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Kim S, Park I, Park SG, Cho S, Kim JH, Ipper NS, Choi SS, Lee ES, Hong HJ. Generation, Diversity Determination, and Application to Antibody Selection of a Human Naïve Fab Library. Mol Cells 2017; 40:655-666. [PMID: 28927259 PMCID: PMC5638773 DOI: 10.14348/molcells.2017.0106] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 08/04/2017] [Accepted: 08/06/2017] [Indexed: 12/29/2022] Open
Abstract
We constructed a large naïve human Fab library (3 × 1010 colonies) from the lymphocytes of 809 human donors, assessed available diversities of the heavy-chain variable (VH) and κ light-chain variable (VK) domain repertoires, and validated the library by selecting Fabs against 10 therapeutically relevant antigens by phage display. We obtained a database of unique 7,373 VH and 41,804 VK sequences by 454 pyrosequencing, and analyzed the repertoires. The distribution of VH and VK subfamilies and germline genes in our antibody repertoires slightly differed from those in earlier published natural antibody libraries. The frequency of somatic hypermutations (SHMs) in heavy-chain complementarity determining region (HCDR)1 and HCDR2 are higher compared with the natural IgM repertoire. Analysis of position-specific SHMs in CDRs indicates that asparagine, threonine, arginine, aspartate and phenylalanine are the most frequent non-germline residues on the antibody-antigen interface and are converted mostly from the germline residues, which are highly represented in germline SHM hotspots. The amino acid composition and length-dependent changes in amino acid frequencies of HCDR3 are similar to those in previous reports, except that frequencies of aspartate and phenylalanine are a little higher in our repertoire. Taken together, the results show that this antibody library shares common features of natural antibody repertoires and also has unique features. The antibody library will be useful in the generation of human antibodies against diverse antigens, and the information about the diversity of natural antibody repertoires will be valuable in the future design of synthetic human antibody libraries with high functional diversity.
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Affiliation(s)
- Sangkyu Kim
- Department of Systems Immunology, College of Biomedical Science, Kangwon National University, Chuncheon 24341,
Korea
| | - Insoo Park
- Therapeutic Antibody Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141,
Korea
| | - Seung Gu Park
- Department of Medical Biotechnology, College of Biomedical Science, Kangwon National University, Chuncheon 24341,
Korea
| | - Seulki Cho
- Therapeutic Antibody Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141,
Korea
| | - Jin Hong Kim
- Therapeutic Antibody Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141,
Korea
| | - Nagesh S. Ipper
- Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon 24341,
Korea
| | - Sun Shim Choi
- Department of Medical Biotechnology, College of Biomedical Science, Kangwon National University, Chuncheon 24341,
Korea
| | - Eung Suk Lee
- Scripps Korea Antibody Institute, Chuncheon 24341,
Korea
| | - Hyo Jeong Hong
- Department of Systems Immunology, College of Biomedical Science, Kangwon National University, Chuncheon 24341,
Korea
- Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon 24341,
Korea
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2
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Parra GI, Sosnovtsev SV, Abente EJ, Sandoval-Jaime C, Bok K, Dolan MA, Green KY. Mapping and modeling of a strain-specific epitope in the Norwalk virus capsid inner shell. Virology 2016; 492:232-41. [PMID: 26971245 PMCID: PMC11036327 DOI: 10.1016/j.virol.2016.02.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 02/12/2016] [Accepted: 02/21/2016] [Indexed: 11/17/2022]
Abstract
Noroviruses are diverse positive-strand RNA viruses associated with acute gastroenteritis. Cross-reactive epitopes have been mapped primarily to conserved sequences in the capsid VP1 Shell (S) domain, and strain-specific epitopes to the highly variable Protruding (P) domain. In this work, we investigated a strain-specific linear epitope defined by MAb NV10 that was raised against prototype (Genogroup I.1) strain Norwalk virus (NV). Using peptide scanning and mutagenesis, the epitope was mapped to amino acids 21-32 (LVPEVNASDPLA) of the NV S domain, and its specificity was verified by epitope transfer and reactivity with a recombinant MAb NV10 single-chain variable fragment (scFv). Comparative structural modeling of the NV10 strain-specific and the broadly cross-reactive TV20 epitopes identified two internal non-overlapping sites in the NV shell, corresponding to variable and conserved amino acid sequences among strains, respectively. The S domain, like the P domain, contains strain-specific epitopes that contribute to the antigenic diversity among the noroviruses.
