Bold Therapeutics ongoing collaboration with other top Canadian virologists demonstrate a Ru-based cancer drug (BOLD-100) beats "Remdesivir" in a head-to-head assay against Covid-19. These results further highlight the potential of Ru-based compounds against Covid, & why TLT should seriously pursue clinical development with Dr.. Coombs' research team....& my guess is we may very well have the superior compound, especially when combined with PDT (I.e. via upper airway/nasopharyngeal-based PDT/x-ray, etc.). Who knows, ruthenium could be the new gold in 10 years. Exciting times..
[VANCOUVER, BC, Aug. 17, 2020 /PRNewswire/ -- Bold Therapeutics, a clinical-stage biopharmaceutical company, recently generated additional data supporting rapid clinical development of BOLD-100 as a novel antiviral. In a series of experiments conducted by Dr. Stephen Barr, Associate Professor in the Department of Microbiology and Immunology at Western University, both BOLD-100 and remdesivir were tested head-to-head in a cytopathic effect assay against a live Wuhan strain of SARS-CoV-2 (COVID-19) in Vero E6 cells. Consistent with prior experiments, BOLD-100 showed low nanomolar IC50 values, a magnitude lower (1/10th) than the IC50 values of Gilead's remdesivir, the only currently approved therapeutic for COVID-19. This data clearly demonstrates that BOLD-100 is a highly potent antiviral agent.
BOLD-100 is a first-in-class ruthenium-based small molecule drug which selectively inhibits stress-induced upregulation of the chaperone protein GRP78. In cancer, GRP78 plays a critical role in resistance, survival and proliferation, whereas in viral infections, GRP78 plays a critical role in host recognition, viral entry and viral replication. There are now more than two hundred independent academic articles highlighting the critical role that GRP78 plays in viral infections (e.g. Ha DP, Van Krieken R, Carlos AJ, Lee AS. The stress-inducible molecular chaperone GRP78 as potential therapeutic target for coronavirus infection. J Infect. 2020 Sep;81(3):452–82.).
Bold Therapeutics' ongoing collaboration with some of the top virologists in Canada continues to produce independent data supporting BOLD-100 as a novel antiviral," stated Mark Bazett, Bold Therapeutics' Director of Preclinical Development. Dr. Bazett continued, "Today's data is particularly impressive, showing that BOLD-100 is substantially more potent as an antiviral than remdesivir, the only recently Health Canada approved treatment for COVID-19. The collective evidence on BOLD-100 supports further, rapid development of this novel treatment option to support patients with COVID-19."
While much attention has been given to vaccine development, it is a challenging and high-risk endeavor. And even if an effective vaccine is successfully developed and subsequently manufactured, effective therapeutics for infected patients unable or unwilling to take vaccines will still be needed. BOLD-100 has the potential to substantially reduce severity of infection, shortening hospital stays and reducing morbidity and mortality – but this can only be definitively determined through clinical testing. Perhaps most importantly, BOLD-100 could be effective against not just the current pandemic, but also future viral pandemics – whereas COVID-19 vaccines would necessarily be ineffective. Bold Therapeutics has already manufactured more than sufficient drug product to support immediate clinical studies in COVID-19 due to an ongoing Phase 1/2 trial of BOLD-100 in combination with FOLFOX (chemotherapeutic cocktail) in the treatment of advanced GI cancers, with an open IND with the U.S. FDA and a February 2020 NOL from Health Canada. In an earlier Phase 1 dose-escalation study of 46 patients with advanced cancer, BOLD-100 was safe and well-tolerated, potentially allowing BOLD-100 to move immediately into Phase 2 trials in COVID-19. These factors allow BOLD-100 to be developed and potentially approved as an anti-COVID-19 therapeutic in a relevant timeframe, rather than years from now."
Bold Therapeutics continues to actively seek investors and/or development partners that are interested in COVID-19.]
Interesting proposition...