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Renal epithelial development in organotypic culture
E D Avner1, N P Piesco, W E Sweeney
1Department of Pediatrics (Nephrology), University of Pittsburgh School of Medicine, Pennsylvania.
Pediatric Nephrology (Berlin, Germany)
|January 1, 1988
Summary
This study presents a novel in vitro model using fetal murine kidney organ culture for studying renal epithelial differentiation. The system allows detailed investigation of kidney development independent of blood flow and urine production.
Area of Science:
- Developmental Biology
- Nephrology
- Cell Biology
Background:
- Investigating renal epithelial differentiation requires models that isolate developmental processes.
- Existing models may not fully separate differentiation from physiological functions like filtration and perfusion.
Purpose of the Study:
- To describe a novel in vitro model system for studying renal epithelial differentiation.
- To enable experimental separation of organ growth and differentiation from filtration and serum/urine effects.
Main Methods:
- Isolation of fetal murine metanephric tissue (nephrogenic blastema and ureteric bud).
- Organ culture of intact metanephric tissue in a defined, serum-free medium for 120 hours.
- Utilized a Trowell-type assembly for organ culture.
Main Results:
- Achieved advanced organotypic proximal tubular and glomerular epithelial differentiation in vitro.
- Demonstrated differentiation in the absence of vascularization, perfusion, and urine production.
- Identified growth factor requirements and effects of hormonal alterations on tubular development.
Conclusions:
- Whole organ metanephric organ culture is a valuable in vitro model for renal epithelial differentiation studies.
- The model system effectively separates differentiation from complex physiological processes.
- Facilitates future research into normal and abnormal kidney development.