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Comparative Proteomic Analysis of Rapamycin Versus Cyclosporine Combination Treatment in Mouse Podocytes.

 B.S. Kim  ;  Y. Cho  ;  H. Lee  ;  D.J. Joo  ;  K.H. Huh  ;  M.S. Kim  ;  Y.S. Kim 
 Transplantation Proceedings, Vol.48(4) : 1297-1301, 2016 
Journal Title
 Transplantation Proceedings 
Issue Date
Acute Kidney Injury/chemically induced ; Animals ; Calcineurin Inhibitors/pharmacokinetics* ; Calcineurin Inhibitors/toxicity ; Cells, Cultured ; Cyclosporine/pharmacology* ; Cyclosporine/toxicity ; Drug Combinations ; Immunosuppressive Agents/pharmacology* ; Immunosuppressive Agents/toxicity ; Kidney/metabolism ; Mice ; Podocytes/drug effects* ; Podocytes/metabolism ; Proteins/drug effects ; Proteins/metabolism* ; Proteinuria/metabolism ; Proteomics/methods ; Sirolimus/pharmacology* ; Sirolimus/toxicity ; TOR Serine-Threonine Kinases/antagonists & inhibitors
BACKGROUND: The mechanism of podocyte injury observed with the use of rapamycin (RPM) remains unclear. The conversion from calcineurin inhibitors (CNIs) to RPM in kidney transplant recipients has been associated with a higher incidence of proteinuria and renal injury. In this study, we performed proteomic analyses to investigate the alteration of protein expression in mouse podocytes treated with RPM in comparison with CNI/RPM combination. METHODS: Immortalized mouse podocytes were treated with 20 nmol/L RPM or 20 nmol/L RPM + 1 μg/mL cyclosporine. Podocyte proteins were separated by 2-dimensional polyacrylamide gel electrophoresis (2DE) and identified by matrix-assisted laser desorption time-of-flight (MALDI-TOF) mass spectrometry and peptide fingerprinting. Selected proteins were analyzed by means of Western blot assay. RESULTS: We identified 36 differently expressed proteins after isolated RPM or CNI/RPM combination treatment in cultured mouse podocytes. There are 3 distinct patterns of protein expression: (1) potentiated down- or upregulation of proteins by CNI/RPM treatment compared with isolated RPM treatment (n = 4); (2) partial offset of down-regulation by CNI/RPM in comparison with RPM treatment (n = 25); (3) no difference in down-regulation between RPM and CNI/RPM treatment (n = 5). We found a significant interplay between RPM and CNI on the expression of the selected proteins in mouse podocytes. This might explain the higher incidence of proteinuria by CNI/RPM combination in clinical settings. CONCLUSIONS: Further study is required to elucidate the target protein associated with RPM-induced podocyte injury.
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1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
김명수(Kim, Myoung Soo) ORCID logo https://orcid.org/0000-0002-8975-8381
김범석(Kim, Beom Seok) ORCID logo https://orcid.org/0000-0002-5732-2583
김유선(Kim, Yu Seun) ORCID logo https://orcid.org/0000-0002-5105-1567
주동진(Joo, Dong Jin) ORCID logo https://orcid.org/0000-0001-8405-1531
허규하(Huh, Kyu Ha) ORCID logo https://orcid.org/0000-0003-1364-6989
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