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Liu J, Hao Y, Wang C, Jin Y, Yang Y, Gu J, Chen X. An Optimized Isotopic Photocleavable Tagging Strategy for Site-Specific and Quantitative Profiling of Protein O-GlcNAcylation in Colorectal Cancer Metastasis. ACS chemical biology 2022 35254053
Abstract:
O-linked-β-N-acetylglucosamine (O-GlcNAc) glycosylation is a ubiquitous protein post-translational modification of the emerging importance in metazoans. Of the thousands of O-GlcNAcylated proteins identified, many carry multiple modification sites with varied stoichiometry. To better match the scale of O-GlcNAc sites and their dynamic nature, we herein report an optimized strategy, termed isotopic photocleavable tagging for O-GlcNAc profiling (isoPTOP), which enables quantitative and site-specific profiling of O-GlcNAcylation with excellent specificity and sensitivity. In HeLa cells, ∼1500 O-GlcNAcylation sites were identified with the optimized procedures, which led to quantification of ∼1000 O-GlcNAcylation sites with isoPTOP. Furthermore, we apply isoPTOP to probe the O-GlcNAcylation dynamics in a pair of colorectal cancer (CRC) cell lines, SW480 and SW620 cells, which represent primary carcinoma and metastatic cells, representatively. The stoichiometric differences of 625 O-GlcNAcylation sites are quantified. Of these quantified sites, many occur on important regulators involved in tumor progression and metastasis. Our results provide a valuable database for understanding the functional role of O-GlcNAc in CRC. IsoPTOP should be applicable for investigating O-GlcNAcylation dynamics in various pathophysiological processes.
O-GlcNAc proteins:
A0A0B4J203, A0A0C4DFX4, RBM47, E2F8, WDR27, SBNO1, CNOT1, P121B, P121C, H0YAE9, H0YHG0, H7C469, K7ELQ4, M0QZ24, PDLI1, HAX1, TAF4, BCL9, CAC1A, DDX3X, NFIB, PPP6, MA2B1, ARI1A, SOCS7, ABLM1, KMT2D, GBRD, RGRF2, TX1B3, HGS, MYPT1, SYN3, ZN609, TRI66, PDZD2, MAST4, SC16A, SET1A, CASC3, FOXP2, MOT4, P4HA2, ARPC5, CLOCK, MAFG, PER1, KDM6A, TET3, SI1L1, TGFI1, M3K7, MCA3, PRPF3, TPD54, SYNJ1, IF4G3, E41L2, WIPF1, FOXO3, TGM5, RNF13, SPY2, PLRG1, ZN207, AKAP8, CALU, ORC5, MYPT2, GANP, OGA, CCNT1, BUB1B, PLOD3, PLIN3, MOT2, MAFK, PQBP1, BRD4, TBL1X, PP1RB, NBN, MITF, SRGP2, N4BP1, ROCK2, PP6R2, CNOT3, ANR17, FLNB, NCOR1, SF3B1, REM1, CREG1, CRTAP, SYUG, CYTF, TOX4, TOX, SUN1, PCF11, AGFG2, UBE4B, CAC1H, SVIL, SC24A, SC24B, CNOT4, EYA4, ZMYM6, BAG3, LATS1, DDAH2, TXD12, ONEC2, CLPT1, ABL1, CRYAB, LMNA, TFR1, CATA, GLCM, FUCO, ALDOA, GCR, G3P, CPNS1, HSPB1, RLA2, RLA0, ITB1, K1C18, NPM, CATL1, CATB, MCR, BGLR, ITA5, NFIC, VIME, SNRPA, FGR, ATX1L, DERPC, ZN865, GLI2, MYBB, CLUS, PPAL, MPRI, PABP1, TPR, BMP3, SKIL, ENPL, PO2F1, PLAK, ATF2, ZEP1, RS2, TFE2, F261, ITB4, ZNF23, ZNF25, JUNB, ATF7, TPH1, DDX5, EGR1, SON, NELFE, ATF1, ATF6A, CADH2, ICAL, CSRP1, FLNA, RFX1, CBL, SFPQ, COF1, IF4B, GATA2, APC, DDX6, ARNT, MAP4, LYOX, HXD9, MZF1, CLIP1, 5HT1F, HXA11, ZEP2, ELF1, CTNB1, FBN1, ADDA, BASI, NU214, VGFR2, SRP14, NUP62, SYUA, VATA, CUX1, TXLNA, STAT3, LAP2A, EPS15, HELZ, MATR3, SSRA, SSRB, KI67, ATRX, MAP1B, YAP1, UTRN, STT3A, SC6A8, RFX5, SOX2, PRC2A, HSP13, NR2C2, NASP, CDK8, DHE4, YLPM1, NU153, RBP2, TAF6, MRE11, EMD, MXI1, MAP2, TOB1, PPT1, TCPQ, PAPOA, HCFC1, GDS1, AGFG1, CRIP2, NUP98, SMTN, SC24C, HIRA, ATX1, ATN1, AFAD, AF10, AF17, DSRAD, SEC13, NU107, ZN445, CSN2, RL37, WDR5, TIM10, F193A, RBM6, PITX1, IF4G2, PHC1, ADA17, KGD4, RL19, FOXK1, DAB2, RHG04, RBM10, HNRPU, SPTB2, FOXK2, RUNX1, MEF2A, SP2, SP3, PLOD1, KMT2A, TF65, IF4G1, NOTC2, TLE3, TLE4, PTN12, CALD1, MEF2C, P5F1B, GABPA, ZO1, ACK1, EP300, AHNK, FCHO2, HMGX3, SRBP2, FOXO1, ASPH, TROAP, BPTF, FSTL1, NFIA, DPYD, TP53B, FOXC1, ECH1, ROA0, DDX10, TBX2, GPS2, G3BP1, PABP4, ADAM9, PICAL, NAB1, SERC3, RIPK1, IQGA2, STIM1, CUL4B, ASPP2, CAC1S, RUNX2, NFYC, CDK13, TOB2, VEZF1, UBP2L, GIT2, SRC8, CAPR1, LAGE3, PUM1, MDC1, EPN4, TTLL4, RRP1B, NCOA6, GSE1, MEF2D, LASP1, MYPC3, ZN638, NUMA1, SART3, CND1, R3HD1, KIF14, WDR43, PLCL1, PLEC, NOMO1, NONO, RCN1, RYR3, KS6A1, RBMS2, TAF1C, SF01, MED1, JHD2C, TRIP6, T22D1, ELF2, TAB1, HERC1, NCOA1, VAS1, ZFHX3, ZYX, ADRM1, SYPL1, TAF9, DREB, DGKD, CGT, GEN, LY6K, RFX7, QSER1, AAK1, PRSR3, QRIC1, MA7D1, WDR72, TBRG1, TB10B, TPRN, FIL1L, SVEP1, AMOT, EPC2, CRTC2, PAN3, HS904, YIF1B, AG10A, IGS11, ZN628, BCORL, FIGN, K2026, SH319, TGO1, PRC2B, TOIP1, CEP78, P4R3B, HP1B3, CE170, ZN362, FKB15, AKND1, ZEP3, LRIF1, SWT1, RHG21, UBAP2, RBM26, DEP1A, OGRL1, AHDC1, F222A, RPRD2, RN220, ZN318, TASO2, ZMYM4, PAPD7, TNS2, KANK2, ARID2, USF3, RHG17, CYTSA, ANR40, BICRL, JADE1