44 results about "Gated Ion Channel" patented technology

Methods of identifying activators and inhibitors of voltage-gated ion channels are provided in which the methods employ electrical field stimulation of the cells in order to manipulate the open / close state transition of the voltage-gated ion channels. This allows for more convenient, more precise experimental manipulation of these transitions, and, coupled with efficient methods of detecting the result of ion flux through the channels, provides methods that are especially suitable for high throughput screening.

The present invention provides novel chimeric receptors that have unique pharmacology. In particular, the chimeric receptors comprise a mutated ligand binding domain of the α7 nicotinic acetylcholine receptor fused to a transmembrane or channel domain from a ligand-gated ion channel protein. The mutations in the ligand binding domain confer selective binding of compounds. Methods of using the novel chimeric receptors of the invention as well as compounds that preferentially bind and activate the chimeric receptors are also disclosed.

The present invention relates to an isolated nucleic acid molecule comprising a nucleotide sequence coding for a depolarizing light-gated ion channel functionally linked to a promoter leading to the specific expression of said depolarizing light-gated ion channel in a retinal photoreceptor, or the nucleotide sequence complementary to said nucleotide sequence, for use in treating or ameliorating blindness. The present invention also relates to methods of using such nucleic acid molecules in the treatment of blindness.

This document relates to materials and methods for controlling ligand gated ion channel (LGIC) activity. For example, modified LGICs including at least one LGIC subunit having a modified ligand binding domain (LBD) and / or a modified ion pore domain (IPD) are provided. Also provided are exogenous LGIC ligands that can bind to and activate the modified LGIC, as well as methods of modulating ion transport across the membrane of a cell of a mammal, methods of modulating the excitability of a cell in a mammal, and methods of treating a mammal having a channelopathy.

The present inventions relates to the use of an isolated nucleic acid molecule comprising a nucleotide sequence coding for a hyperpolarizing light-gated ion channel or pump gene from an archeon or for a light-active fragment of said gene, or the nucleotide sequence complementary to said nucleotide sequence, for treating or ameliorating blindness. The light-gated ion channel or pump gene can be a halorhodopsin gene.

The present invention relates to a group of substituted-7-azabicyclo-[2.2.1]heptyl derivatives with biological activity. The present invention also relates to synthetic methods for producing said substituted-7-azabicyclo-[2.2.1]heptyl derivatives. The present invention also relates to certain intermediates for producing such substituted-7-azabicyclo-[2.2.1]heptyl derivatives, as well as a synthetic method for producing such intermediates. The present invention also relates to pharmaceutical compositions comprising such substituted-7-azabicyclo-[2.2.1]heptyl derivatives, as well as their use as medicaments for the treatment of diseases mediated by a Nicotinic Acetylcholine Receptor or a receptor being a member of the Neurotransmitter-gated Ion Channel Superfamily, such as pain, Alzheimer's disease, Parkinson's disease, schizophrenia, epilepsy and nicotine addiction.

The invention relates to the use of a light-gated ion channel for the manufacture of a medicament for the treatment of blindness and a method for expressing said cell specific fashion, e.g. in ON-bipolar cells, ON-ganglion cells, or AII amacrine cells.

The present invention describes a heteromultimeric proton-gated ion channel (herein called ASIC-2S.2) with distinctive properties. Compositions and methods are provided for producing and expressing functional ASIC-2S.2 channels, composed of ASIC2A and ASIC3 subunits. The invention also provides genetically engineered expression vectors comprising the nucleic acid sequences encoding both ASIC2A and ASIC3 and host cells coexpressing both ASIC2A and ASIC3 subunits. Also provided herein are genetically engineered nucleic acids encoding chimeric proton-gated ion channels comprised of at least two different subunits, as well as expression vectors and host cells comprising said engineered nucleic acids. The invention also provides for the use of ASIC-2S.2, as well as agonists, antagonists or antibodies specifically binding ASIC-2S.2, in the diagnosis, prevention and treatment of diseases associated with expression of ASIC-2S.2. Also are disclosed methods of influencing electrophysiological, pharmacological and / or functional properties of ASIC-2S.2 as well as methods for screening for substances having ion-channel modulating activity or substances capable of disrupting subunit association or interaction.

The present invention provides a novel human proton-gated ion channel (hASIC1B) and polynucleotides which identify and encode hASIC1B. The invention also provides genetically engineered expression vectors and host cells comprising the nucleic acid sequences encoding hASIC1B and a method for producing hASIC1B. The invention also provides for use of hASIC1B, and agonists, antibodies or antagonists specifically binding hASIC1B, in the prevention and treatment of diseases associated with expression of hASIC1B. Additionally, the invention provides for the use of antisense molecules to polynucleotides encoding of hASIC1B for the treatment of diseases associated with the expression of hASIC1B. The invention also provides diagnostic assays, which utilize the polynucleotides, or fragments or the complements thereof, and antibodies specifically binding hASIC1B.