PC(16:1(9Z)/LTE4)
Formula: C47H83N2O11PS (914.5455)
Chinese Name:
BioDeep ID: BioDeep_00000211029
( View LC/MS Profile)
SMILES: CCCCCC\C=C/CCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)[C@@H](N)CS[C@H](\C=C\C=C\C=C/C\C=C/CCCCC)[C@@H](O)CCCC(O)=O
Found 9 Sample Hits
| m/z | Adducts | Species | Organ | Scanning | Sample | |
|---|---|---|---|---|---|---|
| 932.5654 | [M+NH4]+PPM:14.9 |
Mus musculus | Lung | MALDI (DHB) |
image3 - MTBLS2075Resolution: 40μm, 146x190
Fig. 4 MALDI-MSI data of mouse lung tissue after administration with D9-choline and U13C-DPPC–containing Poractant alfa surfactant (labels administered 12 h prior to tissue collection). Ion images of (A) m/z 796.6856 ([U13C-DPPC+Na]+), (B) m/z 756.5154 [PC32:0+Na]+), and (C) m/z 765.6079 ([D9-PC32:0+Na]+). D: Overlay image of [U13C-PC32:0+Na]+ (red) and [D9-PC32:0+Na]+ (green). Part-per-million (ppm) mass errors are indicated in parentheses. All images were visualized using total-ion-current normalization and using hotspot removal (high quantile = 99%). DPPC = PC16:0/16:0. MSI, mass spectrometry imaging; PC, phosphatidylcholine; U13C-DPPC, universally 13C-labeled dipalmitoyl PC. |
|
| 932.5673 | [M+NH4]+PPM:12.9 |
Mus musculus | Lung | MALDI (DHB) |
image4 - MTBLS2075Resolution: 40μm, 162x156
Fig 6c
Fig. 6 MALDI-MSI of U13C-PC16:0/16:0 acyl chain remodeling. A: Averaged MALDI mass spectrum from lung tissue collected from mice euthanized 12 h after administration of D9-choline and U13C-DPPC–containing Poractant alfa surfactant. The ion at m/z 828.6321 is assigned as the [M+Na]+ ion of 13C24-PC16:0_20:4 formed by acyl remodeling of U13C-PC16:0/16:0. The “NL” value refers to the intensity of the base peak in the full range MS1 spectrum. B: MS/MS spectrum of precursor ions at m/z 828.5 ± 0.5 with fragment ions originating from [13C24-PC16:0_20:4+Na]+ annotated. Part-per-million (ppm) mass errors are provided in parentheses. C, D: MALDI-MSI data of [U13C-DPPC+Na]+ (blue), [PC36:4+Na]+ (green) and [13C24-PC16:0_20:4+Na]+ (red) in lung tissue collected from mice (C) 12 h and (D) 18 h after label administration. All images were visualized using total-ion-current normalization and hotspot removal (high quantile = 99%). MS/MS, tandem mass spectrometry; MSI, mass spectrometry imaging; PC, phosphatidylcholine; U13C-DPPC, universally 13C-labeled dipalmitoyl PC. |
|
| 932.5675 | [M+NH4]+PPM:12.7 |
Mus musculus | Lung | MALDI (DHB) |
image5 - MTBLS2075Resolution: 40μm, 163x183
Supplementary Figure S8. MALDI-MSI data of mouse lung tissue administered with D9-choline and
U 13C-DPPC–containing Poractant alfa surfactant (labels administered 18 h prior to sacrifice). Ion
images of (a) m/z 796.6856 ([U13C-DPPC+Na]+), (b) m/z 756.5154 [PC32:0+Na]+ and (c) m/z 765.6079
([D9-PC32:0+Na]+). (d) Overlay image of [U13C-DPPC+Na]+ (red) and [D9-PC32:0+Na]+ (green).
Parts per million (ppm) mass errors are indicated in parentheses. All images were visualised using totalion-current normalisation and using hotspot removal (high quantile = 99%). DPPC = PC16:0/16:0. |
|
| 915.5637 | [M+H]+PPM:11.9 |
Homo sapiens | colorectal adenocarcinoma | DESI () |
80TopL, 50TopR, 70BottomL, 60BottomR-profile - MTBLS415Resolution: 17μm, 137x136
The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024). |
|
| 915.5582 | [M+H]+PPM:5.9 |
Mytilus edulis | mantle | MALDI (DHB) |
20190216_MS38_Mytilus_mantle_350-1500_DHB_pos_A26_10um_275x210 - MTBLS2960Resolution: 10μm, 275x210
|
|
| 915.5647 | [M+H]+PPM:13 |
Homo sapiens | colorectal adenocarcinoma | DESI () |
520TopL, 490TopR, 510BottomL, 500BottomR-profile - MTBLS415Resolution: 17μm, 147x131
The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024). |
|
| 915.5699 | [M+H]+PPM:18.7 |
Homo sapiens | colorectal adenocarcinoma | DESI () |
439TopL, 409TopR, 429BottomL, 419BottomR-profile - MTBLS415Resolution: 17μm, 157x136
The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024). |
|
| 915.5656 | [M+H]+PPM:14 |
Homo sapiens | NA | DESI () |
160TopL,130TopR,150BottomL,140BottomR-profile - MTBLS415Resolution: 17μm, 142x136
|
|
| 897.5409 | [M+H-H2O]+PPM:1.4 |
Homo sapiens | colorectal adenocarcinoma | DESI () |
200TopL, 170TopR, 190BottomL, 180BottomR-centroid - MTBLS176Resolution: 50μm, 132x126
|
|
PC(16:1(9Z)/LTE4) is an oxidized phosphatidylcholine (PC or GPCho). Oxidized phosphatidylcholines are glycerophospholipids in which a phosphorylcholine moiety occupies a glycerol substitution site and at least one of the fatty acyl chains has undergone oxidation. As all oxidized lipids, oxidized phosphatidylcholines belong to a group of biomolecules that have a role as signaling molecules. The biosynthesis of oxidized lipids is mediated by several enzymatic families, including cyclooxygenases (COX), lipoxygenases (LOX) and cytochrome P450s (CYP). Non-enzymatically oxidized lipids are produced by uncontrolled oxidation through free radicals and are considered harmful to human health (PMID: 33329396). As is the case with diacylglycerols, glycerophosphocholines can have many different combinations of fatty acids of varying lengths, saturation and degrees of oxidation attached at the C-1 and C-2 positions. PC(16:1(9Z)/LTE4), in particular, consists of one chain of one 9Z-hexadecenoyl at the C-1 position and one chain of Leukotriene E4 at the C-2 position. Phospholipids are ubiquitous in nature and are key components of the lipid bilayer of cells, as well as being involved in metabolism and signaling. Similarly to what occurs with phospholipids, the fatty acid distribution at the C-1 and C-2 positions of glycerol within oxidized phospholipids is continually in flux, owing to phospholipid degradation and the continuous phospholipid remodeling that occurs while these molecules are in membranes. Oxidized PCs can be synthesized via three different routes. In one route, the oxidized PC is synthetized de novo following the same mechanisms as for PCs but incorporating oxidized acyl chains (PMID: 33329396). An alternative is the transacylation of one of the non-oxidated acyl chains with an oxidated acylCoA (PMID: 33329396). The third pathway results from the oxidation of the acyl chain while still attached to the PC backbone, mainely through the action of LOX (PMID: 33329396).
