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Design and synthesis of germline-based hemi-humanized single-chain Fv against the CD18 surface antigen
The 6.7 murine monoclonal antibody (mAb) recognizes the human CD18 antigen and is therefore of interest as an anti-inflammatory agent. The 6.7 heavy variable chain (VH) was humanized using the closest human germline sequence as the template on to which to graft the murine complementary determining r...
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Published in: | Protein engineering 2000-05, Vol.13 (5), p.353-360 |
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container_title | Protein engineering |
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creator | Caldas, Cristina Coelho, Verônica P.C.V. Rigden, Daniel J. Neschich, Goran Moro, Ana Maria Brígido, Marcelo M. |
description | The 6.7 murine monoclonal antibody (mAb) recognizes the human CD18 antigen and is therefore of interest as an anti-inflammatory agent. The 6.7 heavy variable chain (VH) was humanized using the closest human germline sequence as the template on to which to graft the murine complementary determining regions (CDRs). Two versions were proposed, one in which the residue proline 45 of the murine form was maintained and another in which this framework residue was changed to the leucine found in the human sequence. These VH humanized versions were expressed in the yeast Pichia pastoris as hemi-humanized single-chain Fv (scFvs), with the VL from the murine antibody. The scFv from the murine antibody was also expressed. The binding activities of the murine and both hemi-humanized scFvs were determined by flow cytometry analysis. All the constructions were able to recognize human lymphocytes harboring CD18, indicating successful humanization with transfer of the original binding capability. Some differences between the two hemi-humanized versions were observed. The method used was simple and straightforward, with no need for refined structural analyses and could be used for the humanization of other antibodies. |
doi_str_mv | 10.1093/protein/13.5.353 |
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The 6.7 heavy variable chain (VH) was humanized using the closest human germline sequence as the template on to which to graft the murine complementary determining regions (CDRs). Two versions were proposed, one in which the residue proline 45 of the murine form was maintained and another in which this framework residue was changed to the leucine found in the human sequence. These VH humanized versions were expressed in the yeast Pichia pastoris as hemi-humanized single-chain Fv (scFvs), with the VL from the murine antibody. The scFv from the murine antibody was also expressed. The binding activities of the murine and both hemi-humanized scFvs were determined by flow cytometry analysis. All the constructions were able to recognize human lymphocytes harboring CD18, indicating successful humanization with transfer of the original binding capability. Some differences between the two hemi-humanized versions were observed. The method used was simple and straightforward, with no need for refined structural analyses and could be used for the humanization of other antibodies.</description><identifier>ISSN: 0269-2139</identifier><identifier>ISSN: 1741-0126</identifier><identifier>EISSN: 1460-213X</identifier><identifier>EISSN: 1741-0134</identifier><identifier>DOI: 10.1093/protein/13.5.353</identifier><identifier>PMID: 10835109</identifier><language>eng</language><publisher>England: Oxford University Press</publisher><subject>Amino Acid Sequence ; Animals ; CD18 ; CD18 Antigens - immunology ; Cloning, Molecular ; humanization ; Humans ; Immunoglobulin Variable Region - chemistry ; Immunoglobulin Variable Region - genetics ; Immunoglobulin Variable Region - immunology ; Mice ; Models, Molecular ; Molecular Sequence Data ; monoclonal antibody ; Pichia - genetics ; Pichia pastoris ; scFv ; Sequence Homology, Amino Acid</subject><ispartof>Protein engineering, 2000-05, Vol.13 (5), p.353-360</ispartof><rights>Oxford University Press 2000</rights><rights>Copyright Oxford University Press(England) May 2000</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c427t-fed959714927043a3bdac52aaba80ee33f3adda08aa09ae53442e218fe03afe93</citedby><cites>FETCH-LOGICAL-c427t-fed959714927043a3bdac52aaba80ee33f3adda08aa09ae53442e218fe03afe93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,786,790,1591,27957,27958</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/10835109$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Caldas, Cristina</creatorcontrib><creatorcontrib>Coelho, Verônica P.C.V.