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Rapid Generation of Amyloid from Native Proteins In vitro
Published on: December 5, 2013
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Citrate-Assisted Regulation of Protein Stability and Secretability from Synthetic Amyloids
Hèctor López-Laguna1,2, Marianna T P Favaro1,2, Sara Chellou-Bakkali1,3
1Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain.
ACS Applied Materials & Interfaces
|February 26, 2025
Summary
Researchers developed synthetic amyloidal granules for sustained protein release, mimicking the endocrine system. Citrate concentration was found to regulate protein release kinetics for tailored therapeutic applications.
Area of Science:
- Biomaterials Science
- Endocrinology
- Protein Chemistry
Background:
- Mammalian endocrine systems utilize functional amyloids as dynamic depots for hormone storage and release.
- These natural depots involve zinc (Zn2+) and histidine coordination for reversible cross-linking and protein release.
- Synthetic amyloidal granules can mimic these secretory properties for therapeutic protein delivery.
Purpose of the Study:
- To investigate methods for controlling the kinetics of protein release from synthetic amyloidal granules.
- To explore the role of citrate in regulating protein release profiles.
- To enhance the clinical applicability of synthetic secretory granules.
Main Methods:
- Fabrication of synthetic amyloidal granules using therapeutic proteins as building blocks.
- In vitro assessment of protein release kinetics under varying citrate concentrations.
- Analysis of citrate's function as a buffer, stabilizer, and chelating agent.
Main Results:
- Citrate concentration significantly influences the kinetics of protein release from synthetic granules.
- Citrate acts as a chelating agent, modulating the cross-linking dynamics and protein release rate.
- Controlled, time-prolonged release of functional proteins was achieved.
Conclusions:
- Citrate-assisted modulation of synthetic secretory granules enables tunable protein release.
- This approach offers a method to adjust granule preparation for specific clinical needs in therapy and vaccinology.
- The findings expand the potential applications of synthetic amyloidal granules in regenerative medicine and beyond.
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