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Biochem Biophys Res Commun ; 553: 25-29, 2021 05 14.
Article in English | MEDLINE | ID: covidwho-1147359

ABSTRACT

The current COVID-19 pandemic is caused by infections with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). A sex-bias has been observed, with increased susceptibility and mortality in male compared to female patients. The gene for the SARS-CoV-2 receptor ACE2 is located on the X chromosome. We previously generated TP53 mutant pigs that exhibit a sex-specific patho-phenotype due to altered regulation of numerous X chromosome genes. In this study, we explored the effect of p53 deficiency on ACE2 expression in pigs. First, we identified the p53 binding site in the ACE2 promoter and could show its regulatory effect on ACE2 expression by luciferase assay in porcine primary kidney fibroblast cells. Later, quantitative PCR and western blot showed tissue- and gender-specific expression changes of ACE2 and its truncated isoform in p53-deficient pigs. We believe these findings will broaden the knowledge on ACE2 regulation and COVID-19 susceptibility.


Subject(s)
Angiotensin-Converting Enzyme 2/metabolism , Gene Expression Regulation , Organ Specificity , Sex Characteristics , Sus scrofa/metabolism , Tumor Suppressor Protein p53/metabolism , Angiotensin-Converting Enzyme 2/chemistry , Angiotensin-Converting Enzyme 2/genetics , Animals , Base Sequence , Binding Sites , COVID-19/metabolism , COVID-19/virology , Disease Models, Animal , Female , Fibroblasts , Gene Deletion , Male , Promoter Regions, Genetic/genetics , Tumor Suppressor Protein p53/deficiency , Tumor Suppressor Protein p53/genetics , X Chromosome/genetics
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