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(gè)拷貝組成。 VP1、VP2、VP3的表觀分子量分別為87kDa、73kDa、62kDa。衣殼蛋白對(duì)細(xì)胞轉(zhuǎn)導(dǎo)效率至關(guān)重要。 VP2和VP3不足被認(rèn)為是無效包裝的主要原因。過量的 VP3 可能會(huì)降低轉(zhuǎn)導(dǎo)效率。三種衣殼蛋白比例的優(yōu)化在 AAV 生產(chǎn)過程中至關(guān)重要。聚丙烯酰胺凝膠電泳 (PAGE) 和蛋白質(zhì)印跡 (WB) 是在重組 AAV 生產(chǎn)過程的初始優(yōu)化和質(zhì)量控制過程中檢測(cè) 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