Bioconjugated PLGA-4-arm-PEG branched polymeric nanoparticles as novel tumor targeting carriers

Hong Ding, Ken Tye Yong, Indrajit Roy, Rui Hu, Fang Wu, Lingling Zhao, Wing Cheung Law, Weiwei Zhao, Wei Ji, Liwei Liu, Earl J. Bergey, Paras N. Prasad

Research output: Journal article publicationJournal articleAcademic researchpeer-review

46 Citations (Scopus)


In this study, we have developed a novel carrier, micelle-type bioconjugated PLGA-4-arm-PEG branched polymeric nanoparticles (NPs), for the detection and treatment of pancreatic cancer. These NPs contained 4-arm-PEG as corona, and PLGA as core, the particle surface was conjugated with cyclo(arginine-glycine-aspartate) (cRGD) as ligand for invivo tumor targeting. The hydrodynamic size of the NPs was determined to be 150-180nm and the critical micellar concentration (CMC) was estimated to be 10.5mgl-1. Our invitro study shows that these NPs by themselves had negligible cytotoxicity to human pancreatic cancer (Panc-1) and human glioblastoma (U87) cell lines. Near infrared (NIR) microscopy and flow cytometry demonstrated that the cRGD conjugated PLGA-4-arm-PEG polymeric NPs were taken up more efficiently by U87MG glioma cells, over-expressing the αvβ3integrin, when compared with the non-targeted NPs. Whole body imaging showed that the cRGD conjugated PLGA-4-arm-PEG branched polymeric NPs had the highest accumulation in the pancreatic tumor site of mice at 48h post-injection. Physical, hematological, and pathological assays indicated low invivo toxicity of this NP formulation. These studies on the ability of these bioconjugated PLGA-4-arm-PEG polymeric NPs suggest that the prepared polymeric NPs may serve as a promising platform for detection and targeted drug delivery for pancreatic cancer.
Original languageEnglish
Article number165101
Issue number16
Publication statusPublished - 22 Apr 2011
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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