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MB Sample ID: SA298927
| Local Sample ID: | H01_T0.50 |
| Subject ID: | SU002892 |
| Subject Type: | Human |
| Subject Species: | Homo sapiens |
| Taxonomy ID: | 9606 |
| Gender: | Male and female |
Select appropriate tab below to view additional metadata details:
Subject:
| Subject ID: | SU002892 |
| Subject Type: | Human |
| Subject Species: | Homo sapiens |
| Taxonomy ID: | 9606 |
| Gender: | Male and female |
Factors:
| Local Sample ID | MB Sample ID | Factor Level ID | Level Value | Factor Name |
|---|---|---|---|---|
| H01_T0.50 | SA298927 | FL036213 | DCD | Group |
| H01_T0.50 | SA298927 | FL036213 | 30 | Timepoint |
Collection:
| Collection ID: | CO002885 |
| Collection Summary: | Perfusate samples were collected in ethylenediaminetetraacetic acid (EDTA) tubes, at baseline (before the kidney was mounted on the normothermic perfusion device), every 15 minutes during the first hour and hourly thereafter. One milliliter perfusate aliquots (centrifuged 1000g, 10 minutes, 4°C) were snap frozen in liquid nitrogen and stored at -80°C until analysis. |
| Sample Type: | Perfusate |
| Collection Frequency: | Baseline (T0) and during perfusion at 15 min (T0.25), 30 min (T0.50), 45 min (T0.75), 1 hour (T1), 2 hours (T2), 3 hours (T3), 4 hours (T4) |
| Storage Conditions: | -80℃ |
| Additives: | EDTA |
Treatment:
| Treatment ID: | TR002901 |
| Treatment Summary: | Human kidneys retrieved to be transplanted but finally deemed not suitable for transplantation by all Eurotransplant kidney transplant centers were brought to the lab. The kidneys were retrieved following national protocols and stored in IGL-1 on ice. Kidneys were donated after brain death (DBD) or after circulatory death (DCD). All kidneys were flushed with 200 ml of Ringer’s solution before mounting them on the ex situ circuit to wash out IGL-1. |
Sample Preparation:
| Sampleprep ID: | SP002898 |
| Sampleprep Summary: | Samples were extracted in an 80% methanol (80:20 methanol:water) (Methanol ≥99.9%, HiPerSolv CHROMANORM®, ULTRA for LC-MS, suitable for UPLC/UHPLC-MS instruments, VWR, Belgium) extraction buffer containing 1 µM of deuterated D27 myristic acid, 5 µM D12 glucose, 3 µM 13C5-D5-15N Glutamic acid and 3 µM D7-15N4-Arginine as internal standards. 10 µl of sample was added to 990 µl of the extraction buffer and stored overnight at -80 °C. Insolubilities and precipitated proteins were removed by centrifugation at 20.000 g, for 15 min at 4 °C. 200 µL of the supernatant was transferred to an appropriate mass-spectrometry vial. 10 µl of sample was added to 990 µl of the extraction buffer and stored overnight at -80 °C. |
| Extract Storage: | -80℃ |
Combined analysis:
| Analysis ID | AN004532 |
|---|---|
| Analysis type | MS |
| Chromatography type | HILIC |
| Chromatography system | Agilent 1290 Infinity |
| Column | Agilent InfinityLab Poroshell 120 (2.1 x 150 mm, 2.7 um) |
| MS Type | ESI |
| MS instrument type | Orbitrap |
| MS instrument name | Thermo Q Exactive Focus |
| Ion Mode | NEGATIVE |
| Units | Peak area |
Chromatography:
| Chromatography ID: | CH003405 |
| Chromatography Summary: | 10 µl was loaded onto an Ultra Performance Liquid Chromatograph (UPLC) equipped with a Hydrophilic Interaction Liquid Chromatography (HILIC) column (InfinityLab Poroshell 120 HILIC-Z PEEK-lined 2.1 x 150 mm, 2.7 µm column; Agilent, Santa Clara, USA)) and connected in-line to a Q-exactive Orbitrap Focus (Thermo Fisher Scientific, Massachusetts, USA) mass spectrometer. A linear gradient was built up starting with 90% solvent A (LC-MS grade acetonitrile, Acetonitrile hypergrade for LC-MS LiChrosolv, Supelco (Merck), Germany) and 10% solvent B (10 mM ammonium acetate (LiChropur™, eluent additive for LC-MS, (Merck), Germany), pH 9.3). At 2 min the gradient increased to 60% of solvent B and maintained at 60% until 15 min. The gradient returned to 10% solvent B at 16 min and remained until 25 min. The flow rate was 250 µl/min and the column was kept at 25°C throughout the analysis. The MS operated in negative ion mode, with a spray voltage of 2.9 kV and a temperature of the capillary of 325 °C. Gas settings were as follows: sheath gas 40 and auxiliary gas 15. The vaporizer temperature was set at 300 °C. A full scan (resolution of 70.000 and scan range of m/z 70-1050) was applied. XCalibur version to operate the LC-MS was 4.2.47. |
| Instrument Name: | Agilent 1290 Infinity |
| Column Name: | Agilent InfinityLab Poroshell 120 (2.1 x 150 mm, 2.7 um) |
| Column Temperature: | 25°C |
| Flow Gradient: | A linear gradient was built up starting with 90% solvent A and 10% solvent B. At 2 min the gradient increased to 60% of solvent B and maintained at 60% until 15 min. |
| Flow Rate: | 250 µl/min |
| Solvent A: | 100% acetonitrile |
| Solvent B: | 100% water; 10 mM ammonium acetate, pH 9.3 |
| Chromatography Type: | HILIC |
MS:
| MS ID: | MS004279 |
| Analysis ID: | AN004532 |
| Instrument Name: | Thermo Q Exactive Focus |
| Instrument Type: | Orbitrap |
| MS Type: | ESI |
| MS Comments: | Raw MS data were converted into mzML using the MSConvert tool of Proteowizard (version 3.0.20247). Peak picking was performed with El_Maven (El_Maven, Elucidata, Massachusetts, USA, version 0.12.0). Metabolites were identified using an in-house library containing exact mass and retention time. The mass accuracy during data processing in El Maven was set at 10 ppm. Calculation of abundances was done in the LC-MS Workflow of El_Maven. Raw abundances (peak area values) for each metabolite were corrected for internal standard (Myristic acid d27). |
| Ion Mode: | NEGATIVE |