, PKHA7, NIPBL, LIN54, TET2, RINT1, CRCDL, ZNT6, TTC41, RHGBA, NFRKB, RSBNL, KCD18, NCEH1, MDEAS, ZC3HE, LARP1, NHS, CRTC3, SAS6, MCAF1, BCOR, MPRIP, DNMBP, GGYF2, THADA, BNC2, NFXL1, NBEL2, CO039, SRCAP, CBAR2, UBN2, XIRP1, RAPH1, LARP4, HAKAI, ASXL2, SPT6H, KDM3B, ZCCHV, KANL1, RGPD4, POGZ, ZFY16, NUFP2, MAVS, CLAP1, EMSY, I2BP2, SRGP1, RBBP6, SH3R1, HUWE1, YTHD3, NPM2, ILDR1, KAISO, MYPN, LDB1, LYRIC, BCL9L, LUZP1, NRAP, RTTN, PRSR1, DDX42, CEP57, CD20B, CACL1, P66A, HIPK1, KCC1D, RN135, MY18B, AHNK2, FOXP4, NAV3, NAV2, MISP, ARI3B, IPRI, TEX2, MGAP, CC28A, Z3H7A, ANKH1, SUGP1, RPAP2, MILK2, SRRM1, ZZZ3, FA71A, PHAR4, RTKN2, DCP1B, XRN1, PELP1, CKLF8, TENS4, SPART, RPTOR, NUP93, ZN687, DOCK4, RHG24, RUSC2, SYNPO, FNBP4, D2HDH, RP25L, ATPF2, CPSF7, ARFG1, ENAH, SPOT1, SUMF1, KCNH5, SLAI1, TNR6A, PHC3, DRC6, CBPC3, NAV1, VP37A, KMT2C, ZMIZ2, BD1L1, ARI1B, FLCN, NUP35, TOIP2, TNIP2, KNL1, OR2L2, PUM2, CC110, TBC15, STT3B, ZN507, ALMS1, DLG5, KCNV2, BRX1, DOT1L, GEMI5, PARD3, ZN384, SMAP2, IASPP, TM263, ZFN2B, NUDC2, PCNP, TRUB1, LMO7, ATX2L, PALLD, P66B, BBX, ZCH14, GBF1, SMG7, RTF1, NICA, PHF3, MAML1, ZN592, LAR4B, TFG, TAF4B, RREB1, SC65, CBP, SYMPK, DDX17, GPKOW, FUBP2, UBP7, LPP, LSM10, NCLN, MRTFA, FUBP1, TTC17, PBIP1, TTC28, TOM6, PF21A, INT12, REPS1, ESS2, MBD6, ELP4, SGF29, RBM33, ZN503, P121A, TONSL, PDLI5, ERO1A, DOCK6, FUBP3, RSRC1, ZN594, VCIP1, ZN462, LCOR, PDLI2, CLP1L, Z512B, ZFR, EP400, MRFL, H6ST2, TIGD1, NOL4L, DOCK7, RPR1A, RBM14, ADCYA, QKI, LENG8, TRNT1, PP1RA, PHF12, CIC, MED15, ERBIN, HMCN1, LMF1, PIGS, WRIP1, SIN3A, MINT, HTF4, EYA3, POP1, TEAD3, TTC1, CSN8, ATX2, ARI3A, ANM1, PKP2, TEP1, DPH2, WAC, DIDO1, HNRL1, RBM4, SSBP4, PRR14, SSBP3, YTHD1, KPCD2, ZCHC2, TB182, AMRA1, CE295, TANC1, ZC12C, CEP44, STRAB, SP130, BRD8, RGAP1, SMG9, APC1, I2BPL, TMX4, KI13A, WDR13, EPC1, ADNP, ZN106, TM245, FOXP1, PABP3, WNK1, E41L1, ZHX3, BICC1, PEAK1, PPR3E, ZN703, PKHA5, CLSPN, BCDO1, RC3H2, ZFYV1, TAF9B, EMAL4, ZBT20, NCOA5, TANC2, ZN532, NCK5L, TNR6C, CHD8, FBSL, APMAP, DMAP1, UBN1, DCP1A, INCE, ANLN, GEPH, PDLI7, TULP4, HOME2, SLX9, DIAP3, BMP2K, RBM12, STAU2, DDX28, CWC25, CARF, ETAA1, ABI2, HXC10, BCLF1, TAB2, CELR3, CDK12, GRHL1, SACS, ITSN2, BICRA, CNOT2, TMEM9, CAC1I, CAMP3, DAPLE, RCC2, DIP2B, MBD5, CT2NL, F135A, KANL3, RERE, SE1