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2017 ; 6
(2
): 394-404
Nephropedia Template TP
Wang L
; Xie L
; Tintani F
; Xie H
; Li C
; Cui Z
; Wan M
; Zu X
; Qi L
; Cao X
Stem Cells Transl Med
2017[Feb]; 6
(2
): 394-404
PMID28191756
show ga
Benign prostatic hyperplasia (BPH) is the overgrowth of prostate tissues with
high prevalence in older men. BPH pathogenesis is not completely understood, but
it is believed to be a result of de novo overgrowth of prostatic stroma. In this
study, we show that aberrant activation of transforming growth factor-? (TGF-?)
mobilizes mesenchymal/stromal stem cells (MSCs) in circulating blood, which are
recruited for the prostatic stromal hyperplasia. Elevated levels of active TGF-?
were observed in both a phenylephrine-induced prostatic hyperplasia mouse model
and human BPH tissues. Nestin lineage tracing revealed that 39.6% ± 6.3% of
fibroblasts and 73.3% ± 4.2% smooth muscle cells were derived from nestin(+)
cells in Nestin-Cre, Rosa26-YFP(flox/+) mice. Nestin(+) MSCs were increased in
the prostatic hyperplasia mice. Our parabiosis experiment demonstrate that
nestin(+) MSCs were mobilized and recruited to the prostatic stroma of wild-type
mice and gave rise to the fibroblasts. Moreover, injection of a TGF-?
neutralizing antibody (1D11) inhibits mobilization of MSCs, their recruitment to
the prostatic stroma and hyperplasia. Importantly, knockout of T?RII in nestin(+)
cell lineage ameliorated stromal hyperplasia. Thus, elevated levels of
TGF-?-induced mobilization and recruitment of MSCs to the reactive stroma
resulting in overgrowth of prostate tissues in BPH and, thus, inhibition of TGF-?
activity could be a potential therapy for BPH. Stem Cells Translational Medicine
2017;6:394-404.