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小鼠ＳＰ２／０骨髓瘤细胞和用产气荚膜梭菌ε类毒素免疫ＢＡＬＢ／Ｃ鼠的脾细胞，以ＰＥＧ为融合剂进行融合，获得分泌抗产气荚膜梭菌ε毒素单克隆抗体的杂交瘤细胞株１３株，经鉴定，杂交瘤所分泌的单克隆抗体在ＥＬＩＳＡ中均特异地与产气荚膜梭菌ε毒素反应，而不与α和β毒素反应，１３株单克隆抗体均为ＩｇＧ１亚类，经毒素抗毒素中和试验测定，１３株单克隆抗体中，１２株具有中和ε毒素的活性。 相似文献
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抗A型产气荚膜梭菌α毒素单克隆抗体杂交瘤细胞系的建立与中和效应 总被引：2，自引：0，他引：2
用提取的 Ａ 型产气荚膜梭菌 α毒素包涵体免疫 Ｂ Ａ Ｌ Ｂ／ｃ 小鼠后， 取小鼠脾细胞与 Ｓ Ｐ２／０ 骨髓瘤细胞进行融合和克隆化，经间接 Ｅ Ｌ Ｉ Ｓ Ａ 筛选，共获得 １ Ａ８、１ Ｃ３、１ Ｄ５、１ Ｄ８、１ Ｆ１、１ Ｈ１ 和 ２ Ｅ３ ７ 株稳定分泌单克隆抗体（ Ｍ ｃ Ａｂ）的杂交瘤细胞株。经鉴定，７ 株 Ｍ ｃ Ａｂ 的 Ｉｇ 亚类有 Ｉｇ Ｇ１（１ Ｄ８）、 Ｉｇ Ｇ３（１ Ａ８、１ Ｃ３ 和 ２ Ｅ３）和 Ｉｇ Ｍ（１ Ｄ５、１ Ｆ１ 和 １ Ｈ１）。细胞培养上清和腹水抗体效价分别为 １∶５１２～１∶１ ０２４ 和 １∶１０６ ～１∶１０８ 。尤为重要的是，２ Ｅ３ 杂交瘤细胞株分泌的 Ｍ ｃ Ａｂ 不仅能够中和 α毒素的磷脂酶 Ｃ活性和溶血活性，而且能够对致死性腹腔感染小鼠产生良好的被动保护作用。 相似文献
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以提纯鸡ＩｇＧ做抗原免疫Ｂａｌｌ／ｃ小鼠，取鼠细胞在ＰＥＧ１０００作用下与小鼠骨髓细胞（Ｓｐ２／ｏＡｇ１４）融合，采用间接免疫荧光（ＩＦＡ）和酶联免疫吸附试验（ＥＬＩＳＡ）检测上清抗体，阳性孔经有限稀法进行细胞克隆，共获得了７株分泌抗鸡ＩｇＧ单克隆抗体的杂交瘤细胞（２Ｈ８、４Ｄ８、４Ｄ８、１Ｂ７、２Ａ７、２Ｂ３、１Ｇ１２、３Ｄ１２）将这些细胞分别接种间系小鼠制备出腹水抗体，ＥＬＩＳＡ效价可达１０＾ 相似文献
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禽多杀性巴氏杆菌单克隆抗体的制备及其基本性状研究 总被引：6，自引：2，他引：4
将多杀性巴氏杆菌（Ｐ．ｍ．）Ｃ４８－１株（Ｈｅｄｄｌｅｓｔｏｎ１型；Ｃａｒｔｅｒ分型５：Ａ）灭活后全菌免疫的ＢＡＬＢ／Ｃ小鼠脾细胞与ＳＰ／０骨髓瘤细胞在ＰＥＧ１０００作用下融合。用全菌包被的间接ＥＬＩＳＡ方法检测抗体，获得了２３株能稳定分泌抗Ｐ．ｍ．１型单克隆抗体的杂交瘤细胞。杂交瘤细胞培养２个月和冻存３个月后复苏培养，均能稳定分泌特异性单克隆抗体。２３株腹水ＥＬＩＳＡ效价分别从１０－３—１０－１１，无免疫沉淀性，也无凝集性。Ｉｇ类型鉴定表明，３株属于ＩｇＭ，２０株属于ＩｇＧ。间接ＥＬＩＳＡ检测结果表明：２３株单抗只与Ｐ．ｍ．１型起反应，而不与Ｐ．ｍ．３、４、１６型起反应，也不与禽类易感的鸡白痢沙门氏菌、大肠杆菌、葡萄球菌、李氏杆菌起反应，具有型的特异性。用ＩＣ８Ｈ９腹水建立的夹心ＥＬＩＳＡ方法检定Ｐ．ｍ．１型菌株，其敏感性高，特异性强，也更为方便。 相似文献
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抗牛病毒性腹泻／粘膜病病毒单克隆抗体的抗原结合位点分析 总被引：5，自引：0，他引：5
用ＥＬＩＳＡ测定了８株抗牛病毒性腹泻／粘膜病病毒（ＢＶＤ／ＭＤＶ）单克隆抗体（ＭｃＡｂ）的抗原结合位点，通过ＥＬＩＳＡ相加试验证实，８株单克隆抗体识别的抗原位点大多数比较接近，其中５Ａ５与５Ｃ２，５Ａ９与５Ｆ１１，以及５Ｄ７、５Ｃ９、２Ｇ３、４Ｅ６四株所识别的抗原位点相同或非常接近。 相似文献
