饲料科学与技术 Feed science and technology

黄曲霉毒素B1单克隆抗体的制备及基于该抗体的黄曲霉毒素B1免疫学检测方法的建立

展开
  • 1. 河南省农业科学院动物免疫学重点实验室, 农业部动物免疫学重点实验室, 郑州 450002;
    2. 郑州人民医院 泌尿外科, 郑州 450003;
    3. 河南农业大学生命科学学院, 郑州 450002;
    4. 河南农业大学 牧医工程学院, 郑州 450002
姚静静(1988-),女,河南禹州人,助理研究员,硕士,研究方向为食品安全检测方法。E-mail:yaojinglucky8023@163.com

收稿日期: 2018-08-02

  网络出版日期: 2019-03-18

基金资助

"十二五"国家科技支撑计划项目(2014BAD13B05);国家生猪产业技术体系(CARS-35)

Establishment of Immunologic Detection Method for Aflatoxin B1 Based on Preparation of Aflatoxin B1 Monoclonal Antibody

Expand
  • 1. Key Laboratory of Animal Immunology of Ministry of Agriculture, Key Laboratory of Animal Immunology of Henan Academy of Agriculture Science, Zhengzhou 450002, China;
    2. Department of Urology, People's Hospital of Zhengzhou, Zhengzhou 450003, China;
    3. School of Life Science, Henan Agricultural University, Zhengzhou 450002, China;
    4. College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China

Received date: 2018-08-02

  Online published: 2019-03-18

摘要

为了快速准确检测粮食与饲料中黄曲霉毒素B1(AFB1)含量,本试验制备了具有高灵敏度的AFB1单克隆抗体,并将其应用于AFB1间接竞争酶联免疫吸附测定(ELISA)方法的建立。采用碳二亚胺(EDC)法制备AFB1完全抗原[AFB1-牛血清白蛋白(BSA)和AFB1-鸡卵白蛋白(OVA)],并免疫BALB/c小鼠。经细胞融合,筛选出能够分泌高灵敏度AFB1单克隆抗体的杂交瘤细胞株。采用体内诱生腹水法,大量制备AFB1单克隆抗体,并对其免疫学特性进行鉴定。基于制备的AFB1单克隆抗体,建立AFB1间接竞争ELISA检测方法。结果显示:通过筛选,获得稳定产生抗体的杂交瘤细胞株9H1F5,经间接ELISA方法测定,获得的AFB1单克隆抗体的效价高达5.12×105,亲和力常数(Ka)=6.72×107 L/mol,抗体亚型为免疫球蛋白G2(IgG2)。采用间接竞争ELISA方法测得AFB1的半数抑制浓度(IC50)为0.232 ng/mL,检测范围为0.014~1.920 ng/mL,最低检测限为0.014 ng/mL。同时,该AFB1单克隆抗体与黄曲霉毒素B2(AFB2)、黄曲霉毒素G1(AFG1)、黄曲霉毒素G2(AFG2)、黄曲霉毒素M1(AFM1)的交叉反应率分别为40.21%、33.19%、31.96%、4.40%,与其他霉菌毒素无交叉反应。由上述结果可知,本试验成功制备了灵敏度高、特异性强的AFB1单克隆抗体,并基于该抗体建立了检测AFB1的间接竞争ELISA方法,为粮食与饲料中AFB1快速免疫学检测奠定了基础。

本文引用格式

姚静静, 胡骁飞, 韩俊岭, 徐帆, 滕蔓, 邢云瑞, 孙亚宁, 邓瑞广, 张改平 . 黄曲霉毒素B1单克隆抗体的制备及基于该抗体的黄曲霉毒素B1免疫学检测方法的建立[J]. 动物营养学报, 2019 , 31(3) : 1405 -1414 . DOI: 10.3969/j.issn.1006-267x.2019.03.048

