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Derkaev AA, Ryabova EI, Esmagambetov IB, Shcheblyakov DV, Godakova SA, Vinogradova ID, Noskov AN, Logunov DY, Naroditsky BS, Gintsburg AL. rAAV expressing recombinant neutralizing antibody for the botulinum neurotoxin type A prophylaxis. Front Microbiol 2022; 13:960937. [PMID: 36238585 PMCID: PMC9551282 DOI: 10.3389/fmicb.2022.960937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 08/17/2022] [Indexed: 11/13/2022] Open
Abstract
Botulinum neurotoxin (BoNT) is one of the most dangerous bacterial toxins and a potential biological weapon component. BoNT mechanism of pathological action is based on inhibiting the release of neurotransmitters from nerve endings. To date, anti-BoNT therapy is reduced to the use of horse hyperimmune serum, which causes many side effects, as well as FDA-approved drug BabyBig which consists of human-derived anti-BoNT antibodies (IgG) for infant botulinum treatment. Therapeutics for botulism treatment based on safer monoclonal antibodies are undergoing clinical trials. In addition, agents have been developed for the specific prevention of botulism, but their effectiveness has not been proved. In this work, we have obtained a recombinant adeno-associated virus (rAAV-B11-Fc) expressing a single-domain antibody fused to the human IgG Fc-fragment (B11-Fc) and specific to botulinum toxin type A (BoNT/A). We have demonstrated that B11-Fc antibody, expressed via rAAV-B11-Fc treatment, can protect animals from lethal doses of botulinum toxin type A, starting from day 3 and at least 120 days after administration. Thus, our results showed that rAAV-B11-Fc can provide long-term expression of B11-Fc-neutralizing antibody in vivo and provide long-term protection against BoNT/A intoxication. Consequently, our study demonstrates the applicability of rAAV expressing protective antibodies for the prevention of intoxication caused by botulinum toxins.
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Godakova SA, Noskov AN, Vinogradova ID, Ugriumova GA, Solovyev AI, Esmagambetov IB, Tukhvatulin AI, Logunov DY, Naroditsky BS, Shcheblyakov DV, Gintsburg AL. Camelid VHHs Fused to Human Fc Fragments Provide Long Term Protection Against Botulinum Neurotoxin A in Mice. Toxins (Basel) 2019; 11:E464. [PMID: 31394847 PMCID: PMC6723419 DOI: 10.3390/toxins11080464] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 07/29/2019] [Accepted: 08/02/2019] [Indexed: 12/11/2022] Open
Abstract
The bacterium Clostridium botulinum is the causative agent of botulism-a severe intoxication caused by botulinum neurotoxin (BoNT) and characterized by damage to the nervous system. In an effort to develop novel C. botulinum immunotherapeutics, camelid single-domain antibodies (sdAbs, VHHs, or nanobodies) could be used due to their unique structure and characteristics. In this study, VHHs were produced using phage display technology. A total of 15 different monoclonal VHHs were selected based on their comlementarity-determining region 3 (CDR3) sequences. Different toxin lethal dose (LD50) challenges with each selected phage clone were conducted in vivo to check their neutralizing potency. We demonstrated that modification of neutralizing VHHs with a human immunoglobulin G (IgG)1 Fc (fragment crystallizable) fragment (fusionbody, VHH-Fc) significantly increased the circulation time in the blood (up to 14 days). At the same time, VHH-Fc showed the protective activity 1000 times higher than monomeric form when challenged with 5 LD50. Moreover, VHH-Fcs remained protective even 14 days after antibody administration. These results indicate that this VHH-Fc could be used as an effective long term antitoxin protection against botulinum type A.
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Affiliation(s)
- Svetlana A Godakova
- Department of Genetics and Bacteria Molecular Biology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
| | - Anatoly N Noskov
- Department of Bacteriology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
| | - Irina D Vinogradova
- Department of Bacteriology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
| | - Galina A Ugriumova
- Department of Bacteriology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
| | - Andrey I Solovyev
- Department of Bacteriology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
| | - Ilias B Esmagambetov
- Department of Genetics and Bacteria Molecular Biology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
| | - Amir I Tukhvatulin
- Department of Medical Microbiology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
| | - Denis Y Logunov
- Department of Medical Microbiology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
| | - Boris S Naroditsky
- Department of Genetics and Bacteria Molecular Biology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
| | - Dmitry V Shcheblyakov
- Department of Genetics and Bacteria Molecular Biology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia.
