Preeclampsia is one of the most serious
pregnancy complications. Many animal models have already been developed by researchers to study the pathogenesis and treatment of
preeclampsia. However, most of these animal models were established by systemic administration or by surgery in the uterine cavity, which could lead to unwanted systemic toxicity or operative
wounds and affect the accuracy of the results. Because of the high expression level of
integrin αvβ3 on the placenta,
arginine-glycine-aspartic acid peptide (RGD) modified PEGylated cationic
liposome (RGD-Lip) was designed as a novel gene delivery system to target the placenta safely and efficiently, and a new animal model of
preeclampsia was established through targeting of
long noncoding RNA (
lncRNA). The results of cellular uptake and endosomal localization showed that RGD-Lip enhanced cellular uptake and endosomal escape of
small interfering RNA (
siRNA) on HTR-8/SVneo. In vivo imaging revealed that RGD-Lip was selectively delivered to the placenta. Additionally, H19x
siRNA was efficiently transferred into the placenta of C57BL/6 mice via the injection of H19x
siRNA-loaded RGD-Lip, which could result in the occurrence of
preeclampsia-like symptoms. In summary, RGD-Lip provided a platform to efficiently deliver
siRNA to the placenta, and a new
preeclampsia-like mouse model was developed targeting placenta enriched/specific genes, including noncoding RNAs.