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Proliferation of functional human natural killer cells with anti‐HIV‐1 activity in NOD/SCID/Jak3null mice
Authors:Shinichiro Hattori  Kouki Matsuda  Ryusho Kariya  Seiji Okada
Affiliation:Division of Hematopoiesis, Center for AIDS Research, Kumamoto University, Kumamoto, Japan
Abstract:Natural killer cells, a critical component of the innate immune system, eradicate both virus‐infected cells and tumor cells through cytotoxicity and secretion of cytokines. Human NK cell research has largely been based on in vitro studies because of the lack of appropriate animal models. In this study, a selective proliferation model of functional human NK cells was established in NOD/SCID/Jak3null (NOJ) mice transplanted with peripheral blood mononuclear cells (PBMC) and K562 cells. The antiviral effects of NK cells were evaluated by challenging this mouse model with HIV‐1. The percentage of intracellular p24+ T cells and the amount of plasma p24 was decreased compared with NOJ mice transplanted with PBMC. Our findings indicate that NK cells have an anti‐HIV‐1 effect through direct cytotoxicity against HIV‐1‐infected cells. These mice provide an important model for evaluating human NK function against human infectious diseases such as HIV‐1 and malignancies.
Keywords:HIV‐1  innate immunity  mouse model  natural killer cells
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