经A1重编程的介酶体 stromal 细胞主要有强大的抗瘤反应
Marina Pereira Gonçalves1, Roudy Farah2, Jean-Pierre Bikorimana2
1Molecular Biology Program, Université de Montréal, Montreal, QC, Canada.
iScience
|March 4, 2024
概括
研究人员使用一种新型分子 (A1) 设计了介质细胞 stromal 细胞 (MSCs),制造出强效的抗癌疫苗. 这些A1重编程的MSC (ARM) 在小鼠模型中显示出显著的瘤回归,特别是在免疫检查点抑制剂下.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
背景情况:
- 介质细胞 stromal 细胞 (MSCs) 正在探索其在免疫治疗中的潜力.
- 工程MSC作为抗原呈现细胞可以增强抗瘤免疫反应.
- 开发有效的细胞疫苗需要优化抗原呈现和免疫细胞启动.
研究的目的:
- 确定一种能够将MSC重编程为有效的抗原呈现细胞的分子.
- 调查所识别的分子增强MSC功能的机制.
- 评估工程MSCs作为抗癌细胞疫苗的治疗疗效.
主要方法:
- 对Accum分子的变体库进行选,以识别功能变体.
- 通过选择的分子 (A1) 重编程MSC,以生成A1重编程的MSC (ARM).
- 评估ARM的抗原吸收,加工,交叉呈现和细胞因子分泌.
- 评估基于ARM的细胞疫苗在淋巴瘤和黑色素瘤的小鼠模型中的疗效,包括与抗PD-1的联合治疗.
主要成果:
- 确定了一种特定的Accum分子变体 (A1),使MSCs能够引起抗原交叉呈现.
- 经A1重编程的MSCs (ARM) 显示增强了可溶性抗原的吸收,处理和内分体逃逸.
- 在ARM中,反应性氧物种的产生和细胞因子分泌的概况发生变化.
- 基于ARM的疫苗在临床前癌症模型中表现出显著的治疗效能,特别是在异构环境中以及与抗PD-1疗法相结合时.
结论:
- 该研究确定A1是将MSC重编程成强大的抗原呈现细胞的关键分子.
- ARM细胞代表了开发可适应的抗癌疫苗的有希望的平台.
- 将ARM疫苗与免疫检查点抑制剂结合在一起,为瘤回归提供了一种协同的方法.
更多相关视频
10:57Using Human Induced Pluripotent Stem Cells for the Generation of Tumor Antigen-specific T Cells
Published on: October 24, 2019
10.4K
10:44A Three-dimensional Thymic Culture System to Generate Murine Induced Pluripotent Stem Cell-derived Tumor Antigen-specific Thymic Emigrants
Published on: August 9, 2019
7.2K
相关概念视频
Mesenchymal Stem Cells
4.7K
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
4.7K
Stem Cell Therapy for Tissue Regeneration
4.0K
Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell...
Types of Stem Cells used in Stem Cell Therapy
The two main cell...
4.0K
Tumor Immunotherapy
524
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.
524
