Zinc(II) Metallocchaperone Complexes for p53 Refolding
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Solution Overview
Problem
There is a need for cancer therapeutics that can effectively reactivate mutant p53 proteins, as current treatments lack solubility and efficacy in restoring wild-type p53 function in cancer cells.
Innovation Solution
The development of novel zinc(II)metallochaperone complexes that refold TP53 mutant proteins into their wild-type conformations by binding to native ligation sites within cells, thereby restoring p53 function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If small molecules are used to reactivate mutant p53, then therapeutic effect is improved, but solubility is insufficient
Solution Approach 1:
The patent combines zinc ion (metallic component) with organic ligands containing pyridine and hydrazine groups to form coordination complexes. This composite structure integrates the reactivity of metal centers with the solubility and targeting capabilities of organic ligands, achieving both therapeutic efficacy and improved solubility profile
Solution Approach 2:
The patent systematically varies parameters including ligand substituents (R1-R6 groups), coordination geometry, and stoichiometry to optimize the balance between solubility and biological activity. Different substitution patterns on the pyridine and hydrazine rings allow fine-tuning of hydrophilicity while maintaining p53 reactivation capability
2Manufacturing precision
If zinc complexes are designed to bind mutant p53, then protein refolding is achieved, but complex solubility remains problematic
Solution Approach 1:
The patent introduces polar functional groups (carboxylate, hydroxyl, and additional pyridine/hydrazine units) at specific positions on the ligand framework. These localized polar regions enhance overall complex solubility without interfering with the zinc coordination sphere that binds to p53, thus maintaining refolding precision while improving solubility
Solution Approach 2:
The organic ligands act as intermediaries that bridge the hydrophobic zinc ion and the aqueous cellular environment. The ligands provide hydrophilic surfaces for solubility while presenting the zinc binding site for specific p53 interaction, effectively mediating between the metal center and biological target
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
These complexes demonstrate the ability to inhibit cancer cell growth by effectively refolding mutant p53 proteins, leading to restored wild-type function and subsequent inhibition of cancer cell proliferation.
Implementation Method 1
refolding TP53 mutant proteins into their wild-type conformations by treatment with zinc(II)metallochaperone complexes
Implementation Method 2
binding to native ligation sites within cells, thereby restoring p53 function
Data Source
AI summary
The invention provides a complex comprising Zn2+ and a compound of formula (I): or a deuterated analog thereof, or an ion or poly-ion thereof, or a salt thereof that is useful for treating cancer, as well as compositions and kits comprising such complexes.