PMID- 19634143 OWN - NLM STAT- MEDLINE DCOM- 20091231 LR - 20131121 IS - 1615-9861 (Electronic) IS - 1615-9853 (Linking) VI - 9 IP - 18 DP - 2009 Sep TI - Quantitative proteomic profiling identifies new renal targets of copper(II)-selective chelation in the reversal of diabetic nephropathy in rats. PG - 4309-20 LID - 10.1002/pmic.200900285 [doi] AB - This study aimed to identify new diabetic nephropathy (DN)-related proteins and renal targets of the copper(II)-selective chelator, triethylenetetramine (TETA) in streptozotocin-diabetic rats. We used the recently developed iTRAQ technology to compare renal protein profiles among non-diabetic, diabetic, and TETA-treated diabetic rats. In diabetic kidneys, tubulointerstitial nephritis antigen (TINag), voltage-dependent anion-selective channel (VDAC) 1, and VDAC2 were up-regulated in parallel with alterations in expression of proteins with functions in oxidative stress and oxidative phosphorylation (OxPhos) pathways. By contrast, mitochondrial HSP 60, Cu/Zn-superoxide dismutase, glutathione S-transferase alpha3 and aquaporin-1 were down-regulated in diabetic kidneys. Following TETA treatment, levels of D-amino acid oxidase-1, epoxide hydrolase-1, aquaporin-1, and a number of mitochondrial proteins were normalized, with concomitant amelioration of albuminuria. Changes in levels of TINag, collagen VIalpha1, actinin 4alpha, apoptosis-inducing factor 1, cytochrome C, histone H3, VDAC1, and aquaporin-1 were confirmed by Western blotting or immunohistochemistry. Changes in expression of proteins related to tubulointerstitial function, podocyte structure, and mitochondrial apoptosis are implicated in the mechanism of DN and their reversal by TETA. These findings are consistent with the hypothesis that this new experimental therapy may be useful for treatment of DN. FAU - Gong, Deming AU - Gong D AD - School of Biological Sciences, University of Auckland, Auckland, New Zealand. FAU - Chen, Xiuyin AU - Chen X FAU - Middleditch, Martin AU - Middleditch M FAU - Huang, Liangdong AU - Huang L FAU - Vazhoor Amarsingh, Greeshma AU - Vazhoor Amarsingh G FAU - Reddy, Shiva AU - Reddy S FAU - Lu, Jun AU - Lu J FAU - Zhang, Shaoping AU - Zhang S FAU - Ruggiero, Katya AU - Ruggiero K FAU - Phillips, Anthony R J AU - Phillips AR FAU - Cooper, Garth J S AU - Cooper GJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Proteomics JT - Proteomics JID - 101092707 RN - 0 (Cations) RN - 0 (Cell Adhesion Molecules) RN - 0 (Chelating Agents) RN - 0 (Collagen Type VI) RN - 789U1901C5 (Copper) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - SJ76Y07H5F (Trientine) SB - IM MH - Animals MH - Cations/metabolism MH - Cell Adhesion Molecules/metabolism MH - Chelating Agents/*pharmacology MH - Collagen Type VI/metabolism MH - Copper/*metabolism MH - Diabetes Mellitus, Experimental/drug therapy/*metabolism/urine MH - Diabetic Nephropathies/drug therapy/*metabolism/urine MH - Down-Regulation MH - Glutathione Peroxidase/metabolism MH - Immunohistochemistry MH - Male MH - Nephritis, Interstitial/metabolism MH - Proteomics/*methods MH - Rats MH - Rats, Wistar MH - Superoxide Dismutase/metabolism MH - Trientine/*pharmacology MH - Up-Regulation EDAT- 2009/07/28 09:00 MHDA- 2010/01/01 06:00 CRDT- 2009/07/28 09:00 PHST- 2009/07/28 09:00 [entrez] PHST- 2009/07/28 09:00 [pubmed] PHST- 2010/01/01 06:00 [medline] AID - 10.1002/pmic.200900285 [doi] PST - ppublish SO - Proteomics. 2009 Sep;9(18):4309-20. doi: 10.1002/pmic.200900285.