#METABOLOMICS WORKBENCH kevin.cho@wustl.edu_20240409_091613 DATATRACK_ID:4766 STUDY_ID:ST003162 ANALYSIS_ID:AN005189 PROJECT_ID:PR001967 VERSION 1 CREATED_ON April 10, 2024, 6:57 pm #PROJECT PR:PROJECT_TITLE Loss of dihydroceramide desaturase drives neurodegeneration by disrupting PR:PROJECT_TITLE endoplasmic reticulum and lipid droplet homeostasis in glial cells PR:PROJECT_TYPE Untargeted Metabolomics and Lipidomics PR:PROJECT_SUMMARY Dihydroceramide desaturases convert dihydroceramides to ceramides, the PR:PROJECT_SUMMARY precursors of all complex sphingolipids. Reduction of DEGS1 dihydroceramide PR:PROJECT_SUMMARY desaturase function causes pediatric neurodegenerative disorder hypomyelinating PR:PROJECT_SUMMARY leukodystrophy-18 (HLD-18). We discovered that infertile crescent (ifc), the PR:PROJECT_SUMMARY Drosophila DEGS1 homolog, is expressed primarily in glial cells to promote CNS PR:PROJECT_SUMMARY development by guarding against neurodegeneration. Loss of ifc causes massive PR:PROJECT_SUMMARY dihydroceramide accumulation and severe morphological defects in cortex glia, PR:PROJECT_SUMMARY including endoplasmic reticulum (ER) expansion, failure of neuronal PR:PROJECT_SUMMARY ensheathment, and lipid droplet depletion. RNAi knockdown of the upstream PR:PROJECT_SUMMARY ceramide synthase schlank in glia of ifc mutants rescues ER expansion, PR:PROJECT_SUMMARY suggesting dihydroceramide accumulation in the ER drives this phenotype. RNAi PR:PROJECT_SUMMARY knockdown of ifc in glia but not neurons drives neuronal cell death, suggesting PR:PROJECT_SUMMARY that ifc function in glia promotes neuronal survival. Our work identifies glia PR:PROJECT_SUMMARY as the primary site of disease progression in HLD-18 and may inform on juvenile PR:PROJECT_SUMMARY forms of ALS, which also feature elevated dihydroceramide levels. PR:INSTITUTE Washington University in St. Louis PR:DEPARTMENT Genetics, Medicine, Chemistry PR:LABORATORY Skeath and Patti Laboratories PR:LAST_NAME Cho PR:FIRST_NAME Kevin PR:ADDRESS 1 Brookings Drive, Campus Box 1134, St. Louis, MO, 63130, USA PR:EMAIL kevin.cho@wustl.edu PR:PHONE 314-935-8813 #STUDY ST:STUDY_TITLE Loss of dihydroceramide desaturase drives neurodegeneration by disrupting ST:STUDY_TITLE endoplasmic reticulum and lipid droplet homeostasis in glial cells ST:STUDY_TYPE Untargeted Metabolomics & Lipidomics ST:STUDY_SUMMARY Dihydroceramide desaturases convert dihydroceramides to ceramides, the ST:STUDY_SUMMARY precursors of all complex sphingolipids. Reduction of DEGS1 dihydroceramide ST:STUDY_SUMMARY desaturase function causes pediatric neurodegenerative disorder hypomyelinating ST:STUDY_SUMMARY leukodystrophy-18 (HLD-18). We discovered that infertile crescent (ifc), the ST:STUDY_SUMMARY Drosophila DEGS1 homolog, is expressed primarily in glial cells to promote CNS ST:STUDY_SUMMARY development by guarding against neurodegeneration. Loss of ifc causes massive ST:STUDY_SUMMARY dihydroceramide accumulation and severe morphological defects in cortex glia, ST:STUDY_SUMMARY including endoplasmic reticulum (ER) expansion, failure of neuronal ST:STUDY_SUMMARY ensheathment, and lipid droplet depletion. RNAi knockdown of the upstream ST:STUDY_SUMMARY ceramide synthase schlank in glia of ifc mutants rescues ER expansion, ST:STUDY_SUMMARY suggesting dihydroceramide accumulation in the ER drives this phenotype. RNAi ST:STUDY_SUMMARY knockdown of ifc in glia but not neurons drives neuronal cell death, suggesting ST:STUDY_SUMMARY that ifc function in glia promotes neuronal survival. Our work identifies glia ST:STUDY_SUMMARY as the primary site of disease progression in HLD-18 and may inform