RNA Nanostructures for Viral Replication via RdRp
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Solution Overview
Problem
Current methods for developing vaccines and treatments against viral infections, particularly RNA viruses, are inadequate due to limitations in RNAi therapies, defective interfering RNA, antibodies, and vaccines, which face challenges in replication, packaging, and immune recognition, leading to inefficiencies and resistance issues.
Innovation Solution
The development of novel single-stranded RNA nanostructures with tandem repeat secondary structures and subgenomic transcription promoting sequences, capable of replication and packaging in the presence of RdRp or RdRp-like proteins, which can induce gene modulation and subviral events, enhancing RNAi activity and immune stimulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RNAi therapies and defective interfering RNA are used to treat viral infections, then gene modulation and antiviral effects are achieved, but replication and packaging efficiency are insufficient
Solution Approach 1:
The RNA nanostructures contain self-complementary sequences that enable them to serve as both template and primer for RdRp-mediated replication, allowing the system to replicate itself without requiring external helper components
Solution Approach 2:
The patent modifies the RNA structure by incorporating tandem repeat secondary structures and subgenomic transcription promoting sequences, which fundamentally changes the replication parameters and enables efficient amplification by RdRp
2Reliability
If antibodies and vaccines are used against viral infections, then immune recognition is achieved, but resistance issues and inefficiencies occur
Solution Approach 1:
The RNA nanostructures are replicated multiple times by RdRp to generate numerous copies that can simultaneously engage immune receptors, amplifying the immune recognition signal while maintaining consistent antigenic properties
Solution Approach 2:
The patent designs RNA nanostructures that can target multiple viral components simultaneously through different sequence regions, enabling broad-spectrum activity against various viral strains and reducing resistance development
3Productivity
If RNA nanostructures with tandem repeat secondary structures are used, then RNA activity is amplified, but structural complexity increases
Solution Approach 1:
The RNA nanostructure is divided into modular functional regions including tandem repeat secondary structures for amplification, subgenomic transcription promoting sequences for regulated expression, and target-specific sequences, allowing independent optimization of each module
Solution Approach 2:
The patent incorporates nested structural elements where secondary structures are embedded within the overall RNA fold, and subgenomic transcription regions are nested within the full-length RNA template, enabling hierarchical organization of complex functions
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
These RNA nanostructures significantly amplify RNA activity, promote subgenomic transcription, and facilitate efficient packaging, leading to potent gene modulation and antiviral effects, offering a novel approach for treating viral infections and potentially reducing viral replication and transmission.
Implementation Method 1
RNA-dependent RNA polymerases (RdRps), also called RNA replicases, is an enzyme that catalyzes the synthesis of RNA from an RNA template
Implementation Method 2
the RNA is able to act as a template for complementary RNA synthesis
Data Source
AI summary
The present invention is directed to methods and compositions of RNA nanostructures for replication and/or subgenomic expression of gene modulating single-stranded RNA by RNA-directed RNA polymerase-like proteins and the use of such nanostructures for use in a variety of organisms.