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George M. O'Brien Kidney and Urological Disease Center, Renal Division, and Departments of Medicine and Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri 63110
The number of kidney transplants
performed per year is limited by the availability of donor organs. One
novel solution to this shortage envisions "growing" new kidneys in
situ via xenotransplantation of renal anlagen. We have shown that
developing metanephroi transplanted into the omentum of animal hosts
undergo differentiation and growth, become vascularized by blood
vessels of host origin, and exhibit excretory function. Metanephroi can
be stored for up to 3 days in vitro before transplantation with no
impairment in growth or function postimplantation. Metanephroi can be
transplanted across both concordant (rat
mouse) and
discordant/highly disparate (pig
rodent) xenogeneic barriers. This
review summarizes experimental data relating to the transplantation of
developing kidneys.
acute vascular rejection; cellular transplant; costimulatory blockade; hyperacute rejection; metanephros
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