Abstract

In order to detect aflatoxin B1 (AFB1) content in cereals and feeds rapidly and correctly, a highly sensitive AFB1 monoclonal antibody was prepared and an indirect competitive enzyme-linked immunosorbent assay (ELISA) for AFB1 was established. AFB1 complete antigens[AFB1-bovine serum albumin (BSA) and AFB1-ovalbumin (OVA)] were prepared via carbodiimide (EDC) method and used to immunize the BALB/c mice. After the cell fusion, hybridoma cell line which could secret highly sensitive AFB1 monoclonal antibody was selected. Then a lot of AFB1 monoclonal antibodies were prepared using inducing ascites in vivo, and the AFB1 monoclonal antibody properties were identified. Finally, an indirect competitive ELISA method for detecting AFB1 based on AFB1 monoclonal antibody was established. A hybridoma cell line 9H1F5 was selected, and the titer of AFB1 monoclonal antibody was up to 5.12×105, the affinity constant (Ka)=6.72×107 L/mol, and the subtype was immunoglobulin G2 (IgG2) measured by indirect ELISA method. According to the indirect competitive ELISA, the median inhibitory concentration (IC50) of AFB1 was 0.232 ng/mL, the detection range was 0.014 to 1.920 ng/mL, and the limit of detection (LOD) of AFB1 was 0.014 ng/mL. Besides, cross reaction rates of AFB1 monoclonal antibody with aflatoxin B2 (AFB2), aflatoxin G1 (AFG1), aflatoxin G2 (AFG2) and aflatoxin M1 (AFM1) were 40.21%, 33.19%, 31.96% and 4.40%, respectively, but there were no cross reactions with other mycotoxins. According to the above results, the highly sensitive and specific AFB1 monoclonal antibody is successfully prepared, and the indirect competitive ELISA method for AFB1 detection is established on the base of AFB1 monoclonal antibody, which can provide the foundation for AFB1 rapid immunological detection in cereals and feeds.

参考文献

[1] BENNETT J W,KLICH M.Mycotoxins[J].Clinical Microbiology Reviews,2003,16(3):497-516.  

[2] MACHIDA M,ASAI K,SANO M,et al.Genome sequencing and analysis of Aspergillus oryzae[J].Nature,2005,438(7071):1157-1161.  

[3] WU F,GROOPMAN J D,PESTKA J J.Public health impacts of foodborne mycotoxins[J].Annual Review of Food Science and Technology,2014,5:351-372.

[4] 陈兴祥,黄克和.黄曲霉毒素对畜禽免疫机能的影响[J].中国兽医杂志,2002,38(10):33-35.

[5] OSTRY V,MALIR F,TOMAN J,et al.Mycotoxins as human carcinogens-the IARC monographs classification[J].Mycotoxin Research,2017,33(1):65-73.  

[6] IARC.International Agency for Research on Cancer,WHO IARC Monographs on the evaluation of carcinogenic risks to humans Some traditional herbal medicines,some mycotoxins naphthalene and styrene aflatoxins[C].Lyon:IARC, 2002.

[7] CHOI S,JUN H,BANG J,et al.Behaviour of Aspergillus flavus and Fusarium graminearum on rice as affected by degree of milling,temperature,and relative humidity during storage[J].Food Microbiology,2015,46:307-313.

[8] HU X F,HU R,ZHANG Z W,et al.Development of a multiple immunoaffinity column for simultaneous determination of multiple mycotoxins in feeds using UPLC-MS/MS[J].Analytical and Bioanalytical Chemistry,2016,408(22):6027-6036.  

[9] GARCÍA-MORALEJA A,FONT G,MAÑES J,et al.Development of a new method for the simultaneous determination of 21 mycotoxins in coffee beverages by liquid chromatography tandem mass spectrometry[J].Food Research International,2015,72:247-255.

[10] ZHENG W L,TENG J,CHENG L,et al.Hetero-enzyme-based two-round signal amplification strategy for trace detection of aflatoxin B1 using an electrochemical aptasensor[J].Biosensors and Bioelectronics,2016,80:574-581.

[11] GARCÍA-FONSECA S,BALLESTEROS-GÍMEZ A,RUBIO S.Restricted access supramolecular solvents for sample treatment in enzyme-linked immuno-sorbent assay of mycotoxins in food[J].Analytica Chimica Acta,2016,935:129-135.

