Delivery of siRNA Using Lipid Nanoparticles Modified with Cell Penetrating Peptide.
Clinical development of siRNA has been hindered by the lack of an effective delivery system. Here, we report the construction of a novel siRNA delivery system, sTOLP, which is based on cell penetrating peptide oleoyl-octaarginine (OA-R8) modified multifunctional lipid nanoparticles. sTOLP nanoparticles are composed of a protamine complexed siRNA core, OA-R8, cationic and PEGylated lipids, and transferrin as a targeting ligand. sTOLP formulation was optimized and characterized in vitro and showed excellent gene silencing activity. In vivo, siRNA encapsulated in sTOLP exhibited potent tumor inhibition (61.7%) and was preferentially taken up by hepatocytes and tumor cells in HepG2-bearing nude mice without inducing immunogenicity or hepatic or renal toxicity. Furthermore, sTOLP-loaded siRNA had stability in circulation greater than that of free siRNA. These data demonstrated potential utility of sTOLP-mediated siRNA delivery in cancer therapy.
School of Life Sciences, Jilin University , Changchun 130012, China.
Yuhuan
Y
Li
School of Life Sciences, Jilin University , Changchun 130012, China.|Division of Pharmaceutics, College of Pharmacy, The Ohio State University , Columbus, Ohio 43210, United States.
Robert J
RJ
Lee
School of Life Sciences, Jilin University , Changchun 130012, China.
Kongtong
K
Yu
School of Life Sciences, Jilin University , Changchun 130012, China.
Ye
Y
Bi
School of Life Sciences, Jilin University , Changchun 130012, China.
Yuhang
Y
Qi
School of Life Sciences, Jilin University , Changchun 130012, China.
Yating
Y
Sun
School of Life Sciences, Jilin University , Changchun 130012, China.
Yujing
Y
Li
School of Life Sciences, Jilin University , Changchun 130012, China.
Jing
J
Xie
School of Life Sciences, Jilin University , Changchun 130012, China.
Lesheng
L
Teng
D000818:Animals; D057846:Cell-Penetrating Peptides; D056945:Hep G2 Cells; D006801:Humans; D008055:Lipids; D051379:Mice; D008819:Mice, Nude; D053758:Nanoparticles; D034741:RNA, Small Interfering
D057846:Cell-Penetrating Peptides; D008055:Lipids; D034741:RNA, Small Interfering
cancer; cell penetrating peptide; drug delivery; lipid nanoparticles; multifunctional; siRNA