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인체 신경세포에서 청뇌명신환(淸腦明神丸)의 산화적 스트레스에 대한 세포보호 효과

Neuroprotective Effects of Cheongnoemyeongsin-hwan against Hydrogen Peroxide-induced DNA Damage and Apoptosis in Human Neuronal-Derived SH-SY5Y Cells

  • 피국현 (동의대학교 한의과대학 내과학교실) ;
  • 황원덕 (동의대학교 한의과대학 내과학교실)
  • Pi, Guk Hyun (Department of Korean Internal Medicine, College of Korean Medicine, Dong-Eui University) ;
  • Hwang, Won Deuk (Department of Korean Internal Medicine, College of Korean Medicine, Dong-Eui University)
  • 투고 : 2017.02.06
  • 심사 : 2017.02.18
  • 발행 : 2017.02.28

초록

Objectives : Oxidative stress due to excessive accumulation of reactive oxygen species (ROS) is one of the risk factors for the development of several chronic diseases, including neurodegenerative diseases. Methods : In the present study, we investigated the protective effects of cheongnoemyeongsin-hwan (CNMSH) against oxidative stress‑induced cellular damage and elucidated the underlying mechanisms in neuronal-derived SH-SY5Y cells. Results : Our results revealed that treatment with CNMSH prior to hydrogen peroxide (H2O2) exposure significantly increased the SH-SY5Y cell viability, indicating that the exposure of the SH-SY5Y cells to CNMSH conferred a protective effect against oxidative stress. CNMSH also effectively attenuated H2O2‑induced comet tail formation, and decreased the phosphorylation levels of the histone ${\gamma}H2AX$, as well as the number of apoptotic bodies and Annexin V‑positive cells. In addition, CNMSH exhibited scavenging activity against intracellular ROS generation and restored the mitochondria membrane potential (MMP) loss that were induced by H2O2, suggesting that CNMSH prevents H2O2‑induced DNA damage and cell apoptosis. Moreover, H2O2 enhanced the cleavage of caspase-3 and degradation of poly (ADP-ribose)-polymerase, a typical substrate protein of activated caspase-3, as well as DNA fragmentation; however, these events were almost totally reversed by pretreatment with CNMSH. Furthermore, CNMSH increased the levels of heme oxygenase-1 (HO-1), which is a potent antioxidant enzyme, associated with the induction of nuclear factor-erythroid 2-related factor 2 (Nrf2). According to our data, CNMSH is able to protect SH-SY5Y cells from H2O2-induced apoptosis throughout blocking cellular damage related to oxidative stress through a mechanism that would affect ROS elimination and activating Nrf2/HO-1 signaling pathway. Conclusions : Therefore, we believed that CNMSH may potentially serve as an agent for the treatment and prevention of neurodegenerative diseases caused by oxidative stress.

키워드

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