AAV 衣壳由三种衣壳蛋白VP1、VP2 和 VP3 以 1:1:10 的比例总共 60 个拷贝组成。 VP1、VP2、VP3的表观分子量分别为87kDa、73kDa、62kDa。衣壳蛋白对细胞转导效率至关重要。 VP2和VP3不足被认为是无效包装的主要原因。过量的 VP3 可能会降低转导效率。三种衣壳蛋白比例的优化在 AAV 生产过程中至关重要。聚丙烯酰胺凝胶电泳 (PAGE) 和蛋白质印迹 (WB) 是在重组 AAV 生产过程的初始优化和质量控制过程中检测 VP1、VP2 和 VP3 蛋白组成的有效方法。 GenScript 提供Anti-AAV 抗体用于表征衣壳蛋白 VP1、VP2 和 VP3(图 1 和 2)。
Figure 1. VP1, VP2, VP3 protein Analysis of AAV Capsids by Western blot
Western blot analysis of VP1, VP2, VP3 proteins of AAV type 1, 2, 5, 6, 8, 9, DJ and
rh.1
was conducted using MonoRab™ AAVX VP1/VP2/VP3 Antibody (5G4), mAb, Rabbit
(GenScript,
A02206, 0.1 µg/mL). The signal was developed with Peroxidase Conjugated Goat
Anti-Rabbit
IgG.
Predicted Size for VP1, VP2 and VP3: 87, 72 and 62 kDa
Observed Size for VP1, VP2 and VP3: 87, 72 and 62 kDa
Figure 2. VP1 protein Analysis of AAV Capsids by Western blot
Western blot analysis of VP1 protein of AAV type 1, 2, 5, 6, 8, 9, DJ and rh.1 was
conducted using MonoRab™ AAVX VP1 Antibody (24F5), mAb, Rabbit (GenScript, A02207,
0.1 µg/mL). The signal was developed with Peroxidase Conjugated Goat Anti-Rabbit
IgG.
Predicted Size: 87 kDa
Observed Size: 87 kDa