関連する実験動画
Updated: Jun 23, 2026

12:43
On-Chip Endothelial Inflammatory Phenotyping
Published on: July 22, 2012
セレコキシブは,c-Jun端末NH2キナーゼのリン酸化を阻害することにより,内皮組織因子発現を低下させます
Jan Steffel1, Matthias Hermann, Helen Greutert
1Cardiovascular Research, Physiology Institute, University of Zurich, Switzerland.
Circulation
|March 30, 2005
まとめ
セレコキシブは,他のコキシブとは異なり,ヒト大動脈細胞における組織因子 (TF) 発現を,JNK.を阻害することによって減少させます. これは,心血管疾患の患者にとって重要な明確な薬物効果を示唆しています.
科学分野:
- 心血管薬理学について
- 分子生物学は分子生物学である.
- トロンボシス研究研究
背景:
- 選択性サイクロオキシゲナーゼ-2阻害剤 (コキシブ) は,心血管疾患患者の血栓形成リスクを増加させる可能性があります.
- 組織因子 (TF) は,動脈硬化症と血栓症の病原性に関与しています.
- TF発現に対するコキシブスの影響を調査することは,患者の安全にとって極めて重要です.
研究 の 目的:
- 組織因子 (TF) 発現に対する様々なコキシブの異なる効果を調べる.
- TF発現におけるコキシブ媒介による変化の背後にある分子メカニズムを解明する.
- 動脈硬化性血管疾患の患者に対するこれらの発見の臨床的関連性を評価する.
主な方法:
- 人間の大動脈内皮細胞は,さまざまなコキシブ (セレコキシブ,ロフェコキシブ,NS-398) で治療されました.
- 腫瘍死滅因子アルファ (TNF-α) は,TFの発現と活性を誘発するために使用されました.
- JNK,p38 MAPK,p44/42 MAPKを含むシグナル伝達経路を分析するために,ウエスタン・ブロッティングおよび特定の阻害剤 (SP600125) が使用されました.
主要な成果:
- セレコキシブは,TNF-α誘発のTF発現と活性を著しく低下させた.
- ロフェコキシブとNS-398は,TF発現や活性に影響を与えなかった.
- セレコキシブはJNKのリン酸化を抑制し,SP600125によって確認されたメカニズムであり,他のコキシブはそうしなかった.
- TFに対するセレコキシブの効果は,COX-2抑制とは独立していた.
結論:
- セレコキシブは,内皮細胞におけるTF発現と活性を低下させるユニークな能力を示しています.
- この効果は,COX-2抑制ではなく,JNKリン酸化抑制によって媒介される.
- コキシブがTFに与える影響に関して,心血管疾患および動脈硬化疾患に対する潜在的な臨床的影響があるため,コキシブの間には大きな異質性があります.
関連する概念動画
NF-κB-dependent Signaling Pathway
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
Inhibition of Cdk Activity
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
Regulation of Angiogenesis and Blood Supply
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
The JAK-STAT Signaling Pathway
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
TGF - β Signaling Pathway
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors are of three kinds RI, RII, and RIII. The RI...
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors
Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...

