alexa Src inhibition ameliorates polycystic kidney disease.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Genetic Syndromes & Gene Therapy

Author(s): Sweeney WE Jr, von Vigier RO, Frost P, Avner ED

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Abstract Despite identification of the genes responsible for autosomal dominant polycystic kidney disease (PKD) and autosomal recessive PKD (ARPKD), the precise functions of their cystoprotein products remain unknown. Recent data suggested that multimeric cystoprotein complexes initiate aberrant signaling cascades in PKD, and common components of these signaling pathways may be therapeutic targets. This study identified c-Src (pp60(c-Src)) as one such common signaling intermediate and sought to determine whether Src activity plays a role in cyst formation. With the use of the nonorthologous BPK murine model and the orthologous PCK rat model of ARPKD, greater Src activity was found to correlate with disease progression. Inhibition of Src activity with the pharmacologic inhibitor SKI-606 resulted in amelioration of renal cyst formation and biliary ductal abnormalities in both models. Furthermore, the effects of Src inhibition in PCK kidneys suggest that the ErbB2 and B-Raf/MEK/ERK pathways are involved in Src-mediated signaling in ARPKD and that this occurs without reducing elevated cAMP. These data suggest that Src inhibition may provide therapeutic benefit in PKD.
This article was published in J Am Soc Nephrol and referenced in Journal of Genetic Syndromes & Gene Therapy

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