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Combination Therapies and Personalized Medicine

Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
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Updated: Jul 12, 2026

Photodynamic Therapy with Blended Conducting Polymer/Fullerene Nanoparticle Photosensitizers
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Light-Induced Caspase-3-Responsive Chimeric Peptide for Effective PDT/Chemo Combination Therapy with Good

Yong-Li Mu1, Jin Zhang2, Meng-Qing Xu1

  • 1State Key Laboratory of Agricultural Microbiology, College of Science, Huazhong Agricultural University, Wuhan 430070, China.

ACS Applied Bio Materials
|January 13, 2022
PubMed
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This study developed a light-activated doxorubicin (DOX) prodrug delivered via nanoparticles. This targeted approach minimizes systemic toxicity, enhancing chemotherapy efficacy and patient outcomes.

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Cancer Therapy

Background:

  • Doxorubicin (DOX) chemotherapy faces challenges due to severe systemic toxicity and lack of tumor specificity.
  • Uncontrolled drug release leads to significant side effects, impacting patient prognosis and treatment tolerance.

Purpose of the Study:

  • To develop a novel inactivated doxorubicin (DOX) prodrug system for targeted cancer therapy.
  • To achieve selective drug activation at the tumor site using light-induced caspase-3 enzyme.
  • To enhance therapeutic outcomes while minimizing adverse effects associated with traditional chemotherapy.

Main Methods:

  • Synthesis of an inactivated DOX prodrug encapsulated in nanoparticles.
  • Selective activation of the prodrug using laser irradiation at the tumor site.
  • Induction of reactive oxygen species (ROS) and caspase-3 activation for synergistic tumor damage.
  • In vitro and in vivo experiments to evaluate therapeutic efficacy and toxicity.

Main Results:

  • Nanoparticles remained inactive and uniformly dispersed under physiological conditions, avoiding systemic toxicity.
  • Laser irradiation triggered ROS production and caspase-3 activation, leading to selective DOX release.
  • Synergistic effect of released DOX and ROS demonstrated potent tumor damage.
  • Significant therapeutic outcomes with minimal adverse effects observed in both in vitro and in vivo models.

Conclusions:

  • The light-activated DOX prodrug strategy offers a promising approach to overcome the limitations of conventional chemotherapy.
  • Targeted drug delivery and activation significantly improve treatment efficacy and reduce systemic toxicity.
  • This innovative nanomedicine platform holds potential for improved cancer treatment and patient care.