%0 Journal Article %1 Takiar08022011 %A Takiar, Vinita %A Nishio, Saori %A Seo-Mayer, Patricia %A King, J. Darwin %A Li, Hui %A Zhang, Li %A Karihaloo, Anil %A Hallows, Kenneth R. %A Somlo, Stefan %A Caplan, Michael J. %D 2011 %J Proceedings of the National Academy of Sciences %K activating amp %N 6 %P 2462-2467 %R 10.1073/pnas.1011498108 %T Activating AMP-activated protein kinase (AMPK) slows renal cystogenesis %U http://www.pnas.org/content/108/6/2462.abstract %V 108 %X Renal cyst development and expansion in autosomal dominant polycystic kidney disease (ADPKD) involves both fluid secretion and abnormal proliferation of cyst-lining epithelial cells. The chloride channel of the cystic fibrosis transmembrane conductance regulator (CFTR) participates in secretion of cyst fluid, and the mammalian target of rapamycin (mTOR) pathway may drive proliferation of cyst epithelial cells. CFTR and mTOR are both negatively regulated by AMP-activated protein kinase (AMPK). Metformin, a drug in wide clinical use, is a pharmacological activator of AMPK. We find that metformin stimulates AMPK, resulting in inhibition of both CFTR and the mTOR pathways. Metformin induces significant arrest of cystic growth in both in vitro and ex vivo models of renal cystogenesis. In addition, metformin administration produces a significant decrease in the cystic index in two mouse models of ADPKD. Our results suggest a possible role for AMPK activation in slowing renal cystogenesis as well as the potential for therapeutic application of metformin in the context of ADPKD.

@article{Takiar08022011, abstract = {Renal cyst development and expansion in autosomal dominant polycystic kidney disease (ADPKD) involves both fluid secretion and abnormal proliferation of cyst-lining epithelial cells. The chloride channel of the cystic fibrosis transmembrane conductance regulator (CFTR) participates in secretion of cyst fluid, and the mammalian target of rapamycin (mTOR) pathway may drive proliferation of cyst epithelial cells. CFTR and mTOR are both negatively regulated by AMP-activated protein kinase (AMPK). Metformin, a drug in wide clinical use, is a pharmacological activator of AMPK. We find that metformin stimulates AMPK, resulting in inhibition of both CFTR and the mTOR pathways. Metformin induces significant arrest of cystic growth in both in vitro and ex vivo models of renal cystogenesis. In addition, metformin administration produces a significant decrease in the cystic index in two mouse models of ADPKD. Our results suggest a possible role for AMPK activation in slowing renal cystogenesis as well as the potential for therapeutic application of metformin in the context of ADPKD.}, added-at = {2011-03-18T17:59:42.000+0100}, author = {Takiar, Vinita and Nishio, Saori and Seo-Mayer, Patricia and King, J. Darwin and Li, Hui and Zhang, Li and Karihaloo, Anil and Hallows, Kenneth R. and Somlo, Stefan and Caplan, Michael J.}, biburl = {https://www.bibsonomy.org/bibtex/243c64556415cbcacb695e54ed74d9640/fergusg}, description = {Activating AMP-activated protein kinase (AMPK) slows renal cystogenesis}, doi = {10.1073/pnas.1011498108}, eprint = {http://www.pnas.org/content/108/6/2462.full.pdf+html}, interhash = {f6b746b7222582dbf9617fbb91b87a95}, intrahash = {43c64556415cbcacb695e54ed74d9640}, journal = {Proceedings of the National Academy of Sciences}, keywords = {activating amp}, number = 6, pages = {2462-2467}, timestamp = {2011-03-19T12:29:42.000+0100}, title = {Activating AMP-activated protein kinase (AMPK) slows renal cystogenesis}, url = {http://www.pnas.org/content/108/6/2462.abstract}, volume = 108, year = 2011 }