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Effects of BMI-1026, A Potent CDK Inhibitor, on Murine Oocyte Maturation and Metaphase II Arrest

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  • 발행기관
    한국동물생명공학회(구 한국동물번식학회) 바로가기
  • 간행물
    Reproductive & developmental biology 바로가기
  • 통권
    Volume 31 No 2 (2007.06)바로가기
  • 페이지
    pp.71-76
  • 저자
    Tae-Saeng Choi
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A46729

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초록

영어
Previous studies have shown that BMI-1026 is a potent inhibitor of the cyclin-dependent kinases (cdk). In cell culture, the compound also arrests G2/M strongly and G1/S and S weakly. Two key kinases, cdk1 (p34cdc2 kinase) and mitogen-activated protein (MAP) kinase (erk1 and 2), perform crucial roles during oocyte maturation and, later, metaphase II (MII) arrest. In mammalian oocytes, both kinases are activated gradually around the time of germinal vesicle breakdown (GVBD) and maintain high activity in eggs arrested at metaphase II. In this study, we examined the effects of BMI-1026 on GVBD and MII arrest in mouse oocytes. BMI-1026 inhibited GVBD of immature oocytes and activated MII-arrested oocytes in a concentration-dependent manner, with more than 90% of oocytes exhibiting GVBD inhibition and MII activation at 100 nM. This is approximately 500~1,000 times more potent than the activity reported for the cdk inhibitors roscovitine (~50 M) and butyrolactone (~100 M). Based on the results of previous in vitro kinase assays, we expected BMI-1026 to inhibit only cdk1 activation in oocytes and eggs, not MAP kinase. However, in our cell-based system, it inhibited the activity of both kinases. We also found that the effect of BMI-1026 is reversible. Our results suggest that BMI-1026 inhibits GVBD and activates MII-arrested oocytes efficiently and reversibly and that it also inhibits both cdk1/histone H1 kinase and MAP kinase in mouse oocytes.

목차

ABSTRACT
 INTRIDUSTION
 MATERIALS AND METHODS
  Collection of Oocytes and Eggs
  Culture of Oocytes and Eggs
  Histone H1 and MBP Double-Kinase Assay
  Evaluation of GVBD, Egg Activation and 2nd Polar Body Extrusion
  Statistical Analysis
 RESULTS
  Effect of BMI-1026 on GVBD of Immature Oocytes
  Effect of BMI-1026 on Histone H1 and MAP Kinases Activation
  Effect of BMI-1026 on Activation of Ovulated Eggs
  Reversibility of BMI-1026 on GVBD Inhibition
 DISCUSSION
 REFERENCES

저자

  • Tae-Saeng Choi [ Department of Microbiology, College of Medicine, Dankook Uinversity ]

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    한국동물생명공학회(구 한국동물번식학회) [The Korean Society of Animal Reproduction and Biotechnology]
  • 설립연도
    1976
  • 분야
    농수해양>축산학
  • 소개
    동물번식생리학, 동물생명공학, 수의학, 인공수정 및 수정란이식을 이용한 동물개량에 관한 이론과 기술의 발전을 통해 학계, 연구계, 산업계 및 양축가 상호간의 협력을 도모함으로써 동물과학발전 및 사회일반의 이익에 기여 한다는 목적을 위해 노력해 나가겠습니다.

간행물

  • 간행물명
    Reproductive & developmental biology
  • 간기
    계간
  • pISSN
    1738-2432
  • eISSN
    2288-0151
  • 수록기간
    1977~2018
  • 십진분류
    KDC 527 DDC 636

이 권호 내 다른 논문 / Reproductive & developmental biology Volume 31 No 2

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