CasP6 RNA-Guided Nucleases for Precise Nucleic Acid Detection
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Solution Overview
Problem
There is a need for alternative CRISPR/Cas nucleases with different properties to optimize performance in genome modification and diagnostic applications.
Innovation Solution
Development of RNA-guided endonuclease polypeptides (CasP6 proteins) and guide RNAs (CasP6 guide RNAs) that provide sequence specificity and can be used in nucleic acid detection systems, including CasP6 polypeptides, CasP6 guide RNAs, and RNA-based masking constructs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional CRISPR/Cas nucleases are used, then genome modification capability is achieved, but performance optimization is limited due to lack of alternative nucleases with different properties
Solution Approach 1:
The patent describes a unified CRISPR-Cas system architecture where a single Cas protein can perform multiple functions by combining different domains (e.g., CasP6 with RuvC domain for cleavage, CasX for recognition). This multi-functional design allows one nuclease system to replace what would traditionally require multiple specialized nucleases, improving adaptability without proportionally increasing complexity.
Solution Approach 2:
The patent employs modular domain structures within Cas proteins (e.g., separating recognition domains from cleavage domains like RuvC). These segmented functional modules can be independently optimized or recombined to create nucleases with specific properties for different applications, allowing performance optimization without requiring entirely different nuclease systems.
2Measurement precision
If RNA-based masking constructs are used in detection systems, then detection precision is improved, but system complexity increases
Solution Approach 1:
The patent introduces RNA-based masking constructs as intermediary molecules that temporarily bind to target sequences to prevent false detection or to enable stepwise detection protocols. These masking RNAs act as controllable mediators that can be added or removed to regulate detection specificity, improving precision while adding only a single reagent component to the system.
Solution Approach 2:
The masking constructs are designed to be applied in advance of final detection steps, pre-conditioning the sample by blocking non-specific binding sites or protecting sensitive regions. This preliminary action prevents detection errors before they occur, improving precision without requiring complex real-time control mechanisms during the detection process.
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 CasP6 proteins and guide RNAs enable site-specific nucleic acid modification and detection, offering improved precision and versatility in genome editing and diagnostic applications.
Implementation Method 1
RNA-guided endonuclease polypeptides, referred to herein as 'CasP6' polypeptides
Implementation Method 2
guide RNAs (referred to herein as 'CasP6 guide RNAs') that bind to and provide sequence specificity to the CasP6 proteins
Implementation Method 3
the CasP6 comprises endonuclease enzyme activity
Implementation Method 4
CasP6 polypeptides are useful in a variety of applications including... nucleic acid detection systems
Data Source
AI summary
Compositions and methods related to Cas proteins, nucleic acids encoding the Cas proteins, and modified host cells comprising the Cas proteins and/or encoding nucleic acids are disclosed. Cas proteins are useful in a variety of applications. Cas proteins bind guide RNAs that in turn provide functional specificity to the Cas proteins, nucleic acids encoding the Cas guide RNAs, and modified host cells comprising the Cas guide RNAs and/or encoding nucleic acids. The Cas polypeptides and corresponding guide RNAs can be used in a variety of applications.