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MB Sample ID: SA212531
| Local Sample ID: | 37895_Sk |
| Subject ID: | SU002315 |
| Subject Type: | Mammal |
| Subject Species: | Mus musculus |
| Taxonomy ID: | 10090 |
| Genotype Strain: | C57BL6 and FVB mixed strain |
| Age Or Age Range: | 54-59 weeks old |
| Gender: | Male and female |
| Animal Feed: | Specialty Feeds Irradiated Rat and Mouse Standard Chow Diet |
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Combined analysis:
| Analysis ID | AN003638 |
|---|---|
| Analysis type | MS |
| Chromatography type | Reversed phase |
| Chromatography system | Agilent 1290 Infinity II |
| Column | Agilent Zorbax Eclipse Plus C18 (100 x 2.1mm, 1.8 um) |
| MS Type | ESI |
| MS instrument type | Triple quadrupole |
| MS instrument name | Agilent 6490 QQQ |
| Ion Mode | POSITIVE |
| Units | pmol per mg (tissues) pmol per ml (plasma) |
MS:
| MS ID: | MS003389 |
| Analysis ID: | AN003638 |
| Instrument Name: | Agilent 6490 QQQ |
| Instrument Type: | Triple quadrupole |
| MS Type: | ESI |
| MS Comments: | Details previously published in https://doi.org/10.1016/j.chembiol.2018.10.008 Analysis of plasma extracts was performed on an Agilent 6490 QQQ mass spectrometer with an Agilent 1290 series HPLC system and a ZORBAX eclipse plus C18 column (2.1x100mm 1.8μm, Agilent) with the thermostat set at 60°C. Mass spectrometry analysis was performed in positive ion mode with dynamic scheduled multiple reaction monitoring (MRM). Mass spectrometry settings and MRM transitions for each lipid class, subclass and individual species are shown in Tables 1 and S1. The solvent system consisted of solvent A) 50% H2O / 30% acetonitrile / 20% isopropanol (v/v/v) containing 10mM ammonium formate and solvent B) 1% H2O / 9% acetonitrile / 90% isopropanol (v/v/v) containing 10mM ammonium formate. We utilized a stepped linear gradient with a 15-minute cycle time per sample and a 1μL sample injection. The gradient was as follows; starting with a flow rate of 0.4ml/minute at 10% B and increasing to 45% B over 2.7 minutes, then to 53% over 0.1 minutes, to 65% over 6.2 minutes, to 89% over 0.1 minute, to 92% over 1.9 minutes and finally to 100% over 0.1 minute. The solvent was then held at 100% B for 0.8 minutes (total 11.9 minutes). Equilibration was as follows, solvent was decreased from 100% B to 10% B over 0.1 minute and held for an additional 0.9 minutes. Flow rate was then switched to 0.6 ml/minute for 1 minute before returning to 0.4 ml/minute over 0.1 minutes. Solvent B was held at 10% B for a further 0.9 minutes at 0.4ml/minutes for a total cycle time of 15 minutes. The following mass spectrometer conditions were used; gas temperature, 150°C, gas flow rate 17L/min, nebulizer 20psi, Sheath gas temperature 200°C, capillary voltage 3500V and sheath gas flow 10L/min. Isolation widths for Q1 and Q3 were set to “unit” resolution (0.7 amu). PQC samples consisting of a pooled set of 6 healthy individuals were incorporated into the analysis at 1 PQC per 18 plasma samples. TQC consisted of PQC extracts which were pooled and split into individual vials to provide a measure of technical variation from the mass spectrometer only. These were included at a ratio of 1 TQC per 18 plasma samples. TQCs were monitored for changes in peak area, width and retention time to determine the performance of the LC-MS/MS analysis and were subsequently used to align for differential responses across the analytical batches. |
| Ion Mode: | POSITIVE |