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用ＥＬＩＳＡ测定了８株抗牛病毒性腹泻／粘膜病病毒（ＢＶＤ／ＭＤＶ）单克隆抗体（ＭｃＡｂ）的抗原结合位点，通过ＥＬＩＳＡ相加试验证实，８株单克隆抗体识别的抗原位点大多数比较接近，其中５Ａ５与５Ｃ２，５Ａ９与５Ｆ１１，以及５Ｄ７、５Ｃ９、２Ｇ３、４Ｅ６四株所识别的抗原位点相同或非常接近。 相似文献
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抗鸽IgG单克隆抗体的制备及鉴定 总被引：1，自引：0，他引：1
鸽卵黄经硫酸铵盐析、酒精沉淀及凝胶（Ｓｅｐｈａｄｅｘ Ｇ－１００）柱层析后,得到较纯的鸽ＩｇＧ,以其免疫ＢＡＬ Ｂ／Ｃ小鼠,取其脾细胞与骨髓瘤细胞（ＳＰ２／０）进行细胞融合,经过酶联免疫吸附试验（ＥＬＩＳＡ）筛选,得到两株能稳定分泌抗鸽ＩｇＧ的单克隆抗体（以下称单抗）,分别命名为１Ｅ５和４Ｃ２。经亚类鉴定,该类抗均为ＩｇＧ１亚类。在鸽ＩｇＧ包被的９６孔板上用间接用ＥＬＩＳＡ方法测定单抗腹水的ＥＬＩ 相似文献
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具有中和活性的减蛋综合征病毒单抗的研制 总被引：1，自引：0，他引：1
用减蛋综合征病毒毒株ＷＰＤＶ２０５纯化抗原免疫ＢＡＬＢ／ｃ小鼠，在最后一次免疫后第３天取脾细胞与ＳＰ２／０细胞在ＰＥＧ－４０００的作用下融合。用间接ＥＬＩＳＡ初步筛选出阳性克隆１０株（４Ｂ１、１Ｄ４、２Ｄ６、３Ｄ６、３Ａ５、２Ａ１、３Ｃ６、３Ｃ１、１Ｂ３和２Ｃ５）。这些杂交瘤细胞经克隆化和再次检测后生产腹水，用微量细胞中和试验筛选出具有中和活性的单克抗隆体４株（４Ｂ１、３Ｃ１、３Ｃ６和２Ｃ５），其 相似文献
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马立克氏病病毒囊膜糖蛋白B抗原Ⅰ型特异性和群共同性决定簇的单克隆抗体 总被引：3，自引：1，他引：2
用能表达马立克氏病病毒（ＭＤＶ）糖蛋白Ｂ（ｇＢ）的重组杆状病毒感染的Ｓｆ９细胞免疫小鼠，制备针对ＭＤＶｇＢ的单克隆抗体。以Ⅰ型马立克氏病病毒ＧＡ株感染的鸡胚成纤维细胞作为检测抗原，同时以免疫荧光试验（ＩＦＡ）和酶联免疫吸附试验（ＥＬＩＳＡ）来筛选杂交瘤细胞，结果获得了ＩＦＡ和ＥＬＩＳＡ均为阳性的２株单克隆抗体细胞株，定名为ＢＡ４和ＢＤ８。在ＩＦＡ和免疫沉淀试验中，单抗ＢＤ８与Ⅰ、Ⅱ、Ⅲ型ＭＤＶ均呈阳性反应；单抗ＢＡ４只对Ⅰ型ＭＤＶ（包括ＣＶＩ９８８疫苗株）呈阳性反应。免疫沉淀反应进一步确证２株单抗识别的是ＭＤＶ糖蛋白Ｂ抗原。 相似文献
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Fifteen monoclonal antibodies (MAbs) against an avian group A rotavirus were cloned and characterized. Eight of the 15 MAbs had neutralizing activity (N-MAbs). Five of the N-MAbs (1G1, 5B8, 4E2, 3G1, 2E3) were VP4-specific by radioimmunoprecipitation assay (RIPA), and two N-MAbs (2D11, 6E8) were possibly VP7-specific (faint bands by RIPA). One N-MAb (4H12) of undefined protein specificity cross-reacted with serotype 3 simian rotaviruses. The other seven N-MAbs did not cross-react with any of the eight distinct serotypes of human and mammalian rotaviruses tested. Of the seven non-neutralizing MAbs, three were