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Monitoring Stub1-Mediated Pexophagy
Published on: May 12, 2023
Mitochondrial peroxiredoxin III is a potential target for cancer therapy
In-Sung Song1, Hyoung-Kyu Kim, Seung-Hun Jeong
1National Research Laboratory for Mitochondrial Signaling, Department of Physiology, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 614-7-5, Korea; E-Mails: microvirus@hanmail.net (I.-S.S.); estrus74@gmail.com (H.-K.K.); shjeong96@gmail.com (S.-H.J.); lsr1113@hotmail.com (S.-R.L.); narikim43@gmail.com (N.K.); bdrhee@hanmail.net (B.D.R.); kskomd@paik.ac.kr (K.S.K.).
Abstract:
Mitochondria are involved either directly or indirectly in oncogenesis and the alteration of metabolism in cancer cells. Cancer cells contain large numbers of abnormal mitochondria and produce large amounts of reactive oxygen species (ROS). Oxidative stress is caused by an imbalance between the production of ROS and the antioxidant capacity of the cell. Several cancer therapies, such as chemotherapeutic drugs and radiation, disrupt mitochondrial homeostasis and release cytochrome c, leading to apoptosome formation, which activates the intrinsic pathway. This is modulated by the extent of mitochondrial oxidative stress. The peroxiredoxin (Prx) system is a cellular defense system against oxidative stress, and mitochondria in cancer cells are known to contain high levels of Prx III. Here, we review accumulating evidence suggesting that mitochondrial oxidative stress is involved in cancer, and discuss the role of the mitochondrial Prx III antioxidant system as a potential target for cancer therapy. We hope that this review will provide the basis for new strategic approaches in the development of effective cancer treatments.
Insights
Mitochondrial oxidative stress plays a key role in cancer development and progression. Targeting the mitochondrial peroxiredoxin III (Prx III) antioxidant system offers a promising new strategy for effective cancer therapy.
Area of Science:
- Mitochondrial biology and cancer research
Background:
- Mitochondria are crucial in cancer cell metabolism and oncogenesis.
- Cancer cells exhibit abnormal mitochondria, increased reactive oxygen species (ROS), and oxidative stress.
- Cancer therapies can disrupt mitochondrial homeostasis, impacting cell death pathways.
Purpose of the Study:
- To review evidence linking mitochondrial oxidative stress to cancer.
- To explore the role of the mitochondrial peroxiredoxin III (Prx III) antioxidant system in cancer.
- To discuss Prx III as a potential therapeutic target for cancer treatment.
Main Methods:
- Literature review of studies on mitochondria, oxidative stress, and cancer.
- Analysis of the function of the peroxiredoxin (Prx) system, particularly Prx III, in cancer cells.
- Examination of the interplay between mitochondrial oxidative stress and cancer therapy outcomes.
Main Results:
- Mitochondrial oxidative stress is implicated in various aspects of cancer.
- Cancer cells often possess elevated levels of mitochondrial Prx III, a key antioxidant.
- Mitochondrial oxidative stress influences the efficacy of cancer therapies.
Conclusions:
- Mitochondrial oxidative stress is a significant factor in cancer.
- The mitochondrial Prx III antioxidant system presents a viable target for novel cancer therapies.
- Further research into targeting mitochondrial pathways could lead to improved cancer treatments.
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