tetano
Editor, Senior Moderator
Biol Pharm Bull
. 2023 Oct 21.
doi: 10.1248/bpb.b23-00568. Online ahead of print. Removal of soluble ACE2 in VeroE6 cells by 17β-estradiol reduces SARS-CoV-2 infectivity
Yuta Kyosei[SUP] 1 [/SUP], Teruki Yoshimura[SUP] 2 [/SUP], Etsuro Ito[SUP] 1 3 [/SUP]
Affiliations
Women are less susceptible than men to coronavirus disease 2019 (COVID-19), which might be due to the female steroid hormone 17β-estradiol. We hypothesized that 17β-estradiol removes the soluble portion of angiotensin-converting enzyme 2 (sACE2) to which SARS-CoV-2 binds in host cells and that sACE2 then binds to the virus, thereby reducing the infectivity. In the present study, VeroE6/TMPRSS2 cells were infected with pseudo SARS-CoV-2 viruses and used as our model system. This infectivity was reduced by the application of 17β-estradiol. After applying 17β-estradiol to the VeroE6/TMPRSS2 cells, we used a sandwich enzyme-linked immunosorbent assay to measure the sACE2 concentration in the culture medium. Our findings revealed that 17β-estradiol removes sACE2 from VeroE6/TMPRSS2 cells. Furthermore, the pseudo SARS-CoV-2 viruses were incubated in culture medium with ACE2 collected from 17β-estradiol-treated VeroE6/TMPRSS2 cells, and the viruses were measured with an ultrasensitive ELISA using anti-spike protein antibodies. The amount of spike proteins decreased according to the concentration of 17β-estradiol applied. These results clearly demonstrated that the soluble portion of ACE2, which was removed from 17β-estradiol-treated VeroE6/TMPRSS2 cells, bound to the spike proteins of SARS-CoV-2, thereby reducing COVID-19 infectivity.
Keywords: 17β-estradiol; COVID-19; SARS-CoV-2; angiotensin-converting enzyme 2; sex difference.
. 2023 Oct 21.
doi: 10.1248/bpb.b23-00568. Online ahead of print. Removal of soluble ACE2 in VeroE6 cells by 17β-estradiol reduces SARS-CoV-2 infectivity
Yuta Kyosei[SUP] 1 [/SUP], Teruki Yoshimura[SUP] 2 [/SUP], Etsuro Ito[SUP] 1 3 [/SUP]
Affiliations
- PMID: 37866890
- DOI: 10.1248/bpb.b23-00568
Women are less susceptible than men to coronavirus disease 2019 (COVID-19), which might be due to the female steroid hormone 17β-estradiol. We hypothesized that 17β-estradiol removes the soluble portion of angiotensin-converting enzyme 2 (sACE2) to which SARS-CoV-2 binds in host cells and that sACE2 then binds to the virus, thereby reducing the infectivity. In the present study, VeroE6/TMPRSS2 cells were infected with pseudo SARS-CoV-2 viruses and used as our model system. This infectivity was reduced by the application of 17β-estradiol. After applying 17β-estradiol to the VeroE6/TMPRSS2 cells, we used a sandwich enzyme-linked immunosorbent assay to measure the sACE2 concentration in the culture medium. Our findings revealed that 17β-estradiol removes sACE2 from VeroE6/TMPRSS2 cells. Furthermore, the pseudo SARS-CoV-2 viruses were incubated in culture medium with ACE2 collected from 17β-estradiol-treated VeroE6/TMPRSS2 cells, and the viruses were measured with an ultrasensitive ELISA using anti-spike protein antibodies. The amount of spike proteins decreased according to the concentration of 17β-estradiol applied. These results clearly demonstrated that the soluble portion of ACE2, which was removed from 17β-estradiol-treated VeroE6/TMPRSS2 cells, bound to the spike proteins of SARS-CoV-2, thereby reducing COVID-19 infectivity.
Keywords: 17β-estradiol; COVID-19; SARS-CoV-2; angiotensin-converting enzyme 2; sex difference.