When Ninjurin-1 is turned off in human blood vessel cells exposed to a harmful form of cholesterol, cell death decreases by 72%, and the cells regain their ability to multiply and move closer to...
Mechanism
Synthesis from 1 study
Bad fats trigger a protein called Ninjurin-1 to turn on a persistent inflammation signal inside blood vessel cells. This signal stops the cells from healing and makes them die. Turning off Ninjurin-1 shuts down this signal, letting the cells recover and work normally again.
Most probable mechanism
When bad fats build up in blood vessels, a protein called Ninjurin-1 turns on a signaling chain that keeps inflammation stuck in high gear. This chain causes cells to stop growing and moving properly, and start dying. Blocking Ninjurin-1 breaks this chain, letting the cells recover and function normally again.
Ninjurin-1 protein expression increases in endothelial cells exposed to oxidized low-density lipoprotein.
Ninjurin-1 triggers phosphorylation and activation of the NF-κB p65 subunit, initiating pro-inflammatory signaling.
Activated NF-κB translocates to the nucleus and increases transcription of the chemokine CXCL-8.
CXCL-8 binds to its receptors on endothelial cells, reinforcing NF-κB activation through a positive feedback loop.
Sustained NF-κB/CXCL-8 signaling suppresses endothelial cell proliferation and migration while promoting apoptosis.
Silencing Ninjurin-1 interrupts this feedback loop, restoring normal cell function and reducing cell death.
Evidence from Studies
Supporting (1)
Community contributions welcome
Ninjurin-1 drives atherosclerosis progression via NF-κB/CXCL-8 activation in endothelial cells
Contradicting (0)
Community contributions welcome
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.