Journal: Frontiers in Immunology
Article Title: Mapping autoantibody targets of full-length C-reactive protein in systemic lupus erythematosus: importance for neutrophil function and classical complement activation
doi: 10.3389/fimmu.2025.1578372
Figure Lengend Snippet: Heatmap representation of autoreactivity against CRP obtained with microarray-based linear epitope mapping of the full CRP monomer. (A, B) Individual signal intensity of IgG autoantibody reactivity against full-length CRP for subjects with SLE ( n =42) and HBD ( n =11). (C–E) Mean signal intensity of IgG autoantibody reactivity against motifs of full-length CRP comparing anti-CRP negative (anti-CRP–; n =16) vs. anti-CRP positive (anti-CRP+; n =26) patients with SLE, patients with ( n =6) and without ( n =36) active disease, and no damage ( n =20) vs. irreversible organ damage (any organ system; n =22). Each column represents one subject (A, B) or the mean value of a group (C–E) . Each row represents a 15 amino acid long sequence covering the full length of the protein with 14 amino acids overlap and 7 amino acid GS repeats elongated before and after the protein sequence. (CRP, C-reactive protein; HBD, healthy blood donors; SDI, Systemic Lupus International Collaborating Clinics/American College of Rheumatology damage index; SLE, systemic lupus erythematosus; SLEDAI-2K, SLE Disease Activity Index 2000).
Article Snippet: The full sequence of the CRP monomer was printed in 15 a.a sequences with 14 a.a overlap using PEPperCHIP Custom Peptide Microarray (PEPperPRINT ® GmbH, Heidelberg, Germany).
Techniques: Microarray, Sequencing, Activity Assay