REFERENCES


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Wu JL, Chiang MF, Hsu PH, Tsai DY, Hung KH, Wang YH, Angata T, Lin KI. O-GlcNAcylation is required for B cell homeostasis and antibody responses. Nature communications 2017 8(1) 29187734
Abstract:
O-linked N-acetylglucosamine (O-GlcNAc) transferase (Ogt) catalyzes O-GlcNAc modification. O-GlcNAcylation is increased after cross-linking of the B-cell receptor (BCR), but the physiological function of this reaction is unknown. Here we show that lack of Ogt in B-cell development not only causes severe defects in the activation of BCR signaling, but also perturbs B-cell homeostasis by enhancing apoptosis of mature B cells, partly as a result of impaired response to B-cell activating factor. O-GlcNAcylation of Lyn at serine 19 is crucial for efficient Lyn activation and Syk interaction in BCR-mediated B-cell activation and expansion. Ogt deficiency in germinal center (GC) B cells also results in enhanced apoptosis of GC B cells and memory B cells in an immune response, consequently causing a reduction of antibody levels. Together, these results demonstrate that B cells rely on O-GlcNAcylation to maintain homeostasis, transduce BCR-mediated activation signals and activate humoral immunity.
O-GlcNAc proteins:
FAIM3, BLTP1, BCORL, M3K15, KANL3, EXC6B, PLHD1, CTTB2, MYO1E, SCLT1, TAF4B, TCOF, FLOT1, OXLA, HDAC1, SYPL1, SEM4D, MA2B1, PPE2, PLD3, DPOD2, NOCT, HNRH1, API5, DFFA, MMP8, DPM1, EIF3D, ESS2, CTNL1, VTI1B, S28A2, FA5, CO4B, IGKC, LAC1, IGHA, IGHDM, HA11, LAMC1, TBA1B, LDHA, HVM51, SPTA1, ZFP1, EGR1, ENPL, RPB1, ITB1, ENV1, 4F2, HS90B, HA2B, HB2A, CD44, BLK, CN37, LAMP2, ZFP37, PTBP1, HB2I, BASI, FAS, EVI2A, MDR1A, BGAL, ITAL, LYN, TLN1, MOES, U2AF2, MAP4, GNA13, RL3, CATG, DPP4, PTN6, HEXA, NKTR, HMGB2, SUH, CEAM1, GTR3, DRG1, RAB5C, CD22, FMR1, VGFR1, GRP75, CAP1, ECI1, FOXK1, STAT1, NKX25, TCPQ, H11, H13, IL12B, CAPZB, RL5, VDR, RET3, ADCY7, VA0D1, AAAT, IMA1, STOM, FUS, NICA, RU2A, EF2, AAAS, RUVB1, ABCE1, DCAF7, 1433G, ACTA, RS6, VATB2, RL23, RL8, PP2BA, RACK1, TBB4B, M4K1, ITPR3, SURF6, ELAV1, EVL, H2B1A, AT8A1, TCPH, TCPB, NXN, TBB5, HNRL2, CREB1, PLAK, 3MG, CO6A1, LG3BP, COE1, CNN2, NSUN2, HMHA1, SNUT2, SMCA4, TPC10, TGRM2, I20L2, LMF1, PUF60, ZSWM8, PRRC1, SC31A, CPZIP, ITAD, ULK4, ITA1, DYHC2, LIN54, JKIP3, GRHL3, MYO1G, SIN3A, IRAG2, SAMH1, KHDR1, LY75, RASA3, NPT2A, CAPR1, ARHG2, PML, IMA5, LAP2B, PRP4B, M4K2, TS101, PLSL, CTNA2, VSX2, CD37, SERA, PCBP2, TIF1B, COCH, NUP62, RALY, UT14A, ARG39, CLH1, ATS16, F120A, NOP58, TEDC2, U520, RRP12, SMHD1, ANO6, TTBK1, CHD4, SARM1, NUP98, RASL2, TNKS1, AT1A2, NFRKB, DDX55, DNA2, H2B1C, CMYA5, GIMA8, CYFP1, SPAG5, HNRPQ, RPF1, MBB1A, PRC2A, ADCY2, MOGS, SDA1, FA98B, WIPI2, TRRAP, XYLT1, WDR82, GNS, ERLN2, S38A9, WASF2, S2512, NIM1, TBL1R, ZN526, CARF, HES7, UNC80, RBGPR, ECHA, ELMO1, ATOSB, KMT2C, FLNA, TPC2, RBBP5, POGZ, DOC10, SYFA, SMKZ, COR2A, RBM14, DOCK2, CASP9, RAE1L, NUP88, RPB2, UACA, SYEP, P66A, VPS50, COPA, VWF, TXTP, ZN536, LMBD1, R4RL1, C2D1A, URP2, STX5, GT251, SDHA, PO121, ABLM1, COL12, ALAT1, RORB, PDLI2, ERO1B, CD177, PSPC1, NUP58, STAB2, LRC8C, COX18, MAVS, PLBL1, UN93B, EVI2B, MYH9, ESIP1, VIGLN, PSMD2, HNRL1, CCAR2, SP7, RECQ5, SFXN3, IF4A3, RINI, DDX1, UBAP2, S15A4, DNJC9, MASP2, UXS1, CSCL1, BMP2K, CYRIB, SYDC, C1TC, GLYR1, PDIA6, CIC, S12A6, ATAD3, MYO5A, MCLN1, ABEC3, STML2, SFXN1, PRP19, TARA, MCRS1, RTCB, NDUS5, S12A9, SF3B1, ANR17, NU155, TR34A, BAP1, PRP8, NUDC2, TSN31, RN138, RTRAF, RU2B, YETS4, M2OM, MIC19, SNX2, DDX28, CXXC1, RUSD4, ILF2, CHTOP, LUC7L, DIM1, MCES, SEC13, SP2, NOP56, U2AF1, EF1G, MCEM1, EVPL, PRP4, CMTR1, WWP2, DHB11, PESC, TLR9, IRX6, KRT81, RBP2, AFF4, KAT2B, STK3, NUP50, DDX21, ACINU, SIGIR, ZN207, SLAF1, SON, H2AY, MTA2, SAE1, MYO1C, RUVB2, TRPV2, PFKAP, ARC1B, ASAH1, VAPA, EHD1, IF2G, CLIC1, HNRPF
Species: Mus musculus
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Xu Q, Yang C, Du Y, Chen Y, Liu H, Deng M, Zhang H, Zhang L, Liu T, Liu Q, Wang L, Lou Z, Pei H. AMPK regulates histone H2B O-GlcNAcylation. Nucleic acids research 2014 42(9) 24692660
Abstract:
Histone H2B O-GlcNAcylation is an important post-translational modification of chromatin during gene transcription. However, how this epigenetic modification is regulated remains unclear. Here we found that the energy-sensing adenosine-monophosphate-activated protein kinase (AMPK) could suppress histone H2B O-GlcNAcylation. AMPK directly phosphorylates O-linked β-N-acetylglucosamine (O-GlcNAc) transferase (OGT). Although this phosphorylation does not regulate the enzymatic activity of OGT, it inhibits OGT-chromatin association, histone O-GlcNAcylation and gene transcription. Conversely, OGT also O-GlcNAcylates AMPK and positively regulates AMPK activity, creating a feedback loop. Taken together, these results reveal a crosstalk between the LKB1-AMPK and the hexosamine biosynthesis (HBP)-OGT pathways, which coordinate together for the sensing of nutrient state and regulation of gene transcription.
O-GlcNAc proteins:
AAPK2, H2B1A
Species: Homo sapiens, Mus musculus
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