PKH^high cells within clonal human nephrospheres provide a purified adult renal stem cell population

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• 作者：Silvia Bombelli ; Maria Anna Zipeto ; Barbara Torsello ; Giorgio Bovo ; Vitalba Di Stefano ; Cristina Bugarin ; Paola Zordan ; Paolo Vigan貌 ; Giorgio Cattoretti ; Guido Strada ; Cristina Bianchi ; Roberto A Perego
• 刊名：Stem Cell Research
• 出版年：November, 2013
• 年：2013
• 卷：11
• 期：3
• 页码：1163-1177
• 全文大小：2593 K

文摘

The existence and identification of adult renal stem cells is a controversial issue. In this study, renal stem cells were identified from cultures of clonal human nephrospheres. The cultured nephrospheres exhibited the activation of stem cell pathways and contained cells at different levels of maturation. In each nephrosphere the presence of 1.12-1.25 cells mirroring stem cell properties was calculated. The nephrosphere cells were able to generate three-dimensional tubular structures in 3D cultures and in vivo. In clonal human nephrospheres a PKH^high phenotype was isolated using PKH26 epifluorescence, which can identify quiescent cells within the nephrospheres. The PKH^high cells, capable of self-renewal and of generating a differentiated epithelial, endothelial and podocytic progeny, can also survive in vivo maintaining the undifferentiated status. The PKH^high status, together with a CD133⁺/CD24^{鈭?/sup> phenotype, identified a homogeneous cell population displaying in vitro self-renewal and multipotency capacity. The resident adult renal stem cell population isolated from nephrospheres can be used for the study of mechanisms that regulate self-renewal and differentiation in adult renal tissue as well as in renal pathological conditions.}