一个综合框架确定了针对IRE1α的强效抑制剂
Subramaniyan Divya1, Priti Talwar2, Palaniyandi Ravanan1
1Functional Genomics Laboratory, Department of Microbiology, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur 610005, Tamil Nadu, India.
Bioorganic & medicinal chemistry
|February 11, 2026
概括
黄胺素 (amentoflavone和glycitein) 抑制IRE1α激酶活性,调节未折叠蛋白响应 (UPR) 信号传递,为治疗ER压力和炎症性疾病提供潜力.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 需要内醇的酶1α (IRE1α) 是未折叠蛋白质反应 (UPR) 中的一个关键传感器,对内质网膜 (ER) 恒温至关重要.
- IRE1α信号失调与各种疾病有关,突显了治疗点的必要性.
研究的目的:
- 识别和描述调节IRE1α活性的黄类.
- 研究阿门托弗拉和甘油素作为IRE1α激酶活性的抑制剂和其RNase功能的激活剂的潜力.
主要方法:
- 计算对接 (AutoDock Vina,AutoDock Wizard,iGEMDOCK) 用于预测与IRE1α的黄类结合亲缘关系.
- 在体外激酶试验中测试以确定安门托弗拉和甘油的IC50值.
- 基于细胞的测试以评估抗炎作用和IRE1α-XBP1信号的调制.
主要成果:
- 阿门托弗拉和甘油显著抑制了IRE1α激酶活性 (IC50:分别为16.4微米和23.68微米).
- 这些黄类化合物在正常情况下促进XBP1剪接和IRE1α表达.
- 黄类药物预治疗减弱了LPS诱导的IRE1α-XBP1信号和减少了炎症.
结论:
- 阿门托弗拉和甘氨酸在IRE1α上表现出有前途的调节作用,作为激酶抑制剂和RNase激活剂.
- 这项研究是首次报告这些黄类的双重调节性质.
- 黄类药物代表了ER压力和相关炎症状况的潜在治疗策略.
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