Multi-omics empowered deep phenotyping of ulcerative colitis identifies biomarker signatures reporting functional remission states

Lukas Janker, Dina Schuster, Patricia Bortel, Gerhard Hagn, Samuel M Meier-Menches, Thomas Mohr, Johanna C Mader, Astrid Slany, Andrea Bileck, Julia Brunmair, Christian Madl, Lukas Unger, Barbara Hennlich, Barbara Weitmayr, Giorgia Del Favero, Dietmar Pils, Tobias Pukrop, Nikolaus Pfisterer, Thomas Feichtenschlager, Christopher Gerner (Korresp. Autor*in)

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed

Abstract

Introduction: Ulcerative colitis [UC] is a chronic disease with rising incidence and unclear aetiology. Deep molecular phenotyping by multiomics analyses may provide novel insights into disease processes and characteristic features of remission states. Methods: UC pathomechanisms were assessed by proteome profiling of human tissue specimens, obtained from five distinct colon locations for each of the 12 patients included in the study. Systemic disease-associated alterations were evaluated thanks to a cross-sectional setting of mass spectrometry-based multiomics analyses comprising proteins, metabolites, and eicosanoids of plasma obtained from UC patients during acute episodes and upon remission, in comparison with healthy controls. Results: Tissue proteome profiling indicated colitis-associated activation of neutrophils, macrophages, B and T cells, fibroblasts, endothelial cells and platelets, and hypoxic stress, and suggested a general downregulation of mitochondrial proteins accompanying the establishment of apparent wound healing-promoting activities including scar formation. Whereas pro-inflammatory proteins were apparently upregulated by immune cells, the colitis-associated epithelial cells, fibroblasts, endothelial cells, and platelets seemed to predominantly contribute anti-inflammatory and wound healing-promoting proteins. Blood plasma proteomics indicated chronic inflammation and platelet activation, whereas plasma metabolomics identified disease-associated deregulations of gut and gut microbiome-derived metabolites. Upon remission several, but not all, molecular candidate biomarker levels recovered back to normal. Conclusion:. The findings may indicate that microvascular damage and platelet deregulation hardly resolve upon remission, but apparently persist as disease-associated molecular signatures. This study presents local and systemic molecular alterations integrated in a model for UC pathomechanisms, potentially supporting the assessment of disease and remission states in UC patients.

OriginalspracheEnglisch
Seiten (von - bis)1514-1527
Seitenumfang14
FachzeitschriftJournal of Crohn's & colitis
Jahrgang17
Ausgabenummer9
DOIs
PublikationsstatusVeröffentlicht - 1 Sept. 2023

ÖFOS 2012

  • 302016 Gastroenterologie
  • 106037 Proteomik
  • 301303 Medizinische Biochemie

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