Abstract：
:The hexosamine biosynthetic pathway (HBP) integrates glucose, amino acids, fatty acids and nucleotides metabolisms for uridine diphosphate N-acetylglucosamine (UDP-GlcNAc) synthesis. UDP-GlcNAc is the nucleotide sugar donor for O-linked β-N-acetylglucosaminylation (O-GlcNAcylation) processes. O-GlcNAc transferase (OGT) is the enzyme which transfers the N-acetylglucosamine (O-GlcNAc) residue onto target proteins. Several studies previously showed that glucose metabolism dysregulations associated with obesity, diabetes or cancer correlated with an increase of OGT expression and global O-GlcNAcylation levels. Moreover, these diseases present an increased activation of the nutrient sensing mammalian target of rapamycin (mTOR) pathway. Other works demonstrate that mTOR regulates protein O-GlcNAcylation in cancer cells through stabilization of OGT. In this context, we studied the cross-talk between these two metabolic sensors in vivo in obese mice predisposed to diabetes and in vitro in normal and colon cancer cells. We report that levels of OGT and O-GlcNAcylation are increased in obese mice colon tissues and colon cancer cells and are associated with a higher activation of mTOR signaling. In parallel, treatments with mTOR regulators modulate OGT and O-GlcNAcylation levels in both normal and colon cancer cells. However, deregulation of O-GlcNAcylation affects mTOR signaling activation only in cancer cells. Thus, a crosstalk exists between O-GlcNAcylation and mTOR signaling in contexts of metabolism dysregulation associated to obesity or cancer.
journal_name
J Bioenerg Biomembrjournal_title
Journal of bioenergetics and biomembranesauthors
Very N,Steenackers A,Dubuquoy C,Vermuse J,Dubuquoy L,Lefebvre T,El Yazidi-Belkoura Idoi
10.1007/s10863-018-9747-ysubject
Has Abstractpub_date
2018-06-01 00:00:00pages
213-222issue
3eissn
0145-479Xissn
1573-6881pii
10.1007/s10863-018-9747-yjournal_volume
50pub_type
杂志文章abstract：:Heat shock protein 90 (Hsp90) is an attractive therapeutic target. Geldanamycin (GA), the first identified Hsp90 inhibitor, exhibited potent antitumor activity, but possessed significant hepatotoxicity. To overcome the hepatotoxicity derived from the quinone structure of GA, a non-quinone GA derivative 17-demethoxy-re...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-015-9620-1
更新日期：2015-10-01 00:00:00
abstract：:The Nm23-H1/nucleoside diphosphate (NDP) kinase A is a metastasis suppressor, besides its enzymatic activity. The mutant S120G has been found in high-grade neuroblastomas. The mutant protein, once denatured in urea, is unable to refold in vitro. A size-exclusion chromatography analysis of the folding/association pathw...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-006-9042-1
更新日期：2006-08-01 00:00:00
abstract：:This review is primarily focused on the contribution of our laboratory to study of the mitochondrial uncoupling UCPs. The initial stage was the description of a 32-kDa membranous protein specifically induced in brown adipose tissue mitochondria of cold-adapted rats. This protein was then shown by others to be responsi...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1023/a:1005488105076
更新日期：1999-10-01 00:00:00
abstract：:Both cellular proliferation and apoptosis (programmed cell death) have been claimed to be modulated, perhaps even triggered by, changes in intracellular pH. In this review, we summarize the evidence that gave rise to these hypotheses. To facilitate a critical appraisal of the existing data, we briefly review the main ...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1023/a:1022407116339
更新日期：1997-08-01 00:00:00
abstract：:Complete initial steady state kinetics of NADH-decylubiquinone (DQ) oxidoreductase reaction between pH 6.5 and 9.0 show an ordered sequential mechanism in which the order of substrate bindings and product releases is NADH-DQ-DQH2-NAD+. NADH binding to the free enzyme is accelerated by protonation of an amino acid (pos...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/a:1027387730474
更新日期：2003-10-01 00:00:00
abstract：:The multi-subunit vacuolar-type H(+)-ATPase consists of a V(1) domain (A-H subunits) catalyzing ATP hydrolysis and a V(0) domain (a, c, c', c", d, e) responsible for H(+) translocation. The mammalian V(0) d subunit is one of the least-well characterized, and its function and position within the pump are still unclear....
