Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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The role of p62 in ceramide induced neuronal cell death

Ceramide에 의한 신경세포 사멸과정에서 p62의 역할

  • Joung, In-Sil (Department of Biological Sciences, Hanseo University)
  • 정인실 (한서대학교 생명과학과)
  • Published : 2009.03.31
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Abstract

p62 is a key component of protein aggregates found in brains of neurodegenerative diseases in which oxidative stress is involved in the pathogenesis. p62 was induced in SH-SY5Y, a neuroblastoma cell line, by hydroxydoparnine or $C_2-ceramide$ known to be related to neurodegenerative diseases. The over-expression of p62 showed the neuroprotective effect against the ceramide induced cell death. In addition, p62 became insoluble and cleaved forms as time proceeded after the ceramide treatment, suggesting the mechanism by which p62 is associated with aggregates in neurodegenerative diseases.

p62는 산화스트레스가 주요 원인 중 하나인 퇴행성 뇌질환과 연관된 엉긴 물질(aggregate)의 주요 구성성분이다. 퇴행성 뇌질환과 관련된 것으로 알려진 hydroxydopamin이나 $C_2-ceramide$를 신경모세포종 세포주인 SH-SY5Y에 처리하였을 때 p62의 발현이 유도되며 시간이 지날수록 그 양이 증가되었다. 또한 p62를 과발현시키면 ceramide에 의한 SH-SY5Y 세포의 사멸이 지연되었다. 이 과정에서 P62는 시간이 경과됨에 따라 침전화되며 절단되었다. 이 결과로 p62의 신경보호효과와 여러 종류의 퇴행성 뇌질환에서 p62가 엉긴 물질에서 발견되는 이유를 추측할 수 있다.

Keywords

References

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