Title:Cysteine Metabolism in Tumor Redox Homeostasis
Volume: 30
Issue: 16
Author(s): Yanmei Fan, Xiao Tan, Hongcheng Zhao, Xiancong Tu, Xiaowen Liu*Yueqing Wang*
Affiliation:
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University,
Yichang, 443003, P.R. China
- Medical College, China Three Gorges University, Yichang, 443003, P.R.
China
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University,
Yichang, 443003, P.R. China
- Medical College, China Three Gorges University, Yichang, 443003, P.R.
China
Keywords:
Cysteine, metabolism, tumor, redox homeostasis, tumor treatment, glutathione.
Abstract: Cysteine (Cys) is a semi-essential nutrient amino acid that plays an important
role in cells through endogenous production and various transport systems. Intracellular
Cys can be used as a precursor of protein synthesis to maintain cell homeostasis and to
generate sulfur-containing substances, including glutathione (GSH), hydrogen sulfide
(H2S), and taurine. There have been quite a few reports that Cys is related to tumor occurrence
and development, and its level is closely related to tumor proliferation, invasion,
and metastasis. Moreover, it helps in maintaining the tumor redox balance and increasing
drug resistance. This review aims to summarize the production and metabolism of Cys
and its role in tumors, with special emphasis on the potential therapeutic value of Cys in
tumors to improve the quality of life of cancer patients.