Bifunctional Chimeric Molecules for Proximity-Mediated Kinase Labeling
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Solution Overview
Problem
Current treatments for diseases associated with enzymatic and other dysfunctions face challenges due to non-specific effects, limiting the development of effective modifications and treatments, particularly in post-translational modifications.
Innovation Solution
Chimeric small molecules with a kinase binding moiety, linker, and electrophilic reactive group are used to covalently label kinases, allowing proximity-mediated modifications of target substrates, including post-translational modifications, by repurposing kinases to modify non-native substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional treatments are used for enzymatic dysfunctions, then treatment is provided, but non-specific effects occur that limit effectiveness
Solution Approach 1:
The chimeric molecule is divided into distinct functional segments: a kinase binding moiety (A) that specifically binds to the kinase, a linker (L1-E) containing the electrophilic reactive group, and a target binding moiety (B) that binds to the substrate. This segmentation allows each component to perform its specific function independently, achieving targeted kinase-substrate interaction without non-specific effects.
Solution Approach 2:
The chimeric molecule acts as an intermediary that mediates the interaction between the kinase and the target substrate. By incorporating both the kinase binding moiety and the target binding moiety in a single molecule, it facilitates specific proximity-mediated interaction while preventing non-specific binding, thus improving treatment reliability.
2Adaptability or versatility
If kinases are repurposed to modify non-native substrates, then new therapeutic functions are achieved, but kinase specificity may be compromised
Solution Approach 1:
The chimeric molecule provides local quality by creating a specific microenvironment at the kinase binding site through the linker and electrophilic reactive group. This localized chemical environment enables the kinase to interact with non-native substrates in a controlled manner, maintaining specificity while achieving repurposing.
Solution Approach 2:
The molecule utilizes parameter changes by incorporating an electrophilic reactive group that can chemically modify the kinase-substrate interaction. This chemical parameter change enables the kinase to catalyze modifications on non-native substrates while maintaining controlled specificity through the designed molecular structure.
3Reliability
If covalent labeling of kinases is performed, then target binding is achieved, but irreversible binding may limit kinase activity
Solution Approach 1:
The chimeric molecule incorporates dynamic characteristics through the linker and electrophilic reactive group that can reversibly or irreversibly bind to the kinase depending on the specific chemical group used. This dynamic binding allows the molecule to achieve stable target binding while potentially maintaining kinase activity through reversible interaction mechanisms.
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 molecules enable targeted modifications of proteins, such as phosphorylation, to treat diseases by repurposing kinases, enhancing treatment efficacy and immune recruitment against cancer or pathogens.
Implementation Method 1
The chimeric small molecules can be used to improve the kinetics of native proteins modifications by bringing substrate molecules in proximity to the kinase... facilitate the covalent labeling of a protein with a target-binding moiety
Implementation Method 2
A is a kinase binding moiety... The kinase binding moiety non-covalently binds to the kinase of interest
Implementation Method 3
Small molecules that endow new functions to enzymes via proximity-mediated effects could be useful in the study and treatment of critical cellular functions
Data Source
AI summary
The present disclosure relates to chimeric small molecules, which find utility as modifiers of target substrates according to the formula A-L1-E-B or A-L1-E-L2-B, wherein A is a kinase binding moiety; B is a target binding moiety; L1 and L2 are each a linker; and E is an electrophilic reactive group. Molecules according to the present invention find use making substrate modifications such as post-translational modifications to targets that are not the natural substrate of the kinase; accordingly, diseases or disorders may be treated or prevented with molecules of the present disclosure.