Heme Oxygenase as a Hypoxic Stress Protein in CHO Cells
Author Information
Author(s): B.J. Murphy, K.R. Laderoute, S.M. Short, R.M. Sutherland
Primary Institution: Department of Cancer Biology, Life Sciences Division, SRI International, Menlo Park, California, USA
Hypothesis
Is heme oxygenase a major hypoxic stress protein in Chinese hamster ovary cells?
Conclusion
Heme oxygenase is significantly induced in CHO cells under hypoxic conditions.
Supporting Evidence
- Heme oxygenase is induced in CHO cells under hypoxic stress.
- Induction of heme oxygenase was confirmed by both northern and western blotting.
- Protein levels of heme oxygenase increased approximately three-fold under hypoxia.
Takeaway
When cells don't get enough oxygen, they make more of a protein called heme oxygenase, which helps them deal with stress.
Methodology
CHO cells were exposed to hypoxia, and protein levels were analyzed using northern blotting and western blotting.
Limitations
The study does not clarify the direct relationship between heme oxygenase expression and drug resistance or radiation sensitivity.
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