Linoleic Acid Complexes Inhibiting Coronavirus Spike Protein Binding
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Solution Overview
Problem
Current therapeutic interventions for SARS-CoV-2 are limited by the virus's high infectivity and pathogenicity, which is attributed to its unique receptor recognition and cell entry mechanisms, as well as dysregulated immune responses and inflammation, with a need for targeted therapies that inhibit the binding of the coronavirus spike protein to its receptor and modulate lipid metabolism.
Innovation Solution
Development of complexes comprising coronavirus spike proteins or fragments with linoleic acid or its derivatives, which bind to a specific pocket on the spike protein, potentially inhibiting receptor binding and lipid metabolome remodeling, and using these complexes to identify and develop small molecule or biologic drug candidates that target this interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If therapeutic interventions are developed to inhibit coronavirus spike protein-receptor binding, then virus infectivity is reduced, but the complexity of drug development increases due to the virus's unique cell entry mechanisms and dysregulated immune responses
Solution Approach 1:
The patent extracts the fatty acid binding pocket from the coronavirus spike protein structure and isolates this specific interaction site as a therapeutic target. By focusing on the fatty acid binding pocket rather than the entire spike protein-receptor interaction, the invention simplifies the therapeutic approach while maintaining effectiveness against virus infectivity
Solution Approach 2:
The patent introduces fatty acids and their derivatives as intermediary molecules that bind to the spike protein's fatty acid binding pocket. These intermediaries compete with viral lipids, blocking the spike protein's ability to facilitate membrane fusion and cell entry, thereby reducing infectivity through a targeted molecular mechanism
2Reliability
If fatty acid complexes are used to target the spike protein binding pocket, then receptor binding is inhibited, but the specificity of targeting requires precise molecular structure matching
Solution Approach 1:
The patent explores variations in fatty acid chain length, saturation, and functional groups to optimize binding affinity to the spike protein pocket. By systematically modifying these molecular parameters, the invention identifies optimal fatty acid derivatives that achieve high binding specificity while maintaining ease of synthesis and delivery
Solution Approach 2:
The patent develops composite fatty acid-spike protein complexes where the fatty acid component forms a stable complex with the protein's binding pocket. This composite structure leverages the natural affinity between fatty acids and the hydrophobic pocket, creating a targeted therapeutic agent that combines the simplicity of fatty acid chemistry with the specificity of protein-ligand recognition
3Reliability
If linoleic acid or its derivatives are administered to modulate lipid metabolism, then lipid metabolome remodeling is inhibited, but the delivery and bioavailability of fatty acids in aqueous environments is limited
Solution Approach 1:
The patent employs lipid vesicles or micellar structures as delivery vehicles for hydrophobic fatty acids. These flexible lipid assemblies solubilize fatty acids in aqueous biological environments, protecting them from degradation and facilitating their transport to target cells while maintaining the fatty acids' ability to bind to and modulate spike protein function
Solution Approach 2:
The patent utilizes the inherent amphipathic nature of fatty acids to enable self-assembly into delivery-compatible structures. The fatty acids spontaneously form micelles or incorporate into lipid membranes in physiological conditions, eliminating the need for complex external delivery systems while maintaining bioavailability and therapeutic efficacy
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 proposed solution effectively inhibits the binding of the coronavirus to its receptor and modulates lipid metabolism, offering a potential therapeutic approach to reduce the virus's infectivity and pathogenicity, and could stabilize cell signaling and membrane fluidity, thereby mitigating severe COVID-19 symptoms.
Implementation Method 1
complexes comprising coronavirus spike proteins or fragments with linoleic acid or its derivatives, which bind to a specific pocket on the spike protein
Data Source
AI summary
Complexes of coronavirus spike proteins, as well as fragments or mutants thereof wherein the fragment or mutant thereof at least contains a receptor binding domain of said coronavirus spike protein, with linoleic acid, or a derivative or a salt or a mimetic thereof. Methods for producing the complexes of the invention by incubating coronavirus spike proteins with linoleic acid or a derivative or a salt or a mimetic thereof. . In vitro methods for identifying molecules which have therapeutic potential for diseases caused by coronaviruses by contacting the molecule with a coronavirus spike protein and linoleic acid or a derivative or salt or mimetic thereof. A method of treatment of coronavirus infection by administration of linoleic acid, or a derivative, a salt or a mimetic thereof to a subject in need thereof, by administration of an aerosol formulation or dry powder formulation to the respiratory tract, preferably by nasal administration.