Title:Construction of GPC3-modified Lipopolymer SiRNA Delivery System
Volume: 30
Issue: 19
Author(s): Dandan Sun, Xiaoyu Li, Yaru Liu, Jishan Quan*Guangyu Jin*
Affiliation:
- College of Pharmacy, Yanbian University, Yanji 133000, Jilin Province, P.R. China
- Department of Radiology, Affiliated Hospital of Yanbian University, Yanji 133000, Jilin Province, P.R. China
Keywords:
GPC3-modified lipid polyethyleneimine-modified superparamagnetic nanoparticle (GLPS), gene carrier, transfection efficiency, gene therapy, therapeutic mechanism, hepatocellular carcinoma.
Abstract:
Background: Gene therapy has been widely concerned because of its unique therapeutic mechanism.
However, due to the lack of safe and effective carries, it has not been widely used in clinical practice.
Glypican 3 (GPC3) is a highly specific proteoglycan for hepatocellular carcinoma and is a potential diagnostic
and therapeutic target for hepatocellular carcinoma. Herein, to monitor the effect of gene therapy and enhance
the transfection efficiency of gene carriers, GPC3-modified lipid polyethyleneimine-modified superparamagnetic
nanoparticle (GLPS), a type of visualized carrier for siRNA (small-interfering RNA) targeting the liver,
was prepared.
Methods: We performed in vitro gene silencing, cytotoxicity, and agarose gel electrophoresis to identify the
optimal GLPS formulation. In vitro MRI and Prussian blue staining verified the liver-targeting function of
GLPS. We also analyzed the biocompatibility of GLPS by co-culturing with rabbit red blood cells. Morphological
changes were evaluated using HE staining.
Results: The GLPS optimal formulation consisted of LPS and siRNA at a mass ratio of 25:1 and LPS and
DSPE-PEG-GPC3 at a molar ratio of 2:3. GLPS exhibited evident liver-targeting function. In vitro, we did not
observe morphological changes in red blood cells or hemolysis after co-culture. In vivo, routine blood analysis
revealed no abnormalities after GLPS injection. Moreover, the tissue morphology of the kidney, spleen, and
liver was normal without injury or inflammation.
Conclusion: GLPS could potentially serve as an effective carrier for liver-targeted MRI monitoring and siRNA
delivery.