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Tripeptide-dopamine fluorescent hybrids: a coassembly-inspired antioxidative strategy
1Terahertz Technology Innovation Research Institute, Shanghai Key Laboratory of Modern Optical System, Terahertz Science Cooperative Innovation Center University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China. fengzhang1978@hotmail.com.
Chemical Communications (Cambridge, England)
|May 11, 2020
Summary
Tripeptides and dopamine molecules self-assemble into novel fluorescent nanostructures. This coassembly method enhances fluorescence and prevents dopamine oxidation, inhibiting melanin formation.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Chemical Biology
Background:
- Dopamine molecules are known for their unique electrochemical properties and propensity for oxidation, leading to melanin formation.
- Peptides, including tripeptides, possess inherent properties that can be modulated for various applications.
- Developing novel nanostructures with enhanced functionalities is crucial for advanced material science.
Purpose of the Study:
- To investigate the coassembly of unmodified tripeptides and dopamine molecules into hybrid nanostructures.
- To characterize the photophysical properties of these novel hybrid nanostructures.
- To evaluate the effect of coassembly on dopamine oxidation and melanin pathway inhibition.
Main Methods:
- Coassembly of tripeptides and dopamine molecules.
- Characterization of nanostructure formation using spectroscopy and microscopy.
- Assessment of fluorescence properties, including emission wavelength and intensity.
- Evaluation of dopamine oxidation resistance and melanin pathway inhibition through electrochemical and biochemical assays.
Main Results:
- Successful formation of fluorescent hybrid nanostructures from unmodified tripeptides and dopamine.
- Coassembly resulted in a significant red-shift of over 50 nm in emission, surpassing the limits of individual components.
- The hybrid nanostructures demonstrated effective resistance to dopamine oxidation.
- Melanin pathway formation was successfully inhibited by the coassembly process.
Conclusions:
- Coassembly of tripeptides and dopamine offers a novel strategy for creating advanced fluorescent hybrid nanostructures.
- This method overcomes the intrinsic fluorescence limitations of dopamine and peptides.
- The developed nanostructures show potential for applications requiring fluorescence and oxidation resistance, such as biosensing or drug delivery, by preventing unwanted melanin formation.
