Abstract
Killer cell lectin-like receptor subfamily G member 1 (KLRG1), a type II transmembrane protein, was identified as an inhibitory receptor expressed on natural killer (NK) cells and certain T cells. The protein regulates effector functions and developmental processes in these cells. In this study, we established a specific and sensitive monoclonal antibody (mAb) for human KLRG1 (hKLRG1), which is useful for flow cytometry, using a Cell-Based Immunization and Screening (CBIS) method. The established anti-hKLRG1 mAb, KLMab-1 (mouse IgG1, kappa), reacted with overexpressed hKLRG1 in Chinese hamster ovary-K1 (CHO/hKLRG1) and human NK cells, which also expressed endogenous hKLRG1 as confirmed by flow cytometry. KLMab-1, which was established by the CBIS method, could be useful for elucidating the hKLRG1-related biological response by flow cytometry.
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