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Published on: July 30, 2014
Cultivation of WISH cells in medium containing actinomycin D
Abstract:
A dose of 0.0015 mug of Actinomycin D per 1 ml, applied for 4-5 days has some inhibitory effect on RNA and protein synthesis, leading to a diminished proliferation of WISH cells. This dose does not exert a destructive effect on cell morphology. Two to four times higher doses, applied for the same time were toxic. Morphological changes observed at various times of exposure of cells to different concentrations of drug as well as changes in cell proliferation are described. The attempts to select Actinomycin D-resistant cells have failed.
Insights
A low dose of Actinomycin D (0.0015 mug/ml) inhibits RNA and protein synthesis, slowing WISH cell proliferation without damaging cell structure. Higher doses proved toxic.
Area of Science:
- Cell biology
- Molecular pharmacology
- Drug toxicology
Background:
- Actinomycin D is a known inhibitor of transcription.
- Understanding its effects on cell proliferation and morphology is crucial for therapeutic applications and research.
- WISH cells are a commonly used human cell line in toxicological studies.
Purpose of the Study:
- To investigate the effects of low-dose Actinomycin D on WISH cell proliferation and morphology.
- To determine the toxicity threshold of Actinomycin D in WISH cells.
- To explore the possibility of developing Actinomycin D-resistant cell lines.
Main Methods:
- WISH cells were exposed to varying concentrations of Actinomycin D (0.0015 mug/ml and 2-4 times higher) for 4-5 days.
- Cell proliferation was assessed.
- Cell morphology was examined under microscopy.
- Attempts were made to select for Actinomycin D-resistant cells.
Main Results:
- A dose of 0.0015 mug/ml Actinomycin D demonstrated an inhibitory effect on RNA and protein synthesis, leading to reduced WISH cell proliferation.
- This low dose did not cause significant changes in cell morphology.
- Higher doses of Actinomycin D (2-4 times the initial dose) were toxic to the cells.
- Observed morphological changes and proliferation alterations were documented across different drug concentrations and exposure times.
- Attempts to select for Actinomycin D-resistant WISH cells were unsuccessful.
Conclusions:
- Low-dose Actinomycin D can inhibit WISH cell proliferation and synthesis without inducing cytotoxicity.
- Higher Actinomycin D concentrations exhibit significant toxicity.
- Developing Actinomycin D-resistant cell lines through selection appears challenging.
