在BioDeep NovoCell知识数据库中,参考离子总共被划分为4个级别。
  • Confirmed: 这个参考离子已经通过手动审计得到确认和验证。
  • Reliable: 这个参考离子可能在特定的解剖组织环境中高度保守。
  • Unreliable: 这个参考离子具有较高的排名价值,但缺乏可重复性。
  • Unavailable: 由于排名价值低且缺乏可重复性,这个参考离子不应用于注释。

Found 14 Reference Ions Near m/z 718.1393
NovoCell ID m/z Mass Window Metabolite Ranking Anatomy Context
MSI_000011225 Unreliable 718.1393 718.1393 ~ 718.1393
MzDiff: none
(2e,4e,6e)-7-[(7s,8ar)-8a-[(2-acetyl-3,4-dihydroxy-5-methoxyphenyl)methyl]-5-bromo-7-{[(3r,5r)-3,5-dihydroxyhexanoyl]oxy}-7-methyl-6,8-dioxo-1h-isochromen-3-yl]hepta-2,4,6-trienoic acid (BioDeep_00002177701)
Formula: C33H35BrO13 (718.1261)
1.74 (100%) Mus musculus
[UBERON:0012378] muscle layer of urinary bladder
MSI_000011232 Unreliable 718.1321 718.1321 ~ 718.1321
MzDiff: none
Not Annotated 1.72 (0%) Mus musculus
[UBERON:0012378] muscle layer of urinary bladder
MSI_000011238 Unreliable 718.1466 718.1466 ~ 718.1466
MzDiff: none
Not Annotated 1.7 (0%) Mus musculus
[UBERON:0012378] muscle layer of urinary bladder
MSI_000054162 Unreliable 718.1316 718.1316 ~ 718.1317
MzDiff: 0.5 ppm
(2e,4e,6e)-7-[(7s,8ar)-8a-[(2-acetyl-3,4-dihydroxy-5-methoxyphenyl)methyl]-5-bromo-7-{[(3r,5r)-3,5-dihydroxyhexanoyl]oxy}-7-methyl-6,8-dioxo-1h-isochromen-3-yl]hepta-2,4,6-trienoic acid (BioDeep_00002177701)
Formula: C33H35BrO13 (718.1261)
3.3 (25%) MALDI - CHCA
[NOVOCELL:BACKGROUND] blank
MSI_000009418 Unavailable 718.1466 718.1466 ~ 718.1466
MzDiff: none
Not Annotated -0.38 (0%) Mus musculus
[UBERON:0004645] urinary bladder urothelium
MSI_000009423 Unavailable 718.1321 718.1321 ~ 718.1321
MzDiff: none
Not Annotated -0.39 (0%) Mus musculus
[UBERON:0004645] urinary bladder urothelium
MSI_000009429 Unavailable 718.1393 718.1393 ~ 718.1393
MzDiff: none
(2e,4e,6e)-7-[(7s,8ar)-8a-[(2-acetyl-3,4-dihydroxy-5-methoxyphenyl)methyl]-5-bromo-7-{[(3r,5r)-3,5-dihydroxyhexanoyl]oxy}-7-methyl-6,8-dioxo-1h-isochromen-3-yl]hepta-2,4,6-trienoic acid (BioDeep_00002177701)
Formula: C33H35BrO13 (718.1261)
-0.4 (100%) Mus musculus
[UBERON:0004645] urinary bladder urothelium
MSI_000054706 Unreliable 718.1312 718.1312 ~ 718.1312
MzDiff: none
(2e,4e,6e)-7-[(7s,8ar)-8a-[(2-acetyl-3,4-dihydroxy-5-methoxyphenyl)methyl]-5-bromo-7-{[(3r,5r)-3,5-dihydroxyhexanoyl]oxy}-7-methyl-6,8-dioxo-1h-isochromen-3-yl]hepta-2,4,6-trienoic acid (BioDeep_00002177701)
Formula: C33H35BrO13 (718.1261)
1.81 (100%) MALDI - DHB
[NOVOCELL:BACKGROUND] blank
MSI_000000919 Unavailable 718.1393 718.1393 ~ 718.1393
MzDiff: none
(2e,4e,6e)-7-[(7s,8ar)-8a-[(2-acetyl-3,4-dihydroxy-5-methoxyphenyl)methyl]-5-bromo-7-{[(3r,5r)-3,5-dihydroxyhexanoyl]oxy}-7-methyl-6,8-dioxo-1h-isochromen-3-yl]hepta-2,4,6-trienoic acid (BioDeep_00002177701)
Formula: C33H35BrO13 (718.1261)
-0.81 (100%) Mus musculus
[CL:0000066] epithelial cell
MSI_000000921 Unavailable 718.1466 718.1466 ~ 718.1466
MzDiff: none
Not Annotated -0.82 (0%) Mus musculus
[CL:0000066] epithelial cell
MSI_000000922 Unavailable 718.1321 718.1321 ~ 718.1321
MzDiff: none
Not Annotated -0.82 (0%) Mus musculus
[CL:0000066] epithelial cell
MSI_000004213 Unreliable 718.1301 718.1301 ~ 718.1301
MzDiff: none
Not Annotated 0.88 (0%) Homo sapiens
[UBERON:0002107] liver
MSI_000033432 Unreliable 718.1304 718.1304 ~ 718.1304
MzDiff: none
(2e,4e,6e)-7-[(7s,8ar)-8a-[(2-acetyl-3,4-dihydroxy-5-methoxyphenyl)methyl]-5-bromo-7-{[(3r,5r)-3,5-dihydroxyhexanoyl]oxy}-7-methyl-6,8-dioxo-1h-isochromen-3-yl]hepta-2,4,6-trienoic acid (BioDeep_00002177701)
Formula: C33H35BrO13 (718.1261)
2.07 (100%) Posidonia oceanica
[PO:0005352] xylem
MSI_000040336 Unavailable 718.1316 718.1316 ~ 718.1316
MzDiff: none
Not Annotated -0.16 (0%) Posidonia oceanica
[PO:0005417] phloem

