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Yu SB, Wang H, Sanchez RG, Carlson NM, Nguyen K, Zhang A, Papich ZD, Abushawish AA, Whiddon Z, Matysik W, Zhang J, Whisenant TC, Ghassemian M, Koberstein JN, Stewart ML, Myers SA, Pekkurnaz G. Neuronal activity-driven O-GlcNAcylation promotes mitochondrial plasticity. Developmental cell 2024 38843836
Abstract:
Neuronal activity is an energy-intensive process that is largely sustained by instantaneous fuel utilization and ATP synthesis. However, how neurons couple ATP synthesis rate to fuel availability is largely unknown. Here, we demonstrate that the metabolic sensor enzyme O-linked N-acetyl glucosamine (O-GlcNAc) transferase regulates neuronal activity-driven mitochondrial bioenergetics in hippocampal and cortical neurons. We show that neuronal activity upregulates O-GlcNAcylation in mitochondria. Mitochondrial O-GlcNAcylation is promoted by activity-driven glucose consumption, which allows neurons to compensate for high energy expenditure based on fuel availability. To determine the proteins that are responsible for these adjustments, we mapped the mitochondrial O-GlcNAcome of neurons. Finally, we determine that neurons fail to meet activity-driven metabolic demand when O-GlcNAcylation dynamics are prevented. Our findings suggest that O-GlcNAcylation provides a fuel-dependent feedforward control mechanism in neurons to optimize mitochondrial performance based on neuronal activity. This mechanism thereby couples neuronal metabolism to mitochondrial bioenergetics and plays a key role in sustaining energy homeostasis.
O-GlcNAc proteins:
A0A096MIX2, A0A0G2JUA5, IQEC1, A0A0G2JUI5, A0A0G2JUT7, A0A0G2JVC2, A0A0G2JVU1, A0A0G2JVW3, A0A0G2JVZ6, A0A0G2JW69, A0A0G2JWG6, A0A0G2JWK6, A0A0G2JXD0, A0A0G2JXD6, A0A0G2JXE4, TRI46, A0A0G2JXZ9, A0A0G2JY48, A0A0G2JY73, A0A0G2JYE0, A0A0G2JYI7, A0A0G2JYU3, A0A0G2JZ52, A0A0G2JZ94, A0A0G2JZA1, A0A0G2JZA7, A0A0G2JZB7, A0A0G2JZH9, A0A0G2JZX5, A0A0G2K0W3, ABCA3, A0A0G2K2B5, A0A0G2K2Y2, A0A0G2K315, A0A0G2K3H2, A0A0G2K459, A0A0G2K490, A0A0G2K548, A0A0G2K5E4, A0A0G2K5L1, GHC1, A0A0G2K618, A0A0G2K654, A0A0G2K6F2, A0A0G2K6T9, A0A0G2K719, A0A0G2K782, A0A0G2K7L2, A0A0G2K7P9, A0A0G2K847, A0A0G2K8I5, A0A0G2K8S6, A0A0G2K929, A0A0G2K999, A0A0G2K9J0, A0A0G2KAE2, A0A0G2KBB9, A0A0H2UHM7, A0A0U1RS25, A0A140TAA1, NUMBL, PBIP1, A5I9F0, ROA2, H2AJ, B0BN30, B0BNK1, LRFN3, B0K026, FLRT3, B1H2A6, B1WC18, ACAD9, BRSK1, B2GUY8, B2GV74, PTPRE, B2RYB1, B2RYC9, B2RYD7, CTL2, B5DEJ9, TTC17, B5DEZ8, SNPH, B5DFC3, D3Z981, D3Z9D0, D3Z9L0, D3ZA31, ATPK, D3ZAG0, LRRT3, D3ZB81, D3ZBM3, D3ZC55, D3ZC56, D3ZC81, D3ZCT7, D3ZD23, D3ZD73, D3ZDX5, D3ZE26, D3ZEH1, SIDT2, D3ZEI4, D3ZEK5, D3ZES7, D3ZFQ8, D3ZFT1, D3ZG43, D3ZH14, D3ZH36, D3ZH41, D3ZHA1, D3ZHG3, D3ZHL1, MACF1, D3ZK41, D3ZKV7, D3ZLE2, D3ZMJ7, D3ZN27, HCFC1, D3ZN99, D3ZPJ0, D3ZPN0, PLXA3, D3ZQ57, TRIM2, D3ZQM3, D3ZQN7, D3ZRH1, D3ZRN3, D3ZSY8, D3ZT20, D3ZT36, D3ZT47, D3ZTG3, D3ZTL0, D3ZTW6, D3ZU13, D3ZUJ8, D3ZUM4, D3ZUY8, D3ZW09, D3ZW15, D3ZW19, D3ZWP6, D3ZWQ0, D3ZXQ2, D3ZXX3, D3ZYD7, D3ZYM4, D3ZYR4, D3ZYS7, D3ZZK3, D3ZZU4, D4A062, D4A0A1, D4A1G8, LRFN5, D4A2H4, D4A2I9, D4A2Q3, D4A3H5, D4A3L3, D4A3N4, D4A435, D4A507, D4A517, D4A567, D4A5F1, D4A5I4, D4A5X7, D4A604, D4A628, D4A644, LRRT1, D4A6G2, D4A6H8, MGLYR, D4A6T9, D4A732, D4A758, D4A7M0, D4A7Y4, D4A831, D4A833, D4A885, D4A8N1, D4A9F4, D4A9U6, D4AA63, D4AA77, D4ABA9, D4ABI7, LRFN4, D4ACK1, PCD16, D4AD89, D4ADS4, D4ADU2, D4AE63, D4AEB3, E9PT51, E9PT53, E9PT92, E9PTA4, E9PTR4, F1LM47, F1LMW0, F1LNL3, F1LP13, F1LPD7, F1LPJ1, F1LPV0, F1LR12, F1LS01, F1LT36, F1LUC0, F1LUT4, F1LUZ4, F1LV44, F1LVL5, S2512, F1LXC7, F1LXD6, F1LYJ8, FARP1, F1LZ38, F1LZB7, F1M049, F1M1E4, F1M2D4, F1M2E9, F1M2K6, F1M3H3, F1M3J7, F1M3P6, F1M3T8, F1M4B6, F1M4J1, F1M5G8, F1M6P8, F1M853, F1M8K0, F1M949, F1MA42, F1MA97, F1MAK3, F1MAP4, F1MAS4, F7EL93, F7EYB9, F7F3I7, G3V667, G3V6K6, G3V6N7, G3V6U3, G3V728, G3V765, G3V7D4, G3V7K5, G3V7N0, G3V7V3, G3V824, G3V881, G3V886, G3V8D0, LRP1, PGLT1, M0R4G0, M0R557, RN157, M0R5P8, M0R5T4, M0R6E0, M0R715, M0R757, M0R7B4, M0R868, M0R9U3, M0RAP5, M0RB22, M0RC17, M0RDA4, MARK1, MARK2, SYT11, DCLK1, CD166, CTND2, NRP2, ACSL4, NPTXR, ENTP2, C1QBP, DNJA2, PICAL, SEM6B, TRIM3, ANK3, CELR3, SLIT1, SLIT3, VKGC, PACS1, BSN, GABR2, PTN23, AGRL1, AGRL2, CATB, OX2G, ROA1, ENOA, G3P, GNAI2, AT1A1, AT1A2, AT1A3, BIP, GDN, RPN1, AT1B1, CPSM, SYPH, KCC2B, SYN1, MAP1S, LRFN1, LRC4B, ATPB, KCC2A, CLH1, AT2B1, AT2B2, AT2A2, KCC2G, SUCA, RS14, NCAM1, AT1B2, PRIO, LAMP1, INSR, MTAP2, MAP1B, GBRB1, KCC2D, H14, ATPA, S25A3, SPTN1, ABCD3, LAMP2, RL9, RL35, THIL, GSK3B, RL27A, AP2A2, GBRG2, CSK21, GRIA1, GRIA2, GRIA3, GRIA4, AT5F1, NFL, GNAZ, RLA0, GBRA5, GBRA3, CNR1, PPAL, PGFRA, EDNRB, SYT1, PERI, AINX, GBRA2, RL17, RS5, IGF1R, CATD, AKAP5, EAA1, RPN2, VPP1, AGRIN, KAPCA, RS2, DCTN1, TCPA, SC6A9, BDH, RS9, SERPH, ITPR1, PLEC, PFKAL, VIME, ATP5H, GRM2, GRM3, GRM4, GRM5, EAA2, S6A11, EZRI, TXTP, CPT1A, QCR2, HS90B, MAP1A, GRM7, ATPG, NMDZ1, DYHC1, MPC2, ANPRC, GRIK2, GRIK3, DPP6, GFAP, PFKAM, PFKAP, SYT5, DPYL2, NPTX1, S1PR1, GRP75, ITB1, RS3A, AP1B1, MOT1, P4HA1, CACB1, CA2D1, GBB2, AT12A, EPHA5, NCAN, PGCB, OGT1, IDHP, GNAO, ACTB, ARF3, STXB1, HNRPK, 