Cyclic GhR-Binding Peptides for Receptor-Targeted Compound Delivery
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Solution Overview
Problem
Current technologies lack effective peptides that can bind specifically to the growth hormone receptor (GhR) to address conditions such as acromegaly and gigantism, and there is a need for compositions that can target and transport compounds to GhR for pharmacological actions.
Innovation Solution
Development of GhR-binding peptides with specific amino acid sequences, including cyclic peptides with substitutions, deletions, or additions, and compositions comprising these peptides, which exhibit avidity for GhR and have antagonistic activity, allowing targeted delivery of compounds to GhR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GhR-binding peptides are developed to target and transport compounds to GhR, then therapeutic efficacy for conditions like acromegaly and gigantism is improved, but the complexity of peptide design and synthesis increases
Solution Approach 1:
The peptide is designed with a specific segmented structure consisting of 13 amino acid positions (X1-X13) where each position can be occupied by specific amino acids or their substitutions. This segmentation allows systematic optimization of binding affinity and pharmacological properties while managing design complexity through modular amino acid selection at each position.
Solution Approach 2:
The patent employs parameter changes by specifying particular amino acids at each position (X1-X13) and allowing substitutions, deletions, or additions. This systematic variation of amino acid parameters enables optimization of GhR binding avidity and pharmacological activity while maintaining a manageable design framework through defined positional constraints.
2Measurement precision
If specific amino acid sequences are designed to achieve high avidity for GhR, then binding specificity is improved, but the difficulty of synthesizing and purifying the peptide increases
Solution Approach 1:
The peptide sequence is divided into 13 discrete amino acid positions (X1-X13) with specific requirements for each position. This segmentation enables systematic synthesis approaches where each position can be independently optimized and synthesized, followed by assembly, thereby managing the complexity of producing high-specificity peptides.
Solution Approach 2:
Different amino acid properties are assigned to different positions (X1-X13) to achieve optimal local interactions with GhR. For example, aromatic amino acids are specified at positions requiring hydrophobic interactions, while basic amino acids are placed at positions requiring electrostatic interactions. This local optimization of amino acid quality at each position achieves high binding specificity while maintaining synthetic feasibility through standardized amino acid chemistry.
Data Source
AI summary
The present technology generally relates to peptides that bind to the growth hormone receptor (GhR), to peptides that bind to the GhR and have antagonistic activity, and to compositions comprising such peptides.