Acid-Responsive Polymeric Nanoparticles for Endosomal GPCR Delivery
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Solution Overview
Problem
Current methods for modulating endosomal GPCR signaling lack effective delivery mechanisms for hydrophobic modulators to the endosomal lumen, limiting therapeutic options for diseases mediated by these receptors.
Innovation Solution
Development of polymeric nanoparticles with an acid-responsive hydrophobic core and hydrophilic shell, containing hydrophobic modulators of endosomal GPCR signaling, which disassemble in acidic environments to release the modulators within the endosomal lumen, allowing targeted interaction with endocytosed receptors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrophobic modulators are used to target endosomal GPCRs, then therapeutic efficacy is improved, but delivery to the endosomal lumen is insufficient
Solution Approach 1:
The patent uses polymeric nanoparticles as an intermediary delivery vehicle to transport hydrophobic modulators through the aqueous cellular environment and into the endosomal lumen. The nanoparticles have a hydrophobic core that encapsulates the modulator and a hydrophilic shell that enables circulation and cellular uptake, solving the delivery problem while maintaining therapeutic efficacy
Solution Approach 2:
The patent employs pH-responsive polymer blocks that change their conformation and solubility properties in response to pH changes. The polymer is hydrophobic at physiological pH for stable encapsulation but becomes hydrophilic in the acidic endosomal environment, triggering nanoparticle disassembly and modulator release at the target site
2Adaptability or versatility
If pH-responsive polymers are used for targeted delivery, then specificity to endosomes is improved, but nanoparticle stability in circulation is compromised
Solution Approach 1:
The patent creates a nanoparticle with spatially differentiated properties: the core remains hydrophobic and stable at physiological pH for protected transport, while the shell contains pH-responsive blocks that only become hydrophilic in the acidic endosomal environment. This local quality differentiation allows simultaneous stability in circulation and specificity at the target
Solution Approach 2:
The nanoparticle structure is designed to be dynamic rather than static. The pH-responsive polymer blocks can reversibly change their conformation and interaction properties in response to environmental pH changes, allowing the nanoparticle to maintain stability under physiological conditions and undergo controlled disassembly in acidic environments
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 nanoparticles enable efficient delivery and interaction of hydrophobic modulators with endosomal GPCRs, providing effective treatment for various diseases mediated by endosomal signaling, including pain and inflammatory disorders, with minimal interference with cellular processes.
Implementation Method 1
an acid-responsive hydrophobic polymer block that forms the core of the nanoparticles, wherein the acid-responsive hydrophobic polymer block comprises tertiary amine functional groups that are protonated in an acidic environment
Implementation Method 2
the copolymer chains disassemble and release the hydrophobic modulator of endosomal GPCR signaling into the endosome
Implementation Method 3
the nanoparticles enable efficient delivery and interaction of hydrophobic modulators with endosomal GPCRs
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 2A
AI summary
The present invention relates to methods for modulating endosomal GPCR signaling. In particular, the present invention relates to use of polymeric nanoparticles for the targeted delivery of hydrophobic modulators of endosomal GPCRs and their use in the treatment of associated diseases and disorder.