Abstract
Background
Breast cancer is an abnormal division of breast cells. Bisphenol A (BPA), an environmental toxicant, is identified as an emerging risk factor for breast cancer development. However, to the best of our knowledge, no previous study has investigated the BPA levels in breast cancer patients in Pakistan. The present study sought to explore the role of BPA in tumor growth among the Pakistani population.
Methods
The levels of BPA were analyzed in the serum samples of breast cancer patients and controls by using HPLC. To elucidate the role of BPA to initiate tumorigenic events in breast tissue different biochemical assays along with expression analysis of tumor markers were performed.
Results
The level of BPA in the serum samples of breast cancer patients was significantly higher than control. Histological analysis of breast cancer tissue samples revealed distinct subtypes of tumor, such as ductal carcinoma in situ (DCIS) and invasive ductal carcinoma (IDC). There was a significant increase in ROS level while a significant decrease in the levels of superoxide dismutase (SOD) and catalase (CAT) enzymes in malignant breast tissue samples as compared to control tissue samples. We found upregulated expression of p53, ZEB1 and WNT1 genes at mRNA level in malignant breast tissue samples by 17 folds, 328 folds and 35 folds, respectively. p53 protein expression in malignant breast tissue samples was also enhanced at the translational level.
Conclusion
Current findings suggest a relationship between BPA and the progression of breast cancer among the Pakistani population.
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Data availability statement
Data is presented in the manuscript and in the supplementary file. Any other raw data will also be provided on question from editorial staff.
Abbreviations
- BPA:
-
Bisphenol A
- EDC:
-
Endocrine-disrupting chemical
- DCIS:
-
Ductal carcinoma in situ
- IDC:
-
Invasive ductal carcinoma
- SOD:
-
Superoxide dismutase
- CAT:
-
Catalase
- ROS:
-
Reactive oxygen species
- ZEB1:
-
Zinc finger E-box binding protein 1
- EMT:
-
Epithelial to mesenchymal transition
- EPA:
-
Environmental protection agency
- WWF:
-
World Wide Fund for nature
- HPLC:
-
High-performance liquid chromatography
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Acknowledgements
Faculty of Biological Sciences Quaid-i-Azam University Islamabad, Higher Education Commission (HEC) Pakistan.
Funding
This work was supported by Higher Education Commission of Pakistan and Quaid-i-Azam University, URF (University research fund) to Dr. Iram Murtaza.
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Ayesha Ishtiaq (AI), Maryam Anayat Nasrullah (MAN), Jahangir Sarwar Khan (JSK), Sara Malik (SM), Usman Tareen (UT), Mariam Anees (MA), Aneesa Sultan (AS), Iram Murtaza (IM). AI, MAN, AS, and IM were involved in the conception and design of the study. AI, MAN, JSK, SM, UT, MA, AS, and IM were involved in the data execution and interpretation. AI, MAN, JSK, SM, UT, MA, AS, IM were involved in the investigation and methodology. AI, MAN, JSK, SM, UT, MA, AS, and IM were involved in the writing original draft writing. IM was involved in the funding acquisition, supervision, validation, review, and editing.
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All the experimental work was performed according to the guidelines of National Institute of Health, Islamabad after the Ethical approval from the Institutional Review Board of Quaid-i-Azam University, Islamabad.
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Ishtiaq, A., Nasrullah, M.A., Khan, J.S. et al. A cohort study investigating the role of Bisphenol A in the molecular pathogenesis of breast cancer. J Cancer Res Clin Oncol 149, 14565–14575 (2023). https://doi.org/10.1007/s00432-023-05247-3
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DOI: https://doi.org/10.1007/s00432-023-05247-3