글로버메뉴 바로가기 본문 바로가기 하단메뉴 바로가기

논문검색은 역시 페이퍼서치

> 한국미생물생명공학회(구 한국산업미생물학회) > Journal of Microbiology and Biotechnology > 26권 2호

Bioactive Compounds / Food Microbiology : Kaempferol Activates G2-Checkpoint of the Cell Cycle Resulting in G2-Arrest and Mitochondria-Dependent Apoptosis in Human Acute Leukemia Jurkat T Cells

Bioactive Compounds / Food Microbiology : Kaempferol Activates G2-Checkpoint of the Cell Cycle Resulting in G2-Arrest and Mitochondria-Dependent Apoptosis in Human Acute Leukemia Jurkat T Cells

( Ki Yun Kim ) , ( Won Young Jang ) , ( Ji Young Lee ) , ( Do Youn Jun ) , ( Jee Youn Ko ) , ( Young Ho Yun ) , ( Young Ho Kim )

- 발행기관 : 한국미생물생명공학회(구 한국산업미생물학회)

- 발행년도 : 2016

- 간행물 : Journal of Microbiology and Biotechnology, 26권 2호

- 페이지 : pp.287-294 ( 총 8 페이지 )


학술발표대회집, 워크숍 자료집 중 1,2 페이지 논문은 ‘요약’만 제공되는 경우가 있으니,

구매 전에 간행물명, 페이지 수 확인 부탁 드립니다.

4,500
논문제목
초록(외국어)
The effect of kaempferol (3,5,7,4-tetrahydroxyflavone), a flavonoid compound that was identified in barnyard millet (Echinochloa crus-galli var. frumentacea) grains, on G2-checkpoint and apoptotic pathways was investigated in human acute leukemia Jurkat T cell clones stably transfected with an empty vector (J/Neo) or a Bcl-xL expression vector (J/Bcl-xL). Exposure of J/Neo cells to kaempeferol caused cytotoxicity and activation of the ATM/ATR-Chk1/Chk2 pathway, activating the phosphorylation of p53 (Ser-15), inhibitory phosphorylation of Cdc25C (Ser-216), and inactivation of cyclin-dependent kinase 1 (Cdk1), with resultant G2- arrest of the cell cycle. Under these conditions, apoptotic events, including upregulation of Bak and PUMA levels, Bak activation, mitochondrial membrane potential (Δψm) loss, activation of caspase-9, -8, and -3, anti-poly (ADP-ribose) polymerase (PARP) cleavage, and accumulation of apoptotic sub-G1 cells, were induced without accompanying necrosis. However, these apoptotic events, except for upregulation of Bak and PUMA levels, were completely abrogated in J/Bcl-xL cells overexpressing Bcl-xL, suggesting that the G2-arrest and the Bcl-xL-sensitive mitochondrial apoptotic events were induced, in parallel, as downstream events of the DNA-damage-mediated G2-checkpoint activation. Together these results demonstrate that kaempferol-mediated antitumor activity toward Jurkat T cells was attributable to G2-checkpoint activation, which caused not only G2-arrest of the cell cycle but also activating phosphorylation of p53 (Ser-15) and subsequent induction of mitochondriadependent apoptotic events, including Bak and PUMA upregulation, Bak activation, Δψm loss, and caspase cascade activation.

논문정보
  • - 주제 : 자연과학분야 > 생물
  • - 발행기관 : 한국미생물생명공학회(구 한국산업미생물학회)
  • - 간행물 : Journal of Microbiology and Biotechnology, 26권 2호
  • - 발행년도 : 2016
  • - 페이지 : pp.287-294 ( 총 8 페이지 )
  • - UCI(KEPA) : I410-ECN-0102-2016-470-000786453
저널정보
  • - 주제 : 자연과학분야 > 생물
  • - 성격 : 학술지
  • - 간기 : 월간
  • - 국내 등재 : KCI 등재
  • - 해외 등재 : SCI / SCOPUS
  • - ISSN : 1017-7825
  • - 수록범위 : 1991–2021
  • - 수록 논문수 : 5714