생명과학회지 (Journal of Life Science)

  • 제21권9호
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  • Pages.1234-1243
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  • 2011
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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DOI QR코드

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맥문동(Liriope platyphylla)의 새로운 부탄올 추출물인 LP-M이 Akt/ERK NGF receptor signaling pathway를 통해 뇌조직에서 신경세포의 생존과 성장에 미치는 영향에 관한 연구

LP-M, a Novel Butanol-Extracts Isolated from Liriope platyphylla, could Induce the Neuronal Cell Survival and Neuritic Outgrowth in Hippocampus of Mice through Akt/ERK Activation on NGF Signal Pathway

  • 남소희 (부산대학교 생명자원과학대학 바이오소재과학과) ;
  • 최선일 (부산대학교 생명자원과학대학 바이오소재과학과) ;
  • 구준서 (부산대학교 생명자원과학대학 바이오소재과학과) ;
  • 김지은 (부산대학교 생명자원과학대학 바이오소재과학과) ;
  • 이연경 (부산대학교 생명자원과학대학 바이오소재과학과) ;
  • 황인식 (부산대학교 생명자원과학대학 바이오소재과학과) ;
  • 이혜련 (부산대학교 생명자원과학대학 바이오소재과학과) ;
  • 이영주 (부산대학교 생명자원과학대학 바이오소재과학과) ;
  • 이홍구 (부산대학교 생명자원과학대학 동물생명자원과학과) ;
  • 최영환 (부산대학교 생명자원과학대학 원예생명과학과) ;
  • 황대연 (부산대학교 생명자원과학대학 바이오소재과학과)
  • Nam, So-He (Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University) ;
  • Choi, Sun-Il (Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University) ;
  • Goo, Jun-Seo (Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University) ;
  • Kim, Ji-Eun (Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University) ;
  • Lee, Yoen-Kyung (Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University) ;
  • Hwang, In-Sik (Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University) ;
  • Lee, Hye-Ryun (Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University) ;
  • Lee, Young-Ju (Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University) ;
  • Lee, Hong-Gu (Department of Animal Science, College of Natural Resources & Life Science, Pusan National University) ;
  • Choi, Young-Whan (Department of Horticultural Bioscience, College of Natural Resources & Life Science, Pusan National University) ;
  • Hwang, Dae-Youn (Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University)
  • 투고 : 2011.03.31
  • 심사 : 2011.08.31
  • 발행 : 2011.09.30
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초록

맥문동(Liriope platyphylla)은 동양의학에서 오래 동안 항염증제, 당뇨 혹은 비만 치료제, 그리고 신경세포활성화 약제로 사용되어 왔다. 본 연구에서는 맥문동으로부터 NGF의 발현을 촉진하는 새로운 물질을 개발하고 이들의 작용기전을 밝히기 위하여 맥문동으로부터 13가지의 새로운 추출물을 확보하고 이들의 기능을 세포주와 마우스 실험을 통해 분석하였다. 그 결과, 상대적으로 세포독성이 낮고 NGF의 분비량이 많은 LP-E, LP-M, LP-M50, LP2E17PJ 등 4가지 추출물을 확보하였다. 또한 이들 중에서 LP2E17PJ를 제외한 3가지 추출물에 의해 분비된 NGF는 PC12세포의 neuritic outgrowth를 촉진하였다. 더불어 추출방법과 추출량의 측면에서 효과적인 LP-M을 C57BL/6 마우스에 2주간 투여하여 뇌조직에서 NGF mRNA의 발현을 확인하였다. LP-M은 오직 피질에서만 두 종류의 receptor 중에서 low affinity receptor를 통한 억제신호를 전달하였으며, 해마에서는 유의적인 변화를 유도하지 못했다. 그러나 high affinity receptor를 통한 신호전달은 해마에서만 활성화 신호를 전달하였고 피질에서는 변화를 유도하지 못했다. 이러한 결과는 맥문동 추출물인 LP-M은 마우스 대뇌의 해마에서 high affinity receptor를 통한 신호전달을 통해 neuritic outgrowth를 촉진함을 확인하였다.

Liriope platyphylla has been used in oriental medicine as an effective medical plant to improve symptoms of cough, sputum production, neurodegenerative disorders, obesity and diabetes for long time. In order to investigate the effects of novel extracts on nerve growth factors (NGF)-stimulated neuritic outgrowth, the alteration of NGF expression and NGF receptor signaling pathway were detected in neuroblastoma cells and C57BL/6 mice. Of a total of 13 novel extracts, 4 extracts (LP-E, LP-M, LP-M50, LP2E17PJ) showed high viability on MTT assay. Also, all of these extracts induced NGF secretion and NGF mRNA expression in neuroblastoma cells. However, the NGF-induced neuritic outgrowth from PC12 cells was only stimulated by LP-E, LP-M and LP-M50. Furthermore, we selected LP-M as a best candidate, based on method and amounts of extraction, in order to verify its effect in mice. C57BL/6 mice were treated with 50 mg/kg of LP-M for 2 weeks and the effects on NGF regulation were analyzed with various methods. The expression of NGF mRNA was significantly increased in LP-M treated mice compared to vehicle treated mice. Also, the signaling pathway of p75NTR was inhibited in the cortex by LP-M treatment, with no change in the hippocampus of brain. However, the signaling pathway of TrkA was dramatically activated in only hippocampus via LP-M treatment. Therefore, these results suggest that the novel four extracts of L. platyphylla may contribute to the regulation of NGF expression and secretion in neuronal cells. LP-M was especially considered to be an excellent candidate for a neurodegenerative disease-therapeutic drug.

키워드

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  2. Effects of an Aqueous Extract of Asparagus cochinchinensis on the Regulation of Nerve Growth Factor in Neuronal Cells vol.26, pp.5, 2016, https://doi.org/10.5352/JLS.2016.26.5.509
  3. Single-dose Intravenous Toxicology Testing of Daebohwalryeok Pharmcopuncture in Sprague-Dawley Rats vol.18, pp.2, 2015, https://doi.org/10.3831/KPI.2015.18.014
  4. Toxicity of redLiriope platyphyllamanufactured by steaming process on liver and kidney organs of ICR mice vol.28, pp.4, 2012, https://doi.org/10.5625/lar.2012.28.4.229