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The isolation and sequence of canine interleukin-2

S P Dunham1, D J Argyle, D E Onions

  • 1Department of Veterinary Pathology, University of Glasgow Veterinary School, UK.

DNA Sequence : the Journal of DNA Sequencing and Mapping
|January 1, 1995
PubMed

Insights

Researchers isolated and sequenced canine Interleukin-2 (IL-2) cDNA, revealing high genetic similarity to other species. This canine IL-2 sequence provides a foundation for comparative immunology and veterinary research.

Area of Science:

  • Immunology
  • Molecular Biology
  • Comparative Genomics

Background:

  • Interleukin-2 (IL-2) is a critical cytokine for immune responses.
  • Understanding canine IL-2 is important for comparative immunology and veterinary medicine.

Purpose of the Study:

  • To isolate and sequence the complementary DNA (cDNA) encoding canine Interleukin-2 (IL-2).
  • To analyze the genetic homology of canine IL-2 with other species.

Main Methods:

  • Complementary DNA (cDNA) synthesis using reverse transcription polymerase chain reaction (RT-PCR).
  • Oligonucleotide primers designed from conserved regions of known IL-2 sequences.
  • Nucleic acid sequencing and protein homology analysis.

Main Results:

  • Successfully isolated and sequenced a cDNA corresponding to canine IL-2.
  • The canine IL-2 cDNA encodes a predicted protein of 155 amino acids.
  • Canine IL-2 cDNA exhibits high nucleic acid homology (up to 92%) with feline IL-2 and significant homology with human, equine, bovine, and murine IL-2.
  • The derived canine IL-2 protein shows high similarity (up to 90%) to its feline counterpart and considerable similarity to homologs in other species.

Conclusions:

  • The study provides the first nucleic acid sequence for canine IL-2.
  • High sequence homology suggests conserved function across species.
  • This resource facilitates further research into canine immune function and comparative IL-2 studies.

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