AAV 衣壳由三种衣壳卵白VP1、VP2 和 VP3 以 1:1:10 的比例总共 60 个拷贝组成。 VP1、VP2、VP3的表观分子量划分为87kDa、73kDa、62kDa。衣壳卵白对细胞转导效率至关主要。 VP2和VP3缺乏被以为是无效包装的主要缘故原由。过量的 VP3 可能会降低转导效率。三种衣壳卵白比例的优化在 AAV 生产历程中至关主要。聚丙烯酰胺凝胶电泳 (PAGE) 和卵白质印迹 (WB) 是在重组 AAV 生产历程的初始优化和质量控制历程中检测 VP1、VP2 和 VP3 卵白组成的有用要领。 GenScript 提供Anti-AAV 抗体用于表征衣壳卵白 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 ?g/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 ?g/mL). The signal was developed with Peroxidase Conjugated Goat Anti-Rabbit
IgG.
Predicted Size: 87 kDa
Observed Size: 87 kDa