Characterization of a multimeric polypeptide complex on the surface of thymus-derived cells in the Mexican axolotl.

Abstract:

:We previously raised a rabbit antiserum (L12) against a 38 kD polypeptide which is expressed on the surface of thymocytes and peripheral T cells of an Urodele Amphibian, the Mexican axolotl (Ambystoma mexicanum). Here we show that L12 antibodies immunoprecipitate several labelled molecules from surface iodinated axolotl spleen cells, including the 38 kD molecule, but also two polypeptides of 43 and 22 kD which are covalently linked to other elements. Another rabbit antiserum (L10) was raised against detergent-solubilized axolotl thymocyte membranes and shown to recognize the majority of thymocytes and about half of the splenocytes in immunofluorescence. In Western blotting, L10 antibodies recognized a limited number of surface polypeptides in thymocyte and splenocyte lysates, including 43, 38, and 22 kD elements. Immune complexes formed between L10 antibodies and solubilized splenocyte membranes were used to immunize BALB/c mice intrasplenically in the aim of raising MoAbs specific for axolotl T cells. Monoclonal antibody 87.16 was shown to stain in immunofluorescence 26.7% of thymocytes and 26.8% of spleen cells. This MoAb recognized a 43 kD polypeptide that can covalently associate on the T-cell surface with several other molecules to form a multimeric complex.

journal_name

Scand J Immunol

authors

Kerfourn F,Guillet F,Charlemagne J,Tournefier A

doi

10.1111/j.1365-3083.1993.tb01741.x

subject

Has Abstract

pub_date

1993-10-01 00:00:00

pages

381-7

issue

4

eissn

0300-9475

issn

1365-3083

journal_volume

38

pub_type

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