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Photocrosslinked, Tunable Protein Vesicles for Drug Delivery Applications.

Yirui Li1, Julie A Champion1

  • 1School of Chemical and Biomolecular Engineering, BioEngineering Program, Georgia Institute of Technology, 950 Atlantic Dr. NW, Atlanta, GA, 30332-2000, USA.

Advanced Healthcare Materials
|January 29, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed photocrosslinkable protein vesicles using elastin-like polypeptides (ELP) and unnatural amino acids. These stable vesicles show potential for dual drug delivery applications, improving therapeutic options.

Keywords:
drug deliveryrecombinant proteinsself-assemblystimuli responsivenessunnatural amino acids

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Area of Science:

  • Biomaterials Science
  • Protein Engineering
  • Nanotechnology

Background:

  • Recombinant proteins offer versatile, biocompatible building blocks for self-assembled vesicles.
  • Elastin-like polypeptide (ELP) fusion proteins can form vesicles that encapsulate cargo.
  • A key challenge is enhancing vesicle stability in physiological environments for biofunctional applications.

Purpose of the Study:

  • To engineer stable, photocrosslinkable protein vesicles for enhanced drug delivery.
  • To investigate the impact of unnatural amino acids on vesicle properties.
  • To demonstrate dual cargo encapsulation and delivery capabilities.

Main Methods:

  • Incorporation of para-azido phenylalanine into ELP fusion proteins.
  • Photocrosslinking of self-assembled protein vesicles.
  • Tuning vesicle size and swelling via ELP hydrophobicity and ionic strength.
  • In vitro assessment of doxorubicin and fluorescent protein encapsulation and delivery.

Main Results:

  • Photocrosslinking successfully stabilized protein vesicles.
  • Vesicle size and swelling were tunable by altering ELP hydrophobicity and ionic strength.
  • Successful encapsulation and dual delivery of doxorubicin and fluorescent protein were demonstrated in vitro.

Conclusions:

  • Photocrosslinkable ELP-based protein vesicles offer enhanced stability for biofunctional applications.
  • These vesicles are promising for in vitro dual drug delivery, including small molecule/protein combination therapies.
  • The developed system holds potential for advanced targeted drug delivery strategies.