PMID- 32558308 OWN - NLM STAT- MEDLINE DCOM- 20200826 LR - 20240329 IS - 2324-9269 (Electronic) IS - 2324-9269 (Linking) VI - 8 IP - 8 DP - 2020 Aug TI - Genetic variability of human angiotensin-converting enzyme 2 (hACE2) among various ethnic populations. PG - e1344 LID - 10.1002/mgg3.1344 [doi] LID - e1344 AB - BACKGROUND: There appears to be large regional variation for susceptibility, severity, and mortality for COVID-19 infections. Numerous potential factors could explain the wide variability in the number of infections and death among the countries. We examined genetic differences in the human angiotensin-converting enzyme 2 (hACE2) gene, as its receptor serves as a cellular entry for SARS-CoV-2. At present, there is a paucity of data regarding the differences for ACE2 polymorphisms and expression levels between ethnicities. METHODS: We compared the allele frequency of mutations between European and East Asians. Molecular dynamic simulation were performed to investigate the influences of significant mutant on protein structure. The binding free energies were calculated between S protein and hACE2. We also examined hACE2 gene expression in eight global populations from HapMap3. RESULTS: Four missense mutations showed significant minor allele frequency difference between Asians and Caucasians. Molecular dynamic demonstrated that two of these variants (K26R and I468V) may affect binding characteristics between S protein of the virus and hACE2 receptor. We also noted marginal differences in gene expression for some populations in HapMap3 as compared to the Chinese population. CONCLUSION: Our studies reveal subtle changes in the genetics of hACE2 between human populations, but the magnitude of the difference was small and the significance is not clear in the absence of further in vitro and functional studies. CI - (c) 2020 The Authors. Molecular Genetics & Genomic Medicine published by Wiley Periodicals LLC. FAU - Li, Quan AU - Li Q AD - Department of Medicine, Faculty of Medicine, Memorial University, St. John's, NL, Canada. AD - Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada. FAU - Cao, Zanxia AU - Cao Z AD - Shandong Provincial Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou, China. FAU - Rahman, Proton AU - Rahman P AUID- ORCID: 0000-0002-4521-2029 AD - Department of Medicine, Faculty of Medicine, Memorial University, St. John's, NL, Canada. LA - eng GR - 781-19095-209843/Atlantic Canada Opportunities Agency/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200618 PL - United States TA - Mol Genet Genomic Med JT - Molecular genetics & genomic medicine JID - 101603758 RN - 0 (Spike Glycoprotein, Coronavirus) RN - 0 (spike protein, SARS-CoV-2) RN - EC 3.4.15.1 (Peptidyl-Dipeptidase A) RN - EC 3.4.17.23 (ACE2 protein, human) RN - EC 3.4.17.23 (Angiotensin-Converting Enzyme 2) SB - IM MH - Angiotensin-Converting Enzyme 2 MH - Asian People/genetics MH - Betacoronavirus/isolation & purification/metabolism MH - Binding Sites MH - COVID-19 MH - Coronavirus Infections/pathology/virology MH - Gene Frequency MH - Humans MH - Molecular Dynamics Simulation MH - Mutation, Missense MH - Pandemics MH - Peptidyl-Dipeptidase A/chemistry/*genetics/metabolism MH - Pneumonia, Viral/pathology/virology MH - *Polymorphism, Genetic MH - Protein Binding MH - Protein Structure, Tertiary MH - SARS-CoV-2 MH - Spike Glycoprotein, Coronavirus/chemistry/metabolism MH - White People/genetics PMC - PMC7323111 OTO - NOTNLM OT - COVID-19 OT - SARS-CoV-2 OT - angiotensin-converting enzyme 2 OT - ethnic variation OT - gene expression OT - molecular dynamics simulation COIS- The authors declare that they have no conflict of interest. EDAT- 2020/06/20 06:00 MHDA- 2020/08/28 06:00 PMCR- 2020/06/18 CRDT- 2020/06/20 06:00 PHST- 2020/04/15 00:00 [received] PHST- 2020/05/15 00:00 [revised] PHST- 2020/05/19 00:00 [accepted] PHST- 2020/06/20 06:00 [pubmed] PHST- 2020/08/28 06:00 [medline] PHST- 2020/06/20 06:00 [entrez] PHST- 2020/06/18 00:00 [pmc-release] AID - MGG31344 [pii] AID - 10.1002/mgg3.1344 [doi] PST - ppublish SO - Mol Genet Genomic Med. 2020 Aug;8(8):e1344. doi: 10.1002/mgg3.1344. Epub 2020 Jun 18.