Monoclonal Antibody Generation through Single B Cell

Isolation of monoclonal antibodies is an important technique for understanding the specificities and characteristics of antibodies that underlie the humoral immune response to a given antigen. Using single B cell cloning of antigen specific single B cells and expression and screening their secreted monoclonal antibodies have bypassed many of these limitations and enabled the isolation of antibodies that are particularly rare or difficult to clone, such as the classic hybrodoma utilizing the Kohler and Milstein’s technique.

Fusion Biolabs proudly offers high affinity monoclonal antibody developing services through our single B cell antibody technology. It offers several advantages over traditional mAb technologies, including shorter timelines, higher throughput, and compatibility with artificial intelligence (AI) powered affinity maturation. This technology is based on the analysis of the immunoglobulin gene repertoire and reactivity at the single-cell level by the application of reverse transcription-polymerase chain reaction (RT-PCR) and our expression vector cloning system. The technique involves the isolation and retrieval of antibody-coding sequences of antigen-specific B cells by leveraging miniaturization of reaction volumes. Alternatively, mAbs can be generated independently of antigen-specific B cells, comprising display technologies and, more recently, artificial intelligence-driven algorithms.

Process Overview

Phase 1: Single B Cell isolation through fluorescence-activated Cell Sorting (FACS) or other method

Phase 2: Sequencing variable region of heavy chain and light chain (VH and VL) of functional single B cell isolated from above

Phase 3: Encoded VH and VL will be individually cloned into Fusion Biolabs vector expression cloning system

Phase 4: Monoclonal antibody expression, screening and characterization

Screening and Characterization

Assays available for antibody characterization to facilitate development:

Deliverables:

1) Candidate monoclonal antibody sequences (3-10 clones)

2) Candidate monoclonal antibody protein small scale production (>100 µg)

3) Project report of candidate monoclonal antibody screening and characterization

Ordering Information

Monoclonal Antibody Developing via Single B Cell Technologies

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