Journal of Heredity Advance Access first published online on June 15, 2007
This version published online on June 27, 2007
Journal of Heredity, doi:10.1093/jhered/esm025
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Comparison of the Human and Canine Cytokines IL-1(
/ß) and TNF-
to Orthologous Other Mammalians
From the Small Animal Clinic, University of Veterinary Medicine, Bischofsholer Damm 15, 30137 Hanover, Germany (Soller, Escobar, Willenbrock, Eberle, and Nolte); and the Centre for Human Genetics, University of Bremen, Leobener Strasse ZHG, 28359 Bremen, Germany (Soller, Escobar, Willenbrock, Janssen, and Bullerdiek)
Address correspondence to Dr. I. Nolte at the address above, or e-mail: inolte{at}klt.tiho-hannover.de.
The cytokines interleukin-1 (IL-1
and IL-1ß) and the tumor necrosis factor-
(TNF-
) both play a major role in the initiation and regulation of inflammation and immunity responses. Polymorphisms within the gene sequences of these cytokines IL-1 and TNF-
have been proposed to play an important role in the pathogenesis of certain diseases. Affecting nearly every organ, various diseases, including some cancers, are described to be associated with an increased level of IL-1 and TNF-
proteins, for example, solid tumors, hematologic malignancies, malignant histiocytosis, autoimmune disorders, Alzheimer's disease, Parkinson's disease, sepsis, and rheumatoid arthritis. Regarding genetic backgrounds and pathways, numerous canine diseases show close similarities to their human counterparts. As a genetic model, the dog could be used to unravel the genetic mechanisms, for example, in particular the predispositions, the development, and progression of cancer and metabolic diseases. The identity comparison of gene and protein sequences of different species could be used to elucidate the structure and function of the genes and proteins by identifying the evolutionary conserved regions and domains. Herein we analyzed in detail the mRNA and protein structures and identities of the present known mammalian (human, canine, murine, rat, ovine, equine, feline, porcine, and bovine) TNF-
, IL-1
, and IL-1ß mRNAs and proteins. Additionally, based on the canine genome sequence, we derived in silico the complete mRNA structures of the IL-1
and IL-1ß mRNAs.
Corresponding Editor: Steven Hannah