Article(id=1307013461842612961, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307013423896753139, articleNumber=null, orderNo=null, doi=10.11843/j.issn.0366-6964.2026.03.033, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1752768000000, receivedDateStr=2025-07-18, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1789545892439, onlineDateStr=2026-09-16, pubDate=1774195200000, pubDateStr=2026-03-23, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789545892439, onlineIssueDateStr=2026-09-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789545892439, creator=13701087609, updateTime=1789545892439, updator=13701087609, issue=Issue{id=1307013423896753139, tenantId=1146029695717560320, journalId=1306274286668972124, year='2026', volume='57', issue='3', pageStart='1177', pageEnd='1776', issueExtLink='null', onlineDate='null', pubDate='1774195200000', pubDateStr='2026-03-23', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1789545883392, creator='13701087609', updateTime=1789609930841, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1307282058464743901, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307013423896753139, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1307282058464743902, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307013423896753139, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1571, endPage=1580, ext={EN=ArticleExt(id=1307013462060716770, articleId=1307013461842612961, tenantId=1146029695717560320, journalId=1306274286668972124, language=EN, title=Establishment and Application of a Double Antigen Sandwich ELISA Method for Swine Fever Virus, columnId=1307007432299930010, journalTitle=Acta Veterinaria et Zootechnica Sinica, columnName=PREVENTIVE VETERINARY MEDICINE, runingTitle=null, highlight=null, articleAbstract=
Establishment of a double-antigen sandwich ELISA for the detection of antibodies against classical swine fever virus (CSFV) E2 protein. The complete E2 protein sequences of CSFV and bovine viral diarrhea virus (BVDV) were aligned using BioEdit software to identify CSFV-specific epitopes. A recombinant pCDNA3.1-2×rE2-His expression vector was constructed. The 2×rE2-His protein was expressed in CHO cells, followed by thrombin cleavage to remove the His-tag. The purified His-tag-free 2×rE2 protein was used as the coating antigen, while horseradish peroxidase (HRP)-labeled 2×rE2-His protein served as the detection antigen. After systematic optimization of reaction conditions, a double-antigen sandwich ELISA method was successfully established. The specificity, sensitivity, and repeatability of the assay were evaluated, and its concordance rate with a commercial ELISA kit was compared. The optimized assay conditions were as follows: antigen coating concentration at 0.5 μg·mL-1, serum dilution at 1∶4, and enzyme-labeled antigen dilution at 1∶40 000. The method exhibited no cross-reactivity with positive sera against other common swine pathogens, including senecavirus A (SVA), porcine pseudorabies virus (PRV), porcine epidemic diarrhea virus (PEDV), foot-and-mouth disease virus (FMDV), and porcine reproductive and respiratory syndrome virus (PRRSV), nor with BVDV sera, which frequently causes serological cross-reactivity, demonstrating high specificity. The maximum detectable dilution ratio for antibody-positive sera reached 1∶2 048. Both intra-assay and inter-assay coefficients of variation were below 10%, indicating excellent repeatability. The concordance rate with the IDEXX CSFV Antibody Test Kit was 97.1%. To further evaluate the assay, both the established double-antigen sandwich ELISA and the IDEXX kit were used to monitor antibody kinetics in two healthy pigs immunized with CSFV C-strain vaccine combined with an E2 subunit vaccine. The developed ELISA detected antibody responses 6 days earlier than the IDEXX kit. Both methods demonstrated that antibody levels peaked at 37 days post-immunization and subsequently stabilized. In this study, a double-antigen sandwich ELISA antibody detection method for CSFV was established with high specificity, sensitivity and reproducibility, which is suitable for the clinical diagnosis and evaluation of immunization effect of swine fever.
