Ferroptosis Inhibition Protects Vascular Endothelial Cells and Maintains Integrity of the Blood-spinal Cord Barrier After Spinal Cord Injury
Overview
Authors
Affiliations
Maintaining the integrity of the blood-spinal cord barrier is critical for the recovery of spinal cord injury. Ferroptosis contributes to the pathogenesis of spinal cord injury. We hypothesized that ferroptosis is involved in disruption of the blood-spinal cord barrier. In this study, we administered the ferroptosis inhibitor liproxstatin-1 intraperitoneally after contusive spinal cord injury in rats. Liproxstatin-1 improved locomotor recovery and somatosensory evoked potential electrophysiological performance after spinal cord injury. Liproxstatin-1 maintained blood-spinal cord barrier integrity by upregulation of the expression of tight junction protein. Liproxstatin-1 inhibited ferroptosis of endothelial cell after spinal cord injury, as shown by the immunofluorescence of an endothelial cell marker (rat endothelium cell antigen-1, RECA-1) and ferroptosis markers Acyl-CoA synthetase long-chain family member 4 and 15-lipoxygenase. Liproxstatin-1 reduced brain endothelial cell ferroptosis in vitro by upregulating glutathione peroxidase 4 and downregulating Acyl-CoA synthetase long-chain family member 4 and 15-lipoxygenase. Furthermore, inflammatory cell recruitment and astrogliosis were mitigated after liproxstatin-1 treatment. In summary, liproxstatin-1 improved spinal cord injury recovery by inhibiting ferroptosis in endothelial cells and maintaining blood-spinal cord barrier integrity.
Iron homeostasis and ferroptosis in human diseases: mechanisms and therapeutic prospects.
Ru Q, Li Y, Chen L, Wu Y, Min J, Wang F Signal Transduct Target Ther. 2024; 9(1):271.
PMID: 39396974 PMC: 11486532. DOI: 10.1038/s41392-024-01969-z.
Li X, Jiao K, Liu C, Li X, Wang S, Tao Y Spinal Cord. 2024; 62(11):609-618.
PMID: 39363043 PMC: 11549042. DOI: 10.1038/s41393-024-01038-w.
Yang J, Wu J, Xie X, Xia P, Lu J, Liu J Neural Regen Res. 2024; 20(7):2015-2028.
PMID: 39254564 PMC: 11691472. DOI: 10.4103/NRR.NRR-D-23-01540.
Sun Y, Zhang J, Gu Y, Liu T, Chen L Pharmaceutics. 2024; 16(8).
PMID: 39204402 PMC: 11359041. DOI: 10.3390/pharmaceutics16081057.
Magnetically attracting hydrogel reshapes iron metabolism for tissue repair.
Xu Y, Cai F, Zhou Y, Tang J, Mao J, Wang W Sci Adv. 2024; 10(33):eado7249.
PMID: 39151007 PMC: 11328908. DOI: 10.1126/sciadv.ado7249.