Enhanced effect of photodynamic therapy in ovarian cancer using a nanoparticle drug delivery system.

Abstract

Nanoparticles are promising novel drug delivery carriers that allow tumor targeting and controlled drug release. In the present study, we prepared poly butyl-cyanoacrylate nanoparticles (PBCA-NP) entrapped with hypocrellin B (HB) to improve the effect of photodynamic therapy (PDT) in ovarian cancer. An ovarian cancer ascites model using Fischer 344 rats and PBCA-NP entrapped with HB (HB-PBCA-NP) were formed successfully. The pharmacodynamic characteristics and biodistribution of the HB-PBCA-NP system were evaluated by comparison with HB dimethyl sulfoxide (HB-DMSO) and testing at various time-points following intraperitoneal drug administration. HB-PBCA-NP-based PDT combined with cytoreductive surgery was then administrated to the tumor-bearing animals. Kaplan-Meier survival analysis was performed to assess the therapeutic effect of the nanoparticle system. The serum HB concentration peaked 4 h after drug administration in the nanoparticle system, and 1 h with HB-DMSO. The peak exposure time of tumor tissues was also extended (4 vs. 2 h), and PBCA-NP remained present for much longer than HB-DMSO. Although PDT combined with surgery prolonged the survival time significantly compared with surgery alone (84 days, P<0.05), there was no significant difference in the survival time of animals that received either HB-PBCA-NP- or HB-DMSO-based PDT after cytoreductive surgery (99 vs. 95 days, P=0.293). PBCA-NP exhibited potential advantages in controlled drug release and tumor targeting, which was beneficial for HB-based PDT. PDT combined with surgery prolonged the survival time, suggesting that this might be an alternative treatment option for ovarian cancer.

• Authors: Zhao Li, Liping Sun, Zaijun Lu, Xuantao Su, Qifeng Yang, Xun Qu, Li Li, Kun Song, Beihua Kong
• Journal: International journal of oncology (Int J Oncol) Vol. 47 Issue 3 Pg. 1070-6 (Sep 2015) ISSN: 1791-2423 [Electronic] Greece
• PMID: 26165140 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Photosensitizing Agents
• Quinones
• Perylene
• Enbucrilate
• hypocrellin B
• Dimethyl Sulfoxide

Topics

• Animals
• Cell Line, Tumor
• Combined Modality Therapy
• Dimethyl Sulfoxide (chemistry)
• Enbucrilate (chemistry)
• Female
• Injections, Intraperitoneal
• Nanoparticles (administration & dosage, chemistry)
• Ovarian Neoplasms (drug therapy, surgery)
• Perylene (administration & dosage, analogs & derivatives, pharmacokinetics)
• Photochemotherapy (methods)
• Photosensitizing Agents (administration & dosage, pharmacokinetics)
• Quinones (administration & dosage, pharmacokinetics)
• Rats
• Tissue Distribution
• Treatment Outcome