Ironing out exercise on immuno-oncological outcomes
Janjira Soh1,2,3, Zi Xiang Lim1,2,3, Elaine Hsuen Lim4
1Centre for Healthy Longevity, National University Health System (NUHS), Singapore.
Journal for Immunotherapy of Cancer
|September 30, 2022
Summary
Regular exercise may inhibit cancer progression by altering iron metabolism and immune responses within the tumor microenvironment. This hypothesis explores how exercise impacts iron availability, influencing cancer cell survival and programmed cell death (ferroptosis).
Area of Science:
- Exercise oncology
- Cancer metabolism
- Immunology
Background:
- Physical exercise demonstrates beneficial effects in inhibiting cancer progression.
- The precise mechanisms, particularly concerning iron metabolism and immune-tumor crosstalk, remain largely unknown.
- Cancer cells exhibit heightened metabolic demands, relying heavily on iron for survival and proliferation.
Purpose of the Study:
- To hypothesize how exercise modulates cancer progression through systemic and cellular changes in iron metabolism.
- To explore the role of exercise in influencing immune-tumor crosstalk.
- To investigate the impact of exercise on iron bioavailability, transport, and metabolism within the tumor microenvironment.
Main Methods:
- This study presents a hypothesis based on existing evidence.
- It speculates on the interplay between exercise, iron metabolism, and cancer.
- It considers tumor-autonomous and stromal cell responses.
Main Results:
- Exercise may modulate iron bioavailability, transport, and metabolism.
- Altered iron metabolism can impact tumor cells and stromal cells within the tumor microenvironment.
- Exercise might influence ferroptosis, a form of iron-dependent programmed cell death.
Conclusions:
- Modulating iron metabolism via regular exercise could be a significant factor in cancer inhibition.
- Exercise may affect tumor progression by influencing iron-dependent cellular processes like ferroptosis.
- Further research is warranted to elucidate the specific mechanisms of exercise, iron metabolism, and immune-tumor interactions in cancer.
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