Tool finds existing meds that could fight future pandemics

"Drug repurposing strategies provide an attractive and effective approach for quickly targeting potential new interventions," says Bud Mishra. (Credit: Getty Images)

An algorithmic tool that can identify existing drugs in order to combat future pandemics offers the possibility of responding more quickly to public-health crises.

“There is no silver bullet to defeat the COVID pandemic as it takes us over a public-health roller-coaster of deaths and devastation,” says Naomi Maria, an immunologist and visiting scientist at New York University’s Courant Institute of Mathematical Sciences, and lead author of a new study in the journal Cell Press.

“However, using this AI tool, coupled with in vitro data and other resources, we’ve been able to model the SARS-CoV-2 infection and identify several COVID-19 drugs currently available as potentially effective in battling the next outbreak.”

“Drug repurposing strategies provide an attractive and effective approach for quickly targeting potential new interventions,” says senior author Bud Mishra, a professor at Courant. “Identifying and selecting ahead of time the best candidates, prior to costly and laborious in vitro and in vivo experiments and ensuing clinical trials, could significantly improve disease-specific drug development.”

COVID-19 has shown to be a daunting challenge over the past three years, even though vaccines and hygienic practices have, over time, lessened its severity.

However, despite these tools to combat it, SARS-CoV-2—the virus that causes COVID-19—continues to spread and take lives. This is due, in part, to its ability to rapidly diversify in its target cell-types, immune-response pathways, and modes of transmission.

These traits make traditional approaches to vaccine and drug design less effective than in the past—and especially when the virus co-infects with other pathogens, such as RSV and influenza.

Recognizing that current methods leave us chasing the virus, the researchers came up with an approach aimed at closing the gap in future pandemics: repurposing existing drugs to fight back.

To do so, they developed a systems biology tool, the PHENotype SIMulator (PHENSIM). PHENSIM simulates tissue-specific infection of host cells of SARS-CoV-2 and then performs, through a series of computer—or in silico—experiments to identify drugs that would be candidates for repurposing.

The algorithm computes, taking into account selected cells, cell lines, and tissues and under an array of contexts, by propagating the effects and alterations of biomolecules—such as differentially expressed genes, proteins, and microRNAs—and then calculates antiviral effects.

The team confirmed the validity of the tool by comparing its results with recently published in vitro studies, demonstrating PHENSIM’s potential power in aiding effective drug repurposing.

The researchers are part of RxCovea—a multi-disciplinary group of immunologists, biologists, chemists, data scientists, game theorists, geneticists, mathematicians, and physicians, among others, that seeks to develop innovative strategies to address COVID-19.

Additional coauthors are from Feinstein Institutes for Medical Research at Northwell Health in New York, the Red Cross Blood Bank Foundation Curaçao, the Curaçao Biomedical Health and Research Institute, the Netherlands’ University Medical Center Groningen, and Catania University’s clinical and experimental medicine department in Sicily.

Support for the research came, in part, from the Netherlands-Caribbean Foundation for Clinical Higher Education (NASKHO).

Source: NYU