Membrane-Activated Chelators for Parasitic Infection Treatment
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Solution Overview
Problem
Current chemotherapeutic treatments for parasitic diseases such as Human African trypanosomiasis (HAT) and malaria are inadequate in terms of effectiveness.
Innovation Solution
Development of a pharmaceutical composition comprising membrane-activated chelator compounds that chelate calcium and zinc ions, disrupting parasite growth and function, thereby modulating their activity and serving as an anti-parasitic treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional chemotherapeutic treatments are used for parasitic diseases, then treatment is provided, but effectiveness is inadequate
Solution Approach 1:
The invention changes the chemical parameters of chelating agents by developing membrane-activated chelators (MACs) with specific molecular structures (Formula I) that undergo conformational changes upon membrane interaction. This enables the chelators to selectively bind calcium and zinc ions at the membrane interface, achieving superior parasite growth inhibition compared to conventional chelators while maintaining treatment effectiveness
Solution Approach 2:
The invention creates composite therapeutic action by combining membrane-activated chelating properties with ion-binding functionality. The MAC compounds integrate lipophilic membrane-interacting moieties with chelating groups, forming a composite material that simultaneously disrupts membrane integrity and sequesters essential metal ions, thereby resolving the contradiction between treatment effectiveness and parasite growth inhibition
2Reliability
If chelators are used to bind metal ions, then ion concentration is reduced, but selectivity for parasite vs host cells is poor
Solution Approach 1:
The invention applies local quality by designing chelators that are inactive in the bulk aqueous environment but become activated specifically at the lipid membrane interface. The MAC compounds exhibit different conformational states and binding affinities depending on their local environment, allowing selective chelation of calcium and zinc ions at the parasite membrane while leaving host cell ions unaffected
Solution Approach 2:
The lipid membrane serves as an intermediary that activates the chelators. The MAC compounds require membrane interaction to transition from an inactive to an active conformation, enabling selective ion binding at the membrane interface. This intermediary mechanism ensures that chelation activity is localized to the parasite membrane rather than occurring systemically, thereby improving selectivity and reducing host cell toxicity
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 compounds effectively impede parasite transmigration across biological barriers and exhibit trypanocidal and antimalarial properties, demonstrating potential for improved treatment outcomes in parasitic infections.
Implementation Method 1
membrane-activated chelator compounds that chelate calcium and zinc ions, disrupting parasite growth and function
Implementation Method 2
the drugs are able to unable to bind metal ions at their elevated non-physiological concentrations
Data Source
AI summary
Provided herein are pharmaceutical compositions useful in the prevention and treatment of protozoan infections in mammals comprising administering to the subject a pharmaceutical composition comprising at least one membrane activated chelator compound which is a lipophilic diester derivative of the chelating agent 1,2-bis(2 aminophenoxy)ethane-N,N,N′,N′-tetraacetic acid, or a salt, solvate, stereoisomer, or prodrug thereof, as well as compositions which include at least one or more other anti-parasitic compound, and a pharmaceutically acceptable carrier, in an effective amount. Methods for prevention, treatment, and combination therapies are also provided.