Open-source AI predicts key peptide traits before costly lab testing
Penn Engineers have developed PeptiVerse, an AI-powered platform that predicts key chemical and biological properties of peptides, strings of amino acids whose medical potential has been demonstrated by the success of GLP-1 ...
In an article published in Nature Communications, the researchers describe how they trained PeptiVerse using a wide range of data sets, allowing it to predict properties that can help determine whether a peptide is worth pursuing as a potential drug, such as the peptide's likelihood of dissolving, entering cells, avoiding toxicity and lasting long enough in the body to have an effect.
While tools for predicting such properties exist, those tools often focus on a narrower set of traits or only one kind of peptide. PeptiVerse, by contrast, brings many of those predictions together in one open-source, easily accessible platform, allowing users to evaluate both ordinary peptides and chemically modified versions designed to work better as drugs.
"Peptide drugs have enormous potential, but binding to the right target is only one part of what makes a molecule useful," says Pranam Chatterjee, Africk-Lesley Distinguished Scholar of Innovation in Engineering and assistant professor of bioengineering (BE) and computer and information science (CIS), and senior author of the new study.
"In drug discovery, one of the worst outcomes is finding out too late that a promising molecule cannot actually become a medicine," says Chatterjee. "PeptiVerse gives researchers a way to check many of those make-or-break properties earlier, before they invest the time and resources required to synthesize and test candidate drugs."
A laptop running PeptiVerse, at left, next to machines used to synthesize peptides, center and at right. Researchers can use PeptiVerse to predict the properties of peptides before incurring the time and expense required to synthesize them. Credit: Sylvia Zhang, Penn Engineering
Members of the Chatterjee Lab—Elizabeth Mahood, at right, and Yesol Kim, at left—demonstrate how PeptiVerse, whose web client is open on the laptop, can be used by experimentalists to make predictions about peptides, which can then be synthesized by a machine like the one at right. Credit: Sylvia Zhang, Penn Engineering
Built from a wide range of data, PeptiVerse can predict multiple peptide properties, helping guide both AI generation of new peptides and choosing which peptides to synthesize in the lab. Credit: Chatterjee Lab, Penn