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2015 ; 217
(ä): 42-52
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Delivery of siRNA via cationic Sterosomes to enhance osteogenic differentiation
of mesenchymal stem cells
#MMPMID26302903
Cui ZK
; Fan J
; Kim S
; Bezouglaia O
; Fartash A
; Wu BM
; Aghaloo T
; Lee M
J Control Release
2015[Nov]; 217
(ä): 42-52
PMID26302903
show ga
Noggin is a specific antagonist of bone morphogenetic proteins (BMPs) that can
prevent the interaction of BMPs with their receptors. RNA interfering molecules
have been used to downregulate noggin expression and thereby stimulate BMP
signaling and osteogenesis. Cationic liposomes are considered one of the most
efficient non-viral systems for gene delivery. In the past decade,
non-phospholipid liposomes (Sterosomes) formulated with single-chain amphiphiles
and high content of sterols have been developed. In particular, Sterosomes
composed of stearylamine (SA) and cholesterol (Chol) display distinct properties
compared with traditional phospholipid liposomes, including increased positive
surface charges and enhanced particle stability. Herein, we report SA/Chol
Sterosome and small interfering RNA (siRNA) complexes that significantly enhanced
cellular uptake and gene knockdown efficiencies in adipose derived mesenchymal
stem cells with minimal cytotoxicity compared with commercially available
lipofectamine 2000. Furthermore, we confirmed osteogenic efficacy of these
Sterosomes loaded with noggin siRNA in in vitro two- and three-dimensional
settings as well as in a mouse calvarial defect model. The delivery of siRNA via
novel SA/Chol Sterosomes presents a powerful method for efficient gene knockdown.
These distinct nanoparticles may present a promising alternative approach for
gene delivery.