Dynaflow Resolve Science

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Selected publications

Rational antibody design for undruggable targets using kinetically controlled biomolecular probes

Important drug targets, such as ion channels and G protein–coupled receptors, are difficult to address using current antibody technologies. Trkulja et al. used kinetically controlled proteases and microfluidic techniques to identify antibody binding sites on native and disease-relevant proteins. Applying molecular level epitope information, the authors were able to produce high-affinity antibodies with programmed pharmacological function. In the article, Trkulja et al. demonstrate the technique by creating the first stimulus-selective monoclonal antibodies targeting the transient receptor potential vanilloid 1 (TRPV1) channel, a clinically validated pain target widely considered undruggable with antibodies. In their research, the authors use Dynaflow Resolve to measure the impact of the antibodies on TRPV1 activity.

Carolina L. Trkulja, Oscar Jungholm, Max Davidson, Kent Jardemark, Monica M. Marcus, Jessica Hägglund, Anders Karlsson, Roger Karlsson, Joseph Bruton, Niklas Ivarsson, Sreesha P. Srinivasa, Alexandra Cavallin, Peder Svensson, Gavin D. M. Jeffries, Maria-Nefeli Christakopoulou,  Anna Reymer, Anaswara Ashok, Gabriella Willman, Daniela Papadia, Emma Johnsson, Owe Orwar

Science Adances. 7, 2021. DOI: 10.1126/sciadv.abe6397 

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Structural basis of α-scorpion toxin action on Nav channels

Fast inactivation of voltage-gated sodium (Nav) channels is essential for electrical signaling, but its mechanism remains poorly understood. Researchers at Genentech Inc. used electron microscopy to determine the structure of eukaryotic Nav channel alone and in complex with a lethal α-scorpion toxin (AaH2). The researchers show that AaH2 traps the ion channel in a deactivated state by lodging itself into the voltage-sensing domain of the ion channel, thereby preventing fast deactivation. In their work, the researchers use Dynaflow Resolve to study the activation of different forms of the Nav channel, with and without AaH2 binding.

Thomas Clairfeuille, Alexander Cloake, Daniel T. Infield, José P. Llongueras, Christopher P. Arthur, Zhong Rong Li, Yuwen Jian, Marie-France Martin-Eauclaire, Pierre E. Bougis, Claudio Ciferri, Christopher A. Ahern, Frank Bosmans, David H. Hackos, Alexis Rohou, Jian Payandeh

Science. 363, 2019. DOI: 10.1126/science.aav8573

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ABCC9-related Intellectual disability Myopathy Syndrome is a KATP channelopathy with loss-of-function mutations in ABCC9

Mutations in genes encoding KATP channel subunits have been reported for pancreatic disorders and Cantú syndrome. Smeland et al. report a syndrome in six patients from two families with consistent phenotype, which includes mild intellectual disability, myopathy and cerebral white matter hyperintensities. The patients are homozygous for a mutation that results in non-functional KATP channels in recombinant assay. Loss of function in the SUR2 subunit of KATP channel, which is the area affected by the mutation, is associated with fatigability and cardiac dysfunction in mice, and reduced activity, cardiac dysfunction and ventricular enlargement in zebrafish. The researchers term this disability resulting from loss-of-function of SUR2-containing KATP channels ABCC9-related Intellectual disability Myopathy Syndrome (AIMS) In their work, the researchers used Dynaflow Resolve to measure KATP channel activity.

