Biosynthesis and secretion of beta-thromboglobulin by a human megakaryoblastic cell line (MEG-01).

Abstract:

:The de-novo synthesis and secretion of beta-thromboglobulin (BTG) by a human megakaryoblastic cell line (MEG-01) were studied by measuring and immunoblotting of BTG in culture supernatant and immunoprecipitation of radiolabeled BTG synthesized after incubation with [35S]methionine. It was demonstrated that BTG synthesized by MEG-01 was secreted into culture media in a monomer form having a molecular weight of 8,800. Furthermore, we purified BTG from culture medium of MEG-01 with a heparin affinity column and compared BTG from MEG-01 with that from normal platelets. The molecular weights of BTG purified from both sources were 8,800 using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). These results provide direct evidence for the synthesis and secretion of BTG by megakaryocytes.

journal_name

Int J Hematol

authors

Tanabe N,Ogura M,Hotta T,Takamatsu J,Tanaka M,Saito H

subject

Has Abstract

pub_date

1991-04-01 00:00:00

pages

165-70

issue

2

eissn

0925-5710

issn

1865-3774

journal_volume

54

pub_type

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