树突分子篮用于选择性结合有毒甲基酸盐
Nitesh Kumar1, Tyler J Finnegan1, Sagarika Taneja1
1Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH-43210, USA.
Angewandte Chemie (International ed. in English)
|November 12, 2024
概括
一个新的树突篮子分子选择性地在水中结合抗癌药物甲状腺素,由于其生物相容性和可调性特性,显示为甲状腺素中毒的解毒剂的潜力.
科学领域:
- 超分子化学 超分子化学
- 药用化学 医学化学
- 材料科学 材料科学 材料科学
背景情况:
- 洞膜是宏环宿主,在药物输送和封存方面具有潜在的应用.
- 甲基 (MTX) 是一种具有狭窄治疗指数的关键抗癌药物,需要有效的毒性管理策略.
- 开发用于选择性药物结合的合成受体是药物化学的一个关键挑战.
研究的目的:
- 合成和表征一种具有增强水溶性和防止自我组装的新型树突篮腔体 (6^12-).
- 为了研究树突篮和甲状腺酸盐 (MTX) 之间的结合特性和复杂形成.
- 评估树突篮的潜力,作为一种非生物的解毒剂,用于甲醇毒素中毒.
主要方法:
- 树突篮腔的合成和表征.
- 使用异热定位热量测量 (ITC) 和1HNMR光谱的约束性研究.
- 计算建模 (DFT和MM) 来确定绑定位置.
- 在体外生物相容性试验 (HEK293细胞系) 和竞争性结合试验.
主要成果:
- 树突篮子6^12-已成功制备,并显示出高水溶性.
- 在水中形成6^12-和MTX之间的纳入复合体,其解离常数 (Kd) 为9.2μM.
- 计算和实验数据证实了MTX通过π-π堆叠和结合在篮子内结合.
- 篮子选择性地将MTX结合在结构相似的化合物上,如叶酸和leucovorin.
- 主体分子表现出良好的生物相容性 (IC50>150μM).
结论:
- 树突篮子6^12-是一个有前途的宿主分子,用于选择性甲状腺素结.
- 它的生物相容性和可调节性使其成为抗甲中毒非生物解药的主要候选者.
- 需要进一步的药理动力学研究来优化其体内疗效,因为二叶酸还原酶亲和力可能占据主导地位.
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