Characterization of the in vitro interaction of PNAhi lymphocytes with the bone marrow and hepatic asialoglycoprotein receptors.
We have previously identified an in vivo interaction between circulating PNAhi lymphoid cells and the hepatic asialoglycoprotein receptor, which results in a protracted liver sequestration of these cells. An in vitro frozen section binding assay was developed to study the interaction of PNAhi cells with the receptor in more detail. This assay confirmed that the sequestration of PNAhi lymphoid cells by the liver was mediated by the asialoglycoprotein receptor, as binding was inhibitable by coincubation with galactose, asialoglycoproteins, chelation of divalent cations, or a specific anti-asialoglycoprotein receptor antiserum. This frozen section binding assay was utilized to demonstrate the existence of a bone marrow asialoglycoprotein receptor which was found to be capable of binding to PNAhi lymphocytes or asialoglycoproteins bound to synthetic substrates. We further established that the bone marrow receptor differed both functionally and antigenically from its hepatic analogue.[1]References
- Characterization of the in vitro interaction of PNAhi lymphocytes with the bone marrow and hepatic asialoglycoprotein receptors. Samlowski, W.E., Braaten, B.A., Daynes, R.A. Cell. Immunol. (1985) [Pubmed]
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