tetano
Editor, Senior Moderator
iScience
. 2022 Jun 15;104614.
doi: 10.1016/j.isci.2022.104614. Online ahead of print.
Intronic regulation of SARS-CoV-2 receptor (ACE2) expression mediated by immune signaling and oxidative stress pathways
Daniel Richard[SUP] 1 [/SUP], Pushpanathan Muthuirulan[SUP] 1 [/SUP], Jennifer Aguiar[SUP] 2 [/SUP], Andrew C Doxey[SUP] 2 [/SUP], Arinjay Banerjee[SUP] 2 3 4 [/SUP], Karen Mossman[SUP] 5 [/SUP], Jeremy Hirota[SUP] 2 5 6 [/SUP], Terence D Capellini[SUP] 1 7 [/SUP]
Affiliations
Abstract
The angiotensin-converting enzyme 2 (ACE2) protein is a key catalytic regulator of the renin-angiotensin system (RAS), involved in fluid homeostasis and blood pressure modulation. ACE2 also serves as a cell-surface receptor for some coronaviruses such as SARS-CoV and SARS-CoV-2. Improved characterization of ACE2 regulation may help us understand the effects of pre-existing conditions on COVID-19 incidence, as well as pathogenic dysregulation following viral infection. Here, we perform bioinformatic analyses to hypothesize on ACE2 gene regulation in two different physiological contexts, identifying putative regulatory elements of ACE2 expression. We perform functional validation of our computational predictions via targeted CRISPR-Cas9 deletions of these elements in vitro, finding them responsive to immune signaling and oxidative-stress pathways. This contributes to our understanding of ACE2 gene regulation at baseline and immune challenge. Our work supports pursuit of these putative mechanisms in our understanding of infection/disease caused by current, and future, SARS-related viruses such as SARS-CoV-2.
. 2022 Jun 15;104614.
doi: 10.1016/j.isci.2022.104614. Online ahead of print.
Intronic regulation of SARS-CoV-2 receptor (ACE2) expression mediated by immune signaling and oxidative stress pathways
Daniel Richard[SUP] 1 [/SUP], Pushpanathan Muthuirulan[SUP] 1 [/SUP], Jennifer Aguiar[SUP] 2 [/SUP], Andrew C Doxey[SUP] 2 [/SUP], Arinjay Banerjee[SUP] 2 3 4 [/SUP], Karen Mossman[SUP] 5 [/SUP], Jeremy Hirota[SUP] 2 5 6 [/SUP], Terence D Capellini[SUP] 1 7 [/SUP]
Affiliations
- PMID: 35756893
- PMCID: PMC9213013
- DOI: 10.1016/j.isci.2022.104614
Abstract
The angiotensin-converting enzyme 2 (ACE2) protein is a key catalytic regulator of the renin-angiotensin system (RAS), involved in fluid homeostasis and blood pressure modulation. ACE2 also serves as a cell-surface receptor for some coronaviruses such as SARS-CoV and SARS-CoV-2. Improved characterization of ACE2 regulation may help us understand the effects of pre-existing conditions on COVID-19 incidence, as well as pathogenic dysregulation following viral infection. Here, we perform bioinformatic analyses to hypothesize on ACE2 gene regulation in two different physiological contexts, identifying putative regulatory elements of ACE2 expression. We perform functional validation of our computational predictions via targeted CRISPR-Cas9 deletions of these elements in vitro, finding them responsive to immune signaling and oxidative-stress pathways. This contributes to our understanding of ACE2 gene regulation at baseline and immune challenge. Our work supports pursuit of these putative mechanisms in our understanding of infection/disease caused by current, and future, SARS-related viruses such as SARS-CoV-2.