Animal-free primary antibodies are immunoglobulins that are both discovered and produced without the use of animal immunization at any stage of the process. The traditional production of antibodies has relied on the immunization of host animals—including rabbits, mice, rats, goats, sheep, horses, and chickens—followed by serum harvesting for polyclonal antibodies or splenic B-lymphocyte fusion for monoclonal antibody hybridomas. Over one million animals are used annually in Europe alone for antibody production, and the global figure is substantially higher. Animal-free antibodies have emerged as a scientifically validated alternative that addresses both ethical concerns and long-standing issues of reagent quality and reproducibility.
Applications
Non-animal-derived antibodies can be used in all traditional antibody applications, including basic research, regulatory testing, and clinical applications. They are validated for ELISA (sandwich, competition, direct, and indirect formats), Western blotting, immunohistochemistry, flow cytometry, immunoprecipitation and pull-down assays, multiplexed assays and arrays, and microfluidic assays. In vitro diagnostics applications include calibrators and controls, lateral flow assays, immunohematology (such as blood typing), and biopharmaceutical analysis including pharmacokinetic and immunogenicity testing. Non-animal-derived antibodies are also used in environmental monitoring, security, and food testing. Non-animal-derived antibodies in clinical use include 20 of 125 human or humanized antibodies in Phase II, III, or approved stages.
