Summary of Study ST002526

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 PR001627. The data can be accessed directly via it's Project DOI: 10.21228/M8D434 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	ST002526
Study Title	Stable isotope tracing of 15N2-glutamine in orthotopic pancreatic ductal adenocarcinoma tumor bearing mice and non tumor-bearing controls
Study Summary	Stable isotope tracing by bolus intravenous injections of 15N2-glutamine in orthotopic PDAC tumor bearing mice and non tumor-bearing controls followed by plasma sampling and tumor extraction for analysis of intratumoral metabolite labeling during the period of kinetic labeling
Institute	University of Chicago
Last Name	Apiz Saab
First Name	Juan
Address	929 E. 57th St.
Email	japizsaab@uchicago.edu
Phone	7738346506
Submit Date	2022-08-05
Raw Data Available	Yes
Raw Data File Type(s)	raw(Thermo)
Analysis Type Detail	LC-MS
Release Date	2023-04-13
Release Version	1

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Sample Preparation:

Sampleprep ID:	SP002632
Sampleprep Summary:	Cryogenically frozen tumor pieces were ground to a fine homogenous powder with a liquid nitrogen cooled mortar and pestle. ~30mg of tissue powder was weighed into sample tubes, and metabolites were extracted with 600µL HPLC grade methanol, 300µL HPLC grade water, and 400µL chloroform. Samples were vortexed for 10min at 4°C, centrifuged 21,000xg at 4°C for 10 min. 400µL of the aqueous top layer was removed into a new tube and dried under nitrogen. Dried tumor extracts were resuspended in 100µL HPLC grade water and LC-MS analysis was performed as described before(Sullivan et al., 2019b, 2019a). For plasma samples, we extracted polar metabolites from 5µL of sample using 45µL of a 75:25:0.1 HPLC grade acetonitrile:methanol:formic acid extraction mix. Samples in extraction mix were vortexed for 10 min at 4°C and centrifugated at 15,000x rpm for 10 min at 4°C to pellet insoluble material. 20µL of the soluble polar metabolite supernatant was moved to sample vials for analysis by LC-MS.

Sampleprep ID:

SP002632

Sampleprep Summary:

Cryogenically frozen tumor pieces were ground to a fine homogenous powder with a liquid nitrogen cooled mortar and pestle. ~30mg of tissue powder was weighed into sample tubes, and metabolites were extracted with 600µL HPLC grade methanol, 300µL HPLC grade water, and 400µL chloroform. Samples were vortexed for 10min at 4°C, centrifuged 21,000xg at 4°C for 10 min. 400µL of the aqueous top layer was removed into a new tube and dried under nitrogen. Dried tumor extracts were resuspended in 100µL HPLC grade water and LC-MS analysis was performed as described before(Sullivan et al., 2019b, 2019a). For plasma samples, we extracted polar metabolites from 5µL of sample using 45µL of a 75:25:0.1 HPLC grade acetonitrile:methanol:formic acid extraction mix. Samples in extraction mix were vortexed for 10 min at 4°C and centrifugated at 15,000x rpm for 10 min at 4°C to pellet insoluble material. 20µL of the soluble polar metabolite supernatant was moved to sample vials for analysis by LC-MS.