1
|
Reche-Perez FJ, Plesselova S, De Los Reyes-Berbel E, Ortega-Muñoz M, Lopez-Jaramillo FJ, Hernandez-Mateo F, Santoyo-Gonzalez F, Salto-Gonzalez R, Giron-Gonzalez MD. Single chain variable fragment fused to maltose binding protein: a modular nanocarrier platform for the targeted delivery of antitumorals. Biomater Sci 2021; 9:1728-1738. [PMID: 33432316 DOI: 10.1039/d0bm01903h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The use of the specific binding properties of monoclonal antibody fragments such as single-chain variable fragments (ScFv) for the selective delivery of antitumor therapeutics for cancer cells is attractive due to their smaller size, low immunogenicity, and low-cost production. Although covalent strategies for the preparation of such ScFv-based therapeutic conjugates are prevalent, this approach is not straightforward, as it requires prior chemical activation and/or modification of both the ScFv and the therapeutics for the application of robust chemistries. A non-covalent alternative based on ScFv fused to maltose-binding protein (MBP) acting as a binding adapter is proposed for active targeted delivery. MBP-ScFv proves to be a valuable modular platform to synergistically bind maltose-derivatized therapeutic cargos through the MBP, while preserving the targeting competences provided by the ScFv. The methodology has been tested by using a mutated maltose-binding protein (MBP I334W) with an enhanced affinity toward maltose and an ScFv coding sequence toward the human epidermal growth factor receptor 2 (HER2). Non-covalent binding complexes of the resulting MBP-ScFv fusion protein with diverse maltosylated therapeutic cargos (a near-infrared dye, a maltosylated supramolecular β-cyclodextrin container for doxorubicin, and non-viral polyplex gene vector) were easily prepared and characterized. In vitro and in vivo assays using cell lines that express or not the HER2 epitope, and mice xenografts of HER2 expressing cells demonstrated the capability and versatility of MBP-ScFv for diagnosis, imaging, and drug and plasmid active targeted tumor delivery. Remarkably, the modularity of the MBP-ScFv platform allows the flexible interchange of both the cargos and the coding sequence for the ScFv, allowing ad hoc solutions in targeting delivery without any further optimization since the MBP acts as a pivotal element.
Collapse
Affiliation(s)
- Francisco J Reche-Perez
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, E-18071 Granada, Spain. and Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Simona Plesselova
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, E-18071 Granada, Spain. and Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Eduardo De Los Reyes-Berbel
- Department of Organic Chemistry, School of Sciences, Biotechnology Institute, University of Granada, E-18071 Granada, Spain and Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Mariano Ortega-Muñoz
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, E-18071 Granada, Spain. and Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Francisco J Lopez-Jaramillo
- Department of Organic Chemistry, School of Sciences, Biotechnology Institute, University of Granada, E-18071 Granada, Spain and Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Fernando Hernandez-Mateo
- Department of Organic Chemistry, School of Sciences, Biotechnology Institute, University of Granada, E-18071 Granada, Spain and Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Francisco Santoyo-Gonzalez
- Department of Organic Chemistry, School of Sciences, Biotechnology Institute, University of Granada, E-18071 Granada, Spain and Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Rafael Salto-Gonzalez
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, E-18071 Granada, Spain. and Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Maria D Giron-Gonzalez
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, E-18071 Granada, Spain. and Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain
| |
Collapse
|
2
|
Gil LAF, da Cunha CEP, Moreira GMSG, Salvarani FM, Assis RA, Lobato FCF, Mendonça M, Dellagostin OA, Conceição FR. Production and evaluation of a recombinant chimeric vaccine against clostridium botulinum neurotoxin types C and D. PLoS One 2013; 8:e69692. [PMID: 23936080 PMCID: PMC3729698 DOI: 10.1371/journal.pone.0069692] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 05/25/2013] [Indexed: 11/19/2022] Open
Abstract
Bovine botulism is a fatal disease that is caused by botulinum neurotoxins (BoNTs) produced by Clostridium botulinum serotypes C and D and that causes great economic losses, with nearly 100% lethality during outbreaks. It has also been considered a potential source of human food-borne illness in many countries. Vaccination has been reported to be the most effective way to control bovine botulism. However, the commercially available toxoid-based vaccines are difficult and hazardous to produce. Neutralizing antibodies targeted against the C-terminal fragment of the BoNT heavy chain (HC) are known to confer efficient protection against lethal doses of BoNTs. In this study, a novel recombinant chimera, consisting of Escherichia coli heat-labile enterotoxin B subunit (LTB), a strong adjuvant of the humoral immune response, fused to the HC of BoNT serotypes C and D, was produced in E. coli. Mice vaccinated with the chimera containing LTB and an equivalent molar ratio of the chimera without LTB plus aluminum hydroxide (Al(OH)3) developed 2 IU/mL of antitoxins for both serotypes. Guinea pigs immunized with the recombinant chimera with LTB plus Al(OH)3 developed a protective immune response against both BoNT/C (5 IU/mL) and BoNT/D (10 IU/mL), as determined by a mouse neutralization bioassay with pooled sera. The results achieved with guinea pig sera fulfilled the requirements of commercial vaccines for prevention of botulism, as determined by the Brazilian Ministry of Agriculture, Livestock and Food, Supply. The presence of LTB was essential for the development of a strong humoral immune response, as it acted in synergism with Al(OH)3. Thus, the vaccine described in this study is a strong candidate for the control of botulism in cattle.
Collapse
Affiliation(s)
- Luciana A. F. Gil
- Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Carlos Eduardo P. da Cunha
- Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Gustavo M. S. G. Moreira
- Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Felipe M. Salvarani
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ronnie A. Assis
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Marcelo Mendonça
- Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Odir A. Dellagostin
- Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Fabricio R. Conceição
- Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil
- * E-mail:
| |
Collapse
|
3
|
Rodríguez-Rodríguez ER, Ledezma-Candanoza LM, Contreras-Ferrat LG, Olamendi-Portugal T, Possani LD, Becerril B, Riaño-Umbarila L. A Single Mutation in Framework 2 of the Heavy Variable Domain Improves the Properties of a Diabody and a Related Single-Chain Antibody. J Mol Biol 2012; 423:337-50. [DOI: 10.1016/j.jmb.2012.07.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 07/02/2012] [Accepted: 07/06/2012] [Indexed: 10/28/2022]
|