Title : Palmitic acid is a toll-like receptor 4 ligand that induces human dendritic cell secretion of IL-1β.

Pub. Date : 2017

PMID : 28463985






20 Functional Relationships(s)
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1 Palmitic acid is a toll-like receptor 4 ligand that induces human dendritic cell secretion of IL-1beta. Palmitic Acid toll like receptor 4 Homo sapiens
2 Palmitic acid (PA) and other saturated fatty acids are known to stimulate pro-inflammatory responses in human immune cells via Toll-like receptor 4 (TLR4). Palmitic Acid toll like receptor 4 Homo sapiens
3 Palmitic acid (PA) and other saturated fatty acids are known to stimulate pro-inflammatory responses in human immune cells via Toll-like receptor 4 (TLR4). Palmitic Acid toll like receptor 4 Homo sapiens
4 Palmitic acid (PA) and other saturated fatty acids are known to stimulate pro-inflammatory responses in human immune cells via Toll-like receptor 4 (TLR4). Palmitic Acid toll like receptor 4 Homo sapiens
5 Palmitic acid (PA) and other saturated fatty acids are known to stimulate pro-inflammatory responses in human immune cells via Toll-like receptor 4 (TLR4). Palmitic Acid toll like receptor 4 Homo sapiens
6 Here, we demonstrate that PA functions as a ligand for TLR4 on human monocyte derived dendritic cells (MoDCs). Palmitic Acid toll like receptor 4 Homo sapiens
7 Hydrophobicity protein modeling indicated PA can associate with the hydrophobic binding pocket of TLR4 adaptor protein MD-2. Palmitic Acid toll like receptor 4 Homo sapiens
8 Isothermal titration calorimetry quantified heat absorption that occurred during PA titration into TLR4/MD2, indicating that PA binds to TLR4/MD2. Palmitic Acid toll like receptor 4 Homo sapiens
9 Isothermal titration calorimetry quantified heat absorption that occurred during PA titration into TLR4/MD2, indicating that PA binds to TLR4/MD2. Palmitic Acid toll like receptor 4 Homo sapiens
10 Isothermal titration calorimetry quantified heat absorption that occurred during PA titration into TLR4/MD2, indicating that PA binds to TLR4/MD2. Palmitic Acid toll like receptor 4 Homo sapiens
11 Isothermal titration calorimetry quantified heat absorption that occurred during PA titration into TLR4/MD2, indicating that PA binds to TLR4/MD2. Palmitic Acid toll like receptor 4 Homo sapiens
12 Treatment of human MoDCs with PA resulted in endocytosis of TLR4, further supporting the function of PA as a TLR4 agonist. Palmitic Acid toll like receptor 4 Homo sapiens
13 Treatment of human MoDCs with PA resulted in endocytosis of TLR4, further supporting the function of PA as a TLR4 agonist. Palmitic Acid toll like receptor 4 Homo sapiens
14 Treatment of human MoDCs with PA resulted in endocytosis of TLR4, further supporting the function of PA as a TLR4 agonist. Palmitic Acid toll like receptor 4 Homo sapiens
15 Treatment of human MoDCs with PA resulted in endocytosis of TLR4, further supporting the function of PA as a TLR4 agonist. Palmitic Acid toll like receptor 4 Homo sapiens
16 Further experiments showed that PA induced TLR4 dependent secretion of the pro-inflammatory cytokine IL-1beta. Palmitic Acid toll like receptor 4 Homo sapiens
17 Lastly, our experimental data show that PA stimulation of NF-kappaB canonical pathway activation is regulated by TLR4 signaling and that reactive oxygen species may be important in upregulating this pro-inflammatory response. Palmitic Acid toll like receptor 4 Homo sapiens
18 Our experiments demonstrate for the first time that PA activation of TLR4 occurs in response to direct molecular interactions between PA and MD-2. Palmitic Acid toll like receptor 4 Homo sapiens
19 Our experiments demonstrate for the first time that PA activation of TLR4 occurs in response to direct molecular interactions between PA and MD-2. Palmitic Acid toll like receptor 4 Homo sapiens
20 In summary, our findings suggest a likely molecular mechanism for PA induction of pro-inflammatory immune responses in human dendritic cells expressing TLR4. Palmitic Acid toll like receptor 4 Homo sapiens