Significance of Malic Enzyme 1 in Cancer: A Review

Area of Science:

• Oncology
• Metabolic pathways
• Cancer biology

Background:

• Malic enzyme 1 (ME1) is implicated in malignant phenotypes across cancers.
• ME1 expression is upregulated in hypoxic conditions, often mediated by hypoxia-inducible factor (HIF1) α.
• ME1 overexpression at the invasive front correlates with cancer metastasis.

Purpose of the Study:

• To review the mechanisms by which ME1 contributes to cancer progression.
• To highlight ME1's role in epithelial-mesenchymal transition (EMT), stemness, and metabolic reprogramming.
• To discuss ME1's potential as a novel therapeutic target.

Main Methods:

• Literature review of recent research on ME1 in cancer.
• Analysis of ME1's role in metabolic pathways, including glutaminolysis and glycolysis.
• Examination of ME1's involvement in redox balance and NADPH production.

Main Results:

• ME1 promotes cancer stemness and malignant phenotypes by reprogramming energy metabolism.
• ME1 enhances cancer cell invasion and metastasis, particularly under hypoxic conditions.
• ME1 contributes to redox balance and cell survival by generating NADPH and neutralizing reactive oxygen species (ROS).

Conclusions:

• ME1 is a critical driver of cancer progression, influencing metabolism, stemness, invasion, and survival.
• ME1's multifaceted role in cancer makes it a significant target for future therapeutic interventions.
• Targeting ME1 may offer a novel strategy to combat various types of cancer.