https://www.scienceopen.com/hosted-document?doi=10.15212/ZOONOSES-2024-0023
Announcing a new article publication for
Zoonoses journal. Staphylococcal enterotoxin B (SEB), an exotoxin produced by single- or multi-drug-resistant
Staphylococcus aureus (
S. aureus), can induce food poisoning and toxic shock syndrome. Because no treatment is available for SEB-poisoned patients, development of a safe and effective SEB antidote is urgently needed.
First, SEB was prepared, and native SEB (nSEB) was used to construct lethal mouse and rhesus monkey models. Second, F(ab′)
2 fragments of IgG antibodies were cleaved with pepsin from horses inoculated with Freund’s adjuvant-purified nSEB. Finally, protective efficacy was evaluated in mouse and rhesus monkey models of lethal SEB intoxication.
In mouse and monkey model studies, the purity of the prepared nSEB reached 90%, and that of the F(ab′)
2 fragments reached 83.09%. In mice and rhesus monkeys, the median lethal dose (LD
50) of staphylococcal enterotoxin B (SEB) was 21.87 μg/kg and 23.77 μg/kg, respectively. Additionally, administration of 6.25 mg/kg and 7.125 mg/kg of F(ab′)
2 fragments, respectively, effectively prevented SEB-induced lethality. Finally, single-cell sequencing of peripheral blood immune cells was used to detect the effects of the therapeutic antibody on peripheral blood immune cells. The underlying mechanism was found to involve inhibition of neutrophil activation, proliferation, and differentiation.
Purified F(ab′)
2 fragments were an effective antidote to lethal SEB doses in mice and rhesus monkeys, and therefore might be a favorable candidate for treating patients with severe SEB intoxication.
# # # # # #
Zoonoses is fully open access journal for research scientists, physicians, veterinarians, and public health professionals working on diverse disciplinaries of zoonotic diseases. Please visit
https://zoonoses-journal.org/ to learn more about the journal.
Zoonoses is now open for submissions; articles can be submitted online at
https://mc04.manuscriptcentral.com/zoonoses
There are no author submission or article processing fees.
Editorial Board: https://zoonoses-journal.org/index.php/editorial-board/
Zoonoses is available on
ScienceOpen (
https://www.scienceopen.com/search#collection/839df240-327f-47dd-b636-9b728dff9700).
Follow
Zoonoses on Twitter
@ZoonosesJ;
Facebook (
https://www.facebook.com/Zoonoses-Journal-100462755574114 ) and
LinkedIn (
https://www.linkedin.com/company/zoonoses/)
eISSN 2737-7474
ISSN 2737-7466
# # # # # #
Jing Liu, Bochang Shi and Jin Li et al. Purified Immunoglobulin F(ab′)2 Prevents Lethal Staphylococcal Enterotoxin B Intoxication in Mice and Rhesus Monkeys.
Zoonoses. 2025. Vol. 5(1). DOI: 10.15212/ZOONOSES-2024-0023