相关实验视频

Updated: Jul 1, 2025

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo

Published on: January 7, 2019

针对淋巴细胞的高密度脂蛋白仿真纳米疫苗用于多抗原个性化癌症免疫治疗

Mingqi Liu¹, Yang Feng¹, Yougong Lu¹

¹State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and Jiangsu Key Laboratory of Drug Design and Optimization, Center of Advanced Pharmaceuticals and Biomaterials, School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China.

Science advances

|March 13, 2024

概括

这项研究引入了一种模仿HDL的纳米疫苗,通过改善细胞毒性T淋巴细胞 (CTL) 反应来增强抗癌免疫力. 这种新型纳米疫苗在抑制瘤生长和提高免疫疗法的有效性方面表现有前途.

科学领域:

免疫学免疫学免疫学
纳米技术纳米技术
在瘤学瘤学.

背景情况:

癌症疫苗由于免疫反应较弱,特别是细胞毒性T淋巴细胞 (CTL) 激活不足,具有潜在但有限的疗效.
高密度脂蛋白 (HDL) 具有独特的特性和生物功能,可用于疫苗开发.

研究的目的:

开发一种模仿高密度胆固醇的纳米疫苗,以改善癌症的预防和治疗.
调查纳米疫苗的淋巴细胞向能力及其引起强大的抗瘤免疫力的能力.

主要方法:

创造一种与癌症细胞膜 (含有瘤相关抗原) 和免疫辅助剂共载的脂质纳米粒子.
对纳米疫苗的淋巴细胞向效率和树突细胞吸收的评估.
在小鼠模型中评估CTL反应,瘤抑制和结合检查点抑制剂的治疗疗效.

主要成果:

优化的纳米疫苗证明了有效的淋巴细胞向和树突细胞吸收.
将抗原和辅助剂同时传递给淋巴结,从而增强了抗原呈现.
在淋巴细胞器官和瘤组织中观察到CTL频率的显著升高,导致瘤生长抑制.
纳米疫苗增强了检查点抑制剂的治疗效果,特别是在高干度黑色素瘤模型中.

结论:

模仿HDL的纳米疫苗可以通过增强CTL反应来克服传统癌症疫苗的局限性.
这种纳米疫苗策略显示出癌症预防,治疗和组合治疗的巨大潜力,特别是针对黑色素瘤等具有挑战性的癌症.

更多相关视频

Whole-animal Imaging and Flow Cytometric Techniques for Analysis of Antigen-specific CD8+ T Cell Responses after Nanoparticle Vaccination

Whole-animal Imaging and Flow Cytometric Techniques for Analysis of Antigen-specific CD8+ T Cell Responses after Nanoparticle Vaccination

Published on: April 29, 2015

Polymalic Acid-based Nano Biopolymers for Targeting of Multiple Tumor Markers: An Opportunity for Personalized Medicine?

Polymalic Acid-based Nano Biopolymers for Targeting of Multiple Tumor Markers: An Opportunity for Personalized Medicine?

Published on: June 13, 2014

相关概念视频

Tumor Immunotherapy

Tumor Immunotherapy

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.

Cancer Vaccines

Cancer Vaccines

Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...

Combination Therapies and Personalized Medicine

Combination Therapies and Personalized Medicine

Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...