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Affiliation(s)
- Gabriel I Parra
- Caliciviruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Stanislav V Sosnovtsev
- Caliciviruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Eugenio J Abente
- Caliciviruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Carlos Sandoval-Jaime
- Caliciviruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Karin Bok
- Caliciviruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Michael A Dolan
- Bioinformatics and Computational Biosciences Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Kim Y Green
- Caliciviruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
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Cho S, Park I, Kim H, Jeong MS, Lim M, Lee ES, Kim JH, Kim S, Hong HJ. Generation, characterization and preclinical studies of a human anti-L1CAM monoclonal antibody that cross-reacts with rodent L1CAM. MAbs 2016; 8:414-25. [PMID: 26785809 PMCID: PMC5037990 DOI: 10.1080/19420862.2015.1125067] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
L1 cell adhesion molecule (L1CAM) is aberrantly expressed in malignant tumors and plays important roles in tumor progression. Thus, L1CAM could serve as a therapeutic target and anti-L1CAM antibodies may have potential as anticancer agents. However, L1CAM is expressed in neural cells and the druggability of anti-L1AM antibody must be validated at the earliest stages of preclinical study. Here, we generated a human monoclonal antibody that is cross-reactive with mouse L1CAM and evaluated its pharmacokinetic properties and anti-tumor efficacy in rodent models. First, we selected an antibody (Ab4) that binds human and mouse L1CAM from the human naïve Fab library using phage display, then increased its affinity 45-fold through mutation of 3 residues in the complementarity-determining regions (CDRs) to generate Ab4M. Next, the affinity of Ab4M was increased 1.8-fold by yeast display of single-chain variable fragment containing randomly mutated light chain CDR3 to generate Ab417. The affinities (KD) of Ab417 for human and mouse L1CAM were 0.24 nM and 79.16 pM, respectively. Ab417 specifically bound the Ig5 domain of L1CAM and did not exhibit off-target activity, but bound to the peripheral nerves embedded in normal human tissues as expected in immunohistochemical analysis. In a pharmacokinetics study, the mean half-life of Ab417 was 114.49 h when a single dose (10 mg/kg) was intravenously injected into SD rats. Ab417 significantly inhibited tumor growth in a human cholangiocarcinoma xenograft nude mouse model and did not induce any adverse effect in in vivo studies. Thus, Ab417 may have potential as an anticancer agent.
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Affiliation(s)
- Seulki Cho
- a Department of Functional Genomics , University of Science & Technology , Daejeon , Korea.,b Institute of Bioscience and Biotechnology, Kangwon National University , Chuncheon , Korea
| | - Insoo Park
- c Immunotherapy Research Center, Korea Research Institute of Bioscience & Biotechnology , Daejeon , Korea
| | - Haejung Kim
- b Institute of Bioscience and Biotechnology, Kangwon National University , Chuncheon , Korea
| | - Mun Sik Jeong
- d Department of Systems Immunology , Kangwon National University , Chuncheon , Korea
| | - Mooney Lim
- d Department of Systems Immunology , Kangwon National University , Chuncheon , Korea
| | - Eung Suk Lee
- b Institute of Bioscience and Biotechnology, Kangwon National University , Chuncheon , Korea
| | - Jin Hong Kim
- b Institute of Bioscience and Biotechnology, Kangwon National University , Chuncheon , Korea
| | - Semi Kim
- c Immunotherapy Research Center, Korea Research Institute of Bioscience & Biotechnology , Daejeon , Korea
| | - Hyo Jeong Hong
- b Institute of Bioscience and Biotechnology, Kangwon National University , Chuncheon , Korea.,d Department of Systems Immunology , Kangwon National University , Chuncheon , Korea
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Kim JH, Gripon P, Bouezzedine F, Jeong MS, Chi SW, Ryu SE, Hong HJ. Enhanced humanization and affinity maturation of neutralizing anti-hepatitis B virus preS1 antibody based on antigen-antibody complex structure. FEBS Lett 2014; 589:193-200. [PMID: 25481411 DOI: 10.1016/j.febslet.2014.11.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 11/20/2014] [Accepted: 11/25/2014] [Indexed: 12/31/2022]
Abstract
To improve a previously constructed broadly neutralizing hepatitis B virus (HBV)-specific preS1 humanized antibody (HzKR127), we further humanized it through specificity-determining residue (SDR) grafting. Moreover, we improved affinity by mutating two residues in heavy-chain complementarity-determining regions (CDR), on the basis of the crystal structure of the antigen-antibody complex. HzKR127-3.2 exhibited 2.5-fold higher affinity and enhanced virus-neutralizing activity compared to the original KR127 antibody and showed less immunogenic potential than HzKR127. Enhanced virus-neutralizing activity was achieved by the increased association rate, providing insights into engineering potent antibody therapeutics for HBV immunoprophylaxis. HzKR127-3.2 may be a good candidate for HBV immunoprophylaxis.
