Instantaneous pH-Boosted Functionalization of Stellate Gold Nanoparticles for Intracellular Imaging of miRNA

Jisun Ki, Eunji Jang, Seungmin Han, Moo Kwang Shin, Byunghoon Kang, Yong Min Huh, Seungjoo Haam

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Various types of nanoprobes have recently been utilized to monitor living organisms by detecting and imaging intracellular biomarkers, such as microRNAs (miRs). We here present a simple one-pot method to prepare stellate gold nanoparticles functionalized with miR-detecting molecular beacons (SGNP-MBs); low pH conditions permitted the rapid-high loading of MBs on the surface of SGNPs. Compared to the conventional gold nanoparticle-based MBs, SGNPs carried a 4.5-fold higher load of MBs and exhibited a 6.4-fold higher cellular uptake. We demonstrated that SGNP-MBs were successfully internalized in human gastric cancer cell lines and could be used to accurately detect and image intracellular miRs in an miR-specific manner. Furthermore, the relative levels of intracellular miRs in three different cell lines expressing miR-10b (high, moderate, and low levels) could be monitored using SGNP-MBs. Consequently, these results indicated that SGNP-MBs could have applications as highly potent, efficient nanoprobes to assess intracellular miR levels in living cells.

Original languageEnglish
Pages (from-to)17702-17709
Number of pages8
JournalACS Applied Materials and Interfaces
Volume9
Issue number21
DOIs
Publication statusPublished - 2017 May 31

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MicroRNAs
Gold
Nanoprobes
Nanoparticles
Imaging techniques
Cells
Biomarkers

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Ki, Jisun ; Jang, Eunji ; Han, Seungmin ; Shin, Moo Kwang ; Kang, Byunghoon ; Huh, Yong Min ; Haam, Seungjoo. / Instantaneous pH-Boosted Functionalization of Stellate Gold Nanoparticles for Intracellular Imaging of miRNA. In: ACS Applied Materials and Interfaces. 2017 ; Vol. 9, No. 21. pp. 17702-17709.
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Instantaneous pH-Boosted Functionalization of Stellate Gold Nanoparticles for Intracellular Imaging of miRNA. / Ki, Jisun; Jang, Eunji; Han, Seungmin; Shin, Moo Kwang; Kang, Byunghoon; Huh, Yong Min; Haam, Seungjoo.

In: ACS Applied Materials and Interfaces, Vol. 9, No. 21, 31.05.2017, p. 17702-17709.

Research output: Contribution to journalArticle

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