The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2025
Filed:
Nov. 10, 2017
Centro DE Inmunologia Molecular, Havana, CU;
Gertrudis Rojas Dorantes, Havana, CU;
Kalet León Monzón, Havana, CU;
Tania Carmenate Portilla, Havana, CU;
Centro de Inmunología Molecular, Havana, CU;
Abstract
The present invention relates to the field of Biotechnology, particularly to a method based on the introduction of a single mutation in the genes encoding the human IL-2 and the muteins derived thereof that results in increased secretion levels in different hosts without affecting their biological functions. In particular, these mutations are based on a non-conservative change in the amino acid located in position 35 in the primary sequence of human IL-2, preferably the substitutions are K35E, K35D and K35Q. Another object of the present invention are the expression systems used to obtain both the recombinant human IL-2 and the muteins derived thereof using the method described in this invention. The above-mentioned method is useful to improve the production efficiency of the recombinant human IL-2 and the muteins derived thereof both at laboratory and industrial scales. The proteins obtained using this method can be used for therapeutic purposes as well as in the in vitro expansion of T cells for adoptive transfer therapies.