Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, USA.
Vet Q. 2023 Dec;43(1):1-12. doi: 10.1080/01652176.2023.2260442. Epub 2023 Oct 4.
Type 2 diabetes (T2D) is a health concern for both humans and cats, with cases rising over the past decade. Around 70% of patients from either species exhibit pancreatic aggregates of islet amyloid polypeptide (IAPP), a protein that proves toxic upon misfolding. These misfolded protein aggregates congregate in the islets of Langerhans of the pancreas, diminishing the capability of β-cells to produce insulin and further perpetuating disease.
Our team's drug discovery program is investigating newly synthesized compounds that could diminish aggregates of both human and feline IAPP, potentially disrupting the progression of T2D.
We prepared 24 compounds derived from diaryl urea, as ureas have previously demonstrated great potential at reducing accumulations of misfolded proteins. Biophysical methods were employed to analyze the anti-aggregation activity of these compounds at inhibiting and/or disrupting IAPP fibril formation .
The results demonstrate that compounds and were most effective at reducing the fibrillization and aggregation of both human and feline IAPP. When compared with the control for each experiment, samples treated with either compound or exhibited fewer accumulations of amyloid-like fibrils.
Urea-based compounds, such as compounds and , may prove crucial in future pre-clinical studies in the search for therapeutics for T2D.
2 型糖尿病(T2D)是人类和猫都关注的健康问题,在过去十年中病例有所增加。这两种物种中约有 70%的患者表现出胰岛淀粉样多肽(IAPP)的胰腺聚集,这种蛋白质在错误折叠时具有毒性。这些错误折叠的蛋白聚集体聚集在胰岛中,降低β细胞产生胰岛素的能力,并进一步促使疾病恶化。
我们的团队的药物发现计划正在研究新合成的化合物,这些化合物可能减少人和猫的 IAPP 聚集,有可能破坏 T2D 的进展。
我们制备了 24 种源自二芳基脲的化合物,因为脲类化合物以前在减少错误折叠蛋白的积累方面显示出巨大的潜力。采用生物物理方法分析这些化合物在抑制和/或破坏 IAPP 纤维形成方面的抗聚集活性。
结果表明,化合物 和 最有效地减少了人和猫的 IAPP 的纤维形成和聚集。与每个实验的对照相比,用任一种化合物 或 处理的样品中淀粉样纤维样积累较少。
基于脲的化合物,如化合物 和 ,在未来针对 T2D 的治疗方法的临床前研究中可能具有重要意义。