Found 1 Sample Hits
Metabolite Species Sample
(2e,4e,6e)-7-[(7s,8ar)-8a-[(2-acetyl-3,4-dihydroxy-5-methoxyphenyl)methyl]-5-bromo-7-{[(3r,5r)-3,5-dihydroxyhexanoyl]oxy}-7-methyl-6,8-dioxo-1h-isochromen-3-yl]hepta-2,4,6-trienoic acid

Formula: C33H35BrO13 (718.1261)
Adducts: [M-H2O+NH4]+ (Ppm: 14)
Mus musculus (Urinary bladder)
HR2MSI_mouse_urinary_bladder - S096
Resolution: 10μm, 260x134

Description

Mass spectrometry imaging of phospholipids in mouse urinary bladder (imzML dataset)
The spatial distribution of phospholipids in a tissue section of mouse urinary bladder was analyzed by MALDI MS imaging at 10 micrometer pixel size with high mass resolution (using an LTQ Orbitrap mass spectrometer).

R, ö, mpp A, Guenther S, Schober Y, Schulz O, Takats Z, Kummer W, Spengler B, Histology by mass spectrometry: label-free tissue characterization obtained from high-accuracy bioanalytical imaging. Angew Chem Int Ed Engl, 49(22):3834-8(2010)

Fig. S2: Single ion images of compounds shown in Fig. 1A-B : (upper left to lower right) m/z = 743.5482 (unknown), m/z = 741.5307 (SM (16:0), [M+K]+), m/z = 798.5410 (PC (34:1), [M+K]+), m/z = 616.1767 (heme b, M+), m/z = 772.5253 (PC (32:0), [M+K]+).

Stability of determined mass values was in the range of +/- 1 ppm over 22 hours of measurement (Fig. S4), with a standard deviation of 0.56 ppm. Accuracy data were obtained during tissue scanning experiments by monitoring the mass signal at nominal mass 798. The internal lock mass function of the Orbitrap instrument was used for automatic calibration during imaging measurements, using the known matrix-related ion signals at m/z = 137.0233, m/z = 444.0925 and m/z = 716.1246.