CN118027211A - 一种识别重组egf-crm197疫苗的单克隆抗体及其应用 - Google Patents
一种识别重组egf-crm197疫苗的单克隆抗体及其应用 Download PDFInfo
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- C07K16/12—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from bacteria
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Abstract
本发明提供了一种识别重组EGF‑CRM197疫苗的单克隆抗体及其应用,所述单克隆抗体的轻链VL‑CDR1的氨基酸序列为SEQ ID NO.1,轻链VL‑CDR2的氨基酸序列为SEQ ID NO.2,轻链VL‑CDR3的氨基酸序列为SEQ ID NO.3;所述单克隆抗体的重链CDR1的氨基酸序列为VH‑SEQ ID NO.4,重链CDR2的氨基酸序列为VH‑SEQ ID NO.5,重链CDR3的氨基酸序列为VH‑SEQ ID NO.6。本发明可用于重组EGF‑CRM197疫苗放行效价检测以及用于评估免疫重组EGF‑CRM197疫苗后的免疫效能。
Description
技术领域
本发明涉及生物技术领域,具体说涉及一种用于识别重组EGF-CRM197疫苗的单克隆抗体及其应用。
背景技术
人表皮生长因子(epidermal growth factor,EGF)是一种由53个氨基酸组成的单链低分子量多肽,主要分布于人体各种组织的细胞外液中。EGF主要通过EGFR发挥其功能,EGF与EGFR结合后,可激活包括Ras-Raf-MAPK、 JAK-STAT、PI(3)K-Akt等在内的多条信号通路。近年来研究显示:在许多实质性肿瘤如神经胶质细胞瘤、乳腺癌肺癌、卵巢癌、头颈部磷癌、宫颈癌、食管癌、前列腺癌、肝癌、结肠癌、胃癌等中EGF及EGFR均有过度表达。多种肿瘤通过自分泌和旁分泌的方式产生大量EGF,从而使EGFR通路过度活化。过度活化的EGFR通过多条传导信号通路,增强转录、转录后活动或基因表达,使细胞表型发生转化,进而导致肿瘤的发生、发展。因此,降低肿瘤细胞内EGF 的含量,对于抑制肿瘤细胞的增殖、肿瘤细胞间的信号传导,进而抑制肿瘤的发展具有举足轻重的作用。
重组EGF-CRM197肿瘤治疗性疫苗(以下简称“重组EGF-CRM197疫苗”)是一种EGF与载体蛋白CRM197交联而成的新型结合疫苗,由上海惠盾生物技术有限公司研发,该疫苗已通过CDE审评,获得了国家I类新药的临床试验批文(批件号:2017L04930),目前已完成Ⅰ期临床试验,正在开展Ⅱ期临床试验。该疫苗的主要机制是诱导患者体内产生高水平的抗EGF抗体,中和体内的EGF,从而抑制EGF/EGFR信号通路,进而抑制依赖该信号通路的肿瘤细胞的生长,达到治疗肿瘤的目的。
疫苗效价是重组EGF-CRM197疫苗的最重要的放行质量标准。常用的检测疫苗效价的方法为将疫苗免疫小鼠或豚鼠后,进行体内攻毒实验或获取血清进行抗体滴度测定,该方法操作复杂且耗时较长。参照2020年版中国药典“甲型肝炎灭活疫苗体外相对效力检查法”,通过比对不同批次重组EGF-CRM197疫苗中抗原(EGF)量与理化对照品的比值,我们建立了重组EGF-CRM197疫苗体外相对效力的测定方法,该方法中采用的捕获抗体为重组EGF-CRM197疫苗免疫小鼠后制备的单克隆抗体,该抗体可有效的与包被疫苗中的抗原结合,敏感度远高于商用购买的单克隆抗体。
