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Preparation and antitumor activity of triphenylphosphine-based mitochondrial targeting polylactic acid nanoparticles

Lin Ye1, Qing Yao2, Fengnan Xu1

  • 1Department of Pharmaceutics, School of Pharmacy, Hubei University of Science and Technology, Xianning, China.

Journal of Biomaterials Applications
|August 2, 2021
PubMed

Insights

Triphenylphosphine-polylactic acid nanoparticles target cancer cell mitochondria for improved chemotherapy. This novel drug delivery system enhances antitumor activity and reduces side effects, offering a promising approach for cancer therapy.

Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Cancer Therapeutics

Background:

  • Traditional chemotherapy faces challenges with low bioavailability and severe toxic side effects due to lack of selectivity.
  • Mitochondria in cancer cells exhibit higher activity and transmembrane potential, presenting a viable target for drug delivery.
  • Targeted drug delivery systems are crucial for enhancing the efficacy and safety of cancer treatments.

Purpose of the Study:

  • To synthesize triphenylphosphine (TPP) based mitochondria-targeting polylactic acid (PLLA) nanoparticles (TPP-PLLA NPs) for improved anticancer drug delivery.
  • To load 7-hydroxyl coumarin (7-HC) into TPP-PLLA NPs to create 7-HC/TPP-PLLA NPs.
  • To evaluate the mitochondrial accumulation and antitumor activity of the developed nanoparticles.

Main Methods:

  • Synthesis of triphenylphosphine (TPP) based polylactic acid (PLLA) nanoparticles (TPP-PLLA NPs).
  • Characterization of the carrier material using 1H NMR and FT-IR spectroscopy.
  • Loading of 7-hydroxyl coumarin (7-HC) into TPP-PLLA NPs to form 7-HC/TPP-PLLA NPs.
  • Assessment of nanoparticle accumulation in mitochondria and evaluation of antitumor activity.

Main Results:

  • TPP-PLLA NPs were successfully synthesized and characterized.
  • 7-HC was effectively loaded into TPP-PLLA NPs.
  • TPP-PLLA NPs demonstrated preferential accumulation within cancer cell mitochondria.
  • The 7-HC/TPP-PLLA NPs exhibited enhanced antitumor activity compared to controls.

Conclusions:

  • TPP-PLLA nanoparticles represent a promising platform for mitochondria-targeted drug delivery in cancer therapy.
  • This approach can potentially improve the efficacy of chemotherapy by concentrating drugs in cancer cell mitochondria.
  • The developed TPP-PLLA NPs offer a strategy to overcome the limitations of traditional chemotherapy, enhancing therapeutic outcomes.
Keywords:
7-hydroxyl coumarinMitochondrial targetingpolylactic acidtriphenylphosphine

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