通过ICAM1,EVs和瘤细胞之间的粘附促进了EV封装的多克索鲁比辛通过ICAM1传递
Shibo Wang1, Chenxiao Qiao2, Xianghui Kong2
1Institute of Immunology and Department of Orthopaedics of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China; Institute of Immunology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China; Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou 310006, China.
Pharmacological research
|May 31, 2024
概括
细胞外囊泡 (EVs) 通过允许直接进入细胞质,提高疗效和降低心脏毒性来增强抗瘤药物多克索鲁比 (Dox) 的输送. 电动汽车使用独特的"接吻和运行"机制,提高了Dox进口效率.
科学领域:
- 生物医学工程 生物医学工程
- 药物输送系统 药物输送系统
- 癌症治疗 癌症治疗
背景情况:
- 多克索鲁比 (Dox) 是一种强效的抗瘤药物,但其临床使用因心脏毒性而受到限制.
- 脂质体目前用于减轻Dox心脏毒性.
- 细胞外囊泡 (EVs) 为Dox.提供了一种新的替代输送载体.
研究的目的:
- 通过使用电动汽车调查Dox传递的机制.
- 为了比较EV封装的Dox与自由的Dox的疗效和安全性.
- 为了确定调节EV介导Dox进口的分子相互作用.
主要方法:
- 将Dox封装成电动汽车.
- 在体外和体内研究以评估抗瘤作用和进口效率.
- 对EV细胞膜相互作用动态的研究.
- 确定参与EV粘附的细胞表面分子.
主要成果:
- 在体外和体内,EV显著提高了Dox进口效率和抗瘤活性.
- 装有Dox的电动汽车表现出独特的"亲吻和跑步"入口模式,促进了直接的细胞质Dox释放.
- 对于Dox进口来说,EV细胞膜粘附,而不是完全内部化,是至关重要的.
- ICAM1调解了EV细胞粘附,其表达在瘤微环境 (TME) 中由Dox载荷的EV升级调节.
结论:
- EVs代表了Dox的卓越传递系统,克服了脂质体的局限性.
- "亲吻逃跑"机制和ICAM1介导的向增强了Dox的抗瘤疗效.
- EV封装的Dox显示出协同效应,改善瘤治疗结果.
相关概念视频
Cancer Cell Migration through Invadopodia
2.3K
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
2.3K
Metastasis
5.5K
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
5.5K
Tumor Immunotherapy
514
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.
514
Vesicular Tubular Clusters
2.5K
After budding out from the ER membrane, some COPII vesicles lose their coat and fuse with one another to form larger vesicles and interconnected tubules called vesicular tubular clusters or VTCs. These clusters constitute a compartment at the ER-Golgi interface known as ERGIC (Endoplasmic Reticulum Golgi Intermediate Compartment). The ERGIC is a mobile membrane-bound cargo transport system that sorts proteins secreted from ER and delivers them to the Golgi.
With the help of motor proteins such...
With the help of motor proteins such...
2.5K
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


