کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5033008 | 1370004 | 2017 | 11 صفحه PDF | دانلود رایگان |
Portal hypertension (PH), a leading cause of mortality in cirrhosis, lacks effective clinical therapeutic strategies. The increased thromboxane A2 (TXA2), derived primarily from the upregulation of cyclooxygenase-1 (COX-1) in cirrhotic liver sinusoidal endothelial cells (LSECs), is responsible for hepatic endothelial dysfunction and PH. Thus, blocking the COX-1 pathway in cirrhotic LSECs may benefit the treatment of PH. In this study, hyaluronate-graft-polyethylenimine (HA-PEI) was synthesized for the targeted delivery of COX-1 siRNA to LSECs. Compared to non-targeted PEI, HA-PEI mediated much more efficient siRNA delivery, which resulted in potent targeted gene silencing in LSECs. In vivo, HA-PEI notably increased the accumulation of siRNA along the sinusoidal lining of the liver, inhibited over-activation of the COX-1/TXA2 pathway in LSECs, and successfully reduced portal pressure in cirrhotic mice. These results highlight the potential of HA-PEI complexed siRNA to serve as a LSECs-specific nanomedical system for effective gene therapy in PH.
Graphical AbstractHyaluronate-graft-polyethylenimine (HA-PEI) was synthesized for targeted delivery of cyclooxygenase-1 (COX-1) siRNA to liver sinusoidal endothelial cells (LSECs) for the treatment of portal hypertension in cirrhotic mice. In vivo, HA-PEI remarkably increased the efficiency of siRNA delivery to liver sinusoidal endothelium, inhibited the over-activation of COX-1 pathway in LSECs, and successfully reduced the portal pressure in cirrhotic mice.169
Journal: Nanomedicine: Nanotechnology, Biology and Medicine - Volume 13, Issue 7, October 2017, Pages 2329-2339