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Table 1 Results of inhibition profiling of HIV protease inhibitors against SARS-CoV-2 Mpro in cell culture. Data are calculated from triplicate experiments. IC50 for lopinavir was indeterminable accurately due to high cytotoxic effects in HEK-293 T cells

From: Analysis of the efficacy of HIV protease inhibitors against SARS-CoV-2′s main protease

Inhibitor

IC50 (µM)

Standard error

Lopinavir + Ritonavir

10.9

 ± 1.1

Ritonavir

13.7

 ± 1.1

Saquinavir

31.4

 ± 1.2

Darunavir

36.1

 ± 1.2

Atazanavir

60.7

 ± 2.5

Lopinavir

Indeterminable

Indinavir

No inhibition (up to 200 µM)

Nelfinavir

No inhibition (up to 200 µM)

Tipranavir

No inhibition (up to 200 µM)