Abstract:
:Hypoxic microenvironment commonly occurred in the solid tumors considerably decreases the chemosensitivity of cancer cells. Salidroside (Sal), the main active ingredient of Rhodiola rosea, was shown to be able of regulating the tumor hypoxia micro-environment and enhancing the chemotherapeutic efficacy of drug-resistant cancer. Therefore, in this study, the Sal was co-loaded with Apatinib (Apa) by the PLGA-based nanoparticles (NPs) to improve the chemosensitivity of gastric cancer cells. Additionally, to improve the drug delivery efficacy, the tumor-homing peptide (iVR1 peptides) was further decorated on the surface of NPs. The tumor targeting ability of the peptides-functionalized nanoparticles (iVR1-NPs-Apa/Sal) was evaluated by in vitro and in vivo experiments. As the obtained results revealed that the iVR1-NPs-Apa/Sal displayed excellent tumor affinity than the unmodified ones (NPs-Apa/Sal), which in turn resulted in more efficient of anti-proliferation of gastric cancer cells and anti-tumor effect in vivo. In addition, compared with the cells or tumor-bearing mice only treaded by monotherapy of Apa, the cells or mice received combinational treatment of Apa and Sal showed obvious lower rate of growth, invasion, and migration or tumor growth and progress. Underlying mechanisms were further investigated and it was revealed that the anti-gastric cancer effect of Apa was signally improved by Sal through down-regulation the proliferation factors and increase the pro-apoptotic genes, as well as reprograming the tumor hypoxia micro-environment. In a word, the study showed that the Sal was able of improving the chemosensitivity of gastric cancer to Apa and the iVR1-NPs-Apa/Sal was capable of realizing highly efficient of tumor-targeting drug delivery.
journal_name
Drug Delivjournal_title
Drug deliveryauthors
Zhang Z,Yang W,Ma F,Ma Q,Zhang B,Zhang Y,Liu Y,Liu H,Hua Ydoi
10.1080/10717544.2020.1754528subject
Has Abstractpub_date
2020-12-01 00:00:00pages
691-702issue
1eissn
1071-7544issn
1521-0464journal_volume
27pub_type
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