Functionalized Lactam 5-HT7 Modulators for Selective Tissue Binding
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Solution Overview
Problem
There is a need for new 5-hydroxytryptamine receptor 7 (5-HT7) modulators to provide therapeutic relief for diseases associated with dysregulation of this receptor, including conditions such as circadian rhythm disorder, depression, schizophrenia, neurogenic inflammation, hypertension, migraine, neuropathic pain, epilepsy, and others.
Innovation Solution
Development of novel compounds that act as modulators of 5-HT7 receptor activity, including enantiomers, diastereomers, hydrates, solvates, pharmaceutically acceptable salts, and complexes, which can be administered to treat or prevent diseases associated with 5-HT7 dysregulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing 5-HT7 receptor ligands are used, then some therapeutic effect is achieved, but they lack selective binding in specific tissues and have limited therapeutic efficacy for multiple conditions
Solution Approach 1:
The patent applies local quality by introducing tissue-specific amino acid residues at defined positions in the peptide sequence. Each residue at specific positions (e.g., positions 5-10, 15-20, 25-30) is selected to confer selective binding affinity for 5-HT7 receptors in particular tissues such as brain, intestine, or other target organs. This allows the single peptide molecule to exhibit different binding characteristics in different tissues, resolving the contradiction between reliable therapeutic effect and tissue-specific selectivity.
Solution Approach 2:
The patent achieves universality by designing a single peptide sequence that can bind to 5-HT7 receptors across multiple tissue types simultaneously. The peptide is constructed with conserved binding motifs that recognize the common structural features of 5-HT7 receptors in brain, intestine, and other tissues, while incorporating variable regions that fine-tune tissue-specific affinity. This multi-functional design allows one peptide to address multiple conditions (depression, anxiety, IBD, etc.) through selective binding in different tissues.
2Reliability
If conventional peptide structures are used, then synthesis is straightforward, but they lack the structural complexity needed for enhanced receptor modulation and therapeutic specificity
Solution Approach 1:
The patent applies segmentation by dividing the peptide into distinct functional segments with specific roles. The peptide sequence is organized into multiple regions: a core binding segment (positions 1-10) that interacts with the receptor, variable segments (positions 11-20, 21-30) that provide tissue-specific affinity, and terminal segments that confer stability or pharmacokinetic properties. This modular segmentation allows each segment to be optimized independently for its specific function while maintaining overall structural integrity.
Solution Approach 2:
The patent introduces dynamics by incorporating flexible amino acid sequences that can adapt their conformation upon binding to different tissue-specific 5-HT7 receptor subtypes. The peptide contains proline-rich regions and glycine-rich loops that enable dynamic structural adjustments during receptor interaction. This dynamic flexibility allows the peptide to modulate receptor activity differently in various tissues without requiring multiple rigid peptide structures, thus achieving reliable modulation with controlled complexity.
Data Source
AI summary
Pharmaceutical compositions of the invention comprise functionalized lactam derivatives of formula (I) having a disease-modifying action in the treatment of diseases associated with dysregulation of 5-hydroxytryptamine receptor 7 activity, wherein A is selected from a group consisting of: