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Published on: July 28, 2023
Monitoring the Effect of Tributyltin Salicylate and Propionate, Retinoid X Receptor Ligands, on Heat Shock Protein
Dana Strouhalova1, Dana Macejova2, Julius Brtko2
1Institute of Analytical Chemistry of the CAS, Brno, Czech Republic.
Abstract:
Organotin (IV) compounds are known to induce apoptosis via the intrinsic mitochondrial pathway, which is a key mechanism of effective anticancer therapy. Their ability to selectively promote apoptotic cell death highlights their potential as chemotherapeutic agents. In this study, the in vitro effects of two triorganotin compounds, tributyltin propionate and tributyltin salicylate, on the human breast cancer cell line MDA-MB-231 were evaluated. In addition to their proven antitumor activity, these compounds may act as synthetic ligands for nuclear retinoid X receptors. Protein expression profiles were examined using gel electrophoresis and MALDI-TOF mass spectrometry, with a particular focus on heat shock proteins (HSPs), which are commonly overexpressed in cancer cells and contribute to tumor progression and therapeutic resistance. Both triorganotin derivatives significantly reduced HSP expression, suggesting that HSPs could be a promising target in cancer therapy.
Insights
Organotin compounds induce cancer cell death via mitochondrial apoptosis. This study shows tributyltin derivatives reduce heat shock proteins (HSPs) in breast cancer cells, suggesting HSPs as a potential therapeutic target.
Area of Science:
- Oncology
- Biochemistry
- Pharmacology
Background:
- Organotin (IV) compounds induce apoptosis through the intrinsic mitochondrial pathway, a crucial mechanism in cancer therapy.
- Heat shock proteins (HSPs) are frequently overexpressed in cancer, promoting tumor growth and resistance to treatment.
Purpose of the Study:
- To evaluate the in vitro effects of tributyltin propionate and tributyltin salicylate on the MDA-MB-231 human breast cancer cell line.
- To investigate the impact of these organotin compounds on heat shock protein (HSP) expression.
Main Methods:
- In vitro cell culture of the MDA-MB-231 human breast cancer cell line.
- Treatment with tributyltin propionate and tributyltin salicylate.
- Analysis of protein expression profiles using gel electrophoresis and MALDI-TOF mass spectrometry, focusing on HSPs.
Main Results:
- Both tributyltin derivatives demonstrated antitumor activity against MDA-MB-231 cells.
- Significant reduction in heat shock protein (HSP) expression was observed following treatment with both compounds.
- Organotin compounds may function as synthetic ligands for nuclear retinoid X receptors.
Conclusions:
- Triorganotin compounds exhibit potential as anticancer agents by inducing apoptosis.
- Targeting heat shock proteins (HSPs) represents a promising strategy in cancer therapy, potentially enhanced by organotin compounds.
