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Iron and deferoxamine in lymphocyte blastogenesis
1Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205.
Journal of Immunopharmacology
|January 1, 1980
Summary
Iron is essential for lymphocyte proliferation during immune responses. This study shows iron accumulation correlates with DNA synthesis and that iron chelation inhibits this process, suggesting a role in immune deficiency.
Area of Science:
- Immunology
- Cell Biology
- Biochemistry
Background:
- Murine lymphocytes undergo blastogenesis, a process involving cellular proliferation and differentiation.
- Iron is a vital element involved in numerous cellular processes, including DNA synthesis.
Purpose of the Study:
- To investigate the role of iron in lymphocyte blastogenesis.
- To determine if iron accumulation is linked to DNA synthesis during immune activation.
Main Methods:
- Lymphocytes were cultured in vitro and exposed to radioactive iron (59Fe).
- Iron accumulation was measured over time and correlated with DNA synthesis activity.
- The effect of deferoxamine, an iron chelator, on blastogenesis was assessed.
Main Results:
- Murine lymphocytes accumulated 59Fe during blastogenesis.
- Iron accumulation correlated with the peak of DNA synthesis.
- Deferoxamine inhibited blastogenesis with a 50% inhibitory concentration of 5 microM.
Conclusions:
- Iron is necessary for the blastogenic response of murine lymphocytes.
- These findings suggest a potential mechanism linking iron deficiency anemia to immune deficiency.