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-008-9161-y
更新日期：2008-08-01 00:00:00
abstract：:Recent studies of isolated muscle membrane have enabled induction and monitoring of rapid Ca2+ release from sarcoplasmic reticulum (SR)5 in vitro by a variety of methods. On the other hand, various proteins that may be directly or indirectly involved in the Ca2+ release mechanism have begun to be unveiled. In this min...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF00812071
更新日期：1989-04-01 00:00:00
abstract：:The F1F0 complex of Paracoccus denitrificans (PdF1F0) is the fastest ATP synthase but the slowest ATPase. Sulfite exerts maximal activation of the PdF1F0-ATPase (Pacheco-Moisés, F., García, J. J., Rodríguez-Zavala, J. S., and Moreno-Sánchez, R. (2000). Eur J. Biochem. 267, 993-1000) but its effect on the PdF1F0-ATP sy...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/a:1020252401675
更新日期：2002-08-01 00:00:00
abstract：:ATP binding cassette (ABC) transporters comprise an extended protein family involved in the transport of a broad spectrum of solutes across membranes. They consist of a common architecture including two ATP-binding domains converting chemical energy into conformational changes and two transmembrane domains facilitatin...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/s10863-007-9120-z
更新日期：2007-12-01 00:00:00
abstract：:Little is known on antimicrobial peptide permeation through outer membrane channels in gram-negative bacteria. Herein, we probed at a single-molecule level the interaction of two different peptides, magainin 2 and HPA3P with OmpF from E. coli. HPA3P is an analogue of the antimicrobial peptide HP(2-20) isolated from th...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-010-9273-z
更新日期：2010-04-01 00:00:00
abstract：:The purpose of this study was to characterize the physical properties of cytochrome c oxidase from rat liver. The enzyme was extracted from isolated mitochondria with nonionic detergents and further purified by ion-exchange chromatography on DEAE Bio-Gel A. The purified enzyme contained 9.64 nmol heme a/mg protein and...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/BF00743154
更新日期：1977-08-01 00:00:00
abstract：:Recent progress regarding the structure of the Ca(2+)-translocating ATPase of sarcoplasmic reticulum in several conformational states, and a substantial accumulation of biochemical information about this and other P-type ATPases, have put everything in place for the final convergence of biochemistry and structure that...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/a:1024641413205
更新日期：2003-06-01 00:00:00
abstract：:Bacillus subtilis has a bifurcated respiratory chain composed of a cytochrome branch and a quinol oxidase branch. The respiratory complexes of this bacterium have been elucidated mostly by the analysis of the genome and by the isolation of individual complexes. The supramolecular organization of this respiratory chain...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-012-9454-z
更新日期：2012-08-01 00:00:00
abstract：:The cytochrome b6/f complex of higher plant chloroplasts is uniformly distributed throughout both appressed and nonappressed thylakoids, in contrast to photosystem II and photosystem I, the other major membrane protein complexes involved in electron transport. We discuss how this distribution is likely to affect inter...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF00743013
更新日期：1986-10-01 00:00:00
abstract：:Recent progress is summarized on the structure, function, and regulation of the tricarboxylate (i.e., citrate) transport protein (CTP) from the rat liver mitochondrial inner membrane. The transporter has been purified and its reconstituted function characterized. A cDNA clone encoding the CTP has been isolated and seq...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/BF01108407
更新日期：1993-10-01 00:00:00
abstract：:Dysfunction of neuronal metabolism is central to all forms of seizure activity. Clinical, genetic and metabolic studies have implicated mitochondria in the process. Alterations in electron transport, generation of reactive oxygen species, calcium metabolism and apoptosis all have been described in human and animal ner...
