ONCOSTATIN-M IS A MEMBER OF A CYTOKINE FAMILY THAT INCLUDES LEUKEMIA-INHIBITORY FACTOR, GRANULOCYTE COLONY-STIMULATING FACTOR, AND INTERLEUKIN-6

被引:372
作者
ROSE, TM [1 ]
BRUCE, AG [1 ]
机构
[1] BRISTOL MYERS SQUIBB, PHARMACEUT RES INST, SEATTLE, WA 98121 USA
关键词
D O I
10.1073/pnas.88.19.8641
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Oncostatin M (OSM), a glycoprotein of M(r) almost-equal-to 28,000 produced by activated monocyte and T-lymphocyte cell lines, was previously identified by its ability to inhibit the growth of cells from melanoma and other solid tumors. We have detected significant similarities in the primary amino acid sequences and predicted secondary structures of OSM, leukemia-inhibitory factor (LIF), granulocyte colony-stimulating factor (G-CSF), and interleukin 6 (IL-6). Analysis of the genes encoding these proteins revealed a shared exon organization, suggesting evolutionary descent from a common ancestral gene. Using a panel of DNAs from somatic cell hybrids, we have shown that OSM, like LIF, is located on human chromosome 22. We have also demonstrated that OSM has the ability to inhibit the proliferation of murine M1 myeloid leukemic cells and can induce their differentiation into macrophage-like cells, a function shared by LIF, G-CSF, and IL-6. We propose that OSM, LIF, G-CSF, and IL-6 are structurally related members of a cytokine family that have in common the ability to modulate differentiation of a variety of cell types.
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页码:8641 / 8645
页数:5
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