用源自伪结核棒状杆菌的rPTS、rRBN和rCP40重组蛋白对小鼠和山羊进行免疫接种。

Immunization of mice and goats with Corynebacterium pseudotuberculosis-derived rPTS, rRBN and rCP40 recombinant proteins.

作者信息

de Jesus Ioná Brito, Droppa-Almeida Daniela, Ferreira Caroline, Nascimento Roberto José Meyer, Portela Ricardo Wagner, de Oliveira Silva Mara Thais, Alves Mirna Samara Dié, Dos Santos Guilherme Senna, Azevedo Vasco, Padilha Francine Ferreira, Borsuk Sibele

机构信息

Laboratório de Biomateriais, Instituto de Tecnologia e Pesquisa, Universidade Tiradentes, Aracaju, Sergipe, Brasil.

Laboratório de Imunologia e Biologia Molecular, ICS-UFBA, Salvador, Bahia, Brasil.

出版信息

World J Microbiol Biotechnol. 2025 Jun 27;41(7):234. doi: 10.1007/s11274-025-04411-w.

Abstract

Caseous lymphadenitis (CLA) is a chronic disease that affects sheep and goats worldwide and causes significant economic losses, and the best strategy to reduce clinical cases is vaccination. This study evaluated the immune response and protection rates of the Corynebacterium pseudotuberculosis-derived ascorbate transporter subunit (rPTS) and Ribonuclease protein (rRBN) recombinant proteins in mice and goats. Groups of eight Swiss mice each were inoculated with rPTS + Al(OH) (G1), rPTS + Saponin (G2), rRBN + Al(OH) (G3), rRBN + Saponin (G4), rPTS + rRBN + rCP40 + Al(OH) (G5), rPTS + rRBN + rCP40 + Saponin (G6), Control Al(OH) (G7) and Control Saponin (G8), respectively. The mice received two vaccine doses and were challenged with a virulent C. pseudotuberculosis strain. In addition, five groups of eight goats each were inoculated with sterile saline (G1), rPTS (G2), rRBN (G3), rCP40 (G4), and rPTS + rRBN + CP40 (G5), associated with saponin. ELISAs was used to detect specific total IgG in mice and goats, and the goat specific IFN-γ production was quantified. All immunized mice presented a peak of specific total IgG on day 60, and a higher survival rate (75%) was achieved in animals immunized with a pool of the recombinant proteins associated with saponin. Also, goats immunized with the same formulation produced significant levels of specific antibodies from day 15 post immunization and were able to significantly produce specific IFN-γ at 90 days post-immunization. Our findings suggest that the formulation containing the association of the proteins rPTS, rRBN and rCP40 associated to saponin adjuvant resulted in the best protection against the challenge in mice and was able to elicit an IFN-γ-characterized Th1 immune response in goats, and can be considered as a promising vaccine formulation for CLA.

摘要

干酪性淋巴结炎(CLA)是一种影响全球绵羊和山羊的慢性疾病,会造成重大经济损失,而减少临床病例的最佳策略是接种疫苗。本研究评估了源自伪结核棒状杆菌的抗坏血酸转运蛋白亚基(rPTS)和核糖核酸酶蛋白(rRBN)重组蛋白在小鼠和山羊中的免疫反应及保护率。将每组8只瑞士小鼠分别接种rPTS + 氢氧化铝(G1)、rPTS + 皂苷(G2)、rRBN + 氢氧化铝(G3)、rRBN + 皂苷(G4)、rPTS + rRBN + rCP40 + 氢氧化铝(G5)、rPTS + rRBN + rCP40 + 皂苷(G6)、对照氢氧化铝(G7)和对照皂苷(G8)。小鼠接受两剂疫苗接种,然后用强毒伪结核棒状杆菌菌株进行攻毒。此外,将每组8只山羊分别接种无菌生理盐水(G1)、rPTS(G2)、rRBN(G3)、rCP40(G4)以及与皂苷联合使用的rPTS + rRBN + CP40(G5)。采用酶联免疫吸附测定法(ELISA)检测小鼠和山羊中的特异性总IgG,并对山羊特异性γ干扰素的产生进行定量分析。所有免疫小鼠在第60天出现特异性总IgG峰值,用与皂苷联合的重组蛋白混合物免疫的动物获得了更高的存活率(75%)。同样,用相同制剂免疫的山羊在免疫后第15天产生了显著水平的特异性抗体,并在免疫后90天能够显著产生特异性γ干扰素。我们的研究结果表明,含有与皂苷佐剂联合的rPTS、rRBN和rCP40蛋白的制剂在小鼠中对攻毒产生了最佳保护作用,并且能够在山羊中引发以γ干扰素为特征的Th1免疫反应,可被视为一种有前景的CLA疫苗制剂。

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