此外,在临床使用中,重组EGF-CRM197疫苗免疫后诱导产生的中和抗体,中和患者血清中的EGF,从而发挥抗肿瘤效应,因此,血清中EGF浓度的下调也是评价疫苗免疫效能的重要衡量指标,研发一种特异性识别重组EGF-CRM197的单克隆抗体,作为EGF定量ELISA检测试剂盒的捕获或检测抗体,可用于定量检测免疫重组EGF-CRM197疫苗的患者,血清中EGF的浓度,进而评估重组EGF-CRM197疫苗的有效性,为患者加强免疫提供依据。
综上所述,研发一种识别重组EGF-CRM197疫苗的单克隆抗体,可用于检测重组EGF-CRM197疫苗的体外相对效力,为重组EGF-CRM197临床使用前进行质量控制提供了一种有力的手段;此外,一种识别重组EGF-CRM197疫苗的单克隆抗体,可用于人EGF定量ELISA检测试剂盒的制备。因此,伴随重组EGF-CRM197疫苗的开发及临床应用,研发一种识别重组EGF-CRM197疫苗的单克隆抗体具有重要意义。
发明内容
针对现有技术的不足及实际的需求,本发明提供了一种识别重组EGF-CRM197疫苗的单克隆抗体,所述单克隆抗体能够结合重组EGF-CRM197疫苗,在评价重组EGF-CRM197相对效价和临床分析中,评价疫苗免疫效能方面发挥了重要作用。
为达到此目的,本发明采用以下技术方案:
第一方面:本发明提供一种识别重组EGF-CRM197疫苗的单克隆抗体,所述单克隆抗体的轻链VL-CDR1的氨基酸序列为SEQ ID NO.1,轻链VL-CDR2的氨基酸序列为SEQ IDNO.2,轻链VL-CDR3的氨基酸序列为SEQ ID NO.3;
所述单克隆抗体的重链VH-CDR1的氨基酸序列为SEQ ID NO.4,重链VH-CDR2的氨基酸序列为SEQ ID NO.5,重链VH-CDR3的氨基酸序列为SEQ ID NO.6。
所述SEQ ID NO.1如下所示:
DIVLTQSPASLAVSLGQRATISCRAS KSVITSGYSY
所述SEQ ID NO.2如下所示:
MHWYQQKPGQPPKLLIY LAS
所述SEQ ID NO.3如下所示:
NLESGVPARFSGSGSGTDFTLNIHPVEEEDAATYYC QHSRELPFT
所述SEQ ID NO.4如下所示:
EVQLQQSGPELVKPGASVKMSCKAS GYTFTSYI
所述SEQ ID NO.5如下所示:
LHWVKQRPGQGLDWIGY INPYNDGT
所述SEQ ID NO.6如下所示:
KYNEKFKGKATLTSDKSSSTAYMELSSLTSEDSAVYYC ARWGWVVATDYTMDY
进一步的,所述抗体的轻链包括三个轻链CDR以及连接轻链CDR的轻链框架区;所述抗体的重链包括三个重链CDR以及用于连接重链CDR的重链框架区;
进一步的,所述单克隆抗体用于制备评估重组EGF-CRM197疫苗体外相对效力的试剂盒或定量检测血清中EGF浓度的ELISA试剂盒。
本发明还提供了一种制备单克隆抗体的方法,包括如下步骤:
步骤1:动物免疫:采用6周龄的BALB/c 小鼠,抗原为重组EGF-CRM197疫苗。免疫途径为皮下注射;每周给药1次,共给药4次。
步骤2:细胞融合:将步骤(1)中优选出的小鼠,制备脾细胞悬液。取其脾脏细胞与SP2/0骨髓瘤细胞开始融合,采用PEG介导的融合法进行融合。
步骤3:杂交瘤细胞的筛选:扩增步骤(2)中的杂交瘤细胞,取上清检测ELISA效价及抗体亚型,选取针对EGF抗原呈阳性的细胞进行克隆。为保证杂交瘤细胞株的阳性率和稳定地产生抗体,进行3-4次克隆,选取3-4次筛选均为100%阳性的克隆。
步骤4:杂交瘤细胞的克隆化:将步骤(3)筛选出的阳性孔用常规的有限稀释法克隆,获得单抗细胞S-172-4细胞;
