The human kidney is made up about 1 million nephrons, the working unit of the kidney. Each nephron is a very complex structure with highly specialized segments responsible for specific physiological functions. While the initial induction events of nephrogenesis have been well studied, the developmental patterning events that form the segments of the mature nephron are not well understood. The goal of this work is to understand the formation of the nephron by identifying transcriptional regulators involved in this process. To isolate segments of the nephron, we will use Auto-Fluorescent Protein reporters expressed in each segment of the nephron in transgenic mice. Using various expression profile techniques, we will compare each segment to identify genes differentially expressed in the nephron. Using a high throughput in situ hybridization approach we will characterize the expression of identified candidates in greater detail.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Postdoctoral Individual National Research Service Award (F32)
Project #
5F32DK060319-03
Application #
6657335
Study Section
General Medicine B Study Section (GMB)
Program Officer
Rankin, Tracy L
Project Start
2002-09-30
Project End
2004-09-29
Budget Start
2003-09-30
Budget End
2004-09-29
Support Year
3
Fiscal Year
2003
Total Cost
$46,420
Indirect Cost
Name
Harvard University
Department
Microbiology/Immun/Virology
Type
Schools of Arts and Sciences
DUNS #
082359691
City
Cambridge
State
MA
Country
United States
Zip Code
02138
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Yu, Jing; Valerius, M Todd; Duah, Mary et al. (2012) Identification of molecular compartments and genetic circuitry in the developing mammalian kidney. Development 139:1863-73
Georgas, Kylie; Rumballe, Bree; Valerius, M Todd et al. (2009) Analysis of early nephron patterning reveals a role for distal RV proliferation in fusion to the ureteric tip via a cap mesenchyme-derived connecting segment. Dev Biol 332:273-86
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Park, Joo-Seop; Valerius, M Todd; McMahon, Andrew P (2007) Wnt/beta-catenin signaling regulates nephron induction during mouse kidney development. Development 134:2533-9
Cheng, Hui-Teng; Kim, Mijin; Valerius, M Todd et al. (2007) Notch2, but not Notch1, is required for proximal fate acquisition in the mammalian nephron. Development 134:801-11