Blockage of K(Ca)3.1 and Kv1.3 channels of the B lymphocyte decreases the inflammatory monocyte chemotaxis

International Immunopharmacology
Shuang-Xia ZhangChuan-Yu Gao

Abstract

To investigate the effects of Ca(2+) activated potassium channel KCa3.1 and voltage-gated potassium channel Kv1.3 of B lymphocyte on inflammatory monocytes chemotaxis and the potential mechanisms. Thanswell test was used to detect the inflammatory monocyte (Ly-6C(hi)) chemotaxis caused by the B lymphocyte. Enzyme-linked immunosorbent assay (ELISA) was applied to detecting the C-C motif ligand 7 (CCL7) in cultured media. Cell counting kit-8 (CCK) was used to detect the proliferation of B lymphocytes after activation and blockage of both KCa3.1 and Kv1.3 channels. Western blot was used to detect the expression of phosphorylated extracellular signal-regulated kinase (P-ERK) of the B lymphocytes. When activated, B lymphocytes significantly proliferated. After application of KCa3.1 channel-specific inhibitor TRAM-34 and potent Kv1.3 channel inhibitor ShK, both B lymphocytes proliferation and Ly-6C(hi) monocyte chemotaxis were significantly inhibited. The expression of chemotaxis related factor CCL7 decreased remarkably. The opening of KCa3.1 and Kv1.3 channels promote B lymphocyte activation, proliferation and Ly-6C(hi) monocyte chemotaxis. The increase of CCL7 secretion by B lymphocyte may explain the pro migration effects.

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Citations

Aug 3, 2018·Biological & Pharmaceutical Bulletin·Susumu Ohya, Hiroaki Kito
Oct 3, 2018·International Journal of Molecular Sciences·Jie Liang PhuaYingying Huang
Aug 14, 2019·Immunological Reviews·Trisha Mahtani, Bebhinn Treanor
May 28, 2021·Frontiers in Immunology·Rachael Y M RyanJohn J Miles

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