The engagement of the receptor for advanced glycation end products (RAGE) on the cell surface induces cellular dysfunction in a number of pathophysiological situations of vascular dysfunction, tumor cell invasion, inflammatory response, and T cell infiltration. The administration of truncated, soluble RAGE can modulate RAGE-mediated perturbations. Here, we report a novel splice variant (Δ 8 -RAGE) of RAGE mRNA, which lacks exon 8 of the genomic RAGE gene and contains an early stop codon in exon 10 due to a frame shift mutation. Δ 8 -RAGE mRNA was found in human primary astrocytes and peripheral blood mononuclear cells (PBMCs). Transient transfection experiments demonstrated that Δ 8 -RAGE mRNA was translated into a secretory protein as deduced. Moreover, two different segments of the spliced variant were identified in PBMCs by RT-PCR. The findings of this study suggest that the diverse splicing variants of RAGE are possible in many tissues and their products may influence the RAGE-mediated pathogenesis and immune modulation.
/lp/elsevier/expression-of-a-novel-secreted-splice-variant-of-the-receptor-for-qiO01iqcPT