VP6-specific (3H10, 4B12, 5F6), two were VP8-specific (6C9, 1D1), one was VP4-specific (4E9), and one was of undefined protein specificity (1B11). Four non-neutralizing MAbs recognized only avian group A rotavirus in cell-culture immunofluorescence tests (6C9, 1D1, 4E9 and 5F6), whereas two MAbs (3H10 and 4B12) cross-reacted with all human and animal rotaviruses tested. The MAb 1B11 did not recognize any human rotavirus serotypes but cross-reacted with all nonhuman animal rotavirus serotypes. The MAbs produced in this study should be useful for the detection and further characterization of avian group A rotaviruses. 相似文献
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为研制犬副流感特异性诊断试剂,我们以犬副流感病毒(CPIV)免疫8周龄BALB/c小鼠,采用淋巴细胞杂交瘤技术获得4株稳定分泌针对CPIV的单克隆抗体(MAb)细胞株,分别命名为4F386、584C9、4G7F4和4C9D8.4株MAb腹水针对CPIV的间接ELISA抗体效价达1:10~5～1:10~6,与犬瘟热病毒(CDV)和犬细小病毒(CPV)均不发生交叉反应.MAb 4F386和4C9D8为IgG,5B4C9和4G7F4为IgM.Western blot检测表明,4F386与CPIV的F蛋白发生特异性反应,4G7F4与CPW的HN蛋白发生特异性反应,而584C9和4C9D8不与变性的CPIV蛋白发生反应.4株MAb均具有中和病毒活性,间接免疫荧光检测均呈为阳性.本研究为进一步研制CPIV特异性诊断和治疗制剂创造了条件. 相似文献
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自2016年以来,鹅星状病毒(GoAstV)已成为当前危害鹅养殖业生产的重要病原体之一,雏鹅均易感,主要引起9～19日龄雏鹅死亡,以雏鹅腿关节肿胀及肾脏尿酸盐沉积导致肾炎为主要病征.建立相应的病原学与血清学检测方法对于防控该病至关重要.为建立基于病毒Cap蛋白的诊断技术,本研究构建了鹅星状病毒去核定位信号肽的Cap基因... 相似文献
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为建立掺糖造假蜂蜜中残留糖化酶的检测方法,用从黑曲霉中提取的糖化酶作为免疫原,免疫BALB/c小鼠,利用杂交瘤技术获得了12株稳定分泌针对糖化酶抗体的杂交瘤细胞株。单克隆抗体亚型鉴定结果显示,10株为IgG1,2株为IgG2b,轻链均为κ轻链。Western blotting分析结果表明,12株抗体均可特异性结合糖化酶。其中6株单抗(McAb-2H4F9、6H9D8、8F2F11、8F2E9、1A8G6、1C4D5)细胞株采用体内诱生法制备的腹水效价均1∶1×104以上。采用抗体叠加试验对这6株抗糖化酶单抗的抗原识别位点进行检测,反应增殖结果表明,6株单抗分别针对4类不同抗原位点,McAb-6H9D8和McAb-8F2F11针对第Ⅰ种抗原决定簇;McAb-1A8G6和McAb-1C4D5针对第Ⅱ种抗原决定簇;McAb-8F2E9针对第Ⅲ种抗原决定簇;McAb-2H4F9针对第Ⅳ种抗原决定簇。制备的抗体针对不同的抗原表位,为双抗夹心ELISA方法的建立提供前提。 相似文献
15.
