细胞的外源性非编码的dsDNA-依赖的转激活增强了抗瘤免疫力
Tiphaine Delaunay1, Sehee Son1, Seongji Park1
1Department of Cell Biology, Sylvester Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA.
在癌细胞中使用重组病毒或dsDNA纳米粒子重建STING信号,可以增强抗瘤活性. 这种方法为癌症治疗提供了新的策略,改善了免疫治疗和放射治疗的疗效.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 在瘤学瘤学.
背景情况:
- 干扰素基因刺激器 (STING) 信号传递对于抗微生物和抗瘤免疫是至关重要的.
- 癌细胞经常通过表现出缺陷的STING信号来逃避免疫监测.
- 恢复STING通路的功能是对抗癌症的潜在治疗策略.
研究的目的:
- 调查复合性简单疹病毒 (rHSVs) 表达STING通路组件是否可以恢复癌细胞中的内在STING信号.
- 评估这些rHSV的抗瘤疗效.
- 探索使用dsDNA纳米粒子来激活用于癌症治疗的STING信号的替代策略.
主要方法:
- 创建用于表达STING和/或cGAS的工程rHSV.
- 评估rHSV复制效率和体内抗瘤活性.
- 通过纳米粒子给非编码的dsDNA物种,以激活细胞中的STING信号传递.
- 评估纳米粒子介导的STING激活与已确定的癌症疗法结合使用.
主要成果:
- 表达STING和/或cGAS的rHSV表现出低效的复制,但在体内保留了显著的抗瘤活性.
- rHSV的抗瘤作用与细胞中的瘤活性和外部STING信号独立.
- 提供非编码dsDNA的纳米颗粒有效地激活了细胞,模仿病毒疗法的效果.
- dsDNA纳米粒子增加了检查点抑制和放射治疗在癌症治疗中的有效性.
结论:
- 通过rHSV或dsDNA纳米粒子恢复内在的STING信号传递可以赋予抗瘤活性.
- 病毒治疗的抗瘤机制可以通过dsDNA纳米颗粒模拟,提供替代治疗策略.
- 这项研究提供了对病毒治疗机制的见解,并提出了提高癌症治疗疗效的新方法.
更多相关视频
08:19Transfer of Manipulated Tumor-associated Neutrophils into Tumor-Bearing Mice to Study their Angiogenic Potential In Vivo
Published on: July 20, 2019
07:44Studying the Effects of Tumor-Secreted Paracrine Ligands on Macrophage Activation using Co-Culture with Permeable Membrane Supports
Published on: November 28, 2019
相关概念视频
Immune Surveillance by NK Cells and Phagocytes
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Tumor Immunotherapy
The Extrinsic Apoptotic Pathway
Cells of the Innate Immune Response
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Cytotoxic T Cells-mediated Immune Response
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon...
