Nuclear factor-κB transcription factor decoy treatment inhibits graft coronary artery disease after cardiac transplantation in rodents

被引:26
作者
Feeley, BT [1 ]
Miniati, DN [1 ]
Park, AK [1 ]
Hoyt, EG [1 ]
Robbins, RC [1 ]
机构
[1] Stanford Univ, Sch Med, Dept Cardiothorac Surg, Stanford, CA 94305 USA
关键词
D O I
10.1097/00007890-200012150-00005
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Background Nuclear factor-kappaB (NF-kappaB) is a transcription factor that upregulates adhesion molecules ICAM-1, VCAM-1, and ELAM-1. We hypothesized the use of ex vivo pressure-mediated delivery of transcription factor decoys (TFD) to NF-kappaB binding sites would decrease expression of adhesion molecules, and decrease reperfusion injury, acute rejection, and graft coronary artery disease (GCAD) in rat cardiac allografts. Methods. Heterotopic heart transplants were performed on donor hearts treated with saline, 10 mg/kg LPS, 160 mu mol/L NF-kappaB TFD, or 160 mu mol/L scrambled sequence (NF-SC) TFD for 45 min at 78 psi (6 atm), Transfection efficiency was determined with FITC-labeled TFD, Reverse transcription-PCR and immunohistochemistry was used to analyze adhesion molecule mRNA and protein expression, respectively. Apoptosis was measured with DNA fragmentation analysis. Reperfusion injury was assessed with cardiac edema, neutrophil infiltration, and histology. Acute rejection was determined by daily palpation. Allografts were assessed at POD 90 for the development of GCAD by computer-assisted image analysis to determine intimal:medial ratio and myointimal proliferation. Results. Hyperbaric pressure was an effective method of NF-kappaD TFD delivery (P < 0.001 vs. controls). NF-<kappa>B TFD treatment led to decreased mRNA and protein expression of adhesion molecules. Treatment with NF-kappaB TFD led to a significant decrease in all reperfusion injury parameters compared to saline and NF-SC controls (P < 0.01 vs. controls). Higher levels of apoptosis were seen in allografts treated with NF-<kappa>B TFD compared to control allografts, NF-kappaB TFD treatment prolonged allograft survival over saline and NF-SC controls (P < 0.05). Myointimal proliferation and intimal:medial ratios in NF-<kappa>B TFD-treated allografts were significantly decreased compared to saline and NF-SC treatment (P < 0.00001). Conclusions. Ex vivo pressure-mediated delivery of NF-<kappa>B TFD is an effective method to block adhesion molcule expression and reperfusion injury in the immediate posttransplant period. Further; NF-kappaB TED treatment prolongs allograft survival and decreases GCAD.
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收藏
页码:1560 / 1568
页数:9
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