Marie F. Smeland, Conor McClenaghan, Helen I. Roessler, Sanne Savelberg, Geir Åsmund Myge Hansen, Helene Hjellnes, Kjell Arne Arntzen, Kai Ivar Müller, Andreas Rosenberger Dybesland, Theresa Harter, Monica Sala-Rabanal, Chris H. Emfinger, Yan Huang, Soma S. Singareddy, Jamie Gunn, David F. Wozniak, Attila Kovacs, Maarten Massink, Federico Tessadori, Sarah M. Kamel, Jeroen Bakkers, Maria S. Remedi, Marijke Van Ghelue, Colin G. Nichols, Gijs van Haaften

Nature Communications. 10, 2019. DOI: 10.1038/s41467-019-12428-7

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List of Dynaflow publications

Torbjörn Bäckström, Sara K. S. Bengtsson, Jessica Sjöstedt, Evgenya Malinina, Maja Johansson, Gianna Ragagnin, Karin Ekberg and Per LundgrenIsoallopregnanolone Inhibits Estrus Cycle-Dependent Aggressive BehaviorBiomolecules202310.3390/biom13061017
Niina Jalava, Janne Kaskinoro, Hugh Chapman, Miguel Morales, Hanna Metsänkylä, Satu-Maarit Heinonen and Ari-Pekka KoivistoInhibition of Canonical Transient Receptor Potential Channels 4/5 with Highly Selective and Potent Small-Molecule HC-070 Alleviates Mechanical Hypersensitivity in Rat Models of Visceral and Neuropathic PainInt. J. Mol. Sci.202310.3390/ijms24043350
Roshni Das, Gianna Ragagnin, Jessica Sjöstedt, Maja Johansson, David Haage, Michael Druzin, Staffan Johansson, Torbjörn BäckströmMedroxyprogesterone acetate positively modulates specific GABAA-receptor subtypes - affecting memory and cognitionPsychoneuroendocrinology202210.1016/j.psyneuen.2022.105754
Trkulja, Carolina L., Jungholm, Oscar, Davidson, Max, Jardemark, Kent, Marcus, Monica M., Hägglund, Jessica,Karlsson, Anders, Karlsson, Roger, Bruton, Joseph, Ivarsson, Niklas,Srinivasa, Sreesha P., Cavallin, Alexandra, Svensson, Peder, Jeffries, Gavin D. M., Christakopoulou, Maria-Nefeli, Reymer, Anna, Ashok, Anaswara, Willman, Gabriella, Papadia, Daniela, Johnsson, Emma, Orwar, OweRational antibody design for undruggable targets using kinetically controlled biomolecular probesScience Advances202110.1126/sciadv.abe6397
Wang, X. Daley, C. Gakhar, V. Henry Lange, H. ... JM, Uslaner.Pharmacological characterization of the novel and selective α7 nicotinic acetylcholine receptor positive allosteric modulator BNC375Journal of Pharmacology and Experimental Therapeutics202010.1124/jpet.119.263483
Steven J. McKerrall, Teresa Nguyen, Kwong Wah Lai, Philippe Bergeron, Lunbin Deng, Antonio DiPasquale, Jae H. Chang, Jun Chen, Tania Chernov-Rogan, David H. Hackos, Jonathan Maher, Daniel F. Ortwine, Jodie Pang, Jian Payandeh, William R. Proctor, Shannon D. Shields, Jennifer Vogt, Pengfei Ji, Wenfeng Liu, Elisa Ballini, Lilia Schumann, Glauco Tarozzo, Girish Bankar, Sultan Chowdhury, Abid Hasan, J. P. Johnson Jr., Kuldip Khakh, Sophia Lin, Charles J. Cohen, Christoph M. Dehnhardt, Brian S. Safina, and Daniel P. SutherlinStructure- and Ligand-Based Discovery of Chromane Arylsulfonamide Nav1.7 Inhibitors for the Treatment of Chronic PainJ. Med. Chem.201910.1021/acs.jmedchem.9b00141
Hanson, J. E. Ma, K. Elstrott, J. Weber, M. Saillet, S. Khan, A. S. ... Palop, J. J.GluN2A NMDA Receptor Enhancement Improves Brain Oscillations, Synchrony, and Cognitive Functions in Dravet Syndrome and Alzheimer's Disease Models.Cell Reports202010.1016/j.celrep.2019.12.030
