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Influenza A virus interaction with murine lymphocytes

Identifieur interne : 002757 ( Main/Exploration ); précédent : 002756; suivant : 002758

Influenza A virus interaction with murine lymphocytes

Auteurs : Jack F. Woodruff [États-Unis] ; Judith J. Woodruff [États-Unis]

Source :

RBID : ISTEX:C3CAD63FFF7B960DE7EA54B6EE169A93B898A586

English descriptors

Abstract

Abstract: The presence of receptors for influenza A viruses on rat lymphocytes was determined by autoradiography using radioiodinated Cam (H1N1) and Japan 305 (H2N2) strains. With Cam influenza only 20 to 30% of TDL from normal donors bound the virus, whereas nearly all the cells had binding sites for Japan influenza. However 125I-Cam readily attached to B-TDL (cells obtained from adult thymectomized, lethally irradiated, and bone-marrow-reconstituted rats) and under optimal conditions 75 to 90% of these lymphocytes became labeled. The incidence of labeled B-TDL was reduced 90% by pretreatment of 125I-Cam with fetuin or pretreatment of cells with unlabeled Cam virus. Fractionation of TDL from normal rats via the nylon wool column technique revealed that the incidence of Cam binding lymphocytes increased from 12% in the nonadherent population (7% Ig+) to 72% in the adherent fraction (86% Ig+). Thus among recirculating lymphocytes B cells, but not the vast majority of T cells, had receptors for this agent. It was also found that Cam influenza attached to approximately 70% of spleen and bone marrow mononuclear cells, 39–47% thymocytes and 14–21% lymph node lymphocytes. The results demonstrate the existence of heterogeneity among lymphocytes with respect to their capacity to interact with influenza A subtypes and indicate that subpopulations of lymphocytes can be differentiated on the basis of receptors for Cam influenza virus.

Url:
DOI: 10.1016/0008-8749(81)90106-4


Affiliations:


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<div type="abstract" xml:lang="en">Abstract: The presence of receptors for influenza A viruses on rat lymphocytes was determined by autoradiography using radioiodinated Cam (H1N1) and Japan 305 (H2N2) strains. With Cam influenza only 20 to 30% of TDL from normal donors bound the virus, whereas nearly all the cells had binding sites for Japan influenza. However 125I-Cam readily attached to B-TDL (cells obtained from adult thymectomized, lethally irradiated, and bone-marrow-reconstituted rats) and under optimal conditions 75 to 90% of these lymphocytes became labeled. The incidence of labeled B-TDL was reduced 90% by pretreatment of 125I-Cam with fetuin or pretreatment of cells with unlabeled Cam virus. Fractionation of TDL from normal rats via the nylon wool column technique revealed that the incidence of Cam binding lymphocytes increased from 12% in the nonadherent population (7% Ig+) to 72% in the adherent fraction (86% Ig+). Thus among recirculating lymphocytes B cells, but not the vast majority of T cells, had receptors for this agent. It was also found that Cam influenza attached to approximately 70% of spleen and bone marrow mononuclear cells, 39–47% thymocytes and 14–21% lymph node lymphocytes. The results demonstrate the existence of heterogeneity among lymphocytes with respect to their capacity to interact with influenza A subtypes and indicate that subpopulations of lymphocytes can be differentiated on the basis of receptors for Cam influenza virus.</div>
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