锁定和屏蔽策略使得稳定和刺激响应的瘤向基因传递成为可能
Siqin Chen1, Chongzhi Wu2, Dandan Wang1
1Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
Advanced materials (Deerfield Beach, Fla.)
|December 5, 2025
概括
一个新的锁定和屏蔽纳米输送系统保护核酸用于癌症基因治疗. 这个平台确保了高效的瘤细胞传递,强大的基因沉默和降低毒性,改善治疗结果.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症治疗方法 癌症治疗方法
背景情况:
- 有效的癌症基因疗法面临着核酸输送系统的挑战.
- 核酸容易降解,细胞吸收效率低下.
- 现有的载体具有诸如细胞毒性和瘤选择性差等局限性.
研究的目的:
- 开发一个强大的,适应性的平台,用于癌症治疗中的全身核酸输送.
- 创建一个保护核酸并确保高效,瘤选择性细胞内释放的输送系统.
- 在临床前癌症模型中评估新型输送系统的疗效和安全性.
主要方法:
- 使用混合膜外 (hMVs) 的氨酸Nanogel (Nanogel),称为Nanogel@hMVs的锁定和屏蔽策略的开发.
- 核酸 (DNAzyme,siRNA,ASO) 封装在纳米凝核心内,使用pH/redox响应链接器.
- 在稳定性,核酸负载,细胞吸收,基因沉默,以及体外/体内生物抗瘤活性方面对纳米凝@hMVs的表征.
主要成果:
- 纳米凝@hMVs表现出高核酸捕获效率 (81.6%-89.2%) 和30天的稳定性.
- 该系统实现了有效的细胞吸收,最小的溶酶体隔离和强大的基因沉默 (Survivin).
- 在体内研究表明,优选瘤积累,显著的瘤抑制和长期存活,没有可检测的毒性.
结论:
- 纳诺格尔@hMVs平台为癌症基因治疗中的全身核酸输送提供了一个强大的,安全的和可适应的解决方案.
- 这种锁定和盾牌策略克服了核酸输送的关键挑战,增强了治疗潜力.
- 该系统证明了对各种核酸类型的广泛适用性,并展现出有希望的临床前疗效和安全性.
相关概念视频
Targeted Cancer Therapies
8.6K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
8.6K
Gene Therapy
27.3K
Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
27.3K