on juvenile ST:STUDY_SUMMARY forms of ALS, which also feature elevated dihydroceramide levels. ST:INSTITUTE Washington University in St. Louis ST:DEPARTMENT Genetics, Medicine, Chemistry ST:LABORATORY Skeath and Patti Laboratories ST:LAST_NAME Cho ST:FIRST_NAME Kevin ST:ADDRESS 1 Brookings Drive, Campus Box 1134, St. Louis, MO, 63130, USA ST:EMAIL kevin.cho@wustl.edu ST:PHONE 314-935-8813 #SUBJECT SU:SUBJECT_TYPE Insect SU:SUBJECT_SPECIES Drosophila melanogaster SU:TAXONOMY_ID 7227 #SUBJECT_SAMPLE_FACTORS: SUBJECT(optional)[tab]SAMPLE[tab]FACTORS(NAME:VALUE pairs separated by |)[tab]Raw file names and additional sample data SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_ifc_1 Genotype:Knockout | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_ifc_1.mzML SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_ifc_2 Genotype:Knockout | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_ifc_2.mzML SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_ifc_3 Genotype:Knockout | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_ifc_3.mzML SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_ifc_4 Genotype:Knockout | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_ifc_4.mzML SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_ifc_5 Genotype:Knockout | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_ifc_5.mzML SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_WT_1 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_WT_1.mzML SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_WT_2 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_WT_2.mzML SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_WT_3 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_WT_3.mzML SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_WT_4 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_WT_4.mzML SUBJECT_SAMPLE_FACTORS - WL_RPLC_POS_WT_5 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=WL_RPLC_POS_WT_5.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_ifc_1 Genotype:Knockout | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_ifc_1.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_ifc_2 Genotype:Knockout | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_ifc_2.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_ifc_3 Genotype:Knockout | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_ifc_3.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_ifc_4 Genotype:Knockout | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_ifc_4.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_ifc_5 Genotype:Knockout | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_ifc_5.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_WT_1 Genotype:Wild-type | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_WT_1.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_WT_2 Genotype:Wild-type | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_WT_2.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_WT_3 Genotype:Wild-type | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_WT_3.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_WT_4 Genotype:Wild-type | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_WT_4.mzML SUBJECT_SAMPLE_FACTORS - CNS_RPLC_POS_WT_5 Genotype:Wild-type | Sample source:CNS Chromatography=RPLC; Polarity=Positive; RAW_FILE_NAME(Raw file name)=CNS_RPLC_POS_WT_5.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_ifc_1 Genotype:Knockout | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_ifc_1.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_ifc_2 Genotype:Knockout | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_ifc_2.