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Affiliation(s)
- Jin Hong Kim
- Institute of Antibody Research, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Philippe Gripon
- Institut de Recherche Santé Environnement et Travail (IRSET) - U.1085, Institut National de la Santé et de la Recherche Médicale (Inserm), Rennes, Bretagne, France; Université de Rennes 1, Rennes, Bretagne, France; Structure Fédérative Biosit UMS 3480 CNRS-US18 Inserm, Rennes, Bretagne, France
| | - Fidaa Bouezzedine
- Institut de Recherche Santé Environnement et Travail (IRSET) - U.1085, Institut National de la Santé et de la Recherche Médicale (Inserm), Rennes, Bretagne, France; Université de Rennes 1, Rennes, Bretagne, France; Structure Fédérative Biosit UMS 3480 CNRS-US18 Inserm, Rennes, Bretagne, France
| | - Mun Sik Jeong
- Institute of Antibody Research, Kangwon National University, Chuncheon 200-701, Republic of Korea; Department of Systems Immunology, College of Biomedical Science, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Seung-Wook Chi
- Medical Proteomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea
| | - Seong-Eon Ryu
- Department of Bio-engineering and Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, Seoul 133-791, Republic of Korea
| | - Hyo Jeong Hong
- Institute of Antibody Research, Kangwon National University, Chuncheon 200-701, Republic of Korea; Department of Systems Immunology, College of Biomedical Science, Kangwon National University, Chuncheon 200-701, Republic of Korea.
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Lee ES, Jeong MS, Singh R, Jung J, Yoon H, Min JK, Kim KH, Hong HJ. A chimeric antibody to L1 cell adhesion molecule shows therapeutic effect in an intrahepatic cholangiocarcinoma model. Exp Mol Med 2012; 44:293-302. [PMID: 22248567 PMCID: PMC3349911 DOI: 10.3858/emm.2012.44.4.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Intrahepatic cholangiocarcinoma (ICC), a malignant tumor derived from the intrahepatic bile duct epithelium, has a poor prognosis and is refractory to conventional chemotherapy and radiation therapy. Thus, there is an urgent need to develop new effective therapeutic strategies for this disease. We previously found that L1 cell adhesion molecule (L1CAM) plays an important role in tumor progression of ICC, and we generated a murine mAb, A10-A3 (IgG1), that binds to the Ig1 domain of L1CAM. In the present study, we further characterized A10-A3, constructed a chimeric A10-A3 antibody (cA10-A3) containing the constant regions of human IgG1, and evaluated the therapeutic potential in a human ICC xenograft nude mice model. The affinities (KD) of A10-A3 and cA10-A3 for soluble L1CAM were 1.8 nM and 1.9 nM, respectively, as determined by competition ELISA. A10-A3 inhibited L1CAM homophilic binding and was slowly internalized into the tumor cells, but it did not significantly inhibit proliferation of ICC cells in vitro. cA10-A3 mediated antibody- dependent cell-mediated cytotoxicity in vitro and displayed anti-tumor activity in the ICC animal model. These results suggest that the humanized A10-A3 antibody may have potential as an anticancer agent for the treatment of ICC.
