脂质体药物输送方面的进展:克服生物障碍的多方向视角
Żaneta Sobol1, Rafał Chiczewski1, Dorota Wątróbska-Świetlikowska1
1Department of Pharmaceutical Technology, Pomeranian Medical University in Szczecin, Rybacka 1, 70-204 Szczecin, Poland.
Pharmaceutics
|July 30, 2025
概括
脂质体是先进的药物递送系统,特别是用于癌症治疗,提高药物的有效性和减少副作用. 目前正在进行的研究重点是增强向和个性化医疗应用.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 药理学 药理学是指药理学的学科.
背景情况:
- 脂质体是药物输送中的关键纳米载体,因为它们具有独特的特性.
- 它们的配方,稳定性和向性已被广泛研究用于临床用途,特别是在瘤学中.
- 脂质体通过增强透性和保留 (EPR) 效应在瘤中积累,改善药物的药理动力学和降低毒性.
研究的目的:
- 审查用于药物输送的脂质体技术的进步.
- 突出脂质体在向癌症治疗中的作用.
- 讨论目前的趋势和脂质体研究的未来前景.
主要方法:
- 审查关于脂质体配方和应用的现有文献.
- 在瘤向中增强透性和保留 (EPR) 效应的分析.
- 讨论先进的脂质体工程技术,如PEGylation和基于带的向.
- 探索克服耐药性和控制释放的机制.
主要成果:
- 脂质体在癌症治疗中表现出改善的药理动力学和降低的全身毒性.
- 基化和带向性增强药物动力学概况和组织特异性.
- 脂质体可以绕过药物耐药性机制,并提供受控或刺激响应的释放.
- 脂质体在个性化医学和组合疗法方面表现有前途.
结论:
- 脂质体是多功能纳米载体,具有重要的临床应用,特别是在瘤学中.
- 工程脂质体提高了准效率,并最大限度地减少了非准效应.
- 未来的研究方向包括混合纳米载体,个性化药物和组合疗法,以提高治疗效果.
相关概念视频
01:24Cellular Membranes and Drug Transport
962
Drugs must traverse multiple biological barriers, such as multi-layered skin, single-layered intestinal epithelium, and the plasma membrane, to reach their target sites within the body. The plasma membrane, a highly structured composite of phospholipids, carbohydrates, and proteins, is the cell's protective boundary, facilitating selective substance exchange.
Phospholipids arrange themselves into a bilayer, with hydrophilic heads oriented outward and hydrophobic tails facing inward.
Phospholipids arrange themselves into a bilayer, with hydrophilic heads oriented outward and hydrophobic tails facing inward.
962
01:16Drug Delivery: Overview
426
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...
426
01:23Mechanisms of Drug Absorption: Paracellular, Transcellular, and Vesicular Transport
822
Drugs need to permeate cell membranes to reach their target sites after administration. Orally administered drugs must transcend intestinal epithelial membrane barriers to infiltrate the systemic circulation. Drugs with a molecular weight of less than 500 Daltons diffuse through gaps between neighboring cells, called paracellular pathways.
However, most drugs use the transcellular route, traversing directly through the cell membranes via two mechanisms: passive and active transport. Passive...
However, most drugs use the transcellular route, traversing directly through the cell membranes via two mechanisms: passive and active transport. Passive...
822
01:17Passive Diffusion: Overview and Kinetics
730
Passive diffusion is a critical process that allows small lipophilic drugs to cross the cell membrane along a concentration gradient. This mechanism's efficiency depends on four primary factors: the membrane's surface area, the drug's lipid-water partition coefficient, the concentration gradient, and the membrane's thickness.
When administered orally, drugs establish a substantial concentration gradient between the gastrointestinal (GI) lumen and the bloodstream, expediting...
When administered orally, drugs establish a substantial concentration gradient between the gastrointestinal (GI) lumen and the bloodstream, expediting...
730
01:20Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry
267
Orally administered drugs primarily enter the systemic circulation via passive diffusion through the intestinal membranes. The drug's absorption is influenced by drug stability in the gastrointestinal GI tract, membrane permeability, the surface area available for absorption, luminal drug concentration, and residence time in the lumen. Drug permeability can be enhanced by adjusting the lipophilicity, polarity, or molecular size of the drug, promoting its passive transport across intestinal...
267
01:06Carrier-Mediated Transport
549
Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
549