Olive leaf extract counteracts cell proliferation and cyst growth in an in vitro model of autosomal dominant polycystic kidney disease

2018 ◽  
Vol 9 (11) ◽  
pp. 5925-5935
Author(s):  
G. Toteda ◽  
D. Vizza ◽  
S. Lupinacci ◽  
A. Perri ◽  
M. F. Scalise ◽  
...  
Keyword(s):  
Kidney Disease ◽  
Polycystic Kidney Disease ◽  
In Vitro Model ◽  
Autosomal Dominant ◽  
Polycystic Kidney ◽  
Autosomal Dominant Polycystic Kidney ◽  
Vitro Model ◽  
Cyst Growth ◽  
Progressive Enlargement

–Autosomal dominant polycystic kidney disease (ADPKD) is characterized by progressive enlargement of kidney cysts, leading to chronic kidney disease.

scholarly journals SP007OLIVE LEAF EXTRACT INHIBITS CELLULAR AND CYSTIC GROWTH IN AUTOSOMAL DOMINANT POLYCYSTIC KIDNEY DISEASE: AN IN VITRO MODEL

2017 ◽  
Vol 32 (suppl_3) ◽  
pp. iii104-iii104
Author(s):  
Giuseppina Toteda ◽  
Anna Perri ◽  
Donatella Vizza ◽  
Simona Lupinacci ◽  
Antonella La Russa ◽  
...  
Keyword(s):  
Kidney Disease ◽  
Polycystic Kidney Disease ◽  
Leaf Extract ◽  
In Vitro Model ◽  
Autosomal Dominant ◽  
Polycystic Kidney ◽  
Autosomal Dominant Polycystic Kidney ◽  
Vitro Model ◽  
Cystic Growth

Quercetin inhibits renal cyst growth in vitro and via parenteral injection in a polycystic kidney disease mouse model

2018 ◽  
Vol 9 (1) ◽  
pp. 389-396 ◽  
Author(s):  
Yangyang Zhu ◽  
Tian Teng ◽  
Hu Wang ◽  
Hao Guo ◽  
Lei Du ◽  
...  
Keyword(s):  
Kidney Disease ◽  
Mouse Model ◽  
Polycystic Kidney Disease ◽  
Autosomal Dominant ◽  
Renal Cyst ◽  
Monogenic Disease ◽  
Polycystic Kidney ◽  
Autosomal Dominant Polycystic Kidney ◽  
Cyst Growth

Autosomal dominant polycystic kidney disease (ADPKD) is a common monogenic disease characterized by massive enlargement of fluid-filled cysts in the kidney.

scholarly journals An inhibitor of histone deacetylase 6 activity, ACY-1215, reduces cAMP and cyst growth in polycystic kidney disease

2017 ◽  
Vol 313 (4) ◽  
pp. F997-F1004 ◽  
Author(s):  
Murali K. Yanda ◽  
Qiangni Liu ◽  
Liudmila Cebotaru
Keyword(s):  
Kidney Disease ◽  
Histone Deacetylase ◽  
Polycystic Kidney Disease ◽  
Cyst Formation ◽  
Histone Deacetylase 6 ◽  
Polycystic Kidney ◽  
Autosomal Dominant Polycystic Kidney ◽  
Vitro Model ◽  
Cyst Growth

Adult-onset autosomal-dominant polycystic kidney disease (ADPKD) is caused by mutations in either the PKD1 or PKD2 gene, leading to malfunction of their gene products, polycystin 1 or 2. Histone deacetylase 6 (HDAC6) expression and activity are increased in PKD1 mutant renal epithelial cells. Here we studied the effect of ACY-1215, a specific HDAC6 inhibitor, on cyst growth in ADPKD. Treatment with ACY-1215 slowed cyst growth in a mouse model of ADPKD that forms massive cysts within 3 wk after knockout of polycystin 1 function. It also prevented cyst formation in MDCK.2 cells, an in vitro model of cystogenesis, and in an ADPKD cell line derived from the proximal tubules from a pkd1−/−.mouse (PN cells). In PN cells ACY-1215 also reduced the size of already established cysts. We found that ACY-1215 lowered cAMP levels and protein expression of adenylyl cyclase 6. Our results suggest that HDAC6 could potentially serve as a therapeutic target in ADPKD.