L1, TRM7, YM012, KDM5B, LIMD1, TCF20, SUN2, LIMA1, SEPT9, UBQL2, TRPS1, S30BP, NRBP, BAZ2B, SIX4, HOOK1, CDC23, TASOR, GMEB2, TNIK, PARP4, NUP50, ZHX1, CDV3, MCTS1, KCNH3, LRFN2, MRTFB, ZBT21, PRR12, YETS2, HECD1, PKCB1, NOTC3, SPAT2, SOX13, G3BP2, MAGD2, MINP1, MACF1, CP131, SCAF8, TRI33, PHF8, LIMC1, TNR6B, SRRM2, SCML2, ZN148, POLH, INVS, ICE1, R3HD2, MAN1, TR150, WBP11, ZN281, STA13, WNK2, HBS1L, ARIP4, MTCL1, DCAF1, RPGF2, IRS2, CRBG1, HYOU1, SAM50, PRC2C, YTHD2, NCOR2, GMEB1, DC1L1, EPN1, NCOA3, ZHX2, S23IP, U3KPZ7, V9GYH0
Species: Homo sapiens
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Xu S, Sun F, Wu R. A Chemoenzymatic Method Based on Easily Accessible Enzymes for Profiling Protein O-GlcNAcylation. Analytical chemistry 2020 92(14) 32574038
Abstract:
O-GlcNAcylation has gradually been recognized as a critically important protein post-translational modification in mammalian cells. Besides regulation of gene expression, its crosstalk with protein phosphorylation is vital for cell signaling. Despite its importance, comprehensive analysis of O-GlcNAcylation is extraordinarily challenging due to the low abundances of many O-GlcNAcylated proteins and the complexity of biological samples. Here, we developed a novel chemoenzymatic method based on a wild-type galactosyltransferase and uridine diphosphate galactose (UDP-Gal) for global and site-specific analysis of protein O-GlcNAcylation. This method integrates enzymatic reactions and hydrazide chemistry to enrich O-GlcNAcylated peptides. All reagents used are more easily accessible and cost-effective as compared to the engineered enzyme and click chemistry reagents. Biological triplicate experiments were performed to validate the effectiveness and the reproducibility of this method, and the results are comparable with the previous chemoenzymatic method using the engineered enzyme and click chemistry. Moreover, because of the promiscuity of the galactosyltransferase, 18 unique O-glucosylated peptides were identified on the EGF domain from nine proteins. Considering that effective and approachable methods are critical to advance glycoscience research, the current method without any sample restrictions can be widely applied for global analysis of protein O-GlcNAcylation in different samples.
