畜牧兽医学报 ›› 2021, Vol. 52 ›› Issue (12): 3578-3587.doi: 10.11843/j.issn.0366-6964.2021.012.024

• 预防兽医 • 上一篇    下一篇

猪脾转移因子提高LaSota株鸡新城疫弱毒疫苗的免疫保护率

徐磊1, 钟佳莲1, 余勋信1, 刘毅发1, 黄瑜2,3*, 刘小龙4, 赖隆永4, 闫丽萍5, 许秀梅6, 宋素泉5*, 张渊魁6*   

  1. 1. 福建农业职业技术学院, 福州 350119;
    2. 福建省禽病防治重点实验室, 福州 350013;
    3. 福建省农业科学院畜牧兽医研究所, 福州 350013;
    4. 派生特(福州)生物科技有限公司, 福州 350500;
    5. 南京农业大学动物医学院, 南京 210095;
    6. 兆丰华生物科技(南京)有限公司, 南京 211102
  • 收稿日期:2021-03-22 出版日期:2021-12-25 发布日期:2021-12-22
  • 通讯作者: 黄瑜,主要从事畜禽传染病研究,E-mail:huangyu_815@163.com;宋素泉,主要从事畜禽传染病研究,E-mail:suquan.song@njau.edu.cn;张渊魁,主要从事畜禽传染病研究,E-mail:Zhang.yuankui@qq.com
  • 作者简介:徐磊(1984-),男,江西赣州人,副教授,主要从事畜禽传染病研究,E-mail:xulei0328@163.com
  • 基金资助:
    福建省第七批引才“百人计划”;福建省科技计划项目(2019N0025);江苏省博士后科研资助计划(2019K072);福建省高层次人才和青年优秀人才访学研修资助计划(闽人社文〔2019〕239号);福州市科技计划项目(2020-PT-149);福建省畜禽疫病防控技术重大研发平台项目(2014N2003);福建省禽病防治重点实验室开放基金课题(KF201902);福建省职业院校专业带头人培养计划(闽教办师〔2019〕40号);福建省科技计划项目(2021S2003)

Improvement of the Immune Protection Rate on Newcastle Disease Virus Attenuated Vaccine LaSota Strain by Pig Spleen Transfer Factor

XU Lei1, ZHONG Jialian1, YU Xunxin1, LIU Yifa1, HUANG Yu2,3*, LIU Xiaolong4, LAI Longyong4, YAN Liping5, XU Xiumei6, SONG Suquan5*, ZHANG Yuankui6*   

  1. 1. Fujian Agricultural Vocational Technical College, Fuzhou 350119, China;
    2. Fujian Provincial Key Laboratory for Avian Diseases Control and Prevention, Fuzhou 350013, China;
    3. Institute of Animal Husbandry and Veterinary Medicine, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;
    4. Present (Fuzhou) Biotech Company Limited, Fuzhou 350500, China;
    5. College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China;
    6. Zhaofenghua Biotechnology (Nanjing) Co., Ltd., Nanjing 211102, China
  • Received:2021-03-22 Online:2021-12-25 Published:2021-12-22

摘要: 旨在了解猪脾转移因子(TF)对新城疫病毒(NDV)弱毒疫苗LaSota株的免疫增强效果及机制。本研究分别采用不同剂量(10-2、10-3、10-4、10-5羽份) LaSota疫苗株单独(单独免疫组)、LaSota疫苗株与TF联合(联合免疫组)免疫SPF鸡,14 d后以NDV F48E9强毒攻毒,同时设立对照组(非免疫攻毒)和空白组(非免疫非攻毒),并采用ELISA方法与蛋白质芯片技术分别测定外周血IL-4、IFN-γ与IL-12 P40浓度。结果显示,鸡免疫10-2、10-3、10-4、10-5羽份时疫苗攻毒保护率和半数保护量(PD50)如下:单独免疫组分别为100%、55%、0%、0%和0.000 8羽份,联合免疫组分别为100%、75%、0%、0%和0.000 5羽份,对照组和空白组死亡率分别为100%和0%。免疫10-3羽份疫苗后,联合免疫组IL-4和IFN-γ含量均高于其他组,并于第7、14天差异极显著(P<0.01);攻毒后,联合免疫组IL-4、IFN-γ和IL-12 P40含量均高于其他组,IL-4于第1、14天,IFN-γ于第1、3天,IL-12 P40于第1天差异极显著(P<0.01)。综上表明,TF可增强IFN-γ、IL-12介导的细胞免疫和IL-4介导的体液免疫,提高LaSota株弱毒疫苗的免疫保护率,降低疫苗PD50;在抵抗NDV F48E9强毒攻击时,联合免疫组的免疫保护率明显高于单独免疫组。

关键词: 猪脾转移因子, 鸡新城疫弱毒LaSota株, 鸡新城疫强毒F48E9株, 免疫保护率, 细胞因子

Abstract: This study was conducted to evaluate the immune enhancement effect and mechanism of pig spleen transfer factor(TF) on Newcastle disease virus(NDV) attenuated vaccine LaSota strain. Specific pathogen free(SPF) chickens were inoculated with different doses(10-2, 10-3,10-4, 10-5) of NDV strain LaSota(vaccination group without TF), NDV strain LaSota combined with TF(vaccination group with TF), respectively, and challenged with virulent NDV strain F48E9 on 14 days post vaccination(dpv). The control group(non-immunized but challenged) and blank group(non-immunized and non-challenged) were set up simultaneously. In addition, the change of IL-4, IFN-γ and IL-12 P40 in peripheral blood were analyzed by ELISA and protein chip technology. The protection rate of different doses and median protective dose(PD50) were 100%, 55%, 0%, 0%, 0.000 8 doses in the plume in vaccination group without TF, respectively, and 100%, 75%, 0%, 0%, 0.000 5 doses in the plume in vaccination group with TF. In contrast, the mortality of control group and blank group were 100% and 0%. After immunization with 10-3 dose of vaccine, the levels of IL-4 and IFN-γ in vaccination group with TF were higher than in other groups and the difference was extremely significant on 7 and 14 dpv(P<0.01). After challenge, the levels of IL-4, IFN-γ and IL-12 P40 in vaccination group with TF were higher than in other groups. The differences of IL-4 on 1 and 14 days post challenge (dpc), IFN-γ on 1 and 3 dpc, IL-12 P40 on 1 dpc were extremely significant(P<0.01). These findings indicated that TF could reinforce cellular immunity by IFN-γ, IL-12 and humoral immunity by IL-4, improve the immune protection rate of NDV attenuated vaccine LaSota strain and reduce the PD50. Vaccination group with TF was more effective than vaccination group without TF against virulent NDV strain F48E9.

Key words: pig spleen transfer factor, attenuated chicken NDV strain LaSota, virulent chicken NDV strain F48E9, immune protection rate, cytokine

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