一种新的三价复合蛋白用于2型糖尿病,具有口服输送潜力:设计,表达和实验验证
Maryam Ehsasatvatan1, Bahram Baghban Kohnehrouz1
1Department of Plant Breeding & Biotechnology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
Journal of biomolecular structure & dynamics
|March 12, 2024
概括
工程融合蛋白结合了经过修改的类似葡萄糖-1 (GLP-1) 与蛋白结合域,以延长作用. 这种新的方法表明,在2型糖尿病治疗中,口服治疗具有前途.
科学领域:
- 生物技术是生物技术.
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 葡萄糖类-1 (GLP-1) 受体激活剂对于2型糖尿病管理至关重要,但其半衰期短,需要注射.
- 延长半衰期并使GLP-1的替代输送方法成为改善治疗应用的关键.
研究的目的:
- 设计新型三价融合蛋白,结合一种改性GLP-1,一种抗人类血清白蛋白 (HSA) DARPin,以及一种细胞透 (CPP).
- 评估这些融合蛋白的稳定性,结合亲和力和生物活性,以作为长效GLP-1受体激动剂的潜在口服输送.
主要方法:
- 计算工程和分子动力学模拟被用来设计和评估融合蛋白的稳定性.
- 分子对接探索了与GLP-1受体和HSA的结合亲缘关系.
- 在大肠杆菌,SDS-PAGE和西部涂抹中,重组蛋白质表达证实了蛋白质的同一性和纯度.
- 在体外测试,包括胰腺β细胞系和免疫光显微镜的胰岛素分泌,评估了生物活性和细胞吸收.
主要成果:
- 工程融合蛋白mGLP1-DARPin-Pen通过理论研究和模拟证明了可接受的稳定性和质量.
- 分子对接表明了与HSA和GLP-1受体结合的高亲和力潜力.
- 纯化的融合蛋白通过SDS-PAGE和西部污染证实,显示高亲和力结合HSA.
- 实验室试验证实了融合蛋白刺激胰岛素分泌的能力,并经历了CPP依赖的细胞吸收.
结论:
- 工程三价融合蛋白mGLP1-DARPin-Pen成功地将修改的GLP-1活性与HSA结合和CPP介导的细胞吸收相结合.
- 这种融合蛋白显示出强大的生物活性和对HSA的高度亲和力,支持其作为长效治疗药物的潜力.
- mGLP1-DARPin-Pen 是一种有希望的口服药物候选剂,用于有效治疗2型糖尿病.
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