Expression of deoxynucleotide carrier is not associated with the mitochondrial DNA depletion caused by anti-HIV dideoxynucleoside analogs and mitochondrial dNTP uptake.

Abstract:

:Our previous studies suggested that the dNTP/dNDP transporter systems that exist in mitochondria for transporting dNTP/dNDP from the cytoplasm to the mitochondria for mitochondrial DNA (mtDNA) synthesis play a critical role in delayed cytotoxicity of anti-human immunodeficiency virus (HIV) dideoxynucleoside analogs in mitochondria. A protein, termed mitochondrial deoxynucleotide carrier (DNC), based on its ability to transport dNTPs in reconstituted proteoliposomes, was recently isolated. Lacking cellular information to substantiate DNC's involvement in the delayed cytotoxicity of dideoxynucleoside analogs, we expressed DNC and reconstituted it into proteoliposomes. The K(m) values for dNTPs uptake by reconstituted DNC were in the millimolar range, which is a thousandfold higher than that of the physiological level. Furthermore, we found that overexpressing DNC (wt and G177A-mutated DNC) in RKO cells did not sensitize the cells to the mtDNA depletion caused by beta-d-2',3'-dideoxycytidine (ddC), 2',3'-didehydro-2',3'-dideoxythymidine, and 2',3'-dideoxyinosine or affect the mtDNA recovery rate after ddC treatment. Mitochondria isolated from DNC-overexpressing cells did not significantly differ from that isolated from RKO cells in terms of the rate of uptake or the incorporation of dTTP into mitochondria DNA. Down-regulation of DNC expression by small interfering RNA was also ineffective in changing the action of dideoxynucleoside analogs on the mtDNA depletion and the rate of dTTP uptake into isolated mitochondria. Down-regulation of both DNC and thymidine kinase-2 also did not cause mtDNA depletion. We conclude that DNC does not play an important role in the delayed cytotoxicity (mtDNA depletion) of anti-HIV dideoxynucleoside analogs and dNTPs uptake into mitochondria.

journal_name

Mol Pharmacol

journal_title

Molecular pharmacology

authors

Lam W,Chen C,Ruan S,Leung CH,Cheng YC

doi

10.1124/mol.104.007120

keywords:

subject

Has Abstract

pub_date

2005-02-01 00:00:00

pages

408-16

issue

2

eissn

0026-895X

issn

1521-0111

pii

mol.104.007120

journal_volume

67

pub_type

杂志文章
  • Cellular and pharmacogenetics foundation of synergistic interaction of pemetrexed and gemcitabine in human non-small-cell lung cancer cells.

    abstract::Gemcitabine and pemetrexed are effective agents in the treatment of non-small-cell lung cancer (NSCLC), and the present study investigates cellular and genetic aspects of their interaction against A549, Calu-1, and Calu-6 cells. Cells were treated with pemetrexed and gemcitabine, and their interaction was assessed usi...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.104.009373

    authors: Giovannetti E,Mey V,Nannizzi S,Pasqualetti G,Marini L,Del Tacca M,Danesi R

    更新日期:2005-07-01 00:00:00

  • Phenylarsine oxide inhibits agonist-induced changes in photolabeling but not agonist-induced desensitization of the beta-adrenergic receptor.

    abstract::In the human lymphocyte, desensitization of the beta-adrenergic receptor-adenylate cyclase complex is associated with sequestration of the receptor as well as a change in photolabeling of beta-receptor proteins. Thus, desensitization of the lymphocyte beta-adrenergic receptor-adenylate cyclase system is associated wit...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Feldman RD,McArdle W,Lai C

    更新日期:1986-11-01 00:00:00

  • Modulators of CXCR4 and CXCR7/ACKR3 Function.

    abstract::The two G protein-coupled receptors (GPCRs) C-X-C chemokine receptor type 4 (CXCR4) and atypical chemokine receptor 3 (ACKR3) are part of the class A chemokine GPCR family and represent important drug targets for human immunodeficiency virus (HIV) infection, cancer, and inflammation diseases. CXCR4 is one of only thre...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章,评审

    doi:10.1124/mol.119.117663

    authors: Adlere I,Caspar B,Arimont M,Dekkers S,Visser K,Stuijt J,de Graaf C,Stocks M,Kellam B,Briddon S,Wijtmans M,de Esch I,Hill S,Leurs R

