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Sodium channels enable fast electrical signaling and regulate phagocytosis in the retinal pigment epithelium.

Julia K Johansson | Viivi I Karema-Jokinen | Satu Hakanen | Antti Jylhä | Hannu Uusitalo | Maija Vihinen-Ranta | Heli Skottman | Teemu O Ihalainen | Soile Nymark
BMC biology | 2019

Voltage-gated sodium (Nav) channels have traditionally been considered a trademark of excitable cells. However, recent studies have shown the presence of Nav channels in several non-excitable cells, such as astrocytes and macrophages, demonstrating that the roles of these channels are more diverse than was previously thought. Despite the earlier discoveries, the presence of Nav channel-mediated currents in the cells of retinal pigment epithelium (RPE) has been dismissed as a cell culture artifact. We challenge this notion by investigating the presence and possible role of Nav channels in RPE both ex vivo and in vitro.

Pubmed ID: 31412898

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ATCC (tool)

RRID:SCR_001672

Global nonprofit biological resource center (BRC) and research organization that provides biological products, technical services and educational programs to private industry, government and academic organizations. Its mission is to acquire, authenticate, preserve, develop and distribute biological materials, information, technology, intellectual property and standards for the advancement and application of scientific knowledge. The primary purpose of ATCC is to use its resources and experience as a BRC to become the world leader in standard biological reference materials management, intellectual property resource management and translational research as applied to biomaterial development, standardization and certification. ATCC characterizes cell lines, bacteria, viruses, fungi and protozoa, as well as develops and evaluates assays and techniques for validating research resources and preserving and distributing biological materials to the public and private sector research communities.

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Thermo Fisher Scientific (tool)

RRID:SCR_008452

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RRID:SCR_008983

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Sigma-Aldrich (tool)

RRID:SCR_008988

American chemical, life science and biotechnology company owned by Merck KGaA. Merger of Sigma Chemical Company and Aldrich Chemical Company. Provides organic and inorganic chemicals, building blocks, reagents, advanced materials and stable isotopes for chemical synthesis, medicinal chemistry and materials science, antibiotics, buffers, carbohydrates, enzymes, forensic tools, hematology and histology, nucleotides, proteins, peptides, amino acids and their derivatives.

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Adobe Illustrator (tool)

RRID:SCR_010279

Vector graphics software to create digital graphics, illustrations, and typography for several types of media: print, web, interactive, video, and mobile.

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pClamp (tool)

RRID:SCR_011323

Software suite for electrophysiology data acquisition and analysis by Molecular Devices. Used for the control and recording of voltage clamp, current clamp, and patch clamp experiments. The software suite consists of Clampex 11 Software for data acquisition, AxoScope 11 Software for background recording, Clampfit 11 Software for data analysis, and optional Clampfit Advanced Analysis Module for sophisticated and streamlined analysis.

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Abcam (tool)

RRID:SCR_012931

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RRID:SCR_014199

Software for image processing, analysis, and editing. The software includes features such as touch capabilities, a customizable toolbar, 2D and 3D image merging, and Cloud access and options.

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nanoprobes.com (tool)

RRID:SCR_014323

A nanoparticle research collaborative which engineers nanoparticle products in order to find cures for cancer and other diseases. The gold labels produced are uncharged molecules which are cross-linked to specific sites on biomolecules. Labels can be attached to any molecule with a reactive group (proteins, peptides, oligonucleotides, small molecules and lipids) for detection and localization. New probes can be engineered based on any fragment of a naturally occurring biomolecule, and the label can be positioned away from the binding site so it does not interfere with binding.

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C57BL/6J (tool)

RRID:IMSR_JAX:000664

Mus musculus with name C57BL/6J from IMSR.

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ARPE-19 (tool)

RRID:CVCL_0145

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