Pyrrolodipyrimidine Complement Inhibitors for Selective Immune Modulation
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Solution Overview
Problem
Inappropriate activation of the complement system leads to various disease pathologies affecting the immune, renal, cardiovascular, and neurological systems, highlighting the need for compounds that can modulate aberrant complement activity.
Innovation Solution
Development of pyrrolo[12,3-d]pyrimidine compounds and analogues that can inhibit or modulate the complement system, providing therapeutic benefits in conditions characterized by aberrant complement activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the complement system is activated to destroy pathogens, then pathogen elimination is improved, but healthy cells and tissue are destroyed
Solution Approach 1:
The patent uses specific inhibitors (anti-C5 antibodies, C5a receptor antagonists, and C3 convertase inhibitors) as intermediary substances that selectively block harmful complement activation pathways while preserving beneficial immune functions. These intermediaries intervene between the complement system and healthy tissues to prevent damage without completely disabling pathogen elimination
Solution Approach 2:
The invention applies different types of complement inhibitors at different locations and stages of complement activation. For example, C3 convertase inhibitors act early in the cascade, while C5 inhibitors act later, allowing selective suppression of harmful effects while maintaining protective functions in different tissue contexts
2Strength
If complement proteins are activated to create pores in pathogens, then pathogen destruction is improved, but healthy cell membranes are damaged
Solution Approach 1:
The patent employs soluble complement regulatory proteins and specific inhibitors as intermediaries that bind to complement proteins and prevent them from reaching healthy cell membranes. These intermediaries intercept the complement cascade before it can form damaging pores, while allowing the cascade to proceed against pathogens
3Productivity
If complement activation is amplified through enzymatic reactions, then immune response efficiency is improved, but uncontrolled activation occurs
Solution Approach 1:
The invention utilizes feedback mechanisms through soluble complement regulators and inhibitors that detect excessive complement activation and counteract it. These feedback systems monitor complement levels and activate inhibitory pathways when activation becomes uncontrolled, while preserving efficient amplification during appropriate immune responses
Solution Approach 2:
The patent employs preliminary anti-action by pre-administering complement inhibitors or activating regulatory pathways before uncontrolled complement activation occurs. This preventive approach blocks harmful amplification loops before they can cause damage, while allowing beneficial complement responses to proceed
Data Source
AI summary
Disclosed are compounds of formula I, and pharmaceutically acceptable salts thereof. The compounds are inhibitors of the complement system. Also provided are pharmaceutical compositions comprising a compound of formula I, and methods involving use of the compounds and compositions in the treatment and prevention of diseases and conditions characterized by aberrant complement system activity.