, authors=Yage XIE, Juncong LUO, Zhengwang SHI, Huancheng LIAO, Jie CHEN, Yuqian ZHU, Lin WANG, Qianqian YANG, Jiahui WU, Yi RU, Hong TIAN, Jijun HE, authorsList=Yage XIE, Juncong LUO, Zhengwang SHI, Huancheng LIAO, Jie CHEN, Yuqian ZHU, Lin WANG, Qianqian YANG, Jiahui WU, Yi RU, Hong TIAN, Jijun HE, authorCompany=null, correspAuthors=Hong TIAN, Jijun HE, authorNote=null, correspAuthorsNote=
, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1307013466192106227, articleId=1307013461842612961, tenantId=1146029695717560320, journalId=1306274286668972124, language=CN, title=猪瘟病毒双抗原夹心ELISA抗体检测方法的建立与应用, columnId=1307007432459313564, journalTitle=畜牧兽医学报, columnName=预防兽医, runingTitle=null, highlight=null, articleAbstract=
旨在建立检测猪瘟病毒E2蛋白抗体的双抗原夹心ELISA方法。利用BioEdit软件对比猪瘟病毒与牛病毒性腹泻病毒E2蛋白完整序列,筛选猪瘟病毒E2蛋白特异性序列,构建pCDNA3.1-2×rE2-His重组表达载体,通过CHO细胞表达2×rE2-His蛋白,采用凝血酶切除蛋白His标签,将切除His标签的2×rE2蛋白作为包被抗原,辣根过氧化物酶标记的2×rE2-His蛋白作为检测抗原,经过一系列的反应条件优化,建立了双抗原夹心ELISA方法,对其特异性、敏感性、重复性进行评估,并比较与商品化试剂盒的符合率。结果表明,该方法的抗原包被浓度为0.5 μg·mL-1,血清稀释度为1∶4,酶标抗原稀释度为1∶40 000;该方法与其他常见猪病(塞内卡病毒、猪伪狂犬病病毒、猪流行性腹泻病毒、口蹄疫病毒、猪繁殖与呼吸综合征病毒)阳性血清无交叉反应、与血清学检测中易发生交叉反应的牛病毒性腹泻病毒阳性血清不反应,具有良好的特异性;可检测抗体阳性血清的最大稀释比例达1∶2 048;批内、批间变异系数均小于10%,具有良好的重复性;与IDEXX猪瘟抗体检测试剂盒的检测结果符合率为97.1%。本研究建立的双抗原夹心ELISA检测方法和IDEXX猪瘟抗体检测试剂盒同时评价猪瘟活疫苗(C株)联合E2亚单位疫苗免疫的2只健康猪抗体消长规律,本方法可提前6 d检出抗体应答,两种方法均显示抗体水平在免疫后37 d达到高峰,随后趋于稳定。本研究建立的猪瘟病毒双抗原夹心ELISA抗体检测方法特异性强、敏感性高、重复性好,适用于猪瘟的临床诊断与免疫效果评估。
, authors=谢亚格, 罗俊聪, 石正旺, 廖焕程, 陈婕, 朱昱茜, 王琳, 杨倩倩, 武嘉惠, 茹毅, 田宏, 何继军, authorsList=谢亚格, 罗俊聪, 石正旺, 廖焕程, 陈婕, 朱昱茜, 王琳, 杨倩倩, 武嘉惠, 茹毅, 田宏, 何继军, authorCompany=null, correspAuthors=田宏, 何继军, authorNote=
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Comparison of CSFV and BVDV E2 protein sequences, figureFileSmall=Q7DVspaeVyCVO5Yrs8x67A==, figureFileBig=0m3kqsHs5R5fHcRXBsvm4Q==, tableContent=null), ArticleFig(id=1307281725755777731, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=图1, caption=
CSFV与BVDV E2蛋白序列对比, figureFileSmall=Q7DVspaeVyCVO5Yrs8x67A==, figureFileBig=0m3kqsHs5R5fHcRXBsvm4Q==, tableContent=null), ArticleFig(id=1307281725860635332, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Fig.2, caption=
SDS-PAGE analysis of CSFV 2×rE2-His protein (A) and Western blot identification of 2×rE2-His protein (B)M. Protein marker; 1. 2×rE2-His protein; 2. Identification of the reactivity of 2×rE2-His protein and CSFV antibody-positive serum; 3. Identification of the reactivity of 2×rE2-His protein and CSFV antibody-negative serum
, figureFileSmall=7O/gSWh8apPF88ZORoQcJQ==, figureFileBig=UWx/rHrobhxYkbQn6RIh8w==, tableContent=null), ArticleFig(id=1307281725931938501, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=图2, caption=
CSFV 2×rE2-His蛋白SDS-PAGE分析(A)及2×rE2-His蛋白的Western blot 鉴定(B)M.蛋白质分子质量标准;1. 2×rE2-His蛋白;2. 2×rE2-His蛋白与CSFV抗体阳性血清反应原性鉴定;3. 2×rE2-His蛋白与CSFV抗体阴性血清反应原性鉴定
, figureFileSmall=7O/gSWh8apPF88ZORoQcJQ==, figureFileBig=UWx/rHrobhxYkbQn6RIh8w==, tableContent=null), ArticleFig(id=1307281726179402439, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Fig.3, caption=
