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Biologics targeted at TNF: design, production and challenges Gatto BReumatismo 2006[Apr]; 58 (2): 94-103Several biotech-derived drugs aimed at Tumor Necrosis Factor (TNF) have been licensed in the last years, profoundly changing the therapy of several autoimmune diseases based on inflammation, affecting the life of patients and bringing to the market attention the growth potentials of biologics directed at cytokines. The proof of principles that led to the design of these compounds dates back from the nineties, when the involvement of TNF in rheumatoid arthritis was proved by the ability of specific anti-TNF proteins to modulate the inflammatory response in animal models. Monoclonal antibodies aimed at neutralizing the excess TNF were developed with therapeutic purposes, and a chimeric and a full human antibody are now approved for several clinical indications. The design of soluble receptors able to bind and neutralize human TNF paralleled the development of antibodies as therapeutics, and the clinical success of these drugs was achieved by the clever design of a novel recombinant dimeric protein, consisting of the extracellular portion of human TNF receptor linked to the constant portion of a human immunoglobulin. All approved biologics designed to bind and neutralize TNF were obtained through the power of biotechnological methods: the development of these important biopharmaceutical products, their means of production and the challenges they face will be analyzed here in details.|Adalimumab[MESH]|Antibodies, Monoclonal, Humanized[MESH]|Antibodies, Monoclonal/pharmacology[MESH]|Autoimmune Diseases/*drug therapy[MESH]|Biological Products/*chemical synthesis/*pharmacology[MESH]|Etanercept[MESH]|Humans[MESH]|Immunoglobulin G/pharmacology[MESH]|Infliximab[MESH]|Receptors, Tumor Necrosis Factor[MESH]|Tumor Necrosis Factor-alpha/*antagonists & inhibitors[MESH] |
