Antioxidant action of hypoxic conditioned media from adipose-derived stem cells in the hepatic injury of expressing higher reactive oxygen species

• Published in: Annals of surgical treatment and research 2019, 97(4), , pp.159-167
• Main Authors: Hong, Ha-Eun, Kim, Ok-Hee, Kwak, Bong Jun, Choi, Ho Joong, Im, Kee-Hwan, Ahn, Joseph, Kim, Say-June
• Format: Article
• Language: English
• Subjects: Original; 일반외과학
• ISSN: 2288-6575; 2288-6796
• DOI: 10.4174/astr.2019.97.4.159

Almost all liver diseases are known to be accompanied by increased levels of reactive oxygen species (ROS), regardless of the cause of the liver disorder. However, little is known about the role of hypoxic conditioned media (HCM) in the view of pro-oxidative/antioxidative balance. Normoxic conditioned media (NCM) and HCM were obtained after culturing adipose-derived stem cells in 20% O or 1% O for 24 hours, respectively. Their effects on the expression of various markers reflecting pro-oxidative/antioxidative balance were investigated in both (thioacetamide-treated AML12 cells) and (partially hepatectomized mice) models of liver injury, respectively. HCM treatment induced the higher expression of antioxidant enzymes, such as superoxide dismutase, glutathione peroxidase, and catalase than did NCM in the model of liver injury. We also found that HCM increased the expression of nuclear factor erythroid 2-related factor (NRF2). The models of liver injury consistently validated the phenomenon of upregulated expression of antioxidant enzymes by HCM. We thus could conclude that HCM provides protection against ROS-related toxicity by increasing the expression of antioxidant enzymes, in part by releasing NRF2 in the injured liver.