作为HMGB1抑制剂的G-四方体形成性胺体的共价连接二元体
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Updated: Jun 30, 2026

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Primer-Free Aptamer Selection Using A Random DNA Library
Published on: July 26, 2010
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Andrea Criscuolo1, Ettore Napolitano1, Claudia Riccardi1
1Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, 80126, Napoli, Italy.
International journal of biological macromolecules
|October 24, 2025
概括
研究人员开发了L12合体的新型共价二分体,以抑制高流动性组盒1 (HMGB1). 最好的二元体,L12d1T3,有效地阻止HMGB1诱导的细胞迁移,显示出治疗炎症性疾病和癌症的希望.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 药用化学 医学化学
背景情况:
- 高流动性组第1框 (HMGB1) 与炎症性疾病和癌症有关.
- 这种L12体形成二维的G-四重复 (G4) 结构,并抑制HMGB1.1.
- 设计L12的共价二极体是为了增强生物活性.
研究的目的:
- 为了合成和表征L12合体的共价二次相似物.
- 评估它们的G4结构形成,稳定性和HMGB1结合亲和力.
- 评估它们在抑制HMGB1诱导的细胞迁移方面的有效性.
主要方法:
- 合成具有不同链接器和极性的共价L12二极体.
- 用于结构和稳定性分析的生物物理技术 (例如光谱,稳定性测试).
- 在体外测试测量HMGB1结合 (KD) 和细胞迁移抑制 (IC50).
主要成果:
- 几个L12二极体形成了平行或混合的G4结构,稳定性各不相同.
- L12d1T3二元体对HMGB1具有很高的亲和力 (KD ≈40nM) 和显著的血清耐药性 (t1/2 ≈13h).
- 在A549细胞中,L12d1T3强烈抑制了HMGB1诱导的迁移 (IC50 = 28nM).
结论:
- 对L12胺体的共价二分化可以产生强大的HMGB1抑制剂.
- L12d1T3是治疗HMGB1相关疾病的有希望的候选人.
- 这项研究强调了G4胺二聚体在药物发现中的潜力.
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