1433G, RS7, PP1B, RS16, 1433E, RS23, RS13, RS11, EF1A1, RS4X, RL23A, RS6, H4, GBRA1, RAN, RL23, RS24, RS3, RL32, RL11, AP2B1, RS27A, RL40, HSP7C, CYH2, DNJA1, GBRB3, GBRB2, ACTC, TBA1A, NEUA, TBB5, APC, MFGM, NUP54, FOLH1, IF2G, RL24, ENPP5, AP2M1, H33, RMXRL, STIM1, TBB2A, MDGA1, EFTU, PURA, MET, CNTN5, NPTN, GPAT1, NEO1, LCAP, KC1A, NFASC, NRCAM, M2OM, SHPS1, CD47, CNTP1, S27A1, DHB4, CSPG4, NMDE2, CAC1B, SV2A, PTPRA, NTRK3, TENR, L1CAM, ADT1, KC1D, ATPO, TGFB2, NRX3A, CAC1E, ADT2, MYPT1, ADA10, K2C8, Q14U74, KINH, Q32KJ5, MIC60, ATAD3, TBB2B, LONP2, AMZ2, LRFN2, Q498C9, DJC10, CARM1, K2C6A, TBB3, MACOI, S39A6, RBMX, Q4V8H7, LRC8A, Q505J7, SYFA, S2551, ZFR, PGAM5, Q566E4, NOE2, NDUA9, ARHG2, PLD3, NONO, FA98A, RM16, CAPR1, DCLK2, PMGT2, NSDHL, ITM2C, LRC59, DRS7B, Q5RK08, Q5U2P5, Q5U302, LRC8D, KIF2B, Q5XIA6, ECSIT, TBA4A, Q5XIH3, EPDR1, TMX2, MGRN1, ECHB, NOE1, GSLG1, NMDE4, PTPRZ, SYT7, KC1G3, FPRP, Q62797, CNTN4, GGH, NLGN2, NLGN3, NELL2, DPYL1, DPYL3, ERBB4, SCNAA, CAMKV, Q63116, CNTN1, GRIK5, PHLB1, MYO9B, NRX1A, NRX2A, MAP6, NTRK2, HYOU1, S12A5, SFXN1, OST48, NDUS2, DDX1, TECR, ECHA, AT1A4, AT2B4, PTPRF, PTPRS, PACC1, FACR1, C2D1A, ENPL, NDUS1, S12A9, TBA3, SIR5, SIAT9, HEXB, Q6AY21, SCPDL, Q6AYI1, Q6AYM8, RTCB, ABD12, K1C15, K1C10, K2C4, K2C1B, K22E, K2C73, K2C1, TS101, PRC2A, ABHGA, PLAK, Q6P3V8, TCPG, MEST, K2C5, DAB2P, Q6P762, LYAG, DHB12, TBB4B, RL10, DPP10, GNA13, KIF5A, ROA3, RS27, PGAP1, PCDA4, ANR46, 4F2, PLPR3, PLPR4, SSRA, QCR8, R4RL2, T132A, SE1L1, MAST1, TFB1M, RB6I2, SFXN5, CA2D3, AGAP2, NICA, SGPL1, Q8CJE3, BRNP2, ERC2, AGRG1, L2GL1, LGI1, Q8R490, TIP, FAT3, AFAP1, MARK3, CCG8, KHDR1, BRNP1, TFR1, ATRN, CLAP2, RTN4R, Q99PS2, PABP1, XYLT1, SO1C1, KDIS, TPP1, CSPG2, DCX, PSD1, ABCA2, CBPD, SFXN3, WNK1, RIMS1, RIMS2, CHD8, HNRPD, HCN4, HCN3, HCN2, HCN1, PCLO, TAOK2, SYGP1, NRP1, SRCN1, MEGF8, CELR2, S22AN, PDZD2, CXAR, TEN2, PODXL, CTNB1, SHAN1, KIF2A, SLIT2, NEGR1, GABR1, FADS2, TMM33, AGRL3, RPGF4, FLOT1, MYO9A, CADH2, HOME1, DHCR7
Species: Rattus norvegicus
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Sacoman JL, Dagda RY, Burnham-Marusich AR, Dagda RK, Berninsone PM. Mitochondrial O-GlcNAc Transferase (mOGT) Regulates Mitochondrial Structure, Function, and Survival in HeLa Cells. The Journal of biological chemistry 2017 292(11) 28100784
Abstract:
O-Linked N-acetylglucosamine transferase (OGT) catalyzes O-GlcNAcylation of target proteins and regulates numerous biological processes. OGT is encoded by a single gene that yields nucleocytosolic and mitochondrial isoforms. To date, the role of the mitochondrial isoform of OGT (mOGT) remains largely unknown. Using high throughput proteomics, we identified 84 candidate mitochondrial glycoproteins, of which 44 are novel. Notably, two of the candidate glycoproteins identified (cytochrome oxidase 2 (COX2) and NADH:ubiquinone oxidoreductase core subunit 4 (MT-ND4)) are encoded by mitochondrial DNA. Using siRNA in HeLa cells, we found that reducing endogenous mOGT expression leads to alterations in mitochondrial structure and function, including Drp1-dependent mitochondrial fragmentation, reduction in mitochondrial membrane potential, and a significant loss of mitochondrial content in the absence of mitochondrial ROS. These defects are associated with a compensatory increase in oxidative phosphorylation per mitochondrion. mOGT is also critical for cell survival; siRNA-mediated knockdown of endogenous mOGT protected cells against toxicity mediated by rotenone, a complex I inhibitor. Conversely, reduced expression of both nucleocytoplasmic (ncOGT) and mitochondrial (mOGT) OGT isoforms is associated with increased mitochondrial respiration and elevated glycolysis, suggesting that ncOGT is a negative regulator of cellular bioenergetics. Last, we determined that mOGT is probably involved in the glycosylation of a restricted set of mitochondrial targets. We identified four proteins implicated in mitochondrial biogenesis and metabolism regulation as candidate substrates of mOGT, including leucine-rich PPR-containing protein and mitochondrial aconitate hydratase. Our findings suggest that mOGT is catalytically active in vivo and supports mitochondrial structure, health, and survival, whereas ncOGT predominantly regulates cellular bioenergetics.
O-GlcNAc proteins:
A6QQ83, B1WBY5, D4A1Y5, E1BJA2, C1QBP, O62828, HCD2, IDH3B, AKAP1, NDUAC, CY1, QCR7, DHE3, COX41, COX5A, COX5B, THTR, ATPB, ADT1, NU4M, ATPD, ATPG, HXK1, CX6A2, KAD2, NNTM, IVD, MPCP, AATM, CX7A2, GLSK, QCR8, AT5F1, ATP5H, ATPO, ABCD3, ATPA, NB5R3, QCR2, SDHA, QCR1, 3HIDH, CPT1A, NDUAA, PRDX2, NDUS7, NDUB4, ODPB, VDAC2, COX2, FIS1, M2OM, NDUA4, NDUB7, NDUA2, NDUB8, NDUBA, NDUB5, NDUC2, IDHP, NDUA7, COQ5, LETM1, ATPK, CISY, Q2NL19, COQ9, MDHM, ATAD3, SDHB, STML2, HSDL2, LONM, NDUA9, TOM20, AMPL, Q7TQ85, NDUBB, HINT2, NDUAD, SFXN3
Species: Bos taurus, Rattus norvegicus, Homo sapiens
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