TY - JOUR
T1 - Immunotargeting of catalase to the pulmonary endothelium alleviates oxidative stress and reduces acute lung transplantation injury
AU - Kozower, Benjamin D.
AU - Christofidou-Solomidou, Melpo
AU - Sweitzer, Thomas D.
AU - Muro, Silvia
AU - Buerk, Donald G.
AU - Solomides, Charalambos C.
AU - Albelda, Steven M.
AU - Patterson, G. Alexander
AU - Muzykantov, Vladimir R.
N1 - Funding Information:
Acknowledgments The authors thank M. Nakada (Centocor, Malvern, Pennsylvania) for a generous gift of anti-PECAM mAb 62, R. Wiewrodt and V. Shuvaev (University of Pennsylvania) for their advice and valuable help in characterization of the conjugates size by Dynamic Light Scattering, A.P. Thomas for help in conjugate preparation and experiments with cell cultures, and D.W. Harshaw for help in experiments with perfused rat lungs. The authors also acknowledge the help of T. Tagawa and S. Kanaan (Washington University) for their support with the transplantation experiments and R. Schuessler and B.W. McKane for their statistical and laboratory assistance. S.M. is supported by a fellowship from the Fundacion Ramon Areces (Spain). The work was supported by US National Institutes of Health SCOR in Acute Lung Injury (NHLBI HL 60290, Project 4 to V.R.M. and S.M.A.), ALA Research Grant (no. RG-087-N to M.C.S.) and National Institutes of Health grant 1 R01 HL41281 (to G.A.P.).
PY - 2003/4/1
Y1 - 2003/4/1
N2 - Vascular immunotargeting may facilitate the rapid and specific delivery of therapeutic agents to endothelial cells. We investigated whether targeting of an antioxidant enzyme, catalase, to the pulmonary endothelium alleviates oxidative stress in an in vivo model of lung transplantation. Intravenously injected enzymes, conjugated with an antibody to platelet-endothelial cell adhesion molecule-1, accumulate in the pulmonary vasculature and retain their activity during prolonged cold storage and transplantation. Immunotargeting of catalase to donor rats augments the antioxidant capacity of the pulmonary endothelium, reduces oxidative stress, ameliorates ischemia-reperfusion injury, prolongs the acceptable cold ischemia period of lung grafts, and improves the function of transplanted lung grafts. These findings validate the therapeutic potential of vascular immunotargeting as a drug delivery strategy to reduce endothelial injury. Potential applications of this strategy include improving the outcome of clinical lung transplantation and treating a wide variety of endothelial disorders.
AB - Vascular immunotargeting may facilitate the rapid and specific delivery of therapeutic agents to endothelial cells. We investigated whether targeting of an antioxidant enzyme, catalase, to the pulmonary endothelium alleviates oxidative stress in an in vivo model of lung transplantation. Intravenously injected enzymes, conjugated with an antibody to platelet-endothelial cell adhesion molecule-1, accumulate in the pulmonary vasculature and retain their activity during prolonged cold storage and transplantation. Immunotargeting of catalase to donor rats augments the antioxidant capacity of the pulmonary endothelium, reduces oxidative stress, ameliorates ischemia-reperfusion injury, prolongs the acceptable cold ischemia period of lung grafts, and improves the function of transplanted lung grafts. These findings validate the therapeutic potential of vascular immunotargeting as a drug delivery strategy to reduce endothelial injury. Potential applications of this strategy include improving the outcome of clinical lung transplantation and treating a wide variety of endothelial disorders.
UR - http://www.scopus.com/inward/record.url?scp=12244298160&partnerID=8YFLogxK
U2 - 10.1038/nbt806
DO - 10.1038/nbt806
M3 - Article
C2 - 12652312
AN - SCOPUS:12244298160
SN - 1087-0156
VL - 21
SP - 392
EP - 398
JO - Nature Biotechnology
JF - Nature Biotechnology
IS - 4
ER -