Abstract
Chronic lymphocytic leukemia (CLL) is a blood malignancy that is characterized by remarkable expression of CD69 and Ki67 in CLL cells. Elevated levels of Cleaved-Poly (ADP-ribose) polymerase-1 (PARP1) and microRNA-155 (MiR-155) are related to poor prognosis of disease. Berberine as a natural isoquinoline alkaloid, has shown an anti-tumor potential in tumor cells. The objective of present study was to explore some aspects of molecular mechanisms of berberine effect in CLL cells. To analyze the expression of CD69 and Ki67 using flow cytometry, 16 peripheral blood samples and seven bone marrow aspirates were collected from CLL patients. Isolated peripheral blood mononuclear cells (PBMCs) and bone marrow mononuclear cells (BMMCs) were treated with 25 µM of berberine for 24 h. The level of miR-155 expression was subsequently evaluated by real-time PCR. Furthermore, western blot was used for assessment of cleaved PARP1. Our results demonstrated a significant reduction in CD69 and Ki67 expression on CD19+ cells when the cells were treated by berberine. Interestingly, the expression level of miR-155 was reduced after berberine treatment in compare to the control group. Furthermore, western blotting revealed an increased level of cleaved PARP1 in dose-dependently manner in CLL cells. The results confirmed the anti-tumor impact of berberine on CLL cells through reducing CD69, Ki67, and miR-155 expression and increasing cleaved PARP1 may be considered as an option for future clinical studies.
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Acknowledgements
We would like to express our sincere gratitude to the Clinical Research Development Unit of Kosar Hospital and Semnan University of Medical Sciences for cooperation in this work.
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This work was supported by a grant from Semnan University of Medical Sciences (Grant No.1490).
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PK and FG conceived and planned the experiments. MA, MM, MH, and EMD carried out the experiments. MA wrote the manuscript. MA, MM, and MAS contributed to sample preparation. RB analyzed the results. RB and PK contributed to the interpretation of the results. All authors provided critical feedback and helped shape the research, analysis, and manuscript.
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The study complied with the guidelines for human studies and was conducted in accordance with the World Medical Association Declaration of Helsinki. The study protocol was approved by the Ethical Board of the Semnan University of Medical Sciences (IR.SEMUMS.REC.1379.181).
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Abdollahi, M., Mohammadlou, M., Hemati, M. et al. Anti-tumor effect of berberine on chronic lymphocytic leukemia cells. Med Oncol 39, 217 (2022). https://doi.org/10.1007/s12032-022-01818-5
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DOI: https://doi.org/10.1007/s12032-022-01818-5