Modifying glycyrrhetinic acid liposomes with liver-targeting ligand of galactosylated derivative: preparation and evaluations
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Jing Chen1,*, Yuchao Chen1,*, Yi Cheng1, Youheng Gao1, Pinjing Zheng1, Chuangnan Li2, Yidan Tong1, Zhao Li1, Wenhui Luo3 and Zhao Chen3
1School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangdong, China
2The Second School of Clinic Medicine, Guangzhou University of Chinese Medicine, Guangdong, China
3Guangdong Second Traditional Chinese Medicine Hospital (Guangdong Research Institute of Traditional Chinese Medicine Engineering Technology), Guangdong, China
*These authors have equally contributed to this work
Yi Cheng, email: firstname.lastname@example.org
Youheng Gao, email: email@example.com
Keywords: liver-targeting; galactosylated derivative; glycyrrhetinic acid liposomes; liver disease therapeutic
Received: May 18, 2017 Accepted: August 26, 2017 Published: October 27, 2017
In this study, novel glycyrrhetinic acid (GA) liposomes modified with a liver-targeting galactosylated derivative ligand (Gal) were prepared using a film-dispersion method. To characterize the samples, particle size, zeta potential, drug loading, and encapsulation efficiency were performed. Moreover, plasma and tissues were pre-treated by liquid-liquid extraction and analyzed by high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS). The results showed that the mean residence times (MRTs) and the area under the curve (AUC) of GA liposomes with Gal (Gal-GA-LP), and GA liposomes (GA-LP) were higher than the GA solution (GA-S) in plasma. The tissue (liver) distribution of Gal-GA-LP was significantly different in contrast to GA-LP. The relative intake rate (Re) of Gal-GA-LP and GA-LP in the liver was 4.752 and 2.196, respectively. The peak concentration ratio (Ce) of Gal-GA-LP and GA-LP in the liver was 2.796 and 1.083, respectively. The targeting efficiency (Te) of Gal-GA-LP and GA-LP in the liver was 48.193% and 34.718%, respectively. Taken together, the results indicate that Gal-GA-LP is an ideal complex for liver-targeting, and has great potential application in the clinical treatment of hepatic diseases. Drug loading and releasing experiments also indicated that most liposomes are spherical structures and have good dispersity under physiologic conditions, which could prolong GA release efficiency in vitro.
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