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_ifc_3 Genotype:Knockout | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_ifc_3.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_ifc_4 Genotype:Knockout | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_ifc_4.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_ifc_5 Genotype:Knockout | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_ifc_5.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_WT_1 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_WT_1.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_WT_2 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_WT_2.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_WT_3 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_WT_3.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_WT_4 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_WT_4.mzML SUBJECT_SAMPLE_FACTORS - WL_HILIC_NEG_WT_5 Genotype:Wild-type | Sample source:Whole Larvae Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=WL_HILIC_NEG_WT_5.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_ifc_1 Genotype:Knockout | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_ifc_1.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_ifc_2 Genotype:Knockout | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_ifc_2.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_ifc_3 Genotype:Knockout | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_ifc_3.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_ifc_4 Genotype:Knockout | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_ifc_4.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_ifc_5 Genotype:Knockout | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_ifc_5.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_WT_1 Genotype:Wild-type | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_WT_1.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_WT_2 Genotype:Wild-type | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_WT_2.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_WT_3 Genotype:Wild-type | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_WT_3.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_WT_4 Genotype:Wild-type | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_WT_4.mzML SUBJECT_SAMPLE_FACTORS - CNS_HILIC_NEG_WT_5 Genotype:Wild-type | Sample source:CNS Chromatography=HILIC; Polarity=Negative; RAW_FILE_NAME(Raw file name)=CNS_HILIC_NEG_WT_5.mzML #COLLECTION CO:COLLECTION_SUMMARY Whole larvae and dissected CNS CO:SAMPLE_TYPE Larvae #TREATMENT TR:TREATMENT_SUMMARY Untargeted lipidomics analysis was conducted on whole larva and dissected CNS of TR:TREATMENT_SUMMARY wild type and ifc-/- mutants at the late-third instar stage. Five replicates TR:TREATMENT_SUMMARY were prepared for each set of experiments. For whole larvae, at least 15 larvae TR:TREATMENT_SUMMARY of each genotype were used for each replicate. For the dissected CNS, at least TR:TREATMENT_SUMMARY 50 wild type and 60 ifc-/- CNS were used per replicate. Immediately following TR:TREATMENT_SUMMARY collection or dissection, larvae and the dissected CNS were flash frozen in TR:TREATMENT_SUMMARY liquid nitrogen and placed at -80°C. #SAMPLEPREP SP:SAMPLEPREP_SUMMARY Whole larvae and CNS samples were extracted utilizing a tissue homogenizer, SP:SAMPLEPREP_SUMMARY employing a solvent mixture of acetonitrile, methanol, and water in a 2:2:1 SP:SAMPLEPREP_SUMMARY ratio, using 40 µL per mg of wet weight. The samples were then stored at -20°C SP:SAMPLEPREP_SUMMARY overnight. Following centrifugation at 14,000 x g for 10 minutes at 4°C, the