Beta-adrenergic receptor subtype-specific signaling in cardiac myocytes from beta(1) and beta(2) adrenoceptor knockout mice.

abstract：:Rat and human lung microsomal cytochrome P-450 (P-450) enzymes have been characterized with regard to their catalytic activities towards several xenobiotic chemicals, including procarcinogens, in different microsomal preparations. Rat lung microsomal P-450s were more active than the human P-450s in catalyzing most of ...

journal_title：Molecular pharmacology

authors： Shimada T,Yun CH,Yamazaki H,Gautier JC,Beaune PH,Guengerich FP

更新日期：1992-05-01 00:00:00

abstract：:A polyamine component of Agelenopsis aperta spider venom designated FTX is reported to be a selective antagonist of P-type calcium channels in the mammalian brain. Consequently, this component has frequently been used as a pharmacological tool to determine the presence, distribution, and function of P-type channels in...

journal_title：Molecular pharmacology

authors： Norris TM,Moya E,Blagbrough IS,Adams ME

更新日期：1996-10-01 00:00:00

abstract：:In the search for 1-[(2-hydroxyethoxy)methyl]-6-(phenylthio)thymine derivatives, we have found 6-benzyl-1-(ethoxymethyl)-5-isopropyl-uracil (MKC-442) to be a highly potent and selective inhibitor of human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT). The IC50 value of MKC-442 for HIV-1 RT was 8 nM....

journal_title：Molecular pharmacology

authors： Yuasa S,Sadakata Y,Takashima H,Sekiya K,Inouye N,Ubasawa M,Baba M

更新日期：1993-10-01 00:00:00

abstract：:The nucleoside analog 5-azacytidine is an archetypical drug for epigenetic cancer therapy, and its clinical effectiveness has been demonstrated in the treatment of myelodysplastic syndromes (MDS) and acute myelogenous leukemia (AML). However, therapy resistance in patients with MDS/AML remains a challenging issue. Mem...

journal_title：Molecular pharmacology

authors： Hummel-Eisenbeiss J,Hascher A,Hals PA,Sandvold ML,Müller-Tidow C,Lyko F,Rius M

更新日期：2013-09-01 00:00:00

abstract：:Psoralen plus UVA light (PUVA) is commonly used to treat psoriasis, a common skin disorder associated with rapid proliferation of cells. PUVA exerts its antiproliferative activity through formation of DNA monoadducts and interstrand cross-links (ICLs). However, this treatment may lead to skin malignancies as a direct ...

journal_title：Molecular pharmacology

authors： Derheimer FA,Hicks JK,Paulsen MT,Canman CE,Ljungman M

更新日期：2009-03-01 00:00:00

abstract：:We synthesized a novel platinum drug, cis-[PtCl(NH3)2(N7-ACV)]+, in which ACV is the antiviral drug acyclovir [a deoxyriboguanosine analogue, 9-(2-hydroxyethoxymethyl)guanine]. This new compound exhibits antiviral efficacy in vitro and exhibits an antitumor activity profile different from that of cisplatin [Metal-Base...

journal_title：Molecular pharmacology

authors： Balcarová Z,Kaspárková J,Zákovská A,Nováková O,Sivo MF,Natile G,Brabec V

更新日期：1998-05-01 00:00:00

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

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

更新日期：2007-08-01 00:00:00

abstract：:The mechanisms underlying mastoparan-induced elevation of the intracellular free calcium concentration ([Ca2+]i) were investigated in the insulin-secreting cell lines RINm5F and HIT. In both cell types, micromolar concentrations of mastoparan induced a prompt increase of [Ca2+]i, measured as an increase in fura-2 fluo...

journal_title：Molecular pharmacology

authors： Eddlestone GT,Komatsu M,Shen L,Sharp GW

更新日期：1995-04-01 00:00:00

abstract：:Two peptides, which have no significant homology with known protein structures, were obtained by microsequencing of a mu-opioid binding protein purified to homogeneity from bovine striatal membranes. Polyclonal antibodies generated against portions of these peptides immunoprecipitated up to 65% of radiolabeled purifie...

journal_title：Molecular pharmacology

authors： Gioannini TL,Yao YH,Hiller JM,Taylor LP,Simon EJ

更新日期：1993-10-01 00:00:00

abstract：:Resistance to cisplatin, one of the most widely used anticancer chemotherapeutic agents, is a major clinical problem. There is no effective way to predict development of cisplatin resistance in cancers. As determined by reverse transcription-polymerase chain reaction and Western blotting, the expression of gamma-caten...

