Multifunctional nanoparticles for targeting the tumor microenvironment to improve synergistic drug combinations and

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Mei-Lin Chen1, Chih-Jen Lai2, Yi-Nan Lin3

  • 1Department of Pharmacy, Chen Hsin General Hospital, Taipei, Taiwan.

Journal of Materials Chemistry. B
|October 28, 2020
PubMed

Insights

This study developed novel nanoparticles combining epigallocatechin-3-gallate (EGCG) and docetaxel to enhance prostate cancer treatment. The targeted nanoparticles improved drug delivery, reduced tumor growth, and minimized side effects in preclinical studies.

Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Oncology

Background:

  • Docetaxel chemotherapy is standard for prostate cancer but faces challenges like drug resistance and side effects.
  • Epigallocatechin-3-gallate (EGCG) shows potential as an anticancer agent, but its combination with docetaxel has limitations like poor bioavailability.
  • Existing combination therapies struggle with poor pharmacokinetics and low tissue distribution.

Purpose of the Study:

  • To develop a nanoparticle system for enhanced synergistic delivery of EGCG and docetaxel for prostate cancer treatment.
  • To overcome the limitations of traditional combination therapies, including poor bioavailability and targeting.
  • To investigate the efficacy and safety of multifunctional nanoparticles in preclinical prostate cancer models.

Main Methods:

  • Encapsulation of EGCG and low-dose docetaxel within TPGS-conjugated hyaluronic acid and fucoidan-based nanoparticles.
  • Utilizing pH-sensitive nanoparticles for controlled drug release and CD44/P-selectin ligand recognition for targeted cellular uptake.
  • Evaluating in vitro cytotoxicity and cell cycle arrest (G2/M phase) and in vivo tumor growth inhibition and organ damage in mouse models.

Main Results:

  • Nanoparticles facilitated simultaneous targeting of tumor markers and increased intratumoral drug accumulation.
  • pH-sensitive drug release and targeted cellular internalization via CD44 and P-selectin ligand recognition were confirmed.
  • In vitro studies showed significant inhibition of prostate cancer cell growth via G2/M phase arrest.
  • In vivo studies demonstrated significant tumor growth attenuation and increased M30 protein expression without observable organ damage.

Conclusions:

  • The multifunctional nanoparticle system effectively improved the synergistic effect of EGCG and docetaxel.
  • This targeted nanoparticle approach shows great potential for overcoming limitations in current prostate cancer chemotherapy.
  • The developed system offers a promising strategy for developing advanced prostate cancer therapeutics with improved efficacy and safety.

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