由结合部位调节的异构型SN-38前药物的超分子组合
Zhenhai Tang1, Jianhua Zhang1, Wenting Li1
1College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China. hsu@scu.edu.cn.
Journal of materials chemistry. B
|June 6, 2024
概括
这项研究使用SN38原药设计了超分子聚合物 (SPs). 在体内,20-OEG-SN38异构体表现出优异的抗瘤效果和稳定性,而不是10-OEG-SN38异构体和阴素.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纳米技术纳米技术
背景情况:
- 超分子聚合物 (SPs) 是先进的药物输送系统.
- 自组装单体的理性设计优化了纳米结构的特性,以改善药物治疗.
研究的目的:
- 通过在不同位置与SN38结合Oligo (乙烯基醇) (OEG) 来设计异构SN38原药 (自组合原药,SAPD).
- 研究修改部位对SAPD组装,药物释放和抗瘤疗效的影响.
主要方法:
- 合成的异构体10-OEG-SN38和20-OEG-SN38前药物.
- 通过芳香联结,特征性自组装成纳米管和丝状结构.
- 在CT26瘤模型中评估了体外和体外抗瘤效应.
主要成果:
- 由于更强的π-π相互作用,20-OEG-SN38同位素形成了更紧的组件,而10-OEG-SN38则经历了固体阻碍.
- 20-OEG-SN38表现出增强的化学和超分子稳定性.
- 与体内10-OEG-SN38和静氨酸相比,20-OEG-SN38显示出优异的瘤生长抑制和延长存活时间.
结论:
- 修改部位显著影响SN38 SAPD组装行为,稳定性和药物释放.
- 20-OEG-SN38前药物代表了增强癌症治疗的有前途的超分子策略.
- 这项工作提供了设计有效的超分子药物递送系统的见解,通过设计自组装的构建块.
相关概念视频
Drug Metabolism: Phase II Reactions
3.8K
Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...
3.8K
Prodrugs
2.6K
Prodrugs are a class of pharmaceutical compounds that undergo a biotransformation process within the body to be converted into a pharmacologically active drug. Prodrugs are designed to improve the therapeutic properties of the parent drug, such as enhancing bioavailability, increasing stability, or reducing toxicity. The concept of prodrugs revolves around modifying the chemical structure of the original drug to make it more effective or convenient for administration.
Prodrugs help overcome...
Prodrugs help overcome...
2.6K
Phase II Conjugation Reactions: Overview
187
Conjugation, a key component of phase II biotransformation reactions, is a vital process in drug detoxification. It involves transferring endogenous substances like glucuronic acid, sulfate, and glycine to drugs or their metabolites formed in phase I reactions. These conjugation reactions, often catalyzed by specific enzymes, transform potentially harmful metabolites into inactive, water-soluble forms easily excreted in urine or bile. By enhancing polarity and eliminating pharmacological...
187
Phase II Reactions: Sulfation and Conjugation with α-Amino Acids
216
Sulfation and α-amino acid conjugation are two critical biotransformation reactions in drug metabolism. Sulfation, a phase II biotransformation reaction, involves adding a polar sulfate group to a drug, enhancing its water solubility and promoting excretion. This process can either co-occur with or occur independently of glucuronidation. Nonmicrosomal sulfotransferase enzymes catalyze the process. The reaction involves 3'-phosphoadenosine-5'-phosphosulfate or PAPS coenzyme...
216
SN2 Reaction: Stereochemistry
9.5K
In an SN2 reaction, the nucleophilic attack on the substrate and departure of the leaving group occurs simultaneously through a transition state. As the nucleophile approaches the substrate from the back-side, the configuration of the substrate carbon changes from tetrahedral to trigonal bipyramidal and then back to tetrahedral, leading to an inversion in the configuration of the product.
If the substrate is an achiral molecule at the α-carbon, the inversion of configuration is not...
If the substrate is an achiral molecule at the α-carbon, the inversion of configuration is not...
9.5K
Assembly of Signaling Complexes
5.7K
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
5.7K


