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de Almeida R, Nakamura CN, de Lima Fontes M, Deffune E, Felisbino SL, Kaneno R, Fávaro WJ, Billis A, Cerri MO, Fusco-Almeida AM, Mendes Giannini MJ, Moroz A. Enhanced immunization techniques to obtain highly specific monoclonal antibodies. MAbs 2017; 10:46-54. [PMID: 28581886 PMCID: PMC5800380 DOI: 10.1080/19420862.2017.1331804] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Despite fast advances in genomics and proteomics, monoclonal antibodies (mAbs) are still a valuable tool for areas such as the evolution of basic research in stem cells and cancer, for immunophenotyping cell populations, diagnosing and prognosis of diseases, and for immunotherapy. To summarize different subtractive immunization approaches successfully used for the production of highly specific antibodies, we identified scientific articles in NCBI PubMed using the following search terms: subtractive immunization, monoclonal antibody, tolerization, neonatal, high-zone tolerance, masking immunization. Patent records were also consulted. From the list of results, we included all available reports, from 1985 to present, that used any enhanced immunization technique to produce either polyclonal or monoclonal antibodies. Our examination yielded direct evidence that these enhanced immunization techniques are efficient in obtaining specific antibodies to rare epitopes, with different applications, such as to identify food contaminants or tumor cells.
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Affiliation(s)
- Rodrigo de Almeida
- a Universidade Estadual Paulista (Unesp), Faculdade de Ciências Farmacêuticas, Araraquara, Proteomics Center, Monoclonal Antibody Lab. , Araraquara , Brazil
| | - Cecília Naomi Nakamura
- a Universidade Estadual Paulista (Unesp), Faculdade de Ciências Farmacêuticas, Araraquara, Proteomics Center, Monoclonal Antibody Lab. , Araraquara , Brazil
| | - Marina de Lima Fontes
- a Universidade Estadual Paulista (Unesp), Faculdade de Ciências Farmacêuticas, Araraquara, Proteomics Center, Monoclonal Antibody Lab. , Araraquara , Brazil
| | - Elenice Deffune
- b Universidade Estadual Paulista (Unesp), Faculdade de Medicina, Botucatu, Blood Transfusion Center, Cell Engineering Lab. , Botucatu , Brazil
| | - Sérgio Luis Felisbino
- c Universidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatu , Department of Morphology, Extracellular Matrix Lab ., Botucatu , Brazil
| | - Ramon Kaneno
- d Universidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatu , Department of Microbiology and Immunology, Tumor Immunology Lab ., Botucatu , Brazil
| | - Wagner José Fávaro
- e Univ Campinas - UNICAMP, Biology Institute , Department of Structural and Functional Biology, Immunotherapy Lab ., Campinas , SP , Brazil
| | - Athanase Billis
- f Univ Estadual Campinas - UNICAMP, School of Medicine , Department of Pathology, Uropathology Lab. , Campinas , SP , Brazil
| | - Marcel Otavio Cerri
- g Universidade Estadual Paulista (Unesp), Faculdade de Ciências Farmacêuticas, Araraquara , Department of Bioprocess and Biotechnology , Araraquara , Brazil
| | - Ana Marisa Fusco-Almeida
- a Universidade Estadual Paulista (Unesp), Faculdade de Ciências Farmacêuticas, Araraquara, Proteomics Center, Monoclonal Antibody Lab. , Araraquara , Brazil
| | - Maria José Mendes Giannini
- a Universidade Estadual Paulista (Unesp), Faculdade de Ciências Farmacêuticas, Araraquara, Proteomics Center, Monoclonal Antibody Lab. , Araraquara , Brazil
| | - Andrei Moroz
- a Universidade Estadual Paulista (Unesp), Faculdade de Ciências Farmacêuticas, Araraquara, Proteomics Center, Monoclonal Antibody Lab. , Araraquara , Brazil.,b Universidade Estadual Paulista (Unesp), Faculdade de Medicina, Botucatu, Blood Transfusion Center, Cell Engineering Lab. , Botucatu , Brazil.,g Universidade Estadual Paulista (Unesp), Faculdade de Ciências Farmacêuticas, Araraquara , Department of Bioprocess and Biotechnology , Araraquara , Brazil
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da Silveira WLL, Damasceno BPGL, Ferreira LF, Ribeiro ILS, Silva KS, Silva AL, Giannini MJM, da Silva-Júnior AA, de Oliveira AG, do Egito EST. Development and Characterization of a Microemulsion System Containing Amphotericin B with Potential Ocular Applications. Curr Drug Deliv 2017; 13:982-93. [PMID: 26549650 DOI: 10.2174/1570159x14666151109110734] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/18/2015] [Accepted: 11/04/2015] [Indexed: 11/22/2022]
Abstract
BACKGROUND Amphotericin B eye drops are widely used in the treatment of ocular infections. However, amphotericin's toxicity leads to low patient compliance and aggravation of symptoms. This work describes the development of a microemulsion system containing amphotericin B, aiming for its use in ocular applications. METHODS The microemulsion was developed by the titration technique. The physicochemical characteristics were determined with both loaded and unloaded amphotericin B-microemulsion. The nanostructures were analyzed by polarized light microscopy. The microdilution method was used to establish the minimum inhibitory concentration against fungal strains, and, therefore, evaluate the microemulsion activity. Additionally, in order to evaluate the microemulsion toxicity an in vitro toxicity assay against red blood cells was performed. RESULTS The performed studies showed that the presence of amphotericin B loaded into the system did not induce serious changes in the physicochemical properties of the microemulsion when compared to the unloaded system. The spectrophotometric studies depicted amphotericin B-self-associated species, which allow predicting its behavior in vitro. The high pressure liquid chromatography results revealed high drug content entrapment in the microemulsion droplet. Finally, the amphotericin B-microemulsion in vitro susceptibility test showed high activity against Candida strains and a low toxicity profile against red blood cells when compared to Fungizone®. CONCLUSION The physicochemical characterization of the microemulsion demonstrated that its characteristics are compatible with the topical ocular route, making it eligible for consideration as a new and interesting amphotericin B-deliverydosage form to be used as eye drop formulation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - E Sócrates Tabosa do Egito
- Department of Pharmacy, Universidade Federal do Rio Grande do Norte, Rua Praia de Areia Branca, 8948, CEP 59094-450, Natal, RN, Brazil.
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