    更新日期:2019-12-01 00:00:00

  • Dual targeting of the androgen receptor and hypoxia-inducible factor 1α pathways synergistically inhibits castration-resistant prostate cancer cells.

    abstract::Enzalutamide is a potent second-generation androgen receptor (AR) antagonist with activity in metastatic castrate-resistant prostate cancer (CRPC). Although enzalutamide is initially effective, disease progression inevitably ensues with the emergence of resistance. Intratumoral hypoxia is also associated with CRPC pro...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.114.097477

    authors: Fernandez EV,Reece KM,Ley AM,Troutman SM,Sissung TM,Price DK,Chau CH,Figg WD

    更新日期:2015-06-01 00:00:00

  • Alpha 2-adrenoceptor stimulation affects total glucose utilization in isolated islets of Langerhans.

    abstract::Glucose utilization in isolated islets of Langerhans of the rat was determined by measuring the conversion of [5-3H]glucose (10 mM) to 3H2O. The alpha 2-adrenoceptor agonists clonidine, epinephrine, and norepinephrine in the presence of the alpha 1-adrenoceptor antagonist prazosin and the beta-adrenoceptor antagonist ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Laychock SG

    更新日期:1987-08-01 00:00:00

  • Understanding the Bases of Function and Modulation of α7 Nicotinic Receptors: Implications for Drug Discovery.

    abstract::The nicotinic acetylcholine receptor (nAChR) belongs to a superfamily of pentameric ligand-gated ion channels involved in many physiologic and pathologic processes. Among nAChRs, receptors comprising the α7 subunit are unique because of their high Ca(2+) permeability and fast desensitization. nAChR agonists elicit a t...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章,评审

    doi:10.1124/mol.116.104240

    authors: Corradi J,Bouzat C

    更新日期:2016-09-01 00:00:00

  • Caspase activation in MCF7 cells responding to etoposide treatment.

    abstract::Studies of the biochemical mechanisms evoked by conventional treatments for neoplastic diseases point to apoptosis as a key process for elimination of unwanted cells. Although the pathways through which chemotherapeutics promote cell death remain largely unknown, caspase proteases play a central role in the induction ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.53.3.446

    authors: Benjamin CW,Hiebsch RR,Jones DA

    更新日期:1998-03-01 00:00:00

  • Antipeptide antibodies localize N-(4-azido-3-[125I] iodophenethyl)spiperone binding to the carboxyl-terminal portion of the D2 dopamine receptor.

    abstract::Antibodies against synthetic peptides of the D2 dopamine receptor were used, in combination with photoaffinity labeling, to localize the region of ligand binding in the receptor. Specific antibodies to peptide sequences 221-234 and 259-272 and to the carboxyl-terminal peptide 402-415, all corresponding to cytoplasmic ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: David C,Fuchs S

    更新日期:1991-11-01 00:00:00

  • Polygamain, a new microtubule depolymerizing agent that occupies a unique pharmacophore in the colchicine site.

    abstract::Bioassay-guided fractionation was used to isolate the lignan polygamain as the microtubule-active constituent in the crude extract of the Mountain torchwood, Amyris madrensis. Similar to the effects of the crude plant extract, polygamain caused dose-dependent loss of cellular microtubules and the formation of aberrant...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.111.075838

    authors: Hartley RM,Peng J,Fest GA,Dakshanamurthy S,Frantz DE,Brown ML,Mooberry SL

    更新日期:2012-03-01 00:00:00

  • [3H]ethylketocyclazocine binding to NCB-20 hybrid neurotumor cells.

    abstract::Ethylketocyclazocine (EKC) binds to two sites on NCB-20 neuroblastoma X Chinese hamster brain hybrid cells (KDH = 2 nM, Bmax = 21,000 sites/cell; KDL = 27 nM, Bmax = 140,000 sites/cell. The high-affinity site has been characterized as a delta opiate receptor. The low-affinity site is relatively benzomorphan-specific; ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: West RE Jr,McLawhon RW,Dawson G,Miller RJ

