Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Artesunate inhibits collagen-induced human platelets aggregation through regulation of PI3K/Akt and MAPK pathway

PI3K/Akt 및 MAPK 기전 조절을 통한 Artesunate의 콜라겐 유도의 사람 혈소판 응집 억제효과

  • Lee, Dong-Ha (Department of Biomedical Laboratory Science, Molecular Diagnostics Research Institute, Namseoul University)
  • Received : 2022.01.17
  • Accepted : 2022.03.02
  • Published : 2022.03.31
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Abstract

Excessive activation and aggregation of platelets is a major cause of cardiovascular disease. Therefore, inhibition of platelet activation and aggregation is considered an attractive therapeutic target in preventing and treating cardiovascular diseases. In particular, strong platelet activation and aggregation by collagen secreted from the vascular endothelium are characteristic of vascular diseases. Artesunate is a compound extracted from the plant roots of Artemisia or Scopolia species, and has been reported to be effective in anticancer and Alzheimer's disease fields. However, the effect and mechanism of artesunate on collagen-induced platelet activation and aggregation have not been elucidated. In this study, the effect of artesunate on collagen-induced human platelet aggregation was confirmed and the mechanism of action of artesunate was clarified. Artesunate inhibited the phosphorylation of PI3K/Akt and Mitogen-activated protein kinases, which are phosphoproteins that are known to act in the signal transduction process when platelets are activated. In addition, artesunate decreased TXA2 production and decreased granule secretion in platelets such as ATP and serotonin release. As a result, artesunate strongly inhibited platelet aggregation induced by collagen, a strong aggregation inducer secreted from vascular endothelial cells, with an IC50 of 106.41 µM. These results suggest that artesunate has value as an effective antithrombotic agent for inhibiting the activation and aggregation of human platelets through vascular injury.

혈소판의 과도한 활성화 및 응집은 심혈관계 질환의 주요원인이 된다. 따라서, 혈소판 활성화 및 응집을 억제하는 것은 심혈관계 질환을 예방하고 치료하는데 있어서 매력적인 치료 표적으로 여겨진다. 특히, 혈관 내피세포에서 분비되는 collagen에 의한 강력한 혈소판 활성화와 응집이 혈관질환에서 특징적이다. Artesunate는 Artemisia 또는 Scopolia 속 식물의 뿌리에서 추출한 화합물이며, 항암 및 알츠하이머 병 분야에서 효과가 있다고 보고된 바 있다. 그러나, artesunate가 collagen 유도의 혈소판 활성화와 응집에 미치는 영향과 그 기전에 대해서는 규명된 바가 없다. 본 연구에서는 collagen이 유도하는 사람 혈소판 응집에 있어 artesunate이 미치는 영향을 확인하였고, artesunate의 작용 기전을 명확히 하였다. Artesunate은 혈소판가 활성화 될 때 신호 전달 과정에 작용한다고 알려진 인단백질인 PI3K/Akt 및 MAPK의 인산화를 억제하였다. 또한, artesunate는 TXA2 생성을 감소시켰고, ATP 및 serotonin 방출 등의 혈소판 내 과립 분비를 감소시켰다. 그 결과, artesunate는 혈관 내피세포에서 분비되는 강력한 응집 유도 물질인 collagen으로 유도된 혈소판 응집을 106.41 μM의 IC50로 강력하게 억제하였다. 이 결과들을 통해, artesunate가 혈관 손상을 통해 일어나는 사람 혈소판의 활성화 및 응집을 억제하는 데 유효한 항혈전 물질로 가치가 있음을 제안한다.

Keywords

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