Patterning a complex organ: branching morphogenesis and nephron segmentation in kidney development.
Citations
679 citations
Cites background from "Patterning a complex organ: branchi..."
...…the MM and ureteric bud lineage segregate from one another have not been clarified, despite many reports showing the importance of various growth factors during kidney development (Costantini and Kopan, 2010; Fleming et al., 2013; Kim and Dressler, 2005; Moriya et al., 1993; Poladia et al., 2006)....
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...However, the mechanisms underlying how the nascent mesoderm becomes committed to the intermediate mesoderm and how the MM and ureteric bud lineage segregate from one another have not been clarified, despite many reports showing the importance of various growth factors during kidney development (Costantini and Kopan, 2010; Fleming et al., 2013; Kim and Dressler, 2005; Moriya et al., 1993; Poladia et al., 2006)....
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641 citations
431 citations
Cites background from "Patterning a complex organ: branchi..."
...differentiates into the metanephrogenic blastema and sequentially differentiates into proximal tubules, loop of henle, and distal tubules[21]....
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405 citations
392 citations
Cites background from "Patterning a complex organ: branchi..."
...The ureteric bud undergoes branching morphogenesis to form the collecting system and is required for the formation of an interconnected collecting duct (Costantini and Kopan, 2010)....
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References
1,046 citations
"Patterning a complex organ: branchi..." refers background in this paper
...…requires autonomous expression of WT1 (Hartwig et al., 2010) and Sall1 (Nishinakamura and Osafune, 2006), the receptors FGFR1 and 2 (Poladia et al., 2006), and sources of FGF8 (Grieshammer et al., 2005; Perantoni et al., 2005) and BMP7 (Dudley et al., 1999; Kazama et al., 2008; Luo et al., 1995)....
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1,006 citations
"Patterning a complex organ: branchi..." refers background in this paper
...Cells in the dorsal IM coalesce into the nephric duct (ND, also called the Wolffian duct) (Saxen, 1987), while the mesenchymal cell population in the ventral IM, called the ‘‘nephrogenic cord,’’ remains undifferentiated (Figures 1 A–1C)....
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...Polarity becomes apparent morphologically as the RV becomes the comma-shaped body; these stereotypical structures were so named because the first cells to elongate, change shape, and form a ‘‘slit’’ are located at the proximal end (Saxen, 1987)....
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...Nascent tubular structures normally appear beneath the UB tips, while the MM above the tips remains undifferentiated (Saxen, 1987)....
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860 citations
"Patterning a complex organ: branchi..." refers background in this paper
...Ectodermal signals are also required for the continued expression of Lhx1 and Pax2 in the ND, which in turn are important formaintenance of the epithelium (James and Schultheiss, 2005; Torres et al., 1995)....
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...Ectodermal signals are also required for the continued expression of Lhx1 and Pax2 in the ND, which in turn are important formaintenance of the epithelium (James and Schultheiss, 2005; Torres et al., 1995)....
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850 citations
"Patterning a complex organ: branchi..." refers background or result in this paper
...Since mice that are simultaneously deficient for both Six2 andWnt9b cannot undergoMET (Kobayashi et al., 2008), Six2 activity in cells within the capping mesenchyme most likely blocks MET by antagonizing the b-catenin stabilizing effects of Wnt9b and thus maintaining the progenitor cell population…...
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...Chimera analysis indicated that although Six2"/" cells could contribute to all cell fates within the nephron, they could not self-renew (Kobayashi et al., 2008)....
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...…mesenchyme most likely blocks MET by antagonizing the b-catenin stabilizing effects of Wnt9b and thus maintaining the progenitor cell population (Carroll et al., 2005; Kispert et al., 1998; Kobayashi et al., 2008; Kuure et al., 2007; Majumdar et al., 2003; Park et al., 2007; Self et al., 2006)....
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...This is consistent with Six2/Cited expression marking the committed progenitor pool of the renal epithelium (Boyle et al., 2008; Kobayashi et al., 2008)....
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...Importantly, fate mapping confirms that, like Six2"/" cells, Wnt4"/" cells can only contribute to the RV and its subsequent structures but can no longer contribute to the progenitor pool (Kobayashi et al., 2008; Shan et al., 2009)....
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807 citations
"Patterning a complex organ: branchi..." refers background in this paper
...As noted above, after the Six2-expressing MM cells extinguish Cited1, they begin to stabilize b-catenin in response to Wnt9b, which can instruct MM cells to undergo MET....
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...Mice 706 Developmental Cell 18, May 18, 2010 ª2010 Elsevier Inc. deficient in Wnt9b fail to undergo MET (Carroll et al., 2005), whereas mice deficient in Six2 undergo exuberant MET: they form renal vesicle (RV)-like epithelial aggregates above and below the UB branches (Figure 4E) (Self et al., 2006)....
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...Expression of MET is important for the ability of HGF to regulate UB branching (Liu et al., 2009)....
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...…mesenchyme most likely blocks MET by antagonizing the b-catenin stabilizing effects of Wnt9b and thus maintaining the progenitor cell population (Carroll et al., 2005; Kispert et al., 1998; Kobayashi et al., 2008; Kuure et al., 2007; Majumdar et al., 2003; Park et al., 2007; Self et al., 2006)....
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...…Wnt9b are not interchangeable: both factors are capable of inducing RV formation and tubulogenesis in isolated MM, but Wnt9b-expressing cells cannot induce differentiation in Wnt4"/" MM, whereas Wnt4 can induce RV formation and tubulogenesis in competent Wnt9b"/" mesenchyme (Carroll et al., 2005)....
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