Cancer Research and Treatment

Original Article

Blocking Interleukin-4 Receptor α Using Polyethylene Glycol Functionalized Superparamagnetic Iron Oxide Nanocarriers to Inhibit Breast Cancer Cell Proliferation: Abjal Pasha Shaik, Asma Sultana Shaik, Ali Al Majwal, Achraf Al Faraj; Cancer Res Treat. 2017;49(2):322-329. Published online July 12, 2016; DOI: https://doi.org/10.4143/crt.2016.091

Purpose
The specific targeting of interleukin-4 receptor α (IL4Rα) receptor offers a promising therapeutic approach for inhibition of tumor cell progression in breast cancer patients. In the current study, the in vitro efficacy of superparamagnetic iron oxide nanoparticles conjugated with anti-IL4Rα blocking antibodies (SPION-IL4Rα) via polyethylene glycol polymers was evaluated in 4T1 breast cancer cells.
Materials and Methods
Cell viability, reactive oxygen species generation, and apoptosis frequency were assessed in vitro in 4T1 cancer cell lines following exposure to SPION-IL4Rα alone or combined with doxorubicin. In addition, immunofluorescence assessments and fluorimetrywere performed to confirm the specific targeting and interaction of the developed nanocarriers with IL4Rα receptors in breast cancer cells.
Results
Blocking of IL4Rα receptors caused a significant decrease in cell viability and induced apoptosis in 4T1 cells. In addition, combined treatment with SPION-IL4Rα+doxorubicin caused significant increases in cell death, apoptosis, and oxidative stress compared to either SPION-IL4Rα or doxorubicin alone, indicating the enhanced therapeutic efficacy of this combination. The decrease in fluorescence intensity upon immunofluorescence and fluorimetry assays combined with increased viability and decreased apoptosis following the blocking of IL4Rα receptors confirmed the successful binding of the synthesized nanocarriers to the target sites on murine 4T1 breast cancerous cells.
Conclusion
These results suggest that SPION-IL4Rα nanocarriers might be used for successfulreduction of tumor growth and inhibition of progression of metastasis in vivo.

Citations

Citations to this article as recorded by

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