淡江大學機構典藏:Item 987654321/104670
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/104670


    Title: Protein-bound uremic toxins induce tissue remodeling by targeting the EGF receptor
    Authors: CY, Sun;GH, Young;YT, Hsieh;YH, Chen;MS, Wu;VC, Wu;JH, Lee;CC, Lee
    Keywords: EGF;matrix metalloproteinases;nephrotoxicity;signaling;tubule cells;uremia
    Date: 2015-02-10
    Issue Date: 2016-01-06 11:06:43 (UTC+8)
    Abstract: Indoxyl sulfate and p-cresol sulfate have been suggested to induce kidney tissue remodeling. This study aimed to clarify the molecular mechanisms underlying this tissue remodeling using cultured human proximal renal tubular cells and half-nephrectomized mice treated with indoxyl sulfate or p-cresol sulfate as study models. Molecular docking results suggested that indoxyl sulfate and p-cresol sulfate dock on a putative interdomain pocket of the extracellular EGF receptor. In vitro spectrophotometric analysis revealed that the presence of a synthetic EGF receptor peptide significantly decreased the spectrophotometric absorption of indoxyl sulfate and p-cresol sulfate. In cultured cells, indoxyl sulfate and p-cresol sulfate activated the EGF receptor and downstream signaling by enhancing receptor dimerization, and increased expression of matrix metalloproteinases 2 and 9 in an EGF receptor-dependent manner. Treatment of mice with indoxyl sulfate or p-cresol sulfate significantly activated the renal EGF receptor and increased the tubulointerstitial expression of matrix metalloproteinases 2 and 9. In conclusion, indoxyl sulfate and p-cresol sulfate may induce kidney tissue remodeling through direct binding and activation of the renal EGF receptor.
    Relation: Journal of the American Society of Nephrology 26(2), pp.281-290
    DOI: 10.1681/ASN.2014010021
    Appears in Collections:[Graduate Institute & Department of Chemistry] Journal Article

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