    更新日期:1983-03-01 00:00:00

  • Application of Mixture Design Response Surface Methodology for Combination Chemotherapy in PC-3 Human Prostate Cancer Cells.

    abstract::Combining chemotherapeutics to treat malignant tumors has been shown to be effective in preventing drug resistance, tumor recurrence, and reducing tumor size. We modeled combination drug therapy in PC-3 human prostate cancer cells using mixture design response surface methodology (MDRSM), a statistical technique desig...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.117.111450

    authors: Oblad R,Doughty H,Lawson J,Christensen M,Kenealey J

    更新日期:2018-08-01 00:00:00

  • A comparison of the oxidation of clozapine and olanzapine to reactive metabolites and the toxicity of these metabolites to human leukocytes.

    abstract::Olanzapine was shown to be oxidized to a reactive intermediate by HOCl, which is the major oxidant produced by activated neutrophils. A mass spectrum obtained using a flow system in which the reactants were fed into a mixing chamber and the products flowed directly into a mass spectrometer revealed a reactive intermed...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Gardner I,Zahid N,MacCrimmon D,Uetrecht JP

    更新日期:1998-06-01 00:00:00

  • Characterization of an NBS1 C-terminal peptide that can inhibit ataxia telangiectasia mutated (ATM)-mediated DNA damage responses and enhance radiosensitivity.

    abstract::ATM and NBS1, mutation of which lead to the human autosomal recessive diseases ataxia telangiectasia and Nijmegen breakage syndrome (NBS), respectively, are essential elements in the cellular response to DNA damage induced by ionizing radiation (IR). ATM is a member of the phosphatidylinositol 3-kinase family and is a...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.107.036681

    authors: Cariveau MJ,Tang X,Cui XL,Xu B

    更新日期:2007-08-01 00:00:00

  • Inhibitors of IMP dehydrogenase stimulate the phosphorylation of the anti-human immunodeficiency virus nucleosides 2',3'-dideoxyadenosine and 2',3'-dideoxyinosine.

    abstract::2',3'-Dideoxyadenosine (ddAdo) and its deamination product 2',3'-dideoxyinosine (ddIno) (didanosine) inhibit the replication and infectivity of the human immunodeficiency virus (HIV) in a number of in vitro assay systems. Early clinical studies (phase I) have indicated a role for ddIno in the treatment of patients wit...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Hartman NR,Ahluwalia GS,Cooney DA,Mitsuya H,Kageyama S,Fridland A,Broder S,Johns DG

    更新日期:1991-07-01 00:00:00

  • Camptothecin induces apoptosis in cancer cells via microRNA-125b-mediated mitochondrial pathways.

    abstract::Camptothecin (CPT) is an effective chemotherapeutic agent for treatment of patients with cancer. The mechanisms underlying CPT-mediated responses in cancer cells are not fully understood. MicroRNA (miRNA) play important roles in tumorigenesis and drug sensitivity. However, the interaction between camptothecin and miRN...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.111.076794

    authors: Zeng CW,Zhang XJ,Lin KY,Ye H,Feng SY,Zhang H,Chen YQ

    更新日期:2012-04-01 00:00:00

  • Closure of gap junction channels by arylaminobenzoates.

    abstract::We determined the effect of flufenamic acid (FFA) and related derivatives on gap junction channel currents, applying the dual whole-cell patch-clamp technique to pairs of N2A neuroblastoma cells transfected with various connexins. FFA reduced gap junction channel currents in a reversible and concentration-dependent ma...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.63.6.1389

    authors: Srinivas M,Spray DC

    更新日期:2003-06-01 00:00:00

  • Mutations within the cholecystokinin-B/gastrin receptor ligand 'pocket' interconvert the functions of nonpeptide agonists and antagonists.