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Affiliation(s)
- Eung Suk Lee
- Department of Systems Immunology and Institute of Antibody Research, College of Biomedical Science, Kangwon National University, Chuncheon 200-701, Korea
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Yao D, Yu J, Pan Y, Huang F, Bian H, Yu Q, Liang H. Spectroscopic Studies on the Binding of Kaempferol-3,7-α-L-rhamnopyranoside to Bovine Serum Albumin. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201180475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Selection of an affinity-matured antibody against a defined epitope by phage display of an immune antibody library. J Immunol Methods 2007; 329:176-83. [PMID: 18021795 DOI: 10.1016/j.jim.2007.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2007] [Revised: 08/14/2007] [Accepted: 10/16/2007] [Indexed: 12/14/2022]
Abstract
In a previous study, we generated a murine hepatitis B virus (HBV)-neutralizing monoclonal antibody (mAb), KR127, that binds to an epitope (amino acids 37-45, NSNNPDWDF) of the preS1 antigen. Furthermore, an epitope tag, S1 (NANNPDWDF), was developed for protein tagging. The aim of the present study was to develop a high-affinity antibody to the same preS1 epitope. Mice were immunized with the N-terminal domain of human thrombopoietin fused to the S1 tag (nTPO-S1), and a phage-displayed chimeric Fab library was constructed and screened by panning against nTPO-S1. A high-affinity antibody (3-34) was selected that binds to the preS1 antigen. The IgG molecules of 3-34 showed approximately nine-fold higher affinity (K(D) 1.2 nM) for preS1 compared with KR127 (K(D) 10.4 nM), competed with KR127 for binding to the epitope, and bound to HBV particles. This study provides a simple and efficient way to develop a high-affinity antibody to a defined epitope by phage display of an immune antibody library.
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Alves Vianna CO, da Silva E Mouta Júnior S, da Glória Teixeira Martins M, Batoreu NM, Queiroz JL, Gomes SA, Magalhães de Andrade Góes AC, Garcia Armoa GR, Marques CH, Baroni de Moraes MT. Evaluation of murine monoclonal antibodies targeting different epitopes of the hepatitis B virus surface antigen by using immunological as well as molecular biology and biochemical approaches. J Immunol Methods 2006; 313:38-47. [PMID: 16753174 DOI: 10.1016/j.jim.2006.03.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2005] [Revised: 03/06/2006] [Accepted: 03/08/2006] [Indexed: 01/22/2023]
Abstract
The hepatitis B virus surface protein (HBsAg) displays the major B cells antigenic determinants that can induce protective immunity and prevent the hepatitis B virus (HBV) infection, a major health problem. A panel of murine monoclonal antibodies against the HBsAg (MAb anti-HBs), raised after mice immunization with a pool of plasma of hepatitis chronic carriers, has been established. Mainly using simple immunological tools such as enzyme-linked immunosorbent assay (ELISA) and Western blot analysis, we could trace the location of the epitopes on the HBsAg determinants. We also report the use of two specific methodology approaches based on molecular biology and biochemical techniques such as, respectively, cloning and expression of preS1 major neutralizing epitope of the HBsAg in Escherichia coli and ELISA accomplished to chemical reduction with dithiothreitol (DTT), which were able to complete the MAb anti-HBs characterization. Our results showed that the majority of the MAbs anti-HBs were directed to the HBV common determinant a. One MAb recognizes a discontinuous epitope present in all forms of the HBsAg when evaluated by Western blot.
