Molecular cloning of rat monocyte chemoattractant protein-1 (MCP-1) and its expression in rat spleen cells and tumor cell lines. |
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Authors: | T Yoshimura M Takeya K Takahashi |
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Affiliation: | Immunopathology Section, National Cancer Institute-Frederick Cancer Research and Development Center, MD 21702. |
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Abstract: | Rat monocyte chemoattractant protein-1 (MCP-1) cDNA was cloned. A cDNA library was constructed from mRNA extracted from Con A-stimulated rat spleen cells. After 2 rounds of screening with a radiolabeled oligonucleotide probe and DNA sequencing from plasmid DNAs, one clone which encoded for MCP-1 was obtained. The cDNA clone comprises 665 base pairs with an open reading frame which encodes for 148 amino acid protein. Spleen cells expressed a significant amount of MCP-1 mRNA without stimulus. But higher expression was observed when cells were stimulated with Con A. MCP-1 mRNA was also expressed in tumor cell lines, although the amount of expressed MCP-1 mRNA was different among cell lines. |
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