Upregulation of Bag-1 by ex vivo gene transfer protects rat livers from ischemia/reperfusion injury.

Abstract:

:Bag-1 exerts powerful antiapoptotic effects by binding and stabilizing Bcl-2 and interacting with the tumor necrosis factor receptor type I-induced death signal. We examined the effects of overexpression of Bag-1 by ex vivo adenoviral gene transfer on cold (4 degrees C for 24 hr) ischemia/reperfusion (I/R) injury of rat livers. Treatment with adenoviral Bag-1 (Ad-Bag-1) significantly improved portal venous blood flow, increased bile production, and improved hepatic function in the ex vivo model of cold ischemia followed by isolated perfusion. Moreover, the survival of orthotopic liver grafts subjected to cold ischemia increased from 50% in Ad-betaGal-treated controls to 100% after Ad-Bag-1 therapy. This effect correlated with preserved hepatic architecture, improved liver function, and depressed infiltration by neutrophils. Furthermore, the activation of infiltrating T cells, as measured by CD25, IL-2, and IFN-gamma mRNA expression was markedly reduced in the Ad-Bag-1 group. Hence, gene therapy-induced Bag-1 overexpression prevented cold I/R injury in rat livers. These findings provide the rationale for refined novel treatment of donor livers and may ultimately improve the overall success of liver transplantation.

journal_name

Hum Gene Ther

journal_title

Human gene therapy

authors

Sawitzki B,Amersi F,Ritter T,Fisser M,Shen XD,Ke B,Busuttil R,Volk HD,Kupiec-Weglinski JW

doi

10.1089/10430340260185120

keywords:

subject

Has Abstract

pub_date

2002-08-10 00:00:00

pages

1495-504

issue

12

eissn

1043-0342

issn

1557-7422

journal_volume

13

pub_type

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