Primary Involvement of NADPH Oxidase 4 in Hypoxia-Induced Generation of Reactive Oxygen Species in Adipose-Derived Stem Cells

    December 2011 in “ Stem Cells and Development ”
    Ji Hye Kim, Seung Yong Song, Sang Gyu Park, Sun U. Song, Ying Xia, Jong-Hyuk Sung
    TLDR NADPH oxidase 4 is key for stem cell activity and growth under low oxygen.
    The study explored the role of NADPH oxidase 4 (Nox4) in generating reactive oxygen species (ROS) in adipose-derived stem cells (ASCs) under hypoxic conditions. It found that Nox4 was the primary source of ROS, crucial for ASC proliferation, migration, and expression of stemness genes Oct4 and Rex1. Silencing Nox4 reduced ROS levels, ASC functions, and phosphorylation of signaling molecules, highlighting Nox4's role in hypoxia-enhanced ASC activity. The study suggested that modulating ROS through Nox4 could enhance ASC regenerative capacity, offering potential therapeutic applications.
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