Peptide Modulators of Angiogenesis via Systematic Screening
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Solution Overview
Problem
Current methods for identifying angiogenesis modulators are empirical and time-consuming, and there is a need for improved angiogenesis modulators and methods to systematically assess their biological activity for therapeutic use in various angiogenesis-related diseases.
Innovation Solution
Development of specific peptides with defined amino acid sequences, such as TSP, CXC, Collagen IV, Somatotropin, and Serpin motifs, that reduce blood vessel formation, and their use in pharmaceutical compositions, methods for reducing endothelial cell proliferation and increasing cell death, and methods for treating neoplasia and other angiogenesis-related conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If empirical methods are used to identify angiogenesis modulators, then the process can be performed with simple procedures, but the identification process becomes time-consuming and inefficient
Solution Approach 1:
The patent transforms the empirical identification process into a systematic approach by changing key parameters: using defined peptide sequences with specific amino acid motifs (TSP, CXC, Collagen IV, Somatotropin, Serpin) instead of random screening, and establishing quantitative assays to measure endothelial cell proliferation, migration, and tube formation. This parameter change enables high-throughput screening while maintaining scientific rigor.
Solution Approach 2:
The patent segments the complex angiogenesis process into distinct measurable components: endothelial cell proliferation, migration, and tube formation assays. Each aspect of angiogenesis is evaluated separately using specific peptide sequences, allowing systematic identification and characterization of modulators without requiring comprehensive empirical screening of all possible biological activities.
2Measurement precision
If comprehensive screening methods are used to assess biological activity, then more accurate evaluation is achieved, but the complexity and time required increase
Solution Approach 1:
The patent applies local quality by focusing assessment on specific critical functions of angiogenesis rather than attempting to measure all biological activities. Three targeted assays are used: proliferation (measuring cell division), migration (measuring cell movement), and tube formation (measuring vascular structure development). Each assay evaluates a specific aspect with high precision using defined peptide sequences, avoiding the need for comprehensive complex screening.
3Reliability
If multiple assay types are used to evaluate endothelial cell functions, then comprehensive biological activity assessment is achieved, but the time and resources required increase
Solution Approach 1:
The patent implements preliminary action by establishing a hierarchical screening approach: first screening for proliferation effects using defined peptide sequences, then progressively evaluating migration and tube formation only for candidates showing activity in previous assays. This preliminary assessment of key functions allows rapid filtering of active compounds, achieving comprehensive biological evaluation while minimizing time loss through staged testing rather than simultaneous execution of all assays.
Data Source
AI summary
Compositions and methods that are useful for modulating blood vessel formation, as well as methods that provide for the systematic and efficient identification of angiogenesis modulators, are described. As described in more detail below, a systematic computational methodology based on bioinformatics was used to identify novel peptide modulators of angiogenesis that have been characterized in vitro and/or in vivo.