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Deprecated: Implicit conversion from float 235.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Emerg+Microbes+Infect 2020 ; 9 (1): 2663-2672 Nephropedia Template TP
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Human coronavirus dependency on host heat shock protein 90 reveals an antiviral target #MMPMID33179566
Li C; Chu H; Liu X; Chiu MC; Zhao X; Wang D; Wei Y; Hou Y; Shuai H; Cai J; Chan JF; Zhou J; Yuen KY
Emerg Microbes Infect 2020[Dec]; 9 (1): 2663-2672 PMID33179566show ga
Rapid accumulation of viral proteins in host cells render viruses highly dependent on cellular chaperones including heat shock protein 90 (Hsp90). Three highly pathogenic human coronaviruses, including MERS-CoV, SARS-CoV and SARS-CoV-2, have emerged in the past 2 decades. However, there is no approved antiviral agent against these coronaviruses. We inspected the role of Hsp90 for coronavirus propagation. First, an Hsp90 inhibitor, 17-AAG, significantly suppressed MERS-CoV propagation in cell lines and physiological-relevant human intestinal organoids. Second, siRNA depletion of Hsp90beta, but not Hsp90alpha, significantly restricted MERS-CoV replication and abolished virus spread. Third, Hsp90beta interaction with MERS-CoV nucleoprotein (NP) was revealed in a co-immunoprecipitation assay. Hsp90beta is required to maintain NP stability. Fourth, 17-AAG substantially inhibited the propagation of SARS-CoV and SARS-CoV-2. Collectively, Hsp90 is a host dependency factor for human coronavirus MERS-CoV, SARS-CoV and SARS-COV-2. Hsp90 inhibitors can be repurposed as a potent and broad-spectrum antiviral against human coronaviruses.