Platelet Membrane-Coated Nanoparticles for Infection Treatment
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Solution Overview
Problem
Current methods for preventing and treating infections by platelet-targeting microbes are inadequate due to challenges in replicating complex biological interfaces and exposing foreign materials, leading to reduced nanoparticle effectiveness in physiological systems.
Innovation Solution
Development of nanoparticles with an inner core of non-cellular material and an outer surface comprising a cellular membrane derived from platelets, optionally combined with agents for prevention, treatment, diagnosis, or monitoring of infections, to mimic platelet properties and enhance immunocompatibility and pathogen binding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nanoparticles with foreign materials are used to prevent and treat infections, then nanoparticle effectiveness is reduced due to exposure of foreign materials and inability to replicate complex biological interfaces, but using cellular membranes derived from platelets increases immunocompatibility and pathogen binding
Solution Approach 1:
The patent applies the copying principle by coating nanoparticles with cellular membranes derived from platelets, creating a仿生 (bionic) surface that copies the natural platelet interface. This membrane coating allows the nanoparticle to present authentic biological surfaces (including platelet glycoproteins and other surface molecules) to the physiological environment, thereby replicating complex biological interfaces without exposing foreign materials. The copied platelet surface enables the nanoparticle to interact with pathogens and host cells as natural platelets would, improving both immunocompatibility and pathogen binding while resolving the contradiction between foreign material exposure and therapeutic effectiveness
Solution Approach 2:
The patent employs composite materials by combining inorganic or synthetic nanoparticle cores with organic cellular membrane coatings. This composite structure integrates the beneficial properties of both components: the nanoparticle core provides controlled drug delivery and stability, while the platelet-derived membrane provides biocompatibility and pathogen-targeting capabilities. The composite material approach allows the system to function as both a synthetic delivery vehicle and a biologically recognizable entity, resolving the contradiction between the need for foreign material stability and the need to avoid immunogenicity
2Ease of manufacture
If bottom-up nanoengineering and surface chemistry approaches are used, then nanoparticle manufacturing is simplified, but complex biological interfaces present in nature cannot be replicated
Solution Approach 1:
The patent merges two different approaches: bottom-up nanoparticle synthesis and top-down membrane isolation. The methodology combines controlled nanoparticle fabrication (bottom-up) with platelet membrane extraction and coating (top-down). This merging allows the simple manufacturing advantages of bottom-up approaches to be retained while incorporating the complex biological interfaces that are naturally present in platelet membranes. The combined approach resolves the contradiction by allowing complex biological structures to be transferred onto simply manufactured particle cores
3Reliability
If platelet membrane-derived nanoparticles are used to target pathogens, then binding to pathogens is enhanced, but device complexity increases due to membrane coating requirements
Solution Approach 1:
The patent applies segmentation by dividing the nanoparticle system into distinct functional modules: a core nanoparticle component for drug delivery and a separate membrane coating component for pathogen binding. This segmentation allows each component to be optimized independently - the core can be manufactured with standard nanoparticle techniques while the membrane coating provides the specific pathogen-binding functionality. The segmented structure resolves the contradiction by separating the complex pathogen-targeting function from the simpler drug delivery function, making the overall system more manageable despite the enhanced complexity of the membrane-coated structure
Data Source
AI summary
The present invention relates to prevention and/or treatment of infection by a platelet-targeting microbe in a subject. The present invention provides for methods, combinations and pharmaceutical compositions for preventing and/or treating (and/or related uses) infection by a platelet-targeting microbe in a subject, using, inter alia, an effective amount of a nanoparticle comprising a) an inner core comprising a non-cellular material, b) an outer surface comprising a cellular membrane derived from a platelet; and optionally c) an agent for preventing said infection, treating said infection, diagnosing said infection, prognosing said infection and/or monitoring prevention or treatment of said infection. Exemplary platelet-targeting infections include infections by a bacterium, a virus, a fungus and/or a parasite.