Crystal growth inhibitors for the prevention of L-cystine kidney stones through molecular design.
Crystal growth inhibitors for the prevention of L-cystine kidney stones through molecular design.
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DOI:
10.1126/science.1191968
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发表时间:
2010-10-15
期刊:
影响因子:
--
通讯作者:
Ward MD
中科院分区:
文献类型:
--
作者:
Rimer JD;An Z;Zhu Z;Lee MH;Goldfarb DS;Wesson JA;Ward MD
Crystallization of L-cystine is a critical process in the pathogenesis of kidney stone formation in cystinuria, a disorder affecting at least 20,000 U.S. citizens. Current therapeutic treatments for this disease are somewhat effective but often lead to adverse side effects. Real-time in situ atomic force microscopy (AFM) reveals that L-cystine dimethylester (L-CDME) and L-cystine methylester (L-CME) – structural mimics of L-cystine – dramatically reduce the growth velocity of the six symmetry-equivalent {100} steps, emanating from well-defined hexagonal spiral dislocations, due to specific binding at the crystal surface that frustrates the attachment of L-cystine solute molecules. Surprisingly, L-CDME and L-CME produce L-cystine crystals with different habits that reveal different binding modes of the two inhibitors at the crystal surfaces. The AFM observations at the nanoscale are mirrored by reduced crystal yield and crystal size in the presence of L-CDME and L-CME, collectively suggesting a new pathway to the prevention of L-cystine stones through the design of crystal growth inhibitors.
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