AUTHOR=Guo Ting , Zhu Yinxing , Yue Miao , Wang Fujin , Li Zhifeng , Lin Mei 

TITLE=The Therapeutic Effects of DDP/CD44-shRNA Nanoliposomes in AMF on Ovarian Cancer

JOURNAL=Frontiers in Oncology

VOLUME=Volume 12 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2022.811783

DOI=10.3389/fonc.2022.811783

ISSN=2234-943X

ABSTRACT=Background: Globally, ovarian cancer is one of the most common gynecological malignant tumors and the overall curative effect has been unsatisfactory for years. Exploring and investigating novel therapeutic strategy for ovarian cancer is an imperative need. 
Methods: Using manganese zinc ferrite nanoparticles (PEG-MZF-NPs) as gene transferring vector and drug deliver carrier, a new combinatorial regimen to targetly treat ovarian cancer by integrating CD44-shRNA, DDP (cisplatin) and magnetic fluid hyperthermia (MFH) together was designed and investigated in vivo and in vitro in this study. 
Results: PEG-MZF-NPs/DDP/CD44-shRNA nanoliposomes were successfully prepared, and TEM detection indicated that they were 15-20nm in diameter, with good magnetothermal effect in AMF, similar to the previously prepared PEG-MZF-NPs. Under the action of AMF, PEG-MZF-NPs/shRNA/DDP nanoliposomes effectively inhibited ovarian tumors’ growth, and restrained the cancer cells’ proliferation and invasion, and promoted cell apoptosis, and VEGF, survivin, BCL-2 and BCL-xl proteins significantly decreased while Caspase-3 and Caspase-9 proteins markedly increased, far better than any of the individual therapies did. Moreover, no significant effects were found on bone marrow hematopoiesis and liver and kidney function of nude mice intervened by the combinatorial therapeutic regimen. 
Conclusion: In the present study, we developed PEG-MZF-NPs/DDP/CD44-shRNA magnetic nanoliposomes and inaugurated an integrated therapy through the synergistic effect of MFH, gene therapy, and chemotherapy, and it is shown a satisfactory therapeutic effect on ovarian cancer in vitro and in vivo, much better than any single treatment regimen did, with no significant side effects. This study provides a new promising method for ovarian cancer treatment.