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Affiliation(s)
- Carlos Otávio Alves Vianna
- Laboratory of Monoclonal Antibodies Technology, Bio-Manguinhos, Oswaldo Cruz Foundation, FIOCRUZ, P.O. Box 926, Rio de Janeiro, Brazil
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Lim NK, Kim JH, Kim SY, Kang HJ, Kim KS, Lee S, Hong HJ, Inn KS. Monoclonal anti-thrombopoietin antibodies generated by genetic immunization. Hybridoma (Larchmt) 2006; 25:75-9. [PMID: 16704307 DOI: 10.1089/hyb.2006.25.75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Thrombopoietin (TPO) is a megakaryocyte growth and differentiation factor that is currently being investigated as a therapeutic for cancer patients undergoing myelosuppressive chemotherapy. We generated monoclonal antibodies (MAbs) specific for human thrombopoietin (hTPO) by genetic immunization using an hTPO expression plasmid and an adjuvant plasmid that encodes mouse granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin-4 (IL-4). All genetically immunized mice exhibited a high humoral immune response. Splenocytes from these mice were used to generate hybridomas. Two MAbs, designated 2B9A10 and 4C16B15 (of IgG1 and IgG3 isotypes, respectively), were subsequently selected and produced. They specifically recognized and precipitated recombinant hTPO produced by mammalian cells and were effective in sandwich enzyme-linked immunosorbent assays (ELISAs) for hTPO quantitation. Our results demonstrate that these MAbs should be useful for purification and quantitation of hTPO in clinical and laboratory settings.
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Affiliation(s)
- Nam-Kyu Lim
- Research and Development Center, Aprogen Inc., Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejon, South Korea
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Lim NK, Kim JH, Oh MS, Lee S, Kim SY, Kim KS, Kang HJ, Hong HJ, Inn KS. An anthrax lethal factor-neutralizing monoclonal antibody protects rats before and after challenge with anthrax toxin. Infect Immun 2005; 73:6547-51. [PMID: 16177329 PMCID: PMC1230968 DOI: 10.1128/iai.73.10.6547-6551.2005] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Lethal factor (LF) is a component of anthrax lethal toxin (LeTx). We generated anti-LF murine monoclonal antibodies (MAbs) that show LeTx-neutralizing activity in vitro and in vivo. Anti-LF MAbs were generated by immunization with recombinant LF, and the MAbs showing LeTx-neutralizing activity in vitro were selected. Two MAbs with the highest affinities, 5B13B1 (dissociation constant [K(d)], 2.62 nM) and 3C16C3 (K(d), 8.18 nM), were shown to recognize the same or closely overlapping epitopes on domain III of LF. The 50% inhibitory concentration of 5B13B1 (0.21 microg/ml) was approximately one-third that of 3C16C3 (0.63 microg/ml) in the in vitro LeTx-neutralization assay. The 5B13B1 antibody, which had the highest neutralizing activity, provided perfect protection against LeTx challenge in an in vivo LeTx neutralization assay using Fisher 344 rats. In addition, the antibody showed pre- and postexposure prophylactic effects in the animal experiments. This is the first report that an MAb binding to domain III of LF has neutralizing activity against LeTx. The 5B13B1 antibody may be useful in prophylaxis against anthrax poisoning.
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Affiliation(s)
- Nam-Kyu Lim
- R&D Center, Aprogen, Inc., Bio Venture Center #311, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejon
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Hoe LN, Wan KL, Nathan S. Construction and characterization of recombinant single-chain variable fragment antibodies against Toxoplasma gondii MIC2 protein. Parasitology 2005; 131:759-68. [PMID: 16336729 DOI: 10.1017/s0031182005008450] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2004] [Revised: 04/14/2005] [Accepted: 05/24/2005] [Indexed: 11/06/2022]
Abstract
The protozoan parasite Toxoplasma gondii produces a family of microneme proteins that are thought to play diverse roles in aiding the parasite's intracellular existence. Among these, TgMIC2 has a putative function in parasite adhesion to the host cell to initiate the invasion process. The invasion process may be localized and inhibited by monoclonal antibodies against the protein(s) involved. Here we report on the construction of a phage-displayed single-chain variable fragment (scFv) library from mice immunized with whole T. gondii parasites. The library was subsequently panned against recombinant TgMIC2 (rpTgMIC2) and 2 different groups of antibody clones were obtained, based on fingerprinting and sequencing data. The expressed recombinant scFv antibody was able to recognize rpTgMIC2 in a Western blot detection experiment. These results show that the phage display technology allows quick and effective production of monoclonal antibodies against parasite antigens. By panning the scFv-displayed library, we should be able to obtain a plethora of multi-functional scFv antibodies towards T. gondii proteins.
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Affiliation(s)
- L-N Hoe
- Centre for Gene Analysis and Technology, School of Biosciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor D. E., Malaysia
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