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2015 ; 5
(ä): 10726
Nephropedia Template TP
gab.com Text
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English Wikipedia
Regression of Gastric Cancer by Systemic Injection of RNA Nanoparticles Carrying
both Ligand and siRNA
#MMPMID26137913
Cui D
; Zhang C
; Liu B
; Shu Y
; Du T
; Shu D
; Wang K
; Dai F
; Liu Y
; Li C
; Pan F
; Yang Y
; Ni J
; Li H
; Brand-Saberi B
; Guo P
Sci Rep
2015[Jul]; 5
(ä): 10726
PMID26137913
show ga
Gastric cancer is the second leading cause of cancer-related death worldwide. RNA
nanotechnology has recently emerged as an important field due to recent finding
of its high thermodynamic stability, favorable and distinctive in vivo
attributes. Here we reported the use of the thermostable three-way junction (3WJ)
of bacteriophage phi29 motor pRNA to escort folic acid, a fluorescent image
marker and BRCAA1 siRNA for targeting, imaging, delivery, gene silencing and
regression of gastric cancer in animal models. In vitro assay revealed that the
RNA nanoparticles specifically bind to gastric cancer cells, and knock-down the
BRCAA1 gene. Apoptosis of gastric cancer cells was observed. Animal trials
confirmed that these RNA nanoparticles could be used to image gastric cancer in
vivo, while showing little accumulation in crucial organs and tissues. The volume
of gastric tumors noticeably decreased during the course of treatment. No damage
to important organs by RNA nanoparticles was detectible. All the results
indicated that this novel RNA nanotechnology can overcome conventional cancer
therapeutic limitations and opens new opportunities for specific delivery of
therapeutics to stomach cancer without damaging normal cells and tissues, reduce
the toxicity and side effect, improve the therapeutic effect, and exhibit great
potential in clinical tumor therapy.