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The rabbit formed a myeloma-like tumor, allowing the isolation of a plasmacytoma cell line, named 240E-1. Fusion of 240E-1 cells with rabbit lymphocytes produced hybridomas that secreted rabbit monoclonal antibodies in a consistent manner. [4] However, like the early mouse myeloma lines developed in the 1970s, stability was a concern.
One study has reported the isolation of a hybridoma cell line (clone 1E10), which produces a monoclonal antibody (IgM, k isotype). This monoclonal antibody shows specific immuno-cytochemical staining of nucleoli. [12] Tissues and tumours can be classified based on their expression of certain markers, with the help of monoclonal antibodies.
On 19 April 2012, Abcam completed the purchase of Epitomics. Epitomics was a privately held biotech company in Burlingame, California (US) and Hangzhou (China) that focused on the development, production, and distribution of rabbit monoclonal antibodies for biomedical research and diagnostic applications. [13]
He is a true translational investigator, since he used these monoclonal antibodies to classify human B-cell leukemia and lymphomas as well as to create therapeutic agents for patients. . . More importantly, he was the first in the world to administer a monoclonal antibody to a human (a patient with B-cell lymphoma)." [11]
The antibodies can be isolated from the animal's whole serum. Polyclonal antibody production will result in a mixture of different antibodies and will recognize multiple epitopes. Monoclonal antibodies are made by injecting the animal with the antigen of interest and then isolating an antibody-producing B cell, typically from the spleen.
Anti-thymocyte globulin (ATG) is an infusion of horse or rabbit-derived antibodies against human T cells and their precursors , which is used in the prevention and treatment of acute rejection in organ transplantation and therapy of aplastic anemia due to bone marrow insufficiency.
Polyclonal antibodies (pAbs) are antibodies that are secreted by different B cell lineages within the body (whereas monoclonal antibodies come from a single cell lineage). They are a collection of immunoglobulin molecules that react against a specific antigen , each identifying a different epitope .
A study published in September 2012 found that rhesus macaques infected with Ebola virus (EBOV) survived when receiving MB-003 (mixture of 3 chimeric monoclonal antibodies) one hour after infection. When treated 24 or 48 hours after infection, four of six animals survived and had little to no viremia and few, if any, clinical symptoms.