journal_title：Journal of bioenergetics and biomembranes
pub_type：
doi：10.1007/s10863-010-9322-7
更新日期：2010-12-01 00:00:00
abstract：:Subunit II of cytochrome c oxidase (Cox2) is usually encoded in the mitochondrial genome, synthesized in the organelle, inserted co-translationally into the inner mitochondrial membrane, and assembled into the respiratory complex. In chlorophycean algae however, the cox2 gene was split into the cox2a and cox2b genes, ...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-017-9728-6
更新日期：2017-12-01 00:00:00
abstract：:Arsenic trioxide is an effective treatment for acute promyelocytic leukemia, but resistance to metalloid salts is found in humans. Using atomic absorption spectroscopy, we have measured the rate of uptake of arsenic trioxide and of antimony tartrate in GLC4 and GLC4/ADR cells overexpressing MRP1 and the rate of their ...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/a:1015180026665
更新日期：2002-04-01 00:00:00
abstract：:Overexpression of the Homo sapiens LYR motif containing 1 (LYRM1) causes mitochondrial dysfunction and induces insulin resistance in 3T3-L1 adipocytes. α-Lipoic acid (α-LA), a dithiol compound with antioxidant properties, improves glucose transport and utilization in 3T3-L1 adipocytes. The aim of this study was to inv...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-012-9460-1
更新日期：2012-10-01 00:00:00
abstract：:In the mitochondrial F(O)F(1) ATP-synthase/ATPase complex, subunits α and β are part of the extrinsic portion that catalyses ATP synthesis. Since there are no reports about genes and proteins from these subunits in crustaceans, we analyzed the cDNA sequences of both subunits in the whiteleg shrimp Litopenaeus vannamei...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-011-9340-0
更新日期：2011-04-01 00:00:00
abstract：:The role of nucleoside diphosphate (NDP) kinase with special reference to mammalian signal transduction systems was described. The interaction between NDP kinases and G proteins was reevaluated in view of their protein structural information and its significance was extended further on the basis of recent findings obt...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1023/a:1023489722460
更新日期：2003-02-01 00:00:00
abstract：:The small alkylating molecule, 3-bromopyruvate (3BP), is a potent and specific anticancer agent. 3BP is different in its action from most currently available chemo-drugs. Thus, 3BP targets cancer cells' energy metabolism, both its high glycolysis ("Warburg Effect") and mitochondrial oxidative phosphorylation. This inh...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-012-9417-4
更新日期：2012-02-01 00:00:00
abstract：:The respiratory chain of marine and moderately halophilic bacteria requires Na+ for maximum activity, and the site of Na(+)-dependent activation is located in the NADH-quinone reductase segment. The Na(+)-dependent NADH-quinone reductase purified from marine bacterium Vibrio alginolyticus is composed of three subunits...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/BF00762464
更新日期：1993-08-01 00:00:00
abstract：:NM23s (or NDP kinases) regulate a fascinating variety of cellular activities, including proliferation, development, and differentiation. All these processes are modulated by external stimuli, leading to the idea that this family of proteins modulates transmembrane signaling pathways. This review summarizes the evidenc...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1023/a:1005589029959
更新日期：2000-06-01 00:00:00
abstract：:The role of brain and liver mitochondria at epileptic seizure was studied on Krushinsky-Molodkina (KM) rats which respond to sound with an intensive epileptic seizure (audiogenic epilepsy). We didn't find significant changes in respiration rats of brain and liver mitochondria of KM and control rats; however the effici...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-016-9693-5
更新日期：2017-04-01 00:00:00
abstract：:Renal artery clamping itself induces renal ischemia which subsequently causes renal cell injury and can lead to renal failure. The duration of warm ischemia that would be safe for postoperative kidney function during partial nephrectomy remains under investigations. Mitochondria play an important role in pathophysiolo...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-016-9643-2
更新日期：2016-02-01 00:00:00
abstract：:The production of all blood cells from hematopoietic stem cells (HSC) is highly sensitive to reactive oxygen species (ROS). Cumulating evidence suggests that mitochondria are critical for HSC fate determination. FOXO are known regulators of anti-oxidant response and key to the maintenance of HSC. Recent works indicate...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章,评审
doi：10.1007/s10863-017-9719-7
更新日期：2017-08-01 00:00:00
abstract：:The ATP synthetase of chloroplast membranes binds ADP and ATP with high affinity, and the binding becomes quasi-irreversible under certain conditions. One explanation of the function of these nucleotides is that they are transiently tightly bound during ATP synthesis as part of the catalytic process, and that the rele...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/BF00744524
更新日期：1983-10-01 00:00:00
abstract：:Succinate-driven reverse electron transport (RET) is one of the main sources of mitochondrial reactive oxygen species (mtROS) in ischemia-reperfusion injury. RET is dependent on mitochondrial membrane potential (Δψm) and transmembrane pH difference (ΔpH), components of the proton motive force (pmf); a decrease in Δψm ...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1007/s10863-018-9766-8
更新日期：2018-10-01 00:00:00
abstract：:Free radical production and leak of brain nonsynaptic mitochondria were higher with pyruvate/malate than with succinate in rats and pigeons. Rotenone, antimycin A, and myxothiazol maximally stimulated free radical production with pyruvate/malate but not with succinate. Simultaneous treatment with myxothiazol plus anti...
journal_title：Journal of bioenergetics and biomembranes
pub_type： 杂志文章
doi：10.1023/a:1020592719405
更新日期：1998-06-01 00:00:00
