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2015 ; 10
(7
): e0131677
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Improved Structure and Function in Autosomal Recessive Polycystic Rat Kidneys
with Renal Tubular Cell Therapy
#MMPMID26136112
Kelly KJ
; Zhang J
; Han L
; Kamocka M
; Miller C
; Gattone VH 2nd
; Dominguez JH
PLoS One
2015[]; 10
(7
): e0131677
PMID26136112
show ga
Autosomal recessive polycystic kidney disease is a truly catastrophic monogenetic
disease, causing death and end stage renal disease in neonates and children.
Using PCK female rats, an orthologous model of autosomal recessive polycystic
kidney disease harboring mutant Pkhd1, we tested the hypothesis that intravenous
renal cell transplantation with normal Sprague Dawley male kidney cells would
improve the polycystic kidney disease phenotype. Cytotherapy with renal cells
expressing wild type Pkhd1 and tubulogenic serum amyloid A1 had powerful and
sustained beneficial effects on renal function and structure in the polycystic
kidney disease model. Donor cell engraftment and both mutant and wild type Pkhd1
were found in treated but not control PCK kidneys 15 weeks after the final cell
infusion. To examine the mechanisms of global protection with a small number of
transplanted cells, we tested the hypothesis that exosomes derived from normal
Sprague Dawley cells can limit the cystic phenotype of PCK recipient cells. We
found that renal exosomes originating from normal Sprague Dawley cells carried
and transferred wild type Pkhd1 mRNA to PCK cells in vivo and in vitro and
restricted cyst formation by cultured PCK cells. The results indicate that
transplantation with renal cells containing wild type Pkhd1 improves renal
structure and function in autosomal recessive polycystic kidney disease and may
provide an intra-renal supply of normal Pkhd1 mRNA.