Inventors:
George J. Todaro - Seattle WA
David W. Leung - Mercer Island WA
Timothy M. Rose - Seattle WA
Assignee:
Fred Hutchinson Cancer Research Center - Seattle WA
International Classification:
C12P 2106
C07H 1700
C07K 1400
Abstract:
Therapeutic hybrid cytokines, having a size ranging from about 10 to about 30 kDa, comprise portions of cytokines: leukemia inhibitory factor (LIF), granulocyte-colony stimulating factor (G-CSF), interleukin-6 (IL-6), interleukin-11 (IL-11), oncostatin-M (OSM), and ciliaryneurotrophic factor (CNTF). Hybrid cytokines comprise three or four. alpha. -helical sequences selected from. alpha. -helical sequences of IL-6, G-CSF, LIF, IL-11, CNTF and OSM and linking sequences of 5-40 amino acids in length, selected from the linking sequences of IL-6, G-CSF, LIF, IL-11, CNTF and OSM or other, desirable linking sequences. In the hybrid cytokines, at least one. alpha. -helical sequence is derived from a different cytokine than at least one other. alpha. -helical sequence; or, at least one linking sequence of a cytokine differentiates the hybrid cytokine from a corresponding cytokine. In hybrid cytokines having three. alpha.