2025年3月18日 · 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. Here we review molecules involved in TLR …

2021年1月25日 · In summary, these results demonstrate that silencing of TLR4 attenuates LPS-induced liver injury through inhibition of inflammation and apoptosis via TLR4/MyD88/NF-κB signaling pathway. TLR4...

2013年12月6日 · The common structural pattern of LPS in diverse bacterial species is recognized by a cascade of LPS receptors and accessory proteins, LPS binding protein (LBP), CD14 and the Toll-like receptor4 ...

TLR4 agonists facilitate T cell clonal expansion and activation by augmenting cytokine production and antigen presentation. The augmentation of Th1 polarity and activation facilitates B cell immunoglobulin production.

In this study, we investigated the effects of LPA on TLR4 expression, nuclear translocation of NF-κB p65 subunit, and changes in the cytokine tumor necrosis factor α (TNF-α) in human THP-1 cells. LPA upregulated expression of the TLR4 mRNA and protein in THP-1 cells in a dose- and time-dependent manner, induced NF-κB p65 activation ...

Toll 样受体 4 （Toll-like receptor 4，TLR4）是由 Poltorak 等于 1998 年发现的 一种 I 型跨膜蛋白，其由 TLR4 基因编码，并表达于包括单核细胞，巨嗜细胞在内 的多种组织细胞中，可以识别革兰氏阴性细菌的 脂多糖 （lipopolysaccharide，LPS）， 并通过 NF-κB 或 JNK/SAPK 途径 ...

Here we describe the LPS-induced TLR4 and caspase-4/11 mediated signaling pathways and their cross-talk and scrutinize specific structural features of the lipid A motif of diverse LPS variants that have been reported to activate caspase-4/11 or to induce caspase-4/11 mediated activation of NLRP3 inflammasome (either upon transfection of LPS in v...

Lysophosphatidic acid (LPA) is an active compound of oxidized low-density lipoprotein that serves as an endogenous TLR4 ligand. Ligand activation of TLR4 activates nuclear factor-kappaB (NF-κB) and the transcription of NF-κB-regulated inflammatory ...

2016年9月13日 · In this study, we investigated the effects of LPA on TLR4 expression, nuclear translocation of NF-κB p65 subunit, and changes in the cytokine tumor necrosis factor α (TNF-α) in human THP-1 cells. LPA upregulated expression of the TLR4 mRNA and protein in THP-1 cells in a dose- and time-dependent manner, induced NF-κB p65 activation ...