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Differential expression of CD45 isoforms in canine leukocytes
Yuko Goto-Koshino1, Hirotaka Tomiyasu1, Hiyoshi Suzuki1
1Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
This study characterizes canine CD45 isoforms (CD45RA and CD45RO) in white blood cells. Differential expression patterns were observed across various canine immune cells, influenced by cell type and activation status.
Area of Science:
- Immunology
- Cell Biology
Background:
- CD45 is a key surface protein on mammalian white blood cells.
- Understanding CD45 isoform expression is crucial for immune cell characterization.
Purpose of the Study:
- To investigate the differential expression of CD45 isoforms in normal canine white blood cells.
- To characterize the CD45RA and CD45RO isoforms in canines.
Main Methods:
- Flow cytometry was used to analyze CD45 isoform expression.
- An antibody specific for CD45RA was employed.
- Lymphocyte stimulation with Con A was performed.
Main Results:
- All canine nucleated blood cells express CD45.
- Granulocytes and monocytes show distinct CD45RA expression levels.
- B cells uniformly express CD45RA, while T cells show variable expression.
- Lymphocyte activation with Con A altered CD45RA expression.
Conclusions:
- Two major canine CD45 isoforms, CD45RA and CD45RO, were identified.
- Canine CD45 isoform expression varies by cell type and activation state.
- This provides foundational knowledge for studying canine immune cells.
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