| | - Aleksandr L Gintsburg
- Department of Genetics and Bacteria Molecular Biology, Gamaleya Research Center of Epidemiology and Microbiology, 18 Gamaleya Street, Moscow 123098, Russia
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Godakova SA, Sevast'yanova GA, Semyenova SK. [STRUCTURE AND DISTRIBUTION OF THE RETROTRANSPOSON BOV-B LINE]. Mol Gen Mikrobiol Virusol 2016; 34:9-12. [PMID: 27183715 DOI: 10.3103/s0891416816010043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The classification of mobile elements was discussed. Special attention was devoted to the retroelement of the LINE group: retrotransposon Bov-B LINE. The history of its origin and distribution in the nature was considered. The results of the phenomenon of horizontal transition of the retrotransposon Bov-B LINE between evolutionally distant classes were discussed.
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Godakova SA, Korchagin VI, Semeynova SK, Chernyavskaya MM, Sevast'yanova GA, Ryskov AP. [Characterization of retrotransposon Bov-B LINE reverse transcriptase gene sequences in parthenogenetic lizards Darevskia unisexualis and bisexual species D. nairensis and D. valentini]. Mol Biol (Mosk) 2015; 49:417-421. [PMID: 26107894 DOI: 10.7868/s0026898415030052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 12/23/2014] [Indexed: 06/04/2023]
Abstract
Cloning and sequencing of the partial reverse transcriptase gene (750 bp) of the Bov-B LINE retrotransposon have been held in parthenogenetic lizards Darevskia unisexualis and its assumed parental bisexual species D. nairensis and D.valentini. It was shown that the percentage of transcriptionally active copies of this gene, which does not contain a stop codon, is almost the same in the three species and is about 75%. The intragenomic divergence level of these sequences is low and was found to be 2.6% in D. unisexualis, 1.9% in D. nairensis, and 1.6% in D. valentini. The phylogenetic analysis shows the distribution of copies of D. unisexualis in each of the two clusters of RT sequences characteristic of D. nairensis and D. valentini. This result supports the view of the hybrid origin of D. unisexualis and does not exclude intraspecific hybridization between D. nairensis and D. valentini.
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Affiliation(s)
- S A Godakova
- Institute of Gene Biology, Russian Academy of Sciences, Moscow, 119334 Russia
- Moscow State Pedagogical University, Moscow, 119991 Russia
| | - V I Korchagin
- Institute of Gene Biology, Russian Academy of Sciences, Moscow, 119334 Russia
| | - S K Semeynova
- Institute of Gene Biology, Russian Academy of Sciences, Moscow, 119334 Russia
| | - M M Chernyavskaya
- Institute of Gene Biology, Russian Academy of Sciences, Moscow, 119334 Russia
- Moscow State Pedagogical University, Moscow, 119991 Russia
| | | | - A P Ryskov
- Institute of Gene Biology, Russian Academy of Sciences, Moscow, 119334 Russia
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Korchagin VI, Vergun AA, Godakova SA, Tokarskaia ON. [Intra- and interspecific polymorphism of (AAT)n in microsatellite locus du47D in parthenogenetic species of the genus Darevskia]. Genetika 2013; 49:420-424. [PMID: 23755542 DOI: 10.7868/s0016675813030119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The molecular structure of the allelic variants of (AAT)n of the Du47D microsatellite locus was determined in parthenogenetic lizards Darevskia dahli, D. armeniaca, and D. rostombekovi. Comparative analysis of these alleles showed that they were characterized by perfect structure of microsatellite cluster, and were different in the number of (AAT) monomeric units, as well as in the combinations of species-specific substitutions and deletions in the microsatellite flanking regions. Molecular structure of microsatellite cluster, species-specific single nucleotide polymorphism (SNP), and different representation of alleles Du47 in the samples of parthenogenetic species examined point to the origin of the alleles from different bisexual species, which is consistent with the hybrid nature of unisexual species of the genus Darevskia. In addition, these data reflect different combination patterns of interspecific hybridization events with the participation of the same bisexual species upon the formation of hybrid genomes of parthenogenetic species. Possible application of the allelic variants of microsatellite loci of parthenogenetic lizards as the genetic markers for the analysis of the genomes of parthenogenetic species in the light of evolution, ecology, and parthenogenetic type of reproduction in vertebrates is discussed.
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