SM(d19:0/PGJ2)
Formula: C44H81N2O8P (796.573)
Chinese Name:
BioDeep ID: BioDeep_00000215619
( View LC/MS Profile)
SMILES: CCCCCCCCCCCCCCCC[C@@H](O)[C@H](COP([O-])(=O)OCC[N+](C)(C)C)NC(=O)CCC\C=C/C[C@H]1C=CC(=O)[C@@H]1\C=C\[C@@H](O)CCCCC
Found 16 Sample Hits
| m/z | Adducts | Species | Organ | Scanning | Sample | |
|---|---|---|---|---|---|---|
| 796.6112 | [M-H2O+NH4]+PPM:18.7 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito03_18 - MTBLS58Resolution: 17μm, 208x104
|
|
| 796.6111 | [M-H2O+NH4]+PPM:18.6 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito08_43 - MTBLS58Resolution: 17μm, 298x106
|
|
| 796.611 | [M-H2O+NH4]+PPM:18.5 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito08_44 - MTBLS58Resolution: 17μm, 299x111
|
|
| 796.6107 | [M-H2O+NH4]+PPM:18.1 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito08_46 - MTBLS58Resolution: 17μm, 298x106
|
|
| 796.6106 | [M-H2O+NH4]+PPM:18 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito08_47 - MTBLS58Resolution: 17μm, 301x111
|
|
| 796.6105 | [M-H2O+NH4]+PPM:17.8 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito08_48 - MTBLS58Resolution: 17μm, 294x107
|
|
| 796.6108 | [M-H2O+NH4]+PPM:18.2 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito01_04 - MTBLS58Resolution: 17μm, 178x91
|
|
| 796.6107 | [M-H2O+NH4]+PPM:18.1 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito01_03 - MTBLS58Resolution: 17μm, 159x110
|
|
| 796.6108 | [M-H2O+NH4]+PPM:18.2 |
Rattus norvegicus | normal | MALDI (DHB) |
epik_dhb_head_ito01_05 - MTBLS58Resolution: 17μm, 183x105
|
|
| 796.6108 | [M-H2O+NH4]+PPM:18.2 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito01_06 - MTBLS58Resolution: 17μm, 183x103
|
|
| 796.611 | [M-H2O+NH4]+PPM:18.5 |
Rattus norvegicus | Epididymis | MALDI (DHB) |
epik_dhb_head_ito03_14 - MTBLS58Resolution: 17μm, 205x103
|
|
| 796.588 | [M-H2O+NH4]+PPM:10.4 |
Mus musculus | Lung | MALDI (DHB) |
image1 - MTBLS2075Resolution: 40μm, 187x165
Fig. 2 MALDI-MSI data from the same mouse lung tissue analyzed in Fig. 1. A: Optical image of the post-MSI, H&E-stained tissue section. B–D, F–G: Ion images of (B) m/z 796.6855 ([U13C-DPPC+Na]+), (C) m/z 756.5514 ([PC32:0+Na]+), (D) m/z 765.6079 ([D9-PC32:0+Na]+), (F) m/z 754.5359 ([PC32:1+Na]+), and (G) m/z 763.5923 ([D9-PC32:1+Na]+). E, H: Ratio images of (E) [D9-PC32:0+Na]+:[PC32:0+Na]+ and (H) [D9-PC32:1+Na]+:[PC32:1+Na]+. 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. U13C-DPPC, universally 13C-labeled dipalmitoyl PC; PC, phosphatidylcholine; MSI, mass spectrometry imaging; H&E, hematoxylin and eosin.
Fig 1-3, Fig S1-S3, S5 |
|
| 796.5874 | [M-H2O+NH4]+PPM:11.2 |
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. |
|
| 796.5878 | [M-H2O+NH4]+PPM:10.7 |
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. |
|
| 796.5725 | [M]+PPM:0 |
Homo sapiens | esophagus | DESI () |
LNTO22_1_4 - MTBLS385Resolution: 17μm, 82x80
|
|
| 796.5893 | [M-H2O+NH4]+PPM:8.8 |
Homo sapiens | esophagus | DESI () |
LNTO26_7_3 - MTBLS385Resolution: 75μm, 82x88
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SM(d19:0/PGJ2) is a type of oxidized sphingolipid found in animal cell membranes. It usually consists of phosphorylcholine and ceramide. SM(d19:0/PGJ2) consists of a sphingosine backbone and a Prostaglandin J2 chain. In humans, sphingomyelin is the only membrane phospholipid not derived from glycerol. Like all sphingolipids, SM has a ceramide core (sphingosine bonded to a fatty acid via an amide linkage). In addition, it contains one polar head group, which is either phosphocholine or phosphoethanolamine. The plasma membrane of cells is highly enriched in sphingomyelin and is considered largely to be found in the exoplasmic leaflet of the cell membrane. However, there is some evidence that there may also be a sphingomyelin pool in the inner leaflet of the membrane. Moreover, neutral sphingomyelinase-2, an enzyme that breaks down sphingomyelin into ceramide, has been found to localize exclusively to the inner leaflet further suggesting that there may be sphingomyelin present there. Sphingomyelin can accumulate in a rare hereditary disease called Niemann-Pick Disease, types A and B. Niemann-Pick disease is a genetically-inherited disease caused by a deficiency in the enzyme sphingomyelinase, which causes the accumulation of sphingomyelin in spleen, liver, lungs, bone marrow, and the brain, causing irreversible neurological damage. SMs play a role in signal transduction. Sphingomyelins are synthesized by the transfer of phosphorylcholine from phosphatidylcholine to a ceramide in a reaction catalyzed by sphingomyelin synthase.