</creatorcontrib><creatorcontrib>Rigden, Daniel J.</creatorcontrib><creatorcontrib>Neschich, Goran</creatorcontrib><creatorcontrib>Moro, Ana Maria</creatorcontrib><creatorcontrib>Brígido, Marcelo M.</creatorcontrib><title>Design and synthesis of germline-based hemi-humanized single-chain Fv against the CD18 surface antigen</title><title>Protein engineering</title><addtitle>Protein Eng</addtitle><addtitle>Protein Eng</addtitle><description>The 6.7 murine monoclonal antibody (mAb) recognizes the human CD18 antigen and is therefore of interest as an anti-inflammatory agent. The 6.7 heavy variable chain (VH) was humanized using the closest human germline sequence as the template on to which to graft the murine complementary determining regions (CDRs). Two versions were proposed, one in which the residue proline 45 of the murine form was maintained and another in which this framework residue was changed to the leucine found in the human sequence. These VH humanized versions were expressed in the yeast Pichia pastoris as hemi-humanized single-chain Fv (scFvs), with the VL from the murine antibody. The scFv from the murine antibody was also expressed. The binding activities of the murine and both hemi-humanized scFvs were determined by flow cytometry analysis. All the constructions were able to recognize human lymphocytes harboring CD18, indicating successful humanization with transfer of the original binding capability. Some differences between the two hemi-humanized versions were observed. The method used was simple and straightforward, with no need for refined structural analyses and could be used for the humanization of other antibodies.</description><subject>Amino Acid Sequence</subject><subject>Animals</subject><subject>CD18</subject><subject>CD18 Antigens - immunology</subject><subject>Cloning, Molecular</subject><subject>humanization</subject><subject>Humans</subject><subject>Immunoglobulin Variable Region - chemistry</subject><subject>Immunoglobulin Variable Region - genetics</subject><subject>Immunoglobulin Variable Region - immunology</subject><subject>Mice</subject><subject>Models, Molecular</subject><subject>Molecular Sequence Data</subject><subject>monoclonal antibody</subject><subject>Pichia - genetics</subject><subject>Pichia pastoris</subject><subject>scFv</subject><subject>Sequence Homology, Amino Acid</subject><issn>0269-2139</issn><issn>1741-0126</issn><issn>1460-213X</issn><issn>1741-0134</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNqNkU1v1DAQhi0EotvCnROyOHCpsvVnYh_RLqVIlTi0RSsu1mwyybokzjZOEOXX4yqrquJCT56RnveRPC8h7zhbcmbl2X7oR_ThjMulXkotX5AFVznLBJebl2TBRG4fZntEjmO8ZYwZZsVrcsSZkToZFqReY_RNoBAqGu_DuEtrpH1NGxy61gfMthCxojvsfLabOgj-T1qjD02LWbkDH-j5LwpNGuJIU56u1tzQOA01lJi8o28wvCGvamgjvj28J-Tm_PP16iK7_Pbl6-rTZVYqUYxZjZXVtuDKioIpCXJbQakFwBYMQ5SyllBVwAwAs4BaKiVQcFMjk1CjlSfk4-xNl7mbMI6u87HEtoWA_RRdwbnmuVL_BQXTRhWFTOCHf8DbfhpC-oQTQitjc54niM1QOfQxDli7_eA7GO4dZ-6hKXdoynHptEtNpcj7g3fadlg9CczVJOB0Bvpp_xxdNtM-jvj7kYfhp8sLWWh3sfnhrnJuvq-vr9xG_gWvFq63</recordid><startdate>20000501</startdate><enddate>20000501</enddate><creator>Caldas, Cristina</creator><creator>Coelho, Verônica P.C.V.</creator><creator>Rigden, Daniel J.</creator><creator>Neschich, Goran</creator><creator>Moro, Ana Maria</creator><creator>Brígido, Marcelo M.</creator><general>Oxford University Press</general><general>Oxford Publishing Limited (England)</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7QO</scope><scope>7QP</scope><scope>7TK</scope><scope>7TM</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H94</scope><scope>K9.