Co-delivery of Poria cocos extract and doxorubicin as an 'all-in-one' nanocarrier to combat breast cancer multidrug resistance during chemotherapy

Nanomedicine. 2020 Jan:23:102095. doi: 10.1016/j.nano.2019.102095. Epub 2019 Oct 25.

Abstract

Recent studies have indicated that multidrug resistance (MDR) can significantly limit the effects of conventional chemotherapy. In this study, PT (Pachymic acid and dehydrotumulosic acid) are the two major triterpenoid components purified and identified in P. cocos. A liposomal co-delivery system encapsulating doxorubicin (DOX) and PT was prepared. Notably, the mechanism of PT reversed P-glycoprotein (P-gp) mediated MDR mainly relied on the inhibition of the P-gp function, which further decreased the levels of P-gp and caveolin-1 proteins. In drug-resistant MCF cells, co-administration with 5 μg/ml PT significantly enhanced sensitivity of DOX. Finally, liposome-mediated co-delivery with PT significantly improved the anti-tumor effect of DOX in tumor-bearing mice when compared to other single therapy groups. In conclusion, this study showed for the first time that DOX and PT act synergistically as an "all-in-one" treatment to reverse MDR during tumor treatment and, thus, should be studied further for a wide range of anti-cancer applications.

Keywords: Antitumor; Cancer; DOX; Nanomedicine; Reverse multidrug resistance; Triterpenoids.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antineoplastic Combined Chemotherapy Protocols* / chemistry
  • Antineoplastic Combined Chemotherapy Protocols* / pharmacology
  • Breast Neoplasms / drug therapy*
  • Breast Neoplasms / metabolism
  • Breast Neoplasms / pathology
  • Cell Line, Tumor
  • Doxorubicin / chemistry
  • Doxorubicin / pharmacology
  • Drug Carriers* / chemistry
  • Drug Carriers* / pharmacology
  • Drug Resistance, Multiple / drug effects*
  • Drug Resistance, Neoplasm / drug effects*
  • Female
  • Humans
  • Mice
  • Mice, Inbred BALB C
  • Mice, Nude
  • Nanoparticles* / chemistry
  • Nanoparticles* / therapeutic use
  • Plant Extracts / chemistry
  • Plant Extracts / pharmacology
  • Wolfiporia / chemistry
  • Xenograft Model Antitumor Assays

Substances

  • Drug Carriers
  • Plant Extracts
  • Doxorubicin