SP:SAMPLEPREP_SUMMARY supernatant was transferred into an LC/MS vial and subsequently stored at -80°C SP:SAMPLEPREP_SUMMARY until LC/MS analysis. #CHROMATOGRAPHY CH:CHROMATOGRAPHY_TYPE Reversed phase CH:INSTRUMENT_NAME Agilent 1290 Infinity II CH:COLUMN_NAME Waters ACQUITY UPLC HSS T3 (150 x 2.1mm,1.7um) CH:SOLVENT_A acetronitrile/water (60/40); 10mM ammonium formate; 2.5 uM medronic acid; 0.1% CH:SOLVENT_A formic acid CH:SOLVENT_B 2-propanol/acetonitrile (90/10); 10mM ammonium formate; 0.1% formic acid CH:FLOW_GRADIENT 0-2min: 30% B, 2-17 min: 30%-75% B, 17-20 min: 75%-85% B, 20-23 min: 85%-100% B, CH:FLOW_GRADIENT 23-26 min: 100% B CH:FLOW_RATE 250 uL/min CH:COLUMN_TEMPERATURE 60 #ANALYSIS AN:ANALYSIS_TYPE MS #MS MS:INSTRUMENT_NAME Agilent 6545 QTOF MS:INSTRUMENT_TYPE QTOF MS:MS_TYPE ESI MS:ION_MODE POSITIVE MS:MS_COMMENTS Data were collected with the following MS source settings: gas temp, 250°C; MS:MS_COMMENTS drying gas, 11 l/min; nebulizer, 35 psi; sheath gas temp, 300°C; sheath gas MS:MS_COMMENTS flow 12 l/min; capillary voltage, 3 kV; nozzle voltage, 500 V; isolation window, MS:MS_COMMENTS 1.3 Da. XCMS and Skyline software were used for data processing #MS_METABOLITE_DATA MS_METABOLITE_DATA:UNITS peak area MS_METABOLITE_DATA_START Samples WL_RPLC_POS_ifc_1 WL_RPLC_POS_ifc_2 WL_RPLC_POS_ifc_3 WL_RPLC_POS_ifc_4 WL_RPLC_POS_ifc_5 WL_RPLC_POS_WT_1 WL_RPLC_POS_WT_2 WL_RPLC_POS_WT_3 WL_RPLC_POS_WT_4 WL_RPLC_POS_WT_5 Factors Genotype:Knockout | Sample source:Whole Larvae Genotype:Knockout | Sample source:Whole Larvae Genotype:Knockout | Sample source:Whole Larvae Genotype:Knockout | Sample source:Whole Larvae Genotype:Knockout | Sample source:Whole Larvae Genotype:Wild-type | Sample source:Whole Larvae Genotype:Wild-type | Sample source:Whole Larvae Genotype:Wild-type | Sample source:Whole Larvae Genotype:Wild-type | Sample source:Whole Larvae Genotype:Wild-type | Sample source:Whole Larvae Cer 14:1;2O/18:0 2539 1702 1306 1134 1221 163138 156656 195902 150334 145579 Cer 14:1;2O/20:0 7774 12261 12775 14526 6479 477290 439178 608539 478843 494303 Cer 14:1;2O/24:0 901 2847 1161 540 2887 11305 12354 21841 13687 11877 GlcCer d14:0/18:0 100365 134469 123915 129694 99063 5511 2509 5156 6668 4267 GlcCer d14:0/20:0 103661 126464 106325 120548 90424 2245 2570 3302 988 4520 GlcCer d14:0/22:0 30591 34474 26452 35016 24122 1026 1518 1617 2841 1646 GlcCer d14:0/24:0 1793 1827 2593 1078 1240 2640 377 2383 541 483 GlcCer d14:1/18:0 6180 1396 2575 3277 995 33018 32250 38111 30040 32723 GlcCer d14:1/20:0 10806 11524 10623 9459 5023 144339 146565 191335 148590 155146 GlcCer d14:1/22:0 5333 5235 15110 13781 7845 34313 31605 48840 31520 37299 CerPE d14:1;2O/16:0 1225 3448 2089 2511 2281 23963 34361 37972 29004 23412 CerPE d14:1;2O/18:0 3732 3635 5624 4151 1647 233370 222974 273595 244334 232637 CerPE d14:1;2O/20:0 7249 12502 8836 5106 5891 840989 754192 997797 931022 900071 CerPE d14:1;2O/22:0 6442 2508 5616 4378 1573 275400 267616 425541 332398 299479 CerPE d14:1;2O/24:0 1340 1085 1575 710 1947 15425 13394 23210 20535 18356 Cer 14:0;2O/18:0 225231 271841 238559 227156 185292 6332 11910 12932 11860 22584 Cer 14:0;2O/20:0 361975 422430 356456 369652 290009 18302 22313 15952 18948 20233 Cer 14:0;2O/24:0 15141 20457 18190 16445 16142 15673 17083 13596 14833 13967 Lauroyl-CoA 1052 261 194 727 1365 1495 638 1016 954 197 DG 16:1_18:3 53399 56062 66613 68412 66731 53032 57230 78022 58183 63976 DG 18:1_18:1 1571 2009 1877 548 1024 830 926 1360 1033 487 HexCer 14:0;2O/18:0 98144 131379 119973 132086 106953 6039 4337 7149 6173 4813 HexCer 14:0;2O/20:0 104026 127213 106493 122423 94994 2887 3362 5291 1469 5170 HexCer 14:0;2O/22:0 