The Hybridoma Core Facility was established to provide investigators at the Lerner Research Institute with a resource for monoclonal antibody production. The facility also provides consultation services to assist the investigator in all aspects of monoclonal antibody production. The services are performed under strict QC guidelines appropriate for antibodies that may have commercial potential.

There are two phases of monoclonal antibody production: the development of the hybridoma cell line and production of the monoclonal antibody from the established hybridoma cell line. Currently, the HCF offers three methods for monoclonal antibody production from hybridoma cell lines, two in vitro methods (tissue culture and the Integra system) and one in vivo method (ascites production). In the last few years there has been a move in the scientific community to seek alternative methods to avoid or minimize the use of animals in research. The HCF will only use the in vivo ascites method if the in vitro methods fail. The majority of hybridoma cell lines will grow in vitro; the choice of method depends on the amount, concentration, and purity of antibody required. Hybridoma cell lines that do not grow or produce antibody by in vitro methods, will require the in vivo ascites method. The HCF will require the investigator to obtain an Animal Research Committee (ARC) approved protocol for use of ascites production in the context of their research.
Polyclonal antibody production is offered on a limited basis, dependent on available space in the BRU.
For information on antigen preparation for monoclonal and polyclonal antibody production please call Earl Poptic. Feedback and suggestions: email poptice@ccf.org
| Service | Description |
| Prefusion | The investigator will provide the antigen and the HCF will prepare it for injection. Immunization and serum collection from mice for screening by investigator. Includes animals, labor and supplies. This phase goes at least 8 weeks or until desired titer is reached. |
| Fusion | Fusion of spleen cells from chosen mouse to myeloma cell line. Plating of fused cells and collection of media samples for screening by the investigator. Includes labor and supplies.This phase goes 4-6 weeks. |
| Cloning | Limiting dilution cloning of five chosen hybridoma cell lines. Collection of media samples for screening by the investigator. Minimal scale up and preparation of frozen stocks (5 vials) of clones are completed by HCF. Includes labor and supplies. This phase goes 4-8 weeks. |
| MAb production of mAb from cell lines by cell culture methods | Cell culture expansion of cloned hybridoma cell lines and collection of conditioned media. Additional concentration and purification of the mAb to be done by investigator. Mycoplasma testing is recommended for cell lines not made by the facility. |
| Freezing Cells | Cells from culture expansion associated with mAb production can be frozen down for storage in Liq N2. The freezing media is 90% FBS:10% DMSO and the cells are at a concentration of 2-4 x 106 cells/ml. |
| Integra Culture System for production of mAb from cell lines | This system is intended for production of 30-60mg of mAb per month in the smaller system and 100-200mg of mAb in the larger system. Ave. concentration is 1.5mg/ml. The production schedule ave. is 8 weeks. |
| Polyclonal Antibody Production | This service will be offered on a limited basis depending on available housing. One rabbit per antigen. Includes animal purchase and board, 6 injections, 1 test bleed, 3 production collections, final bleed and labor for 120 days. Time course can be extended for additional fee based on animal board and labor charges. The goal is to provide a total of 100mls of serum, but this is not guaranteed. Allow 1-2 weeks for animals to arrive. |
Antigen Conjugation |
Peptide conjugation to KLH by a glutaraldehyde protocol. |
| Liquid N2 storage | Storage for cloned cell lines. The stored cell lines must be mycoplasma free. |





Lerner Research Institute
Cleveland Clinic, Mail Code NB21
9500 Euclid Avenue
Cleveland, Ohio 44195