步骤5:单克隆抗体的制备:裸鼠腹腔提前一周注射液体石蜡0.5 ml,将步骤(4)得到的S-172-4细胞用生理盐水调整至5×106/ml,腹腔注射200 µl,7-10天后,收集小鼠腹水。腹水通过Protein A层析柱纯化,先用A液 PB PH7.0 平衡层析柱,腹水样品上柱后,采用B液 0.1 M 甘氨酸-HCl PH2.7,线性洗脱,直至出现抗体的峰型,最终用1M PH 8.0Tris-Hcl将纯化后的抗体PH调节至7.2,过膜除菌,获得S-72-4单克隆抗体。
与现有技术相比,本发明的优势之处在于:本发明提供的单克隆抗体能够特异性的识别重组EGF-CRM197疫苗,具有中和EGF能力,能够用于可用于检测重组EGF-CRM197疫苗的体外相对效力,为重组EGF-CRM197临床使用前进行质量控制提供了一种有力的手段;此外,在临床使用中,重组EGF-CRM197疫苗免疫后诱导产生的中和抗体,中和患者血清中的EGF,从而发挥抗肿瘤效应,因此,血清中EGF浓度的下调也是评价疫苗免疫效能的重要衡量指标,研发一种特异性识别重组EGF-CRM197的单克隆抗体,作为EGF定量ELISA检测试剂盒的捕获或检测抗体,可用于定量检测免疫重组EGF-CRM197疫苗的患者,血清中EGF的浓度,进而评估重组EGF-CRM197疫苗的有效性,为患者加强免疫提供依据。评价疫苗免疫效能方面发挥了重要作用。
附图说明
图1为本发明的单克隆抗体S-172-4与商品化购买的抗人EGF抗体分别检测重组EGF-CRM197疫苗体外相对效力结果图。
图2为本发明的单克隆抗体S-172-4制备的人EGF定量ELISA检测试剂盒,标准品曲线。
具体实施方式
为更一步阐述本发明所采取的技术手段及其效果,以下结合附图并通过具体实施方式说明本发明的技术方案,但本发明并非局限在实施例范围内。
在本发明中,EGF即人EGF,也可以表示为hEGF。
实施例1:单克隆抗体S-172-4的制备过程
本实施例的主要步骤包括:动物免疫、细胞融合、杂交瘤细胞的筛选、杂交瘤细胞的克隆化和抗体制备等。
(1)动物免疫:采用6周龄的BALB/c 小鼠,抗原为重组EGF-CRM197疫苗。用10μg重组EGF-CRM197疫苗与Montanide ISA51VG佐剂(法国Seppic化学试剂公司,货号:T02621)等体积混合乳化后,于小鼠背部皮下注射;每周给药1次,共给药4次,末次免疫后一周,取脾脏进行融合。
(2)细胞融合:末次免疫后一周制备;
脾细胞悬液的制备:于细胞融合当天制备,取已经免疫EGF-CRM197疫苗的BALB/c小鼠,摘取眼球采血,并分离血清作为抗体检测时的阳性对照血清,同时颈脱位致死小鼠,取其脾脏,制备脾细胞悬液。
骨髓瘤细胞悬液的制备:提前两周复苏细胞,保证使用时细胞处于对数生长期;
饲养层细胞的制备:提前两天获得小鼠腹腔巨噬细胞,加入96孔板培养;
细胞融合:采用PEG介导融合细胞方法,取脾细胞与骨髓瘤细胞按照5:1的比例,在无血清的DMEM培养基中混匀,1500rpm离心5分钟,去掉上清,用力振动离心管,振散细胞,在1分钟内加入1ml 50%PEG(pH8.0,40℃),边加边摇动,加完后静置90秒,加入无血清的DMEM培养基终止融合,1500rpm离心5分钟,沉淀用HAT培养基悬浮,分装到96孔含有饲养细胞的细胞板中,37℃,5% CO2的细胞培养箱中培养。
(3)杂交瘤细胞的筛选
细胞培养5天后,用HAT培养基换液1次,第10天用HT培养基换液,等到融合细胞覆盖孔底10%-50%时,常规间接ELISA方法筛选阳性孔。用EGF包板,检测杂交瘤细胞培养上清,二抗为酶标记羊抗鼠抗体,小鼠抗血清为阳性对照,筛选出抗体表达量最高的杂交瘤细胞。
(4)杂交瘤细胞克隆化
筛选出特异性强阳性孔用常规的有限稀释法克隆,获得单克隆抗体细胞株S-172-4。
从原始孔中得到的阳性杂交瘤细胞,可能来源于二个或者多个杂交瘤细胞,他们分泌的抗体是不同质的,为了得到完全同质的单克隆抗体,必须并杂交瘤细胞进行克隆化;