30708 34007 27804 35140 24247 977 1734 1670 2971 1733 LPE 34:1 22361 32578 20750 23312 31643 18336 18436 22365 21414 19553 LPE 36:1 10069 17929 11919 17022 18926 7090 7170 12255 10967 10750 LPE 36:3 28229 44122 34888 42381 33915 70495 70123 93076 83564 82933 PC 13:0_22:3 1314362 1598870 1666212 1455563 1481166 1946145 1710459 2203467 1590754 1710240 PC 14:1_20:2 196222464 196930832 209794896 191190192 225072096 260763056 259043600 255970544 268000864 252894992 PC 14:1_22:4 1347526 1141266 1275375 1065861 1739153 2331949 2377635 2018458 2687774 2064507 PC 17:0_17:0 6107 11736 7561 2880 8709 6888 5140 10663 9512 6936 PC 17:2_17:2 6381440 4549062 5067670 3992019 5395265 6737375 6604490 6211731 6173156 5607513 PC 18:1_18:1 86600632 97446088 94763832 91709544 98927968 43830776 44790288 54731036 47108660 52637596 PC 18:2_18:2 44043832 45855436 50104484 46012664 57172248 83940952 87035880 83701424 90554448 76700744 PC 18:3_18:3 63963 42923 40210 42117 56327 52630 52477 46729 55551 49415 PE 10:0_26:3 7389667 9244976 8678460 9397985 9181182 7079446 7448677 9945025 7417220 8065444 PE 14:1_20:2 12411163 14255220 14680731 13835606 14847913 13743989 15016879 17594600 14583172 14314046 PE 17:0_17:0 2305 2390 610 1397 512 4211 2120 4293 3531 1373 PE 17:2_17:2 849342 1110731 1145913 910618 930480 919227 938715 1150249 862322 892576 PE 18:0_18:5 80020 90122 95601 80172 54501 102353 109459 137682 84822 125070 PE 18:1_18:1 11389602 14528517 12767815 15041810 13373325 9830555 9552743 13778338 10228266 11376493 PE 18:2_18:2 3053629 3669958 3618526 3674428 3866265 3089441 3365053 4064398 3225676 3379718 PS 18:0_18:3 902864 1125333 1128190 1119601 1152150 1040135 1118267 1365628 1152095 1104864 PS 18:1_18:1 3878848 4742158 4544501 4723632 4456198 2956109 2850513 3685518 3001412 3067448 TG 14:1_16:1_18:2 34927 43743 34741 56231 67011 68257 74264 109815 126904 81273 TG 16:0_16:0_16:1 319814 367878 434973 1174292 1832838 2642244 2770609 3354942 6302444 3408847 TG 16:0_16:1_18:2 152952 216649 183403 389298 401834 481682 481764 744421 1038342 627217 TG 16:0_18:1_18:1 341263 436413 460801 544224 614505 738139 726483 874859 1280450 858877 TG 16:1_16:1_18:2 52182 64796 56274 95309 110893 124900 131981 179737 229583 149347 TG 16:1_16:1_18:3 6804 9624 11544 10409 9378 10635 10984 14738 21594 13649 TG 16:1_18:2_18:2 15865 20502 14667 19186 15794 20847 21317 24373 24023 27160 TG 16:1_18:2_18:3 2545 1792 3187 138 2386 876 4756 2331 2337 5637 C14 Sphinganine 1017505 1192524 1204520 1042931 1408936 61559 73192 75821 89031 76388 C14 Sphinganine-1 phosphate 7183 7775 8444 6058 9905 1617 1367 1191 1628 1038 C14 Sphingosine 3460 2362 2385 511 567 128219 133645 151893 162798 127923 MS_METABOLITE_DATA_END #METABOLITES METABOLITES_START metabolite_name Cer 14:1;2O/18:0 Cer 14:1;2O/20:0 Cer 14:1;2O/24:0 GlcCer d14:0/18:0 GlcCer d14:0/20:0 GlcCer d14:0/22:0 GlcCer d14:0/24:0 GlcCer d14:1/18:0 GlcCer d14:1/20:0 GlcCer d14:1/22:0 CerPE d14:1;2O/16:0 CerPE d14:1;2O/18:0 CerPE d14:1;2O/20:0 CerPE d14:1;2O/22:0 CerPE d14:1;2O/24:0 Cer 14:0;2O/18:0 Cer 14:0;2O/20:0 Cer 14:0;2O/24:0 Lauroyl-CoA DG 16:1_18:3 DG 18:1_18:1 HexCer 14:0;2O/18:0 HexCer 14:0;2O/20:0 HexCer 14:0;2O/22:0 LPE 34:1 LPE 36:1 LPE 36:3 PC 13:0_22:3 PC 14:1_20:2 PC 14:1_22:4 PC 17:0_17:0 PC 17:2_17:2 PC 18:1_18:1 PC 18:2_18:2 PC 18:3_18:3 PE 10:0_26:3 PE 14:1_20:2 PE 17:0_17:0 PE 17:2_17:2 PE 18:0_18:5 PE 18:1_18:1 PE 18:2_18:2 PS 18:0_18:3 PS 18:1_18:1 TG 14:1_16:1_18:2 TG 16:0_16:0_16:1 TG 16:0_16:1_18:2 TG 16:0_18:1_18:1 TG 16:1_16:1_18:2 TG 16:1_16:1_18:3 TG 16:1_18:2_18:2 TG 16:1_18:2_18:3 C14 Sphinganine C14 Sphinganine-1 phosphate C14 Sphingosine METABOLITES_END #END