Olivier Martel-Paradis Marc-André Laurin Vito Martella Jagdip Singh Sohal Yvan L’Homme 《Veterinary microbiology》2013
Group A rotaviruses with G2 and G9 VP7 specificity are common in humans, while G11 strains have been detected only sporadically. G2, G9 and G11 rotaviruses also circulate in pigs and swine rotaviruses have been suspected of interspecies and zoonotic transmissions in numerous studies. However, the complete gene constellation of G2 and G9 porcine rotaviruses has not yet been determined. In order to start filling this gap, the genomic make up of two G2, one G9 and one G11 porcine rotavirus strains, detected in Canada in 2005–2007, was determined. With the exception of a G2P[34] strain, with E9 NSP4 type and mixed I5 + I14 VP6 type, the constellation of genomic segments was rather conserved and were closely related to prototype porcine strains in the four viruses characterized (I5-R1-C1-M1-A8-N1-T7-E1-H1). Most notably, all the viruses displayed a rare NSP3 genotype, T7, which has also been identified in rare human reassortant strains and in the reference strain RVA/Cow-tc/GBR/UK/1973/G6P[5]. This study provides crucial genetic data on these complex viruses and will help understand the origin and ecological niche of gene segments and the role played by pigs in their evolution. 相似文献
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An adjuvanted vaccine containing inactivated equine influenza, herpesvirus antigens, and tetanus toxoid was administered to young seronegative foals of 8 months of age by deep intramuscular injection in the neck (Group A). The first two vaccinations were given 4 weeks apart. The third was administered 6 months later. Another group of foals (Group B) was vaccinated according to the same scheme at the same time with monovalent equine herpes virus (EHV) vaccine (EHV1.4) vaccine. Antibody responses to the equine influenza (single radial haemolysis; SRH) and tetanus (ToBi ELISA) components of the vaccines were examined from first vaccination until 1 year after the third vaccination. The influenza components of the combination vaccine induced high antibody titres at two weeks after the second vaccination whereafter titres declined until the time of the third vaccination. After the third vaccination, the titres rose rapidly again to remain high for at least 1 year. Antibody titres against tetanus peaked only after the third vaccination but remained high enough to offer protective immunity for at least 1 year. Foals vaccinated with monovalent EHV1.4 remained seronegative for influenza and tetanus throughout the study. Four and a half months after the third vaccination of groups A and B, a third group of animals was vaccinated twice with monovalent EHV1.4 vaccine 4 weeks apart (Group C). Two weeks after the administration of the second dose in the later group, all groups (A, B, C and an unvaccinated control group D) were challenged with EHV-4. Vaccinated foals (Group A, B, C) showed a clear reduction of clinical symptoms and virus excretion after EHV-4 challenge compared with the unvaccinated control foals. No difference could be demonstrated among the vaccinated groups, suggesting that the combination vaccine protects as well as the monovalent vaccine. In EHV1.4-vaccinated foals both antigenic fractions induced clear protection up to 6 months after vaccination (9). It can therefore be anticipated that the efficacy of the combination vaccine against EHV-1 challenge is similar to the efficacy against EHV-1 induced by EHV1.4 vaccination. 相似文献
17.
P Cowen S Li J S Guy G A Erickson D Blanchard 《American journal of veterinary research》1990,51(3):354-358
Pseudorabies virus (PRV) was isolated from 9 of 44 PRV-vaccinated seropositive sows on 5 of 11 farms. Although serum-neutralization antibody titers were 1:16 to 1:256, 28 virus isolates were obtained from tonsil, nasal, or buccal swab samples from 9 sows given 2 ml of dexamethasone/kg of body weight IM for 5 days. Pseudorabies virus was isolated from 6 of 20 sows (3 of 5 farms) given a killed-virus vaccination. Virus was obtained from 3 of 24 sows (2 of 6 farms) given modified-live virus and killed-virus vaccination. Evaluation of the 9 PRV with 5 restriction endonucleases revealed 4 PRV existing genotypes. The 9 isolated types of PRV appeared to be indistinguishable by Kpn I and BamHI restriction endonuclease analysis; however, when analyzed with Sal I, HinfI, and Pst I, isolates 7 (farm D), 8 (farm C), and 9 (farm B) had numerous differences. Isolates 1, 2, 3, and 4 (farm F) and 5 and 6 (farm G) appeared to be the same genotype when further analyzed with Pst I, HinfI, and Sal I. 相似文献
18.
