RT Journal Article SR Electronic T1 Unravelling the debate on heme effects in COVID-19 infections JF bioRxiv FD Cold Spring Harbor Laboratory SP 2020.06.09.142125 DO 10.1101/2020.06.09.142125 A1 Marie-Thérèse Hopp A1 Daniel Domingo-Fernández A1 Yojana Gadiya A1 Milena S. Detzel A1 Benjamin F. Schmalohr A1 Francèl Steinbock A1 Diana Imhof A1 Martin Hofmann-Apitius YR 2020 UL http://biorxiv.org/content/early/2020/06/12/2020.06.09.142125.abstract AB The SARS-CoV-2 outbreak was recently declared a worldwide pandemic. Infection triggers the respiratory tract disease COVID-19, which is accompanied by serious changes of clinical biomarkers such as hemoglobin and interleukins. The same parameters are altered during hemolysis, which is characterized by an increase in labile heme. We present two approaches that aim at analyzing a potential link between available heme and COVID-19 pathogenesis. Four COVID-19 related proteins, i.e. the host cell proteins ACE2 and TMPRSS2 as well as the viral protein 7a and S protein, were identified as potential heme binders. We also performed a detailed analysis of the common pathways induced by heme and SARS-CoV-2 by superimposition of knowledge graphs covering heme biology and COVID-19 pathophysiology. Herein, focus was laid on inflammatory pathways, and distinct biomarkers as the linking elements. Finally, the results substantially improve our understanding of COVID-19 infections and disease progression of patients with different clinical backgrounds and expand the diagnostic and treatment options.Competing Interest StatementThe authors have declared no competing interest.