</scope><scope>M7N</scope><scope>P64</scope><scope>7T5</scope><scope>7X8</scope></search><sort><creationdate>20000501</creationdate><title>Design and synthesis of germline-based hemi-humanized single-chain Fv against the CD18 surface antigen</title><author>Caldas, Cristina ; Coelho, Verônica P.C.V. ; Rigden, Daniel J. ; Neschich, Goran ; Moro, Ana Maria ; Brígido, Marcelo M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c427t-fed959714927043a3bdac52aaba80ee33f3adda08aa09ae53442e218fe03afe93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Amino Acid Sequence</topic><topic>Animals</topic><topic>CD18</topic><topic>CD18 Antigens - immunology</topic><topic>Cloning, Molecular</topic><topic>humanization</topic><topic>Humans</topic><topic>Immunoglobulin Variable Region - chemistry</topic><topic>Immunoglobulin Variable Region - genetics</topic><topic>Immunoglobulin Variable Region - immunology</topic><topic>Mice</topic><topic>Models, Molecular</topic><topic>Molecular Sequence Data</topic><topic>monoclonal antibody</topic><topic>Pichia - genetics</topic><topic>Pichia pastoris</topic><topic>scFv</topic><topic>Sequence Homology, Amino Acid</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Caldas, Cristina</creatorcontrib><creatorcontrib>Coelho, Verônica P.C.V.</creatorcontrib><creatorcontrib>Rigden, Daniel J.</creatorcontrib><creatorcontrib>Neschich, Goran</creatorcontrib><creatorcontrib>Moro, Ana Maria</creatorcontrib><creatorcontrib>Brígido, Marcelo M.</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Immunology Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Protein engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Caldas, Cristina</au><au>Coelho, Verônica P.C.V.</au><au>Rigden, Daniel J.</au><au>Neschich, Goran</au><au>Moro, Ana Maria</au><au>Brígido, Marcelo M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Design and synthesis of germline-based hemi-humanized single-chain Fv against the CD18 surface antigen</atitle><jtitle>Protein engineering</jtitle><stitle>Protein Eng</stitle><addtitle>Protein Eng</addtitle><date>2000-05-01</date><risdate>2000</risdate><volume>13</volume><issue>5</issue><spage>353</spage><epage>360</epage><pages>353-360</pages><issn>0269-2139</issn><issn>1741-0126</issn><eissn>1460-213X</eissn><eissn>1741-0134</eissn><notes>ark:/67375/HXZ-S618VDTS-X</notes><notes>local:0130353</notes><notes>istex:493AEA1CC3F5E3C52523DBB42CCD3ED181AD8CBB</notes><notes>PII:1460-213X</notes><notes>ObjectType-Article-2</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-1</notes><notes>content type line 23</notes><notes>ObjectType-Article-1</notes><notes>ObjectType-Feature-2</notes><abstract>The 6.7 murine monoclonal antibody (mAb) recognizes the human CD18 antigen and is therefore of interest as an anti-inflammatory agent. The 6.7 heavy variable chain (VH) was humanized using the closest human germline sequence as the template on to which to graft the murine complementary determining regions (CDRs). Two versions were proposed, one in which the residue proline 45 of the murine form was maintained and another in which this framework residue was changed to the leucine found in the human sequence. These VH humanized versions were expressed in the yeast Pichia pastoris as hemi-humanized single-chain Fv (scFvs), with the VL from the murine antibody. The scFv from the murine antibody was also expressed. The binding activities of the murine and both hemi-humanized scFvs were determined by flow cytometry analysis. All the constructions were able to recognize human lymphocytes harboring CD18, indicating successful humanization with transfer of the original binding capability. Some differences between the two hemi-humanized versions were observed. The method used was simple and straightforward, with no need for refined structural analyses and could be used for the humanization of other antibodies.</abstract><cop>England</cop><pub>Oxford University Press</pub><pmid>10835109</pmid><doi>10.1093/protein/13.5.353</doi><tpages>8</tpages></addata></record> |
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subjects | Amino Acid Sequence Animals CD18 CD18 Antigens - immunology Cloning, Molecular humanization Humans Immunoglobulin Variable Region - chemistry Immunoglobulin Variable Region - genetics Immunoglobulin Variable Region - immunology Mice Models, Molecular Molecular Sequence Data monoclonal antibody Pichia - genetics Pichia pastoris scFv Sequence Homology, Amino Acid |
title | Design and synthesis of germline-based hemi-humanized single-chain Fv against the CD18 surface antigen |
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