Journal
JOURNAL OF IMMUNOLOGICAL METHODS
Volume 329, Issue 1-2, Pages 112-124Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jim.2007.09.017
Keywords
antibody; single cell PCR; self-reactivity; polyreactivity
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Funding
- NIAID NIH HHS [R01 AI037526-14, R01 AI037526] Funding Source: Medline
- NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES [R01AI037526] Funding Source: NIH RePORTER
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We have developed an efficient strategy that combines immunoglobulin (Ig) gene repertoire analysis and Ig reactivity profiling at the single cell level. Based on surface marker expression individual cells at different stages of human B cell development are isolated by fluorescence-activated cell sorting. For each cell Ig heavy and corresponding Ig light chain gene transcripts are amplified by nested RT-PCR and cloned into eukaryotic expression vectors to produce monoclonal human antibodies of the same specificity in vitro. All reactions are performed in 96-well plates and allow cloning of large numbers of Ig genes. The recombinant antibodies are tested for reactivity with diverse self- and non-self antigens and the reactivity profile can be directly linked to the complete Ig heavy and Ig light chain gene sequence information that is obtained as part of the cloning strategy. In summary, our method to clone and express human monoclonal antibodies is unbiased, highly efficient, requires only small cell numbers and the recombinant antibodies allow direct conclusions on the frequency of specific human B cells in a diverse repertoire. (C) 2007 Elsevier B.V. All rights reserved.
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