Anti-Thy-1-induced proliferation of immature thymocytes expressing the CD3-associated gamma/delta heterodimer.

Abstract:

:A series of rat monoclonal antibodies (mAb) directed against the Thy-1 molecule have been evaluated for their ability to stimulate immature (CD4-8-) murine thymocytes. CD4-8- thymocytes could be induced to proliferate by several anti-Thy-1 mAb provided that exogenous interleukin 1 or interleukin 2 was provided. Apparently non-stimulatory anti-Thy-1 mAb could be rendered stimulatory if cross-linked by a rabbit anti-rat immunoglobulin reagent. Anti-Thy-1-stimulated CD4-8- thymocytes were found to uniformly express CD3 but did not stain positively with F23.1, a mAb reactive with alpha/beta T cell receptors utilizing the V beta 8 gene family. Immunoprecipitation analysis of such stimulated CD4-8- thymocytes indicated that they expressed a CD3-associated heterodimer of 45 kDa/35 kDa most likely corresponding to the product of the gamma and (putative) delta T cell receptor genes. Taken together, these data demonstrate that anti-Thy-1 mAb selectively activate a subset of CD4-8- thymocytes committed to the gamma/delta T cell receptor lineage.

journal_name

Eur J Immunol

authors

MacDonald HR,Miescher GC,Howe RC

doi

10.1002/eji.1830171127

subject

Has Abstract

pub_date

1987-11-01 00:00:00

pages

1677-80

issue

11

eissn

0014-2980

issn

1521-4141

journal_volume

17

pub_type

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