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오리나무유래 디아릴헵타노이드 허수테논의 T 세포활성억제 및 항아토피 효능연구

T-lymphocyte Inactivation and Anti-atopic Effects of Diarylheptanoid Hirsutenone Isolated from Alnus japonica

  • 이도익 (중앙대학교 약학대학 면역학과) ;
  • 서성준 (중앙대학교 의학대학 피부과) ;
  • 주성수 (강릉원주대학교 생명과학대학 해양분자생명공학과)
  • Lee, Do Ik (Department of Immunology, College of Pharmacy, Chung-Ang University) ;
  • Seo, Seong Jun (Department of Dermatology, College of Medicine, Chung-Ang University) ;
  • Joo, Seong Soo (Department of Marine Molecular Biotechnology, College of Life Science, Gangneung-Wonju National University)
  • 투고 : 2013.05.03
  • 심사 : 2013.06.27
  • 발행 : 2013.08.31

초록

본 연구에서는 오리나무유래 HST의 T 세포 비활성화 효능을 확인하고 그 기전을 탐색하여 새로운 항아토피 천연소재로의 개발 가능성을 제시하고자 하였다. HST는 T 세포 mitogen으로서 anti-CD3 mAb가 처리 된 마우스 비장에서 Th 사이토카인(IL-2, IFN-${\gamma}$, IL-4, IL-5, IL-10)의 발현을 효과적으로 억제하였으며, T 세포 early activation marker인 CD25 유전자 발현이 INCA-6에서 매우 효과적으로 억제되는 것으로 보아, NFAT inactivator-유사 NFAT 탈인산화 억제 기전을 가지는 것으로 예측되었다. 또한 세포주기조절 단백질인 p21과 p27의 유전자도 HST에 의해 upregulation이 되어 효과적인 T 세포 증식 및 분화를 억제할 것으로 생각되었다. 이러한 세포주기조절 효과는 AD를 악화시키는 세균인 S. aureus 성장억제 실험에서 확인되어 향후 항박테리아 효능을 갖는 우수한 항아토피피부염 천연소재로서 HST의 활용 가치가 높을 것으로 판단된다.

2Department of Marine Molecular Biotechnology, College of Life Science, Gangneung-Wonju National University Recently, we reported that diarylheptanoid hirsutenone (HST) effectively inactivated T lymphocytes. However, it has not been evaluated whether HST is involved in calcineurin or calmodulin inactivation. In the present study, cells were treated with T-cell inhibitors with or without HST. Our results revealed that HST successfully inhibited expression of T-helper type I (Th1) and Th2 cytokines. Co-treatment with HST and nuclear factor-activated T cell (NFAT) activation inhibitor III (INCA-6) showed a more sensitive effect than that with other inhibitors, suggesting that HST contributes to inhibition of dephosphorylation of NFAT in the cytosol. HST up-regulated cell cycle arrest genes and inhibited the growth of Staphylococcus aureus. These effects were confirmed in an NFAT electrophoretic-mobility shift assay via successful inhibition of NFAT translocation and in the histological recovery in a 2,4-dinitrochloro benzene-induced in vivo model. Taken together, HST was shown to effectively inhibit T-cell activation via inhibition of cytosolic NFAT dephosphorylation, similar to INCA-6.

키워드

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피인용 문헌

  1. Diarylheptanoid Hirsutenone Attenuates Osteoclastogenesis by Suppressing IFNγ and NF-κB Signaling in Th1 and Preosteoclastic Cells vol.40, pp.5, 2017, https://doi.org/10.1248/bpb.b16-00876