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Updated: Jul 6, 2026
09:15
Induction of Eryptosis in Red Blood Cells Using a Calcium Ionophore
Published on: January 21, 2020
Vanadate-induced suicidal erythrocyte death.
Michael Föller1, Mentor Sopjani, Hasan Mahmud
1Department of Physiology, University of Tübingen, Tübingen, Germany.
Kidney & Blood Pressure Research
|March 6, 2008
Summary
Vanadate (VO4(3-)) exposure triggers eryptosis, or red blood cell suicide, by increasing intracellular calcium. This process may contribute to anemia in chronic kidney disease patients due to impaired vanadate excretion.
Area of Science:
- Biochemistry
- Cell Biology
- Toxicology
Background:
- Vanadate (VO4(3-)) is a trace element that inhibits key enzymes like ATPases.
- Impaired kidney function leads to vanadate accumulation in the blood.
- Eryptosis, or red blood cell suicidal death, involves cell shrinkage and phosphatidylserine exposure.
Purpose of the Study:
- To investigate the effects of vanadate on eryptosis.
- To determine the role of cytosolic calcium concentration in vanadate-induced eryptosis.
Main Methods:
- Flow cytometry (FACS) was used to analyze erythrocyte volume (forward scatter).
- Fluo-3 fluorescence measured cytosolic Ca2+ concentration.
- Annexin V-binding assessed phosphatidylserine exposure.
Main Results:
- Vanadate exposure increased cytosolic Ca2+ concentration in erythrocytes.
- Increased phosphatidylserine exposure and cell shrinkage were observed.
- Intracellular ATP concentration was reduced following vanadate exposure.
Conclusions:
- Vanadate induces eryptosis, partly by increasing cytosolic Ca2+ concentration.
- Vanadate-induced eryptosis may contribute to anemia in chronic renal failure.
- Understanding vanadate toxicity is crucial for managing renal insufficiency.
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