星星疗法:通过大小隔离的DNA水凝药物输送系统进行时空抗瘤疗法
Chengyu Feng1, Zhengyang Yang2, Yufei Lan3
1Department of Pediatric Hematology, Zhujiang Hospital, Southern Medical University, Guangzhou, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|February 5, 2026
概括
这项研究引入了一种新的药物递送系统,使用DNA水凝来顺序释放癌症药物. 这种方法提高了药物透率,并增强了光动力学治疗具有密集的细胞外基质的固体瘤.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 癌症治疗 癌症治疗
背景情况:
- 密的瘤细胞外基质 (ECM) 阻碍了传统的癌症药物输送.
- 现有的药物载体缺乏时空控制,导致非选择性同步释放.
- 需要先进的系统来顺序输送ECM调节剂和细胞毒药物.
研究的目的:
- 开发一个空间时空抗瘤疗法 (STAR),使用一个尺寸关闭的DNA超分子水凝 (DSH).
- 为了实现受控,顺序释放ECM调节剂和光动力学剂.
- 克服药物透和积累在固体瘤中的局限性.
主要方法:
- 在DSH中同时封装洛萨坦 (Los) 和绿色载荷的血小板模拟颗粒 (ICG/PLT) 的氨酸.
- 利用DSH的尺寸选择性来分化药物释放.
- 在瘤模型中评估顺序释放和治疗疗效.
主要成果:
- DSH 证明了尺寸调节的释放,允许 Los 首先重塑 ECM,其次是 ICG/PLT 释放.
- 这种顺序策略显著增强了瘤部位的ICG/PLT积累.
- 优越的光激活光动力学疗法对抗瘤的结果得到了实现.
结论:
- 建立了一个基于大小限制的DSH的新型STAR范式.
- 该系统提供可控制的,顺序的药物输送,以克服ECM障碍.
- DSH有望在密集ECM的固体瘤中推进癌症治疗.
相关概念视频
01:15Drug Dosage Regimen: Overview
4.5K
A drug dosage regimen describes the specific instructions and schedule for administering a drug to a patient. It considers factors such as drug dosage, frequency, route of administration, and duration of treatment. Designing an appropriate dosage regimen for a patient aims to achieve a target drug concentration at the site of action.
Typically, the starting dose and dosing interval are guided by the manufacturer's recommendations based on clinical trials conducted during and after drug...
Typically, the starting dose and dosing interval are guided by the manufacturer's recommendations based on clinical trials conducted during and after drug...
4.5K
01:28Drug Therapy
301
The advent of drug therapy has profoundly shaped modern mental health care, providing targeted treatments for a range of psychological disorders. Psychotherapeutic drugs, classified into antianxiety, antidepressant, and antipsychotic medications, address symptoms across anxiety disorders, mood disorders, and schizophrenia. While these medications have transformed patient outcomes, they require careful management due to their potential side effects and limitations.
Antianxiety Medications
Antianxiety Medications
301
01:16Drug Delivery: Overview
879
The selection of a drug's delivery route depends upon its physicochemical properties, including lipid or water solubility and ionization, as well as the therapeutic requirement, such as immediate or sustained effect. These routes can be divided into three primary categories: enteral, parenteral, and topical.
Enteral delivery involves administering drugs directly through swallowing, sublingual placement, or buccal application. Orally administered drugs predominantly navigate the...
Enteral delivery involves administering drugs directly through swallowing, sublingual placement, or buccal application. Orally administered drugs predominantly navigate the...
879
01:18Drug Delivery: Enteral Route
1.8K
The enteral drug administration involves three primary routes: oral, sublingual, and buccal. Oral ingestion is the most prevalent, safe, economical, and convenient method for drug administration. However, it has certain drawbacks, including limited absorption due to the drug's low water solubility or poor membrane permeability, possible emesis from GI mucosa irritation, destruction of drugs by digestive enzymes or low gastric pH, and irregular absorption along with food or other drugs.
1.8K
01:29Drug Delivery: Parenteral Route
1.7K
The parenteral route is a critical method of drug administration. It delivers compounds directly into the systemic circulation and bypasses the gastrointestinal tract. This approach is particularly advantageous for drugs that exhibit poor absorption or instability when administered orally.
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
1.7K
01:22Drug Delivery: Miscellaneous Routes
833
Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection, and rectal administration provide localized effects with reduced toxicity.
Oral inhalation and nasal sprays swiftly transfer drugs across the respiratory epithelium's mucosal layer. Inhaled glucocorticoids and bronchodilators directly target lung conditions such as asthma, while fluticasone nasal spray mitigates allergic rhinitis.
Transdermal patches transport drugs...
Oral inhalation and nasal sprays swiftly transfer drugs across the respiratory epithelium's mucosal layer. Inhaled glucocorticoids and bronchodilators directly target lung conditions such as asthma, while fluticasone nasal spray mitigates allergic rhinitis.
Transdermal patches transport drugs...
833