Substituted Indole Compounds for Stable IDO1 Activation
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Solution Overview
Problem
Current treatments for autoimmune disorders modulated by IDO1 expression lack specific activators of tryptophan oxidation, leading to ineffective immune regulation and potential adverse effects on health.
Innovation Solution
Development of substituted indole compounds with a single thiol group, capable of activating the indoleamine 2,3-dioxygenase (IDO1) enzyme, and optionally regenerating through reaction with glutathione, to modulate immune responses and treat autoimmune disorders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IDO1 is activated to treat autoimmune disorders, then immune regulation is improved, but enzyme stability in cellular environment deteriorates
Solution Approach 1:
The patent employs substituted indole compounds as intermediary molecules that bind to IDO1 and stabilize its active ferrous state. These compounds act as mediators between the cellular environment and the enzyme, preventing oxidation to the inactive ferric state while allowing tryptophan oxidation to proceed, thus maintaining enzyme stability and immune regulation simultaneously
Solution Approach 2:
The patent utilizes parameter changes in the redox state of the IDO1 heme iron, maintaining it in the ferrous state through specific small molecule interactions. By changing the chemical environment around the heme iron through substrate or small molecule binding, the enzyme stability is improved while retaining catalytic activity for immune regulation
2Reliability
If specific IDO1 activators are developed, then treatment effectiveness is improved, but compound complexity increases
Solution Approach 1:
The patent applies local quality by introducing specific functional groups (thiol, hydroxyl, amino) at particular positions on the indole ring structure. These localized modifications at specific sites (C2, C3, C4 positions) provide the necessary IDO1 activation capability without requiring complex overall molecular structures, thus improving treatment effectiveness while controlling compound complexity
Solution Approach 2:
The patent creates composite molecular structures by combining the indole core with various substituent groups (thiol, halogen, cyano, amino). This composite approach allows the molecule to exhibit multiple properties: IDO1 binding affinity, activation capability, and metabolic stability, achieving effective treatment without excessive structural complexity
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 substituted indole compounds effectively activate IDO1, maintaining enzyme activity in the reducing environment of cells, thereby regulating immune responses and treating a wide range of autoimmune disorders, including maternal rejection of fetal tissue and transplanted tissues.
Implementation Method 1
The substituted indole compound activates the indoleamine 2,3-dioxygenase (IDO1) enzyme
Implementation Method 2
IDO1 catalyzes the dioxygenation of the indole ring of tryptophan... oxidizes tryptophan to N-formylkynurenine
Implementation Method 3
optionally regenerating through reaction with glutathione
Data Source
AI summary
A method and compositions of matter for treating or preventing an auto-immune disorder or immune response in a patient, that includes providing a therapeutic dose to the patient of a substituted indole compound having at least one substitution, wherein the substituted indole compound has only one thiol group, and wherein the ring the thiol group is attached to only contains one N or O atom.