Characterization of protein reactivity after digestion, figureFileSmall=bUAvnz7kUylOXzrPN6/sPA==, figureFileBig=iK+el8yVUVqcKo2gqFv1UA==, tableContent=null), ArticleFig(id=1307281726242317000, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=图3, caption=
酶切后蛋白反应性鉴定, figureFileSmall=bUAvnz7kUylOXzrPN6/sPA==, figureFileBig=iK+el8yVUVqcKo2gqFv1UA==, tableContent=null), ArticleFig(id=1307281726296842953, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Fig.4, caption=
Determination of critical values, figureFileSmall=0YgosA+IWpVYw92kQbLcfg==, figureFileBig=XLkFzg1h41HlscBAR0YG3w==, tableContent=null), ArticleFig(id=1307281726586249930, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=图4, caption=
临界值的确定, figureFileSmall=0YgosA+IWpVYw92kQbLcfg==, figureFileBig=XLkFzg1h41HlscBAR0YG3w==, tableContent=null), ArticleFig(id=1307281726682718923, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Fig.5, caption=
ELISA specificity test, figureFileSmall=hQtijz2rvUwwPTOCDTjYcw==, figureFileBig=iucp1SyPyhd5JorweCmqmw==, tableContent=null), ArticleFig(id=1307281726758216396, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=图5, caption=
ELISA特异性试验, figureFileSmall=hQtijz2rvUwwPTOCDTjYcw==, figureFileBig=iucp1SyPyhd5JorweCmqmw==, tableContent=null), ArticleFig(id=1307281726829519565, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Fig.6, caption=
ELISA with IDEXX kit sensitivity test, figureFileSmall=BBdLMgD/CkSEAq6YXN5nIA==, figureFileBig=CiGXNf2beU2iYeIU8z5qQg==, tableContent=null), ArticleFig(id=1307281727014068942, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=图6, caption=
ELISA与IDEXX试剂盒敏感性试验, figureFileSmall=BBdLMgD/CkSEAq6YXN5nIA==, figureFileBig=CiGXNf2beU2iYeIU8z5qQg==, tableContent=null), ArticleFig(id=1307281727089566415, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Fig.7, caption=
Detection of antibody patterns, figureFileSmall=vpFnoWoQkkf+8WjM18xHcQ==, figureFileBig=CiGDtDgpZQUskY2IXMZJxA==, tableContent=null), ArticleFig(id=1307281727165063888, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=图7, caption=
抗体消长规律检测, figureFileSmall=vpFnoWoQkkf+8WjM18xHcQ==, figureFileBig=CiGDtDgpZQUskY2IXMZJxA==, tableContent=null), ArticleFig(id=1307281727232172753, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Table 1, caption=
Determination of optimal reaction conditions for ELISA
, figureFileSmall=null, figureFileBig=null, tableContent=
反应条件 Reaction condition | 包被抗原 Encapsulated antigen | 待检样品 Sample | 酶标抗原 Enzyme-labeled antigen | 底物 Substrate |
|---|
最佳稀释比例 Optimal dilution ratio | 0.5 µg·mL-1 | 1∶4 | 1∶40 000 | 50 µL |
最佳反应条件 Optimal reaction conditions | 4 ℃ 10 h | 37 ℃ 30 min | 37 ℃ 30 min | 37 ℃ 12 min |
), ArticleFig(id=1307281727513191122, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=表1, caption=
ELISA最佳反应条件的确定
, figureFileSmall=null, figureFileBig=null, tableContent=
反应条件 Reaction condition | 包被抗原 Encapsulated antigen | 待检样品 Sample | 酶标抗原 Enzyme-labeled antigen | 底物 Substrate |
|---|
最佳稀释比例 Optimal dilution ratio | 0.5 µg·mL-1 | 1∶4 | 1∶40 000 | 50 µL |
最佳反应条件 Optimal reaction conditions | 4 ℃ 10 h | 37 ℃ 30 min | 37 ℃ 30 min | 37 ℃ 12 min |
), ArticleFig(id=1307281727597077203, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Table 2, caption=