scholarly journals Extracellular vesicles and exosomes generated from cystic renal epithelial cells promote cyst growth in autosomal dominant polycystic kidney disease

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Hao Ding ◽  
Linda Xiaoyan Li ◽  
Peter C. Harris ◽  
Junwei Yang ◽  
Xiaogang Li
Keyword(s):  
Kidney Disease ◽  
Epithelial Cells ◽  
Polycystic Kidney Disease ◽  
Extracellular Vesicles ◽  
Autosomal Dominant ◽  
Therapeutic Potential ◽  
Polycystic Kidney ◽  
Renal Epithelial Cells ◽  
Autosomal Dominant Polycystic Kidney ◽  
Cyst Growth

AbstractAutosomal dominant polycystic kidney disease (ADPKD) is caused by germline mutations of PKD1 or PKD2 on one allele and a somatic mutation inactivating the remaining normal allele. However, if and how null ADPKD gene renal epithelial cells affect the biology and function of neighboring cells, including heterozygous renal epithelial cells, fibroblasts and macrophages during cyst initiation and expansion remains unknown. Here we address this question with a “cystic extracellular vesicles/exosomes theory”. We show that cystic cell derived extracellular vesicles and urinary exosomes derived from ADPKD patients promote cyst growth in Pkd1 mutant kidneys and in 3D cultures. This is achieved by: 1) downregulation of Pkd1 gene expression and upregulation of specific miRNAs, resulting in the activation of PKD associated signaling pathways in recipient renal epithelial cells and tissues; 2) the activation of fibroblasts; and 3) the induction of cytokine expression and the recruitment of macrophages to increase renal inflammation in cystic kidneys. Inhibition of exosome biogenesis/release with GW4869 significantly delays cyst growth in aggressive and milder ADPKD mouse models, suggesting that targeting exosome secretion has therapeutic potential for ADPKD.

scholarly journals A study of sirolimus and mTOR kinase inhibitor in a hypomorphic Pkd1 mouse model of autosomal dominant polycystic kidney disease

2019 ◽  
Vol 317 (1) ◽  
pp. F187-F196 ◽  
Author(s):  
Sara J. Holditch ◽  
Carolyn N. Brown ◽  
Daniel J. Atwood ◽  
Andrew M. Lombardi ◽  
Khoa N. Nguyen ◽  
...  
Keyword(s):  
Kidney Disease ◽  
Mouse Model ◽  
Polycystic Kidney Disease ◽  
Kidney Function ◽  
Autosomal Dominant ◽  
Kinase Inhibitor ◽  
Polycystic Kidney ◽  
Mtor Kinase ◽  
Autosomal Dominant Polycystic Kidney ◽  
Cyst Growth

Autosomal dominant polycystic kidney disease (PKD) is characterized by cyst formation and growth, which are partially driven by abnormal proliferation of tubular cells. Proproliferative mechanistic target of rapamycin (mTOR) complexes 1 and 2 (mTORC1 and mTORC2) are activated in the kidneys of mice with PKD. Sirolimus indirectly inhibits mTORC1. Novel mTOR kinase inhibitors directly inhibit mTOR kinase, resulting in the inhibition of mTORC1 and mTORC2. The aim of the present study was to determine the effects of sirolimus versus the mTOR kinase inhibitor torin2 on cyst growth and kidney function in the Pkd1 p.R3277C ( Pkd1RC/RC) mouse model, a hypomorphic Pkd1 model orthologous to the human condition, and to determine the effects of sirolimus versus torin2 on mTORC1 and mTORC2 signaling in PKD1−/− cells and in the kidneys of Pkd1RC/RC mice. In vitro, both inhibitors reduced mTORC1 and mTORC2 phosphorylated substrates and negatively impacted cellular metabolic activity, as measured by MTT assay. Pkd1RC/RC mice were treated with sirolimus or torin2 from 50 to 120 days of age. Torin2 was as effective as sirolimus in decreasing cyst growth and improving loss of kidney function. Both sirolimus and torin2 decreased phosphorylated S6 protein, phosphorylated eukaryotic translation initiation factor 4E-binding protein 1, phosphorylated Akt, and proliferation in Pkd1RC/RC kidneys. In conclusion, torin2 and sirolimus were equally effective in decreasing cyst burden and improving kidney function and mediated comparable effects on mTORC1 and mTORC2 signaling and proliferation in the Pkd1RC/RC kidney.

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