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. Author manuscript; available in PMC: 2013 Nov 6.
Published in final edited form as: Anal Chem. 2012 Oct 10;84(21):8917–8926. doi: 10.1021/ac302154g

Table 1.

Summary of the number of assigned lipid ions, identified lipids, and total lipid species from crude lipid extracts derived from the SW480 and SW620 CRC cell lines.

SW480 SW620
Lipid Class Assigned Lipid Ions1 Identified Lipids2 Total Lipids3 Assigned Lipid Ions1 Identified Lipids2 Total Lipids3
PC 85 93 130 80 125 154
PE 77 154 164 60 149 158
PA 15 30 30 12 26 26
PS 25 62 62 27 74 74
PI 24 33 39 19 32 36
PG 7 9 9 7 9 9
LPC 4 4 4 5 5 5
LPE 15 18 18 15 19 19
LPS 5 5 5 5 5 5
SM 17 1 17 17 1 17
Cer 6 0 6 6 0 6
TG 30 60 68 59 96 133
DG 24 0 27 26 0 30
MG 14 15 15 14 16 16
Chol 1 1 1 1 1 1
Chol ester 5 5 5 15 15 15
Total 354 490 600 368 573 694
1

Total number of peaks identified for each lipid sub-class, for which the sum composition (i.e., the identity of the individual headgroup and the combined total number of carbons and double bonds within the acyl, alkyl and/or alkenyl chains) could be assigned from the mass spectra.

2

Identified lipids categorizes those species whose molecular lipid identities of their individual fatty acyl, alkyl and/or alkenyl chains could be determined by MS/MS.

3

Total lipids includes the combined number of lipids whose identities of their individual fatty acyl, alkyl and/or alkenyl chains could be determined by MS/MS, as well as those lipids where only the total number of carbons and double bonds within the acyl, alkyl and/or alkenyl chains could be assigned from the mass spectra.