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Iron in the Tumor Microenvironment-Connecting the Dots
Christa Pfeifhofer-Obermair1, Piotr Tymoszuk1, Verena Petzer1
1Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, Innsbruck, Austria.
Frontiers in Oncology
|December 12, 2018
Summary
Iron is crucial for cancer cell growth and immune response. Inappropriate iron supplementation can harm cancer patients, while cancer alters iron levels, potentially causing anemia and impairing immune function.
Area of Science:
- Oncology
- Hematology
- Molecular Biology
Background:
- Iron metabolism is closely intertwined with tumor biology.
- Iron influences cell death pathways like ferroptosis and contributes to cancer development.
- Cancer cells have high iron demands for proliferation, and iron impacts immune surveillance.
Purpose of the Study:
- To review the complex relationship between iron homeostasis and cancer.
- To discuss controversies in treating cancer-associated anemia.
- To explore iron's role in the tumor microenvironment and potential molecular mechanisms.
Main Methods:
- Literature review of iron metabolism in cancer.
- Analysis of immune system regulation by iron in malignancy.
- Discussion of clinical implications and controversies.
Main Results:
- Iron's dual role in promoting cancer progression and mediating cell death.
- Cancer-induced alterations in systemic iron homeostasis and immune cell function.
- Iron dysregulation contributes to anemia of cancer and impacts tumor immunity.
Conclusions:
- Iron supplementation in cancer requires careful consideration due to potential adverse effects.
- Understanding iron's role in the tumor microenvironment is critical for novel therapeutic strategies.
- Further research is needed to elucidate unknown molecular mechanisms of iron in cancer.
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