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Recombinant proteins, which are produced using recombinant DNA technology, have transformed the domains of biotechnology and biomedicine by allowing the production of proteins that are often expensive or difficult to obtain from natural sources. More than 130 recombinant proteins are currently in clinical use by the US FDA, demonstrating the importance of these proteins in both research and therapeutic applications. Bacterial, yeast, mammalian cell cultures, and hybridoma technology are examples of recombinant protein production systems that have enabled the large-scale production of therapeutic proteins, including monoclonal antibodies, which are now essential tools in disease treatment. From their origins with human insulin in the 1980s to the most recent developments in third-generation proteins, this brief review examines the development of recombinant protein therapies. The first generation concentrated on natural structures; the second generation focused on enhancing safety, pharmacokinetics, and specificity; and the third generation is ready to present innovative formulations and delivery systems. This review also covers the use of recombinant proteins in cancer treatment, different protein production systems, and design techniques that keep improving the safety and effectiveness profiles of protein therapies.
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