TABLE 1.
Effect of SMS1 overexpression on TAG fatty acid composition in control conditions and in the presence of 1 mm palmitic acid
The identification of each TG lipid species is based on exact monoisotopic precursor mass, fragment ion information, and theoretical isotopic distribution.
| m/za | Accepted identificationb | Total carbon: double bond | 1 mm palmitic acid, HepG2-SMS1 versus HepG2-EV |
Vehicle, HepG2-SMS1 versus HepG2-EV |
||
|---|---|---|---|---|---|---|
| -Fold change | p(corr) | -Fold change | p(corr) | |||
| 970.7855 | TG (18:3/20:3/22:5) | TG (60:11) | 11.1 | 0.997344 | 3.8 | 0.968865 |
| 972.8017 | TG (18:1/20:3/22:6) | TG (60:10) | 7.2 | 0.995491 | 2.5 | 0.973176 |
| 944.7698 | TG (18:3/18:3/22:4) | TG (58:10) | 6.2 | 0.996561 | 2.4 | 0.963495 |
| 948.8008 | TG (18:1/18:4/22:3) | TG (58:8) | 4.5 | 0.994698 | 1.6 | 0.941047 |
| 924.8014 | TG (16:0/18:1/22:5) | TG (56:6) | 4.2 | 0.997911 | 2.1 | 0.957018 |
| 898.7848 | TG (16:0/18:1/20:4) | TG (54:5) | 3.8 | 0.997447 | 2.1 | 0.955878 |
| 894.7545 | TG (16:0/18:3:20:4) | TG (54:7) | NDc | ND | 1.7 | 0.957635 |
| 926.8156 | TG (16:0/18:1/18:2) | TG (52:3) | 2.9 | 0.989006 | 1.5 | 0.919795 |
| 950.8175 | TG (18:3/20:1/20:3) | TG (58:7) | 2.7 | 0.986254 | 1.7 | 0.944278 |
| 948.8008 | TG (18:1/18:4/22:3) | TG (58:8) | ND | ND | 1.7 | 0.941047 |
| 922.7857 | TG (16:0/18:1/22:6) | TG (56:7) | 2.6 | 0.985647 | 1.4 | 0.917071 |
| 952.8328 | TG (18:0/18:2/22:4) | TG (58:6) | 2.6 | 0.992549 | 1.6 | 0.931402 |
| 874.7859 | TG (16:1/18:0/22:4) | TG (56:5) | 2.3 | 0.995110 | ND | ND |
| 902.8155 | TG (16:0/18:0/20:3) | TG (54:3) | 2.2 | 0.973230 | 1.1 | 0.801826 |
| 926.8173 | TG (16:0/20:1/20:4) | TG (56:5) | 2.1 | 0.983169 | 2.0 | 0.919795 |
| 870.7542 | TG (16:0/18:2/18:3) | TG (52:5) | 2.0 | 0.989413 | 1.8 | 0.949937 |
| 896.7698 | TG (16:0/16:1/22:5) | TG (54:6) | 2.0 | 0.954632 | 1.4 | 0.878744 |
| 896.7707 | TG (16:0/18:1/20:5) | TG (54:6) | 2.0 | 0.982693 | 1.7 | 0.96172 |
| 876.7998 | TG (16:0/18:0/18:2) | TG (54:2) | 1.8 | 0.940230 | 1.2 | 0.804526 |
| 872.7705 | TG (16:0/16:0/20:4) | TG (52:4) | 1.7 | 0.973257 | 1.2 | 0.871994 |
| 824.7703 | TG (16:0/16:0/16:0) | TG (48:0) | 1.2 | 0.831157 | ND | ND |
| 850.7859 | TG (16:0/16:0/18:1) | TG (50:1) | 0.90 | −0.648602 | 1.4 | 0.883765 |
| 822.7545 | TG (16:0/16:0/16:1) | TG (48:1) | 0.53 | −0.970125 | 1.2 | 0.824069 |
| 794.7232 | TG (14:0/16:0/16:1) | TG (46:1) | 0.48 | −0.984013 | ND | ND |
| 848.7702 | TG (16:0/16:0/18:2) | TG (50:2) | 0.42 | −0.920163 | ND | ND |
| 820.7388 | TG (16:0/16:1/16:1) | TG (48:2) | 0.27 | −0.954241 | ND | ND |
a All TG were identified as ammonium adducts.
b sn-1, sn-2, and sn-3 fatty acid assignments are arbitrary.
c ND, not detected.