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Updated: May 29, 2026
08:06
Isolation and Culture of Cells from the Nephrogenic Zone of the Embryonic Mouse Kidney
Published on: April 22, 2011
Renal collecting system growth and function depend upon embryonic γ1 laminin expression.
Dong-Hua Yang1, Karen K McKee, Zu-Lin Chen
1Department of Pathology and Laboratory Medicine, Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
Development (Cambridge, England)
|September 10, 2011
Summary
Laminins are crucial for kidney development. Inactivating the Lamc1 gene in mice led to kidney malformations, impaired growth, and water transport deficits, highlighting laminins essential role in kidney structure and function.
Area of Science:
- Developmental Biology
- Nephrology
- Cell Biology
Background:
- Laminins are essential components of basement membranes, playing critical roles in tissue development and function.
- The specific functions of laminins in the developing renal collecting system remain incompletely understood.
Purpose of the Study:
- To investigate the role of laminins, specifically γ1 laminins, in the development and function of the mouse renal collecting system.
Main Methods:
- Inactivation of the Lamc1 gene in the developing mouse ureteric bud (UB).
- Analysis of embryonic kidney development, including proliferation, branching, and vesicle formation.
- Assessment of basement membrane protein and signaling pathway component levels (e.g., α6 integrin, FGF2).
- In vitro studies of laminin-deficient collecting duct cells in collagen gels.
Main Results:
- Lamc1 gene inactivation resulted in laminin deficiency, leading to failed UB development or small kidneys with impaired proliferation and branching.
- Deficiency caused delayed renal vesicle formation and postnatal water transport deficits.
- Absence of basement membrane proteins, reduced α6 integrin and FGF2 levels, and decreased mRNA for FGF2 and GDNF/RET/WNT11 signaling mediators were observed.
- Laminin-deficient cells showed reduced proliferation, branching, and activation of growth factor- and integrin-dependent pathways.
Conclusions:
- γ1 laminins are required for the assembly of the renal collecting duct system basement membrane.
- Immobilized laminin ligands act as solid-phase agonists, promoting branching morphogenesis, growth, and water transport functions in the kidney.
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