Inhibitory Effect of Lemon Oil on Apoptosis in Astrocytes

신경교(神經膠) 성상세포(星狀細胞)에서 레몬오일에 의한 세포자멸사(細胞自滅死)의 억제효과(抑制效果)

  • Kim, Jun-Han (Dept. of Neuropsychiatry, College of Oriental Medicine, Won Kwang University) ;
  • Kim, Tae-Heon (Dept. of Neuropsychiatry, College of Oriental Medicine, Won Kwang University)
  • 김준한 (원광대학교 한의과대학 신경정신과학교실) ;
  • 김태헌 (원광대학교 한의과대학 신경정신과학교실)
  • Published : 2000.09.30

Abstract

We investigated the effects of lemon pure essential oils on the heat shock-induced apoptosis in human astrocyte cell line CCF-STTG1. In previous studies, hear shock has been reported to induce the apoptosis or programmed cell death through the activation of caspase-3. Treatment of CCF-STTG1 cells with heat shock markedly induced apoptotic cell death as determined by flow cytometry. Interestingly, pretreatment of CCF-STTG1 cells with lemon pure essential oils inhibited the heat shock-induced apoptosis. Lemon also inhibited the heat shock-induced apoptosis in primary cultured rat astrocytes. To determine whether lemon inhibits the heat shock-induced activation of these apoptotic proteases, activation of CPP32 was assessed by Western blotting. Consistent with flow cytometry, DNA fragmentation and giemsa staining, heat shock-induced activation of CPP32 was blocked by lemon pure essential oil. PARP, cysteine protease substrates were fragmented as a consequence of apoptosis by heat shock. Lemon oil inhibited the PARP fragmentation. This essential oil also inhibited the heat shock-induced activation of caspase-3. These results suggest that lemon pure essential oils may modulate the apoptosis through the activation of the ICE-like caspases.

Keywords

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