De Novo Design of Bioactive Small Molecules by Artificial Intelligence
Open accessAbstract
Generative artificial intelligence offers a fresh view on molecular design. We present the first-time prospective application of a deep learning model for designing new druglike compounds with desired activities. For this purpose, we trained a recurrent neural network to capture the constitution of a large set of known bioactive compounds represented as SMILES strings. By transfer learning, this general model was fine-tuned on recognizing retinoid X and peroxisome proliferator-activated receptor agonists. We synthesized five top-ranking compounds designed by the generative model. Four of the compounds revealed nanomolar to low-micromolar receptor modulatory activity in cell-based assays. Apparently, the computational model intrinsically captured relevant chemical and biological knowledge without the need for explicit rules. The results of this study advocate generative artificial intelligence for prospective de novo molecular design, and demonstrate the potential of these methods for future medicinal chemistry.
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Merk et al. trained a recurrent neural network to capture bioactive compounds such as SMILES strings; identified compounds were synthesized and demonstrated potent receptor modulatory activity in in vitro assays.
“Merk et al. trained a recurrent neural network to capture a large number of bioactive compounds such as SMILES strings. This model was then fine-tuned to recognize retinoid X and peroxisome proliferator-activated receptor agonists. The identified compounds were synthesized and demonstrated potent receptor modulatory activity in in vitro assays [23].”
From The rise of artificial intelligence in healthcare applications (2020) · cites this paper as [23]
DNNs provide the possibility of inverting the QSAR model (inverse QSAR).
“They provide the possibility of inverting the QSAR model (inverse QSAR), i.e. designing molecules directly from the model (so called generative models).73”
From QSAR without borders (2020) · cites this paper as [73]
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- Authors
- Merk, D., Friedrich, L., Grisoni, F., & Schneider, G.
- Affiliations
- ETH Zurich (CH)
- Corresponding author
- Schneider, Gisbert
- Venue
- Molecular Informatics
- Publisher
- Wiley
- Published
- 2018-01
- Volume
- 37
- Issue
- 1-2
- ISSN
- 1868-1743 (ISSN-L)
- 1868-1751
- PMC
- PMC5838524
- OpenAlex
- W2784270883
- Cited by
- 373
- References
- 19
- Citations by year
- 2026: 28 · 2025: 39 · 2024: 51 · 2023: 57 · 2022: 40 · 2021: 61 · 2020: 43 · 2019: 34 · 2018: 19
- FWCI
- 29.73
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Molecular Informatics (publishedVersion, cc-by-nc)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- BOA (University of Milano-Bicocca) (submittedVersion)
- Repository for Publications and Research Data (ETH Zurich) (submittedVersion, cc-by-nc)
- ETH Zürich Research Collection
- Funders
- National Science Foundation
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (177477)
- Eidgenössische Technische Hochschule Zürich (16-2 FEL-07)
- Topics
- Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
- Physical Sciences › Materials Science › Materials Chemistry › Machine Learning in Materials Science
- Physical Sciences › Chemistry › Organic Chemistry › Synthesis and Characterization of Heterocyclic Compounds
- Keywords
- de novo molecular design, generative AI, deep learning, recurrent neural networks, SMILES, transfer learning, retinoid X receptor agonist, peroxisome proliferator-activated receptor agonists, drug-like molecules, bioactive compounds, receptor modulation, compound synthesis
- MeSH terms
- Deep Learning, Humans, Drug Design, Quantitative Structure-Activity Relationship, Retinoid X Receptors, Peroxisome Proliferator-Activated Receptors, Small Molecule Libraries, HEK293 Cells, Molecular Docking Simulation
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