WuXi Biologics
Offering End-to-End Solutions
配景
用九游会生物自己建设的全人自然抗体库中获得特异性识别抗原1的两个剪接异变体1a和1b的抗体。
挑战
解决计划/效果
用抗原1b作为筛选目的,同时加入抗原1a作为竞争剂,从人自然抗体噬菌体库中筛选抗体,用单克隆抗体噬菌体ELISA检测第二轮和第三轮的产品, 寻找特异性团结的抗体噬菌体。筛选中我们发明,第三轮的产品中抗原1b特异性的抗体获得富集,而抗原1a和1b的交织团结抗体响应镌汰。序列剖析第三轮的阳性克隆,获得6个差别序列的抗体株,其中2个和细胞外貌表达的抗原1b有很是强的团结 (数据未显示)。
Aim
Production of a high quality GPCR protein in insect cells
Reconstitution of GPCR into nanodiscs
Key Challenges
Expression level of GPCR was very low <0.2 mg/L
The protein was unstable and its conformation was very flexible
It was hard to reconstitute GPCR into nanodiscs
Results