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Updated: Jun 15, 2026
Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
Published on: November 21, 2013
Cyclodextrin-Based Peptide Self-Assemblies (Spds) That Enhance Peptide-Based Fluorescence Imaging and Antimicrobial
Jin-Biao Jiao1,2, Guan-Zhen Wang3,4, Xi-Le Hu1
1Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering , East China University of Science and Technology , 130 Meilong Rd. , Shanghai 200237 , P. R. China.
Researchers developed supramolecular-peptide-dots (Spds) using a novel cyclodextrin host for enhanced peptide delivery. These Spds improve intracellular delivery for diagnostics and boost antimicrobial peptide efficacy for therapeutics.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Biotechnology
Background:
- Peptides offer high specificity for biological targets but suffer from poor cell permeability and stability.
- Developing effective delivery systems is crucial for realizing the diagnostic and therapeutic potential of peptides.
Purpose of the Study:
- To create a novel supramolecular delivery system for enhancing peptide cell permeability and therapeutic efficacy.
- To demonstrate the utility of this system for both diagnostic imaging and antimicrobial applications.
Main Methods:
- Synthesis of a hepta-dicyanomethylene-4H-pyran appended β-cyclodextrin (DCM-β-CD) host.
- Complexation of 1-bromonaphthalene-modified peptides (P1-P4) with DCM-β-CD to form supramolecular-peptide-dots (Spds).
- Evaluation of Spds for intracellular delivery of fluorescent peptides (P1-P3) and assessment of antimicrobial activity of Spd-4.
Main Results:
- Hierarchical formation of unique supramolecular architectures (Spds) from peptide-DCM-β-CD interactions.
- Spds facilitated intracellular delivery of fluorescent peptides, enabling imaging of caspase-3 and mitosis.
- Spd-4 demonstrated enhanced antimicrobial efficacy against Gram-positive and Gram-negative bacteria with increased cellular uptake.
Conclusions:
- The developed Spd platform effectively overcomes peptide delivery limitations, enhancing both diagnostic and therapeutic applications.
- This supramolecular approach offers a generalizable strategy for improving the efficacy of functional peptides.
- Spds represent a promising new avenue for peptide-based diagnostics and therapeutics.
