Gene expression profiling of the developing mouse kidney and embryo

Shaw, Lisa orcid iconORCID: 0000-0002-6226-6467, Johnson, Penny A and Kimber, Susan J. (2010) Gene expression profiling of the developing mouse kidney and embryo. In Vitro Cellular & Developmental Biology - Animal, 46 (2). pp. 155-165. ISSN 1071-2690

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The metanephros is formed from the reciprocal inductive interaction of two precursor tissues, the metanephric mesenchyme (MM) and the ureteric bud (UB). The UB induces MM to condense and differentiate forming the glomerulus and renal tubules, whilst the MM induces the UB to differentiate into the collecting tubules of the mature nephron. Uninduced MM is considered the progenitor cell population of the developing metanephros because of its potential to differentiate into more renal cell types than the UB. Previous studies have identified the phenotype of renal precursor cells; however, expression of candidate marker genes have not been analysed in other tissues of the murine embryo. We have assayed up to 19 candidate genes in eight embryonic tissues at five gestation stages of the mouse embryo to identify markers definitively expressed by renal cells during metanephric induction and markers developmentally regulated during kidney maturation. We then analysed their expression in other developing tissues. Results show Dcn, Hoxc9, Mest, Wt1 and Ywhaq were expressed at moderate to high levels during the window of metanephric specification and early differentiation (E10.5-E12.5 dpc), and Hoxc9, Ren1 and Wt1 expression was characteristic of mature renal cells. We demonstrated Cd24a, Cdh11, Mest, Scd2 and Sim2 were regulated during brain development, and Scd2, Cd24a and Sip1 expression was enriched in developing liver. These markers may be useful negative markers of kidney development. Use of a combination of highly expressed and negative markers may aid in the identification and removal of non-renal cells from heterogeneous populations of differentiating stem cells.

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