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Screening for genes up-regulated in 5/6 nephrectomized mouse kidney.

Authors: Zhang, H  Wada, J  Kanwar, YS  Tsuchiyama, Y  Hiragushi, K  Hida, K  Shikata, K  Makino, H 
Citation: Zhang H, etal., Kidney Int 1999 Aug;56(2):549-58.
Pubmed: (View Article at PubMed) PMID:10432394
DOI: Full-text: DOI:10.1046/j.1523-1755.1999.00561.x

BACKGROUND: In diabetic and nondiabetic renal diseases, glomerular hyperfiltration is believed to play a central role in the subsequent progression of glomerulosclerosis and interstitial renal scarring. To identify genes involved in the process of hyperfiltration and hypertrophy, a polymerase chain reaction (PCR)-based subtraction method, that is, representational difference analysis of cDNA (cDNA-RDA), was employed. METHODS: Ten-week-old ICR mice were 5/6 nephrectomized and sham operated. After two weeks, mRNAs were isolated from control and remnant kidneys and were subjected to the cDNA-RDA procedure. RESULTS: We identified 10 known and 9 novel genes. Among 19 clones, 12 clones (8 known and 4 novel) showed 1.5- to 6-fold up-regulation by Northern blot analyses. The remaining seven clones were rarely expressed genes and were barely detected by Northern blot analyses, and their up-regulated expression was confirmed by Southern blot analysis using the PCR-amplified representative amplicons. The known genes included kidney androgen-regulated protein, major urinary protein, lysozyme M, metalloproteinase-3 tissue inhibitor, chaperonin 10, cytochrome oxidase I, epsilon-sarcoglycan, ribosomal protein S3a, G-proteingamma10 subunit, and splicing factor 9G8. All of the isolated known genes have not been reported to be up-regulated in the nephrectomized mouse kidney and suggest the possible role of androgen action, mitochondrial functions, matrix metabolism, cell-matrix interactions, and intracellular signaling events in the initiation of the progressive renal injury of the remnant kidney. Furthermore, cDNA-RDA facilitates the discovery of novel genes, including two kidney-specific genes. CONCLUSIONS: The isolated known and novel genes may be involved in the pathobiological process of initial hyperfiltration and hypertrophy of remnant kidney.

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RGD ID: 1299473
Created: 2004-06-01
Species: All species
Last Modified: 2004-06-01
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.