为明确生产用培养基对猪丹毒杆菌G4T10株安全性及免疫原性影响,采用2种不同批次的肉肝胃膜消化汤（20120123批和130226批）及马丁琼脂（20120904批和130129批）进行猪丹毒杆菌G4T10株培养和选菌,然后进行安全及免疫原性试验。结果共筛选出4种不同优势菌落,其中一株的菌落（20120123批肉肝胃膜消化汤＋20120904批马丁琼脂）形态最好,具有良好的安全性及免疫原性（小鼠全试验9／10存活,其免疫后攻毒达9／9保护）;而有一株菌落（20120123批肉肝胃膜消化汤十130129批马丁琼脂）形态最差,其安全性及免疫原性试验结果差（小鼠安全试验仅6／10存活,其免疫后攻毒仅达2／5保护）。试验表明,不同批次生产用培养基对猪丹毒活疫苗（G4T10株）质量影响大。 相似文献
19.
R A Simkins P A Weilnau J Bias L J Saif 《American journal of veterinary research》1992,53(7):1253-1258
Five nonneutralizing monoclonal antibodies (MAb) generated to the virulent Miller strain of transmissible gastroenteritis virus (TGEV) and specific for the S protein were characterized. Competition assays between purified and biotinylated MAb indicated that MAb 75B10 and 8G11 mapped near a new subsite, designated V and 2 MAb, 44C11 and 45A8, mapped to a previously designated subsite D. A fifth MAb mapped between subsites V and E. These MAb were tested with 3 previously characterized MAb to subsites A, E, and F in fixed-cell ELISA and cell culture immunofluorescent assays against 5 reference and 9 field strains of TGEV and 2 US strains (ISU-1 and ISU-3) of porcine respiratory coronavirus (PRCV). Subsites A, E, and F were conserved on all TGEV and PRCV strains examined. The 2 MAb to subsite V, 8G11 and 75B10, reacted only with the Miller TGEV strains (M5C, M6, and M60), except that 75B10 also recognized field strain U328. The MAb 11H8 did not react with 4 field strains or the Purdue strains of TGEV. The 2 MAb to subsite D reacted with all TGEV strains examined, but not with 2 US PRCV strains, 2 European PRCV strains, 1 feline infectious peritonitis virus strain, and 1 canine coronavirus strain. Because of this specificity for TGEV, but not PRCV, these latter 2 subsite D MAb may be useful for the development of competition ELISA to differentiate serologically between TGEV and PRCV infections in swine, similar to the currently used European subsite D MAb. 相似文献
20.
Molecular characterization of unusual bovine rotavirus A strains having high genetic relatedness with human rotavirus: evidence for zooanthroponotic transmission 
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下载免费PDF全文 N. Kumar Y. S. Malik K. Sharma K. Dhama S. Ghosh K. Bányai N. Kobayashi R. K. Singh 《Zoonoses and public health》2018,65(4):431-442
We report here the genomic characterization of two rare rotavirus A (RVAs) G1P[11] and G9P[X] strains detected in cattle calves from two different geographical locations in India during routine rotavirus surveillance. These strains possessed unusual G types (VP7 gene) on a bovine/artiodactyl genotype constellation, G1‐P[11]‐I2‐Rx‐Cx‐Mx‐Ax‐N2‐T6‐E2‐H3 (HR‐B91) and G9‐P[X]‐I2‐Rx‐Cx‐Mx‐Ax‐N2‐T6‐E2‐H3 (WB‐H2). This is the first report on molecular characterization of G9 in cattle, and second report on G1 in cattle. The VP7 gene of HR‐B91 occupied lineage IIc within G1 while that of WB‐H2 occupied IIIb within G9 genotype. The latter was found to be very diverse from other RVA strains of G9 genotype, and this may emerge as a new genotype in due course. The study provides evidence of zooanthroponotic transmission of human G1 and G9 RVA genes to calves. Of note, the G9 genotype was found to serve as the ancestral genotype for G1. Phylogenetic analysis of remaining gene segments revealed close relatedness to artiodactyl or artiodactyl‐like human RVA strains. The findings of this study highlight the potential role of interspecies transmission and reassortment events in generating the rare rotavirus strains. 相似文献