Dexamethasone and c-myc in Human Leukaemia Cells
Author Information
Author(s): A.C. Wood, C.M. Waters, A. Garner, J.A. Hickman
Primary Institution: University of Manchester
Hypothesis
Changes in c-myc expression are required for the engagement of apoptosis of CEM cells.
Conclusion
The study found that changes in c-myc expression are not necessary for apoptosis in CCRF CEM cells induced by dexamethasone.
Supporting Evidence
- Apoptosis was characterized by intact plasma membranes and condensed chromatin.
- Cells required a minimum of 36 hours of dexamethasone exposure to begin apoptosis.
- c-myc protein was undetectable after 12 hours of treatment with dexamethasone.
- Cells became refractory to apoptosis before c-myc protein reappeared.
Takeaway
When human leukaemia cells are treated with a drug called dexamethasone, they can die in a specific way called apoptosis, but this doesn't depend on a protein called c-myc.
Methodology
The study involved treating CCRF CEM clone C7A cells with dexamethasone and measuring apoptosis and c-myc protein levels over time.
Limitations
The study did not establish a direct link between c-myc expression changes and apoptosis commitment.
Participant Demographics
Human lymphoid leukaemia cells (CCRF CEM clone C7A).
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