PG(16:0/22:6(5Z,8E,10Z,13Z,15E,19Z)-2OH(7S, 17S))

Found 12 Sample Hits

m/z	Adducts	Species	Organ	Scanning	Sample
844.5278	[M+NH4]+ PPM:6.6	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_43 - MTBLS58 Resolution: 17μm, 298x106 Description
844.5283	[M+NH4]+ PPM:6.1	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_44 - MTBLS58 Resolution: 17μm, 299x111 Description
844.5278	[M+NH4]+ PPM:6.6	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_46 - MTBLS58 Resolution: 17μm, 298x106 Description
844.5278	[M+NH4]+ PPM:6.6	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_47 - MTBLS58 Resolution: 17μm, 301x111 Description
844.5279	[M+NH4]+ PPM:6.5	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_48 - MTBLS58 Resolution: 17μm, 294x107 Description
849.4733	[M+Na]+ PPM:18.3	Mus musculus	Lung	MALDI (DHB)	image3 - MTBLS2075 Resolution: 40μm, 146x190 Description 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.
827.5068	[M+H]+ PPM:0.1	Homo sapiens	esophagus	DESI ()	LNTO22_1_7 - MTBLS385 Resolution: 75μm, 69x54 Description
844.5262	[M+NH4]+ PPM:8.5	Mus musculus	brain	MALDI (DHB)	Brain02_Bregma1-42_03 - MTBLS313 Resolution: 17μm, 483x403 Description
827.5046	[M+H]+ PPM:2.7	Homo sapiens	colorectal adenocarcinoma	DESI ()	240TopL, 210TopR, 230BottomL, 220BottomR-centroid - MTBLS176 Resolution: 50μm, 142x141 Description
827.5052	[M+H]+ PPM:2	Homo sapiens	colorectal adenocarcinoma	DESI ()	200TopL, 170TopR, 190BottomL, 180BottomR-centroid - MTBLS176 Resolution: 50μm, 132x126 Description
827.5045	[M+H]+ PPM:2.9	Homo sapiens	colorectal adenocarcinoma	DESI ()	160TopL,130TopR,150BottomL,140BottomR-centroid - MTBLS176 Resolution: 50μm, 142x136 Description
827.5051	[M+H]+ PPM:2.1	Homo sapiens	colorectal adenocarcinoma	DESI ()	120TopL, 90TopR, 110BottomL, 100BottomR-centroid - MTBLS176 Resolution: 50μm, 132x136 Description

PG(16:0/22:6(5Z,8E,10Z,13Z,15E,19Z)-2OH(7S, 17S)) is an oxidized phosphatidylglycerol (PG). Oxidized phosphatidylglycerols are glycerophospholipids in which a phosphoglycerol moiety occupies a glycerol substitution site and at least one of the fatty acyl chains has undergone oxidation. As all oxidized lipids, oxidized phosphatidylglycerols 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, phosphatidylglycerols 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. PG(16:0/22:6(5Z,8E,10Z,13Z,15E,19Z)-2OH(7S, 17S)), in particular, consists of one chain of one hexadecanoyl at the C-1 position and one chain of Resolvin D5 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 PGs can be synthesized via three different routes. In one route, the oxidized PG is synthetized de novo following the same mechanisms as for PGs but incorporating oxidized acyl chains (PMID: 33329396). An alternative is the transacylation of one of the non-oxidized acyl chains with an oxidized acylCoA (PMID: 33329396). The third pathway results from the oxidation of the acyl chain while still attached to the PG backbone, mainly through the action of LOX (PMID: 33329396).