Interferon tau mutants and methods for making them

   
   

The present invention is directed to the field of animal and human health, and more particularly to pharmacological uses of analogs or mutants of interferon-tau (IFN-.tau.) that differ from native IFN-.tau. because of substitutions of amino acids near the amino terminus of the IFN-.tau. molecule that impart improved biological activity. The IFN-.tau. mutants described in this disclosure have low toxicity, retain the same or slightly reduced antiviral activity compared with highly effective IFN-alpha, and have enhanced antiproliferative activity compared to native IFN-tau, making them useful in treating viral infections, cancer, and immune system diseases including autoimmune diseases. The present invention is also directed to a method for making novel recombinant proteins, especially interferons, interleukins, and cytokines, polypeptide hormones and other biopharmaceuticals that have improved biological activity over known proteins and/or lower toxicity and/or increased stability.

A invenção atual é dirigida ao campo da saúde animal e humana, e mais particularmente aos usos pharmacological dos analogs ou aos mutants do interferon-tau-tau (IFN-.tau.) isso difere de IFN-.tau. nativo por causa das substituições dos aminos-ácido perto do amino término do IFN-.tau. molécula que dá a atividade biológica melhorada. Os mutants de IFN-.tau. descritos nesta divulgação têm o toxicity baixo, retêm o mesmo ou a atividade antiviral ligeiramente reduzida comparado com o IFN-alfa altamente eficaz, e realçaram a atividade antiproliferativa comparada a IFN-tau nativo, fazendo os útil em infecções viral de tratamento, em cancer, e em doenças do sistema imune including doenças autoimmune. A invenção atual é dirigida também a um método para fazer a novela proteínas recombinant, especial interferons, interleukins, e cytokines, os hormones do polypeptide e os outros biopharmaceuticals que melhoraram proteínas sabidas da atividade excesso biológico e/ou um toxicity mais baixo e/ou estabilidade aumentada.

 
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