GST

GST Full Name

Glutathione S Transferase

GST Introduction

Glutathione S-Transferases (GSTs) are a diverse family of phase II detoxification enzymes that play a central role in cellular defense against a broad range of endogenous and exogenous toxins. By catalyzing the conjugation of glutathione to electrophilic compounds, GSTs facilitate the neutralization and elimination of harmful substances, including reactive oxygen species and environmental carcinogens. Different isoforms, such as GSTT1, GSTA4, and MGST3, exhibit tissue-specific expression patterns and contribute uniquely to both normal physiological processes and disease pathogenesis. Their genetic polymorphisms or altered expression levels can profoundly influence an individual's susceptibility to various health conditions, highlighting the importance of GSTs as molecular targets in biomedical research and therapeutic strategies.

In oncology, the GSTT1 null genotype has emerged as a significant genetic factor influencing susceptibility to head and neck carcinomas. A comprehensive systematic review and meta-analysis revealed that individuals lacking functional GSTT1 exhibit a 28% higher risk of developing these cancers, with certain subtypes such as nasopharyngeal carcinoma showing even greater vulnerability. The absence of GSTT1 compromises the detoxification of environmental carcinogens, thereby increasing DNA damage and tumor initiation. Understanding the implications of GST polymorphisms provides valuable insight for personalized risk assessment, early diagnosis, and the development of chemopreventive interventions for high-risk populations.

Beyond cancer, GSTs are critically involved in the regulation of oxidative stress and protein homeostasis in metabolic and neurodegenerative diseases. For instance, downregulation of GSTA4 in adipose tissue promotes protein carbonylation, mitochondrial dysfunction, and metabolic imbalance, contributing to obesity-related insulin resistance and chronic inflammation. Similarly, MGST3 modulates the extracellular transport of α-synuclein under oxidative stress, influencing the progression of neurodegenerative conditions like Parkinson's disease. Furthermore, GSTs also play adaptive roles in environmental stress responses, as demonstrated in insects such as Tetranychus urticae, where heat-induced GST expression enhances oxidative stress resilience. Collectively, these studies underscore GSTs as versatile molecular regulators that bridge detoxification, cellular stress responses, and disease susceptibility, offering promising avenues for therapeutic and environmental applications.

Alternate Names for GST

Glutathione S Transferase; Glutathione S transferase Mu 1; Glutathione S-transferase class-mu 26 kDa isozyme; GST 26; GST; GST class mu 1; GST1; GSTM1 1; GSTM1a 1a; GSTM1b 1b; GTH4; GTM1

• 1.Sadafi S, et al.; Glutathione S-transferase theta 1 (GSTT1) deletion polymorphism and susceptibility to head and neck carcinoma: a systematic review with five analyses. BMC Cancer. 2024, 24(1):885.
  2.Yan J, et al.; Alpha-Synuclein Interaction with UBL3 Is Upregulated by Microsomal Glutathione S-Transferase 3, Leading to Increased Extracellular Transport of the Alpha-Synuclein under Oxidative Stress. Int J Mol Sci. 2024, 25(13):7353.