制备待克隆的杂交瘤细胞悬液,用含20%血清的HT培养基稀释至8个细胞/ml,同时在杂交瘤细胞悬液中加入小鼠腹腔细胞,每毫升加入5E4个细胞。按每孔接种0.1ml细胞悬液,即每孔0.8个杂交瘤细胞;37℃,5% CO2的细胞培养箱中培养7-10天,出现肉眼可见的克隆即可检测抗体;在倒置显微镜下观察,标出只有单个克隆生长的孔,取出上清做抗体检测。
取抗体检测阳性孔细胞扩大培养,并冻存,同时,再进一步对阳性孔的细胞进行克隆化,用ELISA的方法对克隆化的单抗进行鉴别,筛选出分泌抗体。
(5)制备抗体
将筛选出的杂交瘤细胞进行扩大培养,取6周龄左右的裸鼠,裸鼠腹腔提前一周注射液体石蜡0.5 ml,将步骤(4)得到的S-172-4细胞用生理盐水调整至5×106/ml,腹腔注射200 µl,7-10天后,收集小鼠腹水。腹水通过Protein A层析柱纯化,先用A液 PB PH7.0 平衡层析柱,腹水样品上柱后,采用B液 0.1 M 甘氨酸-HCl PH2.7,线性洗脱,直至出现抗体的峰型,最终用1M PH 8.0 Tris-Hcl将纯化后的抗体PH调节至7.2,过膜除菌,最终获纯化后的S-172-4单克隆抗体。
所述单克隆抗体的轻链VL-CDR1的氨基酸序列为SEQ ID NO.1,轻链VL-CDR2的氨基酸序列为SEQ ID NO.2,轻链VL-CDR3的氨基酸序列为SEQ ID NO.3;
所述单克隆抗体的重链VH-CDR1的氨基酸序列为SEQ ID NO.4,重链VH-CDR2的氨基酸序列为SEQ ID NO.5,重链VH-CDR3的氨基酸序列为SEQ ID NO.6。
所述SEQ ID NO.1如下所示:
DIVLTQSPASLAVSLGQRATISCRAS KSVITSGYSY
所述SEQ ID NO.2如下所示:
MHWYQQKPGQPPKLLIY LAS
所述SEQ ID NO.3如下所示:
NLESGVPARFSGSGSGTDFTLNIHPVEEEDAATYYC QHSRELPFT
所述SEQ ID NO.4如下所示:
EVQLQQSGPELVKPGASVKMSCKAS GYTFTSYI
所述SEQ ID NO.5如下所示:
LHWVKQRPGQGLDWIGY INPYNDGT
所述SEQ ID NO.6如下所示:
KYNEKFKGKATLTSDKSSSTAYMELSSLTSEDSAVYYC ARWGWVVATDYTMDY
实施例2:单克隆抗体S-172-4/商品化单克隆抗体用于检测重组EGF-CRM197疫苗体外相对效力
(1)将重组EGF-CRM197疫苗供试品、重组EGF-CRM197疫苗参比品用Na2CO3-NaHCO3缓冲液分别稀释至1000、500、250、125、62.5、31.25、15.6、7.8pg/ml,将稀释好的8个梯度的重组EGF-CRM197疫苗供试品和参比品包被酶标板,每个稀释度2个复孔,每孔100 μl, 2-8℃过夜。然后PBST洗板、拍干。用200 μl封闭液进行封闭,37℃孵育2h。
(2)取已包被好的酶标板,加入适宜浓度的S-172-4杂交瘤单克隆抗体或者商品化的兔抗人EGF单克隆抗体1号(货号ab184265,abcam),或商品化的兔抗人EGF单克隆抗体2号(货号AF5148,affinity bioseience),37℃孵育1 h。洗板后,1μg/ml羊抗鼠IgG-HRP或羊抗兔IgG-HRP,每孔100 μl ,37℃孵育1h。
(3)洗板后,加入100 μl/孔的TMB,避光孵育15min后,加50 μl/孔终止液,450nm读数。
(4)结果计算
将线性最好的8个浓度点中选取5个浓度的重组EGF-CRM197疫苗供试品品和理化对照品的OD值记录于下表1。
表1.
