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Utilizing Superoxide Dismutase Mimetics to Enhance Radiation Therapy Response While Protecting Normal Tissues
Journal article   Peer reviewed

Utilizing Superoxide Dismutase Mimetics to Enhance Radiation Therapy Response While Protecting Normal Tissues

Kranti A Mapuskar, Carryn M Anderson, Douglas R Spitz, Ines Batinic-Haberle, Bryan G Allen and Rebecca E Oberley-Deegan
Seminars in radiation oncology, Vol.29(1), pp.72-80
01/2019
DOI: 10.1016/j.semradonc.2018.10.005
PMCID: PMC6310053
PMID: 30573187

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Abstract

Symptomatic normal tissue injury is a common side effect following definitive therapeutic radiation and chemotherapy treatment for a variety of malignancies. These cancer therapy related toxicities may occur acutely during treatment resulting in reduced or missed therapy agent administration or after the completion of therapy resulting in significant chronic morbidities that significantly diminish patient quality of life. Radiation and chemotherapy induce the formation of reactive oxygen species (ROS) both in normal tissues and tumor cells. One type of ROS common to both chemotherapy and radiation therapy is the formation of superoxide (O ). Fortunately, due to metabolic differences between cancer and normal cell metabolism, as well as improved targeting techniques, ROS generation following radiation and chemotherapy is generally greater in cancer cells compared to normal tissues. However, the levels of ROS generated in normal tissues are capable of inducing significant toxicity. Thus, several groups are focusing on metabolism-based approaches to mitigate normal tissue effects occurring both during and following cancer therapy. This review will summarize the most current preclinical and clinical data available demonstrating the efficacy of small molecule, superoxide dismutase mimetics in minimizing radiation and chemotherapy-induced normal tissue injury, resulting in enhanced patient outcomes.
Neoplasms - metabolism Biomimetic Materials - pharmacology Reactive Oxygen Species - metabolism Superoxide Dismutase - pharmacology Humans Radiation-Sensitizing Agents - pharmacology Radiation-Protective Agents - pharmacology Neoplasms - radiotherapy

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