Stable Titanium Vanadium Complexes Nanoparticle Delivery
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Solution Overview
Problem
Titanium (IV) based anticancer complexes face limitations due to aquatic instability and the need for hydrolysis, which affects their cytotoxicity and stability, while vanadium complexes show high cytotoxicity but low stability in water, hindering their effectiveness.
Innovation Solution
Development of highly water-stable titanium complexes without labile ligands, which are formulated into nanoparticles to enhance solubility and cell penetration, eliminating the need for hydrolysis and reducing side product release, thereby maintaining stability and cytotoxicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If labile ligands are used in titanium complexes to enable hydrolysis and activate cytotoxicity, then cytotoxic activity is improved, but aquatic stability deteriorates
Solution Approach 1:
The patent removes labile ligands from the titanium complex structure entirely, extracting the source of aquatic instability while preserving cytotoxic activity through the core salan ligand framework. This eliminates the trade-off by designing complexes that do not require hydrolysis for activation.
Solution Approach 2:
The patent changes the ligand stability parameters by using exclusively inert, non-labile ligands with strong Ti-L bonds. This parameter change transforms the complex from hydrolytically unstable to highly stable in aqueous environments while maintaining biological activity.
2Stability of the object's composition
If titanium complexes are made highly stable and inert by removing labile ligands, then aquatic stability is improved, but solubility and cell penetration deteriorate
Solution Approach 1:
The patent segments the complex into a stable core structure with inert ligands and formulates it into nanoparticle carriers. This segmentation allows the core to maintain stability while the nanoparticle formulation provides the necessary solubility and cell penetration properties.
Solution Approach 2:
The patent introduces nanoparticle carriers as intermediary structures that mediate between the stable but potentially insoluble titanium complexes and the biological system. These carriers enhance solubility and facilitate cell uptake without compromising the stability of the active complex.
3Reliability
If vanadium complexes are used to achieve high cytotoxicity, then cytotoxic activity is improved, but stability in water deteriorates
Solution Approach 1:
The patent removes labile ligands from vanadium complexes similar to titanium complexes, extracting the source of aquatic instability while preserving the high cytotoxic activity inherent to vanadium coordination compounds.
Data Source
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AI summary
The present application provides a family of highly resistant and water-stable Titanium and Vanadium complexes, which may be administered directly without a further hydrolysis step and which solubility and cell-penetration characteristics may be modifiable by reducing their particle size to the nanoscale.