AAV 衣殼由三種衣殼蛋白VP1、VP2 和 VP3 以 1:1:10 的比例總共 60 個拷貝組成。 VP1、VP2、VP3的表觀分子量分別為87kDa、73kDa、62kDa。衣殼蛋白對細胞轉導效率至關重要。 VP2和VP3不足被認為是無效包裝的主要原因。過量的 VP3 可能會降低轉導效率。三種衣殼蛋白比例的優化在 AAV 生產過程中至關重要。聚丙烯酰胺凝膠電泳 (PAGE) 和蛋白質印跡 (WB) 是在重組 AAV 生產過程的初始優化和質量控制過程中檢測 VP1、VP2 和 VP3 蛋白組成的有效方法。 GenScript 提供Anti-AAV 抗體用于表征衣殼蛋白 VP1、VP2 和 VP3(圖 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