[12] LEE N A,WANG S,ALLAN R D,et al.A rapid aflatoxin B1 ELISA:development and validation with reduced matrix effects for peanuts,corn,pistachio,and soybeans[J].Journal of Agricultural and Food Chemistry,2004,52(10):2746-2755.  

[13] HU X,YAO J,WANG F,et al.Eu3+-labeled IgG-based time-resolved fluoroimmunoassay for highly sensitive detection of aflatoxin B1 in feed[J].Journal of the Science of Food and Agriculture,2018,98(2):674-680.  

[14] WANG D,ZHANG Z W,LI P W,et al.Europium nanospheres-based time-resolved fluorescence for rapid and ultrasensitive determination of total aflatoxin in feed[J].Journal of Agricultural and Food Chemistry,2015,63(47):10313-10318.  

[15] HANG D H,LI P W,ZHANG Q,et al.Ultrasensitive nanogold probe-based immunochromatographic assay for simultaneous detection of total aflatoxins in peanuts[J].Biosensors and Bioelectronics,2010,26(6):2877-2882.

[16] LI P W,ZHANG Z W,ZHANG Q,et al.Current development of microfluidic immunosensing approaches for mycotoxin detection via capillary electromigration and lateral flow technology[J].Electrophoresis,2012,33(15):2253-2265.  

[17] CHEN Y Q,CHEN Q,HAN M M,et al.Development and optimization of a multiplex lateral flow immunoassay for the simultaneous determination of three mycotoxins in corn,rice and peanut[J].Food Chemistry,2016,213:478-484.

[18] KOLOSOVA A Y,SHIM W B,YANG Z Y,et al.Direct competitive ELISA based on a monoclonal antibody for detection of aflatoxin B1.Stabilization of ELISA kit components and application to grain samples[J].Analytical and Bioanalytical Chemistry,2006,384(1):286-294.  

[19] 王磊,胡骁飞,滕蔓,等.抗黄曲霉毒素B1单抗制备及免疫学定量方法建立[J].中国公共卫生,2012,28(1):58-60.

[20] 谢珲,章先,王歆,等.黄曲霉毒素B1单克隆抗体的制备及间接竞争ELISA检测技术研究[J].微生物学通报,2015,42(10):2033-2040.

[21] KONG D Z,XIE Z J,LIU L Q,et al.Development of ic-ELISA and lateral-flow immunochromatographic assay strip for the detection of vancomycin in raw milk and animal feed[J].Food and Agricultural Immunology,2017,28(3):414-426.  

[22] 宋青龙,李成洪,傅巍,等.黄曲霉毒素B1胶体金快速定量检测试剂盒的研发[J].动物营养学报,2017,29(10):3703-3709.

[23] KEMP H A,MORGAN M R A.Studies on the detrimental effects of bivalent binding in a microtitration plate ELISA and possible remedies[J].Journal of Immunological Methods,1986,94(1/2):65-72.

[24] 王磊,胡骁飞,职爱民,等.黄曲霉毒素B1人工抗原及鼠源多克隆抗血清的制备[J].食品科技,2011,36(3):277-281.

[25] LANE R D,CRISSMAN R S,GINN S.High efficiency fusion procedure for producing monoclonal antibodies against weak immunogens[J].Methods in Enzymology,1986,121:183-192.

[26] 刘晓波,蔡美英,王霞,等.一种简单实用纯化腹水McAb方法——辛酸/硫酸铵法[J].华西医科大学学报,1999,30(4):455-456.

[27] BEATTY J D,BEATTY B G,VLAHOS W G.Measurement of monoclonal antibody affinity by non-competitive enzyme immunoassay[J].Journal of Immunological Methods,1987,100(1/2):173-179.

[28] 万文徽.单克隆抗体亲和常数的测定[J].单克隆抗体通讯,1993,9(2):72-75.

[29] YAO J J,WANG F Y,HAN J L,et al.Novel fluoroimmunoassays for detecting ochratoxin A using CdTe quantum dots[J].Journal of Biophotonics,2017,10:657-663.
文章导航

/