SNAPicillin Nitric Oxide Release Agent for Biofilm Dispersal
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Solution Overview
Problem
Current treatments for biofilm-related infections on implanted medical devices are ineffective due to the limited permeability of antibiotics through the biofilm matrix, leading to chronic inflammation and tissue damage, with a scarcity of potent and efficacious compounds to combat and prevent biofilm formation.
Innovation Solution
Development of modified antibiotic compounds with a nitric oxide release agent covalently attached to an antibiotic molecule, such as SNAPicillin, which combines the antimicrobial properties of ampicillin with sustained nitric oxide release, enhancing the dispersal of biofilms into a planktonic state and increasing susceptibility to antibiotics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If antibiotics are administered at high concentrations to treat biofilm infections, then the antibiotic dosage is increased, but the effectiveness remains low due to limited permeability through the biofilm matrix
Solution Approach 1:
The patent combines nitric oxide release agents with antibiotic molecules to create a dual-functional compound. The nitric oxide component disperses the biofilm matrix while the antibiotic component kills bacteria, achieving both biofilm penetration and bacterial eradication in a single agent that overcomes the permeability limitation
Solution Approach 2:
The invention creates a composite molecular structure where a nitric oxide releasing moiety is covalently attached to an antibiotic molecule. This composite structure enables the antibiotic to both disrupt the biofilm matrix through nitric oxide release and maintain its bactericidal activity, thereby improving treatment effectiveness without relying on high concentrations
2Device complexity
If conventional antibiotics are used to combat biofilms, then the treatment approach is simple, but the ability to eradicate biofilm formation is insufficient
Solution Approach 1:
The patent merges two therapeutic functions (biofilm dispersal and bacterial killing) into a single molecular entity. The nitric oxide release agent component handles biofilm matrix disruption while the antibiotic component eliminates bacteria, providing a comprehensive solution that maintains relative simplicity while dramatically improving eradication capability
Solution Approach 2:
The modified antibiotic compound serves multiple functions simultaneously: it acts as an antibiotic to kill bacteria, a nitric oxide donor to disperse biofilm matrix, and a biofilm penetration agent. This multi-functionality allows a single compound to address all aspects of biofilm infection without requiring complex combination therapies
3Duration of action of stationary object
If antibiotics are administered continuously to prevent biofilm formation, then the treatment duration is extended, but the development of resistance and tissue damage increases
Solution Approach 1:
The nitric oxide releasing component provides periodic pulses of nitric oxide that disrupt biofilm formation at critical moments rather than requiring continuous antibiotic exposure. This periodic action reduces overall treatment duration and minimizes the selection pressure that leads to resistance development while preventing tissue damage associated with prolonged high-dose antibiotic therapy
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 modified antibiotic compound, SNAPicillin, demonstrates a significant reduction in biofilm viability and planktonic bacteria, with a 99.9% reduction in adhered biofilm bacteria and 99.5% reduction in planktonic bacteria, while maintaining prolonged nitric oxide release and antibiotic functionality, making it effective against antibiotic-resistant biofilms.
Implementation Method 1
The attachment can be formed by mixing the nitric oxide release agent and the antibiotic molecule in a solvent to form a mixture, and nitrosating the mixture
Data Source
AI summary
The present disclosure provides for modified antibiotic compounds, methods of making modified antibiotic compounds, methods of use, products including modified antibiotic compounds, and the like. The modified antibiotic compound comprises a nitric oxide release agent covalently attached to an antibiotic molecule, such as S-nitroso-N-acetylpenicillamine covalently attached to ampicillin.