Discovery and in vivo evaluation of novel RGD-modified lipid-polymer hybrid nanoparticles for targeted drug delivery

Int J Mol Sci. 2014 Sep 29;15(10):17565-76. doi: 10.3390/ijms151017565.

Abstract

In the current study, the lipid-shell and polymer-core hybrid nanoparticles (lpNPs) modified by Arg-Gly-Asp(RGD) peptide, loaded with curcumin (Cur), were developed by emulsification-solvent volatilization method. The RGD-modified hybrid nanoparticles (RGD-lpNPs) could overcome the poor water solubility of Cur to meet the requirement of intravenous administration and tumor active targeting. The obtained optimal RGD-lpNPs, composed of PLGA (poly(lactic-co-glycolic acid))-mPEG (methoxyl poly(ethylene- glycol)), RGD-polyethylene glycol (PEG)-cholesterol (Chol) copolymers and lipids, had good entrapment efficiency, submicron size and negatively neutral surface charge. The core-shell structure of RGD-lpNPs was verified by TEM. Cytotoxicity analysis demonstrated that the RGD-lpNPs encapsulated Cur retained potent anti-tumor effects. Flow cytometry analysis revealed the cellular uptake of Cur encapsulated in the RGD-lpNPs was increased for human umbilical vein endothelial cells (HUVEC). Furthermore, Cur loaded RGD-lpNPs were more effective in inhibiting tumor growth in a subcutaneous B16 melanoma tumor model. The results of immunofluorescent and immunohistochemical studies by Cur loaded RGD-lpNPs therapies indicated that more apoptotic cells, fewer microvessels, and fewer proliferation-positive cells were observed. In conclusion, RGD-lpNPs encapsulating Cur were developed with enhanced anti-tumor activity in melanoma, and Cur loaded RGD-lpNPs represent an excellent tumor targeted formulation of Cur which might be an attractive candidate for cancer therapy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antineoplastic Agents / administration & dosage
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology
  • Apoptosis / drug effects
  • Cell Line, Tumor
  • Cholesterol / analogs & derivatives
  • Cholesterol / chemistry
  • Curcumin / administration & dosage
  • Curcumin / chemistry
  • Curcumin / pharmacology
  • Drug Carriers / chemistry*
  • Drug Evaluation, Preclinical
  • Female
  • Human Umbilical Vein Endothelial Cells
  • Humans
  • Lactic Acid / chemistry
  • Lipids / chemistry*
  • Melanoma / drug therapy
  • Melanoma / metabolism
  • Melanoma / pathology
  • Mice
  • Mice, Inbred BALB C
  • Nanoparticles / chemistry*
  • Oligopeptides / chemistry*
  • Polyesters
  • Polyethylene Glycols / chemistry
  • Polymers / chemistry*
  • Transplantation, Homologous

Substances

  • Antineoplastic Agents
  • Drug Carriers
  • Lipids
  • Oligopeptides
  • Polyesters
  • Polymers
  • polyethylene glycol-cholesterol
  • Lactic Acid
  • Polyethylene Glycols
  • poly(lactide)
  • arginyl-glycyl-aspartic acid
  • Cholesterol
  • Curcumin