The receptor for advanced glycation end products (RAGE) specifically recognizes methylglyoxal-derived AGEs.

The receptor for advanced glycation end products (RAGE) specifically recognizes methylglyoxal-derived AGEs.
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DOI:
10.1021/bi500046t
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发表时间:
2014-05-27
期刊:
影响因子:
2.9
通讯作者:
Shekhtman A
Shekhtman A
中科院分区:
生物学3区
文献类型:
--
作者:
Xue J;Ray R;Singer D;Böhme D;Burz DS;Rai V;Hoffmann R;Shekhtman A

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Diabetes-induced hyperglycemia increases the extracellular concentration of methylglyoxal. Methylglyoxal-derived hydroimidazolones (MG-H) form advanced glycation end products (AGEs) that accumulate in the serum of diabetic patients. The binding of hydroimidozolones to the receptor for AGEs (RAGE) results in long-term complications of diabetes typified by vascular and neuronal injury. Here we show that binding of methylglyoxal-modified albumin to RAGE results in signal transduction. Chemically synthesized peptides containing hydroimidozolones bind specifically to the V domain of RAGE with nanomolar affinity. The solution structure of an MG-H1–V domain complex revealed that the hydroimidazolone moiety forms multiple contacts with a positively charged surface on the V domain. The high affinity and specificity of hydroimidozolones binding to the V domain of RAGE suggest that they are the primary AGE structures that give rise to AGEs–RAGE pathologies.
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发表时间: 2010-10-13
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