一种机械免疫检查点抑制剂可以使瘤细胞变硬,从而增强抗瘤免疫力
Yu Zhao1,2, Xiaoxue Hou3, Zeyu Wang4
1Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, 14853, United States.
Angewandte Chemie (International ed. in English)
|October 14, 2024
概括
瘤细胞在进展过程中变软. 一种新的机械免疫检查点抑制剂 (MICI) 强化瘤细胞,增强淋巴细胞的攻击并提高癌症免疫疗法的有效性.
科学领域:
- 生物物理学的生物物理.
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
背景情况:
- 瘤进展与瘤细胞刚度的降低有关,使它们不太容易受到免疫攻击.
- 瘤细胞膜中胆固醇的升高有助于它们的柔软.
- 准瘤细胞机制提供了一个新的治疗策略.
研究的目的:
- 开发和评估一种用于增强抗瘤免疫力的机械免疫检查点抑制剂 (MICI).
- 为了研究调节瘤细胞硬度对淋巴细胞激活的影响.
- 探索MICI与现有免疫疗法的组合.
主要方法:
- 使用环极素 (CD) 脂质和融合性脂质的MICI配方.
- 通过脂质体介导的CD脂质的输送与瘤细胞膜融合.
- 在小鼠模型中评估瘤细胞刚性,淋巴细胞激活 (NK和T细胞) 和抗瘤功效.
- 分析瘤细胞膜中的胆固醇含量.
主要成果:
- MICI治疗降低了瘤细胞膜胆固醇,导致细胞硬度增加.
- 硬化的瘤细胞表现出增强的淋巴细胞激活,包括脱粒和细胞因子的产生.
- 在乳腺癌和黑色素瘤小鼠模型中,MICI治疗提高了抗瘤功效,特别是与免疫疗法结合使用时.
- 该机制涉及直接调节瘤细胞刚性的影响淋巴细胞激活.
结论:
- 通过MICI调节瘤细胞机制是克服免疫逃避的可行策略.
- 准瘤细胞的机械性质可以增强淋巴细胞介导的抗瘤反应.
- 这项研究突出了调节免疫细胞激活和抗瘤免疫的新机械维度.
更多相关视频
09:01Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
Published on: March 7, 2025
297
07:44Studying the Effects of Tumor-Secreted Paracrine Ligands on Macrophage Activation using Co-Culture with Permeable Membrane Supports
Published on: November 28, 2019
7.5K
相关概念视频
Tumor Immunotherapy
488
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
488
The Tumor Microenvironment
6.6K
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
6.6K
Cell-matrix's Response to Mechanical Forces
2.6K
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...
2.6K