    abstract::We have reported previously that the transmembrane domains of the cholecystokinin-B/gastrin receptor (CCK-BR) comprise a putative ligand binding pocket. In the present study, we examined whether amino acid substitutions within the CCK-BR pocket altered the affinities and/or functional activities of L-365,260 (the prot...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.54.5.857

    authors: Bläker M,Ren Y,Gordon MC,Hsu JE,Beinborn M,Kopin AS

    更新日期:1998-11-01 00:00:00

  • Characterization of variant neuroblastoma clones with missing or altered sodium channels.

    abstract::Variant neuroblastoma cell clones were selected for resistance to the cytotoxic effects of neurotoxins that cause persistent activation of sodium channels. Three classes of variant clones were obtained: sodium channel-deficient clones, which have markedly reduced numbers of functional sodium channels; scorpion toxin-r...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Costa MR,Catterall WA

    更新日期:1982-07-01 00:00:00

  • Expression of tandem glutathione S-transferase recombinant genes in COS cells for analysis of efficiency of protein expression and associated drug resistance.

    abstract::Expression vectors were designed and constructed to achieve optimum production of two different isozymes of rat glutathione S-transferase (GST) (EC 2.5.1.18) in COS cells, for studies of drug resistance. Promoter-enhancer elements from the simian virus 40 (SV40) early-region or the mouse alpha 2(I)-collagen gene, GST ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Manoharan TH,Welch PJ,Gulick AM,Puchalski RB,Lathrop AL,Fahl WE

    更新日期:1991-04-01 00:00:00

  • Orthosteric and allosteric modes of interaction of novel selective agonists of the M1 muscarinic acetylcholine receptor.

    abstract::Recent years have witnessed the discovery of novel selective agonists of the M(1) muscarinic acetylcholine (ACh) receptor (mAChR). One mechanism invoked to account for the selectivity of such agents is that they interact with allosteric sites. We investigated the molecular pharmacology of two such agonists, 1-[3-(4-bu...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.110.064345

    authors: Avlani VA,Langmead CJ,Guida E,Wood MD,Tehan BG,Herdon HJ,Watson JM,Sexton PM,Christopoulos A

    更新日期:2010-07-01 00:00:00

  • Purification, physicochemical, and kinetic properties of liver acetyl-CoA:arylamine N-acetyltransferase from rapid acetylator rabbits.

    abstract::Cytosolic liver acetyl-CoA:arylamine N-acetyltransferase (EC 2.3.1.5) from homozygous rapid acetylator rabbits (strain III/J) was purified to homogeneity as judged by gel filtration sodium dodecyl sulfate-polyacrylamide disc gel electrophoresis and isoelectrofocusing. The isoelectric point was estimated to be 5.2. The...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Andres HH,Vogel RS,Tarr GE,Johnson L,Weber WW

    更新日期:1987-04-01 00:00:00

  • High-throughput screening reveals a small-molecule inhibitor of the renal outer medullary potassium channel and Kir7.1.

    abstract::The renal outer medullary potassium channel (ROMK) is expressed in the kidney tubule and critically regulates sodium and potassium balance. The physiological functions of other inward rectifying K(+) (Kir) channels expressed in the nephron, such as Kir7.1, are less well understood in part due to the lack of selective ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.109.059840

    authors: Lewis LM,Bhave G,Chauder BA,Banerjee S,Lornsen KA,Redha R,Fallen K,Lindsley CW,Weaver CD,Denton JS

    更新日期:2009-11-01 00:00:00

  • Identification and pharmacological characterization of [125I]L-750,667, a novel radioligand for the dopamine D4 receptor.

    abstract::We identified a novel azaindole derivative, L-750,667, that has high affinity (Ki = 0.51 nM) and >2000-fold selectivity for D4 dopamine receptors compared with its activity at D2 and D3 dopamine receptors. L-750,667 had little affinity for rat D1/D5 dopamine receptors, sigma binding sites, or 5-hydroxytryptamine1A or ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Patel S,Patel S,Marwood R,Emms F,Marston D,Leeson PD,Curtis NR,Kulagowski JJ,Freedman SB

