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Molecular cloning and expression analysis of pig CD7
Ju Yeon Lee1, Joonbeom Bae, Inho Choi
1Division of Biotechnology, School of Life Sciences and Biotechnology, Korea University, Seoul, 136-701, Republic of Korea.
Veterinary Research Communications
|May 6, 2014
Summary
Researchers identified pig CD7, a protein crucial for T cell and NK cell regulation. They found pig CD7 binds to galectin-3 in pig macrophages and intestinal cells, suggesting conserved signaling pathways across mammals.
Area of Science:
- Immunology
- Molecular Biology
- Veterinary Science
Background:
- CD7 is a key membrane protein regulating T cell and NK cell functions.
- Previous studies on CD7 were limited to human and mouse species.
Purpose of the Study:
- To clone and sequence pig CD7 cDNA.
- To investigate the function and ligand binding of pig CD7.
Main Methods:
- Cloning of pig CD7 cDNA and sequence determination.
- RT-PCR to detect pig CD7 mRNA expression in tissues.
- Generation of soluble pig CD7 fusion protein (pig CD7Ig).
- Flow cytometry and immunohistochemistry to analyze pig CD7Ig binding to galectin-3.
Main Results:
- Complete cDNA sequence of pig CD7 was determined, encoding 208 amino acids with conserved signaling motifs.
- Pig CD7 mRNA was predominantly found in lymphoid tissues.
- Soluble pig CD7Ig demonstrated binding to galectin-3 in pig macrophages and small intestine epithelial cells.
Conclusions:
- Pig CD7 shares conserved structural and functional characteristics with mammalian CD7.
- Pig CD7 interacts with galectin-3, indicating a conserved ligand-binding mechanism.
- This study provides insights into the structural relationships and signal transduction pathways involving CD7 and its ligands in mammals.
