Expression of cyclin A, B1 and D1 after induction of cell cycle arrest in the Jurkat cell line exposed to doxorubicin

• DOI: 10.1042/cbi20120274
• Publication Date: 2012-09-07T11:50:25Z
• Authors: Agnieszka Żuryń; Anna Litwiniec; Lidia Gackowska; Andrzej Pawlik; Aleksandra Antoni...; Alina Grzanka
• Keywords: 0301 basic medicine; Antibiotics, Antineoplastic; Leukemia, T-Cell; Cell Death; Gene Expression Regulation, Leukemic; Cell Cycle Checkpoints; Cyclin A; 3. Good health; Jurkat Cells; 03 medical and health sciences; Doxorubicin; Humans; Cyclin D1; Cyclin B1

AbstractJurkat human lymphoblastoid cells were incubated in increasing concentrations of doxorubicin (0.05, 0.1 and 0.15 μM) to induce cell death, and their expression of cyclin A, B1 and D1 was evaluated by flow cytometry (cell cycle progression, Annexin V assay, percentages and levels of each of the cyclins), transmission electron microscopy (ultrastructure) and confocal fluorescence microscopy (expression and intracellular localization of cyclins). After low‐dose doxorubicin treatment, Jurkat cells responded mainly by G2/M arrest, which was related to increased cyclin B1, A and D1 levels, a low level of apoptosis and/or mitotic catastrophe. The influence of doxorubicin on levels and/or localization of selected cyclins was confirmed, which may in turn contribute to the G2/M arrest induced by the drug.