Cloning, sequencing and expression of the ovine interleukin 6 gene.
Gene amplification by reverse transcriptase PCR with heterologous primers has been used to obtain a cDNA clone encoding the structural sequences of ovine interleukin 6 from alveolar macrophages. This cDNA encodes a protein of M(r) = 23,429, which is 53% homologous in amino acid sequence to human IL = 6. The clone hybridizes to an RNA of size 1260 nt in alveolar macrophages, expression of which is potentiated by LPS. The ovine IL-6 structural gene has been cloned into the yeast expression vector pOGS40, and used to produce a recombinant protein. This protein is capable of causing increased immunoglobulin production in pokeweed mitogen stimulated ovine peripheral blood mononuclear cells at concentrations of 10-100 ng/ml, but it only causes very limited replication of B9 cells, a murine IL-6 dependent cell line. This is in contrast to recombinant human IL-6, which is capable of stimulating B9 cell proliferation, but not immunoglobulin production by ovine PBMC.
Ebrahimi
B
B
Department of Veterinary Pathology, University of Edinburgh, UK.
Roy
D J
DJ
Bird
P
P
Sargan
D R
DR
D000818:Animals; D001483:Base Sequence; D001681:Biological Assay; D003001:Cloning, Molecular; D015870:Gene Expression; D006801:Humans; D015850:Interleukin-6 / Q000235:genetics*; D016180:Lentivirus Infections / Q000209:etiology / Q000503:physiopathology*; D017960:Lentiviruses, Bovine; D051379:Mice; D008969:Molecular Sequence Data; D012756:Sheep; D013045:Species Specificity
D015850:Interleukin-6