Cyclic Peptides for FAP Targeting and Tumor Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current FAP-targeting ligands have limited therapeutic applications due to short tumor retention times, necessitating the development of compounds with high affinity for fibroblast activation protein (FAP) that can effectively target and treat FAP-implicated cancers.
Innovation Solution
Cyclic peptides conjugated with imaging agents, chelating agents, radionuclides, or cytotoxic drugs, which exhibit strong binding to FAP and prolonged tumor retention, enabling both diagnostic imaging and therapeutic interventions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional FAP-targeting ligands are used, then imaging specificity is achieved, but tumor retention time is short
Solution Approach 1:
The patent modifies the chemical structure of FAP-targeting ligands by introducing cyclic peptide configurations and specific amino acid sequences (e.g., D-Phe-D-Trp-D-Asn-D-Asp-D-Pro-D-Ala-NH2), changing pharmacokinetic parameters to achieve prolonged tumor retention time while maintaining imaging specificity and therapeutic effectiveness
Solution Approach 2:
The invention creates composite FAP-targeting compounds by conjugating cyclic peptides with various functional moieties including imaging agents (radioligands), chelating agents, and cytotoxic drugs, achieving multi-functional compounds that simultaneously provide imaging capability and therapeutic effect with extended retention
2Reliability
If FAP-targeting compounds with high affinity are developed, then therapeutic effectiveness is improved, but compound complexity increases
Solution Approach 1:
The patent divides the FAP-targeting compound into distinct functional segments: the cyclic peptide core (providing FAP binding), linker molecules (providing flexibility and connectivity), and functional moieties (imaging agents, chelating agents, or cytotoxic drugs). This segmentation allows each component to be optimized independently while maintaining overall effectiveness
Solution Approach 2:
The cyclic peptide core serves as a universal platform that can be conjugated to multiple different functional moieties, enabling the same peptide structure to support imaging, therapy, or combination applications. This multi-functionality reduces the need to develop entirely new compounds for different purposes
Data Source
AI summary
Described herein are cyclic peptides targeting fibroblast activation protein (FAP), and their incorporation into compounds for radioligand imaging and therapies, as well as methods and/or uses of such compounds for the imaging, treatment and/or prevention of FAP-implicated diseases and disorders.