光激化学发光免疫分析技术在仙台病毒检测中的应用
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协和青年基金和中央高校基本科研业务费专项资金资助(3332013042;33320140015)。


Development of an amplified luminescent proximity homogeneous assay for detecting Sendai virus
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    摘要:

    目的 应用光激化学发光免疫分析技术(AlphaLISA)建立仙台病毒检测方法。方法 通过方阵实验筛选仙台病毒AlphaLISA检测的最佳抗原浓度以及供体微珠与受体微珠的最佳受试浓度及比例, 对大鼠血清进行测试, 确立血清检测浓度;对40份大鼠血清分别使用AlphaLISA检测方法和ELISA检测方法进行检测, 并对检测结果进行比较。结果 生物素化标记的仙台病毒多肽类抗原的最佳测试浓度为250 nmol/L, 供体微珠与受体微珠的最佳比例为1:1, 使用浓度为20 μg/mL, 在AlphaLISA检测方法中大鼠血清测试最佳使用浓度1:10000;共检测40份大鼠血清, ELISA方法检出阳性7份, 阳性率为17.5%, AlphaLISA方法检出阳性8份, 阳性率为20.0%, ELISA检测阳性的7份血清经AlphaLISA方法检测均为阳性, AlphaLISA检出的另外一份样品经IFA方法验证为阳性。结论 初步建立了仙台病毒光激化学发光免疫分析技术(AlphaLISA)的检测方法, 该方法敏感性堪比经典ELISA方法, 且血清样本的用量减少, 无需洗涤等步骤, 在方法的简并性及准确性上有一定优势。

    Abstract:

    Objective To establish the amplified luminescent proximity homogeneous assay(AlphaLISA) for the detection of Sendai virus. Methods The antigen concentration, serum concentration and the donor beads/acceptor beads ratio used in the AlphaLISA method were optimumized by the phalanx experiments, then the antibodies of Sendai Virus in 40 rat sera were detected by the established AlphaLISA method and ELISA detection method. The results were compared and the differentia between the two methods was confirmed by IFA. Results The optimum concentration of SV bio-peptide in AlphaLISA assay was 250 nmol/L, the best proportion of donor beads/acceptor beads ratio was 1:1, using the concentration of 20 μg/mL and the serum dilution was 1:10000.7 of the 40 rat sera were detected SV positive by ELISA, the positive rate was 17.5%, 8 of the 40 rat sera were determined SV positive by AlphaLISA, and the positive rate was 20.0%, the AlphaLISA positive serum was confirmed by IFA. Conclusions We preliminary established the Amplified Luminescent Proximity Homogeneous Assay(AlphaLISA) for the detection of Sendai virus. The sensitivity of the method is comparable to classical ELISA method, but this method use less serum samples and without washing steps. The method has some advantages in degeneracy and accuracy.

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常慧,高伟,张江义,向志光,魏强.光激化学发光免疫分析技术在仙台病毒检测中的应用[J].中国比较医学杂志,2015,25(5):58~61.

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  • 最后修改日期:2015-04-08
  • 在线发布日期: 2015-05-29
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