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多靶点代谢药物体内评价的模型hGLP1R/hGIPR/hGCGR人源化小鼠的介绍

2026-09-07     来源:南模生物     点击次数:50

除GLP-1R 与 GCGR 外,葡萄糖依赖性促胰岛素多肽受体(glucose-dependent insulinotropic polypeptide receptor,GIPR)同样是能量代谢调控中的重要靶点。同时激动 GLP-1R、GIPR 与 GCGR 的三靶点候选药物(如 retatrutide)在减重与代谢改善方面受到关注。针对人源靶点的候选药物需在同时表达多个人源靶点的人源化小鼠上开展体内药效评价,人源化小鼠模型已成为这类多靶点药物研发中常用的小鼠模型。

该品系由hGLP1R/hGIPR 人源化小鼠与 hGCGR 人源化小鼠杂交获得,在三个基因位点上同时表达人源 GLP-1R、GIPR 与 GCGR。


Fig.1 Body weight change of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide.

 

Food intake of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide.
Fig.2 Food intake of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide.

 

Fat mass and lean mass change of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide
Fig.3 Fat mass and lean mass change of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide. 
 
Blood glucose levels of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide
Fig.4 Blood glucose levels of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide. 
 
 Random blood glucose and insulin levels of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide.
Fig.5 Random blood glucose and insulin levels of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide. 
 
Serum lipid profiles of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide
Fig.6 Serum lipid profiles of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide.
 
Liver lipid profiles of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide.
Fig.7 Liver lipid profiles of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide. 
 
 Liver weight of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide
Fig.8 Liver weight of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide.
 
White adipose tissue weight in hGLP1R/hGIPR/hGCGR obese mice after treatment with retatrutide
Fig.9 White adipose tissue weight in hGLP1R/hGIPR/hGCGR obese mice after treatment with retatrutide.
 

Brown adipose tissue weight in hGLP1R/hGIPR/hGCGR obese mice after treatment with retatrutide

Fig.10 Brown adipose tissue weight in hGLP1R/hGIPR/hGCGR obese mice after treatment with retatrutide.
 
Muscle weights of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide
Fig.11 Muscle weights of HFD-induced hGLP1R/hGIPR/hGCGR obese mice treated with retatrutide. 

官网产品页以retatrutide 为工具药物,在高脂饮食诱导的肥胖模型上验证了该品系的体内药效响应。结果显示,retatrutide 处理可显著降低肥胖小鼠的体重(图1);摄食量在给药前 8 天出现下降,其后无显著变化(图2);脂肪与瘦体重均出现下降(图3)。代谢指标方面,retatrutide 可显著降低血糖并改善糖耐量(图4),随机血糖与血清胰岛素亦有相应记录(图5)。脂质指标方面,血清总胆固醇与高密度脂蛋白胆固醇(HDL-C)水平显著下降(图6),肝脏甘油三酯水平显著下降(图7),肝脏重量亦显著下降(图8)。脂肪组织方面,腹股沟、附睾与肠系膜白色脂肪组织重量均降低(图9),棕色脂肪组织亦进行了称量分析(图10);而胫骨前肌与腓肠肌的重量占体重比例则有所升高(图11)。

上述数据表明,该品系能够对同时作用于GLP-1R、GIPR 与 GCGR 的候选药物产生相应的体内药效响应,可用于此类多靶点候选药物的减重、血糖、脂质与代谢改善效果的体内评价。

该品系由南模生物研发,目录号NM-XA-240884。

hGLP1R/hGIPR/hGCGR 三靶点人源化小鼠​能评价哪些药效指标?
hGLP1R/hGIPR/hGCGR 三靶点人源化小鼠(目录号 NM-XA-240884)同时表达人源 GLP-1R、GIPR 与 GCGR。官网以 retatrutide 为工具药物验证了该模型的药效响应,可评价候选药物对体重、摄食量、血糖、糖耐量、血清胰岛素、血脂及脂肪组织的影响,适合多靶点减重降糖药物的体内药效评价。

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