Rapid selection of single cells with high antibody production rates by microwell array

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Selection of single cells capable of producing target proteins at high rates is crucial for the development of protein manufacturing processes. Here, we present the rapid selection of single cells producing immunoglobulin antibodies at high specific rates by microwell array and microengraving. Chinese hamster ovary (CHO) cells secreting chimeric antibodies were deposited in a microwell array in a manner such that each microwell contained a single cell. Secreted antibodies in the microwells were transferred onto a glass slide by microengraving, followed by interrogation using fluorescence-based immunoassay. Single cells displaying high signal intensities were selected, retrieved, and clonally expanded to assess their specific antibody production rates. Three successive rounds of the process resulted in the selection of single cells showing significantly increased antibody production rates. The present approach can be applied to the selection of single cells for producing other therapeutic proteins in a high-throughput manner. (C) 2011 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2011-12
Language
English
Article Type
Article
Keywords

CHO-CELLS; LINE DEVELOPMENT; BIOPHARMACEUTICALS

Citation

JOURNAL OF BIOTECHNOLOGY, v.156, no.3, pp.197 - 202

ISSN
0168-1656
URI
http://hdl.handle.net/10203/98654
Appears in Collection
BS-Journal Papers(저널논문)
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