Abstract
In the future, stem cell-based technologies may be harnessed to replace conventional dialysis and transplantation in patients with diabetic nephropathy. Recently, there has been considerable effort to improve methods for the differentiation of human pluripotent stem cells (hPSCs) into kidney cells in culture. Here, we present a protocol for obtaining more advanced kidney structures than have currently been possible in vitro, including vascularized glomeruli and tubular elements. HPSCs are first differentiated in 2D culture to a kidney progenitor stage. These cells are then dissociated and injected subcutaneously into immunocompromised mice. Twelve weeks later, the cells have developed into mature kidney structures and are excised for further characterization. This method constitutes a significant improvement on protocols that involve either exclusively a 2D culture or placing the cells in 3D organoid culture at the air-liquid interface in vitro.
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