Membrane events leading to interferon-γ induction by antigens (41995)

F. Dianzani, M. Santiano, U. Ramenghi, M. R. Capobianchi, G. Antonelli

Research output: Contribution to journalArticlepeer-review


Mitogenic induction of interferon-γ in human peripheral blood mononuclear cells (PBMC) is prevented by enzymatic cleavage of galactose residues on the cell membrane, and by calcium depletion, suggesting that oxidation of galactose on the membrane glycoproteins and activation of a calcium flux across the membrane are critical events for interferon-γ induction in nonspecifically stimulated human PBMC. The same experimental design has been applied to human PBMC cultures enriched of specifically sensitized lymphocytes and stimulated with the respective antigens. The results of these experiments show that also antigenic induction of interferon-γ by purified protein derivative, tetanus toxoid, and MLR requires integrity of galactose residues and calcium intake suggesting that alteration of membrane-bound galactose and activation of a calcium flow are critical triggering events for both specific and nonspecific lymphocyte activation.

Original languageEnglish
Pages (from-to)139-142
Number of pages4
JournalProceedings of the Society for Experimental Biology and Medicine
Issue number1
Publication statusPublished - 1985

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)


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