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Polypeptides derived from IL-2 having agonist activity, for the therapy of cancer and chronic infections
专利权人:
Centro de Inmunologia Molecular
发明人:
Leon Monzon, Kalet,Carmenate Portilla, Tania,Perez Rodriguez, Saumel,Enamorado Escalona, Neris Michel,Lage Davila, Agustin Bienvenido
申请号:
AU2011328688
公开号:
AU2011328688B2
申请日:
2011.11.10
申请国别(地区):
AU
年份:
2015
代理人:
摘要:
The invention relates to polypeptides that have the same primary sequence as human IL-2, except that some amino acids have been mutated. The mutations introduced substantially reduce the capacity of these polypeptides for the in vitro and in vivo stimulation of regulatory T cells (T CD4+CD25+FoxP3+) and increase the efficacy of said polypeptides in the therapy of murine transplantable tumours. The invention also relates to the therapeutic uses of these variants, either alone or combined with vaccines, for the therapy of diseases, such as cancer or infections in which the activity of the regulatory T cells (Tregs) is relevant. The invention further relates to pharmaceutical compositions comprising the aforementioned polypeptides as an active principle. In addition, the invention relates to the therapeutic use of said polypeptides and pharmaceutical compositions, making use of their ability to modulate the immune system in relation to pathologies such as cancer and chronic infectious diseases.
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