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[Modulation of bcl-2 antisense RNA on programmed cell death of leukemic cell line]
1Department of Hematology, Xijing Hospital, Fourth Military Medical University, Xi'an.
Objective:
To investigate modulation of decrease of intrinsic bcl-2 protein levels on programmed cell death of leukemia cells.
Method:
Gene transfection procedure was applied to observe the effect of antisense RNA-mediated suppression of bcl-2 gene expression on programmed cell death of human T-lymphocytic leukemia cell line CEM.
Results:
Temporary expression of antisense bcl-2 gene could effectively reduce levels of intrinsic bcl-2 protein of CEM cells and render it more sensitive to etoposide-induced cytotoxicity. Moreover, a great deal of apoptotic bodies and ladder DNA was always produced during etoposide-mediated killing of CEM and when CEM expressing bcl-2 antisense RNA served as target cells in particular, the amount of ladder DNA increased to around 40%.
Conclusion:
Programmed cell death is one of the mechanisms by which etoposide kills leukemic cells and is modulated by cellular intrinsic bcl-2 protein.
Insights
Reducing bcl-2 protein levels enhances programmed cell death in leukemia cells treated with etoposide. This modulation increases sensitivity to chemotherapy, offering a potential therapeutic strategy for leukemia.
Area of Science:
- Molecular Biology
- Cell Biology
- Cancer Research