PMID: 6161170Jan 1, 1981Paper

Antigen-specific activity of murine leukocyte dialysates containing transfer factor on human leukocytes in the leukocyte migration inhibition (LMI) assay

The Journal of Immunology : Official Journal of the American Association of Immunologists
W BorkowskyH S Lawrence

Abstract

We report on the extension of the direct leukocyte migration inhibition (LMI) test as an assay for antigen-specific activity in human leukocyte dialysates (DLE) containing transfer factor to an evaluation of antigen-specific activity in DLE prepared from inbred mice. Murine DLE was observed to cause antigen-dependent and antigen-specific effects on the inhibition of migration of nonimmune human leukocyte populations. Pulsing of nonimmune human leukocyte with DLE preparations from BALB/c and SJL mice immunized with Candida, diphtheria toxoid, and SK-SD resulted in their inhibition of migration in the presence of the respective antigens. The antigen-specific activity in murine DLE was found to be present in lymph node cell preparations and to be absent from spleen cell preparations of the same donors. The activity of DLE in lymph node cells was found to be present in the theta-cell enriched subpopulation of nonadherent lymphocytes after passage through nylon wool columns. The antigen-specific activity of murine DLE, as we have reported for human DLE, was found to reside in the < 3500 dalton dialysis fraction and not in the < 3500 dalton fraction. We conclude that nonimmune human leukocytes in the LMI test provide a suitable assay...Continue Reading

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