PMID: 3760778Oct 1, 1986Paper

Novel macrophage receptor for glucose-modified proteins is distinct from previously described scavenger receptors

The Journal of Experimental Medicine
H VlassaraA Cerami

Abstract

A high-affinity macrophage receptor has been identified that recognizes proteins modified by a common in vivo process, long-term nonenzymatic reaction of glucose with proteins (AGE proteins). This receptor for glucose-modified proteins is now shown to be distinct from previously described scavenger receptors, using competition and crosscompetition experiments between AGE-modified protein and a variety of in vitro-modified scavenger receptor ligands, including unmodified BSA, unmodified low-density lipoproteins (LDL), acetyl-LDL, maleyl-BSA, and formaldehyde-treated BSA. Furthermore, the specific pattern of AGE-protein receptor inhibition by the polyanionic compounds polyinosinic acid, polyadenylic acid, polyglutamic acid, polycytidylic acid, fucoidin, and heparin was distinctly different from that of acetyl-LDL. By thus selectively recognizing a time-dependent in vivo protein modification, macrophages may preferentially degrade senescent macromolecules, thereby having an important role in the regulation of extracellular protein turnover.

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Citations

Mar 1, 1991·Diabetes/metabolism Reviews·G PuglieseJ R Williamson
Jan 5, 2002·Diabetes/metabolism Research and Reviews·H Vlassara
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