疫苗包被浓度 | 参比疫苗OD(S) | 供试品疫苗OD(T) |
500 | S5 | T5 |
250 | S4 | T4 |
125 | S3 | T3 |
62.5 | S2 | T2 |
31.25 | S1 | T1 |
体外相对效价=供试品抗原含量/参比疫苗抗原相对含量
供试品抗原含量/参比抗原含量=antilg(V/W×lg2)
V=0.2(T1+T2+T3+T4+T5-S1-S2-S3-S4-S5)
W=0.1(T5-T1+S5-S1)+0.05(T4-T2+S4-S2)
本发明的单克隆抗体S-172-4与商品化购买的抗人EGF抗体分别检测重组EGF-CRM197疫苗,OD响应值如图1所示:使用本发明的S-172-4单克隆抗体,重组EGF-CRM197浓度在7.8~1000pg/ml之间,都显示出良好的线性关系;而商品化购买的抗人单克隆抗体仅在125~1000pg/ml之间,存在一定的线性关系,灵敏度远低于本发明的S-172-4抗体。
采用重组EGF-CRM197样品作为供试品,3人次检测,每人次检测3次,每批样品3人次共检测9次。分析结果显示,采用本发明的S-172-4单克隆抗体检测重组EGF-CRM197疫苗的体外相对效力,结果稳定,重复性较好,变异系数CV在10%以内。而采用商品化的抗人EGF抗体,重复性差,变异系数CV在25%以上。
表2. S-172-4单克隆抗体/市售抗人EGF抗体检测重组EGF-CRM197疫苗体外相对效力结果对比
实施例2:单克隆抗体S-172-4用于制备人EGF检测试剂盒
健康人外周血血清中EGF浓度约在0~300pg/ml(中位值约150pg/ml),肺癌患者外周血血清中EGF浓度约在0~500pg/ml(中位值约250pg/ml)。重组EGF-CRM197疫苗作用机制为诱导机体产生针对EGF的中和抗体,进而降低血清中EGF的浓度,从而达到抗肿瘤的作用,因此血清中EGF的监测是评估重组EGF-CRM197疫苗免疫效能的重要临床指标。目前市售的抗人EGF抗体用于制备人EGF定量ELISA检测试剂盒,一般仅能识别纳克级别(ng/ml)的EGF,无法满足临床的需求。市面上进口的R&D公司的定量ELISA检测试剂盒,可用于人血清中EGF含量的测定,但定价较高,且仅用于科学研究,并未获得医疗器械许可,无法应用于重组EGF-CRM197疫苗上市后的临床检测。因此,伴随开发适用于重组EGF-CRM197疫苗临床应用的人EGF定量检测试剂盒,具有重要意义。
本实施例中,我们采用了本发明的S-172-4单克隆抗体作为捕获抗体,选用市售的兔抗人EGF多克隆抗体(货号ab9695,abcam)作为检测抗体。选取市售的兔抗人EGF单克隆抗体(货号AF5148,affinity bioseience)作为捕获抗体,市售的兔抗人EGF多克隆抗体(货号ab9695,abcam)作为检测抗体同样进行如下操作。
用pH9.6的NaCO3-NaHCO3缓冲液,将S-172-4单克隆抗体稀释至终浓度5μg/ml,加入96微孔板中,100μl/孔,2-8℃度包被过夜。
将S-172-4单克隆抗体包被好的PBST洗板、拍干,加入200 μl封闭液进行封闭,37℃孵育2h。
标准品/样品的配置:将EGF标准品用缓冲液稀释为梯度500、250、125、62.5、31.3、15.6、7.8pg/ml,缓冲液作为空白“0”点。
将标准品和待测血清样本分别加入封闭后的96孔板中,200μl/孔,平行做2孔,盖上封板膜,37℃孵育1小时。
PBST洗板3次、拍干,加入10μg/ml 市售的兔抗人EGF多克隆抗体作为检测抗体,100μl/孔,37℃孵育1小时。
PBST洗板3次、拍干,加入1μg/ml羊抗鼠IgG-HRP,100μl/孔,37℃孵育1小时。
