一项对增强格林类同类的亲和力,活性和稳定性的接合方法的调查
Juan J Esteban1, Julia R Mason1, Jakob Kaminski1
1Department of Chemistry, University of Western Ontario 1151 Richmond Street London Ontario N6A 3K7 Canada lluyt@uwo.ca.
RSC medicinal chemistry
|January 29, 2024
概括
用化学主质稳定格林 (生长激素分泌剂受体连接体) 提高了其结构和治疗应用的亲和力. Stapled 格林类似物显示出改善的蛋白解稳定性和受体结合.
科学领域:
- 生物化学 生物化学
- 药用化学 医学化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 增长激素分泌因子受体 (GHSR) 是一种与G蛋白合的受体,参与能量平衡,食欲和生长激素分泌.
- GHSR是代谢障碍和癌症缓解症的治疗标,也是癌症和心血管疾病的成像标.
- 格林,内源GHSR连接体,由于有限的二次结构,蛋白质分解不稳定.
研究的目的:
- 为了增强蛋白质溶解稳定性,亲和力和GHSR的ghrelin类型的活性.
- 研究不同化学拼接方法对 ghrelin 结构和功能的影响.
- 开发稳定格林类似物作为潜在的治疗剂或成像剂.
主要方法:
- 在位置12和16与各种化学基质 (乳酸,三醇,碳化合物,格拉泽,乙烯-thioether) 合成格林{1-20) 类似物.
- 使用竞争性结合试验测量受体亲和力.
- 通过循环二极化光谱学评估α-螺旋性.
- 通过β-逮捕素招募BRET试验评估激素活性,通过血清稳定性分析评估代谢稳定性.
主要成果:
- 结合螺旋诱导主质通常会增加α-helicity,并改善对GHSR的亲和力.
- 乳,三醇和碳化合物稳固的格林{1-20) 类似物与未稳固的格林相比,显示出明显更强的GHSR亲和力.
- 灵活的主连接器与增强的螺旋结构和受体亲和力相关.
结论:
- 化学合是一种有效的策略,可以稳定 ghrelin,并增强其与 GHSR 的结合亲和力.
- 稳定格林类比物对代谢性疾病和癌症缓解症的治疗发展具有前途.
- 需要进一步研究聚合类类似物对抗剂活性和代谢稳定性.
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