O-GlcNAc proteins:
SBNO1, CNOT1, SWAHB, P121C, PDLI1, TAF4, RNT2, PODXL, KMT2D, MYPT1, ZN609, SC16A, SET1A, ZN185, TNC18, PRPF3, TPD54, SYNJ1, PLIN3, MAFK, BRD4, N4BP1, ICOSL, ANR17, ZN217, NCOR1, ATRN, TOX4, ERLN2, AGFG2, VAPB, SC24A, SC24B, CNOT4, BAG3, LMNA, GCR, HSPB1, IF2A, K1C18, K2C8, K1C19, ROA1, TACD2, ATX1L, LYAG, PPAL, TPR, K1C13, ZEP1, SDC1, ATF1, CBL, GATA3, ARNT, MAP4, CLIP1, HXC9, NU214, MP2K2, CUX1, PBX2, MLH1, STAT3, LAP2A, KI67, RFX5, SOX2, NU153, RBP2, TAF6, HCFC1, AFF3, AGFG1, ATX1, AF17, DSRAD, FOXA1, NU107, FOXK1, SPTB2, TFAP4, EWS, SP2, KMT2A, IF4G1, NOTC2, TLE3, TLE4, REL, ACK1, LG3BP, AHNK, ARHG5, FOXO1, BPTF, RIPK1, NFYC, CDK13, UBP2L, LAGE3, MDC1, EPN4, RRP1B, NCOA6, GSE1, MEF2D, NUMA1, R3HD1, JHD2C, TRIP6, ELF2, TAB1, ZFHX3, ZYX, ADRM1, TAF9, RFX7, QSER1, QRIC1, TB10B, CRTC2, PRC2B, ZN362, UBAP2, RPRD2, ZN318, TASO2, ARID2, ANR40, BICRL, ABLM2, GRHL2, NIPBL, LIN54, TET2, NFRKB, KCD18, MDEAS, ZC3HE, FIP1, SAS6, MCAF1, BCOR, HAKAI, SPT6H, KDM3B, POGZ, MAVS, EMSY, RAI1, SRGP1, SH3R1, YTHD3, CASZ1, P66A, I2BP1, RB6I2, FOXP4, NAV2, GID4, MGAP, CDAN1, SUGP1, MILK2, NUP93, ZN687, FNBP4, ARFG1, ENAH, PHC3, SP20H, KMT2C, STT3B, DLG5, WIPF2, ZFN2B, LMO7, ATX2L, CSKI2, P66B, SMG7, CBP, SEM4D, FUBP2, LPP, PF21A, INT12, CERS2, GWL, PDLI5, CHAP1, ANCHR, Z512B, ZFR, EP400, RBM14, CIC, MINT, S29A1, DPH2, WAC, DIDO1, HNRL1, YTHD1, CEP44, SP130, I2BPL, FOXP1, WNK1, E41L1, ZHX3, GORS2, PKHA5, RC3H2, TAF9B, NCOA5, TANC2, CELR2, UBN1, PDLI7, RBM12, CARF, TAB2, CNOT2, KANL3, STAP2, TCF20, UBQL2, S30BP, SIX4, TASOR, GMEB2, ZHX1, YETS2, PKCB1, NOTC3, TRI33, SRRM2, CHM2B, SCML2, POLH, R3HD2, ZN281, WNK2, PRC2C, NCOR2, GMEB1, ZHX2
Species: Homo sapiens
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Berthier A, Vinod M, Porez G, Steenackers A, Alexandre J, Yamakawa N, Gheeraert C, Ploton M, Maréchal X, Dubois-Chevalier J, Hovasse A, Schaeffer-Reiss C, Cianférani S, Rolando C, Bray F, Duez H, Eeckhoute J, Lefebvre T, Staels B, Lefebvre P. Combinatorial regulation of hepatic cytoplasmic signaling and nuclear transcriptional events by the OGT/REV-ERBα complex. Proceedings of the National Academy of Sciences of the United States of America 2018 115(47) 30397120
Abstract:
The nuclear receptor REV-ERBα integrates the circadian clock with hepatic glucose and lipid metabolism by nucleating transcriptional comodulators at genomic regulatory regions. An interactomic approach identified O-GlcNAc transferase (OGT) as a REV-ERBα-interacting protein. By shielding cytoplasmic OGT from proteasomal degradation and favoring OGT activity in the nucleus, REV-ERBα cyclically increased O-GlcNAcylation of multiple cytoplasmic and nuclear proteins as a function of its rhythmically regulated expression, while REV-ERBα ligands mostly affected cytoplasmic OGT activity. We illustrate this finding by showing that REV-ERBα controls OGT-dependent activities of the cytoplasmic protein kinase AKT, an essential relay in insulin signaling, and of ten-of-eleven translocation (TET) enzymes in the nucleus. AKT phosphorylation was inversely correlated to REV-ERBα expression. REV-ERBα enhanced TET activity and DNA hydroxymethylated cytosine (5hmC) levels in the vicinity of REV-ERBα genomic binding sites. As an example, we show that the REV-ERBα/OGT complex modulates SREBP-1c gene expression throughout the fasting/feeding periods by first repressing AKT phosphorylation and by epigenomically priming the Srebf1 promoter for a further rapid response to insulin. Conclusion: REV-ERBα regulates cytoplasmic and nuclear OGT-controlled processes that integrate at the hepatic SREBF1 locus to control basal and insulin-induced expression of the temporally and nutritionally regulated lipogenic SREBP-1c transcript.
