MONOCLONAL ANTIBODY THERAPY |
S230.15 mAbs m396 mAbs |
RBD–ACE2 interaction |
Tested in mice against SARS virus (strains Urbani, rGD03, or rSZ16). |
(125) |
MERS-4 MERS-27 |
RBD–DPP4 interaction |
Blocks receptor–ligand interaction at the cell surface and prevents syncytia formation. |
(126) |
Tocilizumab |
IL-6 receptor |
Obstructs IL-6-mediated signal transduction. |
(127) |
Infliximab |
TNF |
Blocks soluble tumor necrosis factor and signal transduction, which helps maintain remission of COVID-19. |
(128) |
Adalimumab |
|
|
|
Lenzilumab |
GM-CSF |
Neutralization antibody for GM-CSF that is essential for chronic and acute inflammation in COVID-19. |
(129) |
Gimsilumab |
|
|
(130) |
Interferons |
IFNß-1b |
Enhances ISG expression via JAK/STAT signaling. Hinders virus multiplication and shedding. |
(131) |
|
IFN- λ |
|
(132) |
SMALL-MOLECULE ANTIVIRAL DRUGS |
Aurine tricarboxylic acid |
Viral RNA polymerase |
Binds to viral polymerase, and tested against SARS virus in in-vitro culture. |
(133) |
Rupintrivir |
Viral proteases |
Protease inhibitor: inactivates 3CLpro and PLpro. |
(134) |
Benzopurpurin B |
NSP15 endo-ribonuclease |
Reduces viral infectivity of SARS virus in cell culture by inhibiting NSP15. |
(135) |
C-21 |
Angiotensin AT2 receptor |
AT2 receptor agonist that may improve the viral damage to the lungs. |
(134) |
β-D-N4-hydroxycytidine (NHC) |
Viral RNA polymerase |
Inhibits replication of multiple coronaviruses. Can be used orally. |
(136) |
REPURPOSED FDA-APPROVED DRUGS |
Baricitinib |
JAK kinase |
Interferes with inflammatory signaling involving Janus kinase. |
(137) |
Lopinavir |
Viral protease |
Involved in immature, noninfectious HIV virus particle, and inhibits PLpro or 3CLpro in SARS-CoV-2. |
(138) |
Ritonavir |
CYP3a (target unknown for coronavirus) |
HIV protease inhibitor. No positive response in combination with lopinavir. |
(139) |
Favilavir |
Viral RNA polymerase |
Purine analog blocking viral RNA synthesis. |
(140) |
Remdesivir |
|
|
(141) |
Ribavirin |
|
Guanosine nucleoside binds to nucleoside binding pocket of the enzyme. |
(133, 140, 142) |
Galidesivir |
|
Adenosine analog, effective against Ebola, Zika, and other RNA viruses. |
(143) |
Chloroquine/hydroxychloroquine |
Heme polymerase and ACE2 |
Increases endosomal pH and terminal glycosylation of ACE2, inhibiting SARS-CoV-2 entry. |
(144, 145) |
Nitazoxanide |
Glutathione-S-transferase |
Alters pH and inhibits viral maturation. Reported against TB, helminthic, and protozoan infection. |
(140) |
Umifenovir/arbidol |
N/A |
Interacts with aromatic residues of viral glycoproteins. Is being trialed for prophylactic action against COVID-19. |
(146) |