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Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
Published on: November 21, 2013
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Disassembly of self-assembling peptide hydrogels as a versatile method for cell extraction and manipulation
Cosimo Ligorio1,2,3, Magda Martinez-Espuga1,2, Domenico Laurenza1,2
1Biodiscovery Institute, University of Nottingham, Nottingham, UK. a.mata@nottingham.ac.uk.
Journal of Materials Chemistry. B
|October 25, 2024
Summary
Researchers developed a method to easily retrieve viable cells from self-assembling peptide hydrogels (SAPHs). This new protocol using tetrasodium ethylenediaminetetraacetic acid (Na4EDTA) enables downstream analysis and applications of cells cultured in 3D matrices.
Area of Science:
- Biomaterials Science
- Cell Biology
- Tissue Engineering
Background:
- Self-assembling peptide hydrogels (SAPHs) offer tunable, biomimetic 2D and 3D cell culture environments.
- Current limitations include low cell yields and disruption during isolation from SAPHs, hindering post-culture analyses.
Purpose of the Study:
- To develop an effective protocol for disassembling peptide amphiphile (PA) SAPHs.
- To enable high-viability retrieval of 3D encapsulated cells with minimal disruption.
Main Methods:
- Utilized tetrasodium ethylenediaminetetraacetic acid (Na4EDTA) as a metal chelator to disrupt PA self-assembly.
- Characterized PA disassembly across nano- to macro-scales.
- Evaluated downstream biological analyses of retrieved cells.
Main Results:
- Achieved rapid, efficient, clean, and gentle gel-to-sol transition of PA SAPHs.
- Successfully isolated diverse cell types from PA hydrogels with high viability.
- Demonstrated reproducibility in downstream analyses like cell re-plating, gene analysis, and flow cytometry without material interference.
Conclusions:
- The developed protocol facilitates easy and effective cell retrieval from PA SAPHs.
- This advancement opens new avenues for SAPH applications in cell expansion, in vitro modeling, cell therapies, and regenerative medicine.
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