Preservation of DNA Nanostructure Carriers: Effects of Freeze-Thawing and Ionic Strength during Lyophilization and Storage

  • Bing Zhu
  • , Yan Zhao
  • , Jiangbing Dai
  • , Jianbang Wang
  • , Shu Xing
  • , Linjie Guo
  • , Nan Chen
  • , Xiangmeng Qu
  • , Li Li
  • , Juwen Shen
  • , Jiye Shi
  • , Jiang Li*
  • , Lihua Wang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

DNA nanostructures have attracted wide interest in biomedical applications, especially as nanocarriers for drug delivery. Therefore, it is important to ensure the structural integrity of DNA nanostructures under ambient temperature storage. In this study, we examined lyophilization-based preservation of DNA nanostructures by investigating the structural integrity of different DNA nanostructures reconstituted from lyophilization. We demonstrated that lyophilization under appropriate ionic strength is amenable to the storage of DNA nanostructures. Compared with that stored in liquid solution, DNA nanostructure carriers reconstituted from lyophilization showed significantly better structural integrity after an accelerated aging test equivalent to 100-day room-temperature storage.

Original languageEnglish
Pages (from-to)18434-18439
Number of pages6
JournalACS Applied Materials and Interfaces
Volume9
Issue number22
DOIs
StatePublished - 7 Jun 2017

Keywords

  • DNA nanostructures
  • ionic strength
  • lyophilization
  • storage
  • structure friendly

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