    更新日期:1996-12-01 00:00:00

  • Long-term fluoxetine treatment modulates cannabinoid type 1 receptor-mediated inhibition of adenylyl cyclase in the rat prefrontal cortex through 5-hydroxytryptamine 1A receptor-dependent mechanisms.

    abstract::Increasing data indicate that brain endocannabinoid system plays a role in the effects of antidepressant medications. Here we examined the effect of in vivo exposure to the selective serotonin uptake inhibitor fluoxetine on cannabinoid type 1 (CB(1)) receptor density and functionality in the rat prefrontal cortex (PFC...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.109.060079

    authors: Mato S,Vidal R,Castro E,Díaz A,Pazos A,Valdizán EM

    更新日期:2010-03-01 00:00:00

  • Differences in the effects of Hg(II) on DNA repair induced in Chinese hamster ovary cells by ultraviolet or X-rays.

    abstract::The effect of relatively nontoxic levels of HgCl2 on semiconservative DNA synthesis and on DNA repair induced following treatment of intact cells with X-ray or ultraviolet (UV) light has been studied in cultured Chinese hamster ovary cells. In the presence of 1 microM HgCl2 the repair of DNA strand breaks induced by 4...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Christie NT,Cantoni O,Sugiyama M,Cattabeni F,Costa M

    更新日期:1986-02-01 00:00:00

  • N-Terminal Targeting of Regulator of G Protein Signaling Protein 2 for F-Box Only Protein 44-Mediated Proteasomal Degradation.

    abstract::Regulator of G protein signaling (RGS) proteins are negative modulators of G protein signaling that have emerged as promising drug targets to improve specificity and reduce side effects of G protein-coupled receptor-related therapies. Several small molecule RGS protein inhibitors have been identified; however, enhanci...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/molpharm.120.000061

    authors: McNabb HJ,Gonzalez S,Muli CS,Sjögren B

    更新日期:2020-12-01 00:00:00

  • The 2016 John J. Abel Award Lecture: Targeting the Mechanical Microenvironment in Cancer.

    abstract::Past decades of cancer research have mainly focused on the role of various extracellular and intracellular biochemical signals on cancer progression and metastasis. Recent studies suggest an important role of mechanical forces in regulating cellular behaviors. This review first provides an overview of the mechanobiolo...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章,评审

    doi:10.1124/mol.116.106765

    authors: Majeski HE,Yang J

    更新日期:2016-12-01 00:00:00

  • Histidine residues 912 and 913 in protein associated with Myc are necessary for the inhibition of adenylyl cyclase activity.

    abstract::We reported previously that protein associated with Myc (PAM) interacts with the C2 domain of type V adenylyl cyclase (ACV-C2) and that purified PAM is a potent inhibitor of Galphas-stimulated ACV activity (J Biol Chem 276:47583-47589, 2001). The present study was conducted to identify the region in PAM that inhibits ...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.104.005355

    authors: Gao X,Patel TB

    更新日期:2005-01-01 00:00:00

  • Insights into the gating mechanism of the ryanodine-modified human cardiac Ca2+-release channel (ryanodine receptor 2).

    abstract::Ryanodine receptors (RyRs) are intracellular membrane channels playing key roles in many Ca(2+) signaling pathways and, as such, are emerging novel therapeutic and insecticidal targets. RyRs are so named because they bind the plant alkaloid ryanodine with high affinity and although it is established that ryanodine pro...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:10.1124/mol.114.093757

    authors: Mukherjee S,Thomas NL,Williams AJ

    更新日期:2014-09-01 00:00:00

  • Regulation of CYP4A expression in rat by dehydroepiandrosterone and thyroid hormone.

    abstract::Dehydroepiandrosterone (DHEA) is a peroxisome proliferating agent when administered in pharmacological dosages, but it has not been shown to function through the peroxisome proliferator-activated receptor in cell-based assays. Because members of the thyroid hormone/vitamins A and D nuclear receptor subfamily, includin...

    journal_title:Molecular pharmacology

    pub_type: 杂志文章

    doi:

    authors: Webb SJ,Xiao GH,Geoghegan TE,Prough RA

    更新日期:1996-02-01 00:00:00