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Target enzymes in serine-glycine-one-carbon metabolic pathway for cancer therapy
Wei Sun1, Erhu Zhao1,2, Hongjuan Cui1,2
1State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.
Abstract:
Cancer cells selectively take up exogenous serine or synthesize serine via the serine synthesis pathway for conversion into intracellular glycine and one-carbon units for nucleotide biosynthesis. In this process, serine-glycine metabolism and the one-carbon cycle play vital roles, which is named serine-glycine-one-carbon metabolism (SGOC). The SGOC pathway is a metabolic network crucial for tumorigenesis with unexpected complexity and clinical importance. Accumulating evidence has demonstrated that metabolic enzymes in SGOC metabolism play key roles in tumorigenesis, metastasis and resistance to therapies. In this review, we focus on the involvement of serine and glycine in the folate-mediated one-carbon pathway during cancer progression and highlight the pathways through which cancer cells acquire and use one-carbon units. In addition, we discuss the recently elucidated effects of SGOC (folate cycle) metabolic enzymes in the occurrence and development of tumors and their links to drug resistance. Inhibitors of target enzymes in the SGOC pathway display promise as investigational new drug candidates for the treatment of tumors.
Insights
Cancer cells utilize serine and glycine metabolism for nucleotide synthesis, a process vital for tumor growth. Targeting this serine-glycine-one-carbon (SGOC) pathway offers a promising strategy for cancer treatment.
Area of Science:
- Metabolic pathways in oncology
- Cancer cell metabolism
- Biochemical pathways in tumorigenesis
Background:
- Cancer cells exhibit altered metabolism, relying on specific pathways for growth and survival.
- Serine-glycine-one-carbon (SGOC) metabolism is crucial for nucleotide biosynthesis in tumors.
- Enzymes within the SGOC pathway are implicated in cancer progression, metastasis, and therapeutic resistance.
Purpose of the Study:
- To review the role of serine and glycine in the folate-mediated one-carbon pathway during cancer progression.
- To highlight mechanisms of one-carbon unit acquisition and utilization by cancer cells.
- To discuss the impact of SGOC metabolic enzymes on tumor development and drug resistance.
Main Methods:
- Literature review focusing on serine-glycine-one-carbon metabolism in cancer.
- Analysis of the folate cycle and its role in nucleotide biosynthesis.
- Examination of evidence linking SGOC enzymes to tumorigenesis and therapy resistance.
Main Results:
- Cancer cells depend on exogenous serine or de novo serine synthesis for nucleotide production.
- The SGOC pathway provides essential one-carbon units for cancer cell proliferation.
- Metabolic enzymes in the SGOC pathway are critical regulators of tumor growth and metastasis.
- Dysregulation of SGOC metabolism contributes to resistance against cancer therapies.
Conclusions:
- The serine-glycine-one-carbon metabolic network is a key driver of tumorigenesis.
- Targeting enzymes within the SGOC pathway presents a viable therapeutic strategy for cancer.
- Inhibitors of SGOC pathway enzymes show potential as novel anti-cancer drug candidates.
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