Researchers at the forefront of developing machine learning methods for chemical discovery

Prof. Alexandre Tkatchenko and his research team at the University of Luxembourg have been awarded grants totalling 500,000 euros to conduct research in the emerging field of machine learning methods for chemical discoveries.

The discovery and formulation of new drugs, antivirals, antibiotics and in general chemicals with tailored properties is a long and painstaking process. Interdisciplinary research at the crossroads of biochemistry, physics and computer science can change this. The development of machine learning (ML) methods, combined with first principles of quantum and statistical mechanics and trained on increasingly available molecular big datasets, has the potential to revolutionise the process of chemical discovery.

“Chemical discovery and machine learning are bound to evolve together, but achieving true synergy between them requires solving many outstanding challenges,” says Alexandre Tkatchenko, Professor of Theoretical Chemical Physics at the University.

Machine learning to help identify drug candidates

The University initiated a collaboration with Belgian company Janssen Pharmaceuticals in spring 2020 to develop novel ML methods for identifying compounds that have a strong therapeutic potential (also called drug candidates). So far, ML approaches have been developed for small molecules. This research project aims to extend the architecture and transferability of quantum mechanics-based machine learning approaches to large molecules of pharmaceutical importance.

“The generation of novel chemicals with activity on relevant biological targets is the core business of pharmaceutical companies. Machine learning approaches have the potential to speed up the process and reduce failure rates in drug discovery. Having been approached by a leading pharmaceutical company to work together in identifying drug candidates is a gratifying sign of the industrial recognition of our expertise,” comments Dr. Leonardo Medrano-Sandonas, a postdoctoral researcher in Prof. Tkatchenko’s group.

Partner in an Innovative Training Network funded by the European Commission

Together with three large European pharma companies (Bayer, AstraZeneca, Janssen), the chemical company Enamine and ten academic partners with expertise in computational drug design, Prof. Tkatchenko has been granted the Marie Skłodowska-Curie Actions - Innovative Training Network grant for the project Advanced machine learning for Innovative Drug Discovery (AIDD) for the period 2021 - 2023. This project aims to develop innovative ML methods to contribute to an integrated “One Chemistry” model that can predict outcomes ranging from molecule generation to synthesis and understand how to intertwine chemistry and biology to develop new drugs.

Here scientific expertise joins forces with medicinal and synthetic chemistry expertise of the industrial partners, and benefits from large valuable datasets. For the first time, all methodological developments will be available open source. The training network will prepare a generation of scientists who have skills both in machine learning and chemistry to advance medicinal chemistry.

“Making accurate predictions using machine learning critically depends on access to large collections of high-quality data and domain expertise to analyse them,” explains Prof. Tkatchenko. “Putting our forces together is a first step towards chemical discovery revolution driven by machine learning”.

The field of machine learning for chemical discovery is emerging and substantial advances are expected to happen in the near future. Prof. Tkatchenko has recently published an article in the journal Nature Communications in which he discusses recent breakthroughs in this field and highlights the challenges for the years to come.