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Development of a Backbone Cyclic Peptide Library as Potential Antiparasitic Therapeutics Using Microwave Irradiation
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Hybrid peptides as platform for synchronized combination therapy.

Elahe Ashrafichoobdar1, Tanner Perez1, Luladey Ayalew1

  • 1Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Blvd, Long Beach, CA 90840, United States.

Colloids and Surfaces. B, Biointerfaces
|April 28, 2023
PubMed
Summary

This study introduces a novel collagen peptide platform for simultaneous delivery of three cancer drugs, improving treatment efficacy. This self-assembling nanoparticle system ensures drugs reach the same location, enhancing cancer therapy outcomes.

Keywords:
CodeliveryCombination therapyHeterotrimer peptidesHybrid peptidesPeptide nanoparticle

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Cancer Therapeutics

Background:

  • Combination cancer therapy effectively targets multiple cellular pathways but faces execution challenges.
  • Synchronous and colocalized drug delivery is crucial for optimizing combination therapy efficacy.
  • Existing drug delivery systems often struggle with drug loading, orthogonal synthesis, and uniform biodistribution.

Purpose of the Study:

  • To develop a collagen peptide-based platform for synchronous and colocalized cellular delivery of multiple therapeutic agents.
  • To demonstrate the platform's capability using a combination of Paclitaxel, Doxorubicin, and 5-Fluorouracil for breast cancer treatment.
  • To evaluate the advantages of this self-assembling peptide system for drug delivery applications.

Main Methods:

  • A hybrid peptide combining collagen and cell-penetrating peptide (CPP) was designed to self-assemble into nanoparticles.
  • Three distinct chemotherapeutic agents (Paclitaxel, Doxorubicin, 5-Fluorouracil) were conjugated to the peptide's N-terminus.
  • The system's ability to achieve synchronous and colocalized delivery was assessed, alongside enhanced cellular uptake and drug solubility.

Main Results:

  • The collagen/CPP peptide successfully formed organic, high aspect ratio nanoparticles capable of delivering three agents simultaneously.
  • The platform facilitated colocalized delivery, ensuring identical biodistribution for all conjugated drugs.
  • Calculations confirmed a synergistic effect and enhanced efficacy for the Paclitaxel-Doxorubicin-5-Fluorouracil combination delivered via this system.

Conclusions:

  • Self-assembling peptides offer a versatile platform for overcoming challenges in combination cancer therapy drug delivery.
  • This approach simplifies drug conjugation and ensures colocalized delivery, potentially improving therapeutic outcomes.
  • The platform can be expanded for personalized drug combinations and integration of additional functionalities like targeting or imaging.