Comparison of sensitivity in CSFV antibody detection methods
, figureFileSmall=null, figureFileBig=null, tableContent=
检测方法 Detection method | 中和效价 Neutralization titer |
|---|
| 1∶512 | 1∶128 | 1∶32 | 1∶16 | 1∶10 |
|---|
双抗原夹心ELISA Double-antigen sandwich ELISA | + | + | + | + | + |
IDEXX猪瘟抗体检测试剂盒 The IDEXX CSFV antibody test kit | + | + | + | + | - |
), ArticleFig(id=1307281727672574676, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=表2, caption=
CSFV抗体检测方法敏感性比较
, figureFileSmall=null, figureFileBig=null, tableContent=
检测方法 Detection method | 中和效价 Neutralization titer |
|---|
| 1∶512 | 1∶128 | 1∶32 | 1∶16 | 1∶10 |
|---|
双抗原夹心ELISA Double-antigen sandwich ELISA | + | + | + | + | + |
IDEXX猪瘟抗体检测试剂盒 The IDEXX CSFV antibody test kit | + | + | + | + | - |
), ArticleFig(id=1307281727852929749, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Table 3, caption=
ELISA repeatability test results
, figureFileSmall=null, figureFileBig=null, tableContent=
血清 Serum | 批内重复性 Intra batch repeatability | 批间重复性 Inter batch repeatability |
|---|
| 平均数x | 变异系数/% CV | 平均数x | 变异系数/% CV |
|---|
阳性血清(n=7) Positive samples | 2.87 | 2.88 | 2.86 | 2.39 |
| 1.88 | 4.03 | 1.91 | 3.48 |
| 1.08 | 2.72 | 1.07 | 3.15 |
| 0.43 | 3.63 | 0.45 | 2.42 |
| 0.41 | 2.93 | 0.39 | 5.58 |
| 0.34 | 1.39 | 0.31 | 4.97 |
| 0.23 | 3.58 | 0.22 | 4.73 |
阴性血清(n=3) Negative samples | 0.071 | 1.72 | 0.07 | 2.32 |
| 0.103 | 3.43 | 0.11 | 6.95 |
| 0.12 | 3.58 | 0.12 | 4.93 |
), ArticleFig(id=1307281727915844310, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=表3, caption=
ELISA重复性检测结果
, figureFileSmall=null, figureFileBig=null, tableContent=
血清 Serum | 批内重复性 Intra batch repeatability | 批间重复性 Inter batch repeatability |
|---|
| 平均数x | 变异系数/% CV | 平均数x | 变异系数/% CV |
|---|
阳性血清(n=7) Positive samples | 2.87 | 2.88 | 2.86 | 2.39 |
| 1.88 | 4.03 | 1.91 | 3.48 |
| 1.08 | 2.72 | 1.07 | 3.15 |
| 0.43 | 3.63 | 0.45 | 2.42 |
| 0.41 | 2.93 | 0.39 | 5.58 |
| 0.34 | 1.39 | 0.31 | 4.97 |
| 0.23 | 3.58 | 0.22 | 4.73 |
阴性血清(n=3) Negative samples | 0.071 | 1.72 | 0.07 | 2.32 |
| 0.103 | 3.43 | 0.11 | 6.95 |
| 0.12 | 3.58 | 0.12 | 4.93 |
), ArticleFig(id=1307281729622926039, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=EN, label=Table 4, caption=
Comparative results of ELISA and IDEXX kits
, figureFileSmall=null, figureFileBig=null, tableContent=
方法 Method | 双抗原夹心ELISA Double-antigen sandwich ELISA | 总计 Total |
|---|
| 阳性 Positive | 阴性 Negative |
|---|
IDEXX猪瘟抗体检测试剂盒 The IDEXX CSFV antibody test kit | 阳性 Positive | 64 | 3 | 67 |
| 阴性 Negative | 3 | 138 | 141 |
总计 Total | | 67 | 141 | 208 |
), ArticleFig(id=1307281729983636184, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013461842612961, language=CN, label=表4, caption=
ELISA与IDEXX试剂盒比对结果
, figureFileSmall=null, figureFileBig=null, tableContent=
方法 Method | 双抗原夹心ELISA Double-antigen sandwich ELISA | 总计 Total |
|---|
| 阳性 Positive | 阴性 Negative |
|---|
IDEXX猪瘟抗体检测试剂盒 The IDEXX CSFV antibody test kit | 阳性 Positive | 64 | 3 | 67 |
| 阴性 Negative | 3 | 138 | 141 |
总计 Total | | 67 | 141 | 208 |
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