胞活动
Anna Basile1, Valentina Giudice2,3, Laura Mettivier3
1Department of Sanitary Hygiene and Evaluative Medicine U.O.C. Clinical and Microbiological Pathology, University Hospital "San Giovanni di Dio e Ruggi d'Aragona", Salerno, Italy.
Cell death discovery
|August 28, 2024
概括
流体纤维细胞中的Bcl2-关联的亚桑基-3 (BAG3) 蛋白促进B细胞慢性淋巴细胞白血病 (B-CLL) 的存活率. 沉默BAG3会破坏促生存信号和细胞因子网络,为CLL提供新的治疗点.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 与Bcl2相关的乙基-3 (BAG3) 对于细胞存活至关重要,也是恶性瘤的治疗点.
- BAG3维持胰腺星状细胞的激活和胰腺管道腺癌的扩散.
- BAG3在支持B细胞慢性淋巴细胞白血病 (B-CLL) 的骨髓 stromal 纤维细胞中的作用尚未被探索.
研究的目的:
- 研究BAG3在骨髓 stromal 纤维细胞中的作用.
- 确定BAG3与B细胞慢性淋巴细胞白血病 (B-CLL) 细胞的相互作用.
- 确定BAG3作为B-CLL中的潜在治疗点.
主要方法:
- 在使用siRNA的HS-5 stromal纤维细胞中,BAG3被静止.
- 与B-CLL患者的外周血液单核细胞 (PBMC) 进行了共同培养实验.
- 在骨髓样本中分析了BAG3表达.
主要成果:
- 在HS-5细胞中抑制BAG3会增加B-CLL细胞的亡.
- 在B-CLL细胞中BTK,AKT和ERK的酸化在BAG3沉默后减少.
- BAG3表达与增加的IL-10和CXCL12水平相关,这对B-CLL存活至关重要.
结论:
- 流体纤维细胞中的BAG3通过调节信号通路和细胞因子网络来支持B-CLL的存活.
- 纤维细胞激活蛋白 (FAP) 阳性细胞共同表达BAG3参与瘤存活.
- 向BAG3为B细胞慢性淋巴细胞白血病提供了潜在的治疗策略.
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