PBST洗板3次、拍干,加入100 μl/孔的TMB,避光孵育15min后,加50 μl/孔终止液,450nm/650nm读数。
结果计算:将标准品溶液和供试品的OD值取平均值后扣除空白对照平均值的OD值,用标准品溶液做四参数逻辑曲线,带入供试品的OD值,计算样品孔的EGF浓度。
本发明的单克隆抗体S-172-4,制备的人EGF定量检测试剂盒绘制的标准曲线OD读数,如下表所示,S-172-4单克隆抗体制备的人EGF定量ELISA检测试剂盒标准品OD读数,根据标准曲线OD读数绘制的标准曲线见图2。结果显示,用S-172-4制备的人EGF定量检测试剂盒,在15.6-500pg/ml之间,具有良好的线性关系,R2>0.95,而市售的抗EGF单克隆抗体仅在500pg/ml浓度时有响应。
表3. S-172-4单克隆抗体/市售抗人EGF抗体制备的人EGF定量ELISA检测试剂盒测定EGF标准品OD值对比
标准品EGF浓度(pg/ml) | S-172-4单克隆抗体组 | 市售抗EGF单克隆抗体组 |
500 | 2.025 | 0.35 |
250 | 1.295 | 0.18 |
125 | 0.781 | 0.16 |
62.5 | 0.425 | 0.152 |
31.25 | 0.227 | 0.143 |
15.625 | 0.142 | 0.14 |
7.8125 | 0.143 | 0.14 |
Claims (5)
1.一种识别重组EGF-CRM197疫苗的单克隆抗体,所述单克隆抗体的轻链VL-CDR1的氨基酸序列为SEQ ID NO.1,轻链VL-CDR2的氨基酸序列为SEQ ID NO.2,轻链VL-CDR3的氨基酸序列为SEQ ID NO.3;
所述单克隆抗体的重链VH-CDR1的氨基酸序列为SEQ ID NO.4,重链VH-CDR2的氨基酸序列为SEQ ID NO.5,重链VH-CDR3的氨基酸序列为SEQ ID NO.6。
2.根据权利要求1所述识别重组EGF-CRM197疫苗的单克隆抗体,其特征在于,所述抗体的轻链包括三个轻链CDR以及连接轻链CDR的轻链框架区;所述抗体的重链包括三个重链CDR以及用于连接重链CDR的重链框架区。
3.一种识别重组EGF-CRM197疫苗的单克隆抗体的应用,其特征在于,所述单克隆抗体用于制备评估重组EGF-CRM197疫苗体外相对效力的试剂盒或定量检测血清中EGF浓度的ELISA试剂盒。
4.根据权利要求3所述的识别重组EGF-CRM197疫苗的单克隆抗体的应用,其特征在于,当所述单克隆抗体用于制备评估重组EGF-CRM197疫苗体外相对效力的试剂盒时,重组EGF-CRM197浓度在7.8~1000pg/ml之间,显示出良好的线性关系。
5.根据权利要求3所述的识别重组EGF-CRM197疫苗的单克隆抗体的应用,其特征在于,当所述单克隆抗体用于定量检测血清中EGF浓度的ELISA试剂盒时,重组EGF-CRM197浓度在15.6-500pg/ml之间,具有良好的线性关系。
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CN112079927A (zh) * | 2020-09-18 | 2020-12-15 | 西安桑尼赛尔生物医药有限公司 | 一种cd123结合蛋白、含其的car及其应用 |
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CN105801699A (zh) * | 2014-12-30 | 2016-07-27 | 深圳赛保尔生物药业有限公司 | 一种重组抗egfr单克隆抗体 |
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