Thioredoxin system messenger RNA (Trx system mRNA)

Thioredoxin pathway mRNA refers to the messenger RNA transcripts encoding the essential proteins of the thioredoxin system, primarily thioredoxin (TXN) and thioredoxin reductase (TXNRD) [UniProt, 2024]. This system serves as a critical antioxidant defense mechanism, maintaining cellular redox homeostasis by facilitating the reduction of protein disulfides and scavenging reactive oxygen species [NCBI, 2023]. Beyond antioxidant activity, the pathway provides reducing equivalents for DNA synthesis via ribonucleotide reductase and regulates various redox-sensitive signaling pathways involved in cell growth and apoptosis [PubMed, 2019]. In many cancers, these mRNAs are significantly upregulated to counteract high levels of oxidative stress and evade programmed cell death, making them attractive targets for anti-cancer therapies [Free Radical Biology and Medicine, 2018]. Therapeutic interventions targeting these mRNAs, such as antisense oligonucleotides (ASOs) or small interfering RNAs (siRNAs), aim to knockdown protein expression and sensitize malignant cells to oxidative damage and chemotherapy [Journal of Biological Chemistry, 2003]. While protein-level inhibitors like auranofin are well-known, mRNA-targeted approaches offer the potential for high specificity against particular isoforms like TXNRD1. However, the essential nature of this pathway in normal physiology, particularly in cardiac and hepatic tissues, poses significant challenges for systemic delivery and safety [PubMed, 2021].

Other names

TXN mRNATXNRD1 mRNAThioredoxin-1 mRNAThioredoxin reductase 1 mRNATXNIP mRNAThioredoxin pathway transcripts

RNA interference (RNAi) or antisense-mediated degradation of mRNA transcripts to prevent the translation of thioredoxin system proteins, thereby increasing cellular oxidative stress and inducing apoptosis [PubMed, 2018].