Identification and functional characterization of voltage-gated sodium channels in lymphocytes. 2015

Weifeng Huang, and Chunjing Lu, and Yong Wu, and Shou Ouyang, and Yuanzhong Chen
Fujian Institute of Hematology, Fujian Medical University Union Hospital, Fuzhou 350004, PR China.

A variety of ion channels has been discovered in lymphocytes. RT-PCR and real-time PCR analysis revealed that ALL (acute lymphocytic leukemia) cell lines and human peripheral blood mononuclear cells mainly expressed TTX (tetrodotoxin)-sensitive voltage-gated sodium channels (VGSCs). Expression of VGSC protein was confirmed by western blots and Immunofluorescence. Whole-cell patch-clamp recordings showed that a sub-population (20%) of MOLT-4 cells expressed functional VGSCs, which were TTX-sensitive. Importantly, 2 μM TTX decreased the invasion of Jurkat and MOLT-4 cells ∼90%. These results indicate that the activity of VGSCs could represent a novel mechanism potentiating the invasive capacity of these cells.

UI MeSH Term Description Entries
D008213 Lymphocyte Activation Morphologic alteration of small B LYMPHOCYTES or T LYMPHOCYTES in culture into large blast-like cells able to synthesize DNA and RNA and to divide mitotically. It is induced by INTERLEUKINS; MITOGENS such as PHYTOHEMAGGLUTININS, and by specific ANTIGENS. It may also occur in vivo as in GRAFT REJECTION. Blast Transformation,Blastogenesis,Lymphoblast Transformation,Lymphocyte Stimulation,Lymphocyte Transformation,Transformation, Blast,Transformation, Lymphoblast,Transformation, Lymphocyte,Activation, Lymphocyte,Stimulation, Lymphocyte
D008214 Lymphocytes White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS. Lymphoid Cells,Cell, Lymphoid,Cells, Lymphoid,Lymphocyte,Lymphoid Cell
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002465 Cell Movement The movement of cells from one location to another. Distinguish from CYTOKINESIS which is the process of dividing the CYTOPLASM of a cell. Cell Migration,Locomotion, Cell,Migration, Cell,Motility, Cell,Movement, Cell,Cell Locomotion,Cell Motility,Cell Movements,Movements, Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012964 Sodium A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23. Sodium Ion Level,Sodium-23,Ion Level, Sodium,Level, Sodium Ion,Sodium 23
D015640 Ion Channel Gating The opening and closing of ion channels due to a stimulus. The stimulus can be a change in membrane potential (voltage-gated), drugs or chemical transmitters (ligand-gated), or a mechanical deformation. Gating is thought to involve conformational changes of the ion channel which alters selective permeability. Gating, Ion Channel,Gatings, Ion Channel,Ion Channel Gatings
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular
D061566 Voltage-Gated Sodium Channels A family of membrane proteins that selectively conduct SODIUM ions due to changes in the TRANSMEMBRANE POTENTIAL DIFFERENCE. They typically have a multimeric structure with a core alpha subunit that defines the sodium channel subtype and several beta subunits that modulate sodium channel activity. Voltage-Gated Sodium Channel,Sodium Channels, Voltage-Gated,Channel, Voltage-Gated Sodium,Channels, Voltage-Gated Sodium,Sodium Channel, Voltage-Gated,Sodium Channels, Voltage Gated,Voltage Gated Sodium Channel,Voltage Gated Sodium Channels

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