Characterization of 9-nitrocamptothecin Liposomes: Anticancer Properties and Mechanisms on Hepatocellular Carcinoma in Vitro and in Vivo
Overview
Authors
Affiliations
Background: Hepatocellular carcinoma (HCC) is the third most common cause of cancer related mortality worldwide. 9-Nitrocamptothecin (9NC) is a potent topoisomerase-I inhibitor with strong anticancer effect. To increase the solubility and stability, we synthesized a novel 9NC loaded liposomes (9NC-LP) via incorporating 9NC into liposomes. In the present study, we determined the effects of 9NC and 9NC-LP on in vitro and in vivo, and the underlying mechanisms.
Methodology/principal Findings: We first analyzed the characteristics of 9NC-LP. Then we compared the effects of 9NC and 9NC-LP on the proliferation and apoptosis of HepG2, Bel-7402, Hep3B and L02 cells in vitro. We also investigated their anticancer properties in nude mice bearing HCC xenograft in vivo. 9NC-LP has a uniform size (around 190 nm) and zeta potential (∼-11 mV), and exhibited a steady sustained-release pattern profile in vitro. Both 9NC and 9NC-LP could cause cell cycle arrest and apoptosis in a dose-dependent and p53-dependent manner. However, this effect was not ubiquitous in all cell lines. Exposure to 9NC-LP led to increased expression of p53, p21, p27, Bax, caspase-3, caspase-8, caspase-9 and apoptosis-inducing factor, mitochondrion-associated 1 and decreased expression of Bcl-2, cyclin E, cyclin A, Cdk2 and cyclin D1. Furthermore, 9NC-LP exhibited a more potent antiproliferative effect and less side effects in vivo. Western blot analysis of the xenograft tumors in nude mice showed similar changes in protein expression in vivo.
Conclusions/significance: In conclusion, 9NC and 9NC-LP can inhibit HCC growth via cell cycle arrest and induction of apoptosis. 9NC-LP has a more potent anti-tumor effect and fewer side effects in vivo, which means it is a promising reagent for cancer therapy via intravenous administration.
Kang C, Wang J, Li R, Gong J, Wang K, Wang Y Molecules. 2023; 28(16).
PMID: 37630208 PMC: 10459615. DOI: 10.3390/molecules28165955.
Mahmoud K, Swidan S, El-Nabarawi M, Teaima M J Nanobiotechnology. 2022; 20(1):109.
PMID: 35248080 PMC: 8898455. DOI: 10.1186/s12951-022-01309-9.
Ngan C, Asmawi A Drug Deliv Transl Res. 2018; 8(5):1527-1544.
PMID: 29881970 DOI: 10.1007/s13346-018-0550-4.
Gowda R, Dinavahi S, Iyer S, Banerjee S, Neves R, Pameijer C Nanomedicine. 2018; 14(3):863-873.
PMID: 29317343 PMC: 5899023. DOI: 10.1016/j.nano.2017.12.020.
Nanoparticle-Based Celecoxib and Plumbagin for the Synergistic Treatment of Melanoma.
Gowda R, Kardos G, Sharma A, Singh S, Robertson G Mol Cancer Ther. 2016; 16(3):440-452.
PMID: 28003325 PMC: 5821064. DOI: 10.1158/1535-7163.MCT-16-0285.