![](https://radiology.weill.cornell.edu/sites/default/files/styles/media_album_image/public/wcm_slide_images/seung_koo_lee_lab_banner_1.png?itok=0Cr7biXp)
Tracking cell fate with imaging nanoprobe of two optically quenched polyelectrolytes
Multilayered nanoprobe using poly-D-lysine (PDL)–fluorescein isothiocyanate (FITC)/poly-L-lysine (PLL)-cyanine dye 5.5 (cy5.5) and poly (acrylic acid) (PAA) as charged polyelectrolytes. (Nat. Commun.: Oct 17, 2014)
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Life-to-death imaging
Cell fate imaging probe in vitro and in vivo
![](https://radiology.weill.cornell.edu/sites/default/files/styles/media_album_image/public/wcm_slide_images/carousel_image_3_sk_lee_site.png?itok=q_bVF4rA)
Gene silencing by multilayered, siRNA-coated gold nanoparticles
Preparation of multi-layered small interfering RNA (siRNA)-coated gold nanoparticles (sRAuNPs) using siRNA and poly-L-lysine (PLL) as the charged electrolytes