O-GlcNAc proteins:
A4D111, POTEF, A5GZ75, AXA2L, P121C, A9Z0R7, EIFCL, C3UMV2, F1JVV5, I6TRR8, MYO1C, IF2B3, DDX3X, TCRG1, OPLA, XPO1, SC16A, SET1A, OGT1, EIF3D, DDX3Y, DHX15, PRP4, SERA, PSMD3, HNRPR, ACTN4, MYO1B, AKAP8, HNRPQ, UGDH, USO1, WDR1, ANR17, GGCT, LX12B, FLNB, PR40A, SF3B1, SPB7, NU155, KRT38, SC24D, GLSK, SC31A, ELP1, SMC2, AGM1, UTS2, BAG4, SC24A, SC24B, AP2A1, LDHA, AL1A1, PGK1, A2MG, CO3, CYTA, KV117, IGHG1, IGHA1, APOE, APOC2, FIBG, TFR1, TRFE, CATA, ALDOA, TBB4A, G3P, HSPB1, RPN1, RPN2, AT1A1, ARGI1, ALDH2, S10A8, ADT2, GELS, ATPB, APOA4, ENOA, PYGL, G6PI, TPM3, PDIA1, CATD, ANXA2, CAN1, TBB5, HS90A, SP1, CO1A2, HS90B, PO2F2, GSTP1, VILI, ANXA4, PARP1, LKHA4, ATX1L, POTEI, UBB, UBC, SAA2, HS71A, HS71B, IGG1, TBA3C, TBA3D, THIO, CH60, BIP, HSP7C, PYGB, PYGM, G6PD, PYC, C1TC, NFH, IMDH2, XRCC6, XRCC5, AT1A3, EF2, PDIA4, P4HA1, ENOB, GFAP, ENPL, IDE, PO2F1, HNRPL, PLAK, DESP, AT2A2, HSP76, DDX5, LEG3, TCPA, RL7, VINC, E2AK2, ITIH2, ANXA7, HNF1A, FILA, CD11B, FLNA, VDAC1, TGM2, PUR2, UBA1, NDKB, TGM1, EST1, SFPQ, SAHH, MCM3, ATPA, PTBP1, SYVC, ABCD3, GRN, TKT, SPB3, AL4A1, PDIA3, KPYR, RPB2, AKT1, PUR9, HNRH1, CASPE, 1433S, S10AB, PRDX2, MCM4, MCM7, HS71L, CTNB1, IRS1, GDE, MYH9, FUS, SPB5, NUP62, TALDO, GRP75, CAPG, TCPZ, STAT3, MDHC, MDHM, ECHA, GARS, SYIC, HUTH, LPPRC, MATR3, MSH2, VDAC2, SYQ, LEG7, COPD, SPB4, TCPE, AL9A1, LMAN1, FMO5, TCPG, SYAC, RBM25, KLK7, DYN2, TCPQ, TCPD, RAB7A, HCFC1, KS6A3, HNRPM, HXK2, CAZA1, NUP98, ACLY, COPB, COPA, SC24C, SYRC, SYYC, UBP14, HSP72, P5CS, XPO2, TERA, MTP, AF17, PSA, HNRH2, EIF3B, SYMC, NU107, EPIPL, TPIS, ACTB, IF4A1, HNRPK, 1433G, PRS4, ACTA, H4, RS27A, RL40, 1433Z, RACK1, ACTG, ACTH, ACTC, ACTS, TBA1B, TBA4A, TBB4B, PRKDC, DCD, VIGLN, CLH1, HNRPU, FABP5, MSHR, EWS, SEMG2, DSG1, SP3, PLOD1, EF1A2, GFPT1, PRDX1, KHDR1, TGM3, DHX9, LG3BP, DSC1, ILF3, TRAP1, PAK2, PSMD2, PABP4, PICAL, PKP1, BLMH, SNTB1, TBB2A, VEZF1, TRI29, UBP2L, LY6D, SRC8, PDIA5, HS902, EPN4, SMC1A, GANAB, MVP, PLEC, NONO, SC23A, SC23B, CDSN, JHD2C, CYTM, DPYL2, PCKGM, TKFC, Q53G76, Q58FF2, Q59EA0, ZN326, FILA2, UBAP2, XP32, RBM26, EF1A3, ARID2, TBA3E, POTEE, SBSN, FBX50, Q70T18, Q71E78, TBA1A, SND1, NUP54, MYH14, PEG10, PRP39, TAXB1, CAND1, CARM1, PRSR1, SPA12, ANKH1, ASXL1, NUP93, RDHE2, Q8N6B4, PDPR, TNR6A, COP1, PDC6I, POF1B, ATX2L, DDX1, BAP1, TFG, RBP56, EVPL, DDX17, RENT1, FUBP2, UBP7, NCLN, H2B1A, WNK4, ZC3HA, SCYL1, SPB12, GSDMA, VPS35, PHF12, CIC, STRBP, VAT1, NUP88, ATX2, CPNE1, TCPH, TBA1C, DIDO1, HNRL1, TBB2B, NUP58, ACTBM, TB182, SP130, WNK1, AGO3, MCCB, MOV10, TNR6C, S10AE, DD19A, ATD3A, TBA8, UGGG1, IF2B1, CALL5, RRBP1, NXF1, CMC2, PO2F3, AGO2, AGO1, Q9UL79, ACSL5, DD19B, TNR6B, CD11A, EIF3L, SYFA, KLK5, RTCB, WNK2, PKP3, HYOU1, SNX9, COPG1, IF2B2, S23IP
Species: Homo sapiens
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Wang S, Yang F, Petyuk VA, Shukla AK, Monroe ME, Gritsenko MA, Rodland KD, Smith RD, Qian WJ, Gong CX, Liu T. Quantitative proteomics identifies altered O-GlcNAcylation of structural, synaptic and memory-associated proteins in Alzheimer's disease. The Journal of pathology 2017 243(1) 28657654
Abstract:
Protein modification by O-linked β-N-acetylglucosamine (O-GlcNAc) is emerging as an important factor in the pathogenesis of sporadic Alzheimer's disease (AD); however, detailed molecular characterization of this important protein post-translational modification at the proteome level has been highly challenging, owing to its low stoichiometry and labile nature. Herein, we report the most comprehensive, quantitative proteomics analysis for protein O-GlcNAcylation in postmortem human brain tissues with and without AD by the use of isobaric tandem mass tag labelling, chemoenzymatic photocleavage enrichment, and liquid chromatography coupled to mass spectrometry. A total of 1850 O-GlcNAc peptides covering 1094 O-GlcNAcylation sites were identified from 530 proteins in the human brain. One hundred and thirty-one O-GlcNAc peptides covering 81 proteins were altered in AD brains as compared with controls (q < 0.05). Moreover, alteration of O-GlcNAc peptide abundance could be attributed more to O-GlcNAcylation level than to protein level changes. The altered O-GlcNAcylated proteins belong to several structural and functional categories, including synaptic proteins, cytoskeleton proteins, and memory-associated proteins. These findings suggest that dysregulation of O-GlcNAcylation of multiple brain proteins may be involved in the development of sporadic AD. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.