Abstract:
:The distinct hormone molecules and receptors, such as follicle-stimulating hormone receptor (FSHR) in ovarian cancer, provide opportunities for more precisely targeted therapy. We previously developed FSHR-mediated nanoparticles and found that FSH peptides on the surface of nanoparticles improved the delivery of short interfering RNA (siRNA) into ovarian cancer cells. However, the high toxicity of the nanoparticles and the transient silencing of the siRNA in vivo limited further study. Here, we developed FSH peptide-conjugated nanoparticles with an increased amount of polyethylene glycol (PEG) grafting and encapsulated short hairpin RNA (shRNA) to silence the target gene, growth-regulated oncogene α (gro-α). The nanoparticle complexes exhibited good stability over three weeks. Expression of the target gene, gro-α, was significantly down-regulated by gro-α shRNA-loaded nanoparticles conjugated with FSH peptides (FSH33-G-NP) in FSHR-positive HEY cells. Cell proliferation, migration, and invasion were also inhibited by FSH33-G-NP. Tumor growth was delayed significantly in the mice treated with FSH33-G-NP. No significant loss of body weight or severe toxic effects were observed in any groups. In conclusion, gro-α shRNA-loaded nanoparticles conjugated with FSH peptides overcame the drawbacks of the in vivo application of RNAi therapeutics and polymer-based nanocarriers and showed safe antitumor efficacy. Our study might contribute to the application of FSHR-based targeted therapy and imaging in cancer.
journal_name
Drug Delivjournal_title
Drug deliveryauthors
Hong SS,Zhang MX,Zhang M,Yu Y,Chen J,Zhang XY,Xu CJdoi
10.1080/10717544.2018.1440667subject
Has Abstractpub_date
2018-11-01 00:00:00pages
576-584issue
1eissn
1071-7544issn
1521-0464journal_volume
25pub_type
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