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SARS-CoV-2 Spike Protein Binding of Glycated Serum Albumin-Its Potential Role in the Pathogenesis of the COVID-19 Clinical Syndromes and Bias towards Individuals with Pre-Diabetes/Type 2 Diabetes and Metabolic Diseases.

Published version
Peer-reviewed

Type

Article

Change log

Authors

Iles, Jason 
Zmuidinaite, Raminta  ORCID logo  https://orcid.org/0000-0001-7728-6623
Gardiner, Anna 
Lacey, Jonathan 

Abstract

The immune response to SARS-CoV-2 infection requires antibody recognition of the spike protein. In a study designed to examine the molecular features of anti-spike and anti-nucleocapsid antibodies, patient plasma proteins binding to pre-fusion stabilised complete spike and nucleocapsid proteins were isolated and analysed by matrix-assisted laser desorption ionisation-time of flight (MALDI-ToF) mass spectrometry. Amongst the immunoglobulins, a high affinity for human serum albumin was evident in the anti-spike preparations. Careful mass comparison revealed the preferential capture of advanced glycation end product (AGE) forms of glycated human serum albumin by the pre-fusion spike protein. The ability of bacteria and viruses to surround themselves with serum proteins is a recognised immune evasion and pathogenic process. The preference of SARS-CoV-2 for AGE forms of glycated serum albumin may in part explain the severity and pathology of acute respiratory distress and the bias towards the elderly and those with (pre)diabetic and atherosclerotic/metabolic disease.

Description

Keywords

COVID-19, convalescent plasma, glycated albumin, nucleocapsid, semi-automated magnetic rack, spike protein, Aged, Antibodies, Viral, COVID-19, Diabetes Mellitus, Type 2, Humans, Prediabetic State, SARS-CoV-2, Serum Albumin, Serum Albumin, Human, Spike Glycoprotein, Coronavirus

Journal Title

Int J Mol Sci

Conference Name

Journal ISSN

1661-6596
1422-0067

Volume Title

23

Publisher

MDPI AG