Refinement and Neutralization Evaluation of the F(ab') Type of Antivenom Against the Deadly Jellyfish Toxins

Overview

Journal Int J Mol Sci

Publisher MDPI

Specialties Biochemistry
Chemistry
Molecular Biology

Date 2021 Dec 10

PMID 34884477

Citations 5

Authors

Rongfeng Li

Huahua Yu

Aoyu Li

Chunlin Yu

Pengcheng Li

Affiliations

Soon will be listed here.

Abstract

Jellyfish stings threaten people's health and even life in coastal areas worldwide. is one of the most dangerous jellyfish in the East Asian Marginal Seas, which not only stings hundreds of thousands of people every year but also is assumed to be responsible for most deaths by jellyfish stings in China. However, there is no effective first-aid drug, such as antivenoms, for the treatment of severe stings by to date. In this study, we prepared a antiserum from rabbits using inactivated toxins (NnTXs) and isolated the IgG type of antivenom (IgG-AntiNnTXs) from the antiserum. Subsequently, IgG-AntiNnTXs were refined with multiple optimizations to remove Fc fragments. Finally, the F(ab') type of antivenom (F(ab')-AntiNnTXs) was purified using Superdex 200 and protein A columns. The neutralization efficacy of both types of antivenom was analyzed in vitro and in vivo, and the results showed that both IgG and F(ab') types of antivenom have some neutralization effect on the metalloproteinase activity of NnTXs in vitro and could also decrease the mortality of mice in the first 4 h after injection. This study provides some useful information for the development of an effective antivenom for stings in the future.

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