Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA.
Oxid Med Cell Longev. 2019 Feb 6;2019:4278658. doi: 10.1155/2019/4278658. eCollection 2019.
Radiation-induced fibrosis (RIF) develops months to years after initial radiation exposure. RIF occurs when normal fibroblasts differentiate into myofibroblasts and lay down aberrant amounts of extracellular matrix proteins. One of the main drivers for developing RIF is reactive oxygen species (ROS) generated immediately after radiation exposure. Generation of ROS is known to induce epigenetic changes and cause differentiation of fibroblasts to myofibroblasts. Several antioxidant compounds have been shown to prevent radiation-induced epigenetic changes and the development of RIF. Therefore, reviewing the ROS-linked epigenetic changes in irradiated fibroblast cells is essential to understand the development and prevention of RIF.
辐射诱导纤维化(RIF)在初次辐射暴露数月至数年后发展。当正常成纤维细胞分化为肌成纤维细胞并沉积异常数量的细胞外基质蛋白时,就会发生 RIF。导致 RIF 发展的主要因素之一是辐射暴露后立即产生的活性氧(ROS)。众所周知,ROS 的产生会诱导表观遗传变化,并导致成纤维细胞向肌成纤维细胞分化。已经有几种抗氧化化合物被证明可以预防辐射诱导的表观遗传变化和 RIF 的发展。因此,回顾辐照成纤维细胞中与 ROS 相关的表观遗传变化对于理解 RIF 的发展和预防至关重要。
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