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  • Enhanced metanephric specification to functional proximal tubule enables toxicity screening and infectious disease modelling in kidney organoids.

Enhanced metanephric specification to functional proximal tubule enables toxicity screening and infectious disease modelling in kidney organoids.

Nature communications (2022-10-09)
Jessica M Vanslambrouck, Sean B Wilson, Ker Sin Tan, Ella Groenewegen, Rajeev Rudraraju, Jessica Neil, Kynan T Lawlor, Sophia Mah, Michelle Scurr, Sara E Howden, Kanta Subbarao, Melissa H Little
ABSTRACT

While pluripotent stem cell-derived kidney organoids are now being used to model renal disease, the proximal nephron remains immature with limited evidence for key functional solute channels. This may reflect early mispatterning of the nephrogenic mesenchyme and/or insufficient maturation. Here we show that enhanced specification to metanephric nephron progenitors results in elongated and radially aligned proximalised nephrons with distinct S1 - S3 proximal tubule cell types. Such PT-enhanced organoids possess improved albumin and organic cation uptake, appropriate KIM-1 upregulation in response to cisplatin, and improved expression of SARS-CoV-2 entry factors resulting in increased viral replication. The striking proximo-distal orientation of nephrons resulted from localized WNT antagonism originating from the organoid stromal core. PT-enhanced organoids represent an improved model to study inherited and acquired proximal tubular disease as well as drug and viral responses.

MATERIALS
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Product Description

Sigma-Aldrich
Anti-TMPRSS2 Antibody, clone P5H9-A3, clone P5H9-A3, from mouse