Marie F. Smeland, Conor McClenaghan, Helen I. Roessler, Sanne Savelberg, Geir Åsmund Myge Hansen, Helene Hjellnes, Kjell Arne Arntzen, Kai Ivar Müller, Andreas Rosenberger Dybesland, Theresa Harter, Monica Sala-Rabanal, Chris H. Emfinger, Yan Huang, Soma S. Singareddy, Jamie Gunn, David F. Wozniak, Attila Kovacs, Maarten Massink, Federico Tessadori, Sarah M. Kamel, Jeroen Bakkers, Maria S. Remedi, Marijke Van Ghelue, Colin G. Nichols & Gijs van HaaftenABCC9-related Intellectual disability Myopathy Syndrome is a KATP channelopathy with loss-of-function mutations in ABCC9Nature Communications201910.1038/s41467-019-12428-7
Clairfeuille, T. Cloake, A. Infield, D. T. ... Hackos, D. H. Rohou, A. Payandeh, J.Structural basis of a-scorpion toxin action on Na v channelsScience201910.1126/science.aav8573
Shields, S., Deng, L., Reese, R., Dourado, M., Tao, J., Foreman, O., . . . Hackos, D.Insensitivity to pain upon adult-onset deletion of nav1.7 or its blockade with selective inhibitorsJournal of Neuroscience201810.1523/JNEUROSCI.1049-18.2018
Ng, T., Vandenberg, J., & Perry, M.Pharmacological Activation of hERG Potassium Channels in Congenital Long QT Syndrome 2: Activator Compound ICA-105574 and its Effects on Mutant hERG Potassium Channels in Long QT Syndrome 2Heart, Lung and Circulation201810.1016/j.hlc.2018.06.039
Wang, T., Brown, B., Deng, L., Sellers, B., Lupardus, P., Wallweber, H., . . . Hanson, J.A novel NMDA receptor positive allosteric modulator that acts via the transmembrane domain.Neuropharmacology201710.1016/j.neuropharm.2017.04.041
Volgraf, M., Sellers, B., Jiang, Y., Wu, G., Ly, C., Villemure, E., . . . Schwarz, J.Discovery of GluN2A-Selective NMDA Receptor Positive Allosteric Modulators (PAMs): Tuning Deactivation Kinetics via Structure-Based DesignJournal of Medicinal Chemistry201610.1021/acs.jmedchem.5b02010
Yamaguchi, Y., Nishide, K., Kato, M., Hata, Y., Mizumaki, K., Kinoshita, K., . . . Nishida, N.Glycine/serine polymorphism at position 38 influences KCNE1 subunit's modulatory actions on rapid and slow delayed rectifier K+ currents.Circulation Journal201410.1253/circj.CJ-13-1126
Trkulja, C. L. Jansson, E. T. Jardemark, K. Orwar, O.Probing Structure and Function of Ion Channels Using Limited Proteolysis and MicrofluidicsJournal of the American Chemical Society201410.1021/ja507285w
Jansson, E., Trkulja, C., Ahemaiti, A., Millingen, M., Dm Jeffries, G., Jardemark, K., & Orwar, O. Open Access Effect of cholesterol depletion on the pore dilation of TRPV1. Molecular Pain201310.1186/1744-8069-9-1
Al-Sabi, A., Kaza, S., Oliver Dolly, J., & Wang, J.Pharmacological characteristics of Kv1.1- And Kv1.2-containing channels are influenced by the stoichiometry and positioning of their α subunits.Biochemical Journal201310.1042/BJ20130297
Graef, J., Benson, L., Sidach, S., Wei, H., Lippiello, P., Bencherif, M., & Fedorov, N.Validation of a high-throughput, automated electrophysiology platform for the screening of nicotinic agonists and antagonists.Journal of Biomolecular Screening201310.1177/1087057112457414
Moaddel, R. Abdrakhmanova, G. Kozak, J. Jozwiak, K. Toll, L. Jimenez, L. ... Wainer, I.A method for bidirectional solution exchange—“Liquid bullet” applications of acetylcholine to α7 nicotinic receptorsEuropean Journal of Pharmacology201310.1016/J.EJPHAR.2012.11.023
