A disulfide conjugate between anti-tetanus antibodies and HIV (37-72)Tat neutralizes tetanus toxin inside chromaffin cells

Sylvia Stein, Aryeh Weiss, Knut Adermann, Philip Lazarovici, Jacob Hochman, Hans Wellhöner

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Conjugates between anti-tetanus F(ab')2 fragments and the (37-72) fragment of the HIV Tat protein were taken up by chromaffin cells, NG108-15 neurohybridoma cells and Rev-2-T-6 lymphoma cells. The uptake could not be inhibited by competition with (37-72)Tat, but was reduced in the presence of metabolic inhibitors or at low temperature. The disulfide as well as the thioether conjugate were translocated to the cytoplasmic space, but only the disulfide conjugate moderately restored the stimulated transmitter release inhibited by tetanus toxin. Therefore, disulfide conjugates are more promising than thioethers for the neutralization of intracellular antigens. These conjugates provide new tools to study neuroprotection against bacterial neurotoxins. Copyright (C) 1999 Federation of European Biochemical Societies.

Original languageEnglish
Pages (from-to)383-386
Number of pages4
JournalFEBS Letters
Volume458
Issue number3
DOIs
StatePublished - 24 Sep 1999
Externally publishedYes

Bibliographical note

Funding Information:
We would like to thank Mrs. Carola Kassebaum for valuable technical assistance. This work was supported in part by a grant from the Lower Saxony-Israel Research Fund to J.H., P.L., and H.W. Dr. Philip Lazarovici is affiliated with the David R. Bloom Center at the Hebrew University.

Funding

We would like to thank Mrs. Carola Kassebaum for valuable technical assistance. This work was supported in part by a grant from the Lower Saxony-Israel Research Fund to J.H., P.L., and H.W. Dr. Philip Lazarovici is affiliated with the David R. Bloom Center at the Hebrew University.

FundersFunder number
Lower Saxony-Israel Research Fund
Hebrew University of Jerusalem

    Keywords

    • Disulfide conjugate
    • HIV-Tat
    • Tetanus toxin
    • Thioether conjugate

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