
| 10.1172/JCI121987
http://scihub22266oqcxt.onion/10.1172/JCI121987
 30741721!6391108!30741721
free
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J+Clin+Invest 2019 ; 129 (3): 1129-1151 Nephropedia Template TP
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PTEN-induced partial epithelial-mesenchymal transition drives diabetic kidney disease #MMPMID30741721Li Y; Hu Q; Li C; Liang K; Xiang Y; Hsiao H; Nguyen TK; Park PK; Egranov SD; Ambati CR; Putluri N; Hawke DH; Han L; Hung MC; Danesh FR; Yang L; Lin CJ Clin Invest 2019[Mar]; 129 (3): 1129-1151 PMID30741721show ga
Epithelial-mesenchymal transition (EMT) contributes significantly to interstitial matrix deposition in diabetic kidney disease (DKD). However, detection of EMT in kidney tissue is impracticable, and anti-EMT therapies have long been hindered. We reported that phosphatase and tensin homolog (PTEN) promoted transforming growth factor beta 1 (TGF-beta), sonic hedgehog (SHH), connective tissue growth factor (CTGF), interleukin 6 (IL-6), and hyperglycemia-induced EMT when PTEN was modified by a MEX3C-catalyzed K27-linked polyubiquitination at lysine 80 (referred to as PTENK27-polyUb). Genetic inhibition of PTENK27-polyUb alleviated Col4a3 knockout-, folic acid-, and streptozotocin-induced (STZ-induced) kidney injury. Serum and urine PTENK27-polyUb concentrations were negatively correlated with glomerular filtration rate (GFR) for diabetic patients. Mechanistically, PTENK27-polyUb facilitated dephosphorylation and protein stabilization of TWIST, SNAI1, and YAP in renal epithelial cells, leading to enhanced EMT. We identified that a small molecule, triptolide, inhibited MEX3C-catalyzed PTENK27-polyUb and EMT of renal epithelial cells. Treatment with triptolide reduced TWIST, SNAI1, and YAP concurrently and improved kidney health in Col4a3 knockout-, folic acid-injured disease models and STZ-induced, BTBR ob/ob diabetic nephropathy models. Hence, we demonstrated the important role of PTENK27-polyUb in DKD and a promising therapeutic strategy that inhibited the progression of DKD.|*Epithelial-Mesenchymal Transition[MESH]|Adaptor Proteins, Signal Transducing/genetics/metabolism[MESH]|Animals[MESH]|Autoantigens/genetics/metabolism[MESH]|Cell Cycle Proteins/genetics/metabolism[MESH]|Cell Line[MESH]|Collagen Type IV/genetics/metabolism[MESH]|Diabetes Mellitus, Experimental/genetics/*metabolism/pathology[MESH]|Diabetic Nephropathies/genetics/*metabolism/pathology[MESH]|Humans[MESH]|Kidney/*metabolism/pathology[MESH]|Mice[MESH]|Mice, Knockout[MESH]|PTEN Phosphohydrolase/genetics/*metabolism[MESH]|Snail Family Transcription Factors/genetics/metabolism[MESH]|Twist-Related Protein 1/genetics/metabolism[MESH]
  
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