Poly(ester urea) Synthesis for Drug Delivery Complexation
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Solution Overview
Problem
Current poly(ester urea)s for drug delivery lack optimal water solubility and complexation efficiency, necessitating the development of novel amino acid and diol combinations to enhance their biocompatibility and effectiveness in forming nanoscale drug delivery particles.
Innovation Solution
The development of poly(ester urea)s with specific structures incorporating various amino acid monomers and diols, such as lysine, arginine, and diethylene glycol, to improve water solubility and complexation efficiency, allowing for the formation of polyplexes in the form of micelles, liquid polyplexes, or thin-film coatings for enhanced drug delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional poly(ester urea)s are used for drug delivery, then basic biocompatibility is achieved, but water solubility and complexation efficiency are insufficient
Solution Approach 1:
The patent modifies the chemical parameters of poly(ester urea)s by incorporating specific amino acid monomers (lysine, arginine, aspartic acid) and diol linkers (diethylene glycol, triethylene glycol) to optimize water solubility and complexation efficiency. This involves changing the compositional parameters of the polymer to achieve desired solubility and binding properties for drug delivery applications
Solution Approach 2:
The patent creates composite poly(ester urea) structures by combining multiple amino acid monomers and diol linkers in specific ratios. These composite materials integrate hydrophilic components (for solubility) with functional groups (for complexation), achieving both improved water solubility and enhanced drug complexation efficiency simultaneously
2Adaptability or versatility
If novel amino acid and diol combinations are developed to improve water solubility, then complexation efficiency increases, but material complexity and synthesis difficulty increase
Solution Approach 1:
The patent divides the poly(ester urea) structure into distinct functional segments: amino acid monomer units (providing solubility and complexation functionality) and diol linker units (providing structural flexibility and solubility). This segmentation allows independent optimization of each component's properties while maintaining overall polymer functionality
Solution Approach 2:
The patent employs universal building blocks (standard amino acids and common diols) that can be combined in various ratios to create multiple poly(ester urea) variants with different solubility and complexation profiles. This multi-functional approach allows a single set of monomers to serve multiple drug delivery applications by adjusting composition rather than designing entirely new polymers
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The optimized poly(ester urea)s enable improved complexation and delivery of therapeutic, diagnostic, and prophylactic agents, offering enhanced biocompatibility and tunable properties for fine-tuning drug delivery applications.
Implementation Method 1
Polyelectrolyte complexation has been demonstrated as an effective method for the formation of nanoscale drug delivery particles including micelles, polyplexes, and thin-film coatings.
Data Source
AI summary
Disclosed are poly(ester urea)s containing two or more units containing two amino acid monomers linked by a linker. At least two units of the poly(ester urea)s are covalently bonded via a urea bond. Suitable amino acid monomers are lysine, arginine, aspartic acid, phenylalanine, or a side chain protected derivative thereof, and suitable linkers are selected from a 1,4-butane diol group, a 1,6-hexane diol group, diethylene glycol group, a triethylene glycol group, or an N-methyl diethanolamine group. The poly(ester urea)s are used to form polyplexes for the improved complexation and delivery of drugs to a subject in need thereof.