journal_title：Molecular pharmacology

authors： Liang XJ,Shen DW,Gottesman MM

更新日期：2004-05-01 00:00:00

abstract：:In previous studies, we have shown that mouse RAW 264.7 macrophages possess pyrimidinoceptors, coupled to a phosphoinositide-specific phospholipase C, with a higher specificity for UTP than for ATP. In the current study, we explored the mechanism involved in the UTP-induced intracellular acidification seen in this cel...

journal_title：Molecular pharmacology

authors： Lin WW,Chang SH,Wu ML

更新日期：1998-02-01 00:00:00

abstract：:The mouse 5-hydroxytryptamine4a (5-HT4a) receptor is an unusual member of the G protein-coupled receptor superfamily because it possesses two separate carboxyl-terminal palmitoylation sites, which may allow the receptor to adopt different conformations in an agonist-dependent manner (J Biol Chem 277:2534-2546, 2002). ...

journal_title：Molecular pharmacology

authors： Ponimaskin E,Dumuis A,Gaven F,Barthet G,Heine M,Glebov K,Richter DW,Oppermann M

更新日期：2005-05-01 00:00:00

abstract：:Neuronal cell lines provide a source of pure populations of neurons and allow the properties of many neurotransmitter receptors to be studied. However, none of these cells have been reported to express functional gamma-aminobutyric acid (GABA)A receptors. Indeed, there have been no reports of cell lines expressing fun...

journal_title：Molecular pharmacology

authors： Hales TG,Kim H,Longoni B,Olsen RW,Tobin AJ

更新日期：1992-08-01 00:00:00

abstract：:Glutamatergic synaptic transmitters are cleared from the synaptic cleft through excitatory amino acid transporters (EAATs) that are responsible for recycling glutamate and transporting it into neurons and glial cells. To probe the structural role of the TM4b-4c loop of EAAT1 (Rattus norvegicus), each of the 57 amino a...

journal_title：Molecular pharmacology

authors： Zhang W,Zhang X,Qu S

更新日期：2018-07-01 00:00:00

abstract：:Avermectins are a family of potent broad-spectrum anthelmintic compounds, which bind with high affinity to membranes isolated from the free-living nematode Caenorhabditis elegans. Binding of avermectins is thought to modulate chloride channel activity, but the exact mechanism for anthelmintic activity remains to be de...

journal_title：Molecular pharmacology

authors： Arena JP,Liu KK,Paress PS,Cully DF

更新日期：1991-09-01 00:00:00

abstract：:Previous studies have shown that neural stimulation of brown adipose tissue (BAT) reorganizes the expression and activity of signaling proteins in the beta-adrenergic adenylyl cyclase pathway. Cold stress increases neural stimulation of BAT and increases alpha1-adrenergic receptor number; however, the alpha1 receptor ...

journal_title：Molecular pharmacology

authors： Granneman JG,Zhai Y,Lahners KN

更新日期：1997-04-01 00:00:00

abstract：:The class III antiarrhythmic drugs amiodarone and bretylium tosylate are cationic/amphiphilic, and various substances with these physico-chemical properties are known to directly activate heterotrimeric regulatory G proteins. We asked the question of whether class III antiarrhythmic drugs are also direct G protein act...

journal_title：Molecular pharmacology

authors： Hagelüken A,Nürnberg B,Harhammer R,Grünbaum L,Schunack W,Seifert R

更新日期：1995-02-01 00:00:00

abstract：:Glutathione-S-transferase-catalyzed conjugation of glutathione (GSH) to aflatoxin B1-8,9-epoxide plays an important role in preventing binding of this ultimate carcinogen to target macromolecules. Once formed, the aflatoxin B1-epoxide-GSH conjugates are actively extruded from the cell by an unidentified ATP-dependent ...

journal_title：Molecular pharmacology

authors： Loe DW,Stewart RK,Massey TE,Deeley RG,Cole SP

更新日期：1997-06-01 00:00:00

abstract：:The biliary excretion of several organic anions is mediated by the canalicular multispecific organic anion transporter (cMOAT), which is hereditarily defective in mutant rats such as Eisai hyperbilirubinemic rats (EHBR). In addition, using a kinetic study with isolated canalicular membrane vesicles, we recently sugges...

journal_title：Molecular pharmacology

authors： Hirohashi T,Suzuki H,Ito K,Ogawa K,Kume K,Shimizu T,Sugiyama Y

更新日期：1998-06-01 00:00:00

abstract：:Molecular cloning of the alpha 2A-adrenergic receptor has shown that this receptor is a member of the gene superfamily of guanine nucleotide-binding protein (G protein)-coupled receptors. The alpha 2A-adrenergic receptor expressed in Chinese hamster ovary (CHO) cells attenuates and potentiates forskolin-stimulated cAM...

journal_title：Molecular pharmacology

authors： Wang CD,Buck MA,Fraser CM

更新日期：1991-08-01 00:00:00

abstract：:The μ-opioid receptor gene undergoes extensive alternative splicing to generate an array of splice variants. One group of splice variants excludes the first transmembrane (TM) domain and contains six TM domains. These 6TM variants are essential for the action of a novel class of analgesic drugs, including 3-iodobenzoy...

journal_title：Molecular pharmacology

authors： Zhang T,Xu J,Pan YX

更新日期：2020-10-01 00:00:00

abstract：:Regulation of beta2-adrenergic receptor (beta2AR) levels by glucocorticoids is a physiologically important mechanism for altering beta2AR responsiveness. Glucocorticoids increase beta2AR density by increasing the rate of beta2AR gene transcription, but the cis-elements involved have not been well characterized. We now...

journal_title：Molecular pharmacology

authors： Cornett LE,Hiller FC,Jacobi SE,Cao W,McGraw DW

更新日期：1998-12-01 00:00:00

abstract：:Adenosine receptors of the A1 and A2 subtypes were characterized in membranes from DDT1 MF-2 smooth muscle cells. These cells possess a high density of A1 adenosine receptors (Bmax = 0.8-0.9 pmol/mg of protein), as measured by both agonist and antagonist radioligands. Agonists compete for [125I]N6-[2-(4-amino-3-iodoph...

journal_title：Molecular pharmacology

authors： Ramkumar V,Barrington WW,Jacobson KA,Stiles GL

更新日期：1990-02-01 00:00:00

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

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

更新日期：1998-11-01 00:00:00

abstract：:The bisdioxopiperazines such as (+)-(S)-4,4'-propylenedi-2,6-piperazinedione (dexrazoxane; ICRF-187), 1,2-bis(3,5-dioxopiperazin-1-yl)ethane (ICRF-154), and 4,4'-(1,2-dimethyl-1,2-ethanediyl)bis-2,6-piperazinedione (ICRF-193) are agents that inhibit eukaryotic topoisomerase II, whereas their ring-opened hydrolysis pro...

journal_title：Molecular pharmacology

authors： Grauslund M,Thougaard AV,Füchtbauer A,Hofland KF,Hjorth PH,Jensen PB,Sehested M,Füchtbauer EM,Jensen LH

更新日期：2007-10-01 00:00:00

abstract：:The chelator di-2-pyridylketone 4,4-dimethyl-3-thiosemicarbazone (Dp44mT) shows potent and selective anticancer and antimetastatic activity. However, the mechanism by which it is initially transported into cells to induce cytotoxicity is unknown. Hence, the current investigation examined the cellular uptake of ¹⁴C-Dp4...

journal_title：Molecular pharmacology

authors： Merlot AM,Pantarat N,Menezes SV,Sahni S,Richardson DR,Kalinowski DS

更新日期：2013-12-01 00:00:00

abstract：:Functional coupling between muscarinic (m3) receptors and two voltage-gated K+ (Kv) channels (Kv1.2 and Kv1.5) cloned originally from canine colonic smooth muscle was studied using the Xenopus oocytes expression system and a mammalian cell line (COS cells). Oocytes were coinjected with cRNAs encoding the human m3 rece...

journal_title：Molecular pharmacology

authors： Vogalis F,Ward M,Horowitz B

更新日期：1995-12-01 00:00:00

abstract：:Vesnarinone, a cardiotonic agent, blocks I(Kr) and, unlike other I(Kr) blockers, produces a frequency-dependent prolongation of action potential duration (APD). To elucidate the mechanisms, we studied the effects of vesnarinone on HERG, the cloned human I(Kr) channel, heterologously expressed in Xenopus laevis oocytes...

journal_title：Molecular pharmacology

authors： Kamiya K,Mitcheson JS,Yasui K,Kodama I,Sanguinetti MC

更新日期：2001-08-01 00:00:00

abstract：:Phosphodiesterase-9 (PDE9) inhibitors have been studied as potential therapeutics for treatment of central nervous system diseases and diabetes. Here, we report the discovery of a new category of PDE9 inhibitors by rational design on the basis of the crystal structures. The best compound, (S)-6-((1-(4-chlorophenyl)eth...

journal_title：Molecular pharmacology

authors： Huang M,Shao Y,Hou J,Cui W,Liang B,Huang Y,Li Z,Wu Y,Zhu X,Liu P,Wan Y,Ke H,Luo HB

更新日期：2015-11-01 00:00:00

abstract：:Previous studies have demonstrated that the quinone group may play an important role in modulating the alkylating activity of quinone alkylating agents. Introduction of a quinone moiety markedly increased the alkylating activity and cytotoxic activity of the model quinone alkylating agents benzoquinone mustard and ben...

journal_title：Molecular pharmacology

authors： Begleiter A,Leith MK,Pan SS

更新日期：1991-09-01 00:00:00