The Architecture of the IgG Anti-carbohydrate Repertoire in Primary Antibody Deficiencies
Overview
Authors
Affiliations
Immune system failure in primary antibody deficiencies (PADs) has been linked to recurrent infections, autoimmunity, and cancer, yet clinical judgment is often based on the reactivity to a restricted panel of antigens. Previously, we demonstrated that the human repertoire of carbohydrate-specific immunoglobulin G (IgG) exhibits modular organization related to glycan epitope structure. The current study compares the glycan-specific IgG repertoires between different PAD entities. Distinct repertoire profiles with extensive qualitative glycan-recognition defects were observed, which are characterized by the common loss of Galα and GalNAc reactivity and disease-specific recognition of microbial antigens, self-antigens, and tumor-associated carbohydrate antigens. Antibody repertoire analysis may provide a useful tool to elucidate the degree and the clinical implications of immune system failure in individual patients.
Sarrigeorgiou I, Tsinti G, Kalala F, Germenis A, Speletas M, Lymberi P J Clin Immunol. 2024; 45(1):13.
PMID: 39305354 PMC: 11416378. DOI: 10.1007/s10875-024-01805-7.
Serum antibody screening using glycan arrays.
Marglous S, Brown C, Padler-Karavani V, Cummings R, Gildersleeve J Chem Soc Rev. 2024; 53(5):2603-2642.
PMID: 38305761 PMC: 7616341. DOI: 10.1039/d3cs00693j.
Reusable glycan microarrays using a microwave assisted wet-erase (MAWE) process.
Mehta A, Tilton C, Muerner L, von Gunten S, Heimburg-Molinaro J, Cummings R Glycobiology. 2023; 34(2).
PMID: 37962922 PMC: 10969520. DOI: 10.1093/glycob/cwad091.
Antibody diversity in IVIG: Therapeutic opportunities for novel immunotherapeutic drugs.
von Gunten S, Schneider C, Imamovic L, Gorochov G Front Immunol. 2023; 14:1166821.
PMID: 37063852 PMC: 10090664. DOI: 10.3389/fimmu.2023.1166821.
Prognostic value of PD-L1 and Siglec-15 expression in patients with nasopharyngeal carcinoma.
Zhao J, Yang H, Hu H, Liu C, Wei M, Zhao Y Sci Rep. 2022; 12(1):10401.
PMID: 35729260 PMC: 9213533. DOI: 10.1038/s41598-022-13997-2.