4.7 Article

Nanoparticle-based immunotherapy of breast cancer using recombinant Helicobacter pylori proteins

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ELSEVIER
DOI: 10.1016/j.ejpb.2020.08.013

关键词

Nano-drug Delivery; Chitosan; Immunotherapy; Nanobiotechnology; Breast Cancer; H. Pylori

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  1. Tarbiat Modares University

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Breast cancer is the most common cancer in women worldwide and is associated with substantial medical and economic burden. We report the development of a hybrid immunotherapeutic system based on recombinant Nap protein from Helicobacter pylori (HP-Nap) for the treatment of breast tumors. Chitosan nanoparticles with pseudo-spherical morphology and positive zeta potential were synthesized as carriers for HP-Nap. In vitro study was performed on mouse breast cancer cell line (4T1) and human breast cancer cell lines (MCF7). In vivo study was done on 4T1 tomural mice. TUNEL assay and real time PCR test were performed on tumor mice receiving the nanoparticle treatment. The nanoparticle-protein complex induced apoptosis in vitro in cultured breast cancer cells. In-vivo studies on inbred, female BALB/c mice confirmed the shrinkage of tumor mass after administration of the nanoparticle complex containing HP-Nap. The TUNEL assay further confirmed apoptosis in extracted mouse breast cancer cells. A decrease in the expression of VEGF and MMP9 genes was observed in 4T1 cells as shown by real time PCR. Our data suggesting that the therapeutic nanocomplex may have led to decreased tumor growth in mice through changing the production rate of cytokines and increasing tumoricidal activities of the immune system.

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