Summary of Study ST003054

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR001903. The data can be accessed directly via it's Project DOI: 10.21228/M8R14K This work is supported by NIH grant, U2C- DK119886.

See: https://www.metabolomicsworkbench.org/about/howtocite.php

This study contains a large results data set and is not available in the mwTab file. It is only available for download via FTP as data file(s) here.

Study ID	ST003054
Study Title	Integrated metabolomics and proteomics of symptomatic and early pre-symptomatic states of colitis
Study Summary	Colitis has a multifactorial pathogenesis with a strong cross-talk among microbiota, hypoxia and tissue metabolism. Here, we aimed to characterize the molecular signature of the disease in symptomatic and pre-symptomatic stages of the inflammatory process at the tissue and fecal level. The study is based on two different murine models for colitis. High-resolution Magic Angle Spinning NMR on cryopreserved “intact” colon tissues and LC-MS/MS on colon tissue extracts were used to derive untargeted metabolomics and proteomics information, respectively. Solution NMR was used to derive metabolomic profiles of fecal extracts. By combining metabolomic and proteomic analyses of the tissues, we found increased anaerobic glycolysis, accompanied by altered citric acid cycle and oxidative phosphorylation in inflamed colons; these changes associate with inflammation-induced hypoxia taking place in colon tissues. Pre-symptomatic states can be discriminated from healthy samples before macroscopic inflammation is observed. Different colitis states are characterized by significantly different metabolomic profiles of fecal extracts, attributable to both the dysbiosis characteristic of colitis, as well as the dysregulated tissue metabolism. Strong and distinctive fecal metabolomic signatures can be detected before onset of symptoms. Therefore, untargeted metabolomics of tissues and fecal extracts provides a comprehensive picture of the changes accompanying the disease onset already at pre-clinical stages, highlighting the diagnostic potential of global metabolomics for inflammatory diseases.
Institute	University of Florence
Last Name	Ghini
First Name	Veronica
Address	via Luigi Sacconi, 6, Sesto Fiorentino, Firenze, 50019, Italy
Email	ghini@cerm.unifi.it
Phone	+390554574266
Submit Date	2024-01-23
Num Groups	5
Total Subjects	50
Raw Data Available	Yes
Raw Data File Type(s)	fid
Analysis Type Detail	NMR
Release Date	2024-02-28
Release Version	1

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Treatment:

Treatment ID:	TR003178
Treatment Summary:	Acute colitis was induced in wild type (WT) C57BL/6 mice via addition of 1.25% DSS into the drinking water for seven days. To gain insight on chronic intestinal inflammation, we used C57BL/6 IL-10-/- mice that spontaneously develop chronic colon inflammation. This inflammation is not chemically induced, but rather is considered to be a result of a dysregulated immune system, which more resembles the clinical manifestation of chronic UC and CD patients and mimics a monogenic form of IBD20. In order to synchronize and accelerate the onset of chronic colitis, mice were exposed to 200 ppm piroxicam (Sigma-Aldrich ltd.) via supplementation in normal murine chow for 14 days. With the described experimental procedures, we obtained five groups of mice (10 mice per group) for further analysis: 1) Healthy WT; 2) Day 4 of DSS (pre-symptomatic); 3) Day 10 of DSS (acute colitis); 4) Healthy IL-10-/- (pre-symptomatic); and 5) Ill IL-10-/- (chronic colitis).

Treatment ID:

TR003178

Treatment Summary:

Acute colitis was induced in wild type (WT) C57BL/6 mice via addition of 1.25% DSS into the drinking water for seven days. To gain insight on chronic intestinal inflammation, we used C57BL/6 IL-10-/- mice that spontaneously develop chronic colon inflammation. This inflammation is not chemically induced, but rather is considered to be a result of a dysregulated immune system, which more resembles the clinical manifestation of chronic UC and CD patients and mimics a monogenic form of IBD20. In order to synchronize and accelerate the onset of chronic colitis, mice were exposed to 200 ppm piroxicam (Sigma-Aldrich ltd.) via supplementation in normal murine chow for 14 days. With the described experimental procedures, we obtained five groups of mice (10 mice per group) for further analysis: 1) Healthy WT; 2) Day 4 of DSS (pre-symptomatic); 3) Day 10 of DSS (acute colitis); 4) Healthy IL-10-/- (pre-symptomatic); and 5) Ill IL-10-/- (chronic colitis).