Dinklo, T., Shaban, H., Thuring, J., Lavreysen, H., Stevens, K., Zheng, L., . . . Lesage, A.Characterization of 2-[[4-fluoro-3-(trifluoromethyl)phenyl]amino]-4-(4- pyridinyl)-5-thiazolemethanol (JNJ-1930942), a novel positive allosteric modulator of the α7 nicotinic acetylcholine receptor.Journal of Pharmacology and Experimental Therapeutics201110.1124/jpet.110.173245
Zhang, H., Akrouh, A., Kurata, H., Remedi, M., Lawton, J., & Nichols, C.HMR 1098 is not an SUR isotype specific inhibitor of heterologous or sarcolemmal KATP channels.Journal of Molecular and Cellular Cardiology201110.1016/j.yjmcc.2010.12.011
Gever, J., Soto, R., Henningsen, R., Martin, R., Hackos, D., Panicker, S., . . . Ford, A.AF-353, a novel, potent and orally bioavailable P2X3/P2X2/3 receptor antagonist.British Journal of Pharmacology201010.1111/j.1476-5381.2010.00796.x
Al-Sabi, A., Shamotienko, O., Ni Dhochartaigh, S., Muniyappa, N., Le Berre, M., Shaban, H., . . . Oliver Dolly, J.Arrangement of Kv1 α subunits dictates sensitivity to tetraethylammonium.Journal of General Physiology201010.1085/jgp.200910398
Leech, Colin A.
Dzhura, Igor
Chepurny, Oleg G.
Schwede, Frank
Genieser, Hans G.
Holz, George G.
Facilitation of β-cell KATP channel sulfonylurea sensitivity by a cAMP analog selective for the cAMP-regulated guanine nucleotide exchange factor EpacIslets201010.4161/isl.2.2.10582
Kurata, H., Rapedius, M., Kleinman, M., Baukrowitz, T., & Nichols, C. Voltage-dependent gating in a "voltage sensor-less" ion channel.PLoS Biology201010.1371/journal.pbio.1000315
Ghiron, C. Haydar, S. N. Aschmies, S. Bothmann, H. Castaldo, C. Cocconcelli, G. ... Zanelli, U.Novel Alpha-7 Nicotinic Acetylcholine Receptor Agonists Containing a Urea Moiety: Identification and Characterization of the Potent, Selective, and Orally Efficacious Agonist 1-[6-(4-Fluorophenyl)pyridin-3-yl]-3-(4-piperidin-1-ylbutyl) Urea (SEN34625/WYE-103914)
Journal of Medicinal Chemistry201010.1021/jm901692q
Liu, C. Somps, C.Telithromycin blocks neuromuscular transmission and inhibits nAChR currents in vitroToxicology Letters201010.1016/J.TOXLET.2010.02.005
Fedorov, N., Benson, L., Graef, J., Lippiello, P., & Bencherif, M.Differential pharmacologies of mecamylamine enantiomers: Positive allosteric modulation and noncompetitive. Journal of Pharmacology and Experimental Therapeutics.200910.1124/jpet.108.146910
Olofsson, J., Bridle, H., Jesorka, A., Isaksson, I., Weber, S., & Orwar, O.Direct access and control of the intracellular solution environment in single cellsAnalytical Chemistry200910.1021/ac802081m
Stanojevic, V., Habener, J., Holz G., Leech, C.Cytosolic adenylate kinases regulate K-ATP channel activity in human β-cellsBiochemical and Biophysical Research Communications200810.1016/j.bbrc.2008.01.109
Flagg, T., Kurata, H., Masia, R., Caputa, G., Magnuson, M., Lefer, D., . . . Nichols, C.Differential structure of atrial and ventricular KATP: Atrial KATP channels require SUR1.Circulation Research200810.1161/CIRCRESAHA.108.178186
Matulef, K., Howery, A., Tan, L., Kobertz, W., Bois, J., & Maduke, M.Discovery of potent CLC chloride channel inhibitors.ACS Chemical Biology200810.1021/cb800083a
