IL-2 derivative polypeptides

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United States of America Patent

PATENT NO 9206243
APP PUB NO 20140314709A1
SERIAL NO

13885021

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Abstract

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The present invention relates to polypeptides which share primary sequence with human IL-2, except for several amino acids that have been mutated. The mutations introduced substantially reduce the ability of these polypeptides to stimulate in vitro and in vivo regulatory T cells (T CD4+CD25+FoxP3+) and make them more effective in the therapy of murine transplantable tumors. Also includes therapeutic uses of these mutated variants, used alone or in combination with vaccines for the therapy of diseases such as cancer or infections where the activity of regulatory T cells (Tregs) is relevant. In another aspect the present invention relates to pharmaceutical compositions comprising as active principle the polypeptides disclosed. Finally, the present invention relates to the therapeutic use of the polypeptides and pharmaceutical compositions disclosed due to their modulating effect of the immune system on diseases like cancer and chronic infectious diseases.

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Patent OwnerAddress
CENTRO DE INMUNOLOGIA MOLECULARCALLE 216 ESQ A 15 ATABEY LA HABANA 11300

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Carmenate, Portilla Tania Havana, CU 4 77
Enamorado, Escalona Neris Michel Havana, CU 1 49
Lage, Dávila Agustin Bienvenido Havana, CU 2 47
León, Monzón Kalet Havana, CU 14 81
Pérez, Rodriguez Saumel Artemisa, CU 1 47

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