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Kidney failure in mice lacking the tetraspanin CD151
Norman Sachs1, Maaike Kreft, Marius A van den Bergh Weerman
1Division of Cell Biology, The Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands.
The Journal of Cell Biology
|October 4, 2006
Summary
Tetraspanin CD151 deficiency causes kidney failure in mice, mimicking human disease. This highlights CD151's crucial role in maintaining kidney function through integrin alpha3beta1 interactions in podocytes.
Area of Science:
- Cell Biology
- Nephrology
- Genetics
Background:
- Tetraspanin CD151 interacts with integrin alpha3beta1.
- CD151 mutations cause human kidney failure, skin blistering, and deafness.
- Integrin alpha3 deficiency leads to severe kidney and lung abnormalities in mice.
Purpose of the Study:
- To investigate the role of CD151 in kidney function.
- To determine if CD151 deficiency recapitulates human renal pathology in mice.
- To explore the interaction between CD151 and integrin alpha3beta1 in podocytes.
Main Methods:
- Generation of Cd151-null mice.
- Generation of podocyte-specific conditional knockout mice for integrin alpha3.
- Phenotypic analysis of kidney pathology, including proteinuria, glomerulosclerosis, and tubular dilation.
Main Results:
- Cd151-null mice developed progressive proteinuria, focal glomerulosclerosis, glomerular basement membrane disorganization, and tubular cystic dilation with age.
- Cd151-null mice did not exhibit skin blistering or sensorineural deafness.
- Podocyte-specific knockout of integrin alpha3 resulted in similar renal defects as observed in Cd151 knockout mice.
Conclusions:
- CD151 is essential for maintaining kidney structure and function.
- CD151 deficiency in mice models key aspects of human kidney disease.
- CD151 likely strengthens alpha3beta1-mediated adhesion in podocytes, crucial for renal health.
