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抗CD52單克隆抗體ADCC轉(zhuǎn)基因測活方法的建立

發(fā)布時間:2024-04-18 21:11
  目的建立轉(zhuǎn)基因細(xì)胞法測定抗CD52單克隆抗體(單抗)的抗體依賴細(xì)胞介導(dǎo)的細(xì)胞毒性作用(antibody-dependent cell-mediated cytotoxicity, ADCC)生物學(xué)活性檢測方法。方法①以Ramos細(xì)胞系作為靶細(xì)胞,以Jurkat-hFcγRⅢa/FcεRIγ-NFAT轉(zhuǎn)基因細(xì)胞系作為效應(yīng)細(xì)胞,通過熒光素酶檢測系統(tǒng)(Bright-GloTM luciferase Assay System)建立抗CD52單抗的ADCC生物學(xué)活性檢測方法;②對靶細(xì)胞、量效范圍、效靶比及誘導(dǎo)時間進(jìn)行優(yōu)化并進(jìn)行方法學(xué)驗(yàn)證;③研究建立的方法應(yīng)用于對不同抗CD52單抗的ADCC生物學(xué)活性檢測。結(jié)果建立抗CD52單抗的ADCC生物學(xué)活性檢測方法,抗CD52單抗在該方法中存在量效關(guān)系,符合四參數(shù)方程:y=(A-D)/[1+(x/C)B]+D;經(jīng)優(yōu)化后確定抗體量效范圍為起始質(zhì)量濃度360μg/mL,4倍系列稀釋9個稀釋度;效靶比為3∶1,誘導(dǎo)時間為6.0 h;該方法具有良好的專屬性;4個不同稀釋組回收率樣品經(jīng)3次測定,相對效價分別為(45.58±...

【文章頁數(shù)】:7 頁

【部分圖文】:

圖1抗CD52單抗的ADCC劑量效應(yīng)曲線Fig.1Dose-responsecurveofADCCpotencyofanti-CD52mAb

圖1抗CD52單抗的ADCC劑量效應(yīng)曲線Fig.1Dose-responsecurveofADCCpotencyofanti-CD52mAb

圖1抗CD52單抗的ADCC劑量效應(yīng)曲線Fig.1Dose-responsecurveofADCCpotencyofanti-CD52mAb圖2ADCC中不同靶細(xì)胞對比Fig.2ComparisonofdifferenttargetcellsinADCCassay2.2.2抗體量....


圖2ADCC中不同靶細(xì)胞對比Fig.2ComparisonofdifferenttargetcellsinADCCassay

圖2ADCC中不同靶細(xì)胞對比Fig.2ComparisonofdifferenttargetcellsinADCCassay

圖1抗CD52單抗的ADCC劑量效應(yīng)曲線Fig.1Dose-responsecurveofADCCpotencyofanti-CD52mAb圖2ADCC中不同靶細(xì)胞對比Fig.2ComparisonofdifferenttargetcellsinADCCassay2.2.2抗體量....


圖3ADCC中單抗量效范圍的優(yōu)化Fig.3Optimizationofdose-responsecurveofanti-CD52

圖3ADCC中單抗量效范圍的優(yōu)化Fig.3Optimizationofdose-responsecurveofanti-CD52

圖1抗CD52單抗的ADCC劑量效應(yīng)曲線Fig.1Dose-responsecurveofADCCpotencyofanti-CD52mAb圖2ADCC中不同靶細(xì)胞對比Fig.2ComparisonofdifferenttargetcellsinADCCassay2.2.2抗體量....


圖4ADCC中不同效靶比對比Fig.4Comparisonofdifferentratioofeffectortotarget

圖4ADCC中不同效靶比對比Fig.4Comparisonofdifferentratioofeffectortotarget

圖1抗CD52單抗的ADCC劑量效應(yīng)曲線Fig.1Dose-responsecurveofADCCpotencyofanti-CD52mAb圖2ADCC中不同靶細(xì)胞對比Fig.2ComparisonofdifferenttargetcellsinADCCassay2.2.2抗體量....



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