Journal of Applied Biological Chemistry

  • Volume 66
  • /
  • Pages.122-127
  • /
  • 2023
  • /
  • 1976-0442(pISSN)
  • /
  • 2234-7941(eISSN)
The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Inhibitory effects of hydroxygenkwanin on platelets aggregation via regulation of phosphoproteins in collagen-induced human platelets

Collagen 유도의 사람 혈소판에서 인산화 단백질 조절을 통한 hydroxygenkwanin의 혈소판 응집억제 효과

  • Chang-Eun Park (Department of Biomedical Laboratory Science, Molecular Diagnostics Research Institute, Namseoul University) ;
  • Dong-Ha Lee (Department of Biomedical Laboratory Science, Molecular Diagnostics Research Institute, Namseoul University)
  • Received : 2023.02.22
  • Accepted : 2023.03.17
  • Published : 2023.12.31
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Abstract

Cardiovascular disease (CVD) is increasingly increasing as the main cause of death worldwide, and activation of platelet in vascular damage is one of the important causes of CVD. In recent, there is a growing interest in anti-thrombotic materials through platelet suppression, and efforts are being made to reduce side effects by using natural bioactive compounds. Known as one of the Flavonoids, hydroxygenkwanin (HGK) is a purified substance in Daphne Genkwa, which is known to have antibacterial, anti-inflammatory and anti-cancer effects, and has been reported to serve as an inhibitor of tissue factor that prevents thrombosis, but its anti-platelet effects and the action mechanisms is not known. In this study, we confirmed that the effects of HGK on the collagen-induced human platelets activation. HGK suppressed phosphorylation of PI3K/AKT and mitogen-activated protein kinases during platelet signaling, and reduced granule secretion in platelets such as ATP and serotonin. In addition, HGK inhibited the phosphorylation of cPLA2 and strongly undermined the production of TXA2, which is a powerful aggregation amplifier. As a result, the platelet aggregation derived by Collagen, a cohesive induced substance, was strongly suppressed by HGK to an IC50 of 86.36 µM. Therefore, HGK might be worth the antithrombotic substance that inhibits the activation and aggregation of human platelets that occur through blood vessel damage.

심혈관 질환(CVD)은 전 세계적으로 주요 사망 원인으로써 갈수록 증가하는 추세이며, 혈관 손상이 발생하였을 때, 혈전이 과도하게 형성되는 것이 그 원인인 중 하나이다. 근래에 혈소판 억제를 통한 항혈전 물질에 대한 관심이 커지고 있으며 천연 생물활성 화합물을 사용함으로써 부작용을 줄이려는 노력이 이루어지고 있다. Flavonoid 중 하나로 알려진 hydroxygenkwanin(HGK)은 팥꽃나무(Daphne genkwa)에서 정제되는 물질로서 항균, 항염증 및 항암 효과가 있다고 알려져 있으며, 혈전증을 예방하는 조직 인자의 억제제 역할을 한다고 보고되었지만 항혈소판 효과와 그 작용기전에 대해서는 거의 알려지지 않았다. 본 연구를 통해 HGK가 collagen 유도의 사람 혈소판 응집에 미치는지 확인하였고, 그 작용 기전을 확인하였다. HGK은 혈소판 신호 전달 과정에서 PI3K/AKT 및 MAPK의 인산화를 억제하였고, ATP 및 serotonin 등의 혈소판 내 과립 분비를 감소하였다. . 또한, HGK는 cPLA2의 인산화를 억제하며 응집 촉진물질인 TXA2 생성을 강하게 저해하였다. 결과적으로 응집 유도 물질인 collagen가 유도한 혈소판 응집을 86.36 µM의 IC50로 강하게 억제하였다. 그러므로, 본 연구를 통해 HGK가 혈관 손상을 통해 일어나는 사람 혈소판의 활성화 및 응집을 억제하는 항혈전 물질로 가치가 있음을 분명히 하였다.

Keywords

Acknowledgement

Funding for this paper was provided by Namseoul University.

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