Metabolomics Workbench : NIH Data Repository

MB Sample ID: SA242393

Local Sample ID:	20220508_pos_KO_rep1_8ul
Subject ID:	SU002511
Subject Type:	Cultured cells
Subject Species:	Homo sapiens
Taxonomy ID:	9606
Cell Strain Details:	HEK293T

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Sample Preparation:

Sampleprep ID:	SP002517
Sampleprep Summary:	Lipids were isolated from collected cultured cells. Cells were washed with PBS, treated with cold 50% methanol (1mL) and transferred to glass vials. Next, chloroform (0.5mL) was added and samples were gently vortexed and centrifuged at 1,000x g for 5 min at 4˚C. Lipids were transferred to a clean glass vial using a glass Hamilton syringe. Lipids were extracted twice using chloroform prior to being dried under nitrogen gas. Samples were normalized according to protein concentration when resuspended in a 1:1:1 solution of methanol:chloroform:isopropanol prior to mass spectrometry (MS) analysis. To assist quantification various volumes were injected for MS (4, 8, and 16ul for positive mode analysis and 5, 10, and 15ul for negative mode analysis).

Sampleprep ID:

SP002517

Sampleprep Summary:

Lipids were isolated from collected cultured cells. Cells were washed with PBS, treated with cold 50% methanol (1mL) and transferred to glass vials. Next, chloroform (0.5mL) was added and samples were gently vortexed and centrifuged at 1,000x g for 5 min at 4˚C. Lipids were transferred to a clean glass vial using a glass Hamilton syringe. Lipids were extracted twice using chloroform prior to being dried under nitrogen gas. Samples were normalized according to protein concentration when resuspended in a 1:1:1 solution of methanol:chloroform:isopropanol prior to mass spectrometry (MS) analysis. To assist quantification various volumes were injected for MS (4, 8, and 16ul for positive mode analysis and 5, 10, and 15ul for negative mode analysis).