Toll-like receptor 4 pathway messenger RNAs (TLR4 pathway mRNAs) (TLR4 pathway mRNAs)

Toll-like receptor 4 (TLR4) pathway mRNAs encompass the set of messenger RNA molecules that encode the various protein components of the TLR4 signaling cascade, including the receptor itself, co-receptors like MD-2, and downstream adaptors such as MyD88 and TRIF [NCBI, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3918581/]. This pathway is a cornerstone of the innate immune system, primarily recognized for its role in detecting lipopolysaccharides (LPS) from Gram-negative bacteria and initiating a robust inflammatory response [PubMed, https://pubmed.ncbi.nlm.nih.gov/30107173/]. Upon activation, these mRNAs are translated into proteins that facilitate the activation of transcription factors like NF-kappaB, leading to the production of pro-inflammatory cytokines [Frontiers in Immunology, https://www.frontiersin.org/articles/10.3389/fimmu.2020.01214/full]. Overactivation or chronic signaling of the TLR4 pathway is linked to diverse pathologies, including septic shock, rheumatoid arthritis, and various malignancies where it promotes a pro-tumorigenic microenvironment [Nature Reviews Immunology, https://www.nature.com/articles/s41577-019-0151-x]. Targeting these mRNAs using RNA-based therapeutics, such as small interfering RNAs (siRNAs) or antisense oligonucleotides (ASOs), represents an emerging strategy to downregulate the pathway's output with high specificity [Nature Reviews Drug Discovery, https://www.nature.com/articles/s41573-021-00354-z]. Such approaches aim to prevent the translation of key signaling proteins, thereby mitigating excessive inflammation and restoring immune homeostasis [PubMed, https://pubmed.ncbi.nlm.nih.gov/31434099/]. Unlike small molecule inhibitors that target protein function, mRNA-targeted therapies can potentially address 'undruggable' components of the signaling cascade [Molecular Therapy, https://www.cell.com/molecular-therapy-family/molecular-therapy/fulltext/S1525-0016(17)30155-4].

Other names

TLR4 signaling transcriptsTLR4-related mRNAsToll-like receptor 4 pathway transcriptsTLR4 pathway mRNA

Degradation of target mRNA transcripts via the RNA-induced silencing complex (RISC) or RNase H-mediated cleavage, preventing the translation of proteins involved in the TLR4 signaling cascade [Nature Reviews Drug Discovery, https://www.nature.com/articles/s41573-021-00354-z; Molecular Therapy, https://www.cell.com/molecular-therapy-family/molecular-therapy/fulltext/S1525-0016(17)30155-4].