Brown, A., Liao, Z., & Goodman, M.MEC-2 and MEC-6 in the Caenorhabditis elegans sensory mechanotransduction complex: Auxiliary subunits that enable channel activity.Journal of General Physiology200810.1085/jgp.200709910
Kang, G., Leech, C., Chepurny, O., Coetzee, W., & Holz, G. Role of the cAMP sensor Epac as a determinant of KATP channel ATP sensitivity in human pancreatic β-cells and rat INS-1 cells.Journal of Physiology200810.1113/jphysiol.2007.143818
Brown, A. L. Liao, Z. Goodman, M. B.MEC-2 and MEC-6 in the Caenorhabditis elegans Sensory Mechanotransduction Complex: Auxiliary Subunits that Enable Channel ActivityJournal of General Physiology 200810.1085/jgp.200709910
Brown, A., Fernandez-Illescas, S., Liao, Z., & Goodman, M.Gain-of-function mutations in the MEC-4 DEG/ENaC sensory mechanotransduction channel alter gating and drug blockade. Journal of General Physiology200710.1085/jgp.200609672
Sinclair, J., Granfeldt, D., Pihl, J., Millingen, M., Lincoln, P., Farre, C., . . . Orwar, O.A biohybrid dynamic random access memory.Journal of the American Chemical Society200610.1021/ja0580993
Borghese, C., Werner, D., Topf, N., Baron, N., Henderson, L., Boehm, S., . . . Harrison, N. (2006).An isoflurane- and alcohol-insensitive mutant GABAA receptor α1 subunit with near-normal apparent affinity for GABA: Characterization in heterologous systems and production of knockin mice.Journal of Pharmacology and Experimental Therapeutics200610.1124/jpet.106.104406
Granfeldt, D., Sinclair, J., Millingen, M., Farre, C., Lincoln, P., & Orwar, O.Controlling desensitized states in ligand-receptor interaction studies with cyclic scanning patch-clamp protocols.Analytical Chemistry200610.1021/ac060812z
Olofsson, J. Bridle, H. Sinclair, J. Granfeldt, D. Sahlin, E.
Orwar, Owe
A chemical waveform synthesizerPNAS200510.1073/pnas.0500230102
Persson, F., Carlsson, L., Duker, G., & Jacobson, I.Blocking characteristics of hERG, hNav1.5, and hKvLQT1/hminK after administration of the novel anti-arrhythmic compound AZD7009.Journal of Cardiovascular Electrophysiology200510.1046/j.1540-8167.2005.40427.x
Persson, F., Carlsson, L., Duker, G., & Jacobson, I.Blocking Characteristics of hKv1.5 and hKv4.3/hKChIP2.2 After Administration of the Novel Antiarrhythmic Compound AZD7009Journal of Cardiovascular Electrophysiology200510.1097/01.fjc.0000161405.37198.c1
Pihl, J. Sinclair, J. Sahlin, E. Karlsson, M. Petterson, F. Olofsson, J. Orwar,O.Microfluidic Gradient-Generating Device for Pharmacological ProfilingAnalytical Chemistry200510.1021/ac050218+
Hill, A. P. Perrin, M. J. Heide, J. Campbell, T. J. Mann, S. A.
Vandenberg, J. I.
Kinetics of Drug Interaction with the Kv11.1 Potassium ChannelMolecular Pharmacology200510.1124/mol.114.091835
Pihl, J. Karlsson, M. Chiu, D.Microfluidic technologies in drug discoveryDrug Discovery Today200510.1016/S1359-6446(05)03571-3
Olofsson, J., Pihl, J., Sinclair, J., Sahlin, E., Karlsson, M., & Orwar, O.A microfluidics approach to the problem of creating separate solution environments accessible from macroscopic volumes.Analytical Chemistry2004doi.org/10.1021/ac035527j
Sinclair, J., Pihl, J., Olofsson, J., Karlsson, M., Jardemark, K., Chiu, D., & Orwar, O. A cell-based bar code reader for high-throughput screening of ion channel-ligand interactions.Analytical Chemistry200210.1021/ac026133f