三酸化二砒素とその代謝生成物ジメチル砒酸の併用による急性前骨髄球性白血病NB4細胞アポトーシスの機序

  • role: First author第一作者
  • Affiliation:

    Beijing University of Chinese Medicine,Beijing 102400,China

  • Email:15776562478@163.com
  • Introduction:广E-mail15776562478@163.com
LIU Guangzhi1,  
  • Affiliation:

    Beijing University of Chinese Medicine,Beijing 102400,China

BAI Xiuyun1,  
  • Affiliation:

    Beijing University of Chinese Medicine,Beijing 102400,China

YANG Jue1,  
  • Affiliation:

    Beijing University of Chinese Medicine,Beijing 102400,China

DENG Rongjun1,  
  • role: Corresponding author通信作者
  • Affiliation:

    Beijing University of Chinese Medicine,Beijing 102400,China

    Key Laboratory of Traditional Chinese Medicine Health Sciences,Ministry of Education,Beijing 102400,China

    Beijing Key Laboratory of Traditional Chinese Medicine Health Sciences,Beijing 102400,China

  • Email:yangxq0721@126.com
  • Introduction:E-mailyangxq0721@126.com
YANG Xueqin123*,  
  • role: Corresponding author通信作者
  • Affiliation:

    Beijing University of Chinese Medicine,Beijing 102400,China

  • Email:yyliu_1980@163.com
  • Introduction:E-mailyyliu_1980@163.com
LIU Yuanyan1*

サマリー

研究は、三酸化二砒素(ATO)とその代謝生成物ジメチル砒酸(DMAV)の併用により、代謝反応のバランスの影響を通じて、人の急性前骨髄球性白血病細胞NB4の細胞アポトーシスを促進する作用とその機序を探ることにあります。方法は、それぞれの大鼠に無菌生理食塩水、ATO(1.6 mg·kg-1)、DMAV(4、8、16、32 mg·kg-1)を単独で、およびATO(1.6 mg·kg-1)と併用して投与し、それぞれの薬剤血清を得た。細胞増殖と活性検定-8(CCK-8)を用いて、各薬剤血清がNB4細胞の増殖に及ぼす影響を検定した。蛍光プローブDCFH-DAを用い、流式細胞法で細胞内活性酸素(ROS)の蓄積を、蛍光プローブJC-1を用い、ミトコンドリア膜電位(Δψm)の変化を、蛋白免疫印迹法(Western blot)を用いて、アポトーシス関連蛋白Bcl-2関連X蛋白(Bax)/ Bcl-2、細胞色素C、切断されたカスペース(cleaved Caspase)-9およびcleaved Caspase-3の発現変化、およびc-Jun末側キナーゼ(JNK)のリン酸化水準を検定した。結果①両薬剤の併用はATO単独使用よりも高い増殖抑制率およびより多くの細胞アポトーシスを持っている。②両薬剤併用群はいずれの単一使用群に比べて、有意にROSの生成を増やした。③両薬剤併用群はいずれの単一使用群に比べて、有意にΔψmを減少させた。④両薬剤併用はいずれの単一使用群に比べて、有意に細胞色素Cを放出し、有意にBcl-2の発現を下げ、Bax、Cleaved Caspase-3およびCleaved Caspase-9の発現を上昇させた。⑤両薬剤併用はいずれの単一使用群に比べて、JNKのリン酸化水準を有意に上昇させた。結論DMAVとATOの併用は、おそらくROS介在した酸化ストレス協同誘導のミトコンドリアアポトーシスを介し、Δψmの消失と細胞色素Cの放出を、Caspase-9/Caspase-3とJNKのリン酸化水準の活性化により、Bcl-2ファミリープロテイン(Bax/Bcl-2)の調節、NB4細胞のアポトーシスを促進する可能性がある。

キーワード

ジメチル砒酸;三酸化二砒素;酸化ストレス;ミトコンドリアアポトーシス

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