Podocytes are visceral epithelial cells in the kidney and play important roles in the glomerular filtration barrier. Podocyte injury is a key factor in the development of early diabetic nephropathy (DN). In this study, to understand the proteome changes in podocytes in DN, we constructed a 2-DE reference map for the primary cultured glomerular epithelial cells (GECs, podocytes) in the presence normal glucose (5 mM) and high glucose (30 mM), respectively. High glucose exposed GECs showed an increased production of ROS and more cellular hypertrophy compared with normal glucose exposed GECs. Differentially expressed GECs proteins between the normal and high glucose condition were identified using ESI-Q-TOF MS/MS. Poly (c) binding protein 1 was up-regulated and ATP synthase beta subunit, enolase 2, beta actin were downregulated in high glucose treated GECs. ATP synthase beta subunit expression was confirmed by Western blotting. The expression of vimentin (not significantly changed) and CLP36 (down-regulated), which are expected to be involved podocyte pathology in DN and then observed by Western blotting. These results will provide a better understanding of the development of early DN via glucose metabolism of GECs under hyperglycemic conditions.
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
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