Cell Line Development

Cell line development is a critical step in the process of generating biopharmaceutical molecules, such as monoclonal antibodies. The process often begins with transfecting the host cell type with the DNA encoding the therapeutic protein of interest allowing for random or directed integration of target DNA into the host cell genome. Thousands of clones are screened to isolate the rare high producing cells, a manual and time-consuming process.

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Monoclonal Antibodies (mAbs)

Monoclonal antibodies (mAbs) originate from one unique parent cell, thus binding only to a single epitope. Monoclonal antibody discovery typically refers to the screening and identification of specific antibodies that target a specific epitope for the diagnosis and treatment of diseases, like the coronavirus for COVID-19.

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Monoclonality

Cell line development and assurance of monoclonality are critical steps in the process of generating biopharmaceutical molecules, such as monoclonal antibodies. A cell line can be established following the isolation of a single viable cell robustly expressing the protein of interest. A key milestone in this process is documenting evidence of clonality. Documentation of clonality is typically image-based, whereby an image of a single cell is produced and included in regulatory filings.

Single-Cell Genomics

The isolation of single cells remains a challenging task in single-cell genomics. Current methods lack the evidence that only a single-cell has been isolated in the analysis vessel. It is important that the integrity of the cells is maintained prior to their lysis in order to preserve their DNA.

Furthermore, cells should undergo as little stress as possible prior to their lysis in order to preserve their RNA and its expression level. The CloneSelect Single-Cell Printer Series deposits single cells in a very gentle manner, guaranteeing high purity and high viability.

This provides optimal basis for downstream single-cell genomic analysis.

Single-Cell Sorting

Cell line development requires the discovery of single cell-derived clones that produce high and consistent levels of the target therapeutic protein. The first step in the process is the isolation of single, viable cells. Limiting dilution is a technique that relies on statistical probability but is time consuming. The DispenCell™ Single-Cell Dispenser enables fast, easy, and gentle isolation of cells, as well as provides instantaneous proof of clonality and traceability post-cell dispensing.