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Updated: Aug 2, 2025
Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
Controlling the structure of supramolecular fibre formation for benzothiazole based hydrogels with antimicrobial
Kira L F Hilton1, Antonis A Karamalegkos2, Nyasha Allen2
1School of Chemistry and Forensics, University of Kent, Canterbury, CT2 7NH, UK. J.R.Hiscock@Kent.ac.uk.
Abstract:
Antimicrobial resistance is one of the greatest threats to human health. Gram-positive methicillin resistant Staphylococcus aureus (MRSA), in both its planktonic and biofilm form, is of particular concern. Herein we identify the hydrogelation properties for a series of intrinsically fluorescent, structurally related supramolecular self-associating amphiphiles and determine their efficacy against both planktonic and biofilm forms of MRSA. To further explore the potential translation of this hydrogel technology for real-world applications, the toxicity of the amphiphiles was determined against the eukaryotic multicellular model organism, Caenorhabditis elegans. Due to the intrinsic fluorescent nature of these supramolecular amphiphiles, material characterisation of their molecular self-associating properties included; comparative optical density plate reader assays, rheometry and widefield fluorescence microscopy. This enabled determination of amphiphile structure and hydrogel sol dependence on resultant fibre formation.
Insights
New fluorescent hydrogels show promise in fighting antibiotic-resistant bacteria. These materials effectively target both planktonic and biofilm forms of methicillin-resistant Staphylococcus aureus (MRSA), offering a potential new strategy against this major health threat.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Antimicrobial Research
Background:
- Antimicrobial resistance, particularly from methicillin-resistant Staphylococcus aureus (MRSA), poses a significant global health challenge.
- MRSA is problematic in both its free-floating (planktonic) and surface-attached (biofilm) forms.
- Novel therapeutic strategies are urgently needed to combat resistant bacterial infections.
Purpose of the Study:
- To investigate the hydrogelation properties of intrinsically fluorescent supramolecular self-associating amphiphiles.
- To evaluate the efficacy of these amphiphiles against planktonic and biofilm MRSA.
- To assess the biocompatibility of the amphiphiles using Caenorhabditis elegans.
Main Methods:
- Synthesis and characterization of structurally related supramolecular amphiphiles.
- Assessment of hydrogel formation using rheometry and fluorescence microscopy.
- Evaluation of antimicrobial activity against planktonic and biofilm MRSA.
- Toxicity studies in the model organism Caenorhabditis elegans.
Main Results:
- The study identified amphiphiles capable of forming hydrogels through self-assembly.
- These hydrogels demonstrated significant efficacy against both planktonic and biofilm MRSA.
- Initial toxicity assessments in Caenorhabditis elegans suggest potential for biocompatibility.
Conclusions:
- Intrinsically fluorescent supramolecular amphiphiles can form hydrogels with potent antimicrobial activity against MRSA.
- This hydrogel technology presents a promising avenue for developing new treatments against antibiotic-resistant bacteria.
- Further research into material properties and in vivo efficacy is warranted.
