Mar 18, 2025 · The LPS-TLR4 immune response is a critical mechanism in the body's defense against Gram-negative bacterial infections, yet its dysregulation can lead to severe inflammatory diseases. Lipopolysaccharide (LPS), a pivotal pathogen-associated molecular pattern (PAMP) on the surface of gram-negative bacteria, is recognized by Toll-like receptor 4 (TLR4), initiating a complex cascade of immune ...

The stimulation of Toll-like receptor 4 (TLR4) by lipopolysaccharide (LPS) induces the release of critical proinflammatory cytokines that are necessary to activate potent immune responses. LPS/TLR4 signaling has been intensively studied in the past few years.

In this review, we focus on the mechanisms of the internalization and intracellular trafficking of TLR4 and CD14, and also of LPS, in immune cells and discuss how dysregulation of the endo-lysosomal compartment contributes to the development of diverse human diseases.

Dec 6, 2013 · Overview of LPS recognition by TLR4–MD-2. LPS binding induces dimerization of the TLR4–MD-2 complex, which is proposed to enable dimerization of the intracellular TIR domains and...

Mar 1, 2009 · Toll-like receptor (TLR) 4 and myeloid differentiation factor 2 (MD-2) form a heterodimer that recognizes a common ‘pattern’ in structurally diverse LPS molecules. To understand the...

Toll-like receptor 4 (TLR4) is a pattern recognition receptor that functions as lipopolysaccharide (LPS) sensor and whose activation results in the production of several pro-inflammatory, antiviral, and anti-bacterial cytokines. TLR4 is expressed in several cells of healthy liver.

Apr 16, 1999 · TLR4 is a member of the recently identified Toll-like receptor family of proteins and has been putatively identified as Lps, the gene necessary for potent responses to lipopolysaccharide in mammals.

Jan 1, 2005 · One such receptor–ligand complex is formed between the mammalian Toll-like receptor 4 (TLR4)–MD2–CD14 complex and bacterial lipopolysaccharide (LPS). Recent research indicates that there is...

TLR4 has now been established as the receptor for LPS; however, in addition to this, TLR4 also recognizes lipoteichoic acid (LTA), fibronectin, the fusion protein of respiratory syncytial virus (RSV) and taxol, a plant diterpene structurally unrelated to LPS but exhibiting LPS-mimetic effects on murine cells. 8, 17, 22 – 24 The evidence that ...

May 1, 2008 · The stimulation of Toll-like receptor 4 (TLR4) by lipopolysaccharide (LPS) induces the release of critical proinflammatory cytokines that are necessary to activate potent immune responses. LPS/TLR4 signaling has been intensively studied in the past few years.