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Transmembrane Transporters

KPT-330 inhibition of chromosome region maintenance 1 is cytotoxic and sensitizes chronic myeloid leukemia to Imatinib

1 | Oct 13 2019

Nie D et al. indicated that KPT-330 showed anti-leukemic activity and sensitized CML to IM in CRM1-dependent manner in vitro and in vivo. KPT-330 represents an alternative therapy for IM-refractory CML, warranting further investigation of CRM1 as therapeutic target. [Read the Full Post]

Selinexor-induced thrombocytopenia results from inhibition of thrombopoietin signaling in early megakaryopoiesis

3 | Oct 10 2019

Machlus KR et al. revealed (1) the mechanism of selinexor-induced thrombocytopenia, (2) an effective way to reverse the dose-limiting thrombocytopenia, and (3) a novel role for XPO1 in megakaryopoiesis. The improved selinexor dosing regimen described herein is crucial to help reduce thrombocytopenia in selinexor patients, allowing them to continue their course of chemotherapy and have the best chance of survival. [Read the Full Post]

Some gating potentiators, including VX-770, diminish ΔF508-CFTR functional expression

7 | Sep 29 2019

Veit G et al. indicated that VX-770 diminished the folding efficiency and the metabolic stability of ΔF508-CFTR at the endoplasmic reticulum (ER) and post-ER compartments, respectively, causing reduced cell surface ΔF508-CFTR density and function. VX-770-induced destabilization of ΔF508-CFTR was influenced by second-site suppressor mutations of the folding defect and was prevented by stabilization of the nucleotide-binding domain 1 (NBD1)-NBD2 interface. The reduced correction efficiency of ΔF508-CFTR, as well as of two other processing mutations in the presence of VX-770, suggests the need for further optimization of potentiators to maximize the clinical benefit of corrector-potentiator combination therapy in CF. [Read the Full Post]

Bafilomycin A1 disrupts autophagic flux by inhibiting both V-ATPase-dependent acidification and Ca-P60A/SERCA-dependent autophagosome-lysosome fusion

31 | Sep 07 2019

Mauvezin C et al. identified the ER-calcium ATPase Ca-P60A/dSERCA as a novel target of bafilomycin A1. Autophagosome-lysosome fusion was defective in Ca-P60A/dSERCA-depleted cells, and bafilomycin A1 induced a significant increase in cytosolic calcium concentration and disrupted Ca-P60A/SERCA-mediated fusion. Thus, bafilomycin A1 disrupts autophagic flux by independently inhibiting V-ATPase-dependent acidification and Ca-P60A/SERCA-dependent autophagosome-lysosome fusion. [Read the Full Post]

Treatment of γ-Hydroxybutyric Acid and γ-Butyrolactone Overdose with Two Potent Monocarboxylate Transporter 1 Inhibitors, AZD3965 and AR-C155858

23 | Aug 26 2019

Follman KE et al. indicated that inhibition of MCT1 is an effective treatment of GHB/GBL overdose. [Read the Full Post]

Inhibition of the amino-acid transporter LAT1 demonstrates anti-neoplastic activity in medulloblastoma

26 | Aug 10 2019

Cormerais Y et al. demonstrated that a long-term treatment with JPH203 does not lead to resistance in MB cells. Therefore, this study suggests that targeting LAT1 with JPH203 is a promising therapeutic approach for MB treatment. [Read the Full Post]

Bafilomycin A1 triggers proliferative potential of senescent cancer cells in vitro and in NOD/SCID mice

25 | Aug 01 2019

Was H et al. suggested that senescent cancer cells that appear during therapy, can be considered as dormant cells that contribute to cancer re-growth, when chemotherapeutic treatment is stopped. These data unveil new mechanisms of TIS-related cancer maintenance and re-population, triggered by a single pulse of BAF A1 treatment. [Read the Full Post]

Safety and efficacy of selinexor in relapsed or refractory multiple myeloma and Waldenstrom macroglobulinemia

76 | Mar 14 2019

Chen C et al. concluded that selinexor in combination with dexamethasone is active in heavily pretreated MM and propose a RP2D of 45 mg/m2 (80 mg) plus 20 mg dexamethasone given twice weekly. This trial was registered at clinicaltrials.gov as #NCT01607892. [Read the Full Post]

Selinexor (KPT-330) demonstrates anti-tumor efficacy in preclinical models of triple-negative breast cancer

96 | Mar 14 2019

Arango NP et al. showed that Selinexor demonstrated growth inhibition in all 14 TNBC cell lines tested; TNBC cell lines were more sensitive to selinexor (median IC50 44 nM, range 11 to 550 nM) than were estrogen receptor (ER)-positive breast cancer cell lines (median IC50 > 1000 nM, range 40 to >1000 nM; P = 0.017). In multiple TNBC cell lines, selinexor was synergistic with paclitaxel, carboplatin, eribulin, and doxorubicin in vitro. Selinexor as a single agent reduced tumor growth in vivo in four of five different TNBC PDX models, with a median tumor growth inhibition ratio (T/C: treatment/control) of 42% (range 31 to 73%) and demonstrated greater antitumor efficacy in combination with paclitaxel or eribulin (average T/C ratios of 27% and 12%, respectively). [Read the Full Post]

Loss of ARID1A expression leads to sensitivity to ROS-inducing agent elesclomol in gynecologic cancer cells

0 | Feb 16 2019

Kwan SY et al. demonstrated for the first time that loss of ARID1A leads to accumulation of ROS and suggest that elesclomol may be used to target ARID1A-mutant gynecologic cancer cells. [Read the Full Post]

Modeling Congenital Hyperinsulinism with ABCC8-Deficient Human Embryonic Stem Cells Generated by CRISPR/Cas9

105 | Feb 12 2019

Guo D et al. found that pancreatic differentiation of ABCC8-deficient cells recapitulated the CHI disease phenotype in vitro, which represents an attractive model to further elucidate the function of SUR1 and to develop and screen for novel therapeutic drugs. [Read the Full Post]

Effect of VX-770 in persons with cystic fibrosis and the G551D-CFTR mutation

130 | Jan 18 2019

Accurso FJ et al. evaluated the safety and adverse-event profile of VX-770 showed that VX-770 was associated with within-subject improvements in CFTR and lung function. These findings provide support for further studies of pharmacologic potentiation of CFTR as a means to treat cystic fibrosis. [Read the Full Post]

Tezacaftor-Ivacaftor in Residual-Function Heterozygotes with Cystic Fibrosis

147 | Jan 17 2019

Rowe SM et al. showed that CFTR modulator therapy with tezacaftor-ivacaftor or ivacaftor alone was efficacious in patients with cystic fibrosis who were heterozygous for the Phe508del deletion and a CFTR residual-function mutation. [Read the Full Post]

CFTR protects against vascular inflammation and atherogenesis in apolipoprotein E-deficient mice

121 | Jan 08 2019

Li Z et al. suggested that CFTR may present a potential therapeutic target for the treatment of vascular inflammation and development of atherosclerotic disease. [Read the Full Post]

Procaine Attenuates Pain Behaviors of Neuropathic Pain Model Rats Possibly via Inhibiting JAK2/STAT3

0 | Dec 28 2018

Li D et al. indicated that procaine is capable of attenuating NPP, suggesting procaine is a potential therapeutic strategy for treating NPP. Its role may be associated with the inhibition on JAK2/STAT3 signaling. [Read the Full Post]

Spinal Glutamate Transporters Are Involved in the Development of Electroacupuncture Tolerance

224 | Dec 16 2018

Cui L et al. indicated the participation of the spinal GTs in EAT. [Read the Full Post]

Transcriptomic profiling of a chicken lung epithelial cell line (CLEC213) reveals a mitochondrial respiratory chain activity boost during influenza virus infection

126 | Dec 10 2018

Meyer L et al. suggested that AIV is able to boost the metabolic capacities of its avian host in order to provide the important energy needs required to produce progeny virus. [Read the Full Post]

Cellular uptake pathways of sepiolite nanofibers and DNA transfection improvement

194 | Nov 27 2018

Castro-Smirnov FA et al. showed that sepiolite can be spontaneously internalized into mammalian cells through both non-endocytic and endocytic pathways, macropinocytosis being one of the main pathways. Interestingly, exposure of the cells to endocytosis inhibitors, such as chloroquine, two-fold increase the efficiency of sepiolite-mediated gene transfer, in addition to the 100-fold increased resulting from sepiolite sonomechanical treatment. As sepiolite is able to bind various biological molecules, this nanoparticulate silicate could be a good candidate as a nanocarrier for simultaneous vectorization of diverse biological molecules. [Read the Full Post]

Autophagy Plays an Important Role in Anti-inflammatory Mechanisms Stimulated by Alpha7 Nicotinic Acetylcholine Receptor

183 | Nov 23 2018

Shao BZ et al. demonstrated for the first time that activating α7nAChR enhances monocyte/microglia autophagy, which suppresses neuroinflammation and thus plays an alleviative role in EAE. [Read the Full Post]

Drug-protein hydrogen bonds govern the inhibition of the ATP hydrolysis of the multidrug transporter P-glycoprotein

0 | Nov 20 2018

Chufan EE et al. revealed that screening chemical compounds for their ability to inhibit the basal ATP hydrolysis can be a reliable tool to identify modulators with high affinity for P-gp. [Read the Full Post]

Myosin-IIA regulates leukemia engraftment and brain infiltration in a mouse model of acute lymphoblastic leukemia

149 | Nov 14 2018

Wigton EJ et al. implicated myosin-IIA as a key mediator of leukemia cell migration, making it a promising target to inhibit leukemia dissemination in vivo and potentially reduce leukemia relapses. [Read the Full Post]

High-expressing cystic fibrosis transmembrane conductance regulator interacts with histone deacetylase 2 to promote the development of Ph+ leukemia through the HDAC2-mediated PTEN pathway

0 | Oct 04 2018

Yan T et al. provides strong evidence that high-expression CFTR plays an important role in the development of Ph+ leukemia through the HDAC2-mediated PTEN pathway. [Read the Full Post]

Inhibiting PLK1 induces autophagy of acute myeloid leukemia cells via mammalian target of rapamycin pathway dephosphorylation

0 | Sep 17 2018

Tao YF et al. may provided new insights into the molecular mechanism of PLK1 in regulating autophagy. [Read the Full Post]

Dihydromyricetin promotes autophagy and apoptosis through ROS-STAT3 signaling in head and neck squamous cell carcinoma

553 | Sep 13 2018

Fan TF et al. found that inhibiting autophagy could enhance DHM-induced apoptosis in head and neck squamous cell carcinoma. [Read the Full Post]

Disruption of clathrin-dependent trafficking results in the failure of grass carp reovirus cellular entry

532 | Sep 08 2018

Wang H et al. suggested that GCRV might enter CIK cells via clathrin-mediated endocytosis in a pH-dependent manner. Additionally, dynamin is critical for efficient viral entry. [Read the Full Post]

PCSK9-deficiency does not alter blood pressure and sodium balance in mouse models of hypertension

326 | Sep 06 2018

Berger JM et al. found that PCSK9-deficiency did not alter both basal blood pressure and its increase in salt-insensitive (l-NAME) and salt-sensitive (Ang-II and DOCA-salt) hypertension models. [Read the Full Post]

Cyclopiazonic acid, an inhibitor of calcium-dependent ATPases with antiviral activity against human respiratory syncytial virus

0 | Sep 06 2018

Cui R et al. provide a new strategy for anti-RSV therapy via increasing intracellular calcium concentration. [Read the Full Post]

The Nonmetabolized β-Blocker Nadolol Is a Substrate of OCT1, OCT2, MATE1, MATE2-K, and P-Glycoprotein, but Not of OATP1B1 and OATP1B3

1138 | Sep 05 2018

Misaka S et al. indicated that these data will aid future in vivo studies on potential transporter-mediated drug-drug or drug-food interactions with involvement of nadolol. [Read the Full Post]

Structure-dependent complexation of Fe3+ by anthracyclines. 2. The roles of methoxy and daunosamine functionalities

344 | Aug 18 2018

Nawara K et al. illustrated the important role of methoxy and daunosamine moieties in anthracycline-iron(III) complex formation and stability. [Read the Full Post]

VCP inhibitors induce endoplasmic reticulum stress, cause cell cycle arrest, trigger caspase-mediated cell death and synergistically kill ovarian cancer cells in combination with Salubrinal

258 | Aug 12 2018

Bastola P et al. provided a proof-of-concept that VCP inhibitors can be used as a single agent and can be synergized with compounds that enhance CHOP expression to induce cell death in ovarian cancer cells. [Read the Full Post]

Acute hyperglycemia suppresses left ventricular diastolic function and inhibits autophagic flux in mice under prohypertrophic stimulation

368 | Jul 28 2018

Xie J et al. found that acute hyperglycemia suppresses diastolic function, damages mitochondrial energy signaling, and inhibits autophagic flux in prohypertrophic factor-stimulated cardiomyocytes. [Read the Full Post]

Hypoxia potentiates the cytotoxic effect of piperlongumine in pheochromocytoma models

574 | Jul 12 2018

Bullova P et al. reported for the first time that PL mediates PHEO cell death by activating both apoptosis and necroptosis in vitro and in vivo. This effect is magnified in hypoxic conditions, making PL a promising potential candidate for use as a therapeutic option for patients with PHEO/PGL, including those with SDHB mutations. [Read the Full Post]

Drug-protein hydrogen bonds govern the inhibition of the ATP hydrolysis of the multidrug transporter P-glycoprotein

512 | Jul 06 2018

Chufan EE et al. reveal that screening chemical compounds for their ability to inhibit the basal ATP hydrolysis can be a reliable tool to identify modulators with high affinity for P-gp. [Read the Full Post]

Loss of ARID1A expression leads to sensitivity to ROS-inducing agent elesclomol in gynecologic cancer cells

536 | Jun 20 2018

Kwan SY et al. demonstrated for the first time that loss of ARID1A leads to accumulation of ROS and suggest that elesclomol may be used to target ARID1A-mutant gynecologic cancer cells. [Read the Full Post]

Gp130-mediated STAT3 activation by S-propargyl-cysteine, an endogenous hydrogen sulfide initiator, prevents doxorubicin-induced cardiotoxicity

609 | May 11 2018

Wu J et al. offered a novel molecular basis and therapeutic strategy of H2S donor for the treatment of heart failure. [Read the Full Post]

Epigenetic Regulation of Interleukin 6 by Histone Acetylation in Macrophages and Its Role in Paraquat-Induced Pulmonary Fibrosis

1697 | Feb 06 2018

Hu L et al. indicated IL-6 functioning through EMT in PQ-induced pulmonary fibrosis was regulated dynamically by HDAC and HAT both in vitro and in vivo via epigenetically regulating chromatin accessibility. [Read the Full Post]

Oxidized Low-Density Lipoprotein-Induced Cyclophilin A Secretion Requires ROCK-Dependent Diphosphorylation of Myosin Light Chain

466 | Feb 01 2018

Su Z et al. indicated that ox-LDL-induced CyPA secretion requires vesicle transportation, actin remodeling and ROCK-dependent diphosphorylation of MLC. VSMC-derived CyPA induced by ox-LDL may be associated with increased CyPA expression in atherosclerotic lesions. [Read the Full Post]

Prospective identification of resistance mechanisms to HSP90 inhibition in KRAS mutant cancer cells

802 | Jan 20 2018

Rouhi A et al. identified potential mechanisms of acquired resistance to small molecules targeting HSP90 that may warrant proactive screening for additional HSP90 inhibitors or rational combination therapies. [Read the Full Post]

Weak binding to E3 ubiquitin ligase c-Cbl increases EGFRvA protein stability

588 | Dec 04 2017

Song F et al. found that EGFRvA is more stable than EGFR because of its decreased binding to c-Cbl. [Read the Full Post]

Tissue-specific variation in nonsense mutant transcript level and drug-induced read-through efficiency in the Cln1(R151X) mouse model of INC

528 | Nov 22 2017

Thada V et al. identified a new challenge/hurdle for read-through drug therapy: variable efficiency of read-through therapy in the different tissues/organs because of tissue-specific variations in nonsense mutant transcript levels. [Read the Full Post]

Impairment of Cargo Transportation Caused by gbf1 Mutation Disrupts Vascular Integrity and Causes Hemorrhage in Zebrafish Embryos

935 | Oct 25 2017

Chen J et al. showed that endothelial endoplasmic reticulum stress and subsequent apoptosis induced by gbf1 deficiency may account for the vascular collapse and hemorrhage. [Read the Full Post]

Nuclear Export of Ubiquitinated Proteins Determines the Sensitivity of Colorectal Cancer to Proteasome Inhibitor

521 | Oct 20 2017

Wu T et al. indicated that nuclear p53 is a major mediator in the synergistic antitumor effect of bortezomib and KPT330, and provides a rationale for the use of proteasome inhibitor together with nuclear export blocker in the treatment of colorectal cancer. It is conceivable that targeting nuclear exportation may serve as a novel strategy to overcome resistance and raise chemotherapeutic efficacy, especially for the drugs that activate the p53 system. [Read the Full Post]

Improved fluorescence assays to measure the defects associated with F508del-CFTR allow identification of new active compounds

0 | Oct 15 2017

Langron E et al. showed that most known potentiators have a negative influence on F508del-CFTR biogenesis/stability, which means membrane exposure needs to be monitored early during the development of drugs targeting CFTR. The combined use of the two fluorescence assays described here provides a useful tool for the identification of improved potentiators and correctors. The assays could also prove useful for basic scientific investigations on F508del-CFTR, and other CF-causing mutations. [Read the Full Post]

Mechanistic Approaches to Improve Correction of the Most Common Disease-Causing Mutation in Cystic Fibrosis

602 | Oct 14 2017

Bali V et al. emphasized that stabilization of ΔF508 CFTR band B in the ER might improve its functional rescue by Orkambi. [Read the Full Post]

Tetrandrine has anti-adipogenic effect on 3T3-L1 preadipocytes through the reduced expression and/or phosphorylation levels of C/EBP-α, PPAR-γ, FAS, perilipin A, and STAT-3

638 | Oct 07 2017

Jang BC et al. show that tetrandrine has strong anti-adipogenic effect on 3T3-L1 preadipocytes and the effect is largely attributable to the reduced expression and/or phosphorylation levels of C/EBP-α, PPAR-γ, FAS, perilipin A, and STAT-3. [Read the Full Post]

Improved fluorescence assays to measure the defects associated with F508del-CFTR allow identification of new active compounds

781 | Oct 04 2017

Langron E et al. showed that most known potentiators have a negative influence on F508del-CFTR biogenesis/stability, which means membrane exposure needs to be monitored early during the development of drugs targeting CFTR. The combined use of the two fluorescence assays described here provides a useful tool for the identification of improved potentiators and correctors. The assays could also prove useful for basic scientific investigations on F508del-CFTR, and other CF-causing mutations. [Read the Full Post]

Procaine Attenuates Pain Behaviors of Neuropathic Pain Model Rats Possibly via Inhibiting JAK2/STAT3

1278 | Sep 21 2017

Li D et al. indicated that procaine is capable of attenuating NPP, suggesting procaine is a potential therapeutic strategy for treating NPP. Its role may be associated with the inhibition on JAK2/STAT3 signaling. [Read the Full Post]

P-glycoprotein confers acquired resistance to 17-DMAG in lung cancers with an ALK rearrangement

535 | Sep 20 2017

Kim HJ et al. observed that the growth-inhibitory effect of 17-DMAG was decreased in A549/PR and H460/PR cells generated to over-express P-gp by long-term exposure to paclitaxel, and these cells recovered their sensitivity to 17-DMAG through the inhibition of P-gp. [Read the Full Post]

Riluzole partially rescues age-associated, but not LPS-induced, loss of glutamate transporters and spatial memory

1077 | Sep 11 2017

Brothers HM et al. showed that highlight the therapeutic potential of reducing glutamatergic function upon memory impairment in neurodegenerative diseases associated with aging. [Read the Full Post]

Jatrophane Diterpenoids as Modulators of P-Glycoprotein-Dependent Multidrug Resistance (MDR): Advances of Structure-Activity Relationships and Discovery of Promising MDR Reversal Agents

0 | Jun 24 2017

Zhu J et al. showed that modifications beyond just increasing the lipophilicity of this class of Pgp inhibitors are beneficial to the activity. [Read the Full Post]

Mechanical stimulation orchestrates the osteogenic differentiation of human bone marrow stromal cells by regulating HDAC1

0 | Jun 01 2017

Wang J et al. found that mechanical stimulation orchestrates genes expression involved in the osteogenic differentiation of BMSCs via the direct regulation of HDAC1, and the therapeutic inhibition of HDAC1 may be an efficient strategy for enhancing bone formation under mechanical stimulation. [Read the Full Post]

Seminal plasma induces inflammation in the uterus through the γδ T/IL-17 pathway

2744 | May 15 2017

Song ZH et al. found a new mechanism by which seminal plasma could influence the inflammation in the uterus through the γδ T/IL-17 pathway to regulate the expression of various chemokines and cytokines. [Read the Full Post]

Structural and functional screening in human induced-pluripotent stem cell-derived cardiomyocytes accurately identifies cardiotoxicity of multiple drug types

0 | Mar 17 2017

Doherty KR et al. showed that a multi-parameter approach examining both cardiac cell health and function in hiPS-CM provides a comprehensive and robust assessment that can aid in the determination of potential cardiac liability. [Read the Full Post]

Structural and functional screening in human induced-pluripotent stem cell-derived cardiomyocytes accurately identifies cardiotoxicity of multiple drug types

1283 | Mar 16 2017

Doherty KR et al. found that a multi-parameter approach examining both cardiac cell health and function in hiPS-CM provides a comprehensive and robust assessment that can aid in the determination of potential cardiac liability. [Read the Full Post]

Jatrophane Diterpenoids as Modulators of P-Glycoprotein-Dependent Multidrug Resistance (MDR): Advances of Structure-Activity Relationships and Discovery of Promising MDR Reversal Agents

1866 | Dec 28 2016

Zhu J, et al found that compound 26, which exhibited a remarkable metabolic stability in vitro and a favorable antitumor effect in vivo, would serve as a promising lead for the development of new MDR reversal agents. [Read the Full Post]

Tetrandrine has anti-adipogenic effect on 3T3-L1 preadipocytes through the reduced expression and/or phosphorylation levels of C/EBP-α, PPAR-γ, FAS, perilipin A, and STAT-3

1174 | Nov 22 2016

Jang BC et al. showed that tetrandrine has strong anti-adipogenic effect on 3T3-L1 preadipocytes and the effect is largely attributable to the reduced expression and/or phosphorylation levels of C/EBP-α, PPAR-γ, FAS, perilipin A, and STAT-3. [Read the Full Post]

Mechanistic Approaches to Improve Correction of the Most Common Disease-Causing Mutation in Cystic Fibrosis

1125 | Nov 14 2016

Bali V et al. found that stabilization of ΔF508 CFTR band B in the ER might improve its functional rescue by Orkambi. [Read the Full Post]

Levetiracetam mitigates doxorubicin-induced DNA and synaptic damage in neurons

1816 | Oct 27 2016

Manchon JF et al. found that levetiracetam might be part of a valuable new approach for mitigating synaptic damage and, perhaps, for treating cognitive disturbances in cancer patients and survivors. [Read the Full Post]

Mechanical stimulation orchestrates the osteogenic differentiation of human bone marrow stromal cells by regulating HDAC1

4395 | Oct 27 2016

Wang J et al. found that mechanical stimulation orchestrates genes expression involved in the osteogenic differentiation of BMSCs via the direct regulation of HDAC1, and the therapeutic inhibition of HDAC1 may be an efficient strategy for enhancing bone formation under mechanical stimulation. [Read the Full Post]

Seminal plasma induces inflammation in the uterus through the γδ T/IL-17 pathway

1503 | Oct 13 2016

Song ZH et al. found a new mechanism by which seminal plasma could influence the inflammation in the uterus through the γδ T/IL-17 pathway to regulate the expression of various chemokines and cytokines. [Read the Full Post]

Two strategies to overcome eribulin resistance: pharmacokinetic imaging and nanoparticle delivery system

4444 | Nov 17 2014

Laughney et al. developed strategies of pharmacokinetic for to reveal drug-resistant mechanisms, and nanoparticle system to overcome the resistance. [Read the Full Post]

A new neurogenic receptor activator of P2Y1——Up4A

3739 | Nov 13 2014

Recently, researchers from Nevada School of Medicine found a novel factor, Up4A, may contribute in mediating enteric inhibitory neurotransmission of the intestines, acts through P2Y1 receptors and apamin-sensitive small-conductance SK channels. [Read the Full Post]

Tariquidar is a P glycoprotein inhibitor undergoing research

3588 | Jan 27 2014

Tariquidar (XR9576) is a potent and selective noncompetitive inhibitor of P-glycoprotein with Kd of 5.1 nM, reverses drug resistance in MDR cell Lines. [Read the Full Post]

Tariquidar is a P glycoprotein inhibitor undergoing research

3708 | Dec 30 2013

Tariquidar displays high-affinity binding to P-gp with Bmax of 275 pmol/mg. [Read the Full Post]

Zosuquidar is a compound of antineoplastic drug

3611 | Dec 30 2013

Zosuquidar (LY335979) is a potent modulator of P-glycoprotein-mediated multi-drug resistance with Ki of 60 nM. [Read the Full Post]

Brefeldin A used to enhance intracellular cytokine staining signals

2594 | Dec 23 2013

Brefeldin A is a lactone antibiotic and ATPase inhibitor for protein transport with IC50 of 0.2 μM in HCT 116 cells, induces cancer cell differentiation and apoptosis. [Read the Full Post]

LY335979 is a potent inhibitor that contains a cyclopropyldibenzosuberane moiety

3880 | Dec 16 2013

LY335979 competitively inhibits equilibrium binding of vinblastine to Pgp by blocking azidopine photoaffinity labeling of the Pgp in CEM/VLB100 plasma membranes. [Read the Full Post]

VX 770 is a drug approved for patients with a certain mutation of cystic fibrosis

2318 | Dec 09 2013

Ivacaftor (VX-770, Kalydeco) is a potentiator of CFTR targeting G551D-CFTR and F508del-CFTR with EC50 of 100 nM and 25 nM, respectively. [Read the Full Post]

VX809 is an experimental drug for the treatment of cystic fibrosis

2518 | Oct 28 2013

VX-809 acts at the level of the ER to allow a fraction of the F508del-CFTR to adopt a properly folded form, to exit the ER and mobilize to the cell surface for normal functioning. [Read the Full Post]

Tariquidar is a P glycoprotein inhibitor undergoing research as an adjuvant

3499 | Oct 23 2013

Tariquidar is a potent and selective noncompetitive inhibitor of P-glycoprotein with Kd of 5.1 nM, reverses drug resistance in MDR cell Lines. [Read the Full Post]

Ouabain isolated from plants is widely used by scientists in in vitro studies

2819 | May 30 2013

In many non rodent species, low concentrations of this substance (i.e., in the subnanomolar range) may stimulate the Na-K-ATPase. The mechanism of the stimulatory effect is not understood and remains controversial. Further, the issue in rodents is more complicated because there are different isoforms of the Na-K-ATPase - some of which are very sensitive to ouabain while others are not. [Read the Full Post]

Ouabain is found in the ripe seeds of African plants

2982 | May 14 2013

It is well understood that the classical mechanism of action of ouabain involves its binding to and inhibition of the plasma membrane Na+/K+-ATPase (sodium pump) especially at the higher concentrations attainable in vitro or with intravenous dosage. [Read the Full Post]

Tolbutamide is a type of medicine called a sulphonylurea

2701 | Feb 17 2013

Surgery was performed using aseptic procedures. Anaesthesia was induced using ketamine, which was followed by 2 C5% isofluorane Tolbutamide mixed with oxygen administered by inhalation for the length of the surgical procedure. The skin and fascia were removed from the dorsal surface of the skull. [Read the Full Post]

Tolbutamide is a first generation potassium channel blocker

2614 | Feb 01 2013

Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by excessive and chronic activation of inflammatory pathways via immune Tolbutamide complex deposition, complement activation, and Fc receptor (FcR) ligation, often leading to significant clinical pathologies including glomerulonephritis [Read the Full Post]

Oligomycin A CGMP or cAMP in the lysates were by radioimmunoassay

3643 | Oct 23 2012

CGMP or cAMP in the lysates were by radioimmunoassay of cGMP from Amersham or with protein kinase type I muscle beef, each determined. Activity t and PIP3 [Read the Full Post]