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Machine Learning and Mass Spectrometry for Structural Elucidation of Novel Toxic Chemicals

Project description

Machine learning for novel toxic chemical structures discovery

Exposure studies constitute a crucial aspect of chemical research. Approximately half a million chemicals have been identified as relevant for such studies, with significant numbers of their transformation products co-existing in the environment. Regrettably, despite this extensive array, only a few of these chemical structures can be generated in silico, analytically assessed, and validated. Current databases and machine learning models rely on these existing chemical structures. The ERC-funded LearningStructurE project seeks to revolutionise this landscape by amalgamating machine learning with novel technologies to identify new toxic chemical structures. This initiative aims to streamline the discovery process for novel chemical structures, making it more accessible, frequent, and efficient.

Objective

Nearly half a million known chemicals have been deemed relevant for exposure studies and an even larger number of their transformation products are likely to co-occur in the environment. This mind-blowing number of possible chemical structures makes it impossible to in-silico generate all these structures, let alone synthesise and analytically confirm them, thereby limiting the discovery of novel chemicals. Today, the structural elucidation of chemicals detected with high resolution mass spectrometry relies on databases and machine learning models trained on the known chemical space. Both are fundamentally ill-suited for discovering novel chemical structures. As a result, only a few percent of the toxic activity of the environmental samples is explained by the currently known and monitored chemicals. It is crucial to access the novel chemical space to improve our understanding of the origin, fate, and impact of these chemicals.

The aim of LearningStructurE is to turn the discovery of novel chemical structures from serendipity to routine. As a steppingstone in this pursuit, I will combine the fundamental understanding of chromatography and high resolution mass spectrometry with machine learning to pinpoint novel toxic chemical structures based on their empirical analytical information. To significantly advance the predictive power of machine learning models for empirical analytical information, I will take advantage of the candidate structures as a sample specific training set for machine learning models. The improved predictive power will feed into in-silico structure generation, allowing to elucidate the structure directly from the empirical analytical information.

LearningStructurE will pave the way for exploration of the unknown chemical space detected from environmental samples, and thereby improve our understanding of the emissions, chemical processes transforming the emitted chemicals, and close the gap in measured and explained toxicity.

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Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

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HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) ERC-2023-COG

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Host institution

STOCKHOLMS UNIVERSITET
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 1 867 187,00
Address
UNIVERSITETSVAGEN 10
10691 Stockholm
Sweden

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Region
Östra Sverige Stockholm Stockholms län
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 1 867 187,00

Beneficiaries (1)

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