Peptide-Chip Screening for Cell-Repelling Peptides
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Solution Overview
Problem
Current methods for identifying peptides with cell-repelling properties are limited by the lack of high-throughput screening techniques, which are costly and not easily applicable to various cell types and systems, especially those with high cell density, and often disrupt cell cultivation conditions.
Innovation Solution
A method using high-density peptide arrays on peptide-chips for fluorescence detection allows cells to flow freely, enabling the identification of peptides and sequences with cell-repelling properties without limiting cell culture volume, suitable for high-throughput screening and applicable to diverse cell types, including heterogeneous cultures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-throughput screening is implemented using traditional HTS methods, then screening efficiency and automation are improved, but costs increase significantly making it unaffordable for most research centers
Solution Approach 1:
The invention divides the screening process into modular components: peptide arrays are segmented into multiple spots on a single substrate, allowing parallel testing of many peptides simultaneously. This segmentation enables high-throughput screening without requiring expensive automated HTS systems, as multiple samples can be processed in a single experimental setup.
Solution Approach 2:
The invention uses peptide arrays where multiple copies of different peptide sequences are synthesized and immobilized on a single substrate. This allows researchers to test many peptide variants in parallel using a unified platform, eliminating the need for individual high-cost HTS runs for each peptide and significantly reducing overall screening costs.
2Quantity of substance
If miniaturized platforms are used to reduce reagent and cell consumption, then volume efficiency is improved, but cell cultivation conditions are disrupted due to pressure changes, diffusion parameters, and evaporation issues
Solution Approach 1:
The invention transitions from volume-based miniaturization to surface-based analysis. Instead of reducing cell culture to nL-scale droplets that disrupt physiological conditions, the peptide arrays are organized on a two-dimensional surface where cells can attach and be analyzed in a more physiologically relevant environment, maintaining reliable cell cultivation conditions while achieving high-throughput screening.
3Quantity of substance
If peptide libraries are synthesized and transferred to cells using traditional methods, then molecule diversity is improved, but the transfer efficiency and speed are limited
Solution Approach 1:
The invention performs preliminary synthesis and organization of diverse peptide sequences on the array substrate before introducing cells. All peptide variants are pre-positioned on the array in a systematic layout, allowing cells to be exposed to the entire diverse library simultaneously upon contact, thereby maximizing transfer efficiency and screening speed without compromising molecule diversity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method efficiently screens for peptides with strong cell-repelling properties, allowing for the evaluation of cell behavior and modification of surfaces with cell-repelling properties, applicable in medical and tissue engineering fields, without disrupting cell cultivation conditions.
Implementation Method 1
a chip which comprises attached to a chip-surface an array of multiple different peptides and/or sequences
Implementation Method 2
fluorescence detection of the chip surface, detecting and/or identifying the peptides and/or sequences with cell-repelling properties via fluorescence signals
Data Source
Figure 1(a)~1(c)
Figure 2~3
Figure 4~5
AI summary
The invention relates to a method for screening for peptides, sequences and proteins with cell-repelling properties in a high-throughput screening method using peptide-chips and fluorescence detection. The invention further relates to peptides and sequences with cell-repelling properties, identified in the screening method of the invention, as well as to the use of such cell-repelling peptides and/or sequences.