The drug aprotinin inhibits entry of SARS-CoV2 in host cells

The surface of the SARS-CoV-2 virus is studded with spike proteins. The virus needs these in order to dock onto proteins (ACE2 receptors) on the surface of the host cell. Before this docking is possible, parts of the spike protein have to be cleaved by the host cell's enzymes - proteases.

In cell culture experiments with various cell types, the international scientific team led by Professor Jindrich Cinatl, Institute for Medical Virology at the University Hospital Frankfurt, Professor Martin Michaelis, and Dr Mark Wass (both University of Kent) demonstrated that the protease inhibitor aprotinin can inhibit virus replication by preventing SARS-CoV2 entry into host cells. Moreover, aprotinin appears to compensate for a SARS-CoV2-induced reduction of endogenous protease inhibitors in virus-infected cells.

Influenza viruses require host cell proteases for cell entry in a similar way as coronaviruses. Hence, an aprotinin aerosol is already approved in Russia for the treatment of influenza.

Professor Jindrich Cinatl said: "Our findings show that aprotinin is effective against SARS-CoV2 in concentrations that can be achieved in patients. In aprotinin we have a drug candidate for the treatment of COVID-19 that is already approved for other indications and could readily be tested in patients."

Denisa Bojkova, Marco Bechtel, Katie-May McLaughlin, Jake E. McGreig, Kevin Klann, Carla Bellinghausen, Gernot Rohde, Danny Jonigk, Peter Braubach, Sandra Ciesek, Christian M√ľnch, Mark N. Wass, Martin Michaelis, Jindrich Cinatl jr.
Aprotinin inhibits SARS-CoV-2 replication.
Cells, 2020. doi: 10.3390/cells9112377

Most Popular Now

Johnson & Johnson announces advance purchase a…

Janssen Pharmaceutica NV, one of the Janssen Pharmaceutical Companies of Johnson & Johnson (NYSE: JNJ) (the Company), has entered into an agreement with the African Vacci...

Pfizer-BioNTech announce positive topline results …

Pfizer Inc. (NYSE: PFE) and BioNTech SE (Nasdaq: BNTX) today announced that, in a Phase 3 trial in adolescents 12 to 15 years of age with or without prior evidence of SAR...

GSK to support manufacture of Novavax' COVID-19 va…

GSK has reached an agreement in principle with Novavax and the UK Government Vaccines Taskforce to support manufacturing of up to 60 million doses of Novavax' COVID-19 va...

Pfizer and BioNTech confirm high efficacy and no s…

Pfizer Inc. (NYSE: PFE) and BioNTech SE (Nasdaq: BNTX) announced updated topline results from analysis of 927 confirmed symptomatic cases of COVID-19 observed in their pi...

BioNTech provides update on vaccine production sta…

BioNTech SE today announced that the European Medicines Agency (EMA) approved the manufacturing of the COVID-19 vaccine drug product at the facility in Marburg. As part o...

COVID-19 convalescent plasma with greater antibody…

Convalescent plasma, the use of survivors' antibodies transfused into sick COVID-19 patients is safe and significantly improves clinical outcomes when using high levels o...

Undetected coronavirus variant was in at least 15 …

A highly contagious SARS-CoV-2 variant was unknowingly spreading for months in the United States by October 2020, according to a new study from researchers with The Unive...

New phase III data shows investigational antibody …

Roche (SIX: RO, ROG; OTCQX: RHHBY) confirmed positive topline results from the largest trial to date assessing a COVID-19 treatment in infected non-hospitalised patients ...

Valneva reports positive Phase 1/2 data for its in…

Valneva SE, a specialty vaccine company focused on the development and commercialization of prophylactic vaccines for infectious diseases with significant unmet medical n...

Prioritizing who gets vaccinated for COVID-19 save…

Waiting for your turn can be frustrating, especially when it comes to COVID-19 vaccinations. But prioritizing who receives the limited supply of vaccines available saves ...

Clinical trial completion rates decline during COV…

Social distancing and lockdowns may have reduced the spread of COVID-19, but researchers from Penn State College of Medicine also report those actions may have affected c...

Study identifies possible COVID-19 drugs - includi…

A team led by scientists in the Perelman School of Medicine at the University of Pennsylvania has identified nine potential new COVID-19 treatments, including three that ...