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Expression of granulocyte colony-stimulating factor by human cell lines.

Devlin J.J., Devlin P.E., Myambo K., Lilly M.B., Rado T.A., Warren M.K.

We have isolated and expressed a cDNA clone that encodes a human granulocyte colony-stimulating factor from the MIA PaCa-2 cell line. A genomic clone of this factor has been isolated from the CHU-2 cell line and is reported to encode two alternative transcripts [The EMBO J. 5,575, 1986]; one transcript predicts an amino acid sequence identical to that predicted by our MIA PaCa-2 cDNA clone; the other transcript predicts a similar protein containing a three amino acid residue insertion. To investigate which types of this colony-stimulating factor are produced by other cell lines, we used specific oligonucleotides to determine which types of transcripts were present in MIA PaCa-2, 5637, and LD-1 cells, all of which have been reported to produce a factor that can stimulate the growth of predominantly granulocyte colonies in human bone marrow cell cultures. Northern analysis with these probes revealed MIA PaCa-2-like transcripts in all of these cell lines and failed to detect transcripts that would encode the colony-stimulating factor that contained the three-amino-acid-residue insertion.

J. Leukoc. Biol. 41:302-306(1987) [PubMed] [Europe PMC]

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