Molecular fingerprinting of the podocyte reveals novel gene and protein regulatory networks

Melanie Boerries, Florian Grahammer, Sven Eiselein, Moritz Buck, Charlotte Meyer, Markus Goedel, Wibke Bechtel, Stefan Zschiedrich, Dietmar Pfeifer, Denis Laloë, Christelle Arrondel, Sara Gonçalves, Marcus Krüger, Scott J. Harvey, Hauke Busch, Joern Dengjel, Tobias B. Huber

Research output: Contribution to journalArticlepeer-review

123 Scopus citations

Abstract

A thorough characterization of the transcriptome and proteome of endogenous podocytes has been hampered by low cell yields during isolation. Here we describe a double fluorescent reporter mouse model combined with an optimized bead perfusion protocol and efficient single cell dissociation to yield more than 500,000 podocytes per mouse allowing for global, unbiased downstream applications. Combining mRNA and miRNA transcriptional profiling with quantitative proteomic analyses revealed programs of highly specific gene regulation tightly controlling cytoskeleton, cell differentiation, endosomal transport, and peroxisome function in podocytes. Strikingly, the analyses further predict that these podocyte-specific gene regulatory networks are accompanied by alternative splicing of respective genes. Thus, our 'omics' approach will facilitate the discovery and integration of novel gene, protein, and organelle regulatory networks that deepen our systematic understanding of podocyte biology.

Original languageEnglish
Pages (from-to)1052-1064
Number of pages13
JournalKidney International
Volume83
Issue number6
DOIs
StatePublished - Jun 2013
Externally publishedYes

Keywords

  • Gene expression
  • Glomerulus
  • Mass spectrometry
  • Podocyte
  • Proteomic analysis

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