Cationic Nanoparticles Enhance Viral Infectious Capacity
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Solution Overview
Problem
Modified viruses used in virotherapy have a restricted infectious capacity, requiring large quantities for therapeutic effects, and existing methods to enhance their potency are limited by factors like serum inhibition and the need for magnetic fields.
Innovation Solution
Combining cationic nanoparticles with live viruses, particularly non-enveloped viruses, to enhance their infectious capacity by improving endocytosis and escape from endocytic vesicles, allowing for lower viral concentrations to achieve therapeutic effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If modified viruses are used for virotherapy, then therapeutic applications can be achieved, but infectious capacity is restricted requiring large quantities
Solution Approach 1:
The patent changes the surface charge parameter of the virus by coating with cationic nanoparticles, transforming the viral surface properties to enhance cellular interaction and endocytosis, thereby increasing infectious capacity without changing the viral genetic material
Solution Approach 2:
The patent creates a composite structure by coating viruses with cationic nanoparticles, combining the biological functionality of the virus with the surface properties of the nanoparticles to achieve enhanced cellular uptake and infectious capacity
2Reliability
If magnetic nanoparticles are used to enhance viral potency, then oncolytic effectiveness is improved, but application is limited by requirement of magnetic field
Solution Approach 1:
The patent extracts the magnetic field dependency from the system by replacing magnetic nanoparticles with cationic nanoparticles, retaining the viral enhancement function while eliminating the constraint of requiring external magnetic field application
Solution Approach 2:
The patent uses cationic nanoparticles as an intermediary between the virus and the cell surface, mediating enhanced cellular uptake through electrostatic interactions without requiring external field application like magnetic nanoparticles
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 combination of cationic nanoparticles with live viruses increases their infectious capacity by 10- to 1000-fold, improving viral production yields and stability, enabling effective therapeutic applications with reduced viral loads.
Implementation Method 1
The present inventors believe that nanoparticles enhance the infectious capacity of viruses by improving their endocytosis and/or by improving their capacity to escape from endocytic vesicles.
Implementation Method 2
The present inventors believe that nanoparticles enhance the infectious capacity of viruses by improving their endocytosis and/or by improving their capacity to escape from endocytic vesicles.
Data Source
AI summary
The present invention relates to a combination of cationic nanoparticles and viruses and uses thereof. The invention particularly relates to the use of nanoparticles for enhancing the infectious capacity of a live virus, preferably a non-enveloped live virus.