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Identification, cloning, and characterization of an immune activation gene.


ABSTRACT: We have identified an immune activation gene, denoted Act-2, by differential hybridization screening of an activated T-cell library. The gene is induced rapidly after T-cell activation with phytohemagglutinin, B-cell activation with Staphylococcus aureus Cowan I, and monocyte activation with lipopolysaccharide. We have isolated a cDNA containing the full-length coding region. The deduced amino acid sequence predicts an open reading frame of 92 amino acids, including a very hydrophobic N terminus, which by weight matrix score is predicted to be a signal peptide. Using a baculovirus expression system, we have shown that this gene encodes a secreted product. It is therefore possible that Act-2 represents a newly discovered cytokine.

SUBMITTER: Lipes MA 

PROVIDER: S-EPMC282843 | biostudies-other | 1988 Dec

REPOSITORIES: biostudies-other

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Identification, cloning, and characterization of an immune activation gene.

Lipes M A MA   Napolitano M M   Jeang K T KT   Chang N T NT   Leonard W J WJ  

Proceedings of the National Academy of Sciences of the United States of America 19881201 24


We have identified an immune activation gene, denoted Act-2, by differential hybridization screening of an activated T-cell library. The gene is induced rapidly after T-cell activation with phytohemagglutinin, B-cell activation with Staphylococcus aureus Cowan I, and monocyte activation with lipopolysaccharide. We have isolated a cDNA containing the full-length coding region. The deduced amino acid sequence predicts an open reading frame of 92 amino acids, including a very hydrophobic N terminus  ...[more]

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