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Updated: Jul 3, 2025
Cellular Toxicity of Nanogenomedicine in MCF-7 Cell Line: MTT assay
Published on: April 3, 2009
Anticarcinogenic Effects of Gold Nanoparticles and Metformin Against MCF-7 and A549 Cells
Ali Yeşildağ1, Halime Topal Kızıloğlu2, Ebubekir Dirican3
1Department of Bioengineering, Faculty of Engineering and Architecture, Kafkas University, Kars, Turkey. aliyesildag@yahoo.com.
Abstract:
Metformin is commonly prescribed to people with diabetes. Metformin has been shown in previous studies to be able to prevent the growth of cancer cells. This study aims to investigate the effects of metformin and gold nanoparticles in MCF7 breast cancer and A549 lung cell lines. The effects of metformin and gold nanoparticles on MCF7 breast cancer and A549 lung cells were determined on cells grown in 24 h cell culture. MCF-7 and A549 cells were incubated for 24 h with the treatment of escalating molar concentrations of ifosfamide. The MTT assay was used to determine the cytotoxicity of metformin toward MCF7 and A549 cell lines. The expression of Bax, BCL2, PI3K, Akt3, mTOR, Hsp60, Hsp70, and TNF-α was measured by RT-PCR. Metformin and gold nanoparticles inhibited the proliferation of MCF-7 and A549 cells in a dose and time-dependent manner with an IC50 value of 5 µM and 10 µg/mL. RT-PCR assays showed ifosfamide + metformin + gold nanoparticles significantly reduced the expression of BCL2, PI3K, Akt3, mTOR, Hsp60 and Hsp70 and increased the expression of TNF-α and Bax. The findings obtained in this study suggest that further studies should be conducted, and metformin and gold nanoparticles can be used in breast cancer and lung cancer treatments.
Insights
Metformin and gold nanoparticles show promise in inhibiting breast and lung cancer cell growth. This combination therapy impacts key cancer-related gene expressions, suggesting potential for future cancer treatments.
Area of Science:
- Oncology
- Nanotechnology
- Molecular Biology
Background:
- Metformin, a diabetes drug, exhibits anti-cancer properties.
- Gold nanoparticles (AuNPs) are explored for their therapeutic potential in cancer.
- Breast (MCF-7) and lung (A549) cancer cell lines are common models for cancer research.
Purpose of the Study:
- To investigate the combined effects of metformin and gold nanoparticles on MCF-7 and A549 cancer cells.
- To evaluate the impact of this combination on cell proliferation and gene expression.
Main Methods:
- Cell culture of MCF-7 and A549 cell lines.
- MTT assay to determine cytotoxicity (IC50 values).
- RT-PCR to measure the expression of genes including Bax, BCL2, PI3K, Akt3, mTOR, Hsp60, Hsp70, and TNF-α.
Main Results:
- Metformin and gold nanoparticles demonstrated dose- and time-dependent inhibition of cancer cell proliferation.
- The combination therapy significantly reduced BCL2, PI3K, Akt3, mTOR, Hsp60, and Hsp70 expression.
- Increased expression of TNF-α and Bax was observed with the combined treatment.
Conclusions:
- Metformin and gold nanoparticles exhibit synergistic anti-cancer effects against breast and lung cancer cells.
- The combination therapy modulates key apoptotic and signaling pathways.
- Further research is warranted to explore the clinical application of metformin and gold nanoparticles in cancer treatment.
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