Three-dimensional architecture of podocytes revealed by block-face scanning electron microscopy

Scientific Reports
Koichiro IchimuraTatsuo Sakai

Abstract

Block-face imaging is a scanning electron microscopic technique which enables easier acquisition of serial ultrastructural images directly from the surface of resin-embedded biological samples with a similar quality to transmission electron micrographs. In the present study, we analyzed the three-dimensional architecture of podocytes using serial block-face imaging. It was previously believed that podocytes are divided into three kinds of subcellular compartment: cell body, primary process, and foot process, which are simply aligned in this order. When the reconstructed podocytes were viewed from their basal side, the foot processes were branched from a ridge-like prominence, which was formed on the basal surface of the primary process and was similar to the usual foot processes in structure. Moreover, from the cell body, the foot processes were also emerged via the ridge-like prominence, as found in the primary process. The ridge-like prominence anchored the cell body and primary process to the glomerular basement membrane, and connected the foot processes to the cell body and primary process. In conclusion, serial block-face imaging is a powerful tool for clear understanding the three-dimensional architecture of podocytes thr...Continue Reading

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Citations

Dec 3, 2015·Anatomical Science International·Koichiro Ichimura, Tatsuo Sakai
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Methods Mentioned

BETA
scanning electron microscopy
transmission electron microscopy

Software Mentioned

AMIRA
Fiji

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