PLGA Spherical Nucleic Acids

Shengshuang Zhu, Hang Xing, Pavlo Gordiichuk, Jungsoo Park, Chad A. Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


A new class of polymer spherical nucleic acid (SNA) conjugates comprised of poly(lactic-co-glycolic acid) (PLGA) nanoparticle (NP) cores is reported. The nucleic acid shell that defines the PLGA-SNA exhibits a half-life of more than 2 h in fetal bovine serum. Importantly, the PLGA-SNAs can be utilized to encapsulate a hydrophobic model drug, coumarin 6, which can then be released in a polymer composition-dependent tunable manner, while the dissociation rate of the nucleic acid shell remains relatively constant, regardless of core composition. Like prototypical gold NP conjugate SNAs, PLGA-SNAs freely enter Raw-Blue cells and can be used to activate toll-like receptor 9 in a sequence- and dose-dependent manner. Taken together, the data show that this novel nanoconstruct provides a means for controlling the release kinetics of encapsulated cargos in the context of the SNA platform, which may be useful for developing combination therapeutics.

Original languageEnglish (US)
Article number1707113
JournalAdvanced Materials
Issue number22
StatePublished - May 29 2018


  • drug delivery
  • immunomodulation
  • nanomedicine
  • nucleic acid delivery

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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