作为多克索鲁比的药物输送系统,应用基于氨酸的氧反应性器官凝
Diba Zare1, Gamze Yılmaz1, Salih Özçubukçu1
1Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey.
ACS omega
|January 20, 2025
概括
由氨酸衍生物制成的对氧化还原反应有机体,在对谷氨 (GSH) 的反应中释放药物. 这表明使用这些GSH响应性药物递送系统有针对性癌症治疗的潜力.
科学领域:
- 生物材料科学 生物材料科学
- 药物输送系统 药物输送系统
- 癌症治疗 癌症治疗
背景情况:
- 带有二硫化键的氨酸衍生物作为氧化还原反应器官受体.
- 癌细胞中的高谷氨水平使得向药物可被提供.
- 谷氨 (GSH) 是细胞氧化还原平衡中至关重要的三.
研究的目的:
- 为了研究l-Cys(t-dodecyl-sulfanyl) -OH和l-Cys-(StBu) -OH基有机凝的药物传递能力.
- 为了评估这些器官凝的GSH反应性药物释放特性.
- 评估体外生物相容性,并描述器官受体器官的纳米结构.
主要方法:
- 使用TEM,XRD,FTIR和风湿学进行器官凝形成和表征.
- 在谷氨 (GSH) 的存在下进行药物释放研究.
- 在L929细胞上使用MTT试验进行体外细胞毒性评估.
主要成果:
- 机体凝器通过键和范德瓦尔斯相互作用形成纳米纤维.
- 在GSH的存在下,多克索鲁比成功地从器官凝中释放出来.
- l-Cys-(StBu) -OH没有显著的毒性,而l-Cys(t-dodecyl-sulfanyl) -OH对L929细胞的毒性较低.
结论:
- 基于氨酸的有机凝是有效的氧化还原反应药物递送系统.
- 由于GSH的响应性,这些器官凝显示出针对性癌症治疗的潜力.
- 开发的器官凝聚器表现出适用于生物医学应用的良好生物相容性.
相关概念视频
Modified-Release Drug Delivery Systems: Overview
Modified-release dosage forms are designed to address the limitations of drugs with short biological half-lives. These forms maintain stable therapeutic drug concentrations over extended periods, reducing the need for frequent dosing. A consistent drug level helps minimize peak-trough fluctuations, which can reduce adverse effects, lower the risk of drug resistance, and improve overall treatment effectiveness.One common type of modified-release form is the extended-release (ER) formulation. ER...
Modified-Release Drug Delivery Systems: Classification
Modified-release drug delivery systems improve drug efficacy and minimize side effects by controlling the rate and location of drug release. These systems fall into three categories: rate-programmed, stimuli-activated, and site-targeted.Rate-programmed systems release drugs at a predetermined rate, maintaining consistent therapeutic levels and reducing fluctuations that could lead to toxicity or subtherapeutic effects. These systems use polymeric matrices, reservoir-based designs, or osmotic...
Modified-Release Drug Delivery Systems: Rate-Programmed I
Rate-programmed drug delivery systems (DDS) are designed to release drugs at specific, controlled rates to maintain consistent therapeutic levels. These systems are categorized based on their release mechanisms, including dissolution-controlled DDS, diffusion-controlled DDS, and combined dissolution-diffusion-controlled DDS.In dissolution-controlled DDS, the release rate depends on the slow dissolution of the drug itself or the surrounding matrix. Drugs with inherently slow dissolution rates,...
Modified-Release Drug Delivery Systems: Stimuli-Activated
Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also called...
Modified-Release Drug Delivery Systems: Site-Targeted
Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
Site-Targeted Drug Delivery Systems: Polymeric Carriers
Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...


