id author title date pages extension mime words sentences flesch summary cache txt cord-274528-mr81o9cu Li, Fei Distinct mechanisms for TMPRSS2 expression explain organ-specific inhibition of SARS-CoV-2 infection by enzalutamide 2020-09-12 .txt text/plain 6428 416 53 Among these drugs, a relatively new antiandrogen agent, enzalutamide, was proposed because it reduces the expression of transmembrane serine protease 2 (TMPRSS2), a key component mediating SARS-CoV-2-driven entry into host cells, in prostate cancer cells. Here, we evaluated the antiviral efficacy of enzalutamide in prostate cancer cells, lung cancer cells, human lung organoids and SARS-CoV-2-infected Ad-ACE2-transduced Tmprss2 knockout (Tmprss2-KO) and wild-type (WT) mice. Although Tmprss2 knockout effectively blocked SARS-CoV-2 infection in ACE2-transduced mice, enzalutamide showed no antiviral activity due to the AR independence of TMPRSS2 expression in mouse and human lung epithelial cells. Notably, in addition to prostate, other essential 40 organs, including lung, kidney and liver, which are permissive for SARS-CoV-2 infection in human, were 41 characterized with Tmprss2-postive epithelial cells ( Fig. 1b and Extended Data Fig. 1c ). Consistently, 25 enzalutamide significantly decreased TMPRSS2 expression and inhibited SARS-CoV-2 infection in human 26 prostate cancer cells (Fig. 2) . ./cache/cord-274528-mr81o9cu.txt ./txt/cord-274528-mr81o9cu.txt