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Evidence of a genetically driven metabolomic signature in actively inflamed Crohn’s disease

Evidence of a genetically driven metabolomic signature in actively inflamed Crohn’s disease
Evidence of a genetically driven metabolomic signature in actively inflamed Crohn’s disease

Crohn’s disease (CD) is characterised by chronic inflammation. We aimed to identify a relationship between plasma inflammatory metabolomic signature and genomic data in CD using blood plasma metabolic profiles. Proton NMR spectroscopy were achieved for 228 paediatric CD patients. Regression (OPLS) modelling and machine learning (ML) approaches were independently applied to establish the metabolic inflammatory signature, which was correlated against gene-level pathogenicity scores generated for all patients and functional enrichment was analysed. OPLS modelling of metabolomic spectra from unfasted patients revealed distinctive shifts in plasma metabolites corresponding to regions of the spectrum assigned to N-acetyl glycoprotein, glycerol and phenylalanine that were highly correlated (R 2 = 0.62) with C-reactive protein levels. The same metabolomic signature was independently identified using ML to predict patient inflammation status. Correlation of the individual peaks comprising this metabolomic signature of inflammation with pathogenic burden across 15,854 unselected genes identified significant enrichment for genes functioning within ‘intrinsic component of membrane’ (p = 0.003) and ‘inflammatory bowel disease (IBD)’ (p = 0.003). The seven genes contributing IBD enrichment are critical regulators of pro-inflammatory signaling. Overall, a metabolomic signature of inflammation can be detected from blood plasma in CD. This signal is correlated with pathogenic mutation in pro-inflammatory immune response genes.

2045-2322
Mossotto, Enrico
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Boberska, Joanna
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Ashton, James J.
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Stafford, Imogen S.
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Cheng, Guo
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Baker, Jonathan
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Borca, Florina
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Phan, Hang T. T.
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Coelho, Tracy F.
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Beattie, R. Mark
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Claus, Sandrine P.
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Ennis, Sarah
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Mossotto, Enrico
a2a572db-3e95-41c6-94f6-f1b019594372
Boberska, Joanna
610ec894-21d9-4464-a006-cb0d5992fcdb
Ashton, James J.
1c0bfa29-794c-4fd5-93e0-6769e6037d72
Stafford, Imogen S.
50987dc1-3772-408f-9093-9124f3d6b2cd
Cheng, Guo
fdfb3e03-f185-49b1-9c53-05b93bb6c8d0
Baker, Jonathan
eeac94ac-d265-4350-a882-b6cc088eb141
Borca, Florina
31fc3965-6bcf-4fd6-85bc-8b0f99f62473
Phan, Hang T. T.
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Coelho, Tracy F.
a78b627c-ea78-41e1-9553-0390921e3c93
Beattie, R. Mark
9a66af0b-f81c-485c-b01d-519403f0038a
Claus, Sandrine P.
aff1e04c-0946-4bdf-b761-4aa39c43ce9c
Ennis, Sarah
7b57f188-9d91-4beb-b217-09856146f1e9

Mossotto, Enrico, Boberska, Joanna, Ashton, James J., Stafford, Imogen S., Cheng, Guo, Baker, Jonathan, Borca, Florina, Phan, Hang T. T., Coelho, Tracy F., Beattie, R. Mark, Claus, Sandrine P. and Ennis, Sarah (2022) Evidence of a genetically driven metabolomic signature in actively inflamed Crohn’s disease. Scientific Reports, 12 (1), [14101]. (doi:10.1038/s41598-022-18178-9).

Record type: Article

Abstract

Crohn’s disease (CD) is characterised by chronic inflammation. We aimed to identify a relationship between plasma inflammatory metabolomic signature and genomic data in CD using blood plasma metabolic profiles. Proton NMR spectroscopy were achieved for 228 paediatric CD patients. Regression (OPLS) modelling and machine learning (ML) approaches were independently applied to establish the metabolic inflammatory signature, which was correlated against gene-level pathogenicity scores generated for all patients and functional enrichment was analysed. OPLS modelling of metabolomic spectra from unfasted patients revealed distinctive shifts in plasma metabolites corresponding to regions of the spectrum assigned to N-acetyl glycoprotein, glycerol and phenylalanine that were highly correlated (R 2 = 0.62) with C-reactive protein levels. The same metabolomic signature was independently identified using ML to predict patient inflammation status. Correlation of the individual peaks comprising this metabolomic signature of inflammation with pathogenic burden across 15,854 unselected genes identified significant enrichment for genes functioning within ‘intrinsic component of membrane’ (p = 0.003) and ‘inflammatory bowel disease (IBD)’ (p = 0.003). The seven genes contributing IBD enrichment are critical regulators of pro-inflammatory signaling. Overall, a metabolomic signature of inflammation can be detected from blood plasma in CD. This signal is correlated with pathogenic mutation in pro-inflammatory immune response genes.

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e-pub ahead of print date: 18 August 2022
Published date: 18 August 2022
Additional Information: Funding Information: This work was supported by European Society for Paediatric Research, Guts UK and by the National Institute for Health Research (NIHR) Southampton Biomedical Research Centre. JJA is funded by an ESPR post-doctoral grant and by an NIHR clinical lectureship. Funding Information: The authors would like to acknowledge: all patients and their families; Prof Niranjan for insightful comments; Nikki Graham for technical support; IRIDIS HPC Facility, University of Southampton; Chemical Analysis Facility, University of Reading. Publisher Copyright: © 2022, The Author(s).

Identifiers

Local EPrints ID: 469574
URI: http://eprints.soton.ac.uk/id/eprint/469574
ISSN: 2045-2322
PURE UUID: 62cb207c-6b55-44ba-a45c-6a9a6654e203
ORCID for Imogen S. Stafford: ORCID iD orcid.org/0000-0003-1666-1906
ORCID for Sarah Ennis: ORCID iD orcid.org/0000-0003-2648-0869

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Date deposited: 20 Sep 2022 16:40
Last modified: 17 Mar 2024 03:53

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Contributors

Author: Enrico Mossotto
Author: Joanna Boberska
Author: James J. Ashton
Author: Imogen S. Stafford ORCID iD
Author: Guo Cheng
Author: Jonathan Baker
Author: Florina Borca
Author: Hang T. T. Phan
Author: Tracy F. Coelho
Author: R. Mark Beattie